ARM: S5PV210: Add keypad device helpers

This patch adds the keypad device platform helpers for S5PV210 cpu.

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>

6 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index e65825f47f0..1244d612872 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -37,6 +37,11 @@ config S5PV210_SETUP_FB_24BPP
         help
           Common setup code for S5PV210 with an 24bpp RGB display helper.
 
+config S5PV210_SETUP_KEYPAD
+        bool
+        help
+          Common setup code for keypad.
+
 config S5PV210_SETUP_SDHCI
         bool
         select S5PV210_SETUP_SDHCI_GPIO
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index af557856b12..05048c5aa4c 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -32,5 +32,6 @@ obj-$(CONFIG_S5PV210_SETUP_FB_24BPP)	+= setup-fb-24bpp.o
 obj-$(CONFIG_S5PV210_SETUP_I2C1)        += setup-i2c1.o
 obj-$(CONFIG_S5PV210_SETUP_I2C2)        += setup-i2c2.o
 obj-$(CONFIG_S5PV210_SETUP_IDE)         += setup-ide.o
+obj-$(CONFIG_S5PV210_SETUP_KEYPAD)      += setup-keypad.o
 obj-$(CONFIG_S5PV210_SETUP_SDHCI)       += setup-sdhci.o
 obj-$(CONFIG_S5PV210_SETUP_SDHCI_GPIO)  += setup-sdhci-gpio.o
diff --git a/arch/arm/mach-s5pv210/cpu.c b/arch/arm/mach-s5pv210/cpu.c
index 8c4fdcde7f3..15e983a3f09 100644
--- a/arch/arm/mach-s5pv210/cpu.c
+++ b/arch/arm/mach-s5pv210/cpu.c
@@ -34,6 +34,7 @@
 #include <plat/s5pv210.h>
 #include <plat/ata-core.h>
 #include <plat/iic-core.h>
+#include <plat/keypad-core.h>
 #include <plat/sdhci.h>
 
 /* Initial IO mappings */
@@ -93,6 +94,9 @@ void __init s5pv210_map_io(void)
         s3c_i2c0_setname("s3c2440-i2c");
         s3c_i2c1_setname("s3c2440-i2c");
         s3c_i2c2_setname("s3c2440-i2c");
+
+        /* Use s5pv210-keypad instead of samsung-keypad */
+        samsung_keypad_setname("s5pv210-keypad");
 }
 
 void __init s5pv210_init_clocks(int xtal)
diff --git a/arch/arm/mach-s5pv210/include/mach/map.h b/arch/arm/mach-s5pv210/include/mach/map.h
index 3846a0be2fa..d0af0c1a526 100644
--- a/arch/arm/mach-s5pv210/include/mach/map.h
+++ b/arch/arm/mach-s5pv210/include/mach/map.h
@@ -32,6 +32,8 @@
 #define S5PV210_PA_SPI0         0xE1300000
 #define S5PV210_PA_SPI1         0xE1400000
 
+#define S5PV210_PA_KEYPAD       (0xE1600000)
+
 #define S5PV210_PA_IIC0         (0xE1800000)
 #define S5PV210_PA_IIC1         (0xFAB00000)
 #define S5PV210_PA_IIC2         (0xE1A00000)
@@ -107,5 +109,6 @@
 
 #define SAMSUNG_PA_ADC          S5PV210_PA_ADC
 #define SAMSUNG_PA_CFCON        S5PV210_PA_CFCON
+#define SAMSUNG_PA_KEYPAD       S5PV210_PA_KEYPAD
 
 #endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-s5pv210/setup-keypad.c b/arch/arm/mach-s5pv210/setup-keypad.c
new file mode 100644
index 00000000000..37b2790aafc
--- /dev/null
+++ b/arch/arm/mach-s5pv210/setup-keypad.c
@@ -0,0 +1,34 @@
+/*
+ * linux/arch/arm/mach-s5pv210/setup-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/gpio.h>
+#include <plat/gpio-cfg.h>
+
+void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
+{
+        unsigned int gpio, end;
+
+        /* Set all the necessary GPH3 pins to special-function 3: KP_ROW[x] */
+        end = S5PV210_GPH3(rows);
+        for (gpio = S5PV210_GPH3(0); gpio < end; gpio++) {
+                s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+                s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+        }
+
+        /* Set all the necessary GPH2 pins to special-function 3: KP_COL[x] */
+        end = S5PV210_GPH2(cols);
+        for (gpio = S5PV210_GPH2(0); gpio < end; gpio++) {
+                s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+                s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+        }
+}
diff --git a/arch/arm/plat-samsung/include/plat/keypad-core.h b/arch/arm/plat-samsung/include/plat/keypad-core.h
new file mode 100644
index 00000000000..d513e1b3a31
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/keypad-core.h
@@ -0,0 +1,31 @@
+/*
+ * linux/arch/arm/plat-samsung/include/plat/keypad-core.h
+ *
+ * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ *
+ * Samsung keypad controller core function
+ *
+ *  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.
+ *
+ */
+
+#ifndef __ASM_ARCH_KEYPAD_CORE_H
+#define __ASM_ARCH_KEYPAD_CORE_H
+
+/* These function are only for use with the core support code, such as
+ * the cpu specific initialisation code
+ */
+
+/* re-define device name depending on support. */
+static inline void samsung_keypad_setname(char *name)
+{
+#ifdef CONFIG_SAMSUNG_DEV_KEYPAD
+        samsung_device_keypad.name = name;
+#endif
+}
+
+#endif /* __ASM_ARCH_KEYPAD_CORE_H */