ARM: tegra: enterprise: Add rear camera

[DO NOT INTEGRATE TO MAIN]
Add and enable rear camera sensor.
Support only one sensor for now.

Change-Id: Iee284bca42ffaf1d4b3b6de15caf72324e9c427e
Reviewed-on: http://git-master/r/37135
Tested-by: Jihoon Bang <jbang@nvidia.com>
Reviewed-by: Shail Dave <sdave@nvidia.com>

3 files changed, 164 insertions, 1 deletions

diff --git a/arch/arm/mach-tegra/board-enterprise-pinmux.c b/arch/arm/mach-tegra/board-enterprise-pinmux.c
index dc4a5c28e90d..a38552a83a3b 100644
--- a/arch/arm/mach-tegra/board-enterprise-pinmux.c
+++ b/arch/arm/mach-tegra/board-enterprise-pinmux.c
@@ -273,7 +273,7 @@ static __initdata struct tegra_pingroup_config enterprise_pinmux[] = {
 	DEFAULT_PINMUX(GMI_A17,         UARTD,           NORMAL,    NORMAL,     INPUT),
 	DEFAULT_PINMUX(GMI_A18,         UARTD,           NORMAL,    NORMAL,     INPUT),
 	DEFAULT_PINMUX(GMI_A19,         UARTD,           NORMAL,    NORMAL,     OUTPUT),
-	DEFAULT_PINMUX(CAM_MCLK,        VI_ALT2,         PULL_UP,   NORMAL,     INPUT),
+	DEFAULT_PINMUX(CAM_MCLK,        VI_ALT3,         NORMAL,    NORMAL,     INPUT),
 	DEFAULT_PINMUX(GPIO_PCC1,       RSVD1,           NORMAL,    NORMAL,     INPUT),
 	DEFAULT_PINMUX(GPIO_PBB0,       RSVD1,           NORMAL,    NORMAL,     INPUT),
 	DEFAULT_PINMUX(GPIO_PBB3,       VGP3,            NORMAL,    NORMAL,     INPUT),
diff --git a/arch/arm/mach-tegra/board-enterprise-sensors.c b/arch/arm/mach-tegra/board-enterprise-sensors.c
index 53cf704dfdf2..ad968031b2e7 100644
--- a/arch/arm/mach-tegra/board-enterprise-sensors.c
+++ b/arch/arm/mach-tegra/board-enterprise-sensors.c
@@ -19,10 +19,15 @@
  */
 
 #include <linux/i2c.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/mpu.h>
 #include <linux/nct1008.h>
+#include <linux/regulator/consumer.h>
+
 #include <mach/gpio.h>
+
+#include <media/ar0832_main.h>
 #include "cpu-tegra.h"
 #include "gpio-names.h"
 #include "board-enterprise.h"
@@ -138,11 +143,155 @@ static void enterprise_isl_init(void)
 				ARRAY_SIZE(enterprise_i2c0_isl_board_info));
 }
 
+
+static struct regulator *cam_reg = NULL;
+static struct regulator *csi_reg = NULL;
+
+static int enterprise_ar0832_power_on(void)
+{
+	int ret = 0;
+
+	csi_reg = regulator_get(NULL, "avdd_dsi_csi");
+	if (IS_ERR_OR_NULL(csi_reg)) {
+		pr_err("%s: get csi pwr err\n", __func__);
+		return PTR_ERR(cam_reg);
+	}
+
+	ret = regulator_enable(csi_reg);
+	if (ret) {
+		pr_err("%s: enable csi pwr err\n", __func__);
+		goto fail_regulator_csi_reg;
+	}
+
+	cam_reg = regulator_get(NULL, "vddio_cam");
+	if (IS_ERR_OR_NULL(cam_reg)) {
+		pr_err("%s: get cam pwr err\n", __func__);
+		return PTR_ERR(cam_reg);
+	}
+
+	ret = regulator_enable(cam_reg);
+	if (ret) {
+		pr_err("%s: enable cam pwr err\n", __func__);
+		goto fail_regulator_cam_reg;
+	}
+
+	pr_info("%s: enable 1.8V...\n", __func__);
+	gpio_set_value(CAM_LDO_1V8_EN_L_GPIO, 1);
+	mdelay(20);
+	pr_info("%s: enable 2.8V...\n", __func__);
+	gpio_set_value(CAM_LDO_2V8_EN_L_GPIO, 1);
+
+	gpio_set_value(CAM1_PWDN_GPIO, 1);
+	mdelay(5);
+	gpio_set_value(CAM1_RST_L_GPIO, 1);
+
+	return 0;
+
+fail_regulator_cam_reg:
+	regulator_put(cam_reg);
+fail_regulator_csi_reg:
+	regulator_put(csi_reg);
+
+	return ret;
+}
+
+static int enterprise_ar0832_power_off(void)
+{
+	if (!cam_reg)
+		regulator_put(cam_reg);
+	if (!csi_reg)
+		regulator_put(csi_reg);
+
+	gpio_set_value(CAM_LDO_2V8_EN_L_GPIO, 0);
+	mdelay(20);
+	gpio_set_value(CAM_LDO_1V8_EN_L_GPIO, 0);
+
+	return 0;
+}
+
+struct enterprise_cam_gpio {
+	int gpio;
+	const char *label;
+	int value;
+};
+
+#define TEGRA_CAMERA_GPIO(_gpio, _label, _value)	\
+	{						\
+		.gpio = _gpio,				\
+		.label = _label,				\
+		.value = _value,			\
+	}
+
+static struct enterprise_cam_gpio enterprise_cam_gpio_data[] = {
+	[0] = TEGRA_CAMERA_GPIO(CAM_LDO_1V8_EN_L_GPIO, "cam_ldo_1v8", 0),
+	[1] = TEGRA_CAMERA_GPIO(CAM_LDO_2V8_EN_L_GPIO, "cam_ldo_2v8", 0),
+	[2] = TEGRA_CAMERA_GPIO(CAM_CSI_MUX_SEL_GPIO, "cam_csi_sel", 1),
+
+	[3] = TEGRA_CAMERA_GPIO(CAM1_RST_L_GPIO, "cam1_rst_lo", 0),
+	[4] = TEGRA_CAMERA_GPIO(CAM1_PWDN_GPIO, "cam1_pwdn", 1),
+
+	[5] = TEGRA_CAMERA_GPIO(CAM2_RST_L_GPIO, "cam2_rst_lo", 0),
+	[6] = TEGRA_CAMERA_GPIO(CAM2_PWDN_GPIO, "cam2_pwdn", 1),
+
+	[7] = TEGRA_CAMERA_GPIO(CAM3_RST_L_GPIO, "cam3_rst_lo", 0),
+	[8] = TEGRA_CAMERA_GPIO(CAM3_PWDN_GPIO, "cam3_pwdn", 1),
+};
+
+struct ar0832_platform_data enterprise_ar0832_data = {
+	.power_on = enterprise_ar0832_power_on,
+	.power_off = enterprise_ar0832_power_off,
+};
+
+static struct i2c_board_info ar0832_i2c2_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("ar0832", 0x36),
+		.platform_data = &enterprise_ar0832_data,
+	},
+	{
+		I2C_BOARD_INFO("ar0832_focuser", 0x36),
+	},
+};
+
+static int enterprise_cam_init(void)
+{
+	int ret;
+	int i;
+
+	pr_info("%s:++\n", __func__);
+
+	for (i = 0; i < ARRAY_SIZE(enterprise_cam_gpio_data); i++) {
+		ret = gpio_request(enterprise_cam_gpio_data[i].gpio,
+				   enterprise_cam_gpio_data[i].label);
+		if (ret < 0) {
+			pr_err("%s: gpio_request failed for gpio #%d\n",
+				__func__, i);
+			goto fail_free_gpio;
+		}
+		gpio_direction_output(enterprise_cam_gpio_data[i].gpio,
+				      enterprise_cam_gpio_data[i].value);
+		gpio_export(enterprise_cam_gpio_data[i].gpio, false);
+		tegra_gpio_enable(enterprise_cam_gpio_data[i].gpio);
+	}
+
+	i2c_register_board_info(2, ar0832_i2c2_boardinfo,
+		ARRAY_SIZE(ar0832_i2c2_boardinfo));
+
+	return 0;
+
+fail_free_gpio:
+	pr_err("%s enterprise_cam_init failed!\n", __func__);
+	while (i--)
+		gpio_free(enterprise_cam_gpio_data[i].gpio);
+	return ret;
+}
+
 int __init enterprise_sensors_init(void)
 {
+	int ret;
 	enterprise_isl_init();
 	enterprise_nct1008_init();
 	enterprise_mpuirq_init();
+	enterprise_cam_init();
 
 	return 0;
 }
diff --git a/arch/arm/mach-tegra/board-enterprise.h b/arch/arm/mach-tegra/board-enterprise.h
index 58f8b8bb65a0..5520083b2149 100644
--- a/arch/arm/mach-tegra/board-enterprise.h
+++ b/arch/arm/mach-tegra/board-enterprise.h
@@ -56,4 +56,18 @@ int enterprise_suspend_init(void);
 #define TPS80031_IRQ_BASE	TEGRA_NR_IRQS
 #define TPS80031_IRQ_END	(TPS80031_IRQ_BASE + 24)
 
+/*****************Camera GPIOs ******************/
+#define CAM_CSI_MUX_SEL_GPIO	TEGRA_GPIO_PM3
+#define CAM_LDO_1V8_EN_L_GPIO	TEGRA_GPIO_PF1
+#define CAM_LDO_2V8_EN_L_GPIO	TEGRA_GPIO_PM7
+#define CAM1_RST_L_GPIO		TEGRA_GPIO_PM5 /*REAR RIGHT*/
+#define CAM1_PWDN_GPIO		TEGRA_GPIO_PF3 /*REAR RIGHT*/
+#define CAM2_RST_L_GPIO		TEGRA_GPIO_PF4 /*REAR LEFT*/
+#define CAM2_PWDN_GPIO		TEGRA_GPIO_PF2 /*REAR LEFT*/
+#define CAM3_RST_L_GPIO		TEGRA_GPIO_PM2 /*FRONT*/
+#define CAM3_PWDN_GPIO		TEGRA_GPIO_PN4 /*FRONT*/
+#define CAM_FLASH_EN_GPIO	TEGRA_GPIO_PBB3
+#define CAM_FLASH_MAX_TORCH_AMP	7
+#define CAM_FLASH_MAX_FLASH_AMP	7
+
 #endif