diff options
Diffstat (limited to 'target/linux/ixp4xx/patches-3.3/295-latch_led_driver.patch')
| -rw-r--r-- | target/linux/ixp4xx/patches-3.3/295-latch_led_driver.patch | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/target/linux/ixp4xx/patches-3.3/295-latch_led_driver.patch b/target/linux/ixp4xx/patches-3.3/295-latch_led_driver.patch deleted file mode 100644 index 3ed6ec5..0000000 --- a/target/linux/ixp4xx/patches-3.3/295-latch_led_driver.patch +++ /dev/null @@ -1,202 +0,0 @@ ---- a/drivers/leds/Kconfig -+++ b/drivers/leds/Kconfig -@@ -204,6 +204,13 @@ config LEDS_LP5523 - Driver provides direct control via LED class and interface for - programming the engines. - -+config LEDS_LATCH -+ tristate "LED Support for Memory Latched LEDs" -+ depends on LEDS_CLASS -+ help -+ -- To Do -- -+ -+ - config LEDS_CLEVO_MAIL - tristate "Mail LED on Clevo notebook" - depends on LEDS_CLASS ---- /dev/null -+++ b/drivers/leds/leds-latch.c -@@ -0,0 +1,152 @@ -+/* -+ * LEDs driver for Memory Latched Devices -+ * -+ * Copyright (C) 2008 Gateworks Corp. -+ * Chris Lang <clang@gateworks.com> -+ * -+ * 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/slab.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/leds.h> -+#include <linux/workqueue.h> -+#include <asm/io.h> -+#include <linux/spinlock.h> -+#include <linux/slab.h> -+#include <linux/module.h> -+#include <linux/export.h> -+ -+static unsigned int mem_keep = 0xFF; -+static spinlock_t mem_lock; -+static unsigned char *iobase; -+ -+struct latch_led_data { -+ struct led_classdev cdev; -+ struct work_struct work; -+ u8 new_level; -+ u8 bit; -+ void (*set_led)(u8 bit, enum led_brightness value); -+}; -+ -+static void latch_set_led(u8 bit, enum led_brightness value) -+{ -+ if (value == LED_OFF) -+ mem_keep |= (0x1 << bit); -+ else -+ mem_keep &= ~(0x1 << bit); -+ -+ writeb(mem_keep, iobase); -+} -+ -+static void latch_led_set(struct led_classdev *led_cdev, -+ enum led_brightness value) -+{ -+ struct latch_led_data *led_dat = -+ container_of(led_cdev, struct latch_led_data, cdev); -+ -+ raw_spin_lock(mem_lock); -+ -+ led_dat->set_led(led_dat->bit, value); -+ -+ raw_spin_unlock(mem_lock); -+} -+ -+static int latch_led_probe(struct platform_device *pdev) -+{ -+ struct latch_led_platform_data *pdata = pdev->dev.platform_data; -+ struct latch_led *cur_led; -+ struct latch_led_data *leds_data, *led_dat; -+ int i, ret = 0; -+ -+ if (!pdata) -+ return -EBUSY; -+ -+ leds_data = kzalloc(sizeof(struct latch_led_data) * pdata->num_leds, -+ GFP_KERNEL); -+ if (!leds_data) -+ return -ENOMEM; -+ -+ for (i = 0; i < pdata->num_leds; i++) { -+ cur_led = &pdata->leds[i]; -+ led_dat = &leds_data[i]; -+ -+ led_dat->cdev.name = cur_led->name; -+ led_dat->cdev.default_trigger = cur_led->default_trigger; -+ led_dat->cdev.brightness_set = latch_led_set; -+ led_dat->cdev.brightness = LED_OFF; -+ led_dat->bit = cur_led->bit; -+ led_dat->set_led = pdata->set_led ? pdata->set_led : latch_set_led; -+ -+ ret = led_classdev_register(&pdev->dev, &led_dat->cdev); -+ if (ret < 0) { -+ goto err; -+ } -+ } -+ -+ if (!pdata->set_led) { -+ iobase = ioremap_nocache(pdata->mem, 0x1000); -+ writeb(0xFF, iobase); -+ } -+ platform_set_drvdata(pdev, leds_data); -+ -+ return 0; -+ -+err: -+ if (i > 0) { -+ for (i = i - 1; i >= 0; i--) { -+ led_classdev_unregister(&leds_data[i].cdev); -+ } -+ } -+ -+ kfree(leds_data); -+ -+ return ret; -+} -+ -+static int __devexit latch_led_remove(struct platform_device *pdev) -+{ -+ int i; -+ struct latch_led_platform_data *pdata = pdev->dev.platform_data; -+ struct latch_led_data *leds_data; -+ -+ leds_data = platform_get_drvdata(pdev); -+ -+ for (i = 0; i < pdata->num_leds; i++) { -+ led_classdev_unregister(&leds_data[i].cdev); -+ cancel_work_sync(&leds_data[i].work); -+ } -+ -+ kfree(leds_data); -+ -+ return 0; -+} -+ -+static struct platform_driver latch_led_driver = { -+ .probe = latch_led_probe, -+ .remove = __devexit_p(latch_led_remove), -+ .driver = { -+ .name = "leds-latch", -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+static int __init latch_led_init(void) -+{ -+ return platform_driver_register(&latch_led_driver); -+} -+ -+static void __exit latch_led_exit(void) -+{ -+ platform_driver_unregister(&latch_led_driver); -+} -+ -+module_init(latch_led_init); -+module_exit(latch_led_exit); -+ -+MODULE_AUTHOR("Chris Lang <clang@gateworks.com>"); -+MODULE_DESCRIPTION("Latch LED driver"); ---- a/drivers/leds/Makefile -+++ b/drivers/leds/Makefile -@@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunf - obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o - obj-$(CONFIG_LEDS_GPIO_REGISTER) += leds-gpio-register.o - obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o -+obj-$(CONFIG_LEDS_LATCH) += leds-latch.o - obj-$(CONFIG_LEDS_LP3944) += leds-lp3944.o - obj-$(CONFIG_LEDS_LP5521) += leds-lp5521.o - obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o ---- a/include/linux/leds.h -+++ b/include/linux/leds.h -@@ -210,4 +210,18 @@ struct gpio_led_platform_data { - struct platform_device *gpio_led_register_device( - int id, const struct gpio_led_platform_data *pdata); - -+/* For the leds-latch driver */ -+struct latch_led { -+ const char *name; -+ char *default_trigger; -+ unsigned bit; -+}; -+ -+struct latch_led_platform_data { -+ int num_leds; -+ u32 mem; -+ struct latch_led *leds; -+ void (*set_led)(u8 bit, enum led_brightness value); -+}; -+ - #endif /* __LINUX_LEDS_H_INCLUDED */ |