linux-cvs-patches
[Top] [All Lists]

CVS Update@linux-mips.org: linux

To: linux-cvs-patches@linux-mips.org
Subject: CVS Update@linux-mips.org: linux
From: ralf@linux-mips.org
Date: Wed, 10 Aug 2005 17:39:06 +0100
Reply-to: linux-mips@linux-mips.org
Sender: linux-cvs-patches-bounce@linux-mips.org
CVSROOT:        /home/cvs
Module name:    linux
Changes by:     ralf@ftp.linux-mips.org 05/08/10 17:39:00

Modified files:
        drivers/media/video: Makefile vino.c vino.h 
Added files:
        drivers/media/video: indycam.c indycam.h saa7191.c saa7191.h 

Log message:
        New Indycam & VINO drivers.

diff -urN linux/drivers/media/video/indycam.c 
linux/drivers/media/video/indycam.c
--- linux/drivers/media/video/indycam.c 2003/10/22 20:45:15     1.1
+++ linux/drivers/media/video/indycam.c 2005/08/10 16:38:59     1.2
@@ -0,0 +1,412 @@
+/*
+ *  indycam.c - Silicon Graphics IndyCam digital camera driver
+ *
+ *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
+ *  Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <linux/videodev.h>
+/* IndyCam decodes stream of photons into digital image representation ;-) */
+#include <linux/video_decoder.h>
+#include <linux/i2c.h>
+
+#include "indycam.h"
+
+//#define INDYCAM_DEBUG
+
+#define INDYCAM_MODULE_VERSION "0.0.3"
+
+MODULE_DESCRIPTION("SGI IndyCam driver");
+MODULE_VERSION(INDYCAM_MODULE_VERSION);
+MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
+MODULE_LICENSE("GPL");
+
+#ifdef INDYCAM_DEBUG
+#define dprintk(x...) printk("IndyCam: " x);
+#define indycam_regdump(client) indycam_regdump_debug(client)
+#else
+#define dprintk(x...)
+#define indycam_regdump(client)
+#endif
+
+#define VINO_ADAPTER   (I2C_ALGO_SGI | I2C_HW_SGI_VINO)
+
+struct indycam {
+       struct i2c_client *client;
+       int version;
+};
+
+static struct i2c_driver i2c_driver_indycam;
+
+static const unsigned char initseq[] = {
+       INDYCAM_CONTROL_AGCENA,         /* INDYCAM_CONTROL */
+       INDYCAM_SHUTTER_DEFAULT,        /* INDYCAM_SHUTTER */
+       INDYCAM_GAIN_DEFAULT,           /* INDYCAM_GAIN */
+       0x00,                           /* INDYCAM_BRIGHTNESS (read-only) */
+       INDYCAM_RED_BALANCE_DEFAULT,    /* INDYCAM_RED_BALANCE */
+       INDYCAM_BLUE_BALANCE_DEFAULT,   /* INDYCAM_BLUE_BALANCE */
+       INDYCAM_RED_SATURATION_DEFAULT, /* INDYCAM_RED_SATURATION */
+       INDYCAM_BLUE_SATURATION_DEFAULT,/* INDYCAM_BLUE_SATURATION */
+};
+
+/* IndyCam register handling */
+
+static int indycam_read_reg(struct i2c_client *client, unsigned char reg,
+                            unsigned char *value)
+{
+       int ret;
+
+       if (reg == INDYCAM_RESET) {
+               dprintk("indycam_read_reg(): "
+                       "skipping write-only register %d\n", reg);
+               *value = 0;
+               return 0;
+       }
+
+       ret = i2c_smbus_read_byte_data(client, reg);
+       if (ret < 0) {
+               printk(KERN_ERR "IndyCam: indycam_read_reg(): read failed, "
+                      "register = 0x%02x\n", reg);
+               return ret;
+       }
+
+       *value = (unsigned char)ret;
+
+       return 0;
+}
+
+static int indycam_write_reg(struct i2c_client *client, unsigned char reg,
+                            unsigned char value)
+{
+       int err;
+
+       if ((reg == INDYCAM_BRIGHTNESS)
+           || (reg == INDYCAM_VERSION)) {
+               dprintk("indycam_write_reg(): "
+                       "skipping read-only register %d\n", reg);
+               return 0;
+       }
+
+       dprintk("Writing Reg %d = 0x%02x\n", reg, value);
+       err = i2c_smbus_write_byte_data(client, reg, value);
+       if (err) {
+               printk(KERN_ERR "IndyCam: indycam_write_reg(): write failed, "
+                      "register = 0x%02x, value = 0x%02x\n", reg, value);
+       }
+       return err;
+}
+
+static int indycam_write_block(struct i2c_client *client, unsigned char reg,
+                               unsigned char length, unsigned char *data)
+{
+       unsigned char i;
+       int err;
+
+       for (i = reg; i < length; i++) {
+               err = indycam_write_reg(client, reg + i, data[i]);
+               if (err)
+                       return err;
+       }
+
+       return 0;
+}
+
+/* Helper functions */
+
+#ifdef INDYCAM_DEBUG
+static void indycam_regdump_debug(struct i2c_client *client)
+{
+       int i;
+       unsigned char val;
+
+       for (i = 0; i < 9; i++) {
+               indycam_read_reg(client, i, &val);
+               dprintk("Reg %d = 0x%02x\n", i, val);
+       }
+}
+#endif
+
+static int indycam_get_controls(struct i2c_client *client,
+                               struct indycam_control *ctrl)
+{
+       unsigned char ctrl_reg;
+
+       indycam_read_reg(client, INDYCAM_CONTROL, &ctrl_reg);
+       ctrl->agc = (ctrl_reg & INDYCAM_CONTROL_AGCENA)
+               ? INDYCAM_VALUE_ENABLED
+               : INDYCAM_VALUE_DISABLED;
+       ctrl->awb = (ctrl_reg & INDYCAM_CONTROL_AWBCTL)
+               ? INDYCAM_VALUE_ENABLED
+               : INDYCAM_VALUE_DISABLED;
+       indycam_read_reg(client, INDYCAM_SHUTTER,
+                        (unsigned char *)&ctrl->shutter);
+       indycam_read_reg(client, INDYCAM_GAIN,
+                        (unsigned char *)&ctrl->gain);
+       indycam_read_reg(client, INDYCAM_RED_BALANCE,
+                        (unsigned char *)&ctrl->red_balance);
+       indycam_read_reg(client, INDYCAM_BLUE_BALANCE,
+                        (unsigned char *)&ctrl->blue_balance);
+       indycam_read_reg(client, INDYCAM_RED_SATURATION,
+                        (unsigned char *)&ctrl->red_saturation);
+       indycam_read_reg(client, INDYCAM_BLUE_SATURATION,
+                        (unsigned char *)&ctrl->blue_saturation);
+       indycam_read_reg(client, INDYCAM_GAMMA,
+                        (unsigned char *)&ctrl->gamma);
+
+       return 0;
+}
+
+static int indycam_set_controls(struct i2c_client *client,
+                               struct indycam_control *ctrl)
+{
+       unsigned char ctrl_reg;
+
+       indycam_read_reg(client, INDYCAM_CONTROL, &ctrl_reg);
+       if (ctrl->agc != INDYCAM_VALUE_UNCHANGED) {
+               if (ctrl->agc)
+                       ctrl_reg |= INDYCAM_CONTROL_AGCENA;
+               else
+                       ctrl_reg &= ~INDYCAM_CONTROL_AGCENA;
+       }
+       if (ctrl->awb != INDYCAM_VALUE_UNCHANGED) {
+               if (ctrl->awb)
+                       ctrl_reg |= INDYCAM_CONTROL_AWBCTL;
+               else
+                       ctrl_reg &= ~INDYCAM_CONTROL_AWBCTL;
+       }
+       indycam_write_reg(client, INDYCAM_CONTROL, ctrl_reg);
+
+       if (ctrl->shutter >= 0)
+               indycam_write_reg(client, INDYCAM_SHUTTER, ctrl->shutter);
+       if (ctrl->gain >= 0)
+               indycam_write_reg(client, INDYCAM_GAIN, ctrl->gain);
+       if (ctrl->red_balance >= 0)
+               indycam_write_reg(client, INDYCAM_RED_BALANCE,
+                                 ctrl->red_balance);
+       if (ctrl->blue_balance >= 0)
+               indycam_write_reg(client, INDYCAM_BLUE_BALANCE,
+                                 ctrl->blue_balance);
+       if (ctrl->red_saturation >= 0)
+               indycam_write_reg(client, INDYCAM_RED_SATURATION,
+                                 ctrl->red_saturation);
+       if (ctrl->blue_saturation >= 0)
+               indycam_write_reg(client, INDYCAM_BLUE_SATURATION,
+                                 ctrl->blue_saturation);
+       if (ctrl->gamma >= 0)
+               indycam_write_reg(client, INDYCAM_GAMMA, ctrl->gamma);
+
+       return 0;
+}
+
+/* I2C-interface */
+
+static int indycam_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+       int err = 0;
+       struct indycam *camera;
+       struct i2c_client *client;
+
+       printk(KERN_INFO "SGI IndyCam driver version %s\n",
+              INDYCAM_MODULE_VERSION);
+
+       client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+       if (!client)
+               return -ENOMEM;
+       camera = kmalloc(sizeof(struct indycam), GFP_KERNEL);
+       if (!camera) {
+               err = -ENOMEM;
+               goto out_free_client;
+       }
+
+       memset(client, 0, sizeof(struct i2c_client));
+       memset(camera, 0, sizeof(struct indycam));
+
+       client->addr = addr;
+       client->adapter = adap;
+       client->driver = &i2c_driver_indycam;
+       client->flags = 0;
+       strcpy(client->name, "IndyCam client");
+       i2c_set_clientdata(client, camera);
+
+       camera->client = client;
+
+       err = i2c_attach_client(client);
+       if (err)
+               goto out_free_camera;
+
+       camera->version = i2c_smbus_read_byte_data(client, INDYCAM_VERSION);
+       if (camera->version != CAMERA_VERSION_INDY &&
+           camera->version != CAMERA_VERSION_MOOSE) {
+               err = -ENODEV;
+               goto out_detach_client;
+       }
+       printk(KERN_INFO "IndyCam v%d.%d detected\n",
+              INDYCAM_VERSION_MAJOR(camera->version),
+              INDYCAM_VERSION_MINOR(camera->version));
+
+       indycam_regdump(client);
+
+       // initialize
+       err = indycam_write_block(client, 0, sizeof(initseq),
+                                 (unsigned char *)&initseq);
+       if (err) {
+               printk(KERN_ERR "IndyCam initalization failed\n");
+               err = -EIO;
+               goto out_detach_client;
+       }
+
+       indycam_regdump(client);
+
+       // white balance
+       err = indycam_write_reg(client, INDYCAM_CONTROL,
+                         INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
+       if (err) {
+               printk(KERN_ERR "IndyCam white balance "
+                      "initialization failed\n");
+               err = -EIO;
+               goto out_detach_client;
+       }
+
+       indycam_regdump(client);
+
+       printk(KERN_INFO "IndyCam initialized\n");
+
+       return 0;
+
+out_detach_client:
+       i2c_detach_client(client);
+out_free_camera:
+       kfree(camera);
+out_free_client:
+       kfree(client);
+       return err;
+}
+
+static int indycam_probe(struct i2c_adapter *adap)
+{
+       /* Indy specific crap */
+       if (adap->id == VINO_ADAPTER)
+               return indycam_attach(adap, INDYCAM_ADDR, 0);
+       /* Feel free to add probe here :-) */
+       return -ENODEV;
+}
+
+static int indycam_detach(struct i2c_client *client)
+{
+       struct indycam *camera = i2c_get_clientdata(client);
+
+       i2c_detach_client(client);
+       kfree(camera);
+       kfree(client);
+       return 0;
+}
+
+static int indycam_command(struct i2c_client *client, unsigned int cmd,
+                          void *arg)
+{
+       // struct indycam *camera = i2c_get_clientdata(client);
+
+       /* The old video_decoder interface just isn't enough,
+        * so we'll use some custom commands. */
+       switch (cmd) {
+       case DECODER_GET_CAPABILITIES: {
+               struct video_decoder_capability *cap = arg;
+
+               cap->flags  = VIDEO_DECODER_NTSC;
+               cap->inputs = 1;
+               cap->outputs = 1;
+               break;
+       }
+       case DECODER_GET_STATUS: {
+               int *iarg = arg;
+
+               *iarg = DECODER_STATUS_GOOD | DECODER_STATUS_NTSC |
+                       DECODER_STATUS_COLOR;
+               break;
+       }
+       case DECODER_SET_NORM: {
+               int *iarg = arg;
+
+               switch (*iarg) {
+               case VIDEO_MODE_NTSC:
+                       break;
+               default:
+                       return -EINVAL;
+               }
+               break;
+       }
+       case DECODER_SET_INPUT: {
+               int *iarg = arg;
+
+               if (*iarg != 0)
+                       return -EINVAL;
+               break;
+       }
+       case DECODER_SET_OUTPUT: {
+               int *iarg = arg;
+
+               if (*iarg != 0)
+                       return -EINVAL;
+               break;
+       }
+       case DECODER_ENABLE_OUTPUT: {
+               /* Always enabled */
+               break;
+       }
+       case DECODER_SET_PICTURE: {
+               // struct video_picture *pic = arg;
+               /* TODO: convert values for indycam_set_controls() */
+               break;
+       }
+       case DECODER_INDYCAM_GET_CONTROLS: {
+               struct indycam_control *ctrl = arg;
+               indycam_get_controls(client, ctrl);
+       }
+       case DECODER_INDYCAM_SET_CONTROLS: {
+               struct indycam_control *ctrl = arg;
+               indycam_set_controls(client, ctrl);
+       }
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static struct i2c_driver i2c_driver_indycam = {
+       .owner          = THIS_MODULE,
+       .name           = "indycam",
+       .id             = I2C_DRIVERID_INDYCAM,
+       .flags          = I2C_DF_NOTIFY,
+       .attach_adapter = indycam_probe,
+       .detach_client  = indycam_detach,
+       .command        = indycam_command,
+};
+
+static int __init indycam_init(void)
+{
+       return i2c_add_driver(&i2c_driver_indycam);
+}
+
+static void __exit indycam_exit(void)
+{
+       i2c_del_driver(&i2c_driver_indycam);
+}
+
+module_init(indycam_init);
+module_exit(indycam_exit);
diff -urN linux/drivers/media/video/indycam.h 
linux/drivers/media/video/indycam.h
--- linux/drivers/media/video/indycam.h 2003/10/22 20:45:15     1.1
+++ linux/drivers/media/video/indycam.h 2005/08/10 16:38:59     1.2
@@ -0,0 +1,112 @@
+/*
+ *  indycam.h - Silicon Graphics IndyCam digital camera driver
+ *
+ *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
+ *  Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef _INDYCAM_H_
+#define _INDYCAM_H_
+
+/* I2C address for the Guinness Camera */
+#define INDYCAM_ADDR                   0x56
+
+/* Camera version */
+#define CAMERA_VERSION_INDY            0x10    /* v1.0 */
+#define CAMERA_VERSION_MOOSE           0x12    /* v1.2 */
+#define INDYCAM_VERSION_MAJOR(x)       (((x) & 0xf0) >> 4)
+#define INDYCAM_VERSION_MINOR(x)       ((x) & 0x0f)
+
+/* Register bus addresses */
+#define INDYCAM_CONTROL                        0x00
+#define INDYCAM_SHUTTER                        0x01
+#define INDYCAM_GAIN                   0x02
+#define INDYCAM_BRIGHTNESS             0x03 /* read-only */
+#define INDYCAM_RED_BALANCE            0x04
+#define INDYCAM_BLUE_BALANCE           0x05
+#define INDYCAM_RED_SATURATION         0x06
+#define INDYCAM_BLUE_SATURATION                0x07
+#define INDYCAM_GAMMA                  0x08
+#define INDYCAM_VERSION                        0x0e /* read-only */
+#define INDYCAM_RESET                  0x0f /* write-only */
+
+#define INDYCAM_LED                    0x46
+#define INDYCAM_ORIENTATION            0x47
+#define INDYCAM_BUTTON                 0x48
+
+/* Field definitions of registers */
+#define INDYCAM_CONTROL_AGCENA         (1<<0) /* automatic gain control */
+#define INDYCAM_CONTROL_AWBCTL         (1<<1) /* automatic white balance */
+                                               /* 2-3 are reserved */
+#define INDYCAM_CONTROL_EVNFLD         (1<<4)  /* read-only */
+
+#define INDYCAM_SHUTTER_10000          0x02    /* 1/10000 second */
+#define INDYCAM_SHUTTER_4000           0x04    /* 1/4000 second */
+#define INDYCAM_SHUTTER_2000           0x08    /* 1/2000 second */
+#define INDYCAM_SHUTTER_1000           0x10    /* 1/1000 second */
+#define INDYCAM_SHUTTER_500            0x20    /* 1/500 second */
+#define INDYCAM_SHUTTER_250            0x3f    /* 1/250 second */
+#define INDYCAM_SHUTTER_125            0x7e    /* 1/125 second */
+#define INDYCAM_SHUTTER_100            0x9e    /* 1/100 second */
+#define INDYCAM_SHUTTER_60             0x00    /* 1/60 second */
+
+#define INDYCAM_LED_ACTIVE                     0x10
+#define INDYCAM_LED_INACTIVE                   0x30
+#define INDYCAM_ORIENTATION_BOTTOM_TO_TOP      0x40
+#define INDYCAM_BUTTON_RELEASED                        0x10
+
+#define INDYCAM_SHUTTER_MIN            0x00
+#define INDYCAM_SHUTTER_MAX            0xff
+#define INDYCAM_GAIN_MIN                0x00
+#define INDYCAM_GAIN_MAX                0xff
+#define INDYCAM_RED_BALANCE_MIN        0x00 /* the effect is the opposite? */
+#define INDYCAM_RED_BALANCE_MAX        0xff
+#define INDYCAM_BLUE_BALANCE_MIN        0x00 /* the effect is the opposite? */
+#define INDYCAM_BLUE_BALANCE_MAX        0xff
+#define INDYCAM_RED_SATURATION_MIN      0x00
+#define INDYCAM_RED_SATURATION_MAX      0xff
+#define INDYCAM_BLUE_SATURATION_MIN    0x00
+#define INDYCAM_BLUE_SATURATION_MAX    0xff
+#define INDYCAM_GAMMA_MIN              0x00
+#define INDYCAM_GAMMA_MAX              0xff
+
+/* Driver interface definitions */
+
+#define INDYCAM_VALUE_ENABLED          1
+#define INDYCAM_VALUE_DISABLED         0
+#define INDYCAM_VALUE_UNCHANGED                -1
+
+/* When setting controls, a value of -1 leaves the control unchanged. */
+struct indycam_control {
+       int agc;        /* boolean */
+       int awb;        /* boolean */
+       int shutter;
+       int gain;
+       int red_balance;
+       int blue_balance;
+       int red_saturation;
+       int blue_saturation;
+       int gamma;
+};
+
+#define        DECODER_INDYCAM_GET_CONTROLS    _IOR('d', 193, struct 
indycam_control)
+#define        DECODER_INDYCAM_SET_CONTROLS    _IOW('d', 194, struct 
indycam_control)
+
+/* Default values for controls */
+
+#define INDYCAM_AGC_DEFAULT            INDYCAM_VALUE_ENABLED
+#define INDYCAM_AWB_DEFAULT            INDYCAM_VALUE_ENABLED
+
+#define INDYCAM_SHUTTER_DEFAULT                INDYCAM_SHUTTER_60
+#define INDYCAM_GAIN_DEFAULT           0x80
+#define INDYCAM_RED_BALANCE_DEFAULT    0x18
+#define INDYCAM_BLUE_BALANCE_DEFAULT   0xa4
+#define INDYCAM_RED_SATURATION_DEFAULT 0x80
+#define INDYCAM_BLUE_SATURATION_DEFAULT        0xc0
+#define INDYCAM_GAMMA_DEFAULT          0x80
+
+#endif
diff -urN linux/drivers/media/video/saa7191.c 
linux/drivers/media/video/saa7191.c
--- linux/drivers/media/video/saa7191.c 2003/10/22 20:45:15     1.1
+++ linux/drivers/media/video/saa7191.c 2005/08/10 16:38:59     1.2
@@ -0,0 +1,512 @@
+/*
+ *  saa7191.c - Philips SAA7191 video decoder driver
+ *
+ *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
+ *  Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <linux/videodev.h>
+#include <linux/video_decoder.h>
+#include <linux/i2c.h>
+
+#include "saa7191.h"
+
+#define SAA7191_MODULE_VERSION "0.0.3"
+
+MODULE_DESCRIPTION("Philips SAA7191 video decoder driver");
+MODULE_VERSION(SAA7191_MODULE_VERSION);
+MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
+MODULE_LICENSE("GPL");
+
+#define VINO_ADAPTER   (I2C_ALGO_SGI | I2C_HW_SGI_VINO)
+
+struct saa7191 {
+       struct i2c_client *client;
+
+       /* the register values are stored here as the actual
+        * I2C-registers are write-only */
+       unsigned char reg[25];
+
+       unsigned char norm;
+       unsigned char input;
+};
+
+static struct i2c_driver i2c_driver_saa7191;
+
+static const unsigned char initseq[] = {
+       0,      /* Subaddress */
+       0x50,   /* SAA7191_REG_IDEL */
+       0x30,   /* SAA7191_REG_HSYB */
+       0x00,   /* SAA7191_REG_HSYS */
+       0xe8,   /* SAA7191_REG_HCLB */
+       0xb6,   /* SAA7191_REG_HCLS */
+       0xf4,   /* SAA7191_REG_HPHI */
+       0x01,   /* SAA7191_REG_LUMA - chrominance trap active (CVBS) */
+       0x00,   /* SAA7191_REG_HUEC */
+       0xf8,   /* SAA7191_REG_CKTQ */
+       0xf8,   /* SAA7191_REG_CKTS */
+       0x90,   /* SAA7191_REG_PLSE */
+       0x90,   /* SAA7191_REG_SESE */
+       0x00,   /* SAA7191_REG_GAIN */
+       0x0c,   /* SAA7191_REG_STDC - not SECAM, slow time constant */
+       0x78,   /* SAA7191_REG_IOCK - chrominance from CVBS, GPSW1 & 2 off */
+       0x99,   /* SAA7191_REG_CTL3 - automatic field detection */
+       0x00,   /* SAA7191_REG_CTL4 */
+       0x2c,   /* SAA7191_REG_CHCV */
+       0x00,   /* unused */
+       0x00,   /* unused */
+       0x34,   /* SAA7191_REG_HS6B */
+       0x0a,   /* SAA7191_REG_HS6S */
+       0xf4,   /* SAA7191_REG_HC6B */
+       0xce,   /* SAA7191_REG_HC6S */
+       0xf4,   /* SAA7191_REG_HP6I */
+};
+
+/* SAA7191 register handling */
+
+static unsigned char saa7191_read_reg(struct i2c_client *client,
+                                     unsigned char reg)
+{
+       return ((struct saa7191 *)i2c_get_clientdata(client))->reg[reg];
+}
+
+static int saa7191_read_status(struct i2c_client *client,
+                              unsigned char *value)
+{
+       int ret;
+
+       ret = i2c_master_recv(client, value, 1);
+       if (ret < 0) {
+               printk(KERN_ERR "SAA7191: saa7191_read_status(): read failed");
+               return ret;
+       }
+
+       return 0;
+}
+
+
+static int saa7191_write_reg(struct i2c_client *client, unsigned char reg,
+                            unsigned char value)
+{
+
+       ((struct saa7191 *)i2c_get_clientdata(client))->reg[reg] = value;
+       return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+/* the first byte of data must be the first subaddress number (register) */
+static int saa7191_write_block(struct i2c_client *client,
+                              unsigned char length, unsigned char *data)
+{
+       int i;
+       int ret;
+
+       struct saa7191 *decoder = (struct saa7191 *)i2c_get_clientdata(client);
+       for (i = 0; i < (length - 1); i++) {
+               decoder->reg[data[0] + i] = data[i + 1];
+       }
+
+       ret = i2c_master_send(client, data, length);
+       if (ret < 0) {
+               printk(KERN_ERR "SAA7191: saa7191_write_block(): "
+                      "write failed");
+               return ret;
+       }
+
+       return 0;
+}
+
+/* Helper functions */
+
+static int saa7191_set_input(struct i2c_client *client, int input)
+{
+       unsigned char luma = saa7191_read_reg(client, SAA7191_REG_LUMA);
+       unsigned char iock = saa7191_read_reg(client, SAA7191_REG_IOCK);
+       int err;
+
+       switch (input) {
+       case SAA7191_INPUT_COMPOSITE: /* Set Composite input */
+               iock &= ~(SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW1
+                         | SAA7191_IOCK_GPSW2);
+               /* Chrominance trap active */
+               luma &= ~SAA7191_LUMA_BYPS;
+               break;
+       case SAA7191_INPUT_SVIDEO: /* Set S-Video input */
+               iock |= SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW2;
+               /* Chrominance trap bypassed */
+               luma |= SAA7191_LUMA_BYPS;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       err = saa7191_write_reg(client, SAA7191_REG_LUMA, luma);
+       if (err)
+               return -EIO;
+       err = saa7191_write_reg(client, SAA7191_REG_IOCK, iock);
+       if (err)
+               return -EIO;
+
+       return 0;
+}
+
+static int saa7191_set_norm(struct i2c_client *client, int norm)
+{
+       struct saa7191 *decoder = i2c_get_clientdata(client);
+       unsigned char stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
+       unsigned char ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
+       unsigned char chcv = saa7191_read_reg(client, SAA7191_REG_CHCV);
+       int err;
+
+       switch(norm) {
+       case SAA7191_NORM_AUTO: {
+               unsigned char status;
+
+               // does status depend on current norm ?
+               if (saa7191_read_status(client, &status))
+                       return -EIO;
+
+               stdc &= ~SAA7191_STDC_SECS;
+               ctl3 &= ~SAA7191_CTL3_FSEL;
+               ctl3 |= SAA7191_CTL3_AUFD;
+               chcv = (status & SAA7191_STATUS_FIDT)
+                              ? SAA7191_CHCV_NTSC : SAA7191_CHCV_PAL;
+               break;
+       }
+       case SAA7191_NORM_PAL:
+               stdc &= ~SAA7191_STDC_SECS;
+               ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
+               chcv = SAA7191_CHCV_PAL;
+               break;
+       case SAA7191_NORM_NTSC:
+               stdc &= ~SAA7191_STDC_SECS;
+               ctl3 &= ~SAA7191_CTL3_AUFD;
+               ctl3 |= SAA7191_CTL3_FSEL;
+               chcv = SAA7191_CHCV_NTSC;
+               break;
+       case SAA7191_NORM_SECAM:
+               stdc |= SAA7191_STDC_SECS;
+               ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
+               chcv = SAA7191_CHCV_PAL;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
+       if (err)
+               return -EIO;
+       err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
+       if (err)
+               return -EIO;
+       err = saa7191_write_reg(client, SAA7191_REG_CHCV, chcv);
+       if (err)
+               return -EIO;
+
+       decoder->norm = norm;
+
+       return 0;
+}
+
+static int saa7191_get_controls(struct i2c_client *client,
+                               struct saa7191_control *ctrl)
+{
+       unsigned char hue = saa7191_read_reg(client, SAA7191_REG_HUEC);
+       unsigned char stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
+
+       if (hue < 0x80) {
+               hue += 0x80;
+       } else {
+               hue -= 0x80;
+       }
+       ctrl->hue = hue;
+
+       ctrl->vtrc = (stdc & SAA7191_STDC_VTRC)
+               ? SAA7191_VALUE_ENABLED : SAA7191_VALUE_DISABLED;
+
+       return 0;
+}
+
+static int saa7191_set_controls(struct i2c_client *client,
+                               struct saa7191_control *ctrl)
+{
+       int err;
+
+       if (ctrl->hue >= 0) {
+               unsigned char hue = ctrl->hue & 0xff;
+               if (hue < 0x80) {
+                       hue += 0x80;
+               } else {
+                       hue -= 0x80;
+               }
+               err = saa7191_write_reg(client, SAA7191_REG_HUEC, hue);
+               if (err)
+                       return -EIO;
+       }
+       if (ctrl->vtrc >= 0) {
+               unsigned char stdc =
+                       saa7191_read_reg(client, SAA7191_REG_STDC);
+
+               if (ctrl->vtrc) {
+                       stdc |= SAA7191_STDC_VTRC;
+               } else {
+                       stdc &= ~SAA7191_STDC_VTRC;
+               }
+
+               err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
+               if (err)
+                       return -EIO;
+       }
+
+       return 0;
+}
+
+/* I2C-interface */
+
+static int saa7191_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+       int err = 0;
+       struct saa7191 *decoder;
+       struct i2c_client *client;
+
+       printk(KERN_INFO "Philips SAA7191 driver version %s\n",
+              SAA7191_MODULE_VERSION);
+
+       client = kmalloc(sizeof(*client), GFP_KERNEL);
+       if (!client)
+               return -ENOMEM;
+       decoder = kmalloc(sizeof(*decoder), GFP_KERNEL);
+       if (!decoder) {
+               err = -ENOMEM;
+               goto out_free_client;
+       }
+
+       memset(client, 0, sizeof(struct i2c_client));
+       memset(decoder, 0, sizeof(struct saa7191));
+
+       client->addr = addr;
+       client->adapter = adap;
+       client->driver = &i2c_driver_saa7191;
+       client->flags = 0;
+       strcpy(client->name, "saa7191 client");
+       i2c_set_clientdata(client, decoder);
+
+       decoder->client = client;
+
+       err = i2c_attach_client(client);
+       if (err)
+               goto out_free_decoder;
+
+       decoder->input = SAA7191_INPUT_COMPOSITE;
+       decoder->norm = SAA7191_NORM_AUTO;
+
+       err = saa7191_write_block(client, sizeof(initseq),
+                                 (unsigned char *)initseq);
+       if (err) {
+               printk(KERN_ERR "SAA7191 initialization failed\n");
+               goto out_detach_client;
+       }
+
+       printk(KERN_INFO "SAA7191 initialized\n");
+
+       return 0;
+
+out_detach_client:
+       i2c_detach_client(client);
+out_free_decoder:
+       kfree(decoder);
+out_free_client:
+       kfree(client);
+       return err;
+}
+
+static int saa7191_probe(struct i2c_adapter *adap)
+{
+       /* Always connected to VINO */
+       if (adap->id == VINO_ADAPTER)
+               return saa7191_attach(adap, SAA7191_ADDR, 0);
+       /* Feel free to add probe here :-) */
+       return -ENODEV;
+}
+
+static int saa7191_detach(struct i2c_client *client)
+{
+       struct saa7191 *decoder = i2c_get_clientdata(client);
+
+       i2c_detach_client(client);
+       kfree(decoder);
+       kfree(client);
+       return 0;
+}
+
+static int saa7191_command(struct i2c_client *client, unsigned int cmd,
+                          void *arg)
+{
+       struct saa7191 *decoder = i2c_get_clientdata(client);
+
+       switch (cmd) {
+       case DECODER_GET_CAPABILITIES: {
+               struct video_decoder_capability *cap = arg;
+
+               cap->flags  = VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
+                             VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
+               cap->inputs = (client->adapter->id == VINO_ADAPTER) ? 2 : 1;
+               cap->outputs = 1;
+               break;
+       }
+       case DECODER_GET_STATUS: {
+               int *iarg = arg;
+               unsigned char status;
+               int res = 0;
+
+               if (saa7191_read_status(client, &status)) {
+                       return -EIO;
+               }
+               if ((status & SAA7191_STATUS_HLCK) == 0)
+                       res |= DECODER_STATUS_GOOD;
+               if (status & SAA7191_STATUS_CODE)
+                       res |= DECODER_STATUS_COLOR;
+               switch (decoder->norm) {
+               case SAA7191_NORM_NTSC:
+                       res |= DECODER_STATUS_NTSC;
+                       break;
+               case SAA7191_NORM_PAL:
+                       res |= DECODER_STATUS_PAL;
+                       break;
+               case SAA7191_NORM_SECAM:
+                       res |= DECODER_STATUS_SECAM;
+                       break;
+               case SAA7191_NORM_AUTO:
+               default:
+                       if (status & SAA7191_STATUS_FIDT)
+                               res |= DECODER_STATUS_NTSC;
+                       else
+                               res |= DECODER_STATUS_PAL;
+                       break;
+               }
+               *iarg = res;
+               break;
+       }
+       case DECODER_SET_NORM: {
+               int *iarg = arg;
+
+               switch (*iarg) {
+               case VIDEO_MODE_AUTO:
+                       return saa7191_set_norm(client, SAA7191_NORM_AUTO);
+               case VIDEO_MODE_PAL:
+                       return saa7191_set_norm(client, SAA7191_NORM_PAL);
+               case VIDEO_MODE_NTSC:
+                       return saa7191_set_norm(client, SAA7191_NORM_NTSC);
+               case VIDEO_MODE_SECAM:
+                       return saa7191_set_norm(client, SAA7191_NORM_SECAM);
+               default:
+                       return -EINVAL;
+               }
+               break;
+       }
+       case DECODER_SET_INPUT: {
+               int *iarg = arg;
+
+               switch (client->adapter->id) {
+               case VINO_ADAPTER:
+                       return saa7191_set_input(client, *iarg);
+               default:
+                       if (*iarg != 0)
+                               return -EINVAL;
+               }
+               break;
+       }
+       case DECODER_SET_OUTPUT: {
+               int *iarg = arg;
+
+               /* not much choice of outputs */
+               if (*iarg != 0)
+                       return -EINVAL;
+               break;
+       }
+       case DECODER_ENABLE_OUTPUT: {
+               /* Always enabled */
+               break;
+       }
+       case DECODER_SET_PICTURE: {
+               struct video_picture *pic = arg;
+               unsigned val;
+               int err;
+
+               val = (pic->hue >> 8) - 0x80;
+               err = saa7191_write_reg(client, SAA7191_REG_HUEC, val);
+               if (err)
+                       return -EIO;
+               break;
+       }
+       case DECODER_SAA7191_GET_STATUS: {
+               struct saa7191_status *status = arg;
+               unsigned char status_reg;
+
+               if (saa7191_read_status(client, &status_reg))
+                       return -EIO;
+               status->signal = ((status_reg & SAA7191_STATUS_HLCK) == 0)
+                       ? SAA7191_VALUE_ENABLED : SAA7191_VALUE_DISABLED;
+               status->ntsc = (status_reg & SAA7191_STATUS_FIDT)
+                       ? SAA7191_VALUE_ENABLED : SAA7191_VALUE_DISABLED;
+               status->color = (status_reg & SAA7191_STATUS_CODE)
+                       ? SAA7191_VALUE_ENABLED : SAA7191_VALUE_DISABLED;
+
+               status->input = decoder->input;
+               status->norm = decoder->norm;
+       }
+       case DECODER_SAA7191_SET_NORM: {
+               int *norm = arg;
+               return saa7191_set_norm(client, *norm);
+       }
+       case DECODER_SAA7191_GET_CONTROLS: {
+               struct saa7191_control *ctrl = arg;
+               return saa7191_get_controls(client, ctrl);
+       }
+       case DECODER_SAA7191_SET_CONTROLS: {
+               struct saa7191_control *ctrl = arg;
+               return saa7191_set_controls(client, ctrl);
+       }
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static struct i2c_driver i2c_driver_saa7191 = {
+       .owner          = THIS_MODULE,
+       .name           = "saa7191",
+       .id             = I2C_DRIVERID_SAA7191,
+       .flags          = I2C_DF_NOTIFY,
+       .attach_adapter = saa7191_probe,
+       .detach_client  = saa7191_detach,
+       .command        = saa7191_command
+};
+
+static int saa7191_init(void)
+{
+       return i2c_add_driver(&i2c_driver_saa7191);
+}
+
+static void saa7191_exit(void)
+{
+       i2c_del_driver(&i2c_driver_saa7191);
+}
+
+module_init(saa7191_init);
+module_exit(saa7191_exit);
diff -urN linux/drivers/media/video/saa7191.h 
linux/drivers/media/video/saa7191.h
--- linux/drivers/media/video/saa7191.h 2003/10/22 20:45:15     1.1
+++ linux/drivers/media/video/saa7191.h 2005/08/10 16:38:59     1.2
@@ -0,0 +1,139 @@
+/*
+ *  saa7191.h - Philips SAA7191 video decoder driver
+ *
+ *  Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
+ *  Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef _SAA7191_H_
+#define _SAA7191_H_
+
+/* Philips SAA7191 DMSD I2C bus address */
+#define SAA7191_ADDR           0x8a
+
+/* Register subaddresses. */
+#define SAA7191_REG_IDEL       0x00
+#define SAA7191_REG_HSYB       0x01
+#define SAA7191_REG_HSYS       0x02
+#define SAA7191_REG_HCLB       0x03
+#define SAA7191_REG_HCLS       0x04
+#define SAA7191_REG_HPHI       0x05
+#define SAA7191_REG_LUMA       0x06
+#define SAA7191_REG_HUEC       0x07
+#define SAA7191_REG_CKTQ       0x08
+#define SAA7191_REG_CKTS       0x09
+#define SAA7191_REG_PLSE       0x0a
+#define SAA7191_REG_SESE       0x0b
+#define SAA7191_REG_GAIN       0x0c
+#define SAA7191_REG_STDC       0x0d
+#define SAA7191_REG_IOCK       0x0e
+#define SAA7191_REG_CTL3       0x0f
+#define SAA7191_REG_CTL4       0x10
+#define SAA7191_REG_CHCV       0x11
+#define SAA7191_REG_HS6B       0x14
+#define SAA7191_REG_HS6S       0x15
+#define SAA7191_REG_HC6B       0x16
+#define SAA7191_REG_HC6S       0x17
+#define SAA7191_REG_HP6I       0x18
+#define SAA7191_REG_STATUS     0xff    /* not really a subaddress */
+
+/* Status Register definitions */
+#define SAA7191_STATUS_CODE    0x01    /* color detected flag */
+#define SAA7191_STATUS_FIDT    0x20    /* format type NTSC/PAL */
+#define SAA7191_STATUS_HLCK    0x40    /* PLL unlocked/locked */
+#define SAA7191_STATUS_STTC    0x80    /* tv/vtr time constant */
+
+/* Luminance Control Register definitions */
+#define SAA7191_LUMA_BYPS      0x80
+
+/* Chroma Gain Control Settings Register definitions */
+/* 0=automatic colour-killer enabled, 1=forced colour on */
+#define SAA7191_GAIN_COLO      0x80
+
+/* Standard/Mode Control Register definitions */
+/* tv/vtr mode bit: 0=TV mode (slow time constant),
+ * 1=VTR mode (fast time constant) */
+#define SAA7191_STDC_VTRC      0x80
+/* SECAM mode bit: 0=other standards, 1=SECAM */
+#define SAA7191_STDC_SECS      0x01
+/* the bit fields above must be or'd with this value */
+#define SAA7191_STDC_VALUE     0x0c
+
+/* I/O and Clock Control Register definitions */
+/* horizontal clock PLL: 0=PLL closed,
+ * 1=PLL circuit open and horizontal freq fixed */
+#define SAA7191_IOCK_HPLL      0x80
+/* S-VHS bit (chrominance from CVBS or from chrominance input):
+ * 0=controlled by BYPS-bit, 1=from chrominance input */
+#define SAA7191_IOCK_CHRS      0x04
+/* general purpose switch 2
+ * VINO-specific: 0=used with CVBS, 1=used with S-Video */
+#define SAA7191_IOCK_GPSW2     0x02
+/* general purpose switch 1 */
+/* VINO-specific: 0=always, 1=not used!*/
+#define SAA7191_IOCK_GPSW1     0x01
+
+/* Miscellaneous Control #1 Register definitions */
+/* automatic field detection (50/60Hz standard) */
+#define SAA7191_CTL3_AUFD      0x80
+/* field select: (if AUFD=0)
+ * 0=50Hz (625 lines), 1=60Hz (525 lines) */
+#define SAA7191_CTL3_FSEL      0x40
+/* the bit fields above must be or'd with this value */
+#define SAA7191_CTL3_VALUE     0x19
+
+/* Chrominance Gain Control Register definitions
+ * (nominal value for UV CCIR level) */
+#define SAA7191_CHCV_NTSC      0x2c
+#define SAA7191_CHCV_PAL       0x59
+
+/* Driver interface definitions */
+#define SAA7191_INPUT_COMPOSITE        0
+#define SAA7191_INPUT_SVIDEO   1
+
+#define SAA7191_NORM_AUTO      0
+#define SAA7191_NORM_PAL       1
+#define SAA7191_NORM_NTSC      2
+#define SAA7191_NORM_SECAM     3
+
+#define SAA7191_VALUE_ENABLED          1
+#define SAA7191_VALUE_DISABLED         0
+#define SAA7191_VALUE_UNCHANGED                -1
+
+struct saa7191_status {
+       /* 0=no signal, 1=signal active*/
+       int signal;
+       /* 0=50hz (pal) signal, 1=60hz (ntsc) signal */
+       int ntsc;
+       /* 0=no color detected, 1=color detected */
+       int color;
+
+       /* current SAA7191_INPUT_ */
+       int input;
+       /* current SAA7191_NORM_ */
+       int norm;
+};
+
+#define SAA7191_HUE_MIN                0x00
+#define SAA7191_HUE_MAX                0xff
+#define SAA7191_HUE_DEFAULT    0x80
+
+#define SAA7191_VTRC_MIN       0x00
+#define SAA7191_VTRC_MAX       0x01
+#define SAA7191_VTRC_DEFAULT   0x00
+
+struct saa7191_control {
+       int hue;
+       int vtrc;
+};
+
+#define        DECODER_SAA7191_GET_STATUS      _IOR('d', 195, struct 
saa7191_status)
+#define        DECODER_SAA7191_SET_NORM        _IOW('d', 196, int)
+#define        DECODER_SAA7191_GET_CONTROLS    _IOR('d', 197, struct 
saa7191_control)
+#define        DECODER_SAA7191_SET_CONTROLS    _IOW('d', 198, struct 
saa7191_control)
+
+#endif
diff -urN linux/drivers/media/video/Makefile linux/drivers/media/video/Makefile
--- linux/drivers/media/video/Makefile  2005/07/11 20:47:19     1.28
+++ linux/drivers/media/video/Makefile  2005/08/10 16:38:59     1.29
@@ -29,7 +29,7 @@
 obj-$(CONFIG_VIDEO_ZORAN) += zr36067.o videocodec.o
 obj-$(CONFIG_VIDEO_PMS) += pms.o
 obj-$(CONFIG_VIDEO_PLANB) += planb.o
-obj-$(CONFIG_VIDEO_VINO) += vino.o
+obj-$(CONFIG_VIDEO_VINO) += vino.o saa7191.o indycam.o
 obj-$(CONFIG_VIDEO_STRADIS) += stradis.o
 obj-$(CONFIG_VIDEO_CPIA) += cpia.o
 obj-$(CONFIG_VIDEO_CPIA_PP) += cpia_pp.o
diff -urN linux/drivers/media/video/vino.c linux/drivers/media/video/vino.c
--- linux/drivers/media/video/vino.c    2005/07/10 10:29:01     1.8
+++ linux/drivers/media/video/vino.c    2005/08/10 16:38:59     1.9
@@ -1,80 +1,606 @@
 /*
- * (incomplete) Driver for the VINO (Video In No Out) system found in SGI 
Indys.
+ * Driver for the VINO (Video In No Out) system found in SGI Indys.
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License version 2 as published by the Free Software Foundation.
  *
+ * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
+ *
+ * Based on the previous version of the driver for 2.4 kernels by:
  * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
  */
 
-#include <linux/module.h>
+/*
+ * TODO:
+ * - remove "hacks" from memory allocation code and implement nopage()
+ * - check decimation, calculating and reporting image size when
+ *   using decimation
+ * - check vino_acquire_input(), vino_set_input() and channel
+ *   ownership handling
+ * - report VINO error-interrupts via ioctls ?
+ * - implement picture controls (all implemented?)
+ * - use macros for boolean values (?)
+ * - implement user mode buffers and overlay (?)
+ */
+
 #include <linux/init.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/wrapper.h>
-#include <linux/errno.h>
-#include <linux/irq.h>
+#include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/videodev.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/time.h>
+#include <linux/moduleparam.h>
+
+#ifdef CONFIG_KMOD
+#include <linux/kmod.h>
+#endif
+
 #include <linux/i2c.h>
 #include <linux/i2c-algo-sgi.h>
 
-#include <asm/addrspace.h>
-#include <asm/system.h>
-#include <asm/bootinfo.h>
-#include <asm/pgtable.h>
+#include <linux/videodev.h>
+#include <linux/videodev2.h>
+#include <linux/video_decoder.h>
+
 #include <asm/paccess.h>
 #include <asm/io.h>
 #include <asm/sgi/ip22.h>
-#include <asm/sgi/hpc3.h>
 #include <asm/sgi/mc.h>
 
 #include "vino.h"
+#include "saa7191.h"
+#include "indycam.h"
 
-/* debugging? */
-#if 1
-#define DEBUG(x...)     printk(x);
+/* Uncomment the following line to get lots and lots of (mostly useless)
+ * debug info.
+ * Note that the debug output also slows down the driver significantly */
+// #define VINO_DEBUG
+
+#define VINO_MODULE_VERSION "0.0.3"
+#define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 3)
+
+MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
+MODULE_VERSION(VINO_MODULE_VERSION);
+MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
+MODULE_LICENSE("GPL");
+
+#define mem_map_reserve(p) set_bit(PG_reserved, &((p)->flags))
+#define mem_map_unreserve(p) clear_bit(PG_reserved, &((p)->flags))
+
+#ifdef VINO_DEBUG
+#define dprintk(x...) printk("VINO: " x);
 #else
-#define DEBUG(x...)
+#define dprintk(x...)
 #endif
 
+#define VINO_NO_CHANNEL                        0
+#define VINO_CHANNEL_A                 1
+#define VINO_CHANNEL_B                 2
+
+#define VINO_PAL_WIDTH                 768
+#define VINO_PAL_HEIGHT                        576
+#define VINO_NTSC_WIDTH                        640
+#define VINO_NTSC_HEIGHT               480
+
+#define VINO_MIN_WIDTH                 32
+#define VINO_MIN_HEIGHT                        32
+
+#define VINO_CLIPPING_START_ODD_D1     1
+#define VINO_CLIPPING_START_ODD_PAL    1
+#define VINO_CLIPPING_START_ODD_NTSC   1
+
+#define VINO_CLIPPING_START_EVEN_D1    2
+#define VINO_CLIPPING_START_EVEN_PAL   2
+#define VINO_CLIPPING_START_EVEN_NTSC  2
+
+#define VINO_INPUT_CHANNEL_COUNT       3
+
+#define VINO_INPUT_NONE                        -1
+#define VINO_INPUT_COMPOSITE           0
+#define VINO_INPUT_SVIDEO              1
+#define VINO_INPUT_D1                  2
+
+#define VINO_PAGE_RATIO                        (PAGE_SIZE / VINO_PAGE_SIZE)
+
+#define VINO_FIFO_THRESHOLD_DEFAULT    512
+
+/*#define VINO_FRAMEBUFFER_SIZE                (VINO_PAL_WIDTH * 
VINO_PAL_HEIGHT * 4 \
+  + 2 * PAGE_SIZE)*/
+#define VINO_FRAMEBUFFER_SIZE          ((VINO_PAL_WIDTH \
+                                         * VINO_PAL_HEIGHT * 4 \
+                                         + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
+
+#define VINO_FRAMEBUFFER_MAX_COUNT     8
+
+#define VINO_FRAMEBUFFER_UNUSED                0
+#define VINO_FRAMEBUFFER_IN_USE                1
+#define VINO_FRAMEBUFFER_READY         2
+
+#define VINO_QUEUE_ERROR               -1
+#define VINO_QUEUE_MAGIC               0x20050125
+
+#define VINO_MEMORY_NONE               0
+#define VINO_MEMORY_MMAP               1
+#define VINO_MEMORY_USERPTR            2
 
-/* VINO ASIC registers */
-struct sgi_vino *vino;
+#define VINO_DUMMY_DESC_COUNT          4
+#define VINO_DESC_FETCH_DELAY          5       /* microseconds */
 
-static const char *vinostr = "VINO IndyCam/TV";
-static int threshold_a = 512;
-static int threshold_b = 512;
-
-struct vino_device {
-       struct video_device vdev;
-#define VINO_CHAN_A            1
-#define VINO_CHAN_B            2
-       int chan;
+/* the number is the index for vino_data_formats */
+#define VINO_DATA_FMT_NONE             -1
+#define VINO_DATA_FMT_GREY             0
+#define VINO_DATA_FMT_RGB332           1
+#define VINO_DATA_FMT_RGB32            2
+#define VINO_DATA_FMT_YUV              3
+//#define VINO_DATA_FMT_RGB24          4
+
+#define VINO_DATA_FMT_COUNT            4
+
+#define VINO_DATA_NORM_NONE            -1
+#define VINO_DATA_NORM_NTSC            0
+#define VINO_DATA_NORM_PAL             1
+#define VINO_DATA_NORM_SECAM           2
+#define VINO_DATA_NORM_D1              3
+/* The following is a special entry that can be used to
+ * autodetect the norm. */
+#define VINO_DATA_NORM_AUTO            0xff
+
+#define VINO_DATA_NORM_COUNT           4
+
+/* Internal data structure definitions */
+
+struct vino_input {
+       char *name;
+       v4l2_std_id std;
+};
+
+struct vino_clipping {
+       unsigned int left, right, top, bottom;
+};
+
+struct vino_data_format {
+       /* the description */
+       char *description;
+       /* bytes per pixel */
+       unsigned int bpp;
+       /* V4L2 fourcc code */
+       __u32 pixelformat;
+       /* V4L2 colorspace (duh!) */
+       enum v4l2_colorspace colorspace;
+};
+
+struct vino_data_norm {
+       char *description;
+       unsigned int width, height;
+       struct vino_clipping odd;
+       struct vino_clipping even;
+
+       v4l2_std_id std;
+       unsigned int fps_min, fps_max;
+       __u32 framelines;
+};
+
+struct vino_descriptor_table {
+       /* the number of PAGE_SIZE sized pages in the buffer */
+       unsigned int page_count;
+       /* virtual (kmalloc'd) pointers to the actual data
+        * (in PAGE_SIZE chunks, used with mmap streaming) */
+       unsigned long *virtual;
+
+       /* cpu address for the VINO descriptor table
+        * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
+       unsigned long *dma_cpu;
+       /* dma address for the VINO descriptor table
+        * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
+       dma_addr_t dma;
+};
+
+struct vino_framebuffer {
+       /* identifier nubmer */
+       unsigned int id;
+       /* the length of the whole buffer */
+       unsigned int size;
+       /* the length of actual data in buffer */
+       unsigned int data_size;
+       /* the data format */
+       unsigned int data_format;
+       /* the state of buffer data */
+       unsigned int state;
+       /* is the buffer mapped in user space? */
+       unsigned int map_count;
+       /* memory offset for mmap() */
+       unsigned int offset;
+       /* frame counter */
+       unsigned int frame_counter;
+       /* timestamp (written when image capture finishes) */
+       struct timeval timestamp;
+
+       struct vino_descriptor_table desc_table;
+
+       spinlock_t state_lock;
+};
+
+struct vino_framebuffer_fifo {
+       unsigned int length;
+
+       unsigned int used;
+       unsigned int head;
+       unsigned int tail;
+
+       unsigned int data[VINO_FRAMEBUFFER_MAX_COUNT];
+};
+
+struct vino_framebuffer_queue {
+       unsigned int magic;
+
+       /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
+       unsigned int type;
+       unsigned int length;
+
+       /* data field of in and out contain index numbers for buffer */
+       struct vino_framebuffer_fifo in;
+       struct vino_framebuffer_fifo out;
+
+       struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_MAX_COUNT];
+
+       spinlock_t queue_lock;
+       struct semaphore queue_sem;
+       wait_queue_head_t frame_wait_queue;
+};
+
+struct vino_channel_settings {
+       unsigned int channel;
+
+       int input;
+       unsigned int data_format;
+       unsigned int data_norm;
+       struct vino_clipping clipping;
+       unsigned int decimation;
+       unsigned int line_size;
+       unsigned int alpha;
+       unsigned int fps;
+       unsigned int framert_reg;
+
+       unsigned int fifo_threshold;
+
+       struct vino_framebuffer_queue fb_queue;
+
+       /* number of the current field */
+       unsigned int field;
+
+       /* read in progress */
+       int reading;
+       /* streaming is active */
+       int streaming;
+       /* the driver is currently processing the queue */
+       int capturing;
+
+       struct semaphore sem;
+       spinlock_t capture_lock;
+
+       unsigned int users;
+
+       /* V4L support */
+       struct video_device *v4l_device;
 };
 
 struct vino_client {
+       /* the channel which owns this client:
+        * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
+       unsigned int owner;
        struct i2c_client *driver;
-       int owner;
 };
 
-struct vino_video {
-       struct vino_device chA;
-       struct vino_device chB;
+struct vino_settings {
+       struct vino_channel_settings a;
+       struct vino_channel_settings b;
 
        struct vino_client decoder;
        struct vino_client camera;
 
-       struct semaphore input_lock;
+       /* a lock for vino register access */
+       spinlock_t vino_lock;
+       /* a lock for channel input changes */
+       spinlock_t input_lock;
 
-       /* Loaded into VINO descriptors to clear End Of Descriptors table
-        * interupt condition */
        unsigned long dummy_page;
-       unsigned int dummy_buf[4] __attribute__((aligned(8)));
+       struct vino_descriptor_table dummy_desc_table;
+};
+
+/* Module parameters */
+
+/*
+ * Using vino_pixel_conversion the ARGB32-format pixels supplied
+ * by the VINO chip can be converted to more common formats
+ * like RGBA32 (or probably RGB24 in the future). This way we
+ * can give out data that can be specified correctly with
+ * the V4L2-definitions.
+ *
+ * The pixel format is specified as RGBA32 when no conversion
+ * is used.
+ *
+ * Note that this only affects the 32-bit bit depth.
+ *
+ * Use non-zero value to enable conversion.
+ */
+static int vino_pixel_conversion = 0;
+module_param_named(pixelconv, vino_pixel_conversion, int, 0);
+MODULE_PARM_DESC(pixelconv,
+                "enable pixel conversion (non-zero value enables)");
+
+/* Internal data structures */
+
+static struct sgi_vino *vino;
+
+static struct vino_settings *vino_drvdata;
+
+static const char *vino_driver_name = "vino";
+static const char *vino_driver_description = "SGI VINO";
+static const char *vino_bus_name = "GIO64 bus";
+static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
+static const char *vino_v4l_device_name_b = "SGI VINO Channel B";
+
+static const struct vino_input vino_inputs[] = {
+       {
+               .name           = "Composite",
+               .std            = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
+       },{
+               .name           = "S-Video",
+               .std            = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
+       },{
+               .name           = "D1 (IndyCam)",
+               .std            = V4L2_STD_NTSC,
+       }
+};
+
+static const struct vino_data_format vino_data_formats[] = {
+       {
+               .description    = "8-bit greyscale",
+               .bpp            = 1,
+               .pixelformat    = V4L2_PIX_FMT_GREY,
+               .colorspace     = V4L2_COLORSPACE_SMPTE170M,
+       },{
+               .description    = "8-bit dithered RGB 3-3-2",
+               .bpp            = 1,
+               .pixelformat    = V4L2_PIX_FMT_RGB332,
+               .colorspace     = V4L2_COLORSPACE_SRGB,
+       },{
+               .description    = "32-bit RGB",
+               .bpp            = 4,
+               .pixelformat    = V4L2_PIX_FMT_RGB32,
+               .colorspace     = V4L2_COLORSPACE_SRGB,
+       },{
+               .description    = "YUV 4:2:2",
+               .bpp            = 4,
+               .pixelformat    = V4L2_PIX_FMT_YUYV, // XXX: swapped?
+               .colorspace     = V4L2_COLORSPACE_SMPTE170M,
+       }/*,{
+               .description    = "24-bit RGB",
+               .bpp            = 3,
+               .pixelformat    = V4L2_PIX_FMT_RGB24,
+               .colorspace     = V4L2_COLORSPACE_SRGB,
+               }*/
+};
+
+static const struct vino_data_norm vino_data_norms[] = {
+       {
+               .description    = "NTSC",
+               .std            = V4L2_STD_NTSC,
+               .fps_min        = 6,
+               .fps_max        = 30,
+               .framelines     = 525,
+               .width          = VINO_NTSC_WIDTH,
+               .height         = VINO_NTSC_HEIGHT,
+               .odd            = {
+                       .top    = VINO_CLIPPING_START_ODD_NTSC,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_ODD_NTSC
+                       + VINO_NTSC_HEIGHT / 2 - 1,
+                       .right  = VINO_NTSC_WIDTH,
+               },
+               .even           = {
+                       .top    = VINO_CLIPPING_START_EVEN_NTSC,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_EVEN_NTSC
+                       + VINO_NTSC_HEIGHT / 2 - 1,
+                       .right  = VINO_NTSC_WIDTH,
+               },
+       },{
+               .description    = "PAL",
+               .std            = V4L2_STD_PAL,
+               .fps_min        = 5,
+               .fps_max        = 25,
+               .framelines     = 625,
+               .width          = VINO_PAL_WIDTH,
+               .height         = VINO_PAL_HEIGHT,
+               .odd            = {
+                       .top    = VINO_CLIPPING_START_ODD_PAL,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_ODD_PAL
+                       + VINO_PAL_HEIGHT / 2 - 1,
+                       .right  = VINO_PAL_WIDTH,
+               },
+               .even           = {
+                       .top    = VINO_CLIPPING_START_EVEN_PAL,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_EVEN_PAL
+                       + VINO_PAL_HEIGHT / 2 - 1,
+                       .right  = VINO_PAL_WIDTH,
+               },
+       },{
+               .description    = "SECAM",
+               .std            = V4L2_STD_SECAM,
+               .fps_min        = 5,
+               .fps_max        = 25,
+               .framelines     = 625,
+               .width          = VINO_PAL_WIDTH,
+               .height         = VINO_PAL_HEIGHT,
+               .odd            = {
+                       .top    = VINO_CLIPPING_START_ODD_PAL,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_ODD_PAL
+                       + VINO_PAL_HEIGHT / 2 - 1,
+                       .right  = VINO_PAL_WIDTH,
+               },
+               .even           = {
+                       .top    = VINO_CLIPPING_START_EVEN_PAL,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_EVEN_PAL
+                       + VINO_PAL_HEIGHT / 2 - 1,
+                       .right  = VINO_PAL_WIDTH,
+               },
+       },{
+               .description    = "NTSC (D1 input)",
+               .std            = V4L2_STD_NTSC,
+               .fps_min        = 6,
+               .fps_max        = 30,
+               .framelines     = 525,
+               .width          = VINO_NTSC_WIDTH,
+               .height         = VINO_NTSC_HEIGHT,
+               .odd            = {
+                       .top    = VINO_CLIPPING_START_ODD_D1,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_ODD_D1
+                       + VINO_NTSC_HEIGHT / 2 - 1,
+                       .right  = VINO_NTSC_WIDTH,
+               },
+               .even           = {
+                       .top    = VINO_CLIPPING_START_EVEN_D1,
+                       .left   = 0,
+                       .bottom = VINO_CLIPPING_START_EVEN_D1
+                       + VINO_NTSC_HEIGHT / 2 - 1,
+                       .right  = VINO_NTSC_WIDTH,
+               },
+       }
+};
+
+#define VINO_INDYCAM_V4L2_CONTROL_COUNT                9
+
+struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
+       {
+               .id = V4L2_CID_AUTOGAIN,
+               .type = V4L2_CTRL_TYPE_BOOLEAN,
+               .name = "Automatic Gain Control",
+               .minimum = 0,
+               .maximum = 1,
+               .step = 1,
+               .default_value = INDYCAM_AGC_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_AUTO_WHITE_BALANCE,
+               .type = V4L2_CTRL_TYPE_BOOLEAN,
+               .name = "Automatic White Balance",
+               .minimum = 0,
+               .maximum = 1,
+               .step = 1,
+               .default_value = INDYCAM_AWB_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_GAIN,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Gain",
+               .minimum = INDYCAM_GAIN_MIN,
+               .maximum = INDYCAM_GAIN_MAX,
+               .step = 1,
+               .default_value = INDYCAM_GAIN_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_PRIVATE_BASE,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Red Saturation",
+               .minimum = INDYCAM_RED_SATURATION_MIN,
+               .maximum = INDYCAM_RED_SATURATION_MAX,
+               .step = 1,
+               .default_value = INDYCAM_RED_SATURATION_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_PRIVATE_BASE + 1,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Blue Saturation",
+               .minimum = INDYCAM_BLUE_SATURATION_MIN,
+               .maximum = INDYCAM_BLUE_SATURATION_MAX,
+               .step = 1,
+               .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_RED_BALANCE,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Red Balance",
+               .minimum = INDYCAM_RED_BALANCE_MIN,
+               .maximum = INDYCAM_RED_BALANCE_MAX,
+               .step = 1,
+               .default_value = INDYCAM_RED_BALANCE_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_BLUE_BALANCE,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Blue Balance",
+               .minimum = INDYCAM_BLUE_BALANCE_MIN,
+               .maximum = INDYCAM_BLUE_BALANCE_MAX,
+               .step = 1,
+               .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_EXPOSURE,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Shutter Control",
+               .minimum = INDYCAM_SHUTTER_MIN,
+               .maximum = INDYCAM_SHUTTER_MAX,
+               .step = 1,
+               .default_value = INDYCAM_SHUTTER_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_GAMMA,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Gamma",
+               .minimum = INDYCAM_GAMMA_MIN,
+               .maximum = INDYCAM_GAMMA_MAX,
+               .step = 1,
+               .default_value = INDYCAM_GAMMA_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       }
 };
 
-static struct vino_video *Vino;
+#define VINO_SAA7191_V4L2_CONTROL_COUNT                2
+
+struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
+       {
+               .id = V4L2_CID_HUE,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+               .name = "Hue",
+               .minimum = SAA7191_HUE_MIN,
+               .maximum = SAA7191_HUE_MAX,
+               .step = 1,
+               .default_value = SAA7191_HUE_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       },{
+               .id = V4L2_CID_PRIVATE_BASE,
+               .type = V4L2_CTRL_TYPE_BOOLEAN,
+               .name = "VTR Time Constant",
+               .minimum = SAA7191_VTRC_MIN,
+               .maximum = SAA7191_VTRC_MAX,
+               .step = 1,
+               .default_value = SAA7191_VTRC_DEFAULT,
+               .flags = 0,
+               .reserved = { 0, 0 },
+       }
+};
+
+/* VINO I2C bus functions */
 
 unsigned i2c_vino_getctrl(void *data)
 {
@@ -112,49 +638,49 @@
  */
 static int i2c_vino_client_reg(struct i2c_client *client)
 {
-       int res = 0;
+       int ret = 0;
 
-       down(&Vino->input_lock);
+       spin_lock(&vino_drvdata->input_lock);
        switch (client->driver->id) {
        case I2C_DRIVERID_SAA7191:
-               if (Vino->decoder.driver)
-                       res = -EBUSY;
+               if (vino_drvdata->decoder.driver)
+                       ret = -EBUSY;
                else
-                       Vino->decoder.driver = client;
+                       vino_drvdata->decoder.driver = client;
                break;
        case I2C_DRIVERID_INDYCAM:
-               if (Vino->camera.driver)
-                       res = -EBUSY;
+               if (vino_drvdata->camera.driver)
+                       ret = -EBUSY;
                else
-                       Vino->camera.driver = client;
+                       vino_drvdata->camera.driver = client;
                break;
        default:
-               res = -ENODEV;
+               ret = -ENODEV;
        }
-       up(&Vino->input_lock);
+       spin_unlock(&vino_drvdata->input_lock);
 
-       return res;
+       return ret;
 }
 
 static int i2c_vino_client_unreg(struct i2c_client *client)
 {
-       int res = 0;
+       int ret = 0;
 
-       down(&Vino->input_lock);
-       if (client == Vino->decoder.driver) {
-               if (Vino->decoder.owner)
-                       res = -EBUSY;
+       spin_lock(&vino_drvdata->input_lock);
+       if (client == vino_drvdata->decoder.driver) {
+               if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
+                       ret = -EBUSY;
                else
-                       Vino->decoder.driver = NULL;
-       } else if (client == Vino->camera.driver) {
-               if (Vino->camera.owner)
-                       res = -EBUSY;
+                       vino_drvdata->decoder.driver = NULL;
+       } else if (client == vino_drvdata->camera.driver) {
+               if (vino_drvdata->camera.owner != VINO_NO_CHANNEL)
+                       ret = -EBUSY;
                else
-                       Vino->camera.driver = NULL;
+                       vino_drvdata->camera.driver = NULL;
        }
-       up(&Vino->input_lock);
+       spin_unlock(&vino_drvdata->input_lock);
 
-       return res;
+       return ret;
 }
 
 static struct i2c_adapter vino_i2c_adapter =
@@ -176,172 +702,3591 @@
        return i2c_sgi_del_bus(&vino_i2c_adapter);
 }
 
+static int i2c_camera_command(unsigned int cmd, void *arg)
+{
+       return vino_drvdata->camera.driver->
+               driver->command(vino_drvdata->camera.driver,
+                               cmd, arg);
+}
+
+static int i2c_decoder_command(unsigned int cmd, void *arg)
+{
+       return vino_drvdata->decoder.driver->
+               driver->command(vino_drvdata->decoder.driver,
+                               cmd, arg);
+}
+
+/* VINO framebuffer/DMA descriptor management */
+
+static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
+                                              unsigned int count)
+{
+       unsigned int i;
+
+       dprintk("vino_free_buffer_with_count(): count = %d\n", count);
+
+       for (i = 0; i < count; i++) {
+               mem_map_unreserve(virt_to_page(fb->desc_table.virtual[i]));
+               dma_unmap_single(NULL,
+                                fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
+                                PAGE_SIZE, DMA_FROM_DEVICE);
+               free_page(fb->desc_table.virtual[i]);
+       }
+
+       dma_free_coherent(NULL,
+                         VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
+                         sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
+                         fb->desc_table.dma);
+       kfree(fb->desc_table.virtual);
+
+       memset(fb, 0, sizeof(struct vino_framebuffer));
+}
+
+static void vino_free_buffer(struct vino_framebuffer *fb)
+{
+       vino_free_buffer_with_count(fb, fb->desc_table.page_count);
+}
 
-static void vino_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static int vino_allocate_buffer(struct vino_framebuffer *fb,
+                               unsigned int size)
 {
+       unsigned int count, i, j;
+       int ret = 0;
+
+       dprintk("vino_allocate_buffer():\n");
+
+       if (size < 1)
+               return -EINVAL;
+
+       memset(fb, 0, sizeof(struct vino_framebuffer));
+
+       count = ((size / PAGE_SIZE) + 4) & ~3;
+
+       dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
+               size, count);
+
+       /* allocate memory for table with virtual (page) addresses */
+       fb->desc_table.virtual = (unsigned long *)
+               kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
+       if (!fb->desc_table.virtual)
+               return -ENOMEM;
+
+       /* allocate memory for table with dma addresses
+        * (has space for four extra descriptors) */
+       fb->desc_table.dma_cpu =
+               dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
+                                  sizeof(dma_addr_t), &fb->desc_table.dma,
+                                  GFP_KERNEL | GFP_DMA);
+       if (!fb->desc_table.dma_cpu) {
+               ret = -ENOMEM;
+               goto out_free_virtual;
+       }
+
+       /* allocate pages for the buffer and acquire the according
+        * dma addresses */
+       for (i = 0; i < count; i++) {
+               dma_addr_t dma_data_addr;
+
+               fb->desc_table.virtual[i] =
+                       get_zeroed_page(GFP_KERNEL | GFP_DMA);
+               if (!fb->desc_table.virtual[i]) {
+                       ret = -ENOBUFS;
+                       break;
+               }
+
+               dma_data_addr =
+                       dma_map_single(NULL,
+                                      (void *)fb->desc_table.virtual[i],
+                                      PAGE_SIZE, DMA_FROM_DEVICE);
+
+               for (j = 0; j < VINO_PAGE_RATIO; j++) {
+                       fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
+                               dma_data_addr + VINO_PAGE_SIZE * j;
+               }
+
+               mem_map_reserve(virt_to_page(fb->desc_table.virtual[i]));
+       }
+
+       /* page_count needs to be set anyway, because the descriptor table has
+        * been allocated according to this number */
+       fb->desc_table.page_count = count;
+
+       if (ret) {
+               /* the descriptor with index i doesn't contain
+                * a valid address yet */
+               vino_free_buffer_with_count(fb, i);
+               return ret;
+       }
+
+       //fb->size = size;
+       fb->size = count * PAGE_SIZE;
+       fb->data_format = VINO_DATA_FMT_NONE;
+
+       /* set the dma stop-bit for the last (count+1)th descriptor */
+       fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
+       return 0;
+
+ out_free_virtual:
+       kfree(fb->desc_table.virtual);
+       return ret;
 }
 
-static int vino_open(struct video_device *dev, int flags)
+#if 0
+/* user buffers not fully implemented yet */
+static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
+                                    void *user,
+                                    unsigned int size)
 {
-       struct vino_device *videv = (struct vino_device *)dev;
+       unsigned int count, i, j;
+       int ret = 0;
+
+       dprintk("vino_prepare_user_buffer():\n");
+
+       if (size < 1)
+               return -EINVAL;
+
+       memset(fb, 0, sizeof(struct vino_framebuffer));
+
+       count = ((size / PAGE_SIZE)) & ~3;
+
+       dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
+               size, count);
+
+       /* allocate memory for table with virtual (page) addresses */
+       fb->desc_table.virtual = (unsigned long *)
+               kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
+       if (!fb->desc_table.virtual)
+               return -ENOMEM;
+
+       /* allocate memory for table with dma addresses
+        * (has space for four extra descriptors) */
+       fb->desc_table.dma_cpu =
+               dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
+                                  sizeof(dma_addr_t), &fb->desc_table.dma,
+                                  GFP_KERNEL | GFP_DMA);
+       if (!fb->desc_table.dma_cpu) {
+               ret = -ENOMEM;
+               goto out_free_virtual;
+       }
+
+       /* allocate pages for the buffer and acquire the according
+        * dma addresses */
+       for (i = 0; i < count; i++) {
+               dma_addr_t dma_data_addr;
+
+               fb->desc_table.virtual[i] =
+                       get_zeroed_page(GFP_KERNEL | GFP_DMA);
+               if (!fb->desc_table.virtual[i]) {
+                       ret = -ENOBUFS;
+                       break;
+               }
+
+               dma_data_addr =
+                       dma_map_single(NULL,
+                                      (void *)fb->desc_table.virtual[i],
+                                      PAGE_SIZE, DMA_FROM_DEVICE);
+
+               for (j = 0; j < VINO_PAGE_RATIO; j++) {
+                       fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
+                               dma_data_addr + VINO_PAGE_SIZE * j;
+               }
+
+               mem_map_reserve(virt_to_page(fb->desc_table.virtual[i]));
+       }
+
+       /* page_count needs to be set anyway, because the descriptor table has
+        * been allocated according to this number */
+       fb->desc_table.page_count = count;
+
+       if (ret) {
+               /* the descriptor with index i doesn't contain
+                * a valid address yet */
+               vino_free_buffer_with_count(fb, i);
+               return ret;
+       }
+
+       //fb->size = size;
+       fb->size = count * PAGE_SIZE;
 
+       /* set the dma stop-bit for the last (count+1)th descriptor */
+       fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
        return 0;
+
+ out_free_virtual:
+       kfree(fb->desc_table.virtual);
+       return ret;
 }
+#endif
 
-static void vino_close(struct video_device *dev)
+static void vino_sync_buffer(struct vino_framebuffer *fb)
 {
-       struct vino_device *videv = (struct vino_device *)dev;
+       int i;
+
+       dprintk("vino_sync_buffer():\n");
+
+       for (i = 0; i < fb->desc_table.page_count; i++)
+               dma_sync_single(NULL,
+                               fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
+                               PAGE_SIZE, DMA_FROM_DEVICE);
 }
 
-static int vino_mmap(struct video_device *dev, const char *adr,
-                    unsigned long size)
+/* Framebuffer fifo functions (need to be locked externally) */
+
+static void vino_fifo_init(struct vino_framebuffer_fifo *f,
+                          unsigned int length)
 {
-       struct vino_device *videv = (struct vino_device *)dev;
+       f->length = 0;
+       f->used = 0;
+       f->head = 0;
+       f->tail = 0;
 
-       return -EINVAL;
+       if (length > VINO_FRAMEBUFFER_MAX_COUNT)
+               length = VINO_FRAMEBUFFER_MAX_COUNT;
+
+       f->length = length;
 }
 
-static int vino_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
+/* returns true/false */
+static int vino_fifo_has_id(struct vino_framebuffer_fifo *f, unsigned int id)
 {
-       struct vino_device *videv = (struct vino_device *)dev;
+       unsigned int i;
+       for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
+               if (f->data[i] == id)
+                       return 1;
+       }
 
-       return -EINVAL;
+       return 0;
 }
 
-static const struct video_device vino_device = {
-       .owner          = THIS_MODULE,
-       .type           = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE,
-       .hardware       = VID_HARDWARE_VINO,
-       .name           = "VINO",
-       .open           = vino_open,
-       .close          = vino_close,
-       .ioctl          = vino_ioctl,
-       .mmap           = vino_mmap,
-};
+/* returns true/false */
+static int vino_fifo_full(struct vino_framebuffer_fifo *f)
+{
+       return (f->used == f->length);
+}
 
-static int __init vino_init(void)
+static unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
 {
-       unsigned long rev;
-       int i, ret = 0;
+       return f->used;
+}
 
-       /* VINO is Indy specific beast */
-       if (ip22_is_fullhouse())
-               return -ENODEV;
+static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
+{
+       if (id >= f->length) {
+               return VINO_QUEUE_ERROR;
+       }
 
-       /*
-        * VINO is in the EISA address space, so the sysid register will tell
-        * us if the EISA_PRESENT pin on MC has been pulled low.
-        *
-        * If EISA_PRESENT is not set we definitely don't have a VINO equiped
-        * system.
-        */
-       if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
-               printk(KERN_ERR "VINO not found\n");
-               return -ENODEV;
+       if (vino_fifo_has_id(f, id)) {
+               return VINO_QUEUE_ERROR;
        }
 
-       vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
-       if (!vino)
-               return -EIO;
+       if (f->used < f->length) {
+               f->data[f->tail] = id;
+               f->tail = (f->tail + 1) % f->length;
+               f->used++;
+       } else {
+               return VINO_QUEUE_ERROR;
+       }
 
-       /* Okay, once we know that VINO is present we'll read its revision
-        * safe way. One never knows... */
-       if (get_dbe(rev, &(vino->rev_id))) {
-               printk(KERN_ERR "VINO: failed to read revision register\n");
-               ret = -ENODEV;
-               goto out_unmap;
+       return 0;
+}
+
+static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
+{
+       if (f->used > 0) {
+               *id = f->data[f->head];
+       } else {
+               return VINO_QUEUE_ERROR;
        }
-       if (VINO_ID_VALUE(rev) != VINO_CHIP_ID) {
-               printk(KERN_ERR "VINO is not VINO (Rev/ID: 0x%04lx)\n", rev);
-               ret = -ENODEV;
-               goto out_unmap;
+
+       return 0;
+}
+
+static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
+{
+       if (f->used > 0) {
+               *id = f->data[f->head];
+               f->head = (f->head + 1) % f->length;
+               f->used--;
+       } else {
+               return VINO_QUEUE_ERROR;
        }
-       printk(KERN_INFO "VINO Rev: 0x%02lx\n", VINO_REV_NUM(rev));
 
-       Vino = (struct vino_video *)
-               kmalloc(sizeof(struct vino_video), GFP_KERNEL);
-       if (!Vino) {
-               ret = -ENOMEM;
-               goto out_unmap;
+       return 0;
+}
+
+/* Framebuffer queue functions */
+
+/* execute with queue_lock locked */
+static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
+                                      unsigned int length)
+{
+       unsigned int i;
+
+       q->length = 0;
+       memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
+       memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
+       for (i = 0; i < length; i++) {
+               dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
+                       i);
+               vino_free_buffer(q->buffer[i]);
+               kfree(q->buffer[i]);
        }
 
-       Vino->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
-       if (!Vino->dummy_page) {
-               ret = -ENOMEM;
-               goto out_free_vino;
+       q->type = VINO_MEMORY_NONE;
+       q->magic = 0;
+}
+
+static void vino_queue_free(struct vino_framebuffer_queue *q)
+{
+       dprintk("vino_queue_free():\n");
+
+       if (q->magic != VINO_QUEUE_MAGIC)
+               return;
+       if (q->type != VINO_MEMORY_MMAP)
+               return;
+
+       down(&q->queue_sem);
+
+       vino_queue_free_with_count(q, q->length);
+
+       up(&q->queue_sem);
+}
+
+static int vino_queue_init(struct vino_framebuffer_queue *q,
+                          unsigned int *length)
+{
+       unsigned int i;
+       int ret = 0;
+
+       dprintk("vino_queue_init(): length = %d\n", *length);
+
+       if (q->magic == VINO_QUEUE_MAGIC) {
+               dprintk("vino_queue_init(): queue already initialized!\n");
+               return -EINVAL;
        }
-       for (i = 0; i < 4; i++)
-               Vino->dummy_buf[i] = PHYSADDR(Vino->dummy_page);
 
-       vino->control = 0;
-       /* prevent VINO from throwing spurious interrupts */
-       vino->a.next_4_desc = PHYSADDR(Vino->dummy_buf);
-       vino->b.next_4_desc = PHYSADDR(Vino->dummy_buf);
-       udelay(5);
-       vino->intr_status = 0;
-        /* set threshold level */
-        vino->a.fifo_thres = threshold_a;
-       vino->b.fifo_thres = threshold_b;
+       if (q->type != VINO_MEMORY_NONE) {
+               dprintk("vino_queue_init(): queue already initialized!\n");
+               return -EINVAL;
+       }
 
-       init_MUTEX(&Vino->input_lock);
+       if (*length < 1)
+               return -EINVAL;
 
-       if (request_irq(SGI_VINO_IRQ, vino_interrupt, 0, vinostr, NULL)) {
-               printk(KERN_ERR "VINO: irq%02d registration failed\n",
-                      SGI_VINO_IRQ);
-               ret = -EAGAIN;
-               goto out_free_page;
+       down(&q->queue_sem);
+
+       if (*length > VINO_FRAMEBUFFER_MAX_COUNT)
+               *length = VINO_FRAMEBUFFER_MAX_COUNT;
+
+       q->length = 0;
+
+       for (i = 0; i < *length; i++) {
+               dprintk("vino_queue_init(): allocating buffer %d\n", i);
+               q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
+                                      GFP_KERNEL);
+               if (!q->buffer[i]) {
+                       dprintk("vino_queue_init(): kmalloc() failed\n");
+                       ret = -ENOMEM;
+                       break;
+               }
+
+               ret = vino_allocate_buffer(q->buffer[i],
+                                          VINO_FRAMEBUFFER_SIZE);
+               if (ret) {
+                       kfree(q->buffer[i]);
+                       dprintk("vino_queue_init(): "
+                               "vino_allocate_buffer() failed\n");
+                       break;
+               }
+
+               q->buffer[i]->id = i;
+               if (i > 0) {
+                       q->buffer[i]->offset = q->buffer[i - 1]->offset +
+                               q->buffer[i - 1]->size;
+               } else {
+                       q->buffer[i]->offset = 0;
+               }
+
+               spin_lock_init(&q->buffer[i]->state_lock);
+
+               dprintk("vino_queue_init(): buffer = %d, offset = %d, "
+                       "size = %d\n", i, q->buffer[i]->offset,
+                       q->buffer[i]->size);
        }
 
-       ret = vino_i2c_add_bus();
        if (ret) {
-               printk(KERN_ERR "VINO: I2C bus registration failed\n");
-               goto out_free_irq;
+               vino_queue_free_with_count(q, i);
+               *length = 0;
+       } else {
+               q->length = *length;
+               vino_fifo_init(&q->in, q->length);
+               vino_fifo_init(&q->out, q->length);
+               q->type = VINO_MEMORY_MMAP;
+               q->magic = VINO_QUEUE_MAGIC;
        }
 
-       if (video_register_device(&Vino->chA.vdev, VFL_TYPE_GRABBER, -1) < 0) {
-               printk("%s, chnl %d: device registration failed.\n",
-                       Vino->chA.vdev.name, Vino->chA.chan);
-               ret = -EINVAL;
-               goto out_i2c_del_bus;
+       up(&q->queue_sem);
+
+       return ret;
+}
+
+static struct vino_framebuffer *vino_queue_add(struct
+                                              vino_framebuffer_queue *q,
+                                              unsigned int id)
+{
+       struct vino_framebuffer *ret = NULL;
+       unsigned int total;
+       unsigned long flags;
+
+       dprintk("vino_queue_add(): id = %d\n", id);
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
        }
-       if (video_register_device(&Vino->chB.vdev, VFL_TYPE_GRABBER, -1) < 0) {
-               printk("%s, chnl %d: device registration failed.\n",
-                       Vino->chB.vdev.name, Vino->chB.chan);
-               ret = -EINVAL;
-               goto out_unregister_vdev;
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       if (id >= q->length)
+               goto out;
+
+       /* not needed?: if (vino_fifo_full(&q->out)) {
+               goto out;
+               }*/
+       /* check that outgoing queue isn't already full
+        * (or that it won't become full) */
+       total = vino_fifo_get_used(&q->in) +
+               vino_fifo_get_used(&q->out);
+       if (total >= q->length)
+               goto out;
+
+       if (vino_fifo_enqueue(&q->in, id))
+               goto out;
+
+       ret = q->buffer[id];
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static struct vino_framebuffer *vino_queue_transfer(struct
+                                                   vino_framebuffer_queue *q)
+{
+       struct vino_framebuffer *ret = NULL;
+       struct vino_framebuffer *fb;
+       int id;
+       unsigned long flags;
+
+       dprintk("vino_queue_transfer():\n");
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
        }
 
-       return 0;
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
 
-out_unregister_vdev:
-       video_unregister_device(&Vino->chA.vdev);
-out_i2c_del_bus:
-       vino_i2c_del_bus();
-out_free_irq:
-       free_irq(SGI_VINO_IRQ, NULL);
-out_free_page:
-       free_page(Vino->dummy_page);
-out_free_vino:
-       kfree(Vino);
-out_unmap:
-       iounmap(vino);
+       // now this actually removes an entry from the incoming queue
+       if (vino_fifo_dequeue(&q->in, &id)) {
+               goto out;
+       }
+
+       dprintk("vino_queue_transfer(): id = %d\n", id);
+       fb = q->buffer[id];
+
+       // we have already checked that the outgoing queue is not full, but...
+       if (vino_fifo_enqueue(&q->out, id)) {
+               printk(KERN_ERR "vino_queue_transfer(): "
+                      "outgoing queue is full, this shouldn't happen!\n");
+               goto out;
+       }
+
+       ret = fb;
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
 
        return ret;
 }
 
-static void __exit vino_exit(void)
+/* returns true/false */
+static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
+                                       unsigned int id)
 {
-       video_unregister_device(&Vino->chA.vdev);
-       video_unregister_device(&Vino->chB.vdev);
-       vino_i2c_del_bus();
-       free_irq(SGI_VINO_IRQ, NULL);
-       free_page(Vino->dummy_page);
-       kfree(Vino);
-       iounmap(vino);
+       int ret = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       ret = vino_fifo_has_id(&q->in, id);
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
 }
 
-module_init(vino_init);
-module_exit(vino_exit);
+/* returns true/false */
+static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
+                                       unsigned int id)
+{
+       int ret = 0;
+       unsigned long flags;
 
-MODULE_DESCRIPTION("Video4Linux driver for SGI Indy VINO (IndyCam)");
-MODULE_LICENSE("GPL");
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       ret = vino_fifo_has_id(&q->out, id);
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
+                                  unsigned int *used)
+{
+       int ret = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return VINO_QUEUE_ERROR;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0) {
+               ret = VINO_QUEUE_ERROR;
+               goto out;
+       }
+
+       *used = vino_fifo_get_used(&q->in);
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
+                                  unsigned int *used)
+{
+       int ret = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return VINO_QUEUE_ERROR;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0) {
+               ret = VINO_QUEUE_ERROR;
+               goto out;
+       }
+
+       *used = vino_fifo_get_used(&q->out);
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static int vino_queue_get_total(struct vino_framebuffer_queue *q,
+                               unsigned int *total)
+{
+       int ret = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return VINO_QUEUE_ERROR;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0) {
+               ret = VINO_QUEUE_ERROR;
+               goto out;
+       }
+
+       *total = vino_fifo_get_used(&q->in) +
+               vino_fifo_get_used(&q->out);
+
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static struct vino_framebuffer *vino_queue_peek(struct
+                                               vino_framebuffer_queue *q,
+                                               unsigned int *id)
+{
+       struct vino_framebuffer *ret = NULL;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       if (vino_fifo_peek(&q->in, id)) {
+               goto out;
+       }
+
+       ret = q->buffer[*id];
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static struct vino_framebuffer *vino_queue_remove(struct
+                                                 vino_framebuffer_queue *q,
+                                                 unsigned int *id)
+{
+       struct vino_framebuffer *ret = NULL;
+       unsigned long flags;
+       dprintk("vino_queue_remove():\n");
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       if (vino_fifo_dequeue(&q->out, id)) {
+               goto out;
+       }
+
+       dprintk("vino_queue_remove(): id = %d\n", *id);
+       ret = q->buffer[*id];
+out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static struct
+vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
+                                       unsigned int id)
+{
+       struct vino_framebuffer *ret = NULL;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+
+       if (q->length == 0)
+               goto out;
+
+       if (id >= q->length)
+               goto out;
+
+       ret = q->buffer[id];
+ out:
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
+{
+       unsigned int length = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return length;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+       length = q->length;
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return length;
+}
+
+static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
+{
+       unsigned int i;
+       int ret = 0;
+       unsigned long flags;
+
+       if (q->magic != VINO_QUEUE_MAGIC) {
+               return ret;
+       }
+
+       spin_lock_irqsave(&q->queue_lock, flags);
+       for (i = 0; i < q->length; i++) {
+               if (q->buffer[i]->map_count > 0) {
+                       ret = 1;
+                       break;
+               }
+       }
+       spin_unlock_irqrestore(&q->queue_lock, flags);
+
+       return ret;
+}
+
+/* VINO functions */
+
+/* execute with input_lock locked */
+static void vino_update_line_size(struct vino_channel_settings *vcs)
+{
+       unsigned int w = vcs->clipping.right - vcs->clipping.left;
+       unsigned int d = vcs->decimation;
+       unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
+        unsigned int lsize;
+
+       dprintk("update_line_size(): before: w = %d, d = %d, "
+               "line_size = %d\n", w, d, vcs->line_size);
+        /* line size must be multiple of 8 bytes */
+       lsize = (bpp * (w / d)) & ~7;
+       w = (lsize / bpp) * d;
+
+       vcs->clipping.right = vcs->clipping.left + w;
+       vcs->line_size = lsize;
+       dprintk("update_line_size(): after: w = %d, d = %d, "
+               "line_size = %d\n", w, d, vcs->line_size);
+}
+
+/* execute with input_lock locked */
+static void vino_set_clipping(struct vino_channel_settings *vcs,
+                             unsigned int x, unsigned int y,
+                             unsigned int w, unsigned int h)
+{
+       unsigned int maxwidth, maxheight;
+       unsigned int d;
+
+       maxwidth = vino_data_norms[vcs->data_norm].width;
+       maxheight = vino_data_norms[vcs->data_norm].height;
+       d = vcs->decimation;
+
+       y &= ~1;        /* odd/even fields */
+
+       if (x > maxwidth) {
+               x = 0;
+       }
+       if (y > maxheight) {
+               y = 0;
+       }
+
+       if (((w / d) < VINO_MIN_WIDTH)
+           || ((h / d) < VINO_MIN_HEIGHT)) {
+               w = VINO_MIN_WIDTH * d;
+               h = VINO_MIN_HEIGHT * d;
+       }
+
+       if ((x + w) > maxwidth) {
+               w = maxwidth - x;
+               if ((w / d) < VINO_MIN_WIDTH)
+                       x = maxwidth - VINO_MIN_WIDTH * d;
+       }
+       if ((y + h) > maxheight) {
+               h = maxheight - y;
+               if ((h / d) < VINO_MIN_HEIGHT)
+                       y = maxheight - VINO_MIN_HEIGHT * d;
+       }
+
+       vcs->clipping.left = x;
+       vcs->clipping.top = y;
+       vcs->clipping.right = x + w;
+       vcs->clipping.bottom = y + h;
+
+       vino_update_line_size(vcs);
+
+       dprintk("clipping %d, %d, %d, %d / %d - %d\n",
+               vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
+               vcs->clipping.bottom, vcs->decimation, vcs->line_size);
+}
+
+/* execute with input_lock locked */
+static void vino_set_default_clipping(struct vino_channel_settings *vcs)
+{
+       vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
+                         vino_data_norms[vcs->data_norm].height);
+}
+
+/* execute with input_lock locked */
+static void vino_set_scaling(struct vino_channel_settings *vcs,
+                            unsigned int w, unsigned int h)
+{
+       unsigned int x, y, curw, curh, d;
+
+       x = vcs->clipping.left;
+       y = vcs->clipping.top;
+       curw = vcs->clipping.right - vcs->clipping.left;
+       curh = vcs->clipping.bottom - vcs->clipping.top;
+
+       d = max(curw / w, curh / h);
+
+       dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
+               w, h, curw, curh, d);
+
+       if (d < 1) {
+               d = 1;
+       }
+       if (d > 8) {
+               d = 8;
+       }
+
+       vcs->decimation = d;
+       vino_set_clipping(vcs, x, y, w * d, h * d);
+
+       dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
+               vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
+               vcs->decimation, vcs->line_size);
+}
+
+/* execute with input_lock locked */
+static void vino_reset_scaling(struct vino_channel_settings *vcs)
+{
+       vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
+                        vcs->clipping.bottom - vcs->clipping.top);
+}
+
+/* execute with input_lock locked */
+static void vino_set_framerate(struct vino_channel_settings *vcs,
+                              unsigned int fps)
+{
+       unsigned int mask;
+
+       switch (vcs->data_norm) {
+       case VINO_DATA_NORM_NTSC:
+       case VINO_DATA_NORM_D1:
+               fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
+
+               if (fps < vino_data_norms[vcs->data_norm].fps_min)
+                       fps = vino_data_norms[vcs->data_norm].fps_min;
+               if (fps > vino_data_norms[vcs->data_norm].fps_max)
+                       fps = vino_data_norms[vcs->data_norm].fps_max;
+
+               switch (fps) {
+               case 6:
+                       mask = 0x003;
+                       break;
+               case 12:
+                       mask = 0x0c3;
+                       break;
+               case 18:
+                       mask = 0x333;
+                       break;
+               case 24:
+                       mask = 0x3ff;
+                       break;
+               case 30:
+                       mask = 0xfff;
+                       break;
+               default:
+                       mask = VINO_FRAMERT_FULL;
+               }
+               vcs->framert_reg = VINO_FRAMERT_RT(mask);
+               break;
+       case VINO_DATA_NORM_PAL:
+       case VINO_DATA_NORM_SECAM:
+               fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
+
+               if (fps < vino_data_norms[vcs->data_norm].fps_min)
+                       fps = vino_data_norms[vcs->data_norm].fps_min;
+               if (fps > vino_data_norms[vcs->data_norm].fps_max)
+                       fps = vino_data_norms[vcs->data_norm].fps_max;
+
+               switch (fps) {
+               case 5:
+                       mask = 0x003;
+                       break;
+               case 10:
+                       mask = 0x0c3;
+                       break;
+               case 15:
+                       mask = 0x333;
+                       break;
+               case 20:
+                       mask = 0x0ff;
+                       break;
+               case 25:
+                       mask = 0x3ff;
+                       break;
+               default:
+                       mask = VINO_FRAMERT_FULL;
+               }
+               vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
+               break;
+       }
+
+       vcs->fps = fps;
+}
+
+/* execute with input_lock locked */
+static void vino_set_default_framerate(struct vino_channel_settings *vcs)
+{
+       vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
+}
+
+/*
+ * Prepare VINO for DMA transfer...
+ * (execute only with vino_lock and input_lock locked)
+ */
+static int vino_dma_setup(struct vino_channel_settings *vcs,
+                         struct vino_framebuffer *fb)
+{
+       u32 ctrl, intr;
+       struct sgi_vino_channel *ch;
+       const struct vino_data_norm *norm;
+
+       dprintk("vino_dma_setup():\n");
+
+       vcs->field = 0;
+       fb->frame_counter = 0;
+
+       ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
+       norm = &vino_data_norms[vcs->data_norm];
+
+       ch->page_index = 0;
+       ch->line_count = 0;
+
+       /* VINO line size register is set 8 bytes less than actual */
+       ch->line_size = vcs->line_size - 8;
+
+       /* let VINO know where to transfer data */
+       ch->start_desc_tbl = fb->desc_table.dma;
+       ch->next_4_desc = fb->desc_table.dma;
+
+       /* give vino time to fetch the first four descriptors, 5 usec
+        * should be more than enough time */
+       udelay(VINO_DESC_FETCH_DELAY);
+
+       /* set the alpha register */
+       ch->alpha = vcs->alpha;
+
+       /* set clipping registers */
+       ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
+               VINO_CLIP_EVEN(norm->even.top +
+                              vcs->clipping.top / 2) |
+               VINO_CLIP_X(vcs->clipping.left);
+       ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
+                                    vcs->clipping.bottom / 2 - 1) |
+               VINO_CLIP_EVEN(norm->even.top +
+                              vcs->clipping.bottom / 2 - 1) |
+               VINO_CLIP_X(vcs->clipping.right);
+       /* FIXME: end-of-field bug workaround
+                      VINO_CLIP_X(VINO_PAL_WIDTH);
+        */
+
+       /* set the size of actual content in the buffer (DECIMATION !) */
+       fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
+                        vcs->decimation) *
+               ((vcs->clipping.bottom - vcs->clipping.top) /
+                vcs->decimation) *
+               vino_data_formats[vcs->data_format].bpp;
+
+       ch->frame_rate = vcs->framert_reg;
+
+       ctrl = vino->control;
+       intr = vino->intr_status;
+
+       if (vcs->channel == VINO_CHANNEL_A) {
+               /* All interrupt conditions for this channel was cleared
+                * so clear the interrupt status register and enable
+                * interrupts */
+               intr &= ~VINO_INTSTAT_A;
+               ctrl |= VINO_CTRL_A_INT;
+
+               /* enable synchronization */
+               ctrl |= VINO_CTRL_A_SYNC_ENBL;
+
+               /* enable frame assembly */
+               ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
+
+               /* set decimation used */
+               if (vcs->decimation < 2)
+                       ctrl &= ~VINO_CTRL_A_DEC_ENBL;
+               else {
+                       ctrl |= VINO_CTRL_A_DEC_ENBL;
+                       ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
+                       ctrl |= (vcs->decimation - 1) <<
+                               VINO_CTRL_A_DEC_SCALE_SHIFT;
+               }
+
+               /* select input interface */
+               if (vcs->input == VINO_INPUT_D1)
+                       ctrl |= VINO_CTRL_A_SELECT;
+               else
+                       ctrl &= ~VINO_CTRL_A_SELECT;
+
+               /* palette */
+               ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
+                         VINO_CTRL_A_DITHER);
+       } else {
+               intr &= ~VINO_INTSTAT_B;
+               ctrl |= VINO_CTRL_B_INT;
+
+               ctrl |= VINO_CTRL_B_SYNC_ENBL;
+               ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
+
+               if (vcs->decimation < 2)
+                       ctrl &= ~VINO_CTRL_B_DEC_ENBL;
+               else {
+                       ctrl |= VINO_CTRL_B_DEC_ENBL;
+                       ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
+                       ctrl |= (vcs->decimation - 1) <<
+                               VINO_CTRL_B_DEC_SCALE_SHIFT;
+
+               }
+               if (vcs->input == VINO_INPUT_D1)
+                       ctrl |= VINO_CTRL_B_SELECT;
+               else
+                       ctrl &= ~VINO_CTRL_B_SELECT;
+
+               ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
+                         VINO_CTRL_B_DITHER);
+       }
+
+       /* set palette */
+       fb->data_format = vcs->data_format;
+
+       switch (vcs->data_format) {
+               case VINO_DATA_FMT_GREY:
+                       ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
+                               VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
+                       break;
+               case VINO_DATA_FMT_RGB32:
+                       ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
+                               VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
+                       break;
+               case VINO_DATA_FMT_YUV:
+                       /* nothing needs to be done */
+                       break;
+               case VINO_DATA_FMT_RGB332:
+                       ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
+                               VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
+                               VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
+                       break;
+       }
+
+       vino->intr_status = intr;
+       vino->control = ctrl;
+
+       return 0;
+}
+
+/* (execute only with vino_lock locked) */
+static void vino_dma_start(struct vino_channel_settings *vcs)
+{
+       u32 ctrl = vino->control;
+
+       dprintk("vino_dma_start():\n");
+       ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
+               VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
+       vino->control = ctrl;
+}
+
+/* (execute only with vino_lock locked) */
+static void vino_dma_stop(struct vino_channel_settings *vcs)
+{
+       u32 ctrl = vino->control;
+
+       ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
+               ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
+       vino->control = ctrl;
+       dprintk("vino_dma_stop():\n");
+}
+
+/*
+ * Load dummy page to descriptor registers. This prevents generating of
+ * spurious interrupts. (execute only with vino_lock locked)
+ */
+static void vino_clear_interrupt(struct vino_channel_settings *vcs)
+{
+       struct sgi_vino_channel *ch;
+
+       ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
+
+       ch->page_index = 0;
+       ch->line_count = 0;
+
+       ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
+       ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
+
+       udelay(VINO_DESC_FETCH_DELAY);
+       dprintk("channel %c clear interrupt condition\n",
+              (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
+}
+
+static int vino_capture(struct vino_channel_settings *vcs,
+                       struct vino_framebuffer *fb)
+{
+       int err = 0;
+       unsigned long flags, flags2;
+
+       spin_lock_irqsave(&fb->state_lock, flags);
+
+       if (fb->state == VINO_FRAMEBUFFER_IN_USE)
+               err = -EBUSY;
+       fb->state = VINO_FRAMEBUFFER_IN_USE;
+
+       spin_unlock_irqrestore(&fb->state_lock, flags);
+
+       if (err)
+               return err;
+
+       spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
+       spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
+
+       vino_dma_setup(vcs, fb);
+       vino_dma_start(vcs);
+
+       spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
+       spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
+
+       return err;
+}
+
+static
+struct vino_framebuffer *vino_capture_enqueue(struct
+                                             vino_channel_settings *vcs,
+                                             unsigned int index)
+{
+       struct vino_framebuffer *fb;
+       unsigned long flags;
+
+       dprintk("vino_capture_enqueue():\n");
+
+       spin_lock_irqsave(&vcs->capture_lock, flags);
+
+       fb = vino_queue_add(&vcs->fb_queue, index);
+       if (fb == NULL) {
+               dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
+                       "queue full?\n");
+               goto out;
+       }
+out:
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+
+       return fb;
+}
+
+static int vino_capture_next(struct vino_channel_settings *vcs, int start)
+{
+       struct vino_framebuffer *fb;
+       unsigned int incoming, id;
+       int err = 0;
+       unsigned long flags, flags2;
+
+       dprintk("vino_capture_next():\n");
+
+       spin_lock_irqsave(&vcs->capture_lock, flags);
+
+       if (start) {
+               /* start capture only if capture isn't in progress already */
+               if (vcs->capturing) {
+                       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+                       return 0;
+               }
+
+       } else {
+               /* capture next frame:
+                * stop capture if capturing is not set */
+               if (!vcs->capturing) {
+                       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+                       return 0;
+               }
+       }
+
+       err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
+       if (err) {
+               dprintk("vino_capture_next(): vino_queue_get_incoming() "
+                       "failed\n");
+               err = -EINVAL;
+               goto out;
+       }
+       if (incoming == 0) {
+               dprintk("vino_capture_next(): no buffers available\n");
+               goto out;
+       }
+
+       fb = vino_queue_peek(&vcs->fb_queue, &id);
+       if (fb == NULL) {
+               dprintk("vino_capture_next(): vino_queue_peek() failed\n");
+               err = -EINVAL;
+               goto out;
+       }
+
+       spin_lock_irqsave(&fb->state_lock, flags2);
+       fb->state = VINO_FRAMEBUFFER_UNUSED;
+       spin_unlock_irqrestore(&fb->state_lock, flags2);
+
+       if (start) {
+               vcs->capturing = 1;
+       }
+
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+
+       err = vino_capture(vcs, fb);
+
+       return err;
+
+out:
+       vcs->capturing = 0;
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+
+       return err;
+}
+
+static int vino_is_capturing(struct vino_channel_settings *vcs)
+{
+       int ret;
+       unsigned long flags;
+
+       spin_lock_irqsave(&vcs->capture_lock, flags);
+
+       ret = vcs->capturing;
+
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+
+       return ret;
+}
+
+/* waits until a frame is captured */
+static int vino_wait_for_frame(struct vino_channel_settings *vcs)
+{
+       wait_queue_t wait;
+       int err = 0;
+
+       dprintk("vino_wait_for_frame():\n");
+
+       init_waitqueue_entry(&wait, current);
+       /* add ourselves into wait queue */
+       add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
+       /* and set current state */
+       set_current_state(TASK_INTERRUPTIBLE);
+
+       /* to ensure that schedule_timeout will return immediately
+        * if VINO interrupt was triggred meanwhile */
+       schedule_timeout(HZ / 10);
+
+       if (signal_pending(current))
+               err = -EINTR;
+
+       remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
+
+       dprintk("vino_wait_for_frame(): waiting for frame %s\n",
+               err ? "failed" : "ok");
+
+       return err;
+}
+
+/* the function assumes that PAGE_SIZE % 4 == 0 */
+static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
+       unsigned char *pageptr;
+       unsigned int page, i;
+       unsigned char a;
+
+       for (page = 0; page < fb->desc_table.page_count; page++) {
+               pageptr = (unsigned char *)fb->desc_table.virtual[page];
+
+               for (i = 0; i < PAGE_SIZE; i += 4) {
+                       a = pageptr[0];
+                       pageptr[0] = pageptr[3];
+                       pageptr[1] = pageptr[2];
+                       pageptr[2] = pageptr[1];
+                       pageptr[3] = a;
+                       pageptr += 4;
+               }
+       }
+}
+
+/* checks if the buffer is in correct state and syncs data */
+static int vino_check_buffer(struct vino_channel_settings *vcs,
+                            struct vino_framebuffer *fb)
+{
+       int err = 0;
+       unsigned long flags;
+
+       dprintk("vino_check_buffer():\n");
+
+       spin_lock_irqsave(&fb->state_lock, flags);
+       switch (fb->state) {
+       case VINO_FRAMEBUFFER_IN_USE:
+               err = -EIO;
+               break;
+       case VINO_FRAMEBUFFER_READY:
+               vino_sync_buffer(fb);
+               fb->state = VINO_FRAMEBUFFER_UNUSED;
+               break;
+       default:
+               err = -EINVAL;
+       }
+       spin_unlock_irqrestore(&fb->state_lock, flags);
+
+       if (!err) {
+               if (vino_pixel_conversion
+                   && (fb->data_format == VINO_DATA_FMT_RGB32)) {
+                       vino_convert_to_rgba(fb);
+               }
+       } else if (err && (err != -EINVAL)) {
+               dprintk("vino_check_buffer(): buffer not ready\n");
+
+               spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
+               vino_dma_stop(vcs);
+               vino_clear_interrupt(vcs);
+               spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
+       }
+
+       return err;
+}
+
+/* forcefully terminates capture */
+static void vino_capture_stop(struct vino_channel_settings *vcs)
+{
+       unsigned int incoming = 0, outgoing = 0, id;
+       unsigned long flags, flags2;
+
+       dprintk("vino_capture_stop():\n");
+
+       spin_lock_irqsave(&vcs->capture_lock, flags);
+       /* unset capturing to stop queue processing */
+       vcs->capturing = 0;
+
+       spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
+
+       vino_dma_stop(vcs);
+       vino_clear_interrupt(vcs);
+
+       spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
+
+       /* remove all items from the queue */
+       if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
+               dprintk("vino_capture_stop(): "
+                       "vino_queue_get_incoming() failed\n");
+               goto out;
+       }
+       while (incoming > 0) {
+               vino_queue_transfer(&vcs->fb_queue);
+
+               if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
+                       dprintk("vino_capture_stop(): "
+                               "vino_queue_get_incoming() failed\n");
+                       goto out;
+               }
+       }
+
+       if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
+               dprintk("vino_capture_stop(): "
+                       "vino_queue_get_outgoing() failed\n");
+               goto out;
+       }
+       while (outgoing > 0) {
+               vino_queue_remove(&vcs->fb_queue, &id);
+
+               if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
+                       dprintk("vino_capture_stop(): "
+                               "vino_queue_get_outgoing() failed\n");
+                       goto out;
+               }
+       }
+
+out:
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+}
+
+static int vino_capture_failed(struct vino_channel_settings *vcs)
+{
+       struct vino_framebuffer *fb;
+       unsigned long flags;
+       unsigned int i;
+       int ret;
+
+       dprintk("vino_capture_failed():\n");
+
+       spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
+
+       vino_dma_stop(vcs);
+       vino_clear_interrupt(vcs);
+
+       spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
+
+       ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
+       if (ret == VINO_QUEUE_ERROR) {
+               dprintk("vino_queue_get_incoming() failed\n");
+               return -EINVAL;
+       }
+       if (i == 0) {
+               /* no buffers to process */
+               return 0;
+       }
+
+       fb = vino_queue_peek(&vcs->fb_queue, &i);
+       if (fb == NULL) {
+               dprintk("vino_queue_peek() failed\n");
+               return -EINVAL;
+       }
+
+       spin_lock_irqsave(&fb->state_lock, flags);
+       if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
+               fb->state = VINO_FRAMEBUFFER_UNUSED;
+               vino_queue_transfer(&vcs->fb_queue);
+               vino_queue_remove(&vcs->fb_queue, &i);
+               /* we should actually discard the newest frame,
+                * but who cares ... */
+       }
+       spin_unlock_irqrestore(&fb->state_lock, flags);
+
+       return 0;
+}
+
+static void vino_frame_done(struct vino_channel_settings *vcs,
+                           unsigned int fc)
+{
+       struct vino_framebuffer *fb;
+       unsigned long flags;
+
+       spin_lock_irqsave(&vcs->capture_lock, flags);
+       fb = vino_queue_transfer(&vcs->fb_queue);
+       if (!fb) {
+               spin_unlock_irqrestore(&vcs->capture_lock, flags);
+               dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
+               return;
+       }
+       spin_unlock_irqrestore(&vcs->capture_lock, flags);
+
+       fb->frame_counter = fc;
+       do_gettimeofday(&fb->timestamp);
+
+       spin_lock_irqsave(&fb->state_lock, flags);
+       if (fb->state == VINO_FRAMEBUFFER_IN_USE)
+               fb->state = VINO_FRAMEBUFFER_READY;
+       spin_unlock_irqrestore(&fb->state_lock, flags);
+
+       wake_up(&vcs->fb_queue.frame_wait_queue);
+
+       vino_capture_next(vcs, 0);
+}
+
+static irqreturn_t vino_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+       u32 intr;
+       unsigned int fc_a, fc_b;
+       int done_a = 0;
+       int done_b = 0;
+
+       spin_lock(&vino_drvdata->vino_lock);
+
+       intr = vino->intr_status;
+       fc_a = vino->a.field_counter / 2;
+       fc_b = vino->b.field_counter / 2;
+
+       // TODO: handle error-interrupts in some special way ?
+
+       if (intr & VINO_INTSTAT_A) {
+               if (intr & VINO_INTSTAT_A_EOF) {
+                       vino_drvdata->a.field++;
+                       if (vino_drvdata->a.field > 1) {
+                               vino_dma_stop(&vino_drvdata->a);
+                               vino_clear_interrupt(&vino_drvdata->a);
+                               vino_drvdata->a.field = 0;
+                               done_a = 1;
+                       }
+                       dprintk("intr: channel A end-of-field interrupt: "
+                               "%04x\n", intr);
+               } else {
+                       vino_dma_stop(&vino_drvdata->a);
+                       vino_clear_interrupt(&vino_drvdata->a);
+                       done_a = 1;
+                       dprintk("channel A error interrupt: %04x\n", intr);
+               }
+       }
+       if (intr & VINO_INTSTAT_B) {
+               if (intr & VINO_INTSTAT_B_EOF) {
+                       vino_drvdata->b.field++;
+                       if (vino_drvdata->b.field > 1) {
+                               vino_dma_stop(&vino_drvdata->b);
+                               vino_clear_interrupt(&vino_drvdata->b);
+                               vino_drvdata->b.field = 0;
+                               done_b = 1;
+                       }
+                       dprintk("intr: channel B end-of-field interrupt: "
+                               "%04x\n", intr);
+               } else {
+                       vino_dma_stop(&vino_drvdata->b);
+                       vino_clear_interrupt(&vino_drvdata->b);
+                       done_b = 1;
+                       dprintk("channel B error interrupt: %04x\n", intr);
+               }
+       }
+
+       /* always remember to clear interrupt status */
+       vino->intr_status = ~intr;
+
+       spin_unlock(&vino_drvdata->vino_lock);
+
+       if (done_a) {
+               vino_frame_done(&vino_drvdata->a, fc_a);
+               dprintk("channel A frame done, interrupt: %d\n", intr);
+       }
+       if (done_b) {
+               vino_frame_done(&vino_drvdata->b, fc_b);
+               dprintk("channel B frame done, interrupt: %d\n", intr);
+       }
+
+       return IRQ_HANDLED;
+}
+
+/* VINO video input management */
+
+static int vino_get_saa7191_input(int input)
+{
+       switch (input) {
+       case VINO_INPUT_COMPOSITE:
+               return SAA7191_INPUT_COMPOSITE;
+       case VINO_INPUT_SVIDEO:
+               return SAA7191_INPUT_SVIDEO;
+       default:
+               printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
+                      "invalid input!\n");
+               return -1;
+       }
+}
+
+static int vino_get_saa7191_norm(int norm)
+{
+       switch (norm) {
+       case VINO_DATA_NORM_AUTO:
+               return SAA7191_NORM_AUTO;
+       case VINO_DATA_NORM_PAL:
+               return SAA7191_NORM_PAL;
+       case VINO_DATA_NORM_NTSC:
+               return SAA7191_NORM_NTSC;
+       case VINO_DATA_NORM_SECAM:
+               return SAA7191_NORM_SECAM;
+       default:
+               printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
+                      "invalid norm!\n");
+               return -1;
+       }
+}
+
+/* execute with input_lock locked */
+static int vino_is_input_owner(struct vino_channel_settings *vcs)
+{
+       switch(vcs->input) {
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               return (vino_drvdata->decoder.owner == vcs->channel);
+       case VINO_INPUT_D1:
+               return (vino_drvdata->camera.owner == vcs->channel);
+       default:
+               return 0;
+       }
+}
+
+static int vino_acquire_input(struct vino_channel_settings *vcs)
+{
+       int ret = 0;
+
+       dprintk("vino_acquire_input():\n");
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       /* First try D1 and then SAA7191 */
+       if (vino_drvdata->camera.driver
+           && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
+               if (i2c_use_client(vino_drvdata->camera.driver)) {
+                       ret = -ENODEV;
+                       goto out;
+               }
+
+               vino_drvdata->camera.owner = vcs->channel;
+               vcs->input = VINO_INPUT_D1;
+               vcs->data_norm = VINO_DATA_NORM_D1;
+       } else if (vino_drvdata->decoder.driver
+                  && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
+               int saa7191_input;
+               int saa7191_norm;
+
+               if (i2c_use_client(vino_drvdata->decoder.driver)) {
+                       ret = -ENODEV;
+                       goto out;
+               }
+
+               vino_drvdata->decoder.owner = vcs->channel;
+               vcs->input = VINO_INPUT_COMPOSITE;
+               vcs->data_norm = VINO_DATA_NORM_PAL;
+
+               saa7191_input = vino_get_saa7191_input(vcs->input);
+               i2c_decoder_command(DECODER_SET_INPUT, &saa7191_input);
+
+               saa7191_norm = vino_get_saa7191_norm(vcs->data_norm);
+               i2c_decoder_command(DECODER_SAA7191_SET_NORM, &saa7191_norm);
+       } else {
+               vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
+                       vino_drvdata->b.input : vino_drvdata->a.input;
+               vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
+                       vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
+       }
+
+       if (vcs->input == VINO_INPUT_NONE) {
+               ret = -ENODEV;
+               goto out;
+       }
+
+       if (vino_is_input_owner(vcs)) {
+               vino_set_default_clipping(vcs);
+               vino_set_default_framerate(vcs);
+       }
+
+       dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
+
+out:
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return ret;
+}
+
+static int vino_set_input(struct vino_channel_settings *vcs, int input)
+{
+       struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
+               &vino_drvdata->b : &vino_drvdata->a;
+       int ret = 0;
+
+       dprintk("vino_set_input():\n");
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       if (vcs->input == input)
+               goto out;
+
+       switch(input) {
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               if (!vino_drvdata->decoder.driver) {
+                       ret = -EINVAL;
+                       goto out;
+               }
+
+               if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
+                       if (i2c_use_client(vino_drvdata->decoder.driver)) {
+                               ret = -ENODEV;
+                               goto out;
+                       }
+                       vino_drvdata->decoder.owner = vcs->channel;
+               }
+
+               if (vino_drvdata->decoder.owner == vcs->channel) {
+                       int saa7191_input;
+                       int saa7191_norm;
+
+                       vcs->input = input;
+                       vcs->data_norm = VINO_DATA_NORM_PAL;
+
+                       saa7191_input = vino_get_saa7191_input(vcs->input);
+                       i2c_decoder_command(DECODER_SET_INPUT, &saa7191_input);
+                       saa7191_norm = vino_get_saa7191_norm(vcs->data_norm);
+                       i2c_decoder_command(DECODER_SAA7191_SET_NORM,
+                                           &saa7191_norm);
+               } else {
+                       if (vcs2->input != input) {
+                               ret = -EBUSY;
+                               goto out;
+                       }
+
+                       vcs->input = input;
+                       vcs->data_norm = vcs2->data_norm;
+               }
+
+               if (vino_drvdata->camera.owner == vcs->channel) {
+                       /* Transfer the ownership or release the input */
+                       if (vcs2->input == VINO_INPUT_D1) {
+                               vino_drvdata->camera.owner = vcs2->channel;
+                       } else {
+                               i2c_release_client(vino_drvdata->
+                                                  camera.driver);
+                               vino_drvdata->camera.owner = VINO_NO_CHANNEL;
+                       }
+               }
+               break;
+       case VINO_INPUT_D1:
+               if (!vino_drvdata->camera.driver) {
+                       ret = -EINVAL;
+                       goto out;
+               }
+
+               if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
+                       if (i2c_use_client(vino_drvdata->camera.driver)) {
+                               ret = -ENODEV;
+                               goto out;
+                       }
+                       vino_drvdata->camera.owner = vcs->channel;
+               }
+
+               if (vino_drvdata->decoder.owner == vcs->channel) {
+                       /* Transfer the ownership or release the input */
+                       if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
+                                (vcs2->input == VINO_INPUT_SVIDEO)) {
+                               vino_drvdata->decoder.owner = vcs2->channel;
+                       } else {
+                               i2c_release_client(vino_drvdata->
+                                                  decoder.driver);
+                               vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
+                       }
+               }
+
+               vcs->input = input;
+               vcs->data_norm = VINO_DATA_NORM_D1;
+               break;
+       default:
+               ret = -EINVAL;
+               goto out;
+       }
+
+       vino_set_default_clipping(vcs);
+       vino_set_default_framerate(vcs);
+
+       dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
+
+out:
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return ret;
+}
+
+static void vino_release_input(struct vino_channel_settings *vcs)
+{
+       struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
+               &vino_drvdata->b : &vino_drvdata->a;
+
+       dprintk("vino_release_input():\n");
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       /* Release ownership of the channel
+        * and if the other channel takes input from
+        * the same source, transfer the ownership */
+       if (vino_drvdata->camera.owner == vcs->channel) {
+               if (vcs2->input == VINO_INPUT_D1) {
+                       vino_drvdata->camera.owner = vcs2->channel;
+               } else {
+                       i2c_release_client(vino_drvdata->camera.driver);
+                       vino_drvdata->camera.owner = VINO_NO_CHANNEL;
+               }
+       } else if (vino_drvdata->decoder.owner == vcs->channel) {
+               if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
+                        (vcs2->input == VINO_INPUT_SVIDEO)) {
+                       vino_drvdata->decoder.owner = vcs2->channel;
+               } else {
+                       i2c_release_client(vino_drvdata->decoder.driver);
+                       vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
+               }
+       }
+       vcs->input = VINO_INPUT_NONE;
+
+       spin_unlock(&vino_drvdata->input_lock);
+}
+
+/* execute with input_lock locked */
+static int vino_set_data_norm(struct vino_channel_settings *vcs,
+                             unsigned int data_norm)
+{
+       int saa7191_norm;
+
+       switch (vcs->input) {
+       case VINO_INPUT_D1:
+               /* only one "norm" supported */
+               if (data_norm != VINO_DATA_NORM_D1)
+                       return -EINVAL;
+               break;
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+
+               saa7191_norm = vino_get_saa7191_norm(data_norm);
+
+               i2c_decoder_command(DECODER_SAA7191_SET_NORM, &saa7191_norm);
+               vcs->data_norm = data_norm;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/* V4L2 helper functions */
+
+static int vino_find_data_format(__u32 pixelformat)
+{
+       int i;
+
+       for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
+               if (vino_data_formats[i].pixelformat == pixelformat)
+                       return i;
+       }
+
+       return VINO_DATA_FMT_NONE;
+}
+
+static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
+{
+       int data_norm = VINO_DATA_NORM_NONE;
+
+       spin_lock(&vino_drvdata->input_lock);
+       switch(vcs->input) {
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               if (index == 0) {
+                       data_norm = VINO_DATA_NORM_PAL;
+               } else if (index == 1) {
+                       data_norm = VINO_DATA_NORM_NTSC;
+               } else if (index == 2) {
+                       data_norm = VINO_DATA_NORM_SECAM;
+               }
+               break;
+       case VINO_INPUT_D1:
+               if (index == 0) {
+                       data_norm = VINO_DATA_NORM_D1;
+               }
+               break;
+       }
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return data_norm;
+}
+
+static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
+{
+       int input = VINO_INPUT_NONE;
+
+       spin_lock(&vino_drvdata->input_lock);
+       if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
+               switch (index) {
+               case 0:
+                       input = VINO_INPUT_COMPOSITE;
+                       break;
+               case 1:
+                       input = VINO_INPUT_SVIDEO;
+                       break;
+               case 2:
+                       input = VINO_INPUT_D1;
+                       break;
+               }
+       } else if (vino_drvdata->decoder.driver) {
+               switch (index) {
+               case 0:
+                       input = VINO_INPUT_COMPOSITE;
+                       break;
+               case 1:
+                       input = VINO_INPUT_SVIDEO;
+                       break;
+               }
+       } else if (vino_drvdata->camera.driver) {
+               switch (index) {
+               case 0:
+                       input = VINO_INPUT_D1;
+                       break;
+               }
+       }
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return input;
+}
+
+/* execute with input_lock locked */
+static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
+{
+       __u32 index = 0;
+       // FIXME: detect when no inputs available
+
+       if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
+               switch (vcs->input) {
+               case VINO_INPUT_COMPOSITE:
+                       index = 0;
+                       break;
+               case VINO_INPUT_SVIDEO:
+                       index = 1;
+                       break;
+               case VINO_INPUT_D1:
+                       index = 2;
+                       break;
+               }
+       } else if (vino_drvdata->decoder.driver) {
+               switch (vcs->input) {
+               case VINO_INPUT_COMPOSITE:
+                       index = 0;
+                       break;
+               case VINO_INPUT_SVIDEO:
+                       index = 1;
+                       break;
+               }
+       } else if (vino_drvdata->camera.driver) {
+               switch (vcs->input) {
+               case VINO_INPUT_D1:
+                       index = 0;
+                       break;
+               }
+       }
+
+       return index;
+}
+
+/* V4L2 ioctls */
+
+static void vino_v4l2_querycap(struct v4l2_capability *cap)
+{
+       memset(cap, 0, sizeof(struct v4l2_capability));
+
+       strcpy(cap->driver, vino_driver_name);
+       strcpy(cap->card, vino_driver_description);
+       strcpy(cap->bus_info, vino_bus_name);
+       cap->version = VINO_VERSION_CODE;
+       cap->capabilities =
+               V4L2_CAP_VIDEO_CAPTURE |
+               V4L2_CAP_STREAMING;
+       // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
+}
+
+static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
+                              struct v4l2_input *i)
+{
+       __u32 index = i->index;
+       int input;
+       dprintk("requested index = %d\n", index);
+
+       input = vino_enum_input(vcs, index);
+       if (input == VINO_INPUT_NONE)
+               return -EINVAL;
+
+       memset(i, 0, sizeof(struct v4l2_input));
+
+       i->index = index;
+       i->type = V4L2_INPUT_TYPE_CAMERA;
+       i->std = vino_inputs[input].std;
+       strcpy(i->name, vino_inputs[input].name);
+
+       if ((input == VINO_INPUT_COMPOSITE)
+           || (input == VINO_INPUT_SVIDEO)) {
+               struct saa7191_status status;
+               i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
+               i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
+               i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
+                            struct v4l2_input *i)
+{
+       __u32 index;
+       int input;
+
+       spin_lock(&vino_drvdata->input_lock);
+       input = vcs->input;
+       index = vino_find_input_index(vcs);
+       spin_unlock(&vino_drvdata->input_lock);
+
+       dprintk("input = %d\n", input);
+
+       if (input == VINO_INPUT_NONE) {
+               return -EINVAL;
+       }
+
+       memset(i, 0, sizeof(struct v4l2_input));
+
+       i->index = index;
+       i->type = V4L2_INPUT_TYPE_CAMERA;
+       i->std = vino_inputs[input].std;
+       strcpy(i->name, vino_inputs[input].name);
+
+       return 0;
+}
+
+static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
+                            struct v4l2_input *i)
+{
+       int input;
+       dprintk("requested input = %d\n", i->index);
+
+       input = vino_enum_input(vcs, i->index);
+       if (input == VINO_INPUT_NONE)
+               return -EINVAL;
+
+       return vino_set_input(vcs, input);
+}
+
+static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
+                            struct v4l2_standard *s)
+{
+       int index = s->index;
+       int data_norm = vino_enum_data_norm(vcs, index);
+       dprintk("standard index = %d\n", index);
+
+       if (data_norm == VINO_DATA_NORM_NONE)
+               return -EINVAL;
+
+       dprintk("standard name = %s\n",
+              vino_data_norms[data_norm].description);
+
+       memset(s, 0, sizeof(struct v4l2_standard));
+       s->index = index;
+
+       s->id = vino_data_norms[data_norm].std;
+       s->frameperiod.numerator = 1;
+       s->frameperiod.denominator =
+               vino_data_norms[data_norm].fps_max;
+       s->framelines =
+               vino_data_norms[data_norm].framelines;
+       strcpy(s->name,
+              vino_data_norms[data_norm].description);
+
+       return 0;
+}
+
+static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
+                          v4l2_std_id *std)
+{
+       spin_lock(&vino_drvdata->input_lock);
+       dprintk("current standard = %d\n", vcs->data_norm);
+       *std = vino_data_norms[vcs->data_norm].std;
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return 0;
+}
+
+static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
+                          v4l2_std_id *std)
+{
+       int ret = 0;
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       /* check if the standard is valid for the current input */
+       if (vino_is_input_owner(vcs)
+           && (vino_inputs[vcs->input].std & (*std))) {
+               dprintk("standard accepted\n");
+
+               /* change the video norm for SAA7191
+                * and accept NTSC for D1 (do nothing) */
+
+               if (vcs->input == VINO_INPUT_D1)
+                       goto out;
+
+               if ((*std) & V4L2_STD_PAL) {
+                       vino_set_data_norm(vcs, VINO_DATA_NORM_PAL);
+                       vcs->data_norm = VINO_DATA_NORM_PAL;
+               } else if ((*std) & V4L2_STD_NTSC) {
+                       vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC);
+                       vcs->data_norm = VINO_DATA_NORM_NTSC;
+               } else if ((*std) & V4L2_STD_SECAM) {
+                       vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM);
+                       vcs->data_norm = VINO_DATA_NORM_SECAM;
+               } else {
+                       ret = -EINVAL;
+               }
+       } else {
+               ret = -EINVAL;
+       }
+
+out:
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return ret;
+}
+
+static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
+                             struct v4l2_fmtdesc *fd)
+{
+       enum v4l2_buf_type type = fd->type;
+       int index = fd->index;
+       dprintk("format index = %d\n", index);
+
+       switch (fd->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+               if ((fd->index < 0) ||
+                   (fd->index >= VINO_DATA_FMT_COUNT))
+                       return -EINVAL;
+               dprintk("format name = %s\n",
+                      vino_data_formats[index].description);
+
+               memset(fd, 0, sizeof(struct v4l2_fmtdesc));
+               fd->index = index;
+               fd->type = type;
+               fd->pixelformat = vino_data_formats[index].pixelformat;
+               strcpy(fd->description, vino_data_formats[index].description);
+               break;
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
+                            struct v4l2_format *f)
+{
+       struct vino_channel_settings tempvcs;
+
+       switch (f->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct v4l2_pix_format *pf = &f->fmt.pix;
+
+               dprintk("requested: w = %d, h = %d\n",
+                      pf->width, pf->height);
+
+               spin_lock(&vino_drvdata->input_lock);
+               memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
+               spin_unlock(&vino_drvdata->input_lock);
+
+               tempvcs.data_format = vino_find_data_format(pf->pixelformat);
+               if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
+                       tempvcs.data_format = VINO_DATA_FMT_RGB32;
+                       pf->pixelformat =
+                               vino_data_formats[tempvcs.data_format].
+                               pixelformat;
+               }
+
+               /* data format must be set before clipping/scaling */
+               vino_set_scaling(&tempvcs, pf->width, pf->height);
+
+               dprintk("data format = %s\n",
+                      vino_data_formats[tempvcs.data_format].description);
+
+               pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
+                       tempvcs.decimation;
+               pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
+                       tempvcs.decimation;
+
+               pf->field = V4L2_FIELD_INTERLACED;
+               pf->bytesperline = tempvcs.line_size;
+               pf->sizeimage = tempvcs.line_size *
+                       (tempvcs.clipping.bottom - tempvcs.clipping.top) /
+                       tempvcs.decimation;
+               pf->colorspace =
+                       vino_data_formats[tempvcs.data_format].colorspace;
+
+               pf->priv = 0;
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
+                          struct v4l2_format *f)
+{
+       switch (f->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct v4l2_pix_format *pf = &f->fmt.pix;
+               spin_lock(&vino_drvdata->input_lock);
+
+               pf->width = (vcs->clipping.right - vcs->clipping.left) /
+                       vcs->decimation;
+               pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
+                       vcs->decimation;
+               pf->pixelformat =
+                       vino_data_formats[vcs->data_format].pixelformat;
+
+               pf->field = V4L2_FIELD_INTERLACED;
+               pf->bytesperline = vcs->line_size;
+               pf->sizeimage = vcs->line_size *
+                       (vcs->clipping.bottom - vcs->clipping.top) /
+                       vcs->decimation;
+               pf->colorspace =
+                       vino_data_formats[vcs->data_format].colorspace;
+
+               pf->priv = 0;
+
+               spin_unlock(&vino_drvdata->input_lock);
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
+                          struct v4l2_format *f)
+{
+       int data_format;
+
+       switch (f->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct v4l2_pix_format *pf = &f->fmt.pix;
+               spin_lock(&vino_drvdata->input_lock);
+
+               if (!vino_is_input_owner(vcs)) {
+                       spin_unlock(&vino_drvdata->input_lock);
+                       return -EINVAL;
+               }
+
+               data_format = vino_find_data_format(pf->pixelformat);
+               if (data_format == VINO_DATA_FMT_NONE) {
+                       vcs->data_format = VINO_DATA_FMT_RGB32;
+                       pf->pixelformat =
+                               vino_data_formats[vcs->data_format].
+                               pixelformat;
+               } else {
+                       vcs->data_format = data_format;
+               }
+
+               /* data format must be set before clipping/scaling */
+               vino_set_scaling(vcs, pf->width, pf->height);
+
+               dprintk("data format = %s\n",
+                      vino_data_formats[vcs->data_format].description);
+
+               pf->width = vcs->clipping.right - vcs->clipping.left;
+               pf->height = vcs->clipping.bottom - vcs->clipping.top;
+
+               pf->field = V4L2_FIELD_INTERLACED;
+               pf->bytesperline = vcs->line_size;
+               pf->sizeimage = vcs->line_size *
+                       (vcs->clipping.bottom - vcs->clipping.top) /
+                       vcs->decimation;
+               pf->colorspace =
+                       vino_data_formats[vcs->data_format].colorspace;
+
+               pf->priv = 0;
+
+               spin_unlock(&vino_drvdata->input_lock);
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
+                            struct v4l2_cropcap *ccap)
+{
+       const struct vino_data_norm *norm;
+
+       switch (ccap->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+               spin_lock(&vino_drvdata->input_lock);
+               norm = &vino_data_norms[vcs->data_norm];
+               spin_unlock(&vino_drvdata->input_lock);
+
+               ccap->bounds.left = 0;
+               ccap->bounds.top = 0;
+               ccap->bounds.width = norm->width;
+               ccap->bounds.height = norm->height;
+               memcpy(&ccap->defrect, &ccap->bounds,
+                      sizeof(struct v4l2_rect));
+
+               ccap->pixelaspect.numerator = 1;
+               ccap->pixelaspect.denominator = 1;
+               break;
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
+                           struct v4l2_crop *c)
+{
+       switch (c->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+               spin_lock(&vino_drvdata->input_lock);
+
+               c->c.left = vcs->clipping.left;
+               c->c.top = vcs->clipping.top;
+               c->c.width = vcs->clipping.right - vcs->clipping.left;
+               c->c.height = vcs->clipping.bottom - vcs->clipping.top;
+
+               spin_unlock(&vino_drvdata->input_lock);
+               break;
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
+                           struct v4l2_crop *c)
+{
+       switch (c->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+               spin_lock(&vino_drvdata->input_lock);
+
+               if (!vino_is_input_owner(vcs)) {
+                       spin_unlock(&vino_drvdata->input_lock);
+                       return -EINVAL;
+               }
+               vino_set_clipping(vcs, c->c.left, c->c.top,
+                                 c->c.width, c->c.height);
+
+               spin_unlock(&vino_drvdata->input_lock);
+               break;
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
+                           struct v4l2_streamparm *sp)
+{
+       switch (sp->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct v4l2_captureparm *cp = &sp->parm.capture;
+               memset(cp, 0, sizeof(struct v4l2_captureparm));
+
+               cp->capability = V4L2_CAP_TIMEPERFRAME;
+               cp->timeperframe.numerator = 1;
+
+               spin_lock(&vino_drvdata->input_lock);
+               cp->timeperframe.denominator = vcs->fps;
+               spin_unlock(&vino_drvdata->input_lock);
+
+               // TODO: cp->readbuffers = xxx;
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
+                           struct v4l2_streamparm *sp)
+{
+       switch (sp->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct v4l2_captureparm *cp = &sp->parm.capture;
+
+               spin_lock(&vino_drvdata->input_lock);
+               if (!vino_is_input_owner(vcs)) {
+                       spin_unlock(&vino_drvdata->input_lock);
+                       return -EINVAL;
+               }
+
+               if ((cp->timeperframe.numerator == 0) ||
+                   (cp->timeperframe.denominator == 0)) {
+                       /* reset framerate */
+                       vino_set_default_framerate(vcs);
+               } else {
+                       vino_set_framerate(vcs, cp->timeperframe.denominator /
+                                          cp->timeperframe.numerator);
+               }
+               spin_unlock(&vino_drvdata->input_lock);
+
+               // TODO: set buffers according to cp->readbuffers
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
+                            struct v4l2_requestbuffers *rb)
+{
+       if (vcs->reading)
+               return -EBUSY;
+
+       switch (rb->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               // TODO: check queue type
+               if (rb->memory != V4L2_MEMORY_MMAP) {
+                       dprintk("type not mmap\n");
+                       return -EINVAL;
+               }
+
+               if (vino_is_capturing(vcs)) {
+                       dprintk("busy, capturing\n");
+                       return -EBUSY;
+               }
+
+               dprintk("count = %d\n", rb->count);
+               if (rb->count > 0) {
+                       if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
+                               dprintk("busy, buffers still mapped\n");
+                               return -EBUSY;
+                       } else {
+                               vino_queue_free(&vcs->fb_queue);
+                               vino_queue_init(&vcs->fb_queue, &rb->count);
+                       }
+               } else {
+                       vino_capture_stop(vcs);
+                       vino_queue_free(&vcs->fb_queue);
+               }
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
+                                       struct vino_framebuffer *fb,
+                                       struct v4l2_buffer *b)
+{
+       if (vino_queue_outgoing_contains(&vcs->fb_queue,
+                                        fb->id)) {
+               b->flags &= ~V4L2_BUF_FLAG_QUEUED;
+               b->flags |= V4L2_BUF_FLAG_DONE;
+       } else if (vino_queue_incoming_contains(&vcs->fb_queue,
+                                      fb->id)) {
+               b->flags &= ~V4L2_BUF_FLAG_DONE;
+               b->flags |= V4L2_BUF_FLAG_QUEUED;
+       } else {
+               b->flags &= ~(V4L2_BUF_FLAG_DONE |
+                             V4L2_BUF_FLAG_QUEUED);
+       }
+
+       b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
+
+       if (fb->map_count > 0)
+               b->flags |= V4L2_BUF_FLAG_MAPPED;
+
+       b->index = fb->id;
+       b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
+               V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
+       b->m.offset = fb->offset;
+       b->bytesused = fb->data_size;
+       b->length = fb->size;
+       b->field = V4L2_FIELD_INTERLACED;
+       b->sequence = fb->frame_counter;
+       memcpy(&b->timestamp, &fb->timestamp,
+              sizeof(struct timeval));
+       // b->input ?
+
+       dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
+               fb->id, fb->size, fb->data_size, fb->offset);
+}
+
+static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
+                             struct v4l2_buffer *b)
+{
+       if (vcs->reading)
+               return -EBUSY;
+
+       switch (b->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct vino_framebuffer *fb;
+
+               // TODO: check queue type
+               if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
+                       dprintk("invalid index = %d\n",
+                              b->index);
+                       return -EINVAL;
+               }
+
+               fb = vino_queue_get_buffer(&vcs->fb_queue,
+                                          b->index);
+               if (fb == NULL) {
+                       dprintk("vino_queue_get_buffer() failed");
+                       return -EINVAL;
+               }
+
+               vino_v4l2_get_buffer_status(vcs, fb, b);
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
+                         struct v4l2_buffer *b)
+{
+       if (vcs->reading)
+               return -EBUSY;
+
+       switch (b->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct vino_framebuffer *fb;
+               int ret;
+
+               // TODO: check queue type
+               if (b->memory != V4L2_MEMORY_MMAP) {
+                       dprintk("type not mmap\n");
+                       return -EINVAL;
+               }
+
+               fb = vino_capture_enqueue(vcs, b->index);
+               if (fb == NULL)
+                       return -EINVAL;
+
+               vino_v4l2_get_buffer_status(vcs, fb, b);
+
+               if (vcs->streaming) {
+                       ret = vino_capture_next(vcs, 1);
+                       if (ret)
+                               return ret;
+               }
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
+                          struct v4l2_buffer *b,
+                          unsigned int nonblocking)
+{
+       if (vcs->reading)
+               return -EBUSY;
+
+       switch (b->type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+               struct vino_framebuffer *fb;
+               unsigned int incoming, outgoing;
+               int err;
+
+               // TODO: check queue type
+
+               err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
+               if (err) {
+                       dprintk("vino_queue_get_incoming() failed\n");
+                       return -EIO;
+               }
+               err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
+               if (err) {
+                       dprintk("vino_queue_get_outgoing() failed\n");
+                       return -EIO;
+               }
+
+               dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
+
+               if (outgoing == 0) {
+                       if (incoming == 0) {
+                               dprintk("no incoming or outgoing buffers\n");
+                               return -EINVAL;
+                       }
+                       if (nonblocking) {
+                               dprintk("non-blocking I/O was selected and "
+                                       "there are no buffers to dequeue\n");
+                               return -EAGAIN;
+                       }
+
+                       err = vino_wait_for_frame(vcs);
+                       if (err) {
+                               err = vino_wait_for_frame(vcs);
+                               if (err) {
+                                       /* interrupted */
+                                       vino_capture_failed(vcs);
+                                       return -EIO;
+                               }
+                       }
+               }
+
+               fb = vino_queue_remove(&vcs->fb_queue, &b->index);
+               if (fb == NULL) {
+                       dprintk("vino_queue_remove() failed\n");
+                       return -EINVAL;
+               }
+
+               err = vino_check_buffer(vcs, fb);
+               if (err)
+                       return -EIO;
+
+               vino_v4l2_get_buffer_status(vcs, fb, b);
+               break;
+       }
+       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
+{
+       unsigned int incoming;
+       int ret;
+       if (vcs->reading)
+               return -EBUSY;
+
+       if (vcs->streaming)
+               return 0;
+
+       // TODO: check queue type
+
+       if (vino_queue_get_length(&vcs->fb_queue) < 1) {
+               dprintk("no buffers allocated\n");
+               return -EINVAL;
+       }
+
+       ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
+       if (ret) {
+               dprintk("vino_queue_get_incoming() failed\n");
+               return -EINVAL;
+       }
+
+       vcs->streaming = 1;
+
+       if (incoming > 0) {
+               ret = vino_capture_next(vcs, 1);
+               if (ret) {
+                       vcs->streaming = 0;
+
+                       dprintk("couldn't start capture\n");
+                       return -EINVAL;
+               }
+       }
+
+       return 0;
+}
+
+static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
+{
+       if (vcs->reading)
+               return -EBUSY;
+
+       if (!vcs->streaming)
+               return 0;
+
+       vino_capture_stop(vcs);
+       vcs->streaming = 0;
+
+       return 0;
+}
+
+static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
+                              struct v4l2_queryctrl *queryctrl)
+{
+       int i;
+       int err = 0;
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       switch (vcs->input) {
+       case VINO_INPUT_D1:
+               for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
+                       if (vino_indycam_v4l2_controls[i].id ==
+                           queryctrl->id) {
+                               memcpy(queryctrl,
+                                      &vino_indycam_v4l2_controls[i],
+                                      sizeof(struct v4l2_queryctrl));
+                               goto found;
+                       }
+               }
+
+               err =  -EINVAL;
+               break;
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
+                       if (vino_saa7191_v4l2_controls[i].id ==
+                           queryctrl->id) {
+                               memcpy(queryctrl,
+                                      &vino_saa7191_v4l2_controls[i],
+                                      sizeof(struct v4l2_queryctrl));
+                               goto found;
+                       }
+               }
+
+               err =  -EINVAL;
+               break;
+       default:
+               err =  -EINVAL;
+       }
+
+ found:
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return err;
+}
+
+static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
+                           struct v4l2_control *control)
+{
+       struct indycam_control indycam_ctrl;
+       struct saa7191_control saa7191_ctrl;
+       int err = 0;
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       switch (vcs->input) {
+       case VINO_INPUT_D1:
+               i2c_camera_command(DECODER_INDYCAM_GET_CONTROLS,
+                                  &indycam_ctrl);
+
+               switch(control->id) {
+               case V4L2_CID_AUTOGAIN:
+                       control->value = indycam_ctrl.agc;
+                       break;
+               case V4L2_CID_AUTO_WHITE_BALANCE:
+                       control->value = indycam_ctrl.awb;
+                       break;
+               case V4L2_CID_GAIN:
+                       control->value = indycam_ctrl.gain;
+                       break;
+               case V4L2_CID_PRIVATE_BASE:
+                       control->value = indycam_ctrl.red_saturation;
+                       break;
+               case V4L2_CID_PRIVATE_BASE + 1:
+                       control->value = indycam_ctrl.blue_saturation;
+                       break;
+               case V4L2_CID_RED_BALANCE:
+                       control->value = indycam_ctrl.red_balance;
+                       break;
+               case V4L2_CID_BLUE_BALANCE:
+                       control->value = indycam_ctrl.blue_balance;
+                       break;
+               case V4L2_CID_EXPOSURE:
+                       control->value = indycam_ctrl.shutter;
+                       break;
+               case V4L2_CID_GAMMA:
+                       control->value = indycam_ctrl.gamma;
+                       break;
+               default:
+                       err = -EINVAL;
+               }
+               break;
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               i2c_decoder_command(DECODER_SAA7191_GET_CONTROLS,
+                                  &saa7191_ctrl);
+
+               switch(control->id) {
+               case V4L2_CID_HUE:
+                       control->value = saa7191_ctrl.hue;
+                       break;
+               case V4L2_CID_PRIVATE_BASE:
+                       control->value = saa7191_ctrl.vtrc;
+                       break;
+               default:
+                       err = -EINVAL;
+               }
+               break;
+       default:
+               err =  -EINVAL;
+       }
+
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return err;
+}
+
+static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
+                           struct v4l2_control *control)
+{
+       struct indycam_control indycam_ctrl;
+       struct saa7191_control saa7191_ctrl;
+       int i;
+       int err = 0;
+
+       spin_lock(&vino_drvdata->input_lock);
+
+       switch (vcs->input) {
+       case VINO_INPUT_D1:
+               for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
+                       if (vino_indycam_v4l2_controls[i].id ==
+                           control->id) {
+                               if ((control->value >=
+                                    vino_indycam_v4l2_controls[i].minimum)
+                                   && (control->value <=
+                                       vino_indycam_v4l2_controls[i].
+                                       maximum)) {
+                                       goto ok1;
+                               } else {
+                                       err = -ERANGE;
+                                       goto error;
+                               }
+                       }
+               }
+               err = -EINVAL;
+               goto error;
+
+ok1:
+               indycam_ctrl.agc = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.awb = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.shutter = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.gain = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.red_balance = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.blue_balance = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.red_saturation = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.blue_saturation = INDYCAM_VALUE_UNCHANGED;
+               indycam_ctrl.gamma = INDYCAM_VALUE_UNCHANGED;
+
+               switch(control->id) {
+               case V4L2_CID_AUTOGAIN:
+                       indycam_ctrl.agc = control->value;
+                       break;
+               case V4L2_CID_AUTO_WHITE_BALANCE:
+                       indycam_ctrl.awb = control->value;
+                       break;
+               case V4L2_CID_GAIN:
+                       indycam_ctrl.gain = control->value;
+                       break;
+               case V4L2_CID_PRIVATE_BASE:
+                       indycam_ctrl.red_saturation = control->value;
+                       break;
+               case V4L2_CID_PRIVATE_BASE + 1:
+                       indycam_ctrl.blue_saturation = control->value;
+                       break;
+               case V4L2_CID_RED_BALANCE:
+                       indycam_ctrl.red_balance = control->value;
+                       break;
+               case V4L2_CID_BLUE_BALANCE:
+                       indycam_ctrl.blue_balance = control->value;
+                       break;
+               case V4L2_CID_EXPOSURE:
+                       indycam_ctrl.shutter = control->value;
+                       break;
+               case V4L2_CID_GAMMA:
+                       indycam_ctrl.gamma = control->value;
+                       break;
+               default:
+                       err =  -EINVAL;
+               }
+
+               if (!err)
+                       i2c_camera_command(DECODER_INDYCAM_SET_CONTROLS,
+                                          &indycam_ctrl);
+               break;
+       case VINO_INPUT_COMPOSITE:
+       case VINO_INPUT_SVIDEO:
+               for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
+                       if (vino_saa7191_v4l2_controls[i].id ==
+                           control->id) {
+                               if ((control->value >=
+                                    vino_saa7191_v4l2_controls[i].minimum)
+                                   && (control->value <=
+                                       vino_saa7191_v4l2_controls[i].
+                                       maximum)) {
+                                       goto ok2;
+                               } else {
+                                       err = -ERANGE;
+                                       goto error;
+                               }
+                       }
+               }
+               err = -EINVAL;
+               goto error;
+
+ok2:
+               saa7191_ctrl.hue = SAA7191_VALUE_UNCHANGED;
+               saa7191_ctrl.vtrc = SAA7191_VALUE_UNCHANGED;
+
+               switch(control->id) {
+               case V4L2_CID_HUE:
+                       saa7191_ctrl.hue = control->value;
+                       break;
+               case V4L2_CID_PRIVATE_BASE:
+                       saa7191_ctrl.vtrc = control->value;
+                       break;
+               default:
+                       err =  -EINVAL;
+               }
+
+               if (!err)
+                       i2c_decoder_command(DECODER_SAA7191_SET_CONTROLS,
+                                           &saa7191_ctrl);
+               break;
+       default:
+               err =  -EINVAL;
+       }
+
+error:
+       spin_unlock(&vino_drvdata->input_lock);
+
+       return err;
+}
+
+/* File operations */
+
+static int vino_open(struct inode *inode, struct file *file)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+       int ret = 0;
+       dprintk("open(): channel = %c\n",
+              (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
+
+       down(&vcs->sem);
+
+       if (vcs->users) {
+               dprintk("open(): driver busy\n");
+               ret = -EBUSY;
+               goto out;
+       }
+
+       ret = vino_acquire_input(vcs);
+       if (ret) {
+               dprintk("open(): vino_acquire_input() failed\n");
+               goto out;
+       }
+
+       vcs->users++;
+
+ out:
+       up(&vcs->sem);
+
+       dprintk("open(): %s!\n", ret ? "failed" : "complete");
+
+       return ret;
+}
+
+static int vino_close(struct inode *inode, struct file *file)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+       dprintk("close():\n");
+
+       down(&vcs->sem);
+
+       vcs->users--;
+
+       if (!vcs->users) {
+               vino_release_input(vcs);
+
+               /* stop DMA and free buffers */
+               vino_capture_stop(vcs);
+               vino_queue_free(&vcs->fb_queue);
+       }
+
+       up(&vcs->sem);
+
+       return 0;
+}
+
+static void vino_vm_open(struct vm_area_struct *vma)
+{
+       struct vino_framebuffer *fb = vma->vm_private_data;
+
+       fb->map_count++;
+       dprintk("vino_vm_open(): count = %d\n", fb->map_count);
+}
+
+static void vino_vm_close(struct vm_area_struct *vma)
+{
+       struct vino_framebuffer *fb = vma->vm_private_data;
+
+       fb->map_count--;
+       dprintk("vino_vm_close(): count = %d\n", fb->map_count);
+}
+
+static struct vm_operations_struct vino_vm_ops = {
+       .open   = vino_vm_open,
+       .close  = vino_vm_close,
+};
+
+static int vino_mmap(struct file *file, struct vm_area_struct *vma)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+
+       unsigned long start = vma->vm_start;
+       unsigned long size = vma->vm_end - vma->vm_start;
+       unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+       struct vino_framebuffer *fb = NULL;
+       unsigned int i, length;
+       int ret = 0;
+
+       dprintk("mmap():\n");
+
+       // TODO: reject mmap if already mapped
+
+       if (down_interruptible(&vcs->sem))
+               return -EINTR;
+
+       if (vcs->reading) {
+               ret = -EBUSY;
+               goto out;
+       }
+
+       // TODO: check queue type
+
+       if (!(vma->vm_flags & VM_WRITE)) {
+               dprintk("mmap(): app bug: PROT_WRITE please\n");
+               ret = -EINVAL;
+               goto out;
+       }
+       if (!(vma->vm_flags & VM_SHARED)) {
+               dprintk("mmap(): app bug: MAP_SHARED please\n");
+               ret = -EINVAL;
+               goto out;
+       }
+
+       /* find the correct buffer using offset */
+       length = vino_queue_get_length(&vcs->fb_queue);
+       if (length == 0) {
+               dprintk("mmap(): queue not initialized\n");
+               ret = -EINVAL;
+               goto out;
+       }
+
+       for (i = 0; i < length; i++) {
+               fb = vino_queue_get_buffer(&vcs->fb_queue, i);
+               if (fb == NULL) {
+                       dprintk("mmap(): vino_queue_get_buffer() failed\n");
+                       ret = -EINVAL;
+                       goto out;
+               }
+
+               if (fb->offset == offset)
+                       goto found;
+       }
+
+       dprintk("mmap(): invalid offset = %lu\n", offset);
+       ret = -EINVAL;
+       goto out;
+
+found:
+       dprintk("mmap(): buffer = %d\n", i);
+
+       if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
+               dprintk("mmap(): failed: size = %lu > %lu\n",
+                       size, fb->desc_table.page_count * PAGE_SIZE);
+               ret = -EINVAL;
+               goto out;
+       }
+
+       for (i = 0; i < fb->desc_table.page_count; i++) {
+               unsigned long pfn =
+                       virt_to_phys((void *)fb->desc_table.virtual[i]) >>
+                       PAGE_SHIFT;
+
+               if (size < PAGE_SIZE)
+                       break;
+
+               // protection was: PAGE_READONLY
+               if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
+                                   vma->vm_page_prot)) {
+                       dprintk("mmap(): remap_pfn_range() failed\n");
+                       ret = -EAGAIN;
+                       goto out;
+               }
+
+               start += PAGE_SIZE;
+               size -= PAGE_SIZE;
+       }
+
+       fb->map_count = 1;
+
+       vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
+       vma->vm_flags &= ~VM_IO;
+       vma->vm_private_data = fb;
+       vma->vm_file = file;
+       vma->vm_ops = &vino_vm_ops;
+
+out:
+       up(&vcs->sem);
+
+       return ret;
+}
+
+static unsigned int vino_poll(struct file *file, poll_table *pt)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+       unsigned int outgoing;
+       unsigned int ret = 0;
+
+       // lock mutex (?)
+       // TODO: this has to be corrected for different read modes
+
+       dprintk("poll():\n");
+
+       if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
+               dprintk("poll(): vino_queue_get_outgoing() failed\n");
+               ret = POLLERR;
+               goto error;
+       }
+       if (outgoing > 0)
+               goto over;
+
+       poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
+
+       if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
+               dprintk("poll(): vino_queue_get_outgoing() failed\n");
+               ret = POLLERR;
+               goto error;
+       }
+
+over:
+       dprintk("poll(): data %savailable\n",
+               (outgoing > 0) ? "" : "not ");
+       if (outgoing > 0) {
+               ret = POLLIN | POLLRDNORM;
+       }
+
+error:
+
+       return ret;
+}
+
+static int vino_do_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, void *arg)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+
+       switch (_IOC_TYPE(cmd)) {
+       case 'v':
+               dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
+               break;
+       case 'V':
+               dprintk("ioctl(): V4L2 %s (0x%08x)\n",
+                       v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
+               break;
+       default:
+               dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
+       }
+
+       switch (cmd) {
+       /* TODO: V4L1 interface (use compatibility layer?) */
+       /* V4L2 interface */
+       case VIDIOC_QUERYCAP: {
+               vino_v4l2_querycap(arg);
+               break;
+       }
+       case VIDIOC_ENUMINPUT: {
+               return vino_v4l2_enuminput(vcs, arg);
+       }
+       case VIDIOC_G_INPUT: {
+               return vino_v4l2_g_input(vcs, arg);
+       }
+       case VIDIOC_S_INPUT: {
+               return vino_v4l2_s_input(vcs, arg);
+       }
+       case VIDIOC_ENUMSTD: {
+               return vino_v4l2_enumstd(vcs, arg);
+       }
+       case VIDIOC_G_STD: {
+               return vino_v4l2_g_std(vcs, arg);
+       }
+       case VIDIOC_S_STD: {
+               return vino_v4l2_s_std(vcs, arg);
+       }
+       case VIDIOC_ENUM_FMT: {
+               return vino_v4l2_enum_fmt(vcs, arg);
+       }
+       case VIDIOC_TRY_FMT: {
+               return vino_v4l2_try_fmt(vcs, arg);
+       }
+       case VIDIOC_G_FMT: {
+               return vino_v4l2_g_fmt(vcs, arg);
+       }
+       case VIDIOC_S_FMT: {
+               return vino_v4l2_s_fmt(vcs, arg);
+       }
+       case VIDIOC_CROPCAP: {
+               return vino_v4l2_cropcap(vcs, arg);
+       }
+       case VIDIOC_G_CROP: {
+               return vino_v4l2_g_crop(vcs, arg);
+       }
+       case VIDIOC_S_CROP: {
+               return vino_v4l2_s_crop(vcs, arg);
+       }
+       case VIDIOC_G_PARM: {
+               return vino_v4l2_g_parm(vcs, arg);
+       }
+       case VIDIOC_S_PARM: {
+               return vino_v4l2_s_parm(vcs, arg);
+       }
+       case VIDIOC_REQBUFS: {
+               return vino_v4l2_reqbufs(vcs, arg);
+       }
+       case VIDIOC_QUERYBUF: {
+               return vino_v4l2_querybuf(vcs, arg);
+       }
+       case VIDIOC_QBUF: {
+               return vino_v4l2_qbuf(vcs, arg);
+       }
+       case VIDIOC_DQBUF: {
+               return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
+       }
+       case VIDIOC_STREAMON: {
+               return vino_v4l2_streamon(vcs);
+       }
+       case VIDIOC_STREAMOFF: {
+               return vino_v4l2_streamoff(vcs);
+       }
+       case VIDIOC_QUERYCTRL: {
+               return vino_v4l2_queryctrl(vcs, arg);
+       }
+       case VIDIOC_G_CTRL: {
+               return vino_v4l2_g_ctrl(vcs, arg);
+       }
+       case VIDIOC_S_CTRL: {
+               return vino_v4l2_s_ctrl(vcs, arg);
+       }
+       default:
+               return -ENOIOCTLCMD;
+       }
+
+       return 0;
+}
+
+static int vino_ioctl(struct inode *inode, struct file *file,
+                     unsigned int cmd, unsigned long arg)
+{
+       struct video_device *dev = video_devdata(file);
+       struct vino_channel_settings *vcs = video_get_drvdata(dev);
+       int ret;
+
+       if (down_interruptible(&vcs->sem))
+               return -EINTR;
+
+       ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
+
+       up(&vcs->sem);
+
+       return ret;
+}
+
+/* Initialization and cleanup */
+
+// __initdata
+static int vino_init_stage = 0;
+
+static struct file_operations vino_fops = {
+       .owner          = THIS_MODULE,
+       .open           = vino_open,
+       .release        = vino_close,
+       .ioctl          = vino_ioctl,
+       .mmap           = vino_mmap,
+       .poll           = vino_poll,
+       .llseek         = no_llseek,
+};
+
+static struct video_device v4l_device_template = {
+       .name           = "NOT SET",
+       //.type         = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE |
+       //      VID_TYPE_CLIPPING | VID_TYPE_SCALES, VID_TYPE_OVERLAY
+       .hardware       = VID_HARDWARE_VINO,
+       .fops           = &vino_fops,
+       .minor          = -1,
+};
+
+static void vino_module_cleanup(int stage)
+{
+       switch(stage) {
+       case 10:
+               video_unregister_device(vino_drvdata->b.v4l_device);
+               vino_drvdata->b.v4l_device = NULL;
+       case 9:
+               video_unregister_device(vino_drvdata->a.v4l_device);
+               vino_drvdata->a.v4l_device = NULL;
+       case 8:
+               vino_i2c_del_bus();
+       case 7:
+               free_irq(SGI_VINO_IRQ, NULL);
+       case 6:
+               if (vino_drvdata->b.v4l_device) {
+                       video_device_release(vino_drvdata->b.v4l_device);
+                       vino_drvdata->b.v4l_device = NULL;
+               }
+       case 5:
+               if (vino_drvdata->a.v4l_device) {
+                       video_device_release(vino_drvdata->a.v4l_device);
+                       vino_drvdata->a.v4l_device = NULL;
+               }
+       case 4:
+               /* all entries in dma_cpu dummy table have the same address */
+               dma_unmap_single(NULL,
+                                vino_drvdata->dummy_desc_table.dma_cpu[0],
+                                PAGE_SIZE, DMA_FROM_DEVICE);
+               dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
+                                 * sizeof(dma_addr_t),
+                                 (void *)vino_drvdata->
+                                 dummy_desc_table.dma_cpu,
+                                 vino_drvdata->dummy_desc_table.dma);
+       case 3:
+               free_page(vino_drvdata->dummy_page);
+       case 2:
+               kfree(vino_drvdata);
+       case 1:
+               iounmap(vino);
+       case 0:
+               break;
+       default:
+               dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
+                       stage);
+       }
+}
+
+static int vino_probe(void)
+{
+       unsigned long rev_id;
+
+       if (ip22_is_fullhouse()) {
+               printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
+               return -ENODEV;
+       }
+
+       if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
+               printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
+               return -ENODEV;
+       }
+
+       vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
+       if (!vino) {
+               printk(KERN_ERR "VINO: ioremap() failed\n");
+               return -EIO;
+       }
+       vino_init_stage++;
+
+       if (get_dbe(rev_id, &(vino->rev_id))) {
+               printk(KERN_ERR "Failed to read VINO revision register\n");
+               vino_module_cleanup(vino_init_stage);
+               return -ENODEV;
+       }
+
+       if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
+               printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
+                      rev_id);
+               vino_module_cleanup(vino_init_stage);
+               return -ENODEV;
+       }
+
+       printk(KERN_INFO "VINO with chip ID %ld, revision %ld found\n",
+              VINO_ID_VALUE(rev_id), VINO_REV_NUM(rev_id));
+
+       return 0;
+}
+
+static int vino_init(void)
+{
+       dma_addr_t dma_dummy_address;
+       int i;
+
+       vino_drvdata = (struct vino_settings *)
+               kmalloc(sizeof(struct vino_settings), GFP_KERNEL);
+       if (!vino_drvdata) {
+               vino_module_cleanup(vino_init_stage);
+               return -ENOMEM;
+       }
+       memset(vino_drvdata, 0, sizeof(struct vino_settings));
+       vino_init_stage++;
+
+       /* create a dummy dma descriptor */
+       vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
+       if (!vino_drvdata->dummy_page) {
+               vino_module_cleanup(vino_init_stage);
+               return -ENOMEM;
+       }
+       vino_init_stage++;
+
+       // TODO: use page_count in dummy_desc_table
+
+       vino_drvdata->dummy_desc_table.dma_cpu =
+               dma_alloc_coherent(NULL,
+               VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
+               &vino_drvdata->dummy_desc_table.dma,
+               GFP_KERNEL | GFP_DMA);
+       if (!vino_drvdata->dummy_desc_table.dma_cpu) {
+               vino_module_cleanup(vino_init_stage);
+               return -ENOMEM;
+       }
+       vino_init_stage++;
+
+       dma_dummy_address = dma_map_single(NULL,
+                                          (void *)vino_drvdata->dummy_page,
+                                       PAGE_SIZE, DMA_FROM_DEVICE);
+       for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
+               vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
+       }
+
+       /* initialize VINO */
+
+       vino->control = 0;
+       vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
+       vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
+       udelay(VINO_DESC_FETCH_DELAY);
+
+       vino->intr_status = 0;
+
+       vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
+       vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
+
+       return 0;
+}
+
+static int vino_init_channel_settings(struct vino_channel_settings *vcs,
+                                unsigned int channel, const char *name)
+{
+       vcs->channel = channel;
+       vcs->input = VINO_INPUT_NONE;
+       vcs->alpha = 0;
+       vcs->users = 0;
+       vcs->data_format = VINO_DATA_FMT_GREY;
+       vcs->data_norm = VINO_DATA_NORM_NTSC;
+       vcs->decimation = 1;
+       vino_set_default_clipping(vcs);
+       vino_set_default_framerate(vcs);
+
+       vcs->capturing = 0;
+
+       init_MUTEX(&vcs->sem);
+       spin_lock_init(&vcs->capture_lock);
+
+       init_MUTEX(&vcs->fb_queue.queue_sem);
+       spin_lock_init(&vcs->fb_queue.queue_lock);
+       init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
+
+       vcs->v4l_device = video_device_alloc();
+       if (!vcs->v4l_device) {
+               vino_module_cleanup(vino_init_stage);
+               return -ENOMEM;
+       }
+       vino_init_stage++;
+
+       memcpy(vcs->v4l_device, &v4l_device_template,
+              sizeof(struct video_device));
+       strcpy(vcs->v4l_device->name, name);
+       vcs->v4l_device->release = video_device_release;
+
+       video_set_drvdata(vcs->v4l_device, vcs);
+
+       return 0;
+}
+
+static int __init vino_module_init(void)
+{
+       int ret;
+
+       printk(KERN_INFO "SGI VINO driver version %s\n",
+              VINO_MODULE_VERSION);
+
+       ret = vino_probe();
+       if (ret)
+               return ret;
+
+       ret = vino_init();
+       if (ret)
+               return ret;
+
+       /* initialize data structures */
+
+       spin_lock_init(&vino_drvdata->vino_lock);
+       spin_lock_init(&vino_drvdata->input_lock);
+
+       ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
+                                   vino_v4l_device_name_a);
+       if (ret)
+               return ret;
+
+       ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
+                                   vino_v4l_device_name_b);
+       if (ret)
+               return ret;
+
+       /* initialize hardware and register V4L devices */
+
+       ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
+               vino_driver_description, NULL);
+       if (ret) {
+               printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
+                      SGI_VINO_IRQ);
+               vino_module_cleanup(vino_init_stage);
+               return -EAGAIN;
+       }
+       vino_init_stage++;
+
+       ret = vino_i2c_add_bus();
+       if (ret) {
+               printk(KERN_ERR "VINO I2C bus registration failed\n");
+               vino_module_cleanup(vino_init_stage);
+               return ret;
+       }
+       vino_init_stage++;
+
+       ret = video_register_device(vino_drvdata->a.v4l_device,
+                                   VFL_TYPE_GRABBER, -1);
+       if (ret < 0) {
+               printk(KERN_ERR "VINO channel A Video4Linux-device "
+                      "registration failed\n");
+               vino_module_cleanup(vino_init_stage);
+               return -EINVAL;
+       }
+       vino_init_stage++;
+
+       ret = video_register_device(vino_drvdata->b.v4l_device,
+                                   VFL_TYPE_GRABBER, -1);
+       if (ret < 0) {
+               printk(KERN_ERR "VINO channel B Video4Linux-device "
+                      "registration failed\n");
+               vino_module_cleanup(vino_init_stage);
+               return -EINVAL;
+       }
+       vino_init_stage++;
+
+#if defined(CONFIG_KMOD) && defined(MODULE)
+       request_module("saa7191");
+       request_module("indycam");
+#endif
+
+       dprintk("init complete!\n");
+
+       return 0;
+}
+
+static void __exit vino_module_exit(void)
+{
+       dprintk("exiting, stage = %d ...\n", vino_init_stage);
+       vino_module_cleanup(vino_init_stage);
+       dprintk("cleanup complete, exit!\n");
+}
+
+module_init(vino_module_init);
+module_exit(vino_module_exit);
diff -urN linux/drivers/media/video/vino.h linux/drivers/media/video/vino.h
--- linux/drivers/media/video/vino.h    2003/10/09 09:44:30     1.5
+++ linux/drivers/media/video/vino.h    2005/08/10 16:38:59     1.6
@@ -1,13 +1,19 @@
 /*
+ * Driver for the VINO (Video In No Out) system found in SGI Indys.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
  * Copyright (C) 1999 Ulf Karlsson <ulfc@bun.falkenberg.se>
  * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
  */
 
-#ifndef VINO_H
-#define VINO_H
+#ifndef _VINO_H_
+#define _VINO_H_
 
 #define VINO_BASE      0x00080000      /* Vino is in the EISA address space,
                                         * but it is not an EISA bus card */
+#define VINO_PAGE_SIZE 4096
 
 struct sgi_vino_channel {
        u32 _pad_alpha;
@@ -21,8 +27,9 @@
        u32 _pad_clip_end;
        volatile u32 clip_end;
 
+#define VINO_FRAMERT_FULL      0xfff
 #define VINO_FRAMERT_PAL       (1<<0)                  /* 0=NTSC 1=PAL */
-#define VINO_FRAMERT_RT(x)     (((x) & 0x1fff) << 1)   /* bits 1:12 */
+#define VINO_FRAMERT_RT(x)     (((x) & 0xfff) << 1)    /* bits 1:12 */
        u32 _pad_frame_rate;
        volatile u32 frame_rate;
 
@@ -67,18 +74,18 @@
        volatile u32 rev_id;
 
 #define VINO_CTRL_LITTLE_ENDIAN                (1<<0)
-#define VINO_CTRL_A_FIELD_TRANS_INT    (1<<1)  /* Field transferred int */
-#define VINO_CTRL_A_FIFO_OF_INT                (1<<2)  /* FIFO overflow int */
-#define VINO_CTRL_A_END_DESC_TBL_INT   (1<<3)  /* End of desc table int */
-#define VINO_CTRL_A_INT                        (VINO_CTRL_A_FIELD_TRANS_INT | \
-                                        VINO_CTRL_A_FIFO_OF_INT | \
-                                        VINO_CTRL_A_END_DESC_TBL_INT)
-#define VINO_CTRL_B_FIELD_TRANS_INT    (1<<4)  /* Field transferred int */
-#define VINO_CTRL_B_FIFO_OF_INT                (1<<5)  /* FIFO overflow int */
-#define VINO_CTRL_B_END_DESC_TBL_INT   (1<<6)  /* End of desc table int */
-#define VINO_CTRL_B_INT                        (VINO_CTRL_B_FIELD_TRANS_INT | \
-                                        VINO_CTRL_B_FIFO_OF_INT | \
-                                        VINO_CTRL_B_END_DESC_TBL_INT)
+#define VINO_CTRL_A_EOF_INT            (1<<1)  /* Field transferred int */
+#define VINO_CTRL_A_FIFO_INT           (1<<2)  /* FIFO overflow int */
+#define VINO_CTRL_A_EOD_INT            (1<<3)  /* End of desc table int */
+#define VINO_CTRL_A_INT                        (VINO_CTRL_A_EOF_INT | \
+                                        VINO_CTRL_A_FIFO_INT | \
+                                        VINO_CTRL_A_EOD_INT)
+#define VINO_CTRL_B_EOF_INT            (1<<4)  /* Field transferred int */
+#define VINO_CTRL_B_FIFO_INT           (1<<5)  /* FIFO overflow int */
+#define VINO_CTRL_B_EOD_INT            (1<<6)  /* End of desc table int */
+#define VINO_CTRL_B_INT                        (VINO_CTRL_B_EOF_INT | \
+                                        VINO_CTRL_B_FIFO_INT | \
+                                        VINO_CTRL_B_EOD_INT)
 #define VINO_CTRL_A_DMA_ENBL           (1<<7)
 #define VINO_CTRL_A_INTERLEAVE_ENBL    (1<<8)
 #define VINO_CTRL_A_SYNC_ENBL          (1<<9)
@@ -104,18 +111,18 @@
        u32 _pad_control;
        volatile u32 control;
 
-#define VINO_INTSTAT_A_FIELD_TRANS     (1<<0)  /* Field transferred int */
-#define VINO_INTSTAT_A_FIFO_OF         (1<<1)  /* FIFO overflow int */
-#define VINO_INTSTAT_A_END_DESC_TBL    (1<<2)  /* End of desc table int */
-#define VINO_INTSTAT_A                 (VINO_INTSTAT_A_FIELD_TRANS | \
-                                        VINO_INTSTAT_A_FIFO_OF | \
-                                        VINO_INTSTAT_A_END_DESC_TBL)
-#define VINO_INTSTAT_B_FIELD_TRANS     (1<<3)  /* Field transferred int */
-#define VINO_INTSTAT_B_FIFO_OF         (1<<4)  /* FIFO overflow int */
-#define VINO_INTSTAT_B_END_DESC_TBL    (1<<5)  /* End of desc table int */
-#define VINO_INTSTAT_B                 (VINO_INTSTAT_B_FIELD_TRANS | \
-                                        VINO_INTSTAT_B_FIFO_OF | \
-                                        VINO_INTSTAT_B_END_DESC_TBL)
+#define VINO_INTSTAT_A_EOF             (1<<0)  /* Field transferred int */
+#define VINO_INTSTAT_A_FIFO            (1<<1)  /* FIFO overflow int */
+#define VINO_INTSTAT_A_EOD             (1<<2)  /* End of desc table int */
+#define VINO_INTSTAT_A                 (VINO_INTSTAT_A_EOF | \
+                                        VINO_INTSTAT_A_FIFO | \
+                                        VINO_INTSTAT_A_EOD)
+#define VINO_INTSTAT_B_EOF             (1<<3)  /* Field transferred int */
+#define VINO_INTSTAT_B_FIFO            (1<<4)  /* FIFO overflow int */
+#define VINO_INTSTAT_B_EOD             (1<<5)  /* End of desc table int */
+#define VINO_INTSTAT_B                 (VINO_INTSTAT_B_EOF | \
+                                        VINO_INTSTAT_B_FIFO | \
+                                        VINO_INTSTAT_B_EOD)
        u32 _pad_intr_status;
        volatile u32 intr_status;
 

<Prev in Thread] Current Thread [Next in Thread>