[RFC PATCH] Board support for the the GPIO keys
From: Shubhrajyoti D <hidden>
Date: 2010-08-19 11:42:10
Also in:
linux-omap
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Board support for the GPIO keys. The proximity sensor is connected to GPIO and is registered as a GPIO key. Signed-off-by: Shubhrajyoti D <redacted> --- arch/arm/mach-omap2/board-4430sdp.c | 56 +++++++++++++++++++++++++++++++++++ 1 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 9447644..7f619bf 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c@@ -20,6 +20,7 @@ #include <linux/usb/otg.h> #include <linux/spi/spi.h> #include <linux/i2c/twl.h> +#include <linux/gpio_keys.h> #include <linux/regulator/machine.h> #include <linux/leds.h>
@@ -40,6 +41,10 @@ #define ETH_KS8851_IRQ 34 #define ETH_KS8851_POWER_ON 48 #define ETH_KS8851_QUART 138 +#define OMAP4_SFH7741_SENSOR_OUTPUT_GPIO 184 +#define OMAP4_SFH7741_ENABLE_GPIO 188 +static int omap_prox_activate(struct device *dev); +static void omap_prox_deactivate(struct device *dev); static struct gpio_led sdp4430_gpio_leds[] = { {
@@ -76,11 +81,33 @@ static struct gpio_led sdp4430_gpio_leds[] = { }, }; +static struct gpio_keys_button sdp4430_gpio_keys[] = { + { + .desc = "Proximity Sensor", + .type = EV_SW, + .code = SW_FRONT_PROXIMITY, + .gpio = OMAP4_SFH7741_SENSOR_OUTPUT_GPIO, + .active_low = 0, + } +}; static struct gpio_led_platform_data sdp4430_led_data = { .leds = sdp4430_gpio_leds, .num_leds = ARRAY_SIZE(sdp4430_gpio_leds), }; +static struct gpio_keys_platform_data sdp4430_gpio_keys_data = { + .buttons = sdp4430_gpio_keys, + .nbuttons = ARRAY_SIZE(sdp4430_gpio_keys), + .enable = omap_prox_activate, + .disable = omap_prox_deactivate, +}; +static struct platform_device sdp4430_gpio_keys_device = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &sdp4430_gpio_keys_data, + }, +}; static struct platform_device sdp4430_leds_gpio = { .name = "leds-gpio",
@@ -161,6 +188,7 @@ static struct platform_device sdp4430_lcd_device = { static struct platform_device *sdp4430_devices[] __initdata = { &sdp4430_lcd_device, + &sdp4430_gpio_keys_device, &sdp4430_leds_gpio, };
@@ -426,6 +454,33 @@ static int __init omap4_i2c_init(void) omap_register_i2c_bus(4, 400, NULL, 0); return 0; } +static int omap_prox_activate(struct device *dev) +{ + gpio_set_value(OMAP4_SFH7741_ENABLE_GPIO , 1); + return 0; +} +static void omap_prox_deactivate(struct device *dev) +{ + gpio_set_value(OMAP4_SFH7741_ENABLE_GPIO , 0); +} +static void omap_sfh7741prox_init(void) +{ + int error; + + error = gpio_request(OMAP4_SFH7741_ENABLE_GPIO, "sfh7741"); + if (error < 0) { + pr_err("failed to request GPIO %d, error %d\n", + OMAP4_SFH7741_ENABLE_GPIO, error); + return; + } + + error = gpio_direction_output(OMAP4_SFH7741_ENABLE_GPIO , 1); + if (error < 0) { + pr_err("%s: GPIO configuration failed: GPIO %d,error %d\n",\ + __func__, OMAP4_SFH7741_ENABLE_GPIO, error); + gpio_free(OMAP4_SFH7741_ENABLE_GPIO); + } +} static void __init omap_4430sdp_init(void) { int status;
@@ -448,6 +503,7 @@ static void __init omap_4430sdp_init(void) spi_register_board_info(sdp4430_spi_board_info, ARRAY_SIZE(sdp4430_spi_board_info)); } + omap_sfh7741prox_init(); } static void __init omap_4430sdp_map_io(void)
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1.7.0.4