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authorNaveen Krishna Ch <ch.naveen@samsung.com>2010-06-22 07:39:18 +0900
committerKukjin Kim <kgene.kim@samsung.com>2010-08-06 21:28:30 +0900
commit290d0983b86f6243beffaa3ddb02c14adc30f02a (patch)
treed6cc9963c61ea941928341ecd7ed5987c7953730 /arch/arm/mach-s3c64xx/setup-keypad.c
parent995c48adde09e04298036501df9dac87661fa66c (diff)
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>
Diffstat (limited to 'arch/arm/mach-s3c64xx/setup-keypad.c')
-rw-r--r--arch/arm/mach-s3c64xx/setup-keypad.c34
1 files changed, 34 insertions, 0 deletions
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);
+ }
+}