[ramips] add common GPIO LED support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17448 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 86 insertions, 0 deletions

diff --git a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev_gpio_leds.h b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev_gpio_leds.h
new file mode 100644
index 0000000000..1d6fbc29d9
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev_gpio_leds.h
@@ -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 */
diff --git a/target/linux/ramips/files/arch/mips/ralink/Kconfig b/target/linux/ramips/files/arch/mips/ralink/Kconfig
index e180eabd65..fac5c7bfd6 100644
--- a/target/linux/ramips/files/arch/mips/ralink/Kconfig
+++ b/target/linux/ramips/files/arch/mips/ralink/Kconfig
@@ -48,4 +48,7 @@ config SOC_RT305X
 	select SYS_HAS_EARLY_PRINTK
 	select MIPS_MACHINE
 
+config RALINK_DEV_GPIO_LEDS
+	def_bool n
+
 endif
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/Makefile b/target/linux/ramips/files/arch/mips/ralink/common/Makefile
index 08e16dd5c2..24f67ea6c3 100644
--- a/target/linux/ramips/files/arch/mips/ralink/common/Makefile
+++ b/target/linux/ramips/files/arch/mips/ralink/common/Makefile
@@ -8,3 +8,5 @@
 # by the Free Software Foundation.
 
 obj-y	:= intc.o gpio.o
+
+obj-$(CONFIG_RALINK_DEV_GPIO_LEDS)	+= dev-gpio-leds.o
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c
new file mode 100644
index 0000000000..96651e7b9a
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c
@@ -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);
+}
diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig b/target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig
index 3b5e15e1b8..85bee65423 100644
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig
@@ -9,6 +9,7 @@ config RT305X_MACH_GENERIC
 config RT305X_MACH_WHR_G300N
 	bool "Buffalo WHR-G300N support"
 	default y
+	select RALINK_DEV_GPIO_LEDS
 
 endmenu