Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Mikhail Rudenko | 4830 | 99.96% | 15 | 88.24% |
Sakari Ailus | 1 | 0.02% | 1 | 5.88% |
Uwe Kleine-König | 1 | 0.02% | 1 | 5.88% |
Total | 4832 | 17 |
// SPDX-License-Identifier: GPL-2.0 /* * ov4689 driver * * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. * Copyright (C) 2022, 2024 Mikhail Rudenko */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <media/media-entity.h> #include <media/v4l2-async.h> #include <media/v4l2-cci.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-subdev.h> #include <media/v4l2-fwnode.h> #define OV4689_REG_CTRL_MODE CCI_REG8(0x0100) #define OV4689_MODE_SW_STANDBY 0x0 #define OV4689_MODE_STREAMING BIT(0) #define OV4689_REG_CHIP_ID CCI_REG16(0x300a) #define CHIP_ID 0x004688 #define OV4689_REG_EXPOSURE CCI_REG24(0x3500) #define OV4689_EXPOSURE_MIN 4 #define OV4689_EXPOSURE_STEP 1 #define OV4689_REG_GAIN CCI_REG16(0x3508) #define OV4689_GAIN_STEP 1 #define OV4689_GAIN_DEFAULT 0x80 #define OV4689_REG_DIG_GAIN CCI_REG16(0x352a) #define OV4689_DIG_GAIN_MIN 1 #define OV4689_DIG_GAIN_MAX 0x7fff #define OV4689_DIG_GAIN_STEP 1 #define OV4689_DIG_GAIN_DEFAULT 0x800 #define OV4689_REG_H_CROP_START CCI_REG16(0x3800) #define OV4689_REG_V_CROP_START CCI_REG16(0x3802) #define OV4689_REG_H_CROP_END CCI_REG16(0x3804) #define OV4689_REG_V_CROP_END CCI_REG16(0x3806) #define OV4689_REG_H_OUTPUT_SIZE CCI_REG16(0x3808) #define OV4689_REG_V_OUTPUT_SIZE CCI_REG16(0x380a) #define OV4689_REG_HTS CCI_REG16(0x380c) #define OV4689_HTS_DIVIDER 4 #define OV4689_HTS_MAX 0x7fff #define OV4689_REG_VTS CCI_REG16(0x380e) #define OV4689_VTS_MAX 0x7fff #define OV4689_REG_H_WIN_OFF CCI_REG16(0x3810) #define OV4689_REG_V_WIN_OFF CCI_REG16(0x3812) #define OV4689_REG_TIMING_FORMAT1 CCI_REG8(0x3820) /* Vertical */ #define OV4689_REG_TIMING_FORMAT2 CCI_REG8(0x3821) /* Horizontal */ #define OV4689_TIMING_FLIP_MASK GENMASK(2, 1) #define OV4689_TIMING_FLIP_ARRAY BIT(1) #define OV4689_TIMING_FLIP_DIGITAL BIT(2) #define OV4689_TIMING_FLIP_BOTH (OV4689_TIMING_FLIP_ARRAY |\ OV4689_TIMING_FLIP_DIGITAL) #define OV4689_REG_ANCHOR_LEFT_START CCI_REG16(0x4020) #define OV4689_ANCHOR_LEFT_START_DEF 576 #define OV4689_REG_ANCHOR_LEFT_END CCI_REG16(0x4022) #define OV4689_ANCHOR_LEFT_END_DEF 831 #define OV4689_REG_ANCHOR_RIGHT_START CCI_REG16(0x4024) #define OV4689_ANCHOR_RIGHT_START_DEF 1984 #define OV4689_REG_ANCHOR_RIGHT_END CCI_REG16(0x4026) #define OV4689_ANCHOR_RIGHT_END_DEF 2239 #define OV4689_REG_VFIFO_CTRL_01 CCI_REG8(0x4601) #define OV4689_REG_WB_GAIN_RED CCI_REG16(0x500c) #define OV4689_REG_WB_GAIN_BLUE CCI_REG16(0x5010) #define OV4689_WB_GAIN_MIN 1 #define OV4689_WB_GAIN_MAX 0xfff #define OV4689_WB_GAIN_STEP 1 #define OV4689_WB_GAIN_DEFAULT 0x400 #define OV4689_REG_TEST_PATTERN CCI_REG8(0x5040) #define OV4689_TEST_PATTERN_ENABLE 0x80 #define OV4689_TEST_PATTERN_DISABLE 0x0 #define OV4689_LANES 4 #define OV4689_XVCLK_FREQ 24000000 #define OV4689_PIXEL_ARRAY_WIDTH 2720 #define OV4689_PIXEL_ARRAY_HEIGHT 1536 #define OV4689_DUMMY_ROWS 8 /* 8 dummy rows on each side */ #define OV4689_DUMMY_COLUMNS 16 /* 16 dummy columns on each side */ static const char *const ov4689_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; enum ov4689_mode_id { OV4689_MODE_2688_1520 = 0, OV4689_NUM_MODES, }; struct ov4689_mode { enum ov4689_mode_id id; u32 width; u32 height; u32 hts_def; u32 hts_min; u32 vts_def; u32 exp_def; u32 pixel_rate; const struct cci_reg_sequence *reg_list; unsigned int num_regs; }; struct ov4689 { struct device *dev; struct regmap *regmap; struct clk *xvclk; struct gpio_desc *reset_gpio; struct gpio_desc *pwdn_gpio; struct regulator_bulk_data supplies[ARRAY_SIZE(ov4689_supply_names)]; struct v4l2_subdev subdev; struct media_pad pad; u32 clock_rate; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *exposure; const struct ov4689_mode *cur_mode; }; #define to_ov4689(sd) container_of(sd, struct ov4689, subdev) struct ov4689_gain_range { u32 logical_min; u32 logical_max; u32 offset; u32 divider; u32 physical_min; u32 physical_max; }; /* * Xclk 24Mhz * max_framerate 90fps * mipi_datarate per lane 1008Mbps */ static const struct cci_reg_sequence ov4689_2688x1520_regs[] = { /* System control*/ { CCI_REG8(0x0103), 0x01 }, /* SC_CTRL0103 software_reset = 1 */ { CCI_REG8(0x3000), 0x20 }, /* SC_CMMN_PAD_OEN0 FSIN_output_enable = 1 */ { CCI_REG8(0x3021), 0x03 }, /* * SC_CMMN_MISC_CTRL fst_stby_ctr = 0, * sleep_no_latch_enable = 0 */ /* AEC PK */ { CCI_REG8(0x3503), 0x04 }, /* AEC_MANUAL gain_input_as_sensor_gain_format = 1 */ /* ADC and analog control*/ { CCI_REG8(0x3603), 0x40 }, { CCI_REG8(0x3604), 0x02 }, { CCI_REG8(0x3609), 0x12 }, { CCI_REG8(0x360c), 0x08 }, { CCI_REG8(0x360f), 0xe5 }, { CCI_REG8(0x3608), 0x8f }, { CCI_REG8(0x3611), 0x00 }, { CCI_REG8(0x3613), 0xf7 }, { CCI_REG8(0x3616), 0x58 }, { CCI_REG8(0x3619), 0x99 }, { CCI_REG8(0x361b), 0x60 }, { CCI_REG8(0x361e), 0x79 }, { CCI_REG8(0x3634), 0x10 }, { CCI_REG8(0x3635), 0x10 }, { CCI_REG8(0x3636), 0x15 }, { CCI_REG8(0x3646), 0x86 }, { CCI_REG8(0x364a), 0x0b }, /* Sensor control */ { CCI_REG8(0x3700), 0x17 }, { CCI_REG8(0x3701), 0x22 }, { CCI_REG8(0x3703), 0x10 }, { CCI_REG8(0x370a), 0x37 }, { CCI_REG8(0x3706), 0x63 }, { CCI_REG8(0x3709), 0x3c }, { CCI_REG8(0x370c), 0x30 }, { CCI_REG8(0x3710), 0x24 }, { CCI_REG8(0x3720), 0x28 }, { CCI_REG8(0x3729), 0x7b }, { CCI_REG8(0x372b), 0xbd }, { CCI_REG8(0x372c), 0xbc }, { CCI_REG8(0x372e), 0x52 }, { CCI_REG8(0x373c), 0x0e }, { CCI_REG8(0x373e), 0x33 }, { CCI_REG8(0x3743), 0x10 }, { CCI_REG8(0x3744), 0x88 }, { CCI_REG8(0x3745), 0xc0 }, { CCI_REG8(0x374c), 0x00 }, { CCI_REG8(0x374e), 0x23 }, { CCI_REG8(0x3751), 0x7b }, { CCI_REG8(0x3753), 0xbd }, { CCI_REG8(0x3754), 0xbc }, { CCI_REG8(0x3756), 0x52 }, { CCI_REG8(0x376b), 0x20 }, { CCI_REG8(0x3774), 0x51 }, { CCI_REG8(0x3776), 0xbd }, { CCI_REG8(0x3777), 0xbd }, { CCI_REG8(0x3781), 0x18 }, { CCI_REG8(0x3783), 0x25 }, { CCI_REG8(0x3798), 0x1b }, /* Timing control */ { CCI_REG8(0x3819), 0x01 }, /* VSYNC_END_L vsync_end_point[7:0] = 0x01 */ /* OTP control */ { CCI_REG8(0x3d85), 0x36 }, /* OTP_REG85 OTP_power_up_load_setting_enable = 1, * OTP_power_up_load_data_enable = 1, * OTP_bist_select = 1 (compare with zero) */ { CCI_REG8(0x3d8c), 0x71 }, /* OTP_SETTING_STT_ADDRESS_H */ { CCI_REG8(0x3d8d), 0xcb }, /* OTP_SETTING_STT_ADDRESS_L */ /* BLC registers*/ { CCI_REG8(0x4001), 0x40 }, /* DEBUG_MODE */ { CCI_REG8(0x401b), 0x00 }, /* DEBUG_MODE */ { CCI_REG8(0x401d), 0x00 }, /* DEBUG_MODE */ { CCI_REG8(0x401f), 0x00 }, /* DEBUG_MODE */ /* ADC sync control */ { CCI_REG8(0x4500), 0x6c }, /* ADC_SYNC_CTRL */ { CCI_REG8(0x4503), 0x01 }, /* ADC_SYNC_CTRL */ /* Temperature monitor */ { CCI_REG8(0x4d00), 0x04 }, /* TPM_CTRL_00 tmp_slope[15:8] = 0x04 */ { CCI_REG8(0x4d01), 0x42 }, /* TPM_CTRL_01 tmp_slope[7:0] = 0x42 */ { CCI_REG8(0x4d02), 0xd1 }, /* TPM_CTRL_02 tpm_offset[31:24] = 0xd1 */ { CCI_REG8(0x4d03), 0x93 }, /* TPM_CTRL_03 tpm_offset[23:16] = 0x93 */ { CCI_REG8(0x4d04), 0xf5 }, /* TPM_CTRL_04 tpm_offset[15:8] = 0xf5 */ { CCI_REG8(0x4d05), 0xc1 }, /* TPM_CTRL_05 tpm_offset[7:0] = 0xc1 */ /* pre-ISP control */ { CCI_REG8(0x5050), 0x0c }, /* DEBUG_MODE */ /* OTP-DPC control */ { CCI_REG8(0x5501), 0x10 }, /* OTP_DPC_START_L otp_start_address[7:0] = 0x10 */ { CCI_REG8(0x5503), 0x0f }, /* OTP_DPC_END_L otp_end_address[7:0] = 0x0f */ }; static const struct ov4689_mode supported_modes[] = { { .id = OV4689_MODE_2688_1520, .width = 2688, .height = 1520, .exp_def = 1536, .hts_def = 10296, .hts_min = 3432, .vts_def = 1554, .pixel_rate = 480000000, .reg_list = ov4689_2688x1520_regs, .num_regs = ARRAY_SIZE(ov4689_2688x1520_regs), }, }; static const u64 link_freq_menu_items[] = { 504000000 }; static const char *const ov4689_test_pattern_menu[] = { "Disabled", "Vertical Color Bar Type 1", "Vertical Color Bar Type 2", "Vertical Color Bar Type 3", "Vertical Color Bar Type 4" }; /* * These coefficients are based on those used in Rockchip's camera * engine, with minor tweaks for continuity. */ static const struct ov4689_gain_range ov4689_gain_ranges[] = { { .logical_min = 0, .logical_max = 255, .offset = 0, .divider = 1, .physical_min = 0, .physical_max = 255, }, { .logical_min = 256, .logical_max = 511, .offset = 252, .divider = 2, .physical_min = 376, .physical_max = 504, }, { .logical_min = 512, .logical_max = 1023, .offset = 758, .divider = 4, .physical_min = 884, .physical_max = 1012, }, { .logical_min = 1024, .logical_max = 2047, .offset = 1788, .divider = 8, .physical_min = 1912, .physical_max = 2047, }, }; static void ov4689_fill_fmt(const struct ov4689_mode *mode, struct v4l2_mbus_framefmt *fmt) { fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; fmt->width = mode->width; fmt->height = mode->height; fmt->field = V4L2_FIELD_NONE; } static int ov4689_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *mbus_fmt = &fmt->format; struct ov4689 *ov4689 = to_ov4689(sd); /* only one mode supported for now */ ov4689_fill_fmt(ov4689->cur_mode, mbus_fmt); return 0; } static int ov4689_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { if (code->index != 0) return -EINVAL; code->code = MEDIA_BUS_FMT_SBGGR10_1X10; return 0; } static int ov4689_enum_frame_sizes(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { if (fse->index >= ARRAY_SIZE(supported_modes)) return -EINVAL; if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) return -EINVAL; fse->min_width = supported_modes[fse->index].width; fse->max_width = supported_modes[fse->index].width; fse->max_height = supported_modes[fse->index].height; fse->min_height = supported_modes[fse->index].height; return 0; } static int ov4689_enable_test_pattern(struct ov4689 *ov4689, u32 pattern) { u32 val; if (pattern) val = (pattern - 1) | OV4689_TEST_PATTERN_ENABLE; else val = OV4689_TEST_PATTERN_DISABLE; return cci_write(ov4689->regmap, OV4689_REG_TEST_PATTERN, val, NULL); } static int ov4689_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) return -EINVAL; switch (sel->target) { case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.top = 0; sel->r.left = 0; sel->r.width = OV4689_PIXEL_ARRAY_WIDTH; sel->r.height = OV4689_PIXEL_ARRAY_HEIGHT; return 0; case V4L2_SEL_TGT_CROP: case V4L2_SEL_TGT_CROP_DEFAULT: sel->r.top = OV4689_DUMMY_ROWS; sel->r.left = OV4689_DUMMY_COLUMNS; sel->r.width = OV4689_PIXEL_ARRAY_WIDTH - 2 * OV4689_DUMMY_COLUMNS; sel->r.height = OV4689_PIXEL_ARRAY_HEIGHT - 2 * OV4689_DUMMY_ROWS; return 0; } return -EINVAL; } static int ov4689_setup_timings(struct ov4689 *ov4689) { const struct ov4689_mode *mode = ov4689->cur_mode; struct regmap *rm = ov4689->regmap; int ret = 0; cci_write(rm, OV4689_REG_H_CROP_START, 8, &ret); cci_write(rm, OV4689_REG_V_CROP_START, 8, &ret); cci_write(rm, OV4689_REG_H_CROP_END, 2711, &ret); cci_write(rm, OV4689_REG_V_CROP_END, 1531, &ret); cci_write(rm, OV4689_REG_H_OUTPUT_SIZE, mode->width, &ret); cci_write(rm, OV4689_REG_V_OUTPUT_SIZE, mode->height, &ret); cci_write(rm, OV4689_REG_H_WIN_OFF, 8, &ret); cci_write(rm, OV4689_REG_V_WIN_OFF, 4, &ret); cci_write(rm, OV4689_REG_VFIFO_CTRL_01, 167, &ret); return ret; } static int ov4689_setup_blc_anchors(struct ov4689 *ov4689) { struct regmap *rm = ov4689->regmap; int ret = 0; cci_write(rm, OV4689_REG_ANCHOR_LEFT_START, 16, &ret); cci_write(rm, OV4689_REG_ANCHOR_LEFT_END, 1999, &ret); cci_write(rm, OV4689_REG_ANCHOR_RIGHT_START, 2400, &ret); cci_write(rm, OV4689_REG_ANCHOR_RIGHT_END, 2415, &ret); return ret; } static int ov4689_s_stream(struct v4l2_subdev *sd, int on) { struct ov4689 *ov4689 = to_ov4689(sd); struct v4l2_subdev_state *sd_state; struct device *dev = ov4689->dev; int ret = 0; sd_state = v4l2_subdev_lock_and_get_active_state(&ov4689->subdev); if (on) { ret = pm_runtime_resume_and_get(dev); if (ret < 0) goto unlock_and_return; ret = cci_multi_reg_write(ov4689->regmap, ov4689->cur_mode->reg_list, ov4689->cur_mode->num_regs, NULL); if (ret) { pm_runtime_put(dev); goto unlock_and_return; } ret = ov4689_setup_timings(ov4689); if (ret) { pm_runtime_put(dev); goto unlock_and_return; } ret = ov4689_setup_blc_anchors(ov4689); if (ret) { pm_runtime_put(dev); goto unlock_and_return; } ret = __v4l2_ctrl_handler_setup(&ov4689->ctrl_handler); if (ret) { pm_runtime_put(dev); goto unlock_and_return; } ret = cci_write(ov4689->regmap, OV4689_REG_CTRL_MODE, OV4689_MODE_STREAMING, NULL); if (ret) { pm_runtime_put(dev); goto unlock_and_return; } } else { cci_write(ov4689->regmap, OV4689_REG_CTRL_MODE, OV4689_MODE_SW_STANDBY, NULL); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); } unlock_and_return: v4l2_subdev_unlock_state(sd_state); return ret; } /* Calculate the delay in us by clock rate and clock cycles */ static inline u32 ov4689_cal_delay(struct ov4689 *ov4689, u32 cycles) { return DIV_ROUND_UP(cycles * 1000, DIV_ROUND_UP(ov4689->clock_rate, 1000)); } static int __maybe_unused ov4689_power_on(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov4689 *ov4689 = to_ov4689(sd); u32 delay_us; int ret; ret = clk_prepare_enable(ov4689->xvclk); if (ret < 0) { dev_err(dev, "Failed to enable xvclk\n"); return ret; } gpiod_set_value_cansleep(ov4689->reset_gpio, 1); ret = regulator_bulk_enable(ARRAY_SIZE(ov4689_supply_names), ov4689->supplies); if (ret < 0) { dev_err(dev, "Failed to enable regulators\n"); goto disable_clk; } gpiod_set_value_cansleep(ov4689->reset_gpio, 0); usleep_range(500, 1000); gpiod_set_value_cansleep(ov4689->pwdn_gpio, 0); /* 8192 cycles prior to first SCCB transaction */ delay_us = ov4689_cal_delay(ov4689, 8192); usleep_range(delay_us, delay_us * 2); return 0; disable_clk: clk_disable_unprepare(ov4689->xvclk); return ret; } static int __maybe_unused ov4689_power_off(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov4689 *ov4689 = to_ov4689(sd); gpiod_set_value_cansleep(ov4689->pwdn_gpio, 1); clk_disable_unprepare(ov4689->xvclk); gpiod_set_value_cansleep(ov4689->reset_gpio, 1); regulator_bulk_disable(ARRAY_SIZE(ov4689_supply_names), ov4689->supplies); return 0; } static int ov4689_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state) { struct v4l2_mbus_framefmt *fmt = v4l2_subdev_state_get_format(sd_state, 0); ov4689_fill_fmt(&supported_modes[OV4689_MODE_2688_1520], fmt); return 0; } static const struct dev_pm_ops ov4689_pm_ops = { SET_RUNTIME_PM_OPS(ov4689_power_off, ov4689_power_on, NULL) }; static const struct v4l2_subdev_video_ops ov4689_video_ops = { .s_stream = ov4689_s_stream, }; static const struct v4l2_subdev_pad_ops ov4689_pad_ops = { .enum_mbus_code = ov4689_enum_mbus_code, .enum_frame_size = ov4689_enum_frame_sizes, .get_fmt = v4l2_subdev_get_fmt, .set_fmt = ov4689_set_fmt, .get_selection = ov4689_get_selection, }; static const struct v4l2_subdev_internal_ops ov4689_internal_ops = { .init_state = ov4689_init_state, }; static const struct v4l2_subdev_ops ov4689_subdev_ops = { .video = &ov4689_video_ops, .pad = &ov4689_pad_ops, }; /* * Map userspace (logical) gain to sensor (physical) gain using * ov4689_gain_ranges table. */ static int ov4689_map_gain(struct ov4689 *ov4689, int logical_gain, int *result) { const struct ov4689_gain_range *range; unsigned int n; for (n = 0; n < ARRAY_SIZE(ov4689_gain_ranges); n++) { if (logical_gain >= ov4689_gain_ranges[n].logical_min && logical_gain <= ov4689_gain_ranges[n].logical_max) break; } if (n == ARRAY_SIZE(ov4689_gain_ranges)) { dev_warn_ratelimited(ov4689->dev, "no mapping found for gain %d\n", logical_gain); return -EINVAL; } range = &ov4689_gain_ranges[n]; *result = clamp(range->offset + (logical_gain) / range->divider, range->physical_min, range->physical_max); return 0; } static int ov4689_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov4689 *ov4689 = container_of(ctrl->handler, struct ov4689, ctrl_handler); struct regmap *regmap = ov4689->regmap; struct device *dev = ov4689->dev; int sensor_gain = 0; s64 max_expo; int ret = 0; /* Propagate change of current control to all related controls */ switch (ctrl->id) { case V4L2_CID_VBLANK: /* Update max exposure while meeting expected vblanking */ max_expo = ov4689->cur_mode->height + ctrl->val - 4; __v4l2_ctrl_modify_range(ov4689->exposure, ov4689->exposure->minimum, max_expo, ov4689->exposure->step, ov4689->exposure->default_value); break; } if (!pm_runtime_get_if_in_use(dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: /* 4 least significant bits of exposure are fractional part */ cci_write(regmap, OV4689_REG_EXPOSURE, ctrl->val << 4, &ret); break; case V4L2_CID_ANALOGUE_GAIN: ret = ov4689_map_gain(ov4689, ctrl->val, &sensor_gain); cci_write(regmap, OV4689_REG_GAIN, sensor_gain, &ret); break; case V4L2_CID_VBLANK: cci_write(regmap, OV4689_REG_VTS, ctrl->val + ov4689->cur_mode->height, &ret); break; case V4L2_CID_TEST_PATTERN: ret = ov4689_enable_test_pattern(ov4689, ctrl->val); break; case V4L2_CID_HBLANK: cci_write(regmap, OV4689_REG_HTS, (ctrl->val + ov4689->cur_mode->width) / OV4689_HTS_DIVIDER, &ret); break; case V4L2_CID_VFLIP: cci_update_bits(regmap, OV4689_REG_TIMING_FORMAT1, OV4689_TIMING_FLIP_MASK, ctrl->val ? OV4689_TIMING_FLIP_BOTH : 0, &ret); break; case V4L2_CID_HFLIP: cci_update_bits(regmap, OV4689_REG_TIMING_FORMAT2, OV4689_TIMING_FLIP_MASK, ctrl->val ? 0 : OV4689_TIMING_FLIP_BOTH, &ret); break; case V4L2_CID_DIGITAL_GAIN: cci_write(regmap, OV4689_REG_DIG_GAIN, ctrl->val, &ret); break; case V4L2_CID_RED_BALANCE: cci_write(regmap, OV4689_REG_WB_GAIN_RED, ctrl->val, &ret); break; case V4L2_CID_BLUE_BALANCE: cci_write(regmap, OV4689_REG_WB_GAIN_BLUE, ctrl->val, &ret); break; default: dev_warn(dev, "%s Unhandled id:0x%x, val:0x%x\n", __func__, ctrl->id, ctrl->val); ret = -EINVAL; break; } pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return ret; } static const struct v4l2_ctrl_ops ov4689_ctrl_ops = { .s_ctrl = ov4689_set_ctrl, }; static int ov4689_initialize_controls(struct ov4689 *ov4689) { struct i2c_client *client = v4l2_get_subdevdata(&ov4689->subdev); struct v4l2_fwnode_device_properties props; struct v4l2_ctrl_handler *handler; const struct ov4689_mode *mode; s64 exposure_max, vblank_def; s64 hblank_def, hblank_min; struct v4l2_ctrl *ctrl; int ret; handler = &ov4689->ctrl_handler; mode = ov4689->cur_mode; ret = v4l2_ctrl_handler_init(handler, 15); if (ret) return ret; ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 0, 0, link_freq_menu_items); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 0, mode->pixel_rate, 1, mode->pixel_rate); hblank_def = mode->hts_def - mode->width; hblank_min = mode->hts_min - mode->width; v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_HBLANK, hblank_min, OV4689_HTS_MAX - mode->width, OV4689_HTS_DIVIDER, hblank_def); vblank_def = mode->vts_def - mode->height; v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_VBLANK, vblank_def, OV4689_VTS_MAX - mode->height, 1, vblank_def); exposure_max = mode->vts_def - 4; ov4689->exposure = v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_EXPOSURE, OV4689_EXPOSURE_MIN, exposure_max, OV4689_EXPOSURE_STEP, mode->exp_def); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, ov4689_gain_ranges[0].logical_min, ov4689_gain_ranges[ARRAY_SIZE(ov4689_gain_ranges) - 1] .logical_max, OV4689_GAIN_STEP, OV4689_GAIN_DEFAULT); v4l2_ctrl_new_std_menu_items(handler, &ov4689_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov4689_test_pattern_menu) - 1, 0, 0, ov4689_test_pattern_menu); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_DIGITAL_GAIN, OV4689_DIG_GAIN_MIN, OV4689_DIG_GAIN_MAX, OV4689_DIG_GAIN_STEP, OV4689_DIG_GAIN_DEFAULT); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_RED_BALANCE, OV4689_WB_GAIN_MIN, OV4689_WB_GAIN_MAX, OV4689_WB_GAIN_STEP, OV4689_WB_GAIN_DEFAULT); v4l2_ctrl_new_std(handler, &ov4689_ctrl_ops, V4L2_CID_BLUE_BALANCE, OV4689_WB_GAIN_MIN, OV4689_WB_GAIN_MAX, OV4689_WB_GAIN_STEP, OV4689_WB_GAIN_DEFAULT); if (handler->error) { ret = handler->error; dev_err(ov4689->dev, "Failed to init controls(%d)\n", ret); goto err_free_handler; } ret = v4l2_fwnode_device_parse(&client->dev, &props); if (ret) goto err_free_handler; ret = v4l2_ctrl_new_fwnode_properties(handler, &ov4689_ctrl_ops, &props); if (ret) goto err_free_handler; ov4689->subdev.ctrl_handler = handler; return 0; err_free_handler: v4l2_ctrl_handler_free(handler); return ret; } static int ov4689_check_sensor_id(struct ov4689 *ov4689, struct i2c_client *client) { struct device *dev = ov4689->dev; u64 id = 0; int ret; ret = cci_read(ov4689->regmap, OV4689_REG_CHIP_ID, &id, NULL); if (ret) { dev_err(dev, "Cannot read sensor ID\n"); return ret; } if (id != CHIP_ID) { dev_err(dev, "Unexpected sensor ID %06llx, expected %06x\n", id, CHIP_ID); return -ENODEV; } dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID); return 0; } static int ov4689_configure_regulators(struct ov4689 *ov4689) { unsigned int i; for (i = 0; i < ARRAY_SIZE(ov4689_supply_names); i++) ov4689->supplies[i].supply = ov4689_supply_names[i]; return devm_regulator_bulk_get(ov4689->dev, ARRAY_SIZE(ov4689_supply_names), ov4689->supplies); } static u64 ov4689_check_link_frequency(struct v4l2_fwnode_endpoint *ep) { const u64 *freqs = link_freq_menu_items; unsigned int i, j; for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) { for (j = 0; j < ep->nr_of_link_frequencies; j++) if (freqs[i] == ep->link_frequencies[j]) return freqs[i]; } return 0; } static int ov4689_check_hwcfg(struct device *dev) { struct fwnode_handle *fwnode = dev_fwnode(dev); struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY, }; struct fwnode_handle *endpoint; int ret; endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!endpoint) return -EINVAL; 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 != OV4689_LANES) { dev_err(dev, "Only a 4-lane CSI2 config is supported"); ret = -EINVAL; goto out_free_bus_cfg; } if (!ov4689_check_link_frequency(&bus_cfg)) { dev_err(dev, "No supported link frequency found\n"); ret = -EINVAL; } out_free_bus_cfg: v4l2_fwnode_endpoint_free(&bus_cfg); return ret; } static int ov4689_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct v4l2_subdev *sd; struct ov4689 *ov4689; int ret; ret = ov4689_check_hwcfg(dev); if (ret) return ret; ov4689 = devm_kzalloc(dev, sizeof(*ov4689), GFP_KERNEL); if (!ov4689) return -ENOMEM; ov4689->dev = dev; ov4689->cur_mode = &supported_modes[OV4689_MODE_2688_1520]; ov4689->xvclk = devm_clk_get_optional(dev, NULL); if (IS_ERR(ov4689->xvclk)) return dev_err_probe(dev, PTR_ERR(ov4689->xvclk), "Failed to get external clock\n"); if (!ov4689->xvclk) { dev_dbg(dev, "No clock provided, using clock-frequency property\n"); device_property_read_u32(dev, "clock-frequency", &ov4689->clock_rate); } else { ov4689->clock_rate = clk_get_rate(ov4689->xvclk); } if (ov4689->clock_rate != OV4689_XVCLK_FREQ) { dev_err(dev, "External clock rate mismatch: got %d Hz, expected %d Hz\n", ov4689->clock_rate, OV4689_XVCLK_FREQ); return -EINVAL; } ov4689->regmap = devm_cci_regmap_init_i2c(client, 16); if (IS_ERR(ov4689->regmap)) { ret = PTR_ERR(ov4689->regmap); dev_err(dev, "failed to initialize CCI: %d\n", ret); return ret; } ov4689->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ov4689->reset_gpio)) { dev_err(dev, "Failed to get reset-gpios\n"); return PTR_ERR(ov4689->reset_gpio); } ov4689->pwdn_gpio = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_LOW); if (IS_ERR(ov4689->pwdn_gpio)) { dev_err(dev, "Failed to get pwdn-gpios\n"); return PTR_ERR(ov4689->pwdn_gpio); } ret = ov4689_configure_regulators(ov4689); if (ret) return dev_err_probe(dev, ret, "Failed to get power regulators\n"); sd = &ov4689->subdev; v4l2_i2c_subdev_init(sd, client, &ov4689_subdev_ops); sd->internal_ops = &ov4689_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ret = ov4689_initialize_controls(ov4689); if (ret) { dev_err(dev, "Failed to initialize controls\n"); return ret; } ret = ov4689_power_on(dev); if (ret) goto err_free_handler; ret = ov4689_check_sensor_id(ov4689, client); if (ret) goto err_power_off; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ov4689->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&sd->entity, 1, &ov4689->pad); if (ret < 0) goto err_power_off; sd->state_lock = ov4689->ctrl_handler.lock; ret = v4l2_subdev_init_finalize(sd); if (ret) { dev_err(dev, "Could not register v4l2 device\n"); goto err_clean_entity; } pm_runtime_set_active(dev); pm_runtime_get_noresume(dev); pm_runtime_enable(dev); pm_runtime_set_autosuspend_delay(dev, 1000); pm_runtime_use_autosuspend(dev); ret = v4l2_async_register_subdev_sensor(sd); if (ret) { dev_err(dev, "v4l2 async register subdev failed\n"); goto err_clean_subdev_pm; } pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return 0; err_clean_subdev_pm: pm_runtime_disable(dev); pm_runtime_put_noidle(dev); v4l2_subdev_cleanup(sd); err_clean_entity: media_entity_cleanup(&sd->entity); err_power_off: ov4689_power_off(dev); err_free_handler: v4l2_ctrl_handler_free(&ov4689->ctrl_handler); return ret; } static void ov4689_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov4689 *ov4689 = to_ov4689(sd); v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_subdev_cleanup(sd); v4l2_ctrl_handler_free(&ov4689->ctrl_handler); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) ov4689_power_off(&client->dev); pm_runtime_set_suspended(&client->dev); } static const struct of_device_id ov4689_of_match[] = { { .compatible = "ovti,ov4689" }, {}, }; MODULE_DEVICE_TABLE(of, ov4689_of_match); static struct i2c_driver ov4689_i2c_driver = { .driver = { .name = "ov4689", .pm = &ov4689_pm_ops, .of_match_table = ov4689_of_match, }, .probe = ov4689_probe, .remove = ov4689_remove, }; module_i2c_driver(ov4689_i2c_driver); MODULE_DESCRIPTION("OmniVision ov4689 sensor driver"); MODULE_LICENSE("GPL");
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