// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2024-2025 Linaro Ltd #include #include #include #include #include #include #include #include #include #include #include #include #define OV6211_LINK_FREQ_480MHZ (480 * HZ_PER_MHZ) #define OV6211_MCLK_FREQ_24MHZ (24 * HZ_PER_MHZ) #define OV6211_REG_CHIP_ID CCI_REG16(0x300a) #define OV6211_CHIP_ID 0x6710 #define OV6211_REG_MODE_SELECT CCI_REG8(0x0100) #define OV6211_MODE_STANDBY 0x00 #define OV6211_MODE_STREAMING BIT(0) #define OV6211_REG_SOFTWARE_RST CCI_REG8(0x0103) #define OV6211_SOFTWARE_RST BIT(0) /* Exposure controls from sensor */ #define OV6211_REG_EXPOSURE CCI_REG24(0x3500) #define OV6211_EXPOSURE_MIN 1 #define OV6211_EXPOSURE_MAX_MARGIN 4 #define OV6211_EXPOSURE_STEP 1 #define OV6211_EXPOSURE_DEFAULT 210 /* Analogue gain controls from sensor */ #define OV6211_REG_ANALOGUE_GAIN CCI_REG16(0x350a) #define OV6211_ANALOGUE_GAIN_MIN 1 #define OV6211_ANALOGUE_GAIN_MAX 0x3ff #define OV6211_ANALOGUE_GAIN_STEP 1 #define OV6211_ANALOGUE_GAIN_DEFAULT 160 /* Test pattern */ #define OV6211_REG_PRE_ISP CCI_REG8(0x5e00) #define OV6211_TEST_PATTERN_ENABLE BIT(7) #define to_ov6211(_sd) container_of(_sd, struct ov6211, sd) static const s64 ov6211_link_freq_menu[] = { OV6211_LINK_FREQ_480MHZ, }; struct ov6211_reg_list { const struct cci_reg_sequence *regs; unsigned int num_regs; }; struct ov6211_mode { u32 width; /* Frame width in pixels */ u32 height; /* Frame height in pixels */ u32 hts; /* Horizontal timing size */ u32 vts; /* Default vertical timing size */ u32 bpp; /* Bits per pixel */ const struct ov6211_reg_list reg_list; /* Sensor register setting */ }; static const char * const ov6211_test_pattern_menu[] = { "Disabled", "Vertical Colour Bars", }; static const char * const ov6211_supply_names[] = { "avdd", /* Analog power */ "dovdd", /* Digital I/O power */ "dvdd", /* Digital core power */ }; #define OV6211_NUM_SUPPLIES ARRAY_SIZE(ov6211_supply_names) struct ov6211 { struct device *dev; struct regmap *regmap; struct clk *xvclk; struct gpio_desc *reset_gpio; struct regulator_bulk_data supplies[OV6211_NUM_SUPPLIES]; struct v4l2_subdev sd; struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; /* Saved register values */ u64 pre_isp; }; static const struct cci_reg_sequence ov6211_400x400_120fps_mode[] = { { CCI_REG8(0x3005), 0x00 }, { CCI_REG8(0x3013), 0x12 }, { CCI_REG8(0x3014), 0x04 }, { CCI_REG8(0x3016), 0x10 }, { CCI_REG8(0x3017), 0x00 }, { CCI_REG8(0x3018), 0x00 }, { CCI_REG8(0x301a), 0x00 }, { CCI_REG8(0x301b), 0x00 }, { CCI_REG8(0x301c), 0x00 }, { CCI_REG8(0x3037), 0xf0 }, { CCI_REG8(0x3080), 0x01 }, { CCI_REG8(0x3081), 0x00 }, { CCI_REG8(0x3082), 0x01 }, { CCI_REG8(0x3098), 0x04 }, { CCI_REG8(0x3099), 0x28 }, { CCI_REG8(0x309a), 0x06 }, { CCI_REG8(0x309b), 0x04 }, { CCI_REG8(0x309c), 0x00 }, { CCI_REG8(0x309d), 0x00 }, { CCI_REG8(0x309e), 0x01 }, { CCI_REG8(0x309f), 0x00 }, { CCI_REG8(0x30b0), 0x08 }, { CCI_REG8(0x30b1), 0x02 }, { CCI_REG8(0x30b2), 0x00 }, { CCI_REG8(0x30b3), 0x28 }, { CCI_REG8(0x30b4), 0x02 }, { CCI_REG8(0x30b5), 0x00 }, { CCI_REG8(0x3106), 0xd9 }, { CCI_REG8(0x3503), 0x07 }, { CCI_REG8(0x3509), 0x10 }, { CCI_REG8(0x3600), 0xfc }, { CCI_REG8(0x3620), 0xb7 }, { CCI_REG8(0x3621), 0x05 }, { CCI_REG8(0x3626), 0x31 }, { CCI_REG8(0x3627), 0x40 }, { CCI_REG8(0x3632), 0xa3 }, { CCI_REG8(0x3633), 0x34 }, { CCI_REG8(0x3634), 0x40 }, { CCI_REG8(0x3636), 0x00 }, { CCI_REG8(0x3660), 0x80 }, { CCI_REG8(0x3662), 0x03 }, { CCI_REG8(0x3664), 0xf0 }, { CCI_REG8(0x366a), 0x10 }, { CCI_REG8(0x366b), 0x06 }, { CCI_REG8(0x3680), 0xf4 }, { CCI_REG8(0x3681), 0x50 }, { CCI_REG8(0x3682), 0x00 }, { CCI_REG8(0x3708), 0x20 }, { CCI_REG8(0x3709), 0x40 }, { CCI_REG8(0x370d), 0x03 }, { CCI_REG8(0x373b), 0x02 }, { CCI_REG8(0x373c), 0x08 }, { CCI_REG8(0x3742), 0x00 }, { CCI_REG8(0x3744), 0x16 }, { CCI_REG8(0x3745), 0x08 }, { CCI_REG8(0x3781), 0xfc }, { CCI_REG8(0x3788), 0x00 }, { CCI_REG8(0x3800), 0x00 }, { CCI_REG8(0x3801), 0x04 }, { CCI_REG8(0x3802), 0x00 }, { CCI_REG8(0x3803), 0x04 }, { CCI_REG8(0x3804), 0x01 }, { CCI_REG8(0x3805), 0x9b }, { CCI_REG8(0x3806), 0x01 }, { CCI_REG8(0x3807), 0x9b }, { CCI_REG8(0x3808), 0x01 }, /* output width */ { CCI_REG8(0x3809), 0x90 }, { CCI_REG8(0x380a), 0x01 }, /* output height */ { CCI_REG8(0x380b), 0x90 }, { CCI_REG8(0x380c), 0x05 }, /* horizontal timing size */ { CCI_REG8(0x380d), 0xf2 }, { CCI_REG8(0x380e), 0x01 }, /* vertical timing size */ { CCI_REG8(0x380f), 0xb6 }, { CCI_REG8(0x3810), 0x00 }, { CCI_REG8(0x3811), 0x04 }, { CCI_REG8(0x3812), 0x00 }, { CCI_REG8(0x3813), 0x04 }, { CCI_REG8(0x3814), 0x11 }, { CCI_REG8(0x3815), 0x11 }, { CCI_REG8(0x3820), 0x00 }, { CCI_REG8(0x3821), 0x00 }, { CCI_REG8(0x382b), 0xfa }, { CCI_REG8(0x382f), 0x04 }, { CCI_REG8(0x3832), 0x00 }, { CCI_REG8(0x3833), 0x05 }, { CCI_REG8(0x3834), 0x00 }, { CCI_REG8(0x3835), 0x05 }, { CCI_REG8(0x3882), 0x04 }, { CCI_REG8(0x3883), 0x00 }, { CCI_REG8(0x38a4), 0x10 }, { CCI_REG8(0x38a5), 0x00 }, { CCI_REG8(0x38b1), 0x03 }, { CCI_REG8(0x3b80), 0x00 }, { CCI_REG8(0x3b81), 0xff }, { CCI_REG8(0x3b82), 0x10 }, { CCI_REG8(0x3b83), 0x00 }, { CCI_REG8(0x3b84), 0x08 }, { CCI_REG8(0x3b85), 0x00 }, { CCI_REG8(0x3b86), 0x01 }, { CCI_REG8(0x3b87), 0x00 }, { CCI_REG8(0x3b88), 0x00 }, { CCI_REG8(0x3b89), 0x00 }, { CCI_REG8(0x3b8a), 0x00 }, { CCI_REG8(0x3b8b), 0x05 }, { CCI_REG8(0x3b8c), 0x00 }, { CCI_REG8(0x3b8d), 0x00 }, { CCI_REG8(0x3b8e), 0x01 }, { CCI_REG8(0x3b8f), 0xb2 }, { CCI_REG8(0x3b94), 0x05 }, { CCI_REG8(0x3b95), 0xf2 }, { CCI_REG8(0x3b96), 0xc0 }, { CCI_REG8(0x4004), 0x04 }, { CCI_REG8(0x404e), 0x01 }, { CCI_REG8(0x4801), 0x0f }, { CCI_REG8(0x4806), 0x0f }, { CCI_REG8(0x4837), 0x43 }, { CCI_REG8(0x5a08), 0x00 }, { CCI_REG8(0x5a01), 0x00 }, { CCI_REG8(0x5a03), 0x00 }, { CCI_REG8(0x5a04), 0x10 }, { CCI_REG8(0x5a05), 0xa0 }, { CCI_REG8(0x5a06), 0x0c }, { CCI_REG8(0x5a07), 0x78 }, }; static const struct ov6211_mode supported_modes[] = { { .width = 400, .height = 400, .hts = 1522, .vts = 438, .bpp = 8, .reg_list = { .regs = ov6211_400x400_120fps_mode, .num_regs = ARRAY_SIZE(ov6211_400x400_120fps_mode), }, }, }; static int ov6211_set_test_pattern(struct ov6211 *ov6211, u32 pattern) { u64 val = ov6211->pre_isp; if (pattern) val |= OV6211_TEST_PATTERN_ENABLE; else val &= ~OV6211_TEST_PATTERN_ENABLE; return cci_write(ov6211->regmap, OV6211_REG_PRE_ISP, val, NULL); } static int ov6211_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov6211 *ov6211 = container_of(ctrl->handler, struct ov6211, ctrl_handler); int ret; /* V4L2 controls are applied, when sensor is powered up for streaming */ if (!pm_runtime_get_if_active(ov6211->dev)) return 0; switch (ctrl->id) { case V4L2_CID_ANALOGUE_GAIN: ret = cci_write(ov6211->regmap, OV6211_REG_ANALOGUE_GAIN, ctrl->val, NULL); break; case V4L2_CID_EXPOSURE: ret = cci_write(ov6211->regmap, OV6211_REG_EXPOSURE, ctrl->val << 4, NULL); break; case V4L2_CID_TEST_PATTERN: ret = ov6211_set_test_pattern(ov6211, ctrl->val); break; default: ret = -EINVAL; break; } pm_runtime_put(ov6211->dev); return ret; } static const struct v4l2_ctrl_ops ov6211_ctrl_ops = { .s_ctrl = ov6211_set_ctrl, }; static int ov6211_init_controls(struct ov6211 *ov6211) { struct v4l2_ctrl_handler *ctrl_hdlr = &ov6211->ctrl_handler; const struct ov6211_mode *mode = &supported_modes[0]; struct v4l2_fwnode_device_properties props; s64 exposure_max, pixel_rate, h_blank; struct v4l2_ctrl *ctrl; int ret; v4l2_ctrl_handler_init(ctrl_hdlr, 9); ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_LINK_FREQ, ARRAY_SIZE(ov6211_link_freq_menu) - 1, 0, ov6211_link_freq_menu); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; pixel_rate = ov6211_link_freq_menu[0] / mode->bpp; v4l2_ctrl_new_std(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_PIXEL_RATE, 0, pixel_rate, 1, pixel_rate); h_blank = mode->hts - mode->width; ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_VBLANK, mode->vts - mode->height, mode->vts - mode->height, 1, mode->vts - mode->height); if (ctrl) ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, OV6211_ANALOGUE_GAIN_MIN, OV6211_ANALOGUE_GAIN_MAX, OV6211_ANALOGUE_GAIN_STEP, OV6211_ANALOGUE_GAIN_DEFAULT); exposure_max = (mode->vts - OV6211_EXPOSURE_MAX_MARGIN); v4l2_ctrl_new_std(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_EXPOSURE, OV6211_EXPOSURE_MIN, exposure_max, OV6211_EXPOSURE_STEP, OV6211_EXPOSURE_DEFAULT); v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov6211_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov6211_test_pattern_menu) - 1, 0, 0, ov6211_test_pattern_menu); if (ctrl_hdlr->error) return ctrl_hdlr->error; ret = v4l2_fwnode_device_parse(ov6211->dev, &props); if (ret) goto error_free_hdlr; ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov6211_ctrl_ops, &props); if (ret) goto error_free_hdlr; ov6211->sd.ctrl_handler = ctrl_hdlr; return 0; error_free_hdlr: v4l2_ctrl_handler_free(ctrl_hdlr); return ret; } static void ov6211_update_pad_format(const struct ov6211_mode *mode, struct v4l2_mbus_framefmt *fmt) { fmt->code = MEDIA_BUS_FMT_Y8_1X8; fmt->width = mode->width; fmt->height = mode->height; fmt->field = V4L2_FIELD_NONE; fmt->colorspace = V4L2_COLORSPACE_RAW; fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE; fmt->xfer_func = V4L2_XFER_FUNC_NONE; } static int ov6211_enable_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask) { const struct ov6211_reg_list *reg_list = &supported_modes[0].reg_list; struct ov6211 *ov6211 = to_ov6211(sd); int ret; ret = pm_runtime_resume_and_get(ov6211->dev); if (ret) return ret; /* Skip a step of explicit entering into the standby mode */ ret = cci_write(ov6211->regmap, OV6211_REG_SOFTWARE_RST, OV6211_SOFTWARE_RST, NULL); if (ret) { dev_err(ov6211->dev, "failed to software reset: %d\n", ret); goto error; } ret = cci_multi_reg_write(ov6211->regmap, reg_list->regs, reg_list->num_regs, NULL); if (ret) { dev_err(ov6211->dev, "failed to set mode: %d\n", ret); goto error; } ret = __v4l2_ctrl_handler_setup(ov6211->sd.ctrl_handler); if (ret) goto error; ret = cci_write(ov6211->regmap, OV6211_REG_MODE_SELECT, OV6211_MODE_STREAMING, NULL); if (ret) { dev_err(ov6211->dev, "failed to start streaming: %d\n", ret); goto error; } return 0; error: pm_runtime_put_autosuspend(ov6211->dev); return ret; } static int ov6211_disable_streams(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, u32 pad, u64 streams_mask) { struct ov6211 *ov6211 = to_ov6211(sd); int ret; ret = cci_write(ov6211->regmap, OV6211_REG_MODE_SELECT, OV6211_MODE_STANDBY, NULL); if (ret) dev_err(ov6211->dev, "failed to stop streaming: %d\n", ret); pm_runtime_put_autosuspend(ov6211->dev); return ret; } static int ov6211_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *fmt) { struct v4l2_mbus_framefmt *format; const struct ov6211_mode *mode; format = v4l2_subdev_state_get_format(state, 0); mode = v4l2_find_nearest_size(supported_modes, ARRAY_SIZE(supported_modes), width, height, fmt->format.width, fmt->format.height); ov6211_update_pad_format(mode, &fmt->format); *format = fmt->format; return 0; } static int ov6211_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_Y8_1X8; return 0; } static int ov6211_enum_frame_size(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_Y8_1X8) return -EINVAL; fse->min_width = supported_modes[fse->index].width; fse->max_width = fse->min_width; fse->min_height = supported_modes[fse->index].height; fse->max_height = fse->min_height; return 0; } static int ov6211_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *state) { struct v4l2_subdev_format fmt = { .which = V4L2_SUBDEV_FORMAT_TRY, .pad = 0, .format = { .code = MEDIA_BUS_FMT_Y8_1X8, .width = supported_modes[0].width, .height = supported_modes[0].height, }, }; ov6211_set_pad_format(sd, state, &fmt); return 0; } static const struct v4l2_subdev_video_ops ov6211_video_ops = { .s_stream = v4l2_subdev_s_stream_helper, }; static const struct v4l2_subdev_pad_ops ov6211_pad_ops = { .set_fmt = ov6211_set_pad_format, .get_fmt = v4l2_subdev_get_fmt, .enum_mbus_code = ov6211_enum_mbus_code, .enum_frame_size = ov6211_enum_frame_size, .enable_streams = ov6211_enable_streams, .disable_streams = ov6211_disable_streams, }; static const struct v4l2_subdev_ops ov6211_subdev_ops = { .video = &ov6211_video_ops, .pad = &ov6211_pad_ops, }; static const struct v4l2_subdev_internal_ops ov6211_internal_ops = { .init_state = ov6211_init_state, }; static const struct media_entity_operations ov6211_subdev_entity_ops = { .link_validate = v4l2_subdev_link_validate, }; static int ov6211_identify_sensor(struct ov6211 *ov6211) { u64 val; int ret; ret = cci_read(ov6211->regmap, OV6211_REG_CHIP_ID, &val, NULL); if (ret) { dev_err(ov6211->dev, "failed to read chip id: %d\n", ret); return ret; } if (val != OV6211_CHIP_ID) { dev_err(ov6211->dev, "chip id mismatch: %x!=%llx\n", OV6211_CHIP_ID, val); return -ENODEV; } ret = cci_read(ov6211->regmap, OV6211_REG_PRE_ISP, &ov6211->pre_isp, NULL); if (ret) dev_err(ov6211->dev, "failed to read pre_isp: %d\n", ret); return ret; } static int ov6211_check_hwcfg(struct ov6211 *ov6211) { struct fwnode_handle *fwnode = dev_fwnode(ov6211->dev), *ep; struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY, }; unsigned long freq_bitmap; int ret; if (!fwnode) return -ENODEV; ep = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!ep) return -EINVAL; ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); fwnode_handle_put(ep); if (ret) return ret; ret = v4l2_link_freq_to_bitmap(ov6211->dev, bus_cfg.link_frequencies, bus_cfg.nr_of_link_frequencies, ov6211_link_freq_menu, ARRAY_SIZE(ov6211_link_freq_menu), &freq_bitmap); v4l2_fwnode_endpoint_free(&bus_cfg); return ret; } static int ov6211_power_on(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov6211 *ov6211 = to_ov6211(sd); int ret; ret = regulator_bulk_enable(OV6211_NUM_SUPPLIES, ov6211->supplies); if (ret) return ret; gpiod_set_value_cansleep(ov6211->reset_gpio, 0); usleep_range(10 * USEC_PER_MSEC, 15 * USEC_PER_MSEC); ret = clk_prepare_enable(ov6211->xvclk); if (ret) goto reset_gpio; return 0; reset_gpio: gpiod_set_value_cansleep(ov6211->reset_gpio, 1); regulator_bulk_disable(OV6211_NUM_SUPPLIES, ov6211->supplies); return ret; } static int ov6211_power_off(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov6211 *ov6211 = to_ov6211(sd); clk_disable_unprepare(ov6211->xvclk); gpiod_set_value_cansleep(ov6211->reset_gpio, 1); regulator_bulk_disable(OV6211_NUM_SUPPLIES, ov6211->supplies); return 0; } static int ov6211_probe(struct i2c_client *client) { struct ov6211 *ov6211; unsigned long freq; unsigned int i; int ret; ov6211 = devm_kzalloc(&client->dev, sizeof(*ov6211), GFP_KERNEL); if (!ov6211) return -ENOMEM; ov6211->dev = &client->dev; v4l2_i2c_subdev_init(&ov6211->sd, client, &ov6211_subdev_ops); ov6211->regmap = devm_cci_regmap_init_i2c(client, 16); if (IS_ERR(ov6211->regmap)) return dev_err_probe(ov6211->dev, PTR_ERR(ov6211->regmap), "failed to init CCI\n"); ov6211->xvclk = devm_v4l2_sensor_clk_get(ov6211->dev, NULL); if (IS_ERR(ov6211->xvclk)) return dev_err_probe(ov6211->dev, PTR_ERR(ov6211->xvclk), "failed to get XVCLK clock\n"); freq = clk_get_rate(ov6211->xvclk); if (freq && freq != OV6211_MCLK_FREQ_24MHZ) return dev_err_probe(ov6211->dev, -EINVAL, "XVCLK clock frequency %lu is not supported\n", freq); ret = ov6211_check_hwcfg(ov6211); if (ret) return dev_err_probe(ov6211->dev, ret, "failed to check HW configuration\n"); ov6211->reset_gpio = devm_gpiod_get_optional(ov6211->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ov6211->reset_gpio)) return dev_err_probe(ov6211->dev, PTR_ERR(ov6211->reset_gpio), "cannot get reset GPIO\n"); for (i = 0; i < OV6211_NUM_SUPPLIES; i++) ov6211->supplies[i].supply = ov6211_supply_names[i]; ret = devm_regulator_bulk_get(ov6211->dev, OV6211_NUM_SUPPLIES, ov6211->supplies); if (ret) return dev_err_probe(ov6211->dev, ret, "failed to get supply regulators\n"); /* The sensor must be powered on to read the CHIP_ID register */ ret = ov6211_power_on(ov6211->dev); if (ret) return ret; ret = ov6211_identify_sensor(ov6211); if (ret) { dev_err_probe(ov6211->dev, ret, "failed to find sensor\n"); goto power_off; } ret = ov6211_init_controls(ov6211); if (ret) { dev_err_probe(ov6211->dev, ret, "failed to init controls\n"); goto power_off; } ov6211->sd.state_lock = ov6211->ctrl_handler.lock; ov6211->sd.internal_ops = &ov6211_internal_ops; ov6211->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ov6211->sd.entity.ops = &ov6211_subdev_entity_ops; ov6211->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; ov6211->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&ov6211->sd.entity, 1, &ov6211->pad); if (ret) { dev_err_probe(ov6211->dev, ret, "failed to init media entity pads\n"); goto v4l2_ctrl_handler_free; } ret = v4l2_subdev_init_finalize(&ov6211->sd); if (ret < 0) { dev_err_probe(ov6211->dev, ret, "failed to init media entity pads\n"); goto media_entity_cleanup; } pm_runtime_set_active(ov6211->dev); pm_runtime_enable(ov6211->dev); ret = v4l2_async_register_subdev_sensor(&ov6211->sd); if (ret < 0) { dev_err_probe(ov6211->dev, ret, "failed to register V4L2 subdev\n"); goto subdev_cleanup; } /* Enable runtime PM and turn off the device */ pm_runtime_idle(ov6211->dev); pm_runtime_set_autosuspend_delay(ov6211->dev, 1000); pm_runtime_use_autosuspend(ov6211->dev); return 0; subdev_cleanup: v4l2_subdev_cleanup(&ov6211->sd); pm_runtime_disable(ov6211->dev); pm_runtime_set_suspended(ov6211->dev); media_entity_cleanup: media_entity_cleanup(&ov6211->sd.entity); v4l2_ctrl_handler_free: v4l2_ctrl_handler_free(ov6211->sd.ctrl_handler); power_off: ov6211_power_off(ov6211->dev); return ret; } static void ov6211_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov6211 *ov6211 = to_ov6211(sd); v4l2_async_unregister_subdev(sd); v4l2_subdev_cleanup(sd); media_entity_cleanup(&sd->entity); v4l2_ctrl_handler_free(sd->ctrl_handler); pm_runtime_disable(ov6211->dev); if (!pm_runtime_status_suspended(ov6211->dev)) { ov6211_power_off(ov6211->dev); pm_runtime_set_suspended(ov6211->dev); } } static const struct dev_pm_ops ov6211_pm_ops = { SET_RUNTIME_PM_OPS(ov6211_power_off, ov6211_power_on, NULL) }; static const struct of_device_id ov6211_of_match[] = { { .compatible = "ovti,ov6211" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, ov6211_of_match); static struct i2c_driver ov6211_i2c_driver = { .driver = { .name = "ov6211", .pm = &ov6211_pm_ops, .of_match_table = ov6211_of_match, }, .probe = ov6211_probe, .remove = ov6211_remove, }; module_i2c_driver(ov6211_i2c_driver); MODULE_AUTHOR("Vladimir Zapolskiy "); MODULE_DESCRIPTION("OmniVision OV6211 sensor driver"); MODULE_LICENSE("GPL");