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>

6 files changed, 74 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index 3b632e4ec1a6..071e8a1e0765 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/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
 
diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile
index aa5c36772b1a..48d3dfac8dd7 100644
--- a/arch/arm/mach-s3c64xx/Makefile
+++ b/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
diff --git a/arch/arm/mach-s3c64xx/clock.c b/arch/arm/mach-s3c64xx/clock.c
index 3999a18404b5..7e03f0ae2fc8 100644
--- a/arch/arm/mach-s3c64xx/clock.c
+++ b/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,
diff --git a/arch/arm/mach-s3c64xx/include/mach/map.h b/arch/arm/mach-s3c64xx/include/mach/map.h
index 1caaa5f25f8d..a1f13f02c841 100644
--- a/arch/arm/mach-s3c64xx/include/mach/map.h
+++ b/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 */
diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-s3c64xx/mach-smdk6410.c
index 7fd38e9dcfca..b5d78616c774 100644
--- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
+++ b/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 */
diff --git a/arch/arm/mach-s3c64xx/setup-keypad.c b/arch/arm/mach-s3c64xx/setup-keypad.c
new file mode 100644
index 000000000000..abc34e4e1a93
--- /dev/null
+++ b/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);
+        }
+}