leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: EXYNOS4: fix incorrect pad configuration for keypad row lines

Browse Source 
The keypad controller requires a external pull-up for all the keypad
row lines. Fix the incorrect pad configuration for keypad controller
row lines by enabling the pad pull-up for the all row lines of the
keypad controller.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Thomas Abraham 2011-09-15 14:34:03 +09:00 committed by Kukjin Kim
parent 3a0ec25954
commit d03c35939d
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm/mach-exynos4/setup-keypad.c
View File

@ -19,15 +19,16 @@ void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
if (rows > 8) {
/* Set all the necessary GPX2 pins: KP_ROW[0~7] */
s3c_gpio_cfgrange_nopull(EXYNOS4_GPX2(0), 8, S3C_GPIO_SFN(3));
s3c_gpio_cfgall_range(EXYNOS4_GPX2(0), 8, S3C_GPIO_SFN(3),
S3C_GPIO_PULL_UP);
/* Set all the necessary GPX3 pins: KP_ROW[8~] */
s3c_gpio_cfgrange_nopull(EXYNOS4_GPX3(0), (rows - 8),
S3C_GPIO_SFN(3));
s3c_gpio_cfgall_range(EXYNOS4_GPX3(0), (rows - 8),
S3C_GPIO_SFN(3), S3C_GPIO_PULL_UP);
} else {
/* Set all the necessary GPX2 pins: KP_ROW[x] */
s3c_gpio_cfgrange_nopull(EXYNOS4_GPX2(0), rows,
S3C_GPIO_SFN(3));
s3c_gpio_cfgall_range(EXYNOS4_GPX2(0), rows, S3C_GPIO_SFN(3),
S3C_GPIO_PULL_UP);
}
/* Set all the necessary GPX1 pins to special-function 3: KP_COL[x] */