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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-01-30 15:25:20 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-01-30 15:25:20 +0000
commit1284f885f3f4f7dca40714fd8f70d5d578957c5d (patch)
treeae15c64c7bb9ca9eea7af4b455e5195188bb98f4 /target/linux/ramips/files/arch
parentc96f03b559a6b08cd6f8cec35380da26f5e0658d (diff)
ramips: add common gpio-buttons device
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19404 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/files/arch')
-rw-r--r--target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev-gpio-buttons.h31
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/Kconfig3
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/common/Makefile3
-rw-r--r--target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c57
4 files changed, 93 insertions, 1 deletions
diff --git a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev-gpio-buttons.h b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev-gpio-buttons.h
new file mode 100644
index 000000000..c1ae71e8f
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/dev-gpio-buttons.h
@@ -0,0 +1,31 @@
+/*
+ * Ralink SoC GPIO button support
+ *
+ * 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.
+ */
+
+#ifndef __ASM_MACH_RALINK_DEV_GPIO_BUTTONS_H
+#define __ASM_MACH_RALINK_DEV_GPIO_BUTTONS_H
+
+#include <linux/input.h>
+#include <linux/gpio_buttons.h>
+
+#ifdef CONFIG_RALINK_DEV_GPIO_BUTTONS
+void __init ramips_register_gpio_buttons(int id,
+ unsigned poll_interval,
+ unsigned nbuttons,
+ struct gpio_button *buttons);
+#else
+static inline void ramips_register_gpio_buttons(int id,
+ unsigned poll_interval,
+ unsigned nbuttons,
+ struct gpio_button *buttons);
+{
+}
+#endif
+
+#endif /* __ASM_MACH_RALINK_DEV_GPIO_BUTTONS_H */
diff --git a/target/linux/ramips/files/arch/mips/ralink/Kconfig b/target/linux/ramips/files/arch/mips/ralink/Kconfig
index fac5c7bfd..c30dbe1c3 100644
--- a/target/linux/ramips/files/arch/mips/ralink/Kconfig
+++ b/target/linux/ramips/files/arch/mips/ralink/Kconfig
@@ -48,6 +48,9 @@ config SOC_RT305X
select SYS_HAS_EARLY_PRINTK
select MIPS_MACHINE
+config RALINK_DEV_GPIO_BUTTONS
+ def_bool n
+
config RALINK_DEV_GPIO_LEDS
def_bool n
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/Makefile b/target/linux/ramips/files/arch/mips/ralink/common/Makefile
index c2cf48bcb..adab85f68 100644
--- a/target/linux/ramips/files/arch/mips/ralink/common/Makefile
+++ b/target/linux/ramips/files/arch/mips/ralink/common/Makefile
@@ -1,7 +1,7 @@
#
# Makefile for the Ralink common stuff
#
-# Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+# Copyright (C) 2009-2010 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
@@ -9,4 +9,5 @@
obj-y := prom.o setup.o intc.o gpio.o
+obj-$(CONFIG_RALINK_DEV_GPIO_BUTTONS) += dev-gpio-buttons.o
obj-$(CONFIG_RALINK_DEV_GPIO_LEDS) += dev-gpio-leds.o
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c
new file mode 100644
index 000000000..f32300129
--- /dev/null
+++ b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c
@@ -0,0 +1,57 @@
+/*
+ * Ralink SoC GPIO button support
+ *
+ * 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/init.h"
+#include <linux/platform_device.h>
+
+#include <asm/mach-ralink/dev-gpio-buttons.h>
+
+void __init ramips_register_gpio_buttons(int id,
+ unsigned poll_interval,
+ unsigned nbuttons,
+ struct gpio_button *buttons)
+{
+ struct platform_device *pdev;
+ struct gpio_buttons_platform_data pdata;
+ struct gpio_button *p;
+ int err;
+
+ p = kmalloc(nbuttons * sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return;
+
+ memcpy(p, buttons, nbuttons * sizeof(*p));
+
+ pdev = platform_device_alloc("gpio-buttons", id);
+ if (!pdev)
+ goto err_free_buttons;
+
+ memset(&pdata, 0, sizeof(pdata));
+ pdata.poll_interval = poll_interval;
+ pdata.nbuttons = nbuttons;
+ pdata.buttons = 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_buttons:
+ kfree(p);
+}