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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 19:08:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 19:08:06 -0700
commit411f5c7a502769ccc0377c5ba36cb0b283847ba8 (patch)
tree2c3a29671e3f923de48c55f94194849264a7bf53 /arch/arm/mach-exynos4/setup-keypad.c
parent6d7ed21d17e640b120b902a314143e5ef4917a70 (diff)
parent9ced9f03d12d7539e86b0bff5bc750153c976c34 (diff)
Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm: (289 commits) davinci: DM644x EVM: register MUSB device earlier davinci: add spi devices on tnetv107x evm davinci: add ssp config for tnetv107x evm board davinci: add tnetv107x ssp platform device spi: add ti-ssp spi master driver mfd: add driver for sequencer serial port ARM: EXYNOS4: Implement Clock gating for System MMU ARM: EXYNOS4: Enhancement of System MMU driver ARM: EXYNOS4: Add support for gpio interrupts ARM: S5P: Add function to register gpio interrupt bank data ARM: S5P: Cleanup S5P gpio interrupt code ARM: EXYNOS4: Add missing GPYx banks ARM: S3C64XX: Fix section mismatch from cpufreq init ARM: EXYNOS4: Add keypad device to the SMDKV310 ARM: EXYNOS4: Update clocks for keypad ARM: EXYNOS4: Update keypad base address ARM: EXYNOS4: Add keypad device helpers ARM: EXYNOS4: Add support for SATA on ARMLEX4210 plat-nomadik: make GPIO interrupts work with cpuidle ApSleep mach-u300: define a dummy filter function for coh901318 ... Fix up various conflicts in - arch/arm/mach-exynos4/cpufreq.c - arch/arm/mach-mxs/gpio.c - drivers/net/Kconfig - drivers/tty/serial/Kconfig - drivers/tty/serial/Makefile - drivers/usb/gadget/fsl_mxc_udc.c - drivers/video/Kconfig
Diffstat (limited to 'arch/arm/mach-exynos4/setup-keypad.c')
-rw-r--r--arch/arm/mach-exynos4/setup-keypad.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos4/setup-keypad.c b/arch/arm/mach-exynos4/setup-keypad.c
new file mode 100644
index 00000000000..1ee0ebff111
--- /dev/null
+++ b/arch/arm/mach-exynos4/setup-keypad.c
@@ -0,0 +1,35 @@
+/* linux/arch/arm/mach-exynos4/setup-keypad.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * GPIO configuration for Exynos4 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)
+{
+ /* Keypads can be of various combinations, Just making sure */
+
+ 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));
+
+ /* Set all the necessary GPX3 pins: KP_ROW[8~] */
+ s3c_gpio_cfgrange_nopull(EXYNOS4_GPX3(0), (rows - 8),
+ S3C_GPIO_SFN(3));
+ } else {
+ /* Set all the necessary GPX2 pins: KP_ROW[x] */
+ s3c_gpio_cfgrange_nopull(EXYNOS4_GPX2(0), rows,
+ S3C_GPIO_SFN(3));
+ }
+
+ /* Set all the necessary GPX1 pins to special-function 3: KP_COL[x] */
+ s3c_gpio_cfgrange_nopull(EXYNOS4_GPX1(0), cols, S3C_GPIO_SFN(3));
+}