diff options
author | Naveen Krishna Ch <ch.naveen@samsung.com> | 2010-06-21 18:39:18 -0400 |
---|---|---|
committer | Kukjin Kim <kgene.kim@samsung.com> | 2010-08-06 08:28:30 -0400 |
commit | 290d0983b86f6243beffaa3ddb02c14adc30f02a (patch) | |
tree | d6cc9963c61ea941928341ecd7ed5987c7953730 /arch/arm/mach-s3c64xx/setup-keypad.c | |
parent | 995c48adde09e04298036501df9dac87661fa66c (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.c | 34 |
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 @@ | |||
1 | /* linux/arch/arm/mach-s3c64xx/setup-keypad.c | ||
2 | * | ||
3 | * Copyright (c) 2010 Samsung Electronics Co., Ltd. | ||
4 | * http://www.samsung.com/ | ||
5 | * | ||
6 | * GPIO configuration for S3C64XX KeyPad device | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | |||
13 | #include <linux/gpio.h> | ||
14 | #include <plat/gpio-cfg.h> | ||
15 | |||
16 | void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols) | ||
17 | { | ||
18 | unsigned int gpio; | ||
19 | unsigned int end; | ||
20 | |||
21 | /* Set all the necessary GPK pins to special-function 3: KP_ROW[x] */ | ||
22 | end = S3C64XX_GPK(8 + rows); | ||
23 | for (gpio = S3C64XX_GPK(8); gpio < end; gpio++) { | ||
24 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); | ||
25 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
26 | } | ||
27 | |||
28 | /* Set all the necessary GPL pins to special-function 3: KP_COL[x] */ | ||
29 | end = S3C64XX_GPL(0 + cols); | ||
30 | for (gpio = S3C64XX_GPL(0); gpio < end; gpio++) { | ||
31 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); | ||
32 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
33 | } | ||
34 | } | ||