ARM: S5PC100: Add keypad device to the SMDKC100 board

This patch is to support keypad device to the SMDKC100 board.

Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s5pc100/Kconfig

@@ -30,6 +30,11 @@ config S5PC100_SETUP_IDE
 	help
 	  Common setup code for S5PC100 IDE GPIO configurations
 
+config S5PC100_SETUP_KEYPAD
+	bool
+	help
+	  Common setup code for KEYPAD GPIO configurations.
+
 config S5PC100_SETUP_SDHCI
 	bool
 	select S5PC100_SETUP_SDHCI_GPIO
@@ -51,12 +56,14 @@ config MACH_SMDKC100
 	select S3C_DEV_HSMMC
 	select S3C_DEV_HSMMC1
 	select S3C_DEV_HSMMC2
+	select SAMSUNG_DEV_KEYPAD
 	select SAMSUNG_DEV_TS
 	select S3C_DEV_WDT
 	select HAVE_S3C2410_WATCHDOG
 	select S5PC100_SETUP_FB_24BPP
 	select S5PC100_SETUP_I2C1
 	select S5PC100_SETUP_IDE
+	select S5PC100_SETUP_KEYPAD
 	select S5PC100_SETUP_SDHCI
 	help
 	  Machine support for the Samsung SMDKC100

arch/arm/mach-s5pc100/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_CPU_S5PC100)	+= dma.o
 obj-$(CONFIG_S5PC100_SETUP_FB_24BPP)	+= setup-fb-24bpp.o
 obj-$(CONFIG_S5PC100_SETUP_I2C1)	+= setup-i2c1.o
 obj-$(CONFIG_S5PC100_SETUP_IDE)		+= setup-ide.o
+obj-$(CONFIG_S5PC100_SETUP_KEYPAD)	+= setup-keypad.o
 obj-$(CONFIG_S5PC100_SETUP_SDHCI)	+= setup-sdhci.o
 obj-$(CONFIG_S5PC100_SETUP_SDHCI_GPIO)	+= setup-sdhci-gpio.o
 

arch/arm/mach-s5pc100/include/mach/map.h

@@ -137,11 +137,13 @@
 #define S3C_PA_HSMMC2		S5PC100_PA_HSMMC(2)
 #define S3C_PA_KEYPAD		S5PC100_PA_KEYPAD
 #define S3C_PA_WDT		S5PC100_PA_WATCHDOG
+#define S3C_PA_TSADC		S5PC100_PA_TSADC
 #define S3C_PA_ONENAND		S5PC100_PA_ONENAND
 #define S3C_PA_ONENAND_BUF	S5PC100_PA_ONENAND_BUF
 #define S3C_SZ_ONENAND_BUF	S5PC100_SZ_ONENAND_BUF
 
 #define SAMSUNG_PA_ADC		S5PC100_PA_TSADC
 #define SAMSUNG_PA_CFCON	S5PC100_PA_CFCON
+#define SAMSUNG_PA_KEYPAD	S5PC100_PA_KEYPAD
 
 #endif /* __ASM_ARCH_C100_MAP_H */

arch/arm/mach-s5pc100/mach-smdkc100.c

@@ -22,6 +22,7 @@
 #include <linux/i2c.h>
 #include <linux/fb.h>
 #include <linux/delay.h>
+#include <linux/input.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -44,6 +45,7 @@
 #include <plat/iic.h>
 #include <plat/ata.h>
 #include <plat/adc.h>
+#include <plat/keypad.h>
 #include <plat/ts.h>
 
 /* Following are default values for UCON, ULCON and UFCON UART registers */
@@ -156,6 +158,25 @@ static struct s3c_ide_platdata smdkc100_ide_pdata __initdata = {
 	.setup_gpio	= s5pc100_ide_setup_gpio,
 };
 
+static uint32_t smdkc100_keymap[] __initdata = {
+	/* KEY(row, col, keycode) */
+	KEY(0, 3, KEY_1), KEY(0, 4, KEY_2), KEY(0, 5, KEY_3),
+	KEY(0, 6, KEY_4), KEY(0, 7, KEY_5),
+	KEY(1, 3, KEY_A), KEY(1, 4, KEY_B), KEY(1, 5, KEY_C),
+	KEY(1, 6, KEY_D), KEY(1, 7, KEY_E)
+};
+
+static struct matrix_keymap_data smdkc100_keymap_data __initdata = {
+	.keymap		= smdkc100_keymap,
+	.keymap_size	= ARRAY_SIZE(smdkc100_keymap),
+};
+
+static struct samsung_keypad_platdata smdkc100_keypad_data __initdata = {
+	.keymap_data	= &smdkc100_keymap_data,
+	.rows		= 2,
+	.cols		= 8,
+};
+
 static struct platform_device *smdkc100_devices[] __initdata = {
 	&s3c_device_adc,
 	&s3c_device_cfcon,
@@ -169,6 +190,7 @@ static struct platform_device *smdkc100_devices[] __initdata = {
 	&s3c_device_wdt,
 	&smdkc100_lcd_powerdev,
 	&s5pc100_device_iis0,
+	&samsung_device_keypad,
 	&s5pc100_device_ac97,
 };
 
@@ -198,6 +220,8 @@ static void __init smdkc100_machine_init(void)
 	s3c_fb_set_platdata(&smdkc100_lcd_pdata);
 	s3c_ide_set_platdata(&smdkc100_ide_pdata);
 
+	samsung_keypad_set_platdata(&smdkc100_keypad_data);
+
 	/* LCD init */
 	gpio_request(S5PC100_GPD(0), "GPD");
 	gpio_request(S5PC100_GPH0(6), "GPH0");

arch/arm/mach-s5pc100/setup-keypad.c

@@ -0,0 +1,34 @@
+/* linux/arch/arm/mach-s5pc100/setup-keypad.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * GPIO configuration for S5PC100 KeyPad device
+ *
+ * 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/gpio.h>
+#include <plat/gpio-cfg.h>
+
+void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
+{
+	unsigned int gpio;
+	unsigned int end;
+
+	/* Set all the necessary GPH3 pins to special-function 3: KP_ROW[x] */
+	end = S5PC100_GPH3(rows);
+	for (gpio = S5PC100_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 = S5PC100_GPH2(cols);
+	for (gpio = S5PC100_GPH2(0); gpio < end; gpio++) {
+		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+}