This adds support for camera interface with the support for
following sensors:
- OV5640
- OV5650
Signed-off-by: Sergio Aguirre <saaguirre@xxxxxx>
---
arch/arm/mach-omap2/Kconfig | 16 +
arch/arm/mach-omap2/Makefile | 2 +
arch/arm/mach-omap2/board-4430sdp-camera.c | 415 ++++++++++++++++++++++++++++
arch/arm/mach-omap2/board-4430sdp.c | 20 ++
4 files changed, 453 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-4430sdp-camera.c
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 8141b76..54645aa 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -335,6 +335,22 @@ config MACH_OMAP_4430SDP
select OMAP_PACKAGE_CBS
select REGULATOR_FIXED_VOLTAGE if REGULATOR
+config MACH_OMAP_4430SDP_CAMERA_SUPPORT
+ bool "OMAP 4430 SDP board Camera support"
+ depends on MACH_OMAP_4430SDP
+ select MEDIA_SUPPORT
+ select MEDIA_CONTROLLER
+ select VIDEO_DEV
+ select VIDEO_V4L2_SUBDEV_API
+ select V4L_PLATFORM_DRIVERS
+ select VIDEO_OMAP4
+ select VIDEO_OV5640
+ select VIDEO_OV5650
+ help
+ Enable Camera HW support for OMAP 4430 SDP board
+ This is for using the OMAP4 ISS CSI2A Camera sensor
+ interface.
+
config MACH_OMAP4_PANDA
bool "OMAP4 Panda Board"
default y
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 49f92bc..ebd8f63 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -239,6 +239,8 @@ obj-$(CONFIG_MACH_TI8148EVM) += board-ti8168evm.o
# Platform specific device init code
+obj-$(CONFIG_MACH_OMAP_4430SDP_CAMERA_SUPPORT) += board-4430sdp-camera.o
+
omap-flash-$(CONFIG_MTD_NAND_OMAP2) := board-flash.o
omap-flash-$(CONFIG_MTD_ONENAND_OMAP2) := board-flash.o
obj-y += $(omap-flash-y) $(omap-flash-m)
diff --git a/arch/arm/mach-omap2/board-4430sdp-camera.c b/arch/arm/mach-omap2/board-4430sdp-camera.c
new file mode 100644
index 0000000..9a8881f
--- /dev/null
+++ b/arch/arm/mach-omap2/board-4430sdp-camera.c
@@ -0,0 +1,415 @@
+#include <linux/gpio.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/i2c/twl.h>
+#include <linux/mfd/twl6040.h>
+#include <linux/regulator/consumer.h>
+
+#include <plat/i2c.h>
+#include <plat/omap-pm.h>
+
+#include <asm/mach-types.h>
+
+#include <media/ov5640.h>
+#include <media/ov5650.h>
+
+#include "devices.h"
+#include "../../../drivers/media/video/omap4iss/iss.h"
+
+#include "control.h"
+#include "mux.h"
+
+#define OMAP4430SDP_GPIO_CAM_PDN_B 38
+#define OMAP4430SDP_GPIO_CAM_PDN_C 39
+
+static struct clk *sdp4430_cam1_aux_clk;
+static struct clk *sdp4430_cam2_aux_clk;
+static struct regulator *sdp4430_cam2pwr_reg;
+
+static int sdp4430_ov_cam1_power(struct v4l2_subdev *subdev, int on)
+{
+ struct device *dev = subdev->v4l2_dev->dev;
+ int ret;
+
+ if (on) {
+ if (!regulator_is_enabled(sdp4430_cam2pwr_reg)) {
+ ret = regulator_enable(sdp4430_cam2pwr_reg);
+ if (ret) {
+ dev_err(dev,
+ "Error in enabling sensor power regulator 'cam2pwr'\n");
+ return ret;
+ }
+
+ msleep(50);
+ }
+
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_B, 1);
+ msleep(10);
+ ret = clk_enable(sdp4430_cam1_aux_clk); /* Enable XCLK */
+ if (ret) {
+ dev_err(dev,
+ "Error in clk_enable() in %s(%d)\n",
+ __func__, on);
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_B, 0);
+ return ret;
+ }
+ msleep(10);
+ } else {
+ clk_disable(sdp4430_cam1_aux_clk);
+ msleep(1);
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_B, 0);
+ if (regulator_is_enabled(sdp4430_cam2pwr_reg)) {
+ ret = regulator_disable(sdp4430_cam2pwr_reg);
+ if (ret) {
+ dev_err(dev,
+ "Error in disabling sensor power regulator 'cam2pwr'\n");
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int sdp4430_ov_cam2_power(struct v4l2_subdev *subdev, int on)
+{
+ struct device *dev = subdev->v4l2_dev->dev;
+ int ret;
+
+ if (on) {
+ u8 gpoctl = 0;
+
+ ret = regulator_enable(sdp4430_cam2pwr_reg);
+ if (ret) {
+ dev_err(dev,
+ "Error in enabling sensor power regulator 'cam2pwr'\n");
+ return ret;
+ }
+
+ msleep(50);
+
+ if (twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &gpoctl,
+ TWL6040_REG_GPOCTL))
+ return -ENODEV;
+ if (twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE,
+ gpoctl | TWL6040_GPO3,
+ TWL6040_REG_GPOCTL))
+ return -ENODEV;
+
+ msleep(10);
+
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_C, 1);
+ msleep(10);
+ ret = clk_enable(sdp4430_cam2_aux_clk); /* Enable XCLK */
+ if (ret) {
+ dev_err(dev,
+ "Error in clk_enable() in %s(%d)\n",
+ __func__, on);
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_C, 0);
+ return ret;
+ }
+ msleep(10);
+ } else {
+ clk_disable(sdp4430_cam2_aux_clk);
+ msleep(1);
+ gpio_set_value(OMAP4430SDP_GPIO_CAM_PDN_C, 0);
+ if (regulator_is_enabled(sdp4430_cam2pwr_reg)) {
+ ret = regulator_disable(sdp4430_cam2pwr_reg);
+ if (ret) {
+ dev_err(dev,
+ "Error in disabling sensor power regulator 'cam2pwr'\n");
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+#define OV5640_I2C_ADDRESS (0x3C)
+
+static struct ov5640_platform_data ov5640_cam1_platform_data = {
+ .s_power = sdp4430_ov_cam1_power,
+};
+
+static struct i2c_board_info ov5640_cam1_i2c_device = {
+ I2C_BOARD_INFO("ov5640", OV5640_I2C_ADDRESS),
+ .platform_data = &ov5640_cam1_platform_data,
+};
+
+static struct ov5640_platform_data ov5640_cam2_platform_data = {
+ .s_power = sdp4430_ov_cam2_power,
+};
+
+static struct i2c_board_info ov5640_cam2_i2c_device = {
+ I2C_BOARD_INFO("ov5640", OV5640_I2C_ADDRESS),
+ .platform_data = &ov5640_cam2_platform_data,
+};
+
+#define OV5650_I2C_ADDRESS (0x36)
+
+static struct ov5650_platform_data ov5650_cam1_platform_data = {
+ .s_power = sdp4430_ov_cam1_power,
+};
+
+static struct i2c_board_info ov5650_cam1_i2c_device = {
+ I2C_BOARD_INFO("ov5650", OV5650_I2C_ADDRESS),
+ .platform_data = &ov5650_cam1_platform_data,
+};
+
+static struct ov5650_platform_data ov5650_cam2_platform_data = {
+ .s_power = sdp4430_ov_cam2_power,
+};
+
+static struct i2c_board_info ov5650_cam2_i2c_device = {
+ I2C_BOARD_INFO("ov5650", OV5650_I2C_ADDRESS),
+ .platform_data = &ov5650_cam2_platform_data,
+};
+
+static struct iss_subdev_i2c_board_info ov5640_cam1_subdevs[] = {
+ {
+ .board_info = &ov5640_cam1_i2c_device,
+ .i2c_adapter_id = 2,
+ },
+ { NULL, 0, },
+};
+
+static struct iss_subdev_i2c_board_info ov5650_cam1_subdevs[] = {
+ {
+ .board_info = &ov5650_cam1_i2c_device,
+ .i2c_adapter_id = 2,
+ },
+ { NULL, 0, },
+};
+
+static struct iss_subdev_i2c_board_info ov5640_cam2_subdevs[] = {
+ {
+ .board_info = &ov5640_cam2_i2c_device,
+ .i2c_adapter_id = 3,
+ },
+ { NULL, 0, },
+};
+
+static struct iss_subdev_i2c_board_info ov5650_cam2_subdevs[] = {
+ {
+ .board_info = &ov5650_cam2_i2c_device,
+ .i2c_adapter_id = 3,
+ },
+ { NULL, 0, },
+};
+
+static struct iss_v4l2_subdevs_group sdp4430_camera_subdevs[] = {
+ {
+ .subdevs = ov5640_cam1_subdevs,
+ .interface = ISS_INTERFACE_CSI2B_PHY2,
+ .bus = { .csi2 = {
+ .lanecfg = {
+ .clk = {
+ .pol = 0,
+ .pos = 1,
+ },
+ .data[0] = {
+ .pol = 0,
+ .pos = 2,
+ },
+ },
+ } },
+ },
+ {
+ .subdevs = ov5650_cam1_subdevs,
+ .interface = ISS_INTERFACE_CSI2B_PHY2,
+ .bus = { .csi2 = {
+ .lanecfg = {
+ .clk = {
+ .pol = 0,
+ .pos = 1,
+ },
+ .data[0] = {
+ .pol = 0,
+ .pos = 2,
+ },
+ },
+ } },
+ },
+ {
+ .subdevs = ov5640_cam2_subdevs,
+ .interface = ISS_INTERFACE_CSI2A_PHY1,
+ .bus = { .csi2 = {
+ .lanecfg = {
+ .clk = {
+ .pol = 0,
+ .pos = 1,
+ },
+ .data[0] = {
+ .pol = 0,
+ .pos = 2,
+ },
+ },
+ } },
+ },
+ {
+ .subdevs = ov5650_cam2_subdevs,
+ .interface = ISS_INTERFACE_CSI2A_PHY1,
+ .bus = { .csi2 = {
+ .lanecfg = {
+ .clk = {
+ .pol = 0,
+ .pos = 1,
+ },
+ .data[0] = {
+ .pol = 0,
+ .pos = 2,
+ },
+ },
+ } },
+ },
+ { },
+};
+
+static void sdp4430_omap4iss_set_constraints(struct iss_device *iss, bool enable)
+{
+ if (!iss)
+ return;
+
+ /* FIXME: Look for something more precise as a good throughtput limit */
+ omap_pm_set_min_bus_tput(iss->dev, OCP_INITIATOR_AGENT,
+ enable ? 800000 : -1);
+}
+
+static struct iss_platform_data sdp4430_iss_platform_data = {
+ .subdevs = sdp4430_camera_subdevs,
+ .set_constraints = sdp4430_omap4iss_set_constraints,
+};
+
+static struct omap_device_pad omap4iss_pads[] = {
+ /* CSI2-A */
+ {
+ .name = "csi21_dx0.csi21_dx0",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi21_dy0.csi21_dy0",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi21_dx1.csi21_dx1",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi21_dy1.csi21_dy1",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi21_dx2.csi21_dx2",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi21_dy2.csi21_dy2",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ /* CSI2-B */
+ {
+ .name = "csi22_dx0.csi22_dx0",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi22_dy0.csi22_dy0",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi22_dx1.csi22_dx1",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+ {
+ .name = "csi22_dy1.csi22_dy1",
+ .enable = OMAP_MUX_MODE0 | OMAP_INPUT_EN,
+ },
+};
+
+static struct omap_board_data omap4iss_data = {
+ .id = 1,
+ .pads = omap4iss_pads,
+ .pads_cnt = ARRAY_SIZE(omap4iss_pads),
+};
+
+static int __init sdp4430_camera_init(void)
+{
+ if (!machine_is_omap_4430sdp())
+ return 0;
+
+ sdp4430_cam2pwr_reg = regulator_get(NULL, "cam2pwr");
+ if (IS_ERR(sdp4430_cam2pwr_reg)) {
+ printk(KERN_ERR "Unable to get 'cam2pwr' regulator for sensor power\n");
+ return -ENODEV;
+ }
+
+ if (regulator_set_voltage(sdp4430_cam2pwr_reg, 2600000, 3100000)) {
+ printk(KERN_ERR "Unable to set valid 'cam2pwr' regulator"
+ " voltage range to: 2.6V ~ 3.1V\n");
+ regulator_put(sdp4430_cam2pwr_reg);
+ return -ENODEV;
+ }
+
+ sdp4430_cam1_aux_clk = clk_get(NULL, "auxclk2_ck");
+ if (IS_ERR(sdp4430_cam1_aux_clk)) {
+ printk(KERN_ERR "Unable to get auxclk2_ck\n");
+ regulator_put(sdp4430_cam2pwr_reg);
+ return -ENODEV;
+ }
+
+ if (clk_set_rate(sdp4430_cam1_aux_clk,
+ clk_round_rate(sdp4430_cam1_aux_clk, 24000000))) {
+ clk_put(sdp4430_cam1_aux_clk);
+ regulator_put(sdp4430_cam2pwr_reg);
+ return -EINVAL;
+ }
+
+ sdp4430_cam2_aux_clk = clk_get(NULL, "auxclk3_ck");
+ if (IS_ERR(sdp4430_cam2_aux_clk)) {
+ printk(KERN_ERR "Unable to get auxclk3_ck\n");
+ clk_put(sdp4430_cam1_aux_clk);
+ regulator_put(sdp4430_cam2pwr_reg);
+ return -ENODEV;
+ }
+
+ if (clk_set_rate(sdp4430_cam2_aux_clk,
+ clk_round_rate(sdp4430_cam2_aux_clk, 24000000))) {
+ clk_put(sdp4430_cam1_aux_clk);
+ clk_put(sdp4430_cam2_aux_clk);
+ regulator_put(sdp4430_cam2pwr_reg);
+ return -EINVAL;
+ }
+
+ omap_mux_init_gpio(OMAP4430SDP_GPIO_CAM_PDN_B, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(OMAP4430SDP_GPIO_CAM_PDN_C, OMAP_PIN_OUTPUT);
+
+ /* Init FREF_CLK2_OUT */
+ omap_mux_init_signal("fref_clk2_out", OMAP_PIN_OUTPUT);
+
+ /* Init FREF_CLK3_OUT */
+ omap_mux_init_signal("fref_clk3_out", OMAP_PIN_OUTPUT);
+
+ if (gpio_request(OMAP4430SDP_GPIO_CAM_PDN_B, "CAM_PDN_B"))
+ printk(KERN_WARNING "Cannot request GPIO %d\n",
+ OMAP4430SDP_GPIO_CAM_PDN_B);
+ else
+ gpio_direction_output(OMAP4430SDP_GPIO_CAM_PDN_B, 0);
+
+ if (gpio_request(OMAP4430SDP_GPIO_CAM_PDN_C, "CAM_PDN_C"))
+ printk(KERN_WARNING "Cannot request GPIO %d\n",
+ OMAP4430SDP_GPIO_CAM_PDN_C);
+ else
+ gpio_direction_output(OMAP4430SDP_GPIO_CAM_PDN_C, 0);
+
+ if (omap4_init_camera(&sdp4430_iss_platform_data, &omap4iss_data)) {
+ gpio_free(OMAP4430SDP_GPIO_CAM_PDN_B);
+ gpio_free(OMAP4430SDP_GPIO_CAM_PDN_C);
+ regulator_put(sdp4430_cam2pwr_reg);
+ clk_put(sdp4430_cam1_aux_clk);
+ clk_put(sdp4430_cam2_aux_clk);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+late_initcall(sdp4430_camera_init);
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 130ab00..c8f8229 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -458,6 +458,10 @@ static struct regulator_consumer_supply sdp4430_vaux_supply[] = {
REGULATOR_SUPPLY("vmmc", "omap_hsmmc.1"),
};
+static struct regulator_consumer_supply sdp4430_vaux3_supply[] = {
+ REGULATOR_SUPPLY("cam2pwr", NULL),
+};
+
static struct regulator_consumer_supply omap4_sdp4430_vmmc5_supply = {
.supply = "vmmc",
.dev_name = "omap_hsmmc.4",
@@ -548,6 +552,21 @@ static struct regulator_init_data sdp4430_vaux1 = {
.consumer_supplies = sdp4430_vaux_supply,
};
+static struct regulator_init_data sdp4430_vaux3 = {
+ .constraints = {
+ .min_uV = 1000000,
+ .max_uV = 3000000,
+ .apply_uV = true,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL
+ | REGULATOR_MODE_STANDBY,
+ .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
+ | REGULATOR_CHANGE_MODE
+ | REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(sdp4430_vaux3_supply),
+ .consumer_supplies = sdp4430_vaux3_supply,
+};
+
static struct regulator_init_data sdp4430_vusim = {
.constraints = {
.min_uV = 1200000,
@@ -589,6 +608,7 @@ static struct twl4030_platform_data sdp4430_twldata = {
/* Regulators */
.vusim = &sdp4430_vusim,
.vaux1 = &sdp4430_vaux1,
+ .vaux3 = &sdp4430_vaux3,
};
static struct i2c_board_info __initdata sdp4430_i2c_3_boardinfo[] = {
--
1.7.5.4
--
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