[PATCH] LED: add device support for tosa

Adds LED drivers for LEDs found on the Sharp Zaurus c6000 model (tosa).

Signed-off-by: Dirk Opfer <dirk@opfer-online.de>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 148 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 66ec71756d0..76c0e7f0a21 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -251,10 +251,19 @@ static struct platform_device tosakbd_device = {
 	.id		= -1,
 };
 
+/*
+ * Tosa LEDs
+ */
+static struct platform_device tosaled_device = {
+    .name   = "tosa-led",
+    .id     = -1,
+};
+
 static struct platform_device *devices[] __initdata = {
 	&tosascoop_device,
 	&tosascoop_jc_device,
 	&tosakbd_device,
+	&tosaled_device,
 };
 
 static void __init tosa_init(void)
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index d9e2f9853b9..64dcdd3185c 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -52,6 +52,13 @@ config LEDS_IXP4XX
 	  particular board must have LEDs and they must be connected
 	  to the GPIO lines.  If unsure, say Y.
 
+config LEDS_TOSA
+	tristate "LED Support for the Sharp SL-6000 series"
+	depends LEDS_CLASS && PXA_SHARPSL
+	help
+	  This option enables support for the LEDs on Sharp Zaurus
+	  SL-6000 series.
+
 config LEDS_TRIGGER_TIMER
 	tristate "LED Timer Trigger"
 	depends LEDS_TRIGGERS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index b1187c0b36c..9d2930f89d0 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_LEDS_CORGI)		+= leds-corgi.o
 obj-$(CONFIG_LEDS_LOCOMO)		+= leds-locomo.o
 obj-$(CONFIG_LEDS_SPITZ)		+= leds-spitz.o
 obj-$(CONFIG_LEDS_IXP4XX)		+= leds-ixp4xx-gpio.o
+obj-$(CONFIG_LEDS_TOSA)			+= leds-tosa.o
 
 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o
diff --git a/drivers/leds/leds-tosa.c b/drivers/leds/leds-tosa.c
new file mode 100644
index 00000000000..c9e8cc1ec48
--- /dev/null
+++ b/drivers/leds/leds-tosa.c
@@ -0,0 +1,131 @@
+/*
+ * LED Triggers Core
+ *
+ * Copyright 2005 Dirk Opfer
+ *
+ * Author: Dirk Opfer <Dirk@Opfer-Online.de>
+ *	based on spitz.c
+ *
+ * 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/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/hardware/scoop.h>
+#include <asm/mach-types.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/tosa.h>
+
+static void tosaled_amber_set(struct led_classdev *led_cdev,
+				enum led_brightness value)
+{
+	if (value)
+		set_scoop_gpio(&tosascoop_jc_device.dev,
+				TOSA_SCOOP_JC_CHRG_ERR_LED);
+	else
+		reset_scoop_gpio(&tosascoop_jc_device.dev,
+				TOSA_SCOOP_JC_CHRG_ERR_LED);
+}
+
+static void tosaled_green_set(struct led_classdev *led_cdev,
+				enum led_brightness value)
+{
+	if (value)
+		set_scoop_gpio(&tosascoop_jc_device.dev,
+				TOSA_SCOOP_JC_NOTE_LED);
+	else
+		reset_scoop_gpio(&tosascoop_jc_device.dev,
+				TOSA_SCOOP_JC_NOTE_LED);
+}
+
+static struct led_classdev tosa_amber_led = {
+	.name			= "tosa:amber",
+	.default_trigger	= "sharpsl-charge",
+	.brightness_set		= tosaled_amber_set,
+};
+
+static struct led_classdev tosa_green_led = {
+	.name			= "tosa:green",
+	.default_trigger	= "nand-disk",
+	.brightness_set		= tosaled_green_set,
+};
+
+#ifdef CONFIG_PM
+static int tosaled_suspend(struct platform_device *dev, pm_message_t state)
+{
+#ifdef CONFIG_LEDS_TRIGGERS
+	if (tosa_amber_led.trigger && strcmp(tosa_amber_led.trigger->name,
+						"sharpsl-charge"))
+#endif
+		led_classdev_suspend(&tosa_amber_led);
+	led_classdev_suspend(&tosa_green_led);
+	return 0;
+}
+
+static int tosaled_resume(struct platform_device *dev)
+{
+	led_classdev_resume(&tosa_amber_led);
+	led_classdev_resume(&tosa_green_led);
+	return 0;
+}
+#else
+#define tosaled_suspend NULL
+#define tosaled_resume NULL
+#endif
+
+static int tosaled_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = led_classdev_register(&pdev->dev, &tosa_amber_led);
+	if (ret < 0)
+		return ret;
+
+	ret = led_classdev_register(&pdev->dev, &tosa_green_led);
+	if (ret < 0)
+		led_classdev_unregister(&tosa_amber_led);
+
+	return ret;
+}
+
+static int tosaled_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&tosa_amber_led);
+	led_classdev_unregister(&tosa_green_led);
+
+	return 0;
+}
+
+static struct platform_driver tosaled_driver = {
+	.probe		= tosaled_probe,
+	.remove		= tosaled_remove,
+	.suspend	= tosaled_suspend,
+	.resume		= tosaled_resume,
+	.driver		= {
+		.name		= "tosa-led",
+	},
+};
+
+static int __init tosaled_init(void)
+{
+	return platform_driver_register(&tosaled_driver);
+}
+
+static void __exit tosaled_exit(void)
+{
+ 	platform_driver_unregister(&tosaled_driver);
+}
+
+module_init(tosaled_init);
+module_exit(tosaled_exit);
+
+MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>");
+MODULE_DESCRIPTION("Tosa LED driver");
+MODULE_LICENSE("GPL");