ARM: S3C64XX: Add keypad device to the SMDK6410 board

This patch is to support keypad device to the SMDK6410 board.

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

arch/arm/mach-s3c64xx/Kconfig

@@ -67,6 +67,11 @@ config S3C64XX_SETUP_FB_24BPP
 	help
 	  Common setup code for S3C64XX with an 24bpp RGB display helper.
 
+config S3C64XX_SETUP_KEYPAD
+	bool
+	help
+	  Common setup code for S3C64XX KEYPAD GPIO configurations
+
 config S3C64XX_SETUP_SDHCI_GPIO
 	bool
 	help
@@ -107,11 +112,13 @@ config MACH_SMDK6410
 	select S3C_DEV_USB_HOST
 	select S3C_DEV_USB_HSOTG
 	select S3C_DEV_WDT
+	select SAMSUNG_DEV_KEYPAD
 	select HAVE_S3C2410_WATCHDOG
 	select S3C64XX_SETUP_SDHCI
 	select S3C64XX_SETUP_I2C1
 	select S3C64XX_SETUP_IDE
 	select S3C64XX_SETUP_FB_24BPP
+	select S3C64XX_SETUP_KEYPAD
 	help
 	  Machine support for the Samsung SMDK6410
 

arch/arm/mach-s3c64xx/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_S3C64XX_DMA)	+= dma.o
 obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
 obj-$(CONFIG_S3C64XX_SETUP_I2C1) += setup-i2c1.o
 obj-$(CONFIG_S3C64XX_SETUP_IDE) += setup-ide.o
+obj-$(CONFIG_S3C64XX_SETUP_KEYPAD) += setup-keypad.o
 obj-$(CONFIG_S3C64XX_SETUP_SDHCI) += setup-sdhci.o
 obj-$(CONFIG_S3C64XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
 obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o

arch/arm/mach-s3c64xx/clock.c

@@ -171,6 +171,12 @@ static struct clk init_clocks_disable[] = {
 		.ctrlbit	= S3C6410_CLKCON_PCLK_IIS2,
 	}, {
 #endif
+		.name		= "keypad",
+		.id		= -1,
+		.parent		= &clk_p,
+		.enable		= s3c64xx_pclk_ctrl,
+		.ctrlbit	= S3C_CLKCON_PCLK_KEYPAD,
+	}, {
 		.name		= "spi",
 		.id		= 0,
 		.parent		= &clk_p,

arch/arm/mach-s3c64xx/include/mach/map.h

@@ -67,6 +67,7 @@
 #define S3C64XX_PA_USB_HSOTG	(0x7C000000)
 #define S3C64XX_PA_WATCHDOG	(0x7E004000)
 #define S3C64XX_PA_RTC		(0x7E005000)
+#define S3C64XX_PA_KEYPAD	(0x7E00A000)
 #define S3C64XX_PA_ADC		(0x7E00B000)
 #define S3C64XX_PA_SYSCON	(0x7E00F000)
 #define S3C64XX_PA_AC97		(0x7F001000)
@@ -124,5 +125,6 @@
 
 #define SAMSUNG_PA_ADC		S3C64XX_PA_ADC
 #define SAMSUNG_PA_CFCON	S3C64XX_PA_CFCON
+#define SAMSUNG_PA_KEYPAD	S3C64XX_PA_KEYPAD
 
 #endif /* __ASM_ARCH_6400_MAP_H */

arch/arm/mach-s3c64xx/mach-smdk6410.c

@@ -17,6 +17,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
@@ -67,6 +68,7 @@
 #include <plat/cpu.h>
 #include <plat/adc.h>
 #include <plat/ts.h>
+#include <plat/keypad.h>
 
 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
@@ -247,6 +249,25 @@ static struct s3c_ide_platdata smdk6410_ide_pdata __initdata = {
 	.setup_gpio	= s3c64xx_ide_setup_gpio,
 };
 
+static uint32_t smdk6410_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 smdk6410_keymap_data __initdata = {
+	.keymap		= smdk6410_keymap,
+	.keymap_size	= ARRAY_SIZE(smdk6410_keymap),
+};
+
+static struct samsung_keypad_platdata smdk6410_keypad_data __initdata = {
+	.keymap_data	= &smdk6410_keymap_data,
+	.rows		= 2,
+	.cols		= 8,
+};
+
 static struct map_desc smdk6410_iodesc[] = {};
 
 static struct platform_device *smdk6410_devices[] __initdata = {
@@ -262,6 +283,7 @@ static struct platform_device *smdk6410_devices[] __initdata = {
 	&s3c_device_ohci,
 	&s3c_device_usb_hsotg,
 	&s3c64xx_device_iisv4,
+	&samsung_device_keypad,
 
 #ifdef CONFIG_REGULATOR
 	&smdk6410_b_pwr_5v,
@@ -643,6 +665,8 @@ static void __init smdk6410_machine_init(void)
 	s3c_i2c1_set_platdata(NULL);
 	s3c_fb_set_platdata(&smdk6410_lcd_pdata);
 
+	samsung_keypad_set_platdata(&smdk6410_keypad_data);
+
 	s3c24xx_ts_set_platdata(&s3c_ts_platform);
 
 	/* configure nCS1 width to 16 bits */

arch/arm/mach-s3c64xx/setup-keypad.c

@@ -0,0 +1,34 @@
+/* linux/arch/arm/mach-s3c64xx/setup-keypad.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * GPIO configuration for S3C64XX 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 GPK pins to special-function 3: KP_ROW[x] */
+	end = S3C64XX_GPK(8 + rows);
+	for (gpio = S3C64XX_GPK(8); gpio < end; gpio++) {
+		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+
+	/* Set all the necessary GPL pins to special-function 3: KP_COL[x] */
+	end = S3C64XX_GPL(0 + cols);
+	for (gpio = S3C64XX_GPL(0); gpio < end; gpio++) {
+		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+	}
+}