leds: Add HP Jornada 6xx driver
Kristoffer Ericson [Thu, 7 Feb 2008 10:10:28 +0000 (10:10 +0000)]
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
drivers/leds/Makefile
drivers/leds/leds-hp6xx.c [new file with mode: 0644]

index 1dfe5bb..851a3b0 100644 (file)
@@ -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
index 1ec4555..bc6afc8 100644 (file)
@@ -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
diff --git a/drivers/leds/leds-hp6xx.c b/drivers/leds/leds-hp6xx.c
new file mode 100644 (file)
index 0000000..82d4ec3
--- /dev/null
@@ -0,0 +1,120 @@
+/*
+ * 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");