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[PATCH][2.4] Update NEC VRC4171's base functions for VR4100 series

To: Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH][2.4] Update NEC VRC4171's base functions for VR4100 series
From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Date: Wed, 14 Jan 2004 00:57:13 +0900
Cc: yuasa@hh.iij4u.or.jp, linux-mips <linux-mips@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hello Ralf,

I updated the patch for VRC4171's base functions.
The VRC4171 is companion chip for NEC VR4111 and VR4121.

This patch exists for linux_2_4 tag of linux-mips.org CVS.
Please apply this patch.

Yoichi

diff -urN -X dontdiff linux-orig/arch/mips/config-shared.in 
linux/arch/mips/config-shared.in
--- linux-orig/arch/mips/config-shared.in       Sun Jan 11 10:17:13 2004
+++ linux/arch/mips/config-shared.in    Tue Jan 13 23:04:31 2004
@@ -56,6 +56,9 @@
 bool 'Support for Globespan IVR board' CONFIG_MIPS_IVR
 bool 'Support for Hewlett Packard LaserJet board' CONFIG_HP_LASERJET
 bool 'Support for IBM WorkPad z50' CONFIG_IBM_WORKPAD
+if [ "$CONFIG_IBM_WORKPAD" = "y" ]; then
+   tristate '  NEC VRC4171 support' CONFIG_VRC4171
+fi
 bool 'Support for LASAT Networks platforms' CONFIG_LASAT
 if [ "$CONFIG_LASAT" = "y" ]; then
    tristate '  PICVUE LCD display driver' CONFIG_PICVUE
diff -urN -X dontdiff linux-orig/arch/mips/vr41xx/common/Makefile 
linux/arch/mips/vr41xx/common/Makefile
--- linux-orig/arch/mips/vr41xx/common/Makefile Wed Dec  3 01:37:03 2003
+++ linux/arch/mips/vr41xx/common/Makefile      Tue Jan 13 23:04:31 2004
@@ -14,10 +14,11 @@
 
 obj-y := bcu.o cmu.o giu.o icu.o int-handler.o ksyms.o reset.o rtc.o
 
-export-objs := ksyms.o vrc4173.o
+export-objs := ksyms.o vrc4171.o vrc4173.o
 
 obj-$(CONFIG_PCI)              += pciu.o
 obj-$(CONFIG_SERIAL)           += serial.o
+obj-$(CONFIG_VRC4171)          += vrc4171.o
 obj-$(CONFIG_VRC4173)          += vrc4173.o
 obj-$(subst m,y,$(CONFIG_IDE)) += ide.o
 
diff -urN -X dontdiff linux-orig/arch/mips/vr41xx/common/vrc4171.c 
linux/arch/mips/vr41xx/common/vrc4171.c
--- linux-orig/arch/mips/vr41xx/common/vrc4171.c        Thu Jan  1 09:00:00 1970
+++ linux/arch/mips/vr41xx/common/vrc4171.c     Tue Jan 13 23:04:31 2004
@@ -0,0 +1,106 @@
+/*
+ *  vrc4171.c, NEC VRC4171 base driver.
+ *
+ *  Copyright (C) 2003  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/vr41xx/vrc4171.h>
+
+MODULE_DESCRIPTION("NEC VRC4171 base driver");
+MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL_GPL(vrc4171_get_irq_status);
+EXPORT_SYMBOL_GPL(vrc4171_set_multifunction_pin);
+
+#define CONFIGURATION1         0x05fe
+ #define SLOTB_CONFIG          0xc000
+ #define SLOTB_NONE            0x0000
+ #define SLOTB_PCCARD          0x4000
+ #define SLOTB_CF              0x8000
+ #define SLOTB_FLASHROM                0xc000
+
+#define CONFIGURATION2         0x05fc
+#define INTERRUPT_STATUS       0x05fa
+#define PCS_CONTROL            0x05ee
+#define GPIO_DATA              PCS_CONTROL
+#define PCS0_UPPER_START       0x05ec
+#define PCS0_LOWER_START       0x05ea
+#define PCS0_UPPER_STOP                0x05e8
+#define PCS0_LOWER_STOP                0x05e6
+#define PCS1_UPPER_START       0x05e4
+#define PCS1_LOWER_START       0x05e2
+#define PCS1_UPPER_STOP                0x05de
+#define PCS1_LOWER_STOP                0x05dc
+
+#define VRC4171_REGS_BASE      PCS1_LOWER_STOP
+#define VRC4171_REGS_SIZE      0x24
+
+uint16_t vrc4171_get_irq_status(void)
+{
+       return inw(INTERRUPT_STATUS);
+}
+
+void vrc4171_set_multifunction_pin(int config)
+{
+       uint16_t config1;
+
+       config1 = inw(CONFIGURATION1);
+       config1 &= ~SLOTB_CONFIG;
+
+       switch (config) {
+       case SLOTB_IS_NONE:
+               config1 |= SLOTB_NONE;
+               break;
+       case SLOTB_IS_PCCARD:
+               config1 |= SLOTB_PCCARD;
+               break;
+       case SLOTB_IS_CF:
+               config1 |= SLOTB_CF;
+               break;
+       case SLOTB_IS_FLASHROM:
+               config1 |= SLOTB_FLASHROM;
+               break;
+       default:
+               break;
+       }
+
+       outw(config1, CONFIGURATION1);
+}
+
+static int __devinit vrc4171_init(void)
+{
+       if (request_region(VRC4171_REGS_BASE, VRC4171_REGS_SIZE, "NEC VRC4171") 
== NULL)
+               return -EBUSY;
+
+       printk(KERN_INFO "NEC VRC4171 base driver\n");
+
+       return 0;
+}
+
+static void __devexit vrc4171_exit(void)
+{
+       release_region(VRC4171_REGS_BASE, VRC4171_REGS_SIZE);
+}
+
+module_init(vrc4171_init);
+module_exit(vrc4171_exit);
diff -urN -X dontdiff linux-orig/include/asm-mips/vr41xx/vrc4171.h 
linux/include/asm-mips/vr41xx/vrc4171.h
--- linux-orig/include/asm-mips/vr41xx/vrc4171.h        Thu Jan  1 09:00:00 1970
+++ linux/include/asm-mips/vr41xx/vrc4171.h     Tue Jan 13 23:04:31 2004
@@ -0,0 +1,43 @@
+/*
+ *  vrc4171.h, Include file for NEC VRC4171.
+ *
+ *  Copyright (C) 2003  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __NEC_VRC4171_H 
+#define __NEC_VRC4171_H 
+
+/*
+ * Configuration 1
+ */
+enum {
+       SLOTB_IS_NONE,       
+       SLOTB_IS_PCCARD,
+       SLOTB_IS_CF,
+       SLOTB_IS_FLASHROM
+};
+
+extern void vrc4171_set_multifunction_pin(int config);
+
+/*
+ * Interrupt Status Mask
+ */
+#define IRQ_A  0x02
+#define IRQ_B  0x04
+
+extern uint16_t vrc4171_get_irq_status(void);
+
+#endif /* __NEC_VRC4171_H */

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