[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>

1 files changed, 131 insertions, 0 deletions

diff --git a/drivers/leds/leds-tosa.c b/drivers/leds/leds-tosa.c
new file mode 100644
index 000000000000..c9e8cc1ec481
--- /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");