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[PATCH][4/6] led: update Cobalt Qube series front LED support

To: Richard Purdie <rpurdie@rpsys.net>
Subject: [PATCH][4/6] led: update Cobalt Qube series front LED support
From: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Date: Thu, 20 Sep 2007 23:06:56 +0900
Cc: yoichi_yuasa@tripeaks.co.jp, Ralf Baechle <ralf@linux-mips.org>, linux-mips <linux-mips@linux-mips.org>
In-reply-to: <20070920230513.1dbb1d6d.yoichi_yuasa@tripeaks.co.jp>
Organization: TriPeaks Corporation
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20070920230204.0ad15513.yoichi_yuasa@tripeaks.co.jp> <20070920230322.6600dd83.yoichi_yuasa@tripeaks.co.jp> <20070920230513.1dbb1d6d.yoichi_yuasa@tripeaks.co.jp>
Sender: linux-mips-bounce@linux-mips.org
Update Cobalt Qube series front LED support.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>

diff -pruN -X mips/Documentation/dontdiff 
mips-orig/drivers/leds/leds-cobalt-qube.c mips/drivers/leds/leds-cobalt-qube.c
--- mips-orig/drivers/leds/leds-cobalt-qube.c   2007-09-14 11:16:22.397075500 
+0900
+++ mips/drivers/leds/leds-cobalt-qube.c        2007-09-14 11:38:52.797470250 
+0900
@@ -3,40 +3,100 @@
  *
  * Control the Cobalt Qube series front LED
  */
-
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/leds.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
 #include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/leds.h>
-#include <asm/mach-cobalt/cobalt.h>
 
-static void cobalt_led_set(struct led_classdev *led_cdev, enum led_brightness 
brightness)
+#include <asm/io.h>
+
+#define LED_FRONT_LEFT 0x01
+#define LED_FRONT_RIGHT        0x02
+
+static void __iomem *led_port;
+static u8 led_value;
+
+static void qube_front_led_set(struct led_classdev *led_cdev,
+                               enum led_brightness brightness)
 {
        if (brightness)
-               COBALT_LED_PORT = COBALT_LED_BAR_LEFT | COBALT_LED_BAR_RIGHT;
+               led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
        else
-               COBALT_LED_PORT = 0;
+               led_value = ~(LED_FRONT_LEFT | LED_FRONT_RIGHT);
+       writeb(led_value, led_port);
+}
+
+static struct led_classdev qube_front_led = {
+       .name                   = "qube-front",
+       .brightness             = LED_FULL,
+       .brightness_set         = qube_front_led_set,
+       .default_trigger        = "ide-disk",
+};
+
+static int __devinit cobalt_qube_led_probe(struct platform_device *pdev)
+{
+       struct resource *res;
+       int retval;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res)
+               return -EBUSY;
+
+       led_port = ioremap(res->start, res->end - res->start + 1);
+       if (!led_port)
+               return -ENOMEM;
+
+       led_value = LED_FRONT_LEFT | LED_FRONT_RIGHT;
+       writeb(led_value, led_port);
+
+       retval = led_classdev_register(&pdev->dev, &qube_front_led);
+       if (retval)
+               goto err_iounmap;
+
+       return 0;
+
+err_iounmap:
+       iounmap(led_port);
+       led_port = NULL;
+
+       return retval;
+}
+
+static int __devexit cobalt_qube_led_remove(struct platform_device *pdev)
+{
+       led_classdev_unregister(&qube_front_led);
+
+       if (led_port) {
+               iounmap(led_port);
+               led_port = NULL;
+       }
+
+       return 0;
 }
 
-static struct led_classdev cobalt_led = {
-       .name = "cobalt-front-led",
-       .brightness_set = cobalt_led_set,
-       .default_trigger = "ide-disk",
+static struct platform_driver cobalt_qube_led_driver = {
+       .probe  = cobalt_qube_led_probe,
+       .remove = __devexit_p(cobalt_qube_led_remove),
+       .driver = {
+               .name   = "Cobalt Qube LEDs",
+               .owner  = THIS_MODULE,
+       },
 };
 
-static int __init cobalt_led_init(void)
+static int __init cobalt_qube_led_init(void)
 {
-       return led_classdev_register(NULL, &cobalt_led);
+       return platform_driver_register(&cobalt_qube_led_driver);
 }
 
-static void __exit cobalt_led_exit(void)
+static void __exit cobalt_qube_led_exit(void)
 {
-       led_classdev_unregister(&cobalt_led);
+       platform_driver_unregister(&cobalt_qube_led_driver);
 }
 
-module_init(cobalt_led_init);
-module_exit(cobalt_led_exit);
+module_init(cobalt_qube_led_init);
+module_exit(cobalt_qube_led_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Front LED support for Cobalt Qube series");

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