X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=arch%2Farm%2Fmach-omap2%2Fboard-4430sdp.c;h=1bed1e666a60d88130e62b45f8753d33f063614f;hb=98bb8c3e98267f2aa422bbafce3b734016e7ed02;hp=e379bef1ef407b08f03495d7c4b424c50f94527a;hpb=d58cc92bda765e62f28b12a8f4627ddee32978f0;p=firefly-linux-kernel-4.4.55.git

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index e379bef1ef40..1bed1e666a60 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 +41,8 @@
 #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 struct gpio_led sdp4430_gpio_leds[] = {
 	{
@@ -77,11 +80,47 @@ 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 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 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",
 	.id	= -1,
@@ -161,6 +200,7 @@ static struct platform_device sdp4430_lcd_device = {
 
 static struct platform_device *sdp4430_devices[] __initdata = {
 	&sdp4430_lcd_device,
+	&sdp4430_gpio_keys_device,
 	&sdp4430_leds_gpio,
 };
 
@@ -412,6 +452,11 @@ static struct i2c_board_info __initdata sdp4430_i2c_3_boardinfo[] = {
 		I2C_BOARD_INFO("tmp105", 0x48),
 	},
 };
+static struct i2c_board_info __initdata sdp4430_i2c_4_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("hmc5843", 0x1e),
+	},
+};
 static int __init omap4_i2c_init(void)
 {
 	/*
@@ -423,14 +468,36 @@ static int __init omap4_i2c_init(void)
 	omap_register_i2c_bus(2, 400, NULL, 0);
 	omap_register_i2c_bus(3, 400, sdp4430_i2c_3_boardinfo,
 				ARRAY_SIZE(sdp4430_i2c_3_boardinfo));
-	omap_register_i2c_bus(4, 400, NULL, 0);
+	omap_register_i2c_bus(4, 400, sdp4430_i2c_4_boardinfo,
+				ARRAY_SIZE(sdp4430_i2c_4_boardinfo));
 	return 0;
 }
+
+static void __init omap_sfh7741prox_init(void)
+{
+	int  error;
+
+	error = gpio_request(OMAP4_SFH7741_ENABLE_GPIO, "sfh7741");
+	if (error < 0) {
+		pr_err("%s:failed to request GPIO %d, error %d\n",
+			__func__, OMAP4_SFH7741_ENABLE_GPIO, error);
+		return;
+	}
+
+	error = gpio_direction_output(OMAP4_SFH7741_ENABLE_GPIO , 0);
+	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;
 
 	omap4_i2c_init();
+	omap_sfh7741prox_init();
 	platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices));
 	omap_serial_init();
 	omap4_twl6030_hsmmc_init(mmc);