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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
- *
- * Adapted from the atomisp-ov5693 driver, with contributions from:
- *
- * Daniel Scally
- * Jean-Michel Hautbois
- * Fabian Wuthrich
- * Tsuchiya Yuto
- * Jordan Hand
- * Jake Day
- */
- #include <asm/unaligned.h>
- #include <linux/acpi.h>
- #include <linux/clk.h>
- #include <linux/delay.h>
- #include <linux/device.h>
- #include <linux/i2c.h>
- #include <linux/module.h>
- #include <linux/pm_runtime.h>
- #include <linux/regulator/consumer.h>
- #include <linux/slab.h>
- #include <linux/types.h>
- #include <media/v4l2-ctrls.h>
- #include <media/v4l2-device.h>
- #include <media/v4l2-fwnode.h>
- #define OV5693_REG_8BIT(n) ((1 << 16) | (n))
- #define OV5693_REG_16BIT(n) ((2 << 16) | (n))
- #define OV5693_REG_24BIT(n) ((3 << 16) | (n))
- #define OV5693_REG_SIZE_SHIFT 16
- #define OV5693_REG_ADDR_MASK 0xffff
- /* System Control */
- #define OV5693_SW_RESET_REG OV5693_REG_8BIT(0x0103)
- #define OV5693_SW_STREAM_REG OV5693_REG_8BIT(0x0100)
- #define OV5693_START_STREAMING 0x01
- #define OV5693_STOP_STREAMING 0x00
- #define OV5693_SW_RESET 0x01
- #define OV5693_REG_CHIP_ID OV5693_REG_16BIT(0x300a)
- /* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
- #define OV5693_CHIP_ID 0x5690
- /* Exposure */
- #define OV5693_EXPOSURE_CTRL_REG OV5693_REG_24BIT(0x3500)
- #define OV5693_EXPOSURE_CTRL_MASK GENMASK(19, 4)
- #define OV5693_INTEGRATION_TIME_MARGIN 8
- #define OV5693_EXPOSURE_MIN 1
- #define OV5693_EXPOSURE_STEP 1
- /* Analogue Gain */
- #define OV5693_GAIN_CTRL_REG OV5693_REG_16BIT(0x350a)
- #define OV5693_GAIN_CTRL_MASK GENMASK(10, 4)
- #define OV5693_GAIN_MIN 1
- #define OV5693_GAIN_MAX 127
- #define OV5693_GAIN_DEF 8
- #define OV5693_GAIN_STEP 1
- /* Digital Gain */
- #define OV5693_MWB_RED_GAIN_REG OV5693_REG_16BIT(0x3400)
- #define OV5693_MWB_GREEN_GAIN_REG OV5693_REG_16BIT(0x3402)
- #define OV5693_MWB_BLUE_GAIN_REG OV5693_REG_16BIT(0x3404)
- #define OV5693_MWB_GAIN_MASK GENMASK(11, 0)
- #define OV5693_MWB_GAIN_MAX 0x0fff
- #define OV5693_DIGITAL_GAIN_MIN 1
- #define OV5693_DIGITAL_GAIN_MAX 4095
- #define OV5693_DIGITAL_GAIN_DEF 1024
- #define OV5693_DIGITAL_GAIN_STEP 1
- /* Timing and Format */
- #define OV5693_CROP_START_X_REG OV5693_REG_16BIT(0x3800)
- #define OV5693_CROP_START_Y_REG OV5693_REG_16BIT(0x3802)
- #define OV5693_CROP_END_X_REG OV5693_REG_16BIT(0x3804)
- #define OV5693_CROP_END_Y_REG OV5693_REG_16BIT(0x3806)
- #define OV5693_OUTPUT_SIZE_X_REG OV5693_REG_16BIT(0x3808)
- #define OV5693_OUTPUT_SIZE_Y_REG OV5693_REG_16BIT(0x380a)
- #define OV5693_TIMING_HTS_REG OV5693_REG_16BIT(0x380c)
- #define OV5693_FIXED_PPL 2688U
- #define OV5693_TIMING_VTS_REG OV5693_REG_16BIT(0x380e)
- #define OV5693_TIMING_MAX_VTS 0xffff
- #define OV5693_TIMING_MIN_VTS 0x04
- #define OV5693_OFFSET_START_X_REG OV5693_REG_16BIT(0x3810)
- #define OV5693_OFFSET_START_Y_REG OV5693_REG_16BIT(0x3812)
- #define OV5693_SUB_INC_X_REG OV5693_REG_8BIT(0x3814)
- #define OV5693_SUB_INC_Y_REG OV5693_REG_8BIT(0x3815)
- #define OV5693_FORMAT1_REG OV5693_REG_8BIT(0x3820)
- #define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(6)
- #define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
- #define OV5693_FORMAT1_VBIN_EN BIT(0)
- #define OV5693_FORMAT2_REG OV5693_REG_8BIT(0x3821)
- #define OV5693_FORMAT2_HDR_EN BIT(7)
- #define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
- #define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
- #define OV5693_FORMAT2_HBIN_EN BIT(0)
- #define OV5693_ISP_CTRL2_REG OV5693_REG_8BIT(0x5002)
- #define OV5693_ISP_SCALE_ENABLE BIT(7)
- /* Pixel Array */
- #define OV5693_NATIVE_WIDTH 2624
- #define OV5693_NATIVE_HEIGHT 1956
- #define OV5693_NATIVE_START_LEFT 0
- #define OV5693_NATIVE_START_TOP 0
- #define OV5693_ACTIVE_WIDTH 2592
- #define OV5693_ACTIVE_HEIGHT 1944
- #define OV5693_ACTIVE_START_LEFT 16
- #define OV5693_ACTIVE_START_TOP 6
- #define OV5693_MIN_CROP_WIDTH 2
- #define OV5693_MIN_CROP_HEIGHT 2
- /* Test Pattern */
- #define OV5693_TEST_PATTERN_REG OV5693_REG_8BIT(0x5e00)
- #define OV5693_TEST_PATTERN_ENABLE BIT(7)
- #define OV5693_TEST_PATTERN_ROLLING BIT(6)
- #define OV5693_TEST_PATTERN_RANDOM 0x01
- #define OV5693_TEST_PATTERN_BARS 0x00
- /* System Frequencies */
- #define OV5693_XVCLK_FREQ 19200000
- #define OV5693_LINK_FREQ_419_2MHZ 419200000
- #define OV5693_PIXEL_RATE 167680000
- #define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
- static const char * const ov5693_supply_names[] = {
- "avdd", /* Analog power */
- "dovdd", /* Digital I/O power */
- "dvdd", /* Digital circuit power */
- };
- #define OV5693_NUM_SUPPLIES ARRAY_SIZE(ov5693_supply_names)
- struct ov5693_reg {
- u32 reg;
- u8 val;
- };
- struct ov5693_reg_list {
- u32 num_regs;
- const struct ov5693_reg *regs;
- };
- struct ov5693_device {
- struct i2c_client *client;
- struct device *dev;
- /* Protect against concurrent changes to controls */
- struct mutex lock;
- struct gpio_desc *reset;
- struct gpio_desc *powerdown;
- struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
- struct clk *xvclk;
- struct ov5693_mode {
- struct v4l2_rect crop;
- struct v4l2_mbus_framefmt format;
- bool binning_x;
- bool binning_y;
- unsigned int inc_x_odd;
- unsigned int inc_y_odd;
- unsigned int vts;
- } mode;
- bool streaming;
- struct v4l2_subdev sd;
- struct media_pad pad;
- struct ov5693_v4l2_ctrls {
- struct v4l2_ctrl_handler handler;
- struct v4l2_ctrl *link_freq;
- struct v4l2_ctrl *pixel_rate;
- struct v4l2_ctrl *exposure;
- struct v4l2_ctrl *analogue_gain;
- struct v4l2_ctrl *digital_gain;
- struct v4l2_ctrl *hflip;
- struct v4l2_ctrl *vflip;
- struct v4l2_ctrl *hblank;
- struct v4l2_ctrl *vblank;
- struct v4l2_ctrl *test_pattern;
- } ctrls;
- };
- static const struct ov5693_reg ov5693_global_regs[] = {
- {OV5693_REG_8BIT(0x3016), 0xf0},
- {OV5693_REG_8BIT(0x3017), 0xf0},
- {OV5693_REG_8BIT(0x3018), 0xf0},
- {OV5693_REG_8BIT(0x3022), 0x01},
- {OV5693_REG_8BIT(0x3028), 0x44},
- {OV5693_REG_8BIT(0x3098), 0x02},
- {OV5693_REG_8BIT(0x3099), 0x19},
- {OV5693_REG_8BIT(0x309a), 0x02},
- {OV5693_REG_8BIT(0x309b), 0x01},
- {OV5693_REG_8BIT(0x309c), 0x00},
- {OV5693_REG_8BIT(0x30a0), 0xd2},
- {OV5693_REG_8BIT(0x30a2), 0x01},
- {OV5693_REG_8BIT(0x30b2), 0x00},
- {OV5693_REG_8BIT(0x30b3), 0x83},
- {OV5693_REG_8BIT(0x30b4), 0x03},
- {OV5693_REG_8BIT(0x30b5), 0x04},
- {OV5693_REG_8BIT(0x30b6), 0x01},
- {OV5693_REG_8BIT(0x3080), 0x01},
- {OV5693_REG_8BIT(0x3104), 0x21},
- {OV5693_REG_8BIT(0x3106), 0x00},
- {OV5693_REG_8BIT(0x3406), 0x01},
- {OV5693_REG_8BIT(0x3503), 0x07},
- {OV5693_REG_8BIT(0x350b), 0x40},
- {OV5693_REG_8BIT(0x3601), 0x0a},
- {OV5693_REG_8BIT(0x3602), 0x38},
- {OV5693_REG_8BIT(0x3612), 0x80},
- {OV5693_REG_8BIT(0x3620), 0x54},
- {OV5693_REG_8BIT(0x3621), 0xc7},
- {OV5693_REG_8BIT(0x3622), 0x0f},
- {OV5693_REG_8BIT(0x3625), 0x10},
- {OV5693_REG_8BIT(0x3630), 0x55},
- {OV5693_REG_8BIT(0x3631), 0xf4},
- {OV5693_REG_8BIT(0x3632), 0x00},
- {OV5693_REG_8BIT(0x3633), 0x34},
- {OV5693_REG_8BIT(0x3634), 0x02},
- {OV5693_REG_8BIT(0x364d), 0x0d},
- {OV5693_REG_8BIT(0x364f), 0xdd},
- {OV5693_REG_8BIT(0x3660), 0x04},
- {OV5693_REG_8BIT(0x3662), 0x10},
- {OV5693_REG_8BIT(0x3663), 0xf1},
- {OV5693_REG_8BIT(0x3665), 0x00},
- {OV5693_REG_8BIT(0x3666), 0x20},
- {OV5693_REG_8BIT(0x3667), 0x00},
- {OV5693_REG_8BIT(0x366a), 0x80},
- {OV5693_REG_8BIT(0x3680), 0xe0},
- {OV5693_REG_8BIT(0x3681), 0x00},
- {OV5693_REG_8BIT(0x3700), 0x42},
- {OV5693_REG_8BIT(0x3701), 0x14},
- {OV5693_REG_8BIT(0x3702), 0xa0},
- {OV5693_REG_8BIT(0x3703), 0xd8},
- {OV5693_REG_8BIT(0x3704), 0x78},
- {OV5693_REG_8BIT(0x3705), 0x02},
- {OV5693_REG_8BIT(0x370a), 0x00},
- {OV5693_REG_8BIT(0x370b), 0x20},
- {OV5693_REG_8BIT(0x370c), 0x0c},
- {OV5693_REG_8BIT(0x370d), 0x11},
- {OV5693_REG_8BIT(0x370e), 0x00},
- {OV5693_REG_8BIT(0x370f), 0x40},
- {OV5693_REG_8BIT(0x3710), 0x00},
- {OV5693_REG_8BIT(0x371a), 0x1c},
- {OV5693_REG_8BIT(0x371b), 0x05},
- {OV5693_REG_8BIT(0x371c), 0x01},
- {OV5693_REG_8BIT(0x371e), 0xa1},
- {OV5693_REG_8BIT(0x371f), 0x0c},
- {OV5693_REG_8BIT(0x3721), 0x00},
- {OV5693_REG_8BIT(0x3724), 0x10},
- {OV5693_REG_8BIT(0x3726), 0x00},
- {OV5693_REG_8BIT(0x372a), 0x01},
- {OV5693_REG_8BIT(0x3730), 0x10},
- {OV5693_REG_8BIT(0x3738), 0x22},
- {OV5693_REG_8BIT(0x3739), 0xe5},
- {OV5693_REG_8BIT(0x373a), 0x50},
- {OV5693_REG_8BIT(0x373b), 0x02},
- {OV5693_REG_8BIT(0x373c), 0x41},
- {OV5693_REG_8BIT(0x373f), 0x02},
- {OV5693_REG_8BIT(0x3740), 0x42},
- {OV5693_REG_8BIT(0x3741), 0x02},
- {OV5693_REG_8BIT(0x3742), 0x18},
- {OV5693_REG_8BIT(0x3743), 0x01},
- {OV5693_REG_8BIT(0x3744), 0x02},
- {OV5693_REG_8BIT(0x3747), 0x10},
- {OV5693_REG_8BIT(0x374c), 0x04},
- {OV5693_REG_8BIT(0x3751), 0xf0},
- {OV5693_REG_8BIT(0x3752), 0x00},
- {OV5693_REG_8BIT(0x3753), 0x00},
- {OV5693_REG_8BIT(0x3754), 0xc0},
- {OV5693_REG_8BIT(0x3755), 0x00},
- {OV5693_REG_8BIT(0x3756), 0x1a},
- {OV5693_REG_8BIT(0x3758), 0x00},
- {OV5693_REG_8BIT(0x3759), 0x0f},
- {OV5693_REG_8BIT(0x376b), 0x44},
- {OV5693_REG_8BIT(0x375c), 0x04},
- {OV5693_REG_8BIT(0x3774), 0x10},
- {OV5693_REG_8BIT(0x3776), 0x00},
- {OV5693_REG_8BIT(0x377f), 0x08},
- {OV5693_REG_8BIT(0x3780), 0x22},
- {OV5693_REG_8BIT(0x3781), 0x0c},
- {OV5693_REG_8BIT(0x3784), 0x2c},
- {OV5693_REG_8BIT(0x3785), 0x1e},
- {OV5693_REG_8BIT(0x378f), 0xf5},
- {OV5693_REG_8BIT(0x3791), 0xb0},
- {OV5693_REG_8BIT(0x3795), 0x00},
- {OV5693_REG_8BIT(0x3796), 0x64},
- {OV5693_REG_8BIT(0x3797), 0x11},
- {OV5693_REG_8BIT(0x3798), 0x30},
- {OV5693_REG_8BIT(0x3799), 0x41},
- {OV5693_REG_8BIT(0x379a), 0x07},
- {OV5693_REG_8BIT(0x379b), 0xb0},
- {OV5693_REG_8BIT(0x379c), 0x0c},
- {OV5693_REG_8BIT(0x3a04), 0x06},
- {OV5693_REG_8BIT(0x3a05), 0x14},
- {OV5693_REG_8BIT(0x3e07), 0x20},
- {OV5693_REG_8BIT(0x4000), 0x08},
- {OV5693_REG_8BIT(0x4001), 0x04},
- {OV5693_REG_8BIT(0x4004), 0x08},
- {OV5693_REG_8BIT(0x4006), 0x20},
- {OV5693_REG_8BIT(0x4008), 0x24},
- {OV5693_REG_8BIT(0x4009), 0x10},
- {OV5693_REG_8BIT(0x4058), 0x00},
- {OV5693_REG_8BIT(0x4101), 0xb2},
- {OV5693_REG_8BIT(0x4307), 0x31},
- {OV5693_REG_8BIT(0x4511), 0x05},
- {OV5693_REG_8BIT(0x4512), 0x01},
- {OV5693_REG_8BIT(0x481f), 0x30},
- {OV5693_REG_8BIT(0x4826), 0x2c},
- {OV5693_REG_8BIT(0x4d02), 0xfd},
- {OV5693_REG_8BIT(0x4d03), 0xf5},
- {OV5693_REG_8BIT(0x4d04), 0x0c},
- {OV5693_REG_8BIT(0x4d05), 0xcc},
- {OV5693_REG_8BIT(0x4837), 0x0a},
- {OV5693_REG_8BIT(0x5003), 0x20},
- {OV5693_REG_8BIT(0x5013), 0x00},
- {OV5693_REG_8BIT(0x5842), 0x01},
- {OV5693_REG_8BIT(0x5843), 0x2b},
- {OV5693_REG_8BIT(0x5844), 0x01},
- {OV5693_REG_8BIT(0x5845), 0x92},
- {OV5693_REG_8BIT(0x5846), 0x01},
- {OV5693_REG_8BIT(0x5847), 0x8f},
- {OV5693_REG_8BIT(0x5848), 0x01},
- {OV5693_REG_8BIT(0x5849), 0x0c},
- {OV5693_REG_8BIT(0x5e10), 0x0c},
- {OV5693_REG_8BIT(0x3820), 0x00},
- {OV5693_REG_8BIT(0x3821), 0x1e},
- {OV5693_REG_8BIT(0x5041), 0x14}
- };
- static const struct ov5693_reg_list ov5693_global_setting = {
- .num_regs = ARRAY_SIZE(ov5693_global_regs),
- .regs = ov5693_global_regs,
- };
- static const struct v4l2_rect ov5693_default_crop = {
- .left = OV5693_ACTIVE_START_LEFT,
- .top = OV5693_ACTIVE_START_TOP,
- .width = OV5693_ACTIVE_WIDTH,
- .height = OV5693_ACTIVE_HEIGHT,
- };
- static const struct v4l2_mbus_framefmt ov5693_default_fmt = {
- .width = OV5693_ACTIVE_WIDTH,
- .height = OV5693_ACTIVE_HEIGHT,
- .code = MEDIA_BUS_FMT_SBGGR10_1X10,
- };
- static const s64 link_freq_menu_items[] = {
- OV5693_LINK_FREQ_419_2MHZ
- };
- static const char * const ov5693_test_pattern_menu[] = {
- "Disabled",
- "Random Data",
- "Colour Bars",
- "Colour Bars with Rolling Bar"
- };
- static const u8 ov5693_test_pattern_bits[] = {
- 0,
- OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
- OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
- OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
- OV5693_TEST_PATTERN_ROLLING,
- };
- /* I2C I/O Operations */
- static int ov5693_read_reg(struct ov5693_device *ov5693, u32 addr, u32 *value)
- {
- struct i2c_client *client = ov5693->client;
- __be16 reg;
- u8 val[4];
- struct i2c_msg msg[] = {
- {
- .addr = client->addr,
- .flags = 0,
- .len = 2,
- .buf = (u8 *)®,
- },
- {
- .addr = client->addr,
- .flags = I2C_M_RD,
- .buf = (u8 *)&val,
- },
- };
- unsigned int len = ((addr >> OV5693_REG_SIZE_SHIFT) & 3);
- unsigned int i;
- int ret;
- reg = cpu_to_be16(addr & OV5693_REG_ADDR_MASK);
- msg[1].len = len;
- ret = i2c_transfer(client->adapter, msg, 2);
- if (ret < 0)
- return dev_err_probe(&client->dev, ret,
- "Failed to read register 0x%04x: %d\n",
- addr & OV5693_REG_ADDR_MASK, ret);
- *value = 0;
- for (i = 0; i < len; ++i) {
- *value <<= 8;
- *value |= val[i];
- }
- return 0;
- }
- static void ov5693_write_reg(struct ov5693_device *ov5693, u32 addr, u32 value,
- int *error)
- {
- struct i2c_client *client = ov5693->client;
- struct {
- __be16 reg;
- u8 val[4];
- } __packed buf;
- struct i2c_msg msg = {
- .addr = client->addr,
- .buf = (u8 *)&buf,
- };
- unsigned int len = ((addr >> OV5693_REG_SIZE_SHIFT) & 3);
- unsigned int i;
- int ret;
- if (*error < 0)
- return;
- buf.reg = cpu_to_be16(addr & OV5693_REG_ADDR_MASK);
- for (i = 0; i < len; ++i) {
- buf.val[len - i - 1] = value & 0xff;
- value >>= 8;
- }
- msg.len = len + 2;
- ret = i2c_transfer(client->adapter, &msg, 1);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to write register 0x%04x: %d\n",
- addr & OV5693_REG_ADDR_MASK, ret);
- *error = ret;
- }
- }
- static int ov5693_write_reg_array(struct ov5693_device *ov5693,
- const struct ov5693_reg_list *reglist)
- {
- unsigned int i;
- int ret = 0;
- for (i = 0; i < reglist->num_regs; i++)
- ov5693_write_reg(ov5693, reglist->regs[i].reg,
- reglist->regs[i].val, &ret);
- return ret;
- }
- static int ov5693_update_bits(struct ov5693_device *ov5693, u32 address,
- u32 mask, u32 bits)
- {
- u32 value = 0;
- int ret;
- ret = ov5693_read_reg(ov5693, address, &value);
- if (ret)
- return ret;
- value &= ~mask;
- value |= bits;
- ov5693_write_reg(ov5693, address, value, &ret);
- return ret;
- }
- /* V4L2 Controls Functions */
- static int ov5693_flip_vert_configure(struct ov5693_device *ov5693,
- bool enable)
- {
- u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
- OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
- int ret;
- ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
- enable ? bits : 0);
- if (ret)
- return ret;
- return 0;
- }
- static int ov5693_flip_horz_configure(struct ov5693_device *ov5693,
- bool enable)
- {
- u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
- OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
- int ret;
- ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
- enable ? bits : 0);
- if (ret)
- return ret;
- return 0;
- }
- static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
- {
- u32 exposure;
- int ret;
- ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_CTRL_REG, &exposure);
- if (ret)
- return ret;
- /* The lowest 4 bits are unsupported fractional bits */
- *value = exposure >> 4;
- return 0;
- }
- static int ov5693_exposure_configure(struct ov5693_device *ov5693,
- u32 exposure)
- {
- int ret = 0;
- exposure = (exposure << 4) & OV5693_EXPOSURE_CTRL_MASK;
- ov5693_write_reg(ov5693, OV5693_EXPOSURE_CTRL_REG, exposure, &ret);
- return ret;
- }
- static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
- {
- u32 value;
- int ret;
- ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_REG, &value);
- if (ret)
- return ret;
- /* As with exposure, the lowest 4 bits are fractional bits. */
- *gain = value >> 4;
- return ret;
- }
- static int ov5693_digital_gain_configure(struct ov5693_device *ov5693,
- u32 gain)
- {
- int ret = 0;
- gain &= OV5693_MWB_GAIN_MASK;
- ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_REG, gain, &ret);
- ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_REG, gain, &ret);
- ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_REG, gain, &ret);
- return ret;
- }
- static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
- {
- int ret = 0;
- gain = (gain << 4) & OV5693_GAIN_CTRL_MASK;
- ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_REG, gain, &ret);
- return ret;
- }
- static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
- {
- u16 vts = ov5693->mode.format.height + vblank;
- int ret = 0;
- ov5693_write_reg(ov5693, OV5693_TIMING_VTS_REG, vts, &ret);
- return ret;
- }
- static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
- {
- int ret = 0;
- ov5693_write_reg(ov5693, OV5693_TEST_PATTERN_REG,
- ov5693_test_pattern_bits[idx], &ret);
- return ret;
- }
- static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
- {
- struct ov5693_device *ov5693 =
- container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
- int ret = 0;
- /* If VBLANK is altered we need to update exposure to compensate */
- if (ctrl->id == V4L2_CID_VBLANK) {
- int exposure_max;
- exposure_max = ov5693->mode.format.height + ctrl->val -
- OV5693_INTEGRATION_TIME_MARGIN;
- __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
- ov5693->ctrls.exposure->minimum,
- exposure_max,
- ov5693->ctrls.exposure->step,
- min(ov5693->ctrls.exposure->val,
- exposure_max));
- }
- /* Only apply changes to the controls if the device is powered up */
- if (!pm_runtime_get_if_in_use(ov5693->dev))
- return 0;
- switch (ctrl->id) {
- case V4L2_CID_EXPOSURE:
- ret = ov5693_exposure_configure(ov5693, ctrl->val);
- break;
- case V4L2_CID_ANALOGUE_GAIN:
- ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
- break;
- case V4L2_CID_DIGITAL_GAIN:
- ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
- break;
- case V4L2_CID_HFLIP:
- ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
- break;
- case V4L2_CID_VFLIP:
- ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
- break;
- case V4L2_CID_VBLANK:
- ret = ov5693_vts_configure(ov5693, ctrl->val);
- break;
- case V4L2_CID_TEST_PATTERN:
- ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
- break;
- default:
- ret = -EINVAL;
- }
- pm_runtime_put(ov5693->dev);
- return ret;
- }
- static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
- {
- struct ov5693_device *ov5693 = container_of(ctrl->handler,
- struct ov5693_device,
- ctrls.handler);
- switch (ctrl->id) {
- case V4L2_CID_EXPOSURE_ABSOLUTE:
- return ov5693_get_exposure(ov5693, &ctrl->val);
- case V4L2_CID_AUTOGAIN:
- return ov5693_get_gain(ov5693, &ctrl->val);
- default:
- return -EINVAL;
- }
- }
- static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
- .s_ctrl = ov5693_s_ctrl,
- .g_volatile_ctrl = ov5693_g_volatile_ctrl
- };
- /* System Control Functions */
- static int ov5693_mode_configure(struct ov5693_device *ov5693)
- {
- const struct ov5693_mode *mode = &ov5693->mode;
- int ret = 0;
- /* Crop Start X */
- ov5693_write_reg(ov5693, OV5693_CROP_START_X_REG, mode->crop.left,
- &ret);
- /* Offset X */
- ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_REG, 0, &ret);
- /* Output Size X */
- ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_REG, mode->format.width,
- &ret);
- /* Crop End X */
- ov5693_write_reg(ov5693, OV5693_CROP_END_X_REG,
- mode->crop.left + mode->crop.width, &ret);
- /* Horizontal Total Size */
- ov5693_write_reg(ov5693, OV5693_TIMING_HTS_REG, OV5693_FIXED_PPL,
- &ret);
- /* Crop Start Y */
- ov5693_write_reg(ov5693, OV5693_CROP_START_Y_REG, mode->crop.top,
- &ret);
- /* Offset Y */
- ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_REG, 0, &ret);
- /* Output Size Y */
- ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_REG, mode->format.height,
- &ret);
- /* Crop End Y */
- ov5693_write_reg(ov5693, OV5693_CROP_END_Y_REG,
- mode->crop.top + mode->crop.height, &ret);
- /* Subsample X increase */
- ov5693_write_reg(ov5693, OV5693_SUB_INC_X_REG,
- ((mode->inc_x_odd << 4) & 0xf0) | 0x01, &ret);
- /* Subsample Y increase */
- ov5693_write_reg(ov5693, OV5693_SUB_INC_Y_REG,
- ((mode->inc_y_odd << 4) & 0xf0) | 0x01, &ret);
- if (ret)
- return ret;
- /* Binning */
- ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG,
- OV5693_FORMAT1_VBIN_EN,
- mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0);
- if (ret)
- return ret;
- ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
- OV5693_FORMAT2_HBIN_EN,
- mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0);
- return ret;
- }
- static int ov5693_enable_streaming(struct ov5693_device *ov5693, bool enable)
- {
- int ret = 0;
- ov5693_write_reg(ov5693, OV5693_SW_STREAM_REG,
- enable ? OV5693_START_STREAMING :
- OV5693_STOP_STREAMING, &ret);
- return ret;
- }
- static int ov5693_sw_reset(struct ov5693_device *ov5693)
- {
- int ret = 0;
- ov5693_write_reg(ov5693, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
- return ret;
- }
- static int ov5693_sensor_init(struct ov5693_device *ov5693)
- {
- int ret;
- ret = ov5693_sw_reset(ov5693);
- if (ret)
- return dev_err_probe(ov5693->dev, ret,
- "software reset error\n");
- ret = ov5693_write_reg_array(ov5693, &ov5693_global_setting);
- if (ret)
- return dev_err_probe(ov5693->dev, ret,
- "global settings error\n");
- ret = ov5693_mode_configure(ov5693);
- if (ret)
- return dev_err_probe(ov5693->dev, ret,
- "mode configure error\n");
- ret = ov5693_enable_streaming(ov5693, false);
- if (ret)
- dev_err(ov5693->dev, "stop streaming error\n");
- return ret;
- }
- static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
- {
- gpiod_set_value_cansleep(ov5693->reset, 1);
- gpiod_set_value_cansleep(ov5693->powerdown, 1);
- regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
- clk_disable_unprepare(ov5693->xvclk);
- }
- static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
- {
- int ret;
- gpiod_set_value_cansleep(ov5693->reset, 1);
- gpiod_set_value_cansleep(ov5693->powerdown, 1);
- ret = clk_prepare_enable(ov5693->xvclk);
- if (ret) {
- dev_err(ov5693->dev, "Failed to enable clk\n");
- goto fail_power;
- }
- ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
- if (ret) {
- dev_err(ov5693->dev, "Failed to enable regulators\n");
- goto fail_power;
- }
- gpiod_set_value_cansleep(ov5693->powerdown, 0);
- gpiod_set_value_cansleep(ov5693->reset, 0);
- usleep_range(5000, 7500);
- return 0;
- fail_power:
- ov5693_sensor_powerdown(ov5693);
- return ret;
- }
- static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
- {
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- ov5693_sensor_powerdown(ov5693);
- return 0;
- }
- static int __maybe_unused ov5693_sensor_resume(struct device *dev)
- {
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- int ret;
- mutex_lock(&ov5693->lock);
- ret = ov5693_sensor_powerup(ov5693);
- if (ret)
- goto out_unlock;
- ret = ov5693_sensor_init(ov5693);
- if (ret) {
- dev_err(dev, "ov5693 sensor init failure\n");
- goto err_power;
- }
- goto out_unlock;
- err_power:
- ov5693_sensor_powerdown(ov5693);
- out_unlock:
- mutex_unlock(&ov5693->lock);
- return ret;
- }
- static int ov5693_detect(struct ov5693_device *ov5693)
- {
- int ret;
- u32 id;
- ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID, &id);
- if (ret)
- return ret;
- if (id != OV5693_CHIP_ID)
- return dev_err_probe(ov5693->dev, -ENODEV,
- "sensor ID mismatch. Found 0x%04x\n", id);
- return 0;
- }
- /* V4L2 Framework callbacks */
- static unsigned int __ov5693_calc_vts(u32 height)
- {
- /*
- * We need to set a sensible default VTS for whatever format height we
- * happen to be given from set_fmt(). This function just targets
- * an even multiple of 30fps.
- */
- unsigned int tgt_fps;
- tgt_fps = rounddown(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / height, 30);
- return ALIGN_DOWN(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / tgt_fps, 2);
- }
- static struct v4l2_mbus_framefmt *
- __ov5693_get_pad_format(struct ov5693_device *ov5693,
- struct v4l2_subdev_state *state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
- {
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_get_try_format(&ov5693->sd, state, pad);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &ov5693->mode.format;
- default:
- return NULL;
- }
- }
- static struct v4l2_rect *
- __ov5693_get_pad_crop(struct ov5693_device *ov5693,
- struct v4l2_subdev_state *state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
- {
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_get_try_crop(&ov5693->sd, state, pad);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &ov5693->mode.crop;
- }
- return NULL;
- }
- static int ov5693_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_format *format)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- format->format = ov5693->mode.format;
- return 0;
- }
- static int ov5693_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_format *format)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- const struct v4l2_rect *crop;
- struct v4l2_mbus_framefmt *fmt;
- unsigned int hratio, vratio;
- unsigned int width, height;
- unsigned int hblank;
- int exposure_max;
- crop = __ov5693_get_pad_crop(ov5693, state, format->pad, format->which);
- /*
- * Align to two to simplify the binning calculations below, and clamp
- * the requested format at the crop rectangle
- */
- width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
- OV5693_MIN_CROP_WIDTH, crop->width);
- height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
- OV5693_MIN_CROP_HEIGHT, crop->height);
- /*
- * We can only support setting either the dimensions of the crop rect
- * or those dimensions binned (separately) by a factor of two.
- */
- hratio = clamp_t(unsigned int,
- DIV_ROUND_CLOSEST(crop->width, width), 1, 2);
- vratio = clamp_t(unsigned int,
- DIV_ROUND_CLOSEST(crop->height, height), 1, 2);
- fmt = __ov5693_get_pad_format(ov5693, state, format->pad,
- format->which);
- fmt->width = crop->width / hratio;
- fmt->height = crop->height / vratio;
- fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- format->format = *fmt;
- if (format->which == V4L2_SUBDEV_FORMAT_TRY)
- return 0;
- mutex_lock(&ov5693->lock);
- ov5693->mode.binning_x = hratio > 1;
- ov5693->mode.inc_x_odd = hratio > 1 ? 3 : 1;
- ov5693->mode.binning_y = vratio > 1;
- ov5693->mode.inc_y_odd = vratio > 1 ? 3 : 1;
- ov5693->mode.vts = __ov5693_calc_vts(fmt->height);
- __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
- OV5693_TIMING_MIN_VTS,
- OV5693_TIMING_MAX_VTS - fmt->height,
- 1, ov5693->mode.vts - fmt->height);
- __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
- ov5693->mode.vts - fmt->height);
- hblank = OV5693_FIXED_PPL - fmt->width;
- __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
- hblank);
- exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN;
- __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
- ov5693->ctrls.exposure->minimum, exposure_max,
- ov5693->ctrls.exposure->step,
- min(ov5693->ctrls.exposure->val,
- exposure_max));
- mutex_unlock(&ov5693->lock);
- return 0;
- }
- static int ov5693_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_selection *sel)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP:
- mutex_lock(&ov5693->lock);
- sel->r = *__ov5693_get_pad_crop(ov5693, state, sel->pad,
- sel->which);
- mutex_unlock(&ov5693->lock);
- break;
- case V4L2_SEL_TGT_NATIVE_SIZE:
- sel->r.top = 0;
- sel->r.left = 0;
- sel->r.width = OV5693_NATIVE_WIDTH;
- sel->r.height = OV5693_NATIVE_HEIGHT;
- break;
- case V4L2_SEL_TGT_CROP_BOUNDS:
- case V4L2_SEL_TGT_CROP_DEFAULT:
- sel->r.top = OV5693_ACTIVE_START_TOP;
- sel->r.left = OV5693_ACTIVE_START_LEFT;
- sel->r.width = OV5693_ACTIVE_WIDTH;
- sel->r.height = OV5693_ACTIVE_HEIGHT;
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- static int ov5693_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_selection *sel)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- struct v4l2_mbus_framefmt *format;
- struct v4l2_rect *__crop;
- struct v4l2_rect rect;
- if (sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
- /*
- * Clamp the boundaries of the crop rectangle to the size of the sensor
- * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't
- * disrupted.
- */
- rect.left = clamp(ALIGN(sel->r.left, 2), OV5693_NATIVE_START_LEFT,
- OV5693_NATIVE_WIDTH);
- rect.top = clamp(ALIGN(sel->r.top, 2), OV5693_NATIVE_START_TOP,
- OV5693_NATIVE_HEIGHT);
- rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
- OV5693_MIN_CROP_WIDTH, OV5693_NATIVE_WIDTH);
- rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
- OV5693_MIN_CROP_HEIGHT, OV5693_NATIVE_HEIGHT);
- /* Make sure the crop rectangle isn't outside the bounds of the array */
- rect.width = min_t(unsigned int, rect.width,
- OV5693_NATIVE_WIDTH - rect.left);
- rect.height = min_t(unsigned int, rect.height,
- OV5693_NATIVE_HEIGHT - rect.top);
- __crop = __ov5693_get_pad_crop(ov5693, state, sel->pad, sel->which);
- if (rect.width != __crop->width || rect.height != __crop->height) {
- /*
- * Reset the output image size if the crop rectangle size has
- * been modified.
- */
- format = __ov5693_get_pad_format(ov5693, state, sel->pad,
- sel->which);
- format->width = rect.width;
- format->height = rect.height;
- }
- *__crop = rect;
- sel->r = rect;
- return 0;
- }
- static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- int ret;
- if (enable) {
- ret = pm_runtime_get_sync(ov5693->dev);
- if (ret < 0)
- goto err_power_down;
- mutex_lock(&ov5693->lock);
- ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
- if (ret) {
- mutex_unlock(&ov5693->lock);
- goto err_power_down;
- }
- ret = ov5693_enable_streaming(ov5693, true);
- mutex_unlock(&ov5693->lock);
- } else {
- mutex_lock(&ov5693->lock);
- ret = ov5693_enable_streaming(ov5693, false);
- mutex_unlock(&ov5693->lock);
- }
- if (ret)
- goto err_power_down;
- ov5693->streaming = !!enable;
- if (!enable)
- pm_runtime_put(ov5693->dev);
- return 0;
- err_power_down:
- pm_runtime_put_noidle(ov5693->dev);
- return ret;
- }
- static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_frame_interval *interval)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- unsigned int framesize = OV5693_FIXED_PPL * (ov5693->mode.format.height +
- ov5693->ctrls.vblank->val);
- unsigned int fps = DIV_ROUND_CLOSEST(OV5693_PIXEL_RATE, framesize);
- interval->interval.numerator = 1;
- interval->interval.denominator = fps;
- return 0;
- }
- static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_mbus_code_enum *code)
- {
- /* Only a single mbus format is supported */
- if (code->index > 0)
- return -EINVAL;
- code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- return 0;
- }
- static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_frame_size_enum *fse)
- {
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- struct v4l2_rect *__crop;
- if (fse->index > 1 || fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
- return -EINVAL;
- __crop = __ov5693_get_pad_crop(ov5693, state, fse->pad, fse->which);
- if (!__crop)
- return -EINVAL;
- fse->min_width = __crop->width / (fse->index + 1);
- fse->min_height = __crop->height / (fse->index + 1);
- fse->max_width = fse->min_width;
- fse->max_height = fse->min_height;
- return 0;
- }
- static const struct v4l2_subdev_video_ops ov5693_video_ops = {
- .s_stream = ov5693_s_stream,
- .g_frame_interval = ov5693_g_frame_interval,
- };
- static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
- .enum_mbus_code = ov5693_enum_mbus_code,
- .enum_frame_size = ov5693_enum_frame_size,
- .get_fmt = ov5693_get_fmt,
- .set_fmt = ov5693_set_fmt,
- .get_selection = ov5693_get_selection,
- .set_selection = ov5693_set_selection,
- };
- static const struct v4l2_subdev_ops ov5693_ops = {
- .video = &ov5693_video_ops,
- .pad = &ov5693_pad_ops,
- };
- /* Sensor and Driver Configuration Functions */
- static int ov5693_init_controls(struct ov5693_device *ov5693)
- {
- const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
- struct ov5693_v4l2_ctrls *ctrls = &ov5693->ctrls;
- struct v4l2_fwnode_device_properties props;
- int vblank_max, vblank_def;
- int exposure_max;
- int hblank;
- int ret;
- ret = v4l2_ctrl_handler_init(&ctrls->handler, 12);
- if (ret)
- return ret;
- /* link freq */
- ctrls->link_freq = v4l2_ctrl_new_int_menu(&ctrls->handler,
- NULL, V4L2_CID_LINK_FREQ,
- 0, 0, link_freq_menu_items);
- if (ctrls->link_freq)
- ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- /* pixel rate */
- ctrls->pixel_rate = v4l2_ctrl_new_std(&ctrls->handler, NULL,
- V4L2_CID_PIXEL_RATE, 0,
- OV5693_PIXEL_RATE, 1,
- OV5693_PIXEL_RATE);
- /* Exposure */
- exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN;
- ctrls->exposure = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_EXPOSURE,
- OV5693_EXPOSURE_MIN, exposure_max,
- OV5693_EXPOSURE_STEP, exposure_max);
- /* Gain */
- ctrls->analogue_gain = v4l2_ctrl_new_std(&ctrls->handler,
- ops, V4L2_CID_ANALOGUE_GAIN,
- OV5693_GAIN_MIN,
- OV5693_GAIN_MAX,
- OV5693_GAIN_STEP,
- OV5693_GAIN_DEF);
- ctrls->digital_gain = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_DIGITAL_GAIN,
- OV5693_DIGITAL_GAIN_MIN,
- OV5693_DIGITAL_GAIN_MAX,
- OV5693_DIGITAL_GAIN_STEP,
- OV5693_DIGITAL_GAIN_DEF);
- /* Flip */
- ctrls->hflip = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_HFLIP, 0, 1, 1, 0);
- ctrls->vflip = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
- hblank = OV5693_FIXED_PPL - ov5693->mode.format.width;
- ctrls->hblank = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_HBLANK, hblank,
- hblank, 1, hblank);
- if (ctrls->hblank)
- ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode.format.height;
- vblank_def = ov5693->mode.vts - ov5693->mode.format.height;
- ctrls->vblank = v4l2_ctrl_new_std(&ctrls->handler, ops,
- V4L2_CID_VBLANK,
- OV5693_TIMING_MIN_VTS,
- vblank_max, 1, vblank_def);
- ctrls->test_pattern = v4l2_ctrl_new_std_menu_items(
- &ctrls->handler, ops,
- V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
- 0, 0, ov5693_test_pattern_menu);
- if (ctrls->handler.error) {
- dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
- ret = ctrls->handler.error;
- goto err_free_handler;
- }
- /* set properties from fwnode (e.g. rotation, orientation) */
- ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
- if (ret)
- goto err_free_handler;
- ret = v4l2_ctrl_new_fwnode_properties(&ctrls->handler, ops,
- &props);
- if (ret)
- goto err_free_handler;
- /* Use same lock for controls as for everything else. */
- ctrls->handler.lock = &ov5693->lock;
- ov5693->sd.ctrl_handler = &ctrls->handler;
- return 0;
- err_free_handler:
- v4l2_ctrl_handler_free(&ctrls->handler);
- return ret;
- }
- static int ov5693_configure_gpios(struct ov5693_device *ov5693)
- {
- ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
- GPIOD_OUT_HIGH);
- if (IS_ERR(ov5693->reset)) {
- dev_err(ov5693->dev, "Error fetching reset GPIO\n");
- return PTR_ERR(ov5693->reset);
- }
- ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
- GPIOD_OUT_HIGH);
- if (IS_ERR(ov5693->powerdown)) {
- dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
- return PTR_ERR(ov5693->powerdown);
- }
- return 0;
- }
- static int ov5693_get_regulators(struct ov5693_device *ov5693)
- {
- unsigned int i;
- for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
- ov5693->supplies[i].supply = ov5693_supply_names[i];
- return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
- ov5693->supplies);
- }
- static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
- {
- struct fwnode_handle *fwnode = dev_fwnode(ov5693->dev);
- struct v4l2_fwnode_endpoint bus_cfg = {
- .bus_type = V4L2_MBUS_CSI2_DPHY,
- };
- struct fwnode_handle *endpoint;
- unsigned int i;
- int ret;
- endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
- if (!endpoint)
- return -EPROBE_DEFER; /* Could be provided by cio2-bridge */
- ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg);
- fwnode_handle_put(endpoint);
- if (ret)
- return ret;
- if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) {
- dev_err(ov5693->dev, "only a 2-lane CSI2 config is supported");
- ret = -EINVAL;
- goto out_free_bus_cfg;
- }
- if (!bus_cfg.nr_of_link_frequencies) {
- dev_err(ov5693->dev, "no link frequencies defined\n");
- ret = -EINVAL;
- goto out_free_bus_cfg;
- }
- for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
- if (bus_cfg.link_frequencies[i] == OV5693_LINK_FREQ_419_2MHZ)
- break;
- if (i == bus_cfg.nr_of_link_frequencies) {
- dev_err(ov5693->dev, "supported link freq %ull not found\n",
- OV5693_LINK_FREQ_419_2MHZ);
- ret = -EINVAL;
- goto out_free_bus_cfg;
- }
- out_free_bus_cfg:
- v4l2_fwnode_endpoint_free(&bus_cfg);
- return ret;
- }
- static int ov5693_probe(struct i2c_client *client)
- {
- struct ov5693_device *ov5693;
- u32 xvclk_rate;
- int ret = 0;
- ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
- if (!ov5693)
- return -ENOMEM;
- ov5693->client = client;
- ov5693->dev = &client->dev;
- ret = ov5693_check_hwcfg(ov5693);
- if (ret)
- return ret;
- mutex_init(&ov5693->lock);
- v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
- ov5693->xvclk = devm_clk_get_optional(&client->dev, "xvclk");
- if (IS_ERR(ov5693->xvclk))
- return dev_err_probe(&client->dev, PTR_ERR(ov5693->xvclk),
- "failed to get xvclk: %ld\n",
- PTR_ERR(ov5693->xvclk));
- if (ov5693->xvclk) {
- xvclk_rate = clk_get_rate(ov5693->xvclk);
- } else {
- ret = fwnode_property_read_u32(dev_fwnode(&client->dev),
- "clock-frequency",
- &xvclk_rate);
- if (ret) {
- dev_err(&client->dev, "can't get clock frequency");
- return ret;
- }
- }
- if (xvclk_rate != OV5693_XVCLK_FREQ)
- dev_warn(&client->dev, "Found clk freq %u, expected %u\n",
- xvclk_rate, OV5693_XVCLK_FREQ);
- ret = ov5693_configure_gpios(ov5693);
- if (ret)
- return ret;
- ret = ov5693_get_regulators(ov5693);
- if (ret)
- return dev_err_probe(&client->dev, ret,
- "Error fetching regulators\n");
- ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
- ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
- ov5693->mode.crop = ov5693_default_crop;
- ov5693->mode.format = ov5693_default_fmt;
- ov5693->mode.vts = __ov5693_calc_vts(ov5693->mode.format.height);
- ret = ov5693_init_controls(ov5693);
- if (ret)
- return ret;
- ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
- if (ret)
- goto err_ctrl_handler_free;
- /*
- * We need the driver to work in the event that pm runtime is disable in
- * the kernel, so power up and verify the chip now. In the event that
- * runtime pm is disabled this will leave the chip on, so that streaming
- * will work.
- */
- ret = ov5693_sensor_powerup(ov5693);
- if (ret)
- goto err_media_entity_cleanup;
- ret = ov5693_detect(ov5693);
- if (ret)
- goto err_powerdown;
- pm_runtime_set_active(&client->dev);
- pm_runtime_get_noresume(&client->dev);
- pm_runtime_enable(&client->dev);
- ret = v4l2_async_register_subdev_sensor(&ov5693->sd);
- if (ret) {
- dev_err(&client->dev, "failed to register V4L2 subdev: %d",
- ret);
- goto err_pm_runtime;
- }
- pm_runtime_set_autosuspend_delay(&client->dev, 1000);
- pm_runtime_use_autosuspend(&client->dev);
- pm_runtime_put_autosuspend(&client->dev);
- return ret;
- err_pm_runtime:
- pm_runtime_disable(&client->dev);
- pm_runtime_put_noidle(&client->dev);
- err_powerdown:
- ov5693_sensor_powerdown(ov5693);
- err_media_entity_cleanup:
- media_entity_cleanup(&ov5693->sd.entity);
- err_ctrl_handler_free:
- v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
- return ret;
- }
- static void ov5693_remove(struct i2c_client *client)
- {
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
- v4l2_async_unregister_subdev(sd);
- media_entity_cleanup(&ov5693->sd.entity);
- v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
- mutex_destroy(&ov5693->lock);
- /*
- * Disable runtime PM. In case runtime PM is disabled in the kernel,
- * make sure to turn power off manually.
- */
- pm_runtime_disable(&client->dev);
- if (!pm_runtime_status_suspended(&client->dev))
- ov5693_sensor_powerdown(ov5693);
- pm_runtime_set_suspended(&client->dev);
- }
- static const struct dev_pm_ops ov5693_pm_ops = {
- SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
- };
- static const struct acpi_device_id ov5693_acpi_match[] = {
- {"INT33BE"},
- {},
- };
- MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
- static const struct of_device_id ov5693_of_match[] = {
- { .compatible = "ovti,ov5693", },
- { /* sentinel */ },
- };
- MODULE_DEVICE_TABLE(of, ov5693_of_match);
- static struct i2c_driver ov5693_driver = {
- .driver = {
- .name = "ov5693",
- .acpi_match_table = ov5693_acpi_match,
- .of_match_table = ov5693_of_match,
- .pm = &ov5693_pm_ops,
- },
- .probe_new = ov5693_probe,
- .remove = ov5693_remove,
- };
- module_i2c_driver(ov5693_driver);
- MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
- MODULE_LICENSE("GPL");
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