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authorJonathan McDowell <noodles@earth.li>2006-06-23 13:05:33 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 18:43:05 +0400
commit9becde79d2c5e382d955167c07017b5e34b142f0 (patch)
treefb2f84658cf9a8d7c4089262bd545fa809ef84da /drivers/leds/leds-ams-delta.c
parent83d4e6e7fba0b2a01092f0cf14ba2e33bd1253e9 (diff)
downloadlinux-9becde79d2c5e382d955167c07017b5e34b142f0.tar.xz
[PATCH] leds: Amstrad Delta LED support
Use the new LED infrastructure to support the 6 LEDs present on the Amstrad Delta. [akpm@osdl.org: cleanup] Signed-off-by: Jonathan McDowell <noodles@earth.li> Ackde-by: Richard Purdie <rpurdie@rpsys.net> Cc: Ben Dooks <ben@fluff.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/leds/leds-ams-delta.c')
-rw-r--r--drivers/leds/leds-ams-delta.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/drivers/leds/leds-ams-delta.c b/drivers/leds/leds-ams-delta.c
new file mode 100644
index 000000000000..e9f06116c4d7
--- /dev/null
+++ b/drivers/leds/leds-ams-delta.c
@@ -0,0 +1,162 @@
+/*
+ * LEDs driver for Amstrad Delta (E3)
+ *
+ * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
+ *
+ * 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/arch/board-ams-delta.h>
+
+/*
+ * Our context
+ */
+struct ams_delta_led {
+ struct led_classdev cdev;
+ u8 bitmask;
+};
+
+static void ams_delta_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct ams_delta_led *led_dev =
+ container_of(led_cdev, struct ams_delta_led, cdev);
+
+ if (value)
+ ams_delta_latch1_write(led_dev->bitmask, led_dev->bitmask);
+ else
+ ams_delta_latch1_write(led_dev->bitmask, 0);
+}
+
+static struct ams_delta_led ams_delta_leds[] = {
+ {
+ .cdev = {
+ .name = "ams-delta:camera",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_CAMERA,
+ },
+ {
+ .cdev = {
+ .name = "ams-delta:advert",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_ADVERT,
+ },
+ {
+ .cdev = {
+ .name = "ams-delta:email",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_EMAIL,
+ },
+ {
+ .cdev = {
+ .name = "ams-delta:handsfree",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_HANDSFREE,
+ },
+ {
+ .cdev = {
+ .name = "ams-delta:voicemail",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_VOICEMAIL,
+ },
+ {
+ .cdev = {
+ .name = "ams-delta:voice",
+ .brightness_set = ams_delta_led_set,
+ },
+ .bitmask = AMS_DELTA_LATCH1_LED_VOICE,
+ },
+};
+
+#ifdef CONFIG_PM
+static int ams_delta_led_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
+ led_classdev_suspend(&ams_delta_leds[i].cdev);
+
+ return 0;
+}
+
+static int ams_delta_led_resume(struct platform_device *dev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
+ led_classdev_resume(&ams_delta_leds[i].cdev);
+
+ return 0;
+}
+#else
+#define ams_delta_led_suspend NULL
+#define ams_delta_led_resume NULL
+#endif
+
+static int ams_delta_led_probe(struct platform_device *pdev)
+{
+ int i;
+ int ret;
+
+ for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(ams_delta_leds); i++) {
+ ret = led_classdev_register(&pdev->dev,
+ &ams_delta_leds[i].cdev);
+ }
+
+ if (ret < 0 && i > 1) {
+ for (i = i - 2; i >= 0; i--)
+ led_classdev_unregister(&ams_delta_leds[i].cdev);
+ }
+
+ return ret;
+}
+
+static int ams_delta_led_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = ARRAY_SIZE(ams_delta_leds) - 1; i >= 0; i--)
+ led_classdev_unregister(&ams_delta_leds[i].cdev);
+
+ return 0;
+}
+
+static struct platform_driver ams_delta_led_driver = {
+ .probe = ams_delta_led_probe,
+ .remove = ams_delta_led_remove,
+ .suspend = ams_delta_led_suspend,
+ .resume = ams_delta_led_resume,
+ .driver = {
+ .name = "ams-delta-led",
+ },
+};
+
+static int __init ams_delta_led_init(void)
+{
+ return platform_driver_register(&ams_delta_led_driver);
+}
+
+static void __exit ams_delta_led_exit(void)
+{
+ return platform_driver_unregister(&ams_delta_led_driver);
+}
+
+module_init(ams_delta_led_init);
+module_exit(ams_delta_led_exit);
+
+MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
+MODULE_DESCRIPTION("Amstrad Delta LED driver");
+MODULE_LICENSE("GPL");