ar71xx: add LED driver for the RB750

SVN-Revision: 20051
lede-17.01
Gabor Juhos 2010-03-08 12:10:01 +00:00
parent a1a9727fbf
commit 6600fab893
7 changed files with 249 additions and 0 deletions

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@ -133,6 +133,7 @@ CONFIG_INITRAMFS_ROOT_UID=0
CONFIG_INITRAMFS_SOURCE="../../root"
CONFIG_IRQ_CPU=y
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_RB750 is not set
# CONFIG_LEDS_WNDR3700_USB is not set
# CONFIG_M25PXX_USE_FAST_READ is not set
# CONFIG_MACH_ALCHEMY is not set

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@ -174,6 +174,7 @@ CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
CONFIG_IRQ_CPU=y
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_RB750 is not set
# CONFIG_LEDS_WNDR3700_USB is not set
CONFIG_LOONGSON_UART_BASE=y
# CONFIG_M25PXX_USE_FAST_READ is not set

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@ -8,12 +8,54 @@
* by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <asm/mach-ar71xx/ar71xx.h>
#include <asm/mach-ar71xx/mach-rb750.h>
#include "machtype.h"
#include "dev-ap91-eth.h"
static struct rb750_led_data rb750_leds[] = {
{
.name = "rb750:green:act",
.mask = RB750_LED_ACT,
.active_low = 1,
}, {
.name = "rb750:green:port1",
.mask = RB750_LED_PORT5,
.active_low = 1,
}, {
.name = "rb750:green:port2",
.mask = RB750_LED_PORT4,
.active_low = 1,
}, {
.name = "rb750:green:port3",
.mask = RB750_LED_PORT3,
.active_low = 1,
}, {
.name = "rb750:green:port4",
.mask = RB750_LED_PORT2,
.active_low = 1,
}, {
.name = "rb750:green:port5",
.mask = RB750_LED_PORT1,
.active_low = 1,
}
};
static struct rb750_led_platform_data rb750_leds_data = {
.num_leds = ARRAY_SIZE(rb750_leds),
.leds = rb750_leds,
};
static struct platform_device rb750_leds_device = {
.name = "leds-rb750",
.id = -1,
.dev = {
.platform_data = &rb750_leds_data,
}
};
int rb750_latch_change(u32 mask_clr, u32 mask_set)
{
static DEFINE_SPINLOCK(lock);
@ -65,7 +107,14 @@ EXPORT_SYMBOL_GPL(rb750_latch_change);
static void __init rb750_setup(void)
{
ar71xx_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
ap91_eth_init(NULL);
platform_device_register(&rb750_leds_device);
}
MIPS_MACHINE(AR71XX_MACH_RB_750, "750i", "MikroTik RouterBOARD 750",

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@ -49,6 +49,18 @@
#define RB750_LED_BITS (RB750_LED_PORT1 | RB750_LED_PORT2 | RB750_LED_PORT3 | \
RB750_LED_PORT4 | RB750_LED_PORT5 | RB750_LED_ACT)
struct rb750_led_data {
char *name;
char *default_trigger;
u32 mask;
int active_low;
};
struct rb750_led_platform_data {
int num_leds;
struct rb750_led_data *leds;
};
int rb750_latch_change(u32 mask_clr, u32 mask_set);
#endif /* _MACH_RB750_H */

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@ -0,0 +1,140 @@
/*
* LED driver for the RouterBOARD 750
*
* Copyright (C) 2010 Gabor Juhos <juhosg@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 <asm/mach-ar71xx/mach-rb750.h>
#define DRV_NAME "leds-rb750"
struct rb750_led_dev {
struct led_classdev cdev;
u32 mask;
int active_low;
};
struct rb750_led_drvdata {
struct rb750_led_dev *led_devs;
int num_leds;
};
static inline struct rb750_led_dev *to_rbled(struct led_classdev *led_cdev)
{
return (struct rb750_led_dev *)container_of(led_cdev,
struct rb750_led_dev, cdev);
}
static void rb750_led_brightness_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct rb750_led_dev *rbled = to_rbled(led_cdev);
int level;
level = (value == LED_OFF) ? 0 : 1;
level ^= rbled->active_low;
if (level)
rb750_latch_change(0, rbled->mask);
else
rb750_latch_change(rbled->mask, 0);
}
static int __devinit rb750_led_probe(struct platform_device *pdev)
{
struct rb750_led_platform_data *pdata;
struct rb750_led_drvdata *drvdata;
int ret = 0;
int i;
pdata = pdev->dev.platform_data;
if (!pdata)
return -EINVAL;
drvdata = kzalloc(sizeof(struct rb750_led_drvdata) +
sizeof(struct rb750_led_dev) * pdata->num_leds,
GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
drvdata->num_leds = pdata->num_leds;
drvdata->led_devs = (struct rb750_led_dev *) &drvdata[1];
for (i = 0; i < drvdata->num_leds; i++) {
struct rb750_led_dev *rbled = &drvdata->led_devs[i];
struct rb750_led_data *led_data = &pdata->leds[i];
rbled->cdev.name = led_data->name;
rbled->cdev.default_trigger = led_data->default_trigger;
rbled->cdev.brightness_set = rb750_led_brightness_set;
rbled->cdev.brightness = LED_OFF;
rbled->mask = led_data->mask;
rbled->active_low = !!led_data->active_low;
ret = led_classdev_register(&pdev->dev, &rbled->cdev);
if (ret)
goto err;
}
platform_set_drvdata(pdev, drvdata);
return 0;
err:
for (i = i - 1; i >= 0; i--)
led_classdev_unregister(&drvdata->led_devs[i].cdev);
kfree(drvdata);
return ret;
}
static int __devexit rb750_led_remove(struct platform_device *pdev)
{
struct rb750_led_drvdata *drvdata;
int i;
drvdata = platform_get_drvdata(pdev);
for (i = 0; i < drvdata->num_leds; i++)
led_classdev_unregister(&drvdata->led_devs[i].cdev);
kfree(drvdata);
return 0;
}
static struct platform_driver rb750_led_driver = {
.probe = rb750_led_probe,
.remove = __devexit_p(rb750_led_remove),
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
};
MODULE_ALIAS("platform:leds-rb750");
static int __init rb750_led_init(void)
{
return platform_driver_register(&rb750_led_driver);
}
static void __exit rb750_led_exit(void)
{
platform_driver_unregister(&rb750_led_driver);
}
module_init(rb750_led_init);
module_exit(rb750_led_exit);
MODULE_DESCRIPTION(DRV_NAME);
MODULE_DESCRIPTION("LED driver for the RouterBOARD 750");
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
MODULE_LICENSE("GPL v2");

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@ -0,0 +1,23 @@
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -243,6 +243,10 @@
This option enables support for the USB LED found on the
NETGEAR WNDR3700 board.
+config LEDS_RB750
+ tristate "LED driver for the Mikrotik RouterBOARD 750"
+ depends on LEDS_CLASS && AR71XX_MACH_RB750
+
comment "LED Triggers"
config LEDS_TRIGGERS
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -30,6 +30,7 @@
obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o
obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
obj-${CONFIG_LEDS_WNDR3700_USB} += leds-wndr3700-usb.o
+obj-${CONFIG_LEDS_RB750} += leds-rb750.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o

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@ -0,0 +1,23 @@
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -243,6 +243,10 @@
This option enables support for the USB LED found on the
NETGEAR WNDR3700 board.
+config LEDS_RB750
+ tristate "LED driver for the Mikrotik RouterBOARD 750"
+ depends on LEDS_CLASS && AR71XX_MACH_RB750
+
comment "LED Triggers"
config LEDS_TRIGGERS
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -30,6 +30,7 @@
obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o
obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
obj-${CONFIG_LEDS_WNDR3700_USB} += leds-wndr3700-usb.o
+obj-${CONFIG_LEDS_RB750} += leds-rb750.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o