ARM: SAMSUNG: Add keypad device support

This patch adds Samsung keypad device definition for Samsung SoCs.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

5 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 15ef1e4026cf..4529dd6232bc 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -237,6 +237,11 @@ config SAMSUNG_DEV_TS
         help
             Common in platform device definitions for touchscreen device
 
+config SAMSUNG_DEV_KEYPAD
+        bool
+        help
+          Compile in platform device definitions for keypad
+
 # DMA
 
 config S3C_DMA
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 75b91b43db49..8594fe73b6d1 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_S3C_DEV_RTC)	+= dev-rtc.o
 obj-$(CONFIG_SAMSUNG_DEV_ADC)   += dev-adc.o
 obj-$(CONFIG_SAMSUNG_DEV_IDE)   += dev-ide.o
 obj-$(CONFIG_SAMSUNG_DEV_TS)    += dev-ts.o
+obj-$(CONFIG_SAMSUNG_DEV_KEYPAD)        += dev-keypad.o
 
 # DMA support
 
diff --git a/arch/arm/plat-samsung/dev-keypad.c b/arch/arm/plat-samsung/dev-keypad.c
new file mode 100644
index 000000000000..677c2d731b65
--- /dev/null
+++ b/arch/arm/plat-samsung/dev-keypad.c
@@ -0,0 +1,50 @@
+/*
+ * linux/arch/arm/plat-samsung/dev-keypad.c
+ *
+ * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <mach/irqs.h>
+#include <mach/map.h>
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/keypad.h>
+
+static struct resource samsung_keypad_resources[] = {
+        [0] = {
+                .start  = SAMSUNG_PA_KEYPAD,
+                .end    = SAMSUNG_PA_KEYPAD + 0x20 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = IRQ_KEYPAD,
+                .end    = IRQ_KEYPAD,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device samsung_device_keypad = {
+        .name           = "samsung-keypad",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(samsung_keypad_resources),
+        .resource       = samsung_keypad_resources,
+};
+
+void __init samsung_keypad_set_platdata(struct samsung_keypad_platdata *pd)
+{
+        struct samsung_keypad_platdata *npd;
+
+        npd = s3c_set_platdata(pd, sizeof(struct samsung_keypad_platdata),
+                        &samsung_device_keypad);
+
+        if (!npd->cfg_gpio)
+                npd->cfg_gpio = samsung_keypad_cfg_gpio;
+}
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 097d0e458ab9..4c31d328669b 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -102,6 +102,8 @@ extern struct platform_device s5pc100_device_iis0;
 extern struct platform_device s5pc100_device_iis1;
 extern struct platform_device s5pc100_device_iis2;
 
+extern struct platform_device samsung_device_keypad;
+
 /* s3c2440 specific devices */
 
 #ifdef CONFIG_CPU_S3C2440
diff --git a/arch/arm/plat-samsung/include/plat/keypad.h b/arch/arm/plat-samsung/include/plat/keypad.h
index 3a70c125fe51..b59a6483cd8a 100644
--- a/arch/arm/plat-samsung/include/plat/keypad.h
+++ b/arch/arm/plat-samsung/include/plat/keypad.h
@@ -40,4 +40,17 @@ struct samsung_keypad_platdata {
         void (*cfg_gpio)(unsigned int rows, unsigned int cols);
 };
 
+/**
+ * samsung_keypad_set_platdata - Set platform data for Samsung Keypad device.
+ * @pd: Platform data to register to device.
+ *
+ * Register the given platform data for use with Samsung Keypad device.
+ * The call will copy the platform data, so the board definitions can
+ * make the structure itself __initdata.
+ */
+extern void samsung_keypad_set_platdata(struct samsung_keypad_platdata *pd);
+
+/* defined by architecture to configure gpio. */
+extern void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols);
+
 #endif /* __PLAT_SAMSUNG_KEYPAD_H */