diff options
author | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2007-05-20 20:09:52 +0000 |
---|---|---|
committer | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2007-05-20 20:09:52 +0000 |
commit | 26af02c4263529521f250c4e199ffa5ad78894b9 (patch) | |
tree | fabd9b976f3ed311137607e9f999346982009e0b /target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c | |
parent | 2641c80c8d6ca77bcf651a76d97b1d7d565de215 (diff) |
Split the led driver
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7290 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c')
-rw-r--r-- | target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c b/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c new file mode 100644 index 000000000..86615f46b --- /dev/null +++ b/target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c @@ -0,0 +1,116 @@ +/* + * LED driver for MTX-1 boards + * + * Copyright 2007 Florian Fainelli <florian@openwrt.org> + * + * 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 <linux/err.h> +#include <asm/mach-au1x00/au1000.h> + +static struct platform_device *pdev; + +static void mtx1_green_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) +{ + /* The power LED cannot be controlled the same way as for the Status LED */ + if (brightness) { + au_writel( 0x18000800, GPIO2_OUTPUT ); + } else { + au_writel( 0x18000000, GPIO2_OUTPUT); + } +} + +static void mtx1_red_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) +{ + /* We store GPIO address (originally address - 200) in the "flags" field*/ + unsigned long pinmask = 1 << led_cdev->flags; + if (brightness) { + au_writel((pinmask << 16) | pinmask, GPIO2_OUTPUT); + } else { + au_writel((pinmask << 16) | 0, GPIO2_OUTPUT); + } +} + +static struct led_classdev mtx1_green_led = { + .name = "mtx1:green", + .brightness_set = mtx1_green_led_set, +}; + +static struct led_classdev mtx1_red_led = { + .name = "mtx1:red", + .flags = 12, + .brightness_set = mtx1_red_led_set, + .default_trigger = "ide-disk", +}; + +static int mtx1_leds_probe(struct platform_device *pdev) +{ + int ret; + + ret = led_classdev_register(&pdev->dev, &mtx1_green_led); + if (ret < 0) + goto out; + + ret = led_classdev_register(&pdev->dev, &mtx1_red_led); + if (ret < 0) + led_classdev_unregister(&mtx1_green_led); + +out: + return ret; +} + +static int mtx1_leds_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&mtx1_green_led); + led_classdev_unregister(&mtx1_red_led); + return 0; +} + +static struct platform_driver mtx1_leds_driver = { + .probe = mtx1_leds_probe, + .remove = mtx1_leds_remove, + .driver = { + .name = "mtx1-leds", + } +}; + +static int __init mtx1_leds_init(void) +{ + int ret; + + ret = platform_driver_register(&mtx1_leds_driver); + if (ret < 0) + goto out; + + pdev = platform_device_register_simple("mtx1-leds", -1, NULL, 0); + if (IS_ERR(pdev)) { + ret = PTR_ERR(pdev); + platform_driver_unregister(&mtx1_leds_driver); + goto out; + } + +out: + return ret; + +} + +static void __exit mtx1_leds_exit(void) +{ + platform_device_unregister(pdev); + platform_driver_unregister(&mtx1_leds_driver); +} + +module_init(mtx1_leds_init); +module_exit(mtx1_leds_exit); + +MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); +MODULE_DESCRIPTION("MTX-1 LED driver"); +MODULE_LICENSE("GPL"); |