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add common GPIO LED support

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SVN-Revision: 17448
This commit is contained in:
Gabor Juhos 2009-08-31 09:14:14 +00:00
parent cf10d5fa39
commit 19a462c9e3
5 changed files with 86 additions and 0 deletions
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26
target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev_gpio_leds.h Normal file
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@ -0,0 +1,26 @@
/*
* Ralink SoC GPIO LED device support
*
* Copyright (C) 2009 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.
*/
#ifndef __ASM_MACH_RALINK_DEV_GPIO_LEDS_H
#define __ASM_MACH_RALINK_DEV_GPIO_LEDS_H
struct gpio_led;
#ifdef CONFIG_RALINK_DEV_GPIO_LEDS
__init void ramips_register_gpio_leds(int id, unsigned num_leds,
struct gpio_led *leds);
#else
static inline void ramips_register_gpio_leds(int id, unsigned num_leds,
struct gpio_led *leds)
{
}
#endif
#endif /* __ASM_MACH_RALINK_DEV_GPIO_LEDS_H */

3
target/linux/ramips/files/arch/mips/ralink/Kconfig
View file

@ -48,4 +48,7 @@ config SOC_RT305X
select SYS_HAS_EARLY_PRINTK select SYS_HAS_EARLY_PRINTK
select MIPS_MACHINE select MIPS_MACHINE
config RALINK_DEV_GPIO_LEDS
def_bool n
endif endif

2
target/linux/ramips/files/arch/mips/ralink/common/Makefile
View file

@ -8,3 +8,5 @@
# by the Free Software Foundation. # by the Free Software Foundation.
obj-y := intc.o gpio.o obj-y := intc.o gpio.o
obj-$(CONFIG_RALINK_DEV_GPIO_LEDS) += dev-gpio-leds.o

54
target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c Normal file
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@ -0,0 +1,54 @@
/*
* Ralink SoC GPIO LED device support
*
* Copyright (C) 2009 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/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <asm/mach-ralink/dev_gpio_leds.h>
void __init ramips_register_gpio_leds(int id, unsigned num_leds,
struct gpio_led *leds)
{
struct platform_device *pdev;
struct gpio_led_platform_data pdata;
struct gpio_led *p;
int err;
p = kmalloc(num_leds * sizeof(*p), GFP_KERNEL);
if (!p)
return;
memcpy(p, leds, num_leds * sizeof(*p));
pdev = platform_device_alloc("leds-gpio", id);
if (!pdev)
goto err_free_leds;
memset(&pdata, 0, sizeof(pdata));
pdata.num_leds = num_leds;
pdata.leds = p;
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
if (err)
goto err_put_pdev;
err = platform_device_add(pdev);
if (err)
goto err_put_pdev;
return;
err_put_pdev:
platform_device_put(pdev);
err_free_leds:
kfree(p);
}

1
target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig
View file

@ -9,6 +9,7 @@ config RT305X_MACH_GENERIC
config RT305X_MACH_WHR_G300N config RT305X_MACH_WHR_G300N
bool "Buffalo WHR-G300N support" bool "Buffalo WHR-G300N support"
default y default y
select RALINK_DEV_GPIO_LEDS
endmenu endmenu