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openwrt/target/linux/ixp4xx/patches-2.6.25/304-gateworks_led_latch.patch
Imre Kaloz ef79a9a8f3 add Avila/Cambria latch LED support, thanks Chris 
SVN-Revision: 11247
2008-05-23 09:03:47 +00:00

450 lines
12 KiB
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diff -ruN trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/Kconfig linux-2.6.24.5/drivers/leds/Kconfig
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/Kconfig 2008-04-29 11:29:49.000000000 -0700
+++ linux-2.6.24.5/drivers/leds/Kconfig 2008-04-29 17:18:47.000000000 -0700
@@ -120,6 +120,12 @@
outputs. To be useful the particular board must have LEDs
and they must be connected to the GPIO lines.
+config LEDS_LATCH
+ tristate "LED Support for Memory Latched LEDs"
+ depends on LEDS_CLASS
+ help
+ -- To Do --
+
config LEDS_CM_X270
tristate "LED Support for the CM-X270 LEDs"
depends on LEDS_CLASS && MACH_ARMCORE
diff -ruN trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/leds-latch.c linux-2.6.24.5/drivers/leds/leds-latch.c
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/leds-latch.c 1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.24.5/drivers/leds/leds-latch.c 2008-04-30 14:03:21.000000000 -0700
@@ -0,0 +1,141 @@
+/*
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/workqueue.h>
+#include <asm/io.h>
+#include <linux/spinlock.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;
+};
+
+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);
+
+ spin_lock(mem_lock);
+
+ if (value == LED_OFF)
+ mem_keep |= (0x1 << led_dat->bit);
+ else
+ mem_keep &= ~(0x1 << led_dat->bit);
+
+ writeb(mem_keep, iobase);
+
+ 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;
+
+ iobase = ioremap_nocache(pdata->mem, 0x1000);
+ writeb(0xFF, iobase);
+
+ 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;
+
+ ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
+ if (ret < 0) {
+ goto err;
+ }
+ }
+
+ 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");
+MODULE_LICENSE("GPL");
diff -ruN trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/Makefile linux-2.6.24.5/drivers/leds/Makefile
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/drivers/leds/Makefile 2008-04-29 11:29:49.000000000 -0700
+++ linux-2.6.24.5/drivers/leds/Makefile 2008-04-29 17:19:02.000000000 -0700
@@ -21,6 +21,7 @@
obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
+obj-$(CONFIG_LEDS_LATCH) += leds-latch.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
diff -ruN trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/arch/arm/mach-ixp4xx/avila-setup.c linux-2.6.24.5/arch/arm/mach-ixp4xx/avila-setup.c
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/arch/arm/mach-ixp4xx/avila-setup.c 2008-04-29 11:29:50.000000000 -0700
+++ linux-2.6.24.5/arch/arm/mach-ixp4xx/avila-setup.c 2008-04-30 15:43:40.000000000 -0700
@@ -173,7 +173,7 @@
.dev.platform_data = &avila_npec_data,
};
-static struct gpio_led avila_leds[] = {
+static struct gpio_led avila_gpio_leds[] = {
{
.name = "user", /* green led */
.gpio = AVILA_GW23XX_LED_USER_GPIO,
@@ -181,17 +181,65 @@
}
};
-static struct gpio_led_platform_data avila_leds_data = {
+static struct gpio_led_platform_data avila_gpio_leds_data = {
.num_leds = 1,
- .leds = avila_leds,
+ .leds = avila_gpio_leds,
};
-static struct platform_device avila_leds_device = {
+static struct platform_device avila_gpio_leds_device = {
.name = "leds-gpio",
.id = -1,
- .dev.platform_data = &avila_leds_data,
+ .dev.platform_data = &avila_gpio_leds_data,
};
+static struct latch_led avila_latch_leds[] = {
+ {
+ .name = "led0", /* green led */
+ .bit = 0,
+ },
+ {
+ .name = "led1", /* green led */
+ .bit = 1,
+ },
+ {
+ .name = "led2", /* green led */
+ .bit = 2,
+ },
+ {
+ .name = "led3", /* green led */
+ .bit = 3,
+ },
+ {
+ .name = "led4", /* green led */
+ .bit = 4,
+ },
+ {
+ .name = "led5", /* green led */
+ .bit = 5,
+ },
+ {
+ .name = "led6", /* green led */
+ .bit = 6,
+ },
+ {
+ .name = "led7", /* green led */
+ .bit = 7,
+ }
+};
+
+static struct latch_led_platform_data avila_latch_leds_data = {
+ .num_leds = 8,
+ .leds = avila_latch_leds,
+ .mem = 0x51000000,
+};
+
+static struct platform_device avila_latch_leds_device = {
+ .name = "leds-latch",
+ .id = -1,
+ .dev.platform_data = &avila_latch_leds_data,
+};
+
+
static struct resource avila_gpio_resources[] = {
{
.name = "gpio",
@@ -221,7 +269,7 @@
platform_device_register(&avila_npeb_device);
platform_device_register(&avila_npec_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
}
#ifdef CONFIG_SENSORS_EEPROM
@@ -230,7 +278,7 @@
platform_device_register(&avila_npeb_device);
platform_device_register(&avila_npec_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
}
static void __init avila_gw2345_setup(void)
@@ -242,7 +290,7 @@
avila_npec_data.phy = 5; /* port 5 of the KS8995 switch */
platform_device_register(&avila_npec_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
}
static void __init avila_gw2347_setup(void)
@@ -250,8 +298,8 @@
avila_npeb_data.quirks |= IXP4XX_ETH_QUIRK_GW23X7;
platform_device_register(&avila_npeb_device);
- avila_leds[0].gpio = AVILA_GW23X7_LED_USER_GPIO;
- platform_device_register(&avila_leds_device);
+ avila_gpio_leds[0].gpio = AVILA_GW23X7_LED_USER_GPIO;
+ platform_device_register(&avila_gpio_leds_device);
}
static void __init avila_gw2348_setup(void)
@@ -259,13 +307,13 @@
platform_device_register(&avila_npeb_device);
platform_device_register(&avila_npec_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
}
static void __init avila_gw2353_setup(void)
{
platform_device_register(&avila_npeb_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
}
static void __init avila_gw2355_setup(void)
@@ -277,7 +325,17 @@
avila_npec_data.phy = 16;
platform_device_register(&avila_npec_device);
- platform_device_register(&avila_leds_device);
+ platform_device_register(&avila_gpio_leds_device);
+
+ *IXP4XX_EXP_CS4 |= 0xbfff3c03;
+ avila_latch_leds[0].name = "RXD";
+ avila_latch_leds[1].name = "TXD";
+ avila_latch_leds[2].name = "POL";
+ avila_latch_leds[3].name = "LNK";
+ avila_latch_leds[4].name = "ERR";
+ avila_latch_leds_data.num_leds = 5;
+ avila_latch_leds_data.mem = 0x54000000;
+ platform_device_register(&avila_latch_leds_device);
}
static void __init avila_gw2357_setup(void)
@@ -285,8 +343,11 @@
avila_npeb_data.quirks |= IXP4XX_ETH_QUIRK_GW23X7;
platform_device_register(&avila_npeb_device);
- avila_leds[0].gpio = AVILA_GW23X7_LED_USER_GPIO;
- platform_device_register(&avila_leds_device);
+ avila_gpio_leds[0].gpio = AVILA_GW23X7_LED_USER_GPIO;
+ platform_device_register(&avila_gpio_leds_device);
+
+ *IXP4XX_EXP_CS1 |= 0xbfff3c03;
+ platform_device_register(&avila_latch_leds_device);
}
static struct avila_board_info avila_boards[] __initdata = {
diff -ruN trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/arch/arm/mach-ixp4xx/cambria-setup.c linux-2.6.24.5/arch/arm/mach-ixp4xx/cambria-setup.c
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/arch/arm/mach-ixp4xx/cambria-setup.c 2008-04-29 11:29:49.000000000 -0700
+++ linux-2.6.24.5/arch/arm/mach-ixp4xx/cambria-setup.c 2008-04-30 14:43:57.000000000 -0700
@@ -25,6 +25,8 @@
# include <linux/i2c.h>
# include <linux/eeprom.h>
#endif
+
+#include <linux/leds.h>
#include <linux/i2c-gpio.h>
#include <asm/types.h>
@@ -149,19 +151,52 @@
}
};
-#ifdef CONFIG_LEDS_IXP4XX
-static struct platform_device cambria_leds_pld = {
- .name = "IXP4XX-PLD-LED",
- .id = -1,
- .num_resources = 0,
-};
-
-static struct platform_device cambria_leds_mem = {
- .name = "IXP4XX-MEM-LED",
- .id = -1,
- .num_resources = 0,
+static struct latch_led cambria_leds[] = {
+ {
+ .name = "ledA", /* green led */
+ .bit = 0,
+ },
+ {
+ .name = "ledB", /* green led */
+ .bit = 1,
+ },
+ {
+ .name = "ledC", /* green led */
+ .bit = 2,
+ },
+ {
+ .name = "ledD", /* green led */
+ .bit = 3,
+ },
+ {
+ .name = "ledE", /* green led */
+ .bit = 4,
+ },
+ {
+ .name = "ledF", /* green led */
+ .bit = 5,
+ },
+ {
+ .name = "ledG", /* green led */
+ .bit = 6,
+ },
+ {
+ .name = "ledH", /* green led */
+ .bit = 7,
+ }
+};
+
+static struct latch_led_platform_data cambria_leds_data = {
+ .num_leds = 8,
+ .leds = cambria_leds,
+ .mem = 0x53F40000,
+};
+
+static struct platform_device cambria_leds_device = {
+ .name = "leds-latch",
+ .id = -1,
+ .dev.platform_data = &cambria_leds_data,
};
-#endif
static struct platform_device *cambria_devices[] __initdata = {
&cambria_i2c_gpio,
@@ -234,6 +269,9 @@
cambria_pata_data.cs1_cfg = IXP4XX_EXP_CS3;
platform_device_register(&cambria_pata);
+
+ *IXP4XX_EXP_CS3 |= 0xbfff3c03;
+ platform_device_register(&cambria_leds_device);
}
#ifdef CONFIG_MACH_CAMBRIA
--- trunk/build_dir/linux-ixp4xx_generic/linux-2.6.24.5/include/linux/leds.h 2008-04-18 18:53:39.000000000 -0700
+++ linux-2.6.24.5/include/linux/leds.h 2008-04-29 17:48:56.000000000 -0700
@@ -123,5 +123,18 @@
struct gpio_led *leds;
};
+/* 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;
+};
+
#endif /* __LINUX_LEDS_H_INCLUDED */
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