arm: tegra: kai: add ov2710 front camera

Bug 913259

Change-Id: Idc26f500390b476942819289949f042bc25ae4a6
Signed-off-by: Peter Zu <pzu@nvidia.com>
Signed-off-by: Johnny Qiu <joqiu@nvidia.com>
Signed-off-by: Hao Tang <htang@nvidia.com>
Reviewed-on: http://git-master/r/82762
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>

4 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index f2566ec054af..b89d656a75f6 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -183,6 +183,7 @@ obj-${CONFIG_MACH_KAI}                  += board-kai-panel.o
 obj-${CONFIG_MACH_KAI}                  += board-kai-pinmux.o
 obj-${CONFIG_MACH_KAI}                  += board-kai-power.o
 obj-${CONFIG_MACH_KAI}                  += board-kai-sdhci.o
+obj-${CONFIG_MACH_KAI}                  += board-kai-sensors.o
 
 obj-${CONFIG_TEGRA_BB_XMM_POWER}        += baseband-xmm-power.o
 obj-${CONFIG_TEGRA_BB_XMM_POWER2}       += baseband-xmm-power2.o
diff --git a/arch/arm/mach-tegra/board-kai-sensors.c b/arch/arm/mach-tegra/board-kai-sensors.c
new file mode 100644
index 000000000000..70289650d086
--- /dev/null
+++ b/arch/arm/mach-tegra/board-kai-sensors.c
@@ -0,0 +1,137 @@
+
+/*
+ * arch/arm/mach-tegra/board-kai-sensors.c
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/regulator/consumer.h>
+#include <asm/mach-types.h>
+#include <mach/gpio.h>
+#include <media/ov2710.h>
+#include "board.h"
+#include "board-kai.h"
+#include "cpu-tegra.h"
+
+static struct regulator *kai_1v8_cam3;
+static struct regulator *kai_vdd_cam3;
+
+static int kai_camera_init(void)
+{
+	int ret;
+
+	tegra_gpio_enable(CAM2_POWER_DWN_GPIO);
+	ret = gpio_request(CAM2_POWER_DWN_GPIO, "cam2_power_en");
+	if (ret < 0) {
+		pr_err("%s: gpio_request failed for gpio %s\n",
+			__func__, "CAM2_POWER_DWN_GPIO");
+	}
+
+	gpio_direction_output(CAM2_POWER_DWN_GPIO, 1);
+	mdelay(10);
+
+	tegra_gpio_enable(CAM2_RST_GPIO);
+	ret = gpio_request(CAM2_RST_GPIO, "cam2_reset");
+	if (ret < 0) {
+		pr_err("%s: gpio_request failed for gpio %s\n",
+			__func__, "CAM2_RST_GPIO");
+	}
+
+	gpio_direction_output(CAM2_RST_GPIO, 0);
+	mdelay(5);
+
+	return 0;
+}
+
+static int kai_ov2710_power_on(void)
+{
+	gpio_direction_output(CAM2_POWER_DWN_GPIO, 0);
+	mdelay(10);
+
+	if (kai_vdd_cam3 == NULL) {
+		kai_vdd_cam3 = regulator_get(NULL, "vdd_cam3");
+		if (WARN_ON(IS_ERR(kai_vdd_cam3))) {
+			pr_err("%s: couldn't get regulator vdd_cam3: %d\n",
+				__func__, PTR_ERR(kai_vdd_cam3));
+			goto reg_get_vdd_cam3_fail;
+		}
+	}
+	regulator_enable(kai_vdd_cam3);
+
+	if (kai_1v8_cam3 == NULL) {
+		kai_1v8_cam3 = regulator_get(NULL, "vdd_1v8_cam3");
+		if (WARN_ON(IS_ERR(kai_1v8_cam3))) {
+			pr_err("%s: couldn't get regulator vdd_1v8_cam3: %d\n",
+				__func__, PTR_ERR(kai_1v8_cam3));
+			goto reg_get_vdd_1v8_cam3_fail;
+		}
+	}
+	regulator_enable(kai_1v8_cam3);
+	mdelay(5);
+
+	gpio_direction_output(CAM2_RST_GPIO, 1);
+	mdelay(10);
+
+	return 0;
+
+reg_get_vdd_1v8_cam3_fail:
+	kai_1v8_cam3 = NULL;
+	regulator_put(kai_vdd_cam3);
+
+reg_get_vdd_cam3_fail:
+	kai_vdd_cam3 = NULL;
+
+	return -ENODEV;
+}
+
+static int kai_ov2710_power_off(void)
+{
+	gpio_direction_output(CAM2_POWER_DWN_GPIO, 1);
+
+	gpio_direction_output(CAM2_RST_GPIO, 0);
+
+	if (kai_1v8_cam3)
+		regulator_disable(kai_1v8_cam3);
+	if (kai_vdd_cam3)
+		regulator_disable(kai_vdd_cam3);
+
+	return 0;
+}
+
+struct ov2710_platform_data kai_ov2710_data = {
+	.power_on = kai_ov2710_power_on,
+	.power_off = kai_ov2710_power_off,
+};
+
+static struct i2c_board_info kai_i2c2_board_info[] = {
+	{
+		I2C_BOARD_INFO("ov2710", 0x36),
+		.platform_data = &kai_ov2710_data,
+	},
+};
+
+int __init kai_sensors_init(void)
+{
+	kai_camera_init();
+
+	i2c_register_board_info(2, kai_i2c2_board_info,
+		ARRAY_SIZE(kai_i2c2_board_info));
+
+	return 0;
+}
diff --git a/arch/arm/mach-tegra/board-kai.c b/arch/arm/mach-tegra/board-kai.c
index 79467774329a..a1b7c8c9abfe 100644
--- a/arch/arm/mach-tegra/board-kai.c
+++ b/arch/arm/mach-tegra/board-kai.c
@@ -686,6 +686,7 @@ static void __init tegra_kai_init(void)
 	kai_keys_init();
 	kai_panel_init();
 	kai_bt_st();
+	kai_sensors_init();
 	kai_pins_state_init();
 	tegra_release_bootloader_fb();
 #ifdef CONFIG_TEGRA_WDT_RECOVERY
diff --git a/arch/arm/mach-tegra/board-kai.h b/arch/arm/mach-tegra/board-kai.h
index b09761e60caa..183fa3821dbf 100644
--- a/arch/arm/mach-tegra/board-kai.h
+++ b/arch/arm/mach-tegra/board-kai.h
@@ -41,6 +41,9 @@
 #define MAX77663_GPIO_BASE	TEGRA_NR_GPIOS
 #define MAX77663_GPIO_END	(MAX77663_GPIO_BASE + MAX77663_GPIO_NR)
 
+/* CAMERA RELATED GPIOs on KAI */
+#define CAM2_RST_GPIO		TEGRA_GPIO_PBB4
+#define CAM2_POWER_DWN_GPIO	TEGRA_GPIO_PBB6
 /* Audio-related GPIOs */
 #define TEGRA_GPIO_CDC_IRQ		TEGRA_GPIO_PW3
 #define TEGRA_GPIO_SPKR_EN		-1
@@ -63,6 +66,7 @@ int kai_suspend_init(void);
 int kai_sdhci_init(void);
 int kai_pinmux_init(void);
 int kai_panel_init(void);
+int kai_sensors_init(void);
 int kai_keys_init(void);
 int kai_pins_state_init(void);
 int kai_power_off_init(void);