[PATCH 7/11] LED: Add LED device support for LOCOMO devices

Adds an LED driver for LEDs exported by the Sharp LOCOMO chip as found on
some models of Sharp Zaurus.

Signed-off-by: Richard Purdie <rpurdie@xxxxxxxxx>

Index: linux-2.6.15/drivers/leds/Kconfig
===================================================================
--- linux-2.6.15.orig/drivers/leds/Kconfig 2006-01-29 16:04:22.000000000 +0000
+++ linux-2.6.15/drivers/leds/Kconfig 2006-01-29 16:04:23.000000000 +0000
@@ -29,6 +29,13 @@
This option enables support for the LEDs on Sharp Zaurus
SL-C7x0 series (C700, C750, C760, C860).

+config LEDS_LOCOMO
+ tristate "LED Support for Locomo device"
+ depends LEDS_CLASS && SHARP_LOCOMO
+ help
+ This option enables support for the LEDs on Sharp Locomo.
+ Zaurus models SL-5500 and SL-5600.
+
config LEDS_SPITZ
tristate "LED Support for the Sharp SL-Cxx00 series"
depends LEDS_CLASS && PXA_SHARP_Cxx00
Index: linux-2.6.15/drivers/leds/Makefile
===================================================================
--- linux-2.6.15.orig/drivers/leds/Makefile 2006-01-29 16:04:22.000000000 +0000
+++ linux-2.6.15/drivers/leds/Makefile 2006-01-29 16:04:23.000000000 +0000
@@ -6,6 +6,7 @@

# LED Platform Drivers
obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o
+obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o

# LED Triggers
Index: linux-2.6.15/drivers/leds/leds-locomo.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.15/drivers/leds/leds-locomo.c 2006-01-29 16:09:46.000000000 +0000
@@ -0,0 +1,91 @@
+/*
+ * linux/drivers/leds/locomo.c
+ *
+ * Copyright (C) 2005 John Lenz <lenz@xxxxxxxxxxx>
+ *
+ * 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/device.h>
+#include <linux/leds.h>
+
+#include <asm/hardware.h>
+#include <asm/hardware/locomo.h>
+
+void locomoled_brightness_set(struct led_device *led_dev, enum led_brightnessint value, int offset)
+{
+ struct locomo_dev *locomo_dev = LOCOMO_DEV(led_dev->class_dev->dev);
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (value)
+ locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
+ else
+ locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
+ local_irq_restore(flags);
+}
+
+void locomoled_brightness_set0(struct led_device *led_dev, enum led_brightness value)
+{
+ locomoled_brightness_set(led_dev, value, LOCOMO_LPT0);
+}
+
+void locomoled_brightness_set1(struct led_device *led_dev, enum led_brightness value)
+{
+ locomoled_brightness_set(led_dev, value, LOCOMO_LPT1);
+}
+
+static struct led_device locomo_led0 = {
+ .name = "locomo:amber",
+ .brightness_set = locomoled_brightness_set0,
+};
+
+static struct led_device locomo_led1 = {
+ .name = "locomo:green",
+ .brightness_set = locomoled_brightness_set1,
+};
+
+static int locomoled_probe(struct locomo_dev *ldev)
+{
+ int ret;
+
+ ret = led_device_register(&ldev->dev, &locomo_led0);
+ if (ret < 0)
+ return ret;
+
+ ret = led_device_register(&ldev->dev, &locomo_led1);
+ if (ret < 0)
+ led_device_unregister(&locomo_led0);
+
+ return ret;
+}
+
+static int locomoled_remove(struct locomo_dev *dev)
+{
+ led_device_unregister(&locomo_led0);
+ led_device_unregister(&locomo_led1);
+ return 0;
+}
+
+static struct locomo_driver locomoled_driver = {
+ .drv = {
+ .name = "locomoled"
+ },
+ .devid = LOCOMO_DEVID_LED,
+ .probe = locomoled_probe,
+ .remove = locomoled_remove,
+};
+
+static int __init locomoled_init(void) {
+ return locomo_driver_register(&locomoled_driver);
+}
+module_init(locomoled_init);
+
+MODULE_AUTHOR("John Lenz <lenz@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Locomo LED driver");
+MODULE_LICENSE("GPL");


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