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authorGabor Juhos <juhosg@openwrt.org>2009-08-31 09:14:14 +0000
committerGabor Juhos <juhosg@openwrt.org>2009-08-31 09:14:14 +0000
commit19a462c9e37ab229a3bc2c90e479d142bd63178e (patch)
tree6ad85a4584727482b2eedc449996f461fe324a63 /target/linux/ramips
parentcf10d5fa39ff90273d107f0a579f5bdd17a97187 (diff)
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add common GPIO LED support
SVN-Revision: 17448
Diffstat (limited to 'target/linux/ramips')
-rw-r--r--target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev_gpio_leds.h26
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/Kconfig3
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/common/Makefile2
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-leds.c54
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/rt305x/Kconfig1
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 0000000..1d6fbc2
--- /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 e180eab..fac5c7b 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 08e16dd..24f67ea 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 0000000..96651e7
--- /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 3b5e15e..85bee65 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