ARM: pxa168/teton bga: added keypad support

Support for Matrix keypad ESC, ENTER, LEFT, and RIGHT

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/arch/arm/mach-mmp/teton_bga.c b/arch/arm/mach-mmp/teton_bga.c
index 4e024c7fb98..f556b205975 100644
--- a/arch/arm/mach-mmp/teton_bga.c
+++ b/arch/arm/mach-mmp/teton_bga.c
@@ -16,6 +16,8 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <linux/input.h>
+#include <plat/pxa27x_keypad.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -30,6 +32,27 @@ static unsigned long teton_bga_pin_config[] __initdata = {
         /* UART1 */
         GPIO107_UART1_TXD,
         GPIO108_UART1_RXD,
+
+        /* Keypad */
+        GPIO109_KP_MKIN1,
+        GPIO110_KP_MKIN0,
+        GPIO111_KP_MKOUT7,
+        GPIO112_KP_MKOUT6,
+};
+
+static unsigned int teton_bga_matrix_key_map[] = {
+        KEY(0, 6, KEY_ESC),
+        KEY(0, 7, KEY_ENTER),
+        KEY(1, 6, KEY_LEFT),
+        KEY(1, 7, KEY_RIGHT),
+};
+
+static struct pxa27x_keypad_platform_data teton_bga_keypad_info __initdata = {
+        .matrix_key_rows        = 2,
+        .matrix_key_cols        = 8,
+        .matrix_key_map         = teton_bga_matrix_key_map,
+        .matrix_key_map_size    = ARRAY_SIZE(teton_bga_matrix_key_map),
+        .debounce_interval      = 30,
 };
 
 static void __init teton_bga_init(void)
@@ -38,6 +61,7 @@ static void __init teton_bga_init(void)
 
         /* on-chip devices */
         pxa168_add_uart(1);
+        pxa168_add_keypad(&teton_bga_keypad_info);
 }
 
 MACHINE_START(TETON_BGA, "PXA168-based Teton BGA Development Platform")