leds: Add HP Jornada 6xx driver

Add support for the LEDs on the HP Jornada 620/660/680/690 devices.
Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

drivers/leds/Kconfig

@@ -91,6 +91,13 @@ config LEDS_COBALT_RAQ
 	help
 	  This option enables support for the Cobalt Raq series LEDs.
 
+config LEDS_HP6XX
+	tristate "LED Support for the HP Jornada 6xx"
+	depends on LEDS_CLASS && SH_HP6XX
+	help
+	  This option enables led support for the handheld
+	  HP Jornada 620/660/680/690.
+
 config LEDS_GPIO
 	tristate "LED Support for GPIO connected LEDs"
 	depends on LEDS_CLASS && GENERIC_GPIO

drivers/leds/Makefile

@@ -19,6 +19,7 @@ obj-$(CONFIG_LEDS_COBALT_RAQ)		+= leds-cobalt-raq.o
 obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
 obj-$(CONFIG_LEDS_CM_X270)              += leds-cm-x270.o
 obj-$(CONFIG_LEDS_CLEVO_MAIL)		+= leds-clevo-mail.o
+obj-$(CONFIG_LEDS_HP6XX)		+= leds-hp6xx.o
 
 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o

drivers/leds/leds-hp6xx.c

+/*
+ * LED Triggers Core
+ * For the HP Jornada 620/660/680/690 handhelds
+ *
+ * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
+ *     this driver is based on leds-spitz.c by Richard Purdie.
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/hd64461.h>
+#include <asm/hp6xx.h>
+
+static void hp6xxled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	u8 v8;
+
+	v8 = inb(PKDR);
+	if (value)
+		outb(v8 & (~PKDR_LED_GREEN), PKDR);
+	else
+		outb(v8 | PKDR_LED_GREEN, PKDR);
+}
+
+static void hp6xxled_red_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	u16 v16;
+
+	v16 = inw(HD64461_GPBDR);
+	if (value)
+		outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
+	else
+		outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
+}
+
+static struct led_classdev hp6xx_red_led = {
+	.name			= "hp6xx:red",
+	.default_trigger	= "hp6xx-charge",
+	.brightness_set		= hp6xxled_red_set,
+};
+
+static struct led_classdev hp6xx_green_led = {
+	.name			= "hp6xx:green",
+	.default_trigger	= "ide-disk",
+	.brightness_set		= hp6xxled_green_set,
+};
+
+#ifdef CONFIG_PM
+static int hp6xxled_suspend(struct platform_device *dev, pm_message_t state)
+{
+	led_classdev_suspend(&hp6xx_red_led);
+	led_classdev_suspend(&hp6xx_green_led);
+	return 0;
+}
+
+static int hp6xxled_resume(struct platform_device *dev)
+{
+	led_classdev_resume(&hp6xx_red_led);
+	led_classdev_resume(&hp6xx_green_led);
+	return 0;
+}
+#endif
+
+static int hp6xxled_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = led_classdev_register(&pdev->dev, &hp6xx_red_led);
+	if (ret < 0)
+		return ret;
+
+	ret = led_classdev_register(&pdev->dev, &hp6xx_green_led);
+	if (ret < 0)
+		led_classdev_unregister(&hp6xx_red_led);
+
+	return ret;
+}
+
+static int hp6xxled_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&hp6xx_red_led);
+	led_classdev_unregister(&hp6xx_green_led);
+
+	return 0;
+}
+
+static struct platform_driver hp6xxled_driver = {
+	.probe		= hp6xxled_probe,
+	.remove		= hp6xxled_remove,
+#ifdef CONFIG_PM
+	.suspend	= hp6xxled_suspend,
+	.resume		= hp6xxled_resume,
+#endif
+	.driver		= {
+		.name		= "hp6xx-led",
+	},
+};
+
+static int __init hp6xxled_init(void)
+{
+	return platform_driver_register(&hp6xxled_driver);
+}
+
+static void __exit hp6xxled_exit(void)
+{
+	platform_driver_unregister(&hp6xxled_driver);
+}
+
+module_init(hp6xxled_init);
+module_exit(hp6xxled_exit);
+
+MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
+MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
+MODULE_LICENSE("GPL");