diff options
Diffstat (limited to 'packages/linux/ixp4xx-kernel/2.6.15/95-ixp4xx-leds.patch')
| -rw-r--r-- | packages/linux/ixp4xx-kernel/2.6.15/95-ixp4xx-leds.patch | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/packages/linux/ixp4xx-kernel/2.6.15/95-ixp4xx-leds.patch b/packages/linux/ixp4xx-kernel/2.6.15/95-ixp4xx-leds.patch deleted file mode 100644 index b081519893..0000000000 --- a/packages/linux/ixp4xx-kernel/2.6.15/95-ixp4xx-leds.patch +++ /dev/null @@ -1,260 +0,0 @@ -NEW_LEDS support for ixp4xx boards where LEDs are connected -to the GPIO lines. - -This includes a new generic ixp4xx driver (leds-ixp4xx-gpio.c -name "IXP4XX-GPIO-LED") and a patch to the original leds.h to -make the 'name' field of led_device (const char) - -Signed-off-by: John Bowler <jbowler@acm.org> - ---- linux-2.6.15/drivers/leds/Kconfig 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.15/drivers/leds/Kconfig 1970-01-01 00:00:00.000000000 +0000 -@@ -43,6 +43,15 @@ config LEDS_SPITZ - This option enables support for the LEDs on Sharp Zaurus - SL-Cxx00 series (C1000, C3000, C3100). - -+config LEDS_IXP4XX -+ tristate "LED Support for GPIO connected LEDs on IXP4XX processors" -+ depends LEDS_CLASS && ARCH_IXP4XX -+ help -+ This option enables support for the LEDs connected to GPIO -+ outputs of the Intel IXP4XX processors. To be useful the -+ particular board must have LEDs and they must be connected -+ to the GPIO lines. If unsure, say Y. -+ - config LEDS_TRIGGER_TIMER - tristate "LED Timer Trigger" - depends LEDS_TRIGGERS ---- linux-2.6.15/drivers/leds/Makefile 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.15/drivers/leds/Makefile 1970-01-01 00:00:00.000000000 +0000 -@@ -8,6 +8,7 @@ obj-$(CONFIG_LEDS_TRIGGERS) += led-trig - obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o - obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o - obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o -+obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o - - # LED Triggers - obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o ---- linux-2.6.15/drivers/leds/leds-ixp4xx-gpio.c 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.15/drivers/leds/leds-ixp4xx-gpio.c 1970-01-01 00:00:00.000000000 +0000 -@@ -0,0 +1,209 @@ -+/* -+ * IXP4XX GPIO driver LED driver -+ * -+ * Author: John Bowler <jbowler@acm.org> -+ * -+ * Copyright (c) 2006 John Bowler -+ * -+ * Permission is hereby granted, free of charge, to any -+ * person obtaining a copy of this software and associated -+ * documentation files (the "Software"), to deal in the -+ * Software without restriction, including without -+ * limitation the rights to use, copy, modify, merge, -+ * publish, distribute, sublicense, and/or sell copies of -+ * the Software, and to permit persons to whom the -+ * Software is furnished to do so, subject to the -+ * following conditions: -+ * -+ * The above copyright notice and this permission notice -+ * shall be included in all copies or substantial portions -+ * of the Software. -+ * -+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF -+ * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED -+ * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A -+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT -+ * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR -+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -+ * OTHER DEALINGS IN THE SOFTWARE. -+ * -+ */ -+ -+#include <linux/config.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/spinlock.h> -+#include <linux/leds.h> -+#include <asm/arch/hardware.h> -+ -+extern spinlock_t gpio_lock; -+ -+/* Up to 16 gpio lines are possible. */ -+#define GPIO_MAX 16 -+static struct ixp4xxgpioled_device { -+ struct led_device ancestor; -+ int flags; -+} ixp4xxgpioled_devices[GPIO_MAX]; -+ -+void ixp4xxgpioled_brightness_set(struct led_device *pled, int value) -+{ -+ const struct ixp4xxgpioled_device *const ixp4xx_dev = -+ container_of(pled, struct ixp4xxgpioled_device, ancestor); -+ const u32 gpio_pin = ixp4xx_dev - ixp4xxgpioled_devices; -+ -+ if (gpio_pin < GPIO_MAX && ixp4xx_dev->ancestor.name != 0) { -+ /* Set or clear the 'gpio_pin' bit according to the style -+ * and the required setting (value > 0 == on) -+ */ -+ const int gpio_value = -+ (value > 0) == (ixp4xx_dev->flags != IXP4XX_GPIO_LOW) ? -+ IXP4XX_GPIO_HIGH : IXP4XX_GPIO_LOW; -+ -+ { -+ unsigned long flags; -+ spin_lock_irqsave(&gpio_lock, flags); -+ gpio_line_set(gpio_pin, gpio_value); -+ spin_unlock_irqrestore(&gpio_lock, flags); -+ } -+ } -+} -+ -+/* LEDs are described in resources, the following iterates over the valid -+ * LED resources. -+ */ -+#define for_all_leds(i, pdev) \ -+ for (i=0; i<pdev->num_resources; ++i) \ -+ if (pdev->resource[i].start < GPIO_MAX && \ -+ pdev->resource[i].name != 0) -+ -+/* The following applies 'operation' to each LED from the given platform, -+ * the function always returns 0 to allow tail call elimination. -+ */ -+static int apply_to_all_leds(struct platform_device *pdev, -+ void (*operation)(struct led_device *pled)) { -+ int i; -+ for_all_leds(i, pdev) -+ operation(&ixp4xxgpioled_devices[pdev->resource[i].start].ancestor); -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+static int ixp4xxgpioled_suspend(struct platform_device *pdev, pm_message_t state) -+{ -+ return apply_to_all_leds(pdev, leds_device_suspend); -+} -+ -+static int ixp4xxgpioled_resume(struct platform_device *pdev) -+{ -+ return apply_to_all_leds(pdev, leds_device_resume); -+} -+#endif -+ -+static void ixp4xxgpioled_remove_one_led(struct led_device *pled) { -+ leds_device_unregister(pled); -+ pled->name = 0; -+} -+ -+static int ixp4xxgpioled_remove(struct platform_device *pdev) -+{ -+ return apply_to_all_leds(pdev, ixp4xxgpioled_remove_one_led); -+} -+ -+static int ixp4xxgpioled_probe(struct platform_device *pdev) -+{ -+ /* The board level has to tell the driver where the -+ * LEDs are connected - there is no way to find out -+ * electrically. It must also say whether the GPIO -+ * lines are active high or active low. -+ * -+ * To do this read the num_resources (the number of -+ * LEDs) and the struct resource (the data for each -+ * LED). The name comes from the resource, and it -+ * isn't copied. -+ */ -+ int i; -+ for_all_leds(i, pdev) { -+ const u8 gpio_pin = pdev->resource[i].start; -+ int rc; -+ -+ if (ixp4xxgpioled_devices[gpio_pin].ancestor.name == 0) { -+ unsigned long flags; -+ -+ spin_lock_irqsave(&gpio_lock, flags); -+ gpio_line_config(gpio_pin, IXP4XX_GPIO_OUT); -+ /* The config can, apparently, reset the state, -+ * I suspect the gpio line may be an input and -+ * the config may cause the line to be latched, -+ * so the setting depends on how the LED is -+ * connected to the line (which affects how it -+ * floats if not driven). -+ */ -+ gpio_line_set(gpio_pin, IXP4XX_GPIO_HIGH); -+ spin_unlock_irqrestore(&gpio_lock, flags); -+ -+ ixp4xxgpioled_devices[gpio_pin].flags = -+ pdev->resource[i].flags & IORESOURCE_BITS; -+ -+ ixp4xxgpioled_devices[gpio_pin].ancestor.name = -+ pdev->resource[i].name; -+ -+ /* This is how a board manufacturer makes the LED -+ * come on on reset - the GPIO line will be high, so -+ * make the LED light when the line is low... -+ */ -+ if (ixp4xxgpioled_devices[gpio_pin].flags != IXP4XX_GPIO_LOW) -+ ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 100; -+ else -+ ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 0; -+ -+ ixp4xxgpioled_devices[gpio_pin].ancestor.flags = 0; -+ -+ ixp4xxgpioled_devices[gpio_pin].ancestor.brightness_set = -+ ixp4xxgpioled_brightness_set; -+ -+ ixp4xxgpioled_devices[gpio_pin].ancestor.default_trigger = 0; -+ } -+ -+ rc = leds_device_register(&pdev->dev, -+ &ixp4xxgpioled_devices[gpio_pin].ancestor); -+ if (rc < 0) { -+ ixp4xxgpioled_devices[gpio_pin].ancestor.name = 0; -+ ixp4xxgpioled_remove(pdev); -+ return rc; -+ } -+ } -+ -+ return 0; -+} -+ -+static struct platform_driver ixp4xxgpioled_driver = { -+ .probe = ixp4xxgpioled_probe, -+ .remove = ixp4xxgpioled_remove, -+#ifdef CONFIG_PM -+ .suspend = ixp4xxgpioled_suspend, -+ .resume = ixp4xxgpioled_resume, -+#endif -+ .driver = { -+ .name = "IXP4XX-GPIO-LED", -+ }, -+}; -+ -+static int __devinit ixp4xxgpioled_init(void) -+{ -+ return platform_driver_register(&ixp4xxgpioled_driver); -+} -+ -+static void ixp4xxgpioled_exit(void) -+{ -+ platform_driver_unregister(&ixp4xxgpioled_driver); -+} -+ -+module_init(ixp4xxgpioled_init); -+module_exit(ixp4xxgpioled_exit); -+ -+MODULE_AUTHOR("John Bowler <jbowler@acm.org>"); -+MODULE_DESCRIPTION("IXP4XX GPIO LED driver"); -+MODULE_LICENSE("MIT"); ---- linux-2.6.15/include/linux/leds.h 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.15/include/linux/leds.h 1970-01-01 00:00:00.000000000 +0000 -@@ -16,7 +16,7 @@ struct class_device; - * LED Core - */ - struct led_device { -- char *name; -+ const char *name; - int brightness; - int flags; - #define LED_SUSPENDED (1 << 0) |