// SPDX-License-Identifier: GPL-2.0-only /* * Sony imx335 Camera Sensor Driver * * Copyright (C) 2021 Intel Corporation */ #include #include #include #include #include #include #include #include #include #include #include /* Streaming Mode */ #define IMX335_REG_MODE_SELECT CCI_REG8(0x3000) #define IMX335_MODE_STANDBY 0x01 #define IMX335_MODE_STREAMING 0x00 /* Group hold register */ #define IMX335_REG_HOLD CCI_REG8(0x3001) #define IMX335_REG_MASTER_MODE CCI_REG8(0x3002) #define IMX335_REG_BCWAIT_TIME CCI_REG8(0x300c) #define IMX335_REG_CPWAIT_TIME CCI_REG8(0x300d) #define IMX335_REG_WINMODE CCI_REG8(0x3018) #define IMX335_REG_HTRIMMING_START CCI_REG16_LE(0x302c) #define IMX335_REG_HNUM CCI_REG8(0x302e) /* Lines per frame */ #define IMX335_REG_VMAX CCI_REG24_LE(0x3030) #define IMX335_REG_OPB_SIZE_V CCI_REG8(0x304c) #define IMX335_REG_ADBIT CCI_REG8(0x3050) #define IMX335_REG_Y_OUT_SIZE CCI_REG16_LE(0x3056) #define IMX335_REG_SHUTTER CCI_REG24_LE(0x3058) #define IMX335_EXPOSURE_MIN 1 #define IMX335_EXPOSURE_OFFSET 9 #define IMX335_EXPOSURE_STEP 1 #define IMX335_EXPOSURE_DEFAULT 0x0648 #define IMX335_REG_AREA3_ST_ADR_1 CCI_REG16_LE(0x3074) #define IMX335_REG_AREA3_WIDTH_1 CCI_REG16_LE(0x3076) /* Analog and Digital gain control */ #define IMX335_REG_GAIN CCI_REG8(0x30e8) #define IMX335_AGAIN_MIN 0 #define IMX335_AGAIN_MAX 100 #define IMX335_AGAIN_STEP 1 #define IMX335_AGAIN_DEFAULT 0 #define IMX335_REG_TPG_TESTCLKEN CCI_REG8(0x3148) #define IMX335_REG_INCLKSEL1 CCI_REG16_LE(0x314c) #define IMX335_REG_INCLKSEL2 CCI_REG8(0x315a) #define IMX335_REG_INCLKSEL3 CCI_REG8(0x3168) #define IMX335_REG_INCLKSEL4 CCI_REG8(0x316a) #define IMX335_REG_MDBIT CCI_REG8(0x319d) #define IMX335_REG_SYSMODE CCI_REG8(0x319e) #define IMX335_REG_XVS_XHS_DRV CCI_REG8(0x31a1) /* Test pattern generator */ #define IMX335_REG_TPG_DIG_CLP_MODE CCI_REG8(0x3280) #define IMX335_REG_TPG_EN_DUOUT CCI_REG8(0x329c) #define IMX335_REG_TPG CCI_REG8(0x329e) #define IMX335_TPG_ALL_000 0 #define IMX335_TPG_ALL_FFF 1 #define IMX335_TPG_ALL_555 2 #define IMX335_TPG_ALL_AAA 3 #define IMX335_TPG_TOG_555_AAA 4 #define IMX335_TPG_TOG_AAA_555 5 #define IMX335_TPG_TOG_000_555 6 #define IMX335_TPG_TOG_555_000 7 #define IMX335_TPG_TOG_000_FFF 8 #define IMX335_TPG_TOG_FFF_000 9 #define IMX335_TPG_H_COLOR_BARS 10 #define IMX335_TPG_V_COLOR_BARS 11 #define IMX335_REG_TPG_COLORWIDTH CCI_REG8(0x32a0) #define IMX335_REG_BLKLEVEL CCI_REG16_LE(0x3302) #define IMX335_REG_WRJ_OPEN CCI_REG8(0x336c) #define IMX335_REG_ADBIT1 CCI_REG16_LE(0x341c) /* Chip ID */ #define IMX335_REG_ID CCI_REG8(0x3912) #define IMX335_ID 0x00 /* Data Lanes */ #define IMX335_REG_LANEMODE CCI_REG8(0x3a01) #define IMX335_2LANE 1 #define IMX335_4LANE 3 #define IMX335_REG_TCLKPOST CCI_REG16_LE(0x3a18) #define IMX335_REG_TCLKPREPARE CCI_REG16_LE(0x3a1a) #define IMX335_REG_TCLK_TRAIL CCI_REG16_LE(0x3a1c) #define IMX335_REG_TCLK_ZERO CCI_REG16_LE(0x3a1e) #define IMX335_REG_THS_PREPARE CCI_REG16_LE(0x3a20) #define IMX335_REG_THS_ZERO CCI_REG16_LE(0x3a22) #define IMX335_REG_THS_TRAIL CCI_REG16_LE(0x3a24) #define IMX335_REG_THS_EXIT CCI_REG16_LE(0x3a26) #define IMX335_REG_TPLX CCI_REG16_LE(0x3a28) /* Input clock rate */ #define IMX335_INCLK_RATE 24000000 /* CSI2 HW configuration */ #define IMX335_LINK_FREQ_594MHz 594000000LL #define IMX335_LINK_FREQ_445MHz 445500000LL #define IMX335_NUM_DATA_LANES 4 /* IMX335 native and active pixel array size. */ #define IMX335_NATIVE_WIDTH 2616U #define IMX335_NATIVE_HEIGHT 1964U #define IMX335_PIXEL_ARRAY_LEFT 12U #define IMX335_PIXEL_ARRAY_TOP 12U #define IMX335_PIXEL_ARRAY_WIDTH 2592U #define IMX335_PIXEL_ARRAY_HEIGHT 1944U /** * struct imx335_reg_list - imx335 sensor register list * @num_of_regs: Number of registers in the list * @regs: Pointer to register list */ struct imx335_reg_list { u32 num_of_regs; const struct cci_reg_sequence *regs; }; static const char * const imx335_supply_name[] = { "avdd", /* Analog (2.9V) supply */ "ovdd", /* Digital I/O (1.8V) supply */ "dvdd", /* Digital Core (1.2V) supply */ }; /** * struct imx335_mode - imx335 sensor mode structure * @width: Frame width * @height: Frame height * @code: Format code * @hblank: Horizontal blanking in lines * @vblank: Vertical blanking in lines * @vblank_min: Minimum vertical blanking in lines * @vblank_max: Maximum vertical blanking in lines * @pclk: Sensor pixel clock * @reg_list: Register list for sensor mode */ struct imx335_mode { u32 width; u32 height; u32 code; u32 hblank; u32 vblank; u32 vblank_min; u32 vblank_max; u64 pclk; struct imx335_reg_list reg_list; }; /** * struct imx335 - imx335 sensor device structure * @dev: Pointer to generic device * @client: Pointer to i2c client * @sd: V4L2 sub-device * @pad: Media pad. Only one pad supported * @reset_gpio: Sensor reset gpio * @supplies: Regulator supplies to handle power control * @cci: CCI register map * @inclk: Sensor input clock * @ctrl_handler: V4L2 control handler * @link_freq_ctrl: Pointer to link frequency control * @pclk_ctrl: Pointer to pixel clock control * @hblank_ctrl: Pointer to horizontal blanking control * @vblank_ctrl: Pointer to vertical blanking control * @exp_ctrl: Pointer to exposure control * @again_ctrl: Pointer to analog gain control * @vblank: Vertical blanking in lines * @lane_mode: Mode for number of connected data lanes * @cur_mode: Pointer to current selected sensor mode * @mutex: Mutex for serializing sensor controls * @link_freq_bitmap: Menu bitmap for link_freq_ctrl * @cur_mbus_code: Currently selected media bus format code */ struct imx335 { struct device *dev; struct i2c_client *client; struct v4l2_subdev sd; struct media_pad pad; struct gpio_desc *reset_gpio; struct regulator_bulk_data supplies[ARRAY_SIZE(imx335_supply_name)]; struct regmap *cci; struct clk *inclk; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *link_freq_ctrl; struct v4l2_ctrl *pclk_ctrl; struct v4l2_ctrl *hblank_ctrl; struct v4l2_ctrl *vblank_ctrl; struct { struct v4l2_ctrl *exp_ctrl; struct v4l2_ctrl *again_ctrl; }; u32 vblank; u32 lane_mode; const struct imx335_mode *cur_mode; struct mutex mutex; unsigned long link_freq_bitmap; u32 cur_mbus_code; }; static const char * const imx335_tpg_menu[] = { "Disabled", "All 000h", "All FFFh", "All 555h", "All AAAh", "Toggle 555/AAAh", "Toggle AAA/555h", "Toggle 000/555h", "Toggle 555/000h", "Toggle 000/FFFh", "Toggle FFF/000h", "Horizontal color bars", "Vertical color bars", }; static const int imx335_tpg_val[] = { IMX335_TPG_ALL_000, IMX335_TPG_ALL_000, IMX335_TPG_ALL_FFF, IMX335_TPG_ALL_555, IMX335_TPG_ALL_AAA, IMX335_TPG_TOG_555_AAA, IMX335_TPG_TOG_AAA_555, IMX335_TPG_TOG_000_555, IMX335_TPG_TOG_555_000, IMX335_TPG_TOG_000_FFF, IMX335_TPG_TOG_FFF_000, IMX335_TPG_H_COLOR_BARS, IMX335_TPG_V_COLOR_BARS, }; /* Sensor mode registers */ static const struct cci_reg_sequence mode_2592x1940_regs[] = { { IMX335_REG_MODE_SELECT, IMX335_MODE_STANDBY }, { IMX335_REG_MASTER_MODE, 0x00 }, { IMX335_REG_WINMODE, 0x04 }, { IMX335_REG_HTRIMMING_START, 48 }, { IMX335_REG_HNUM, 2592 }, { IMX335_REG_Y_OUT_SIZE, 1944 }, { IMX335_REG_AREA3_ST_ADR_1, 176 }, { IMX335_REG_AREA3_WIDTH_1, 3928 }, { IMX335_REG_OPB_SIZE_V, 0 }, { IMX335_REG_XVS_XHS_DRV, 0x00 }, { CCI_REG8(0x3288), 0x21 }, { CCI_REG8(0x328a), 0x02 }, { CCI_REG8(0x3414), 0x05 }, { CCI_REG8(0x3416), 0x18 }, { CCI_REG8(0x3648), 0x01 }, { CCI_REG8(0x364a), 0x04 }, { CCI_REG8(0x364c), 0x04 }, { CCI_REG8(0x3678), 0x01 }, { CCI_REG8(0x367c), 0x31 }, { CCI_REG8(0x367e), 0x31 }, { CCI_REG8(0x3706), 0x10 }, { CCI_REG8(0x3708), 0x03 }, { CCI_REG8(0x3714), 0x02 }, { CCI_REG8(0x3715), 0x02 }, { CCI_REG8(0x3716), 0x01 }, { CCI_REG8(0x3717), 0x03 }, { CCI_REG8(0x371c), 0x3d }, { CCI_REG8(0x371d), 0x3f }, { CCI_REG8(0x372c), 0x00 }, { CCI_REG8(0x372d), 0x00 }, { CCI_REG8(0x372e), 0x46 }, { CCI_REG8(0x372f), 0x00 }, { CCI_REG8(0x3730), 0x89 }, { CCI_REG8(0x3731), 0x00 }, { CCI_REG8(0x3732), 0x08 }, { CCI_REG8(0x3733), 0x01 }, { CCI_REG8(0x3734), 0xfe }, { CCI_REG8(0x3735), 0x05 }, { CCI_REG8(0x3740), 0x02 }, { CCI_REG8(0x375d), 0x00 }, { CCI_REG8(0x375e), 0x00 }, { CCI_REG8(0x375f), 0x11 }, { CCI_REG8(0x3760), 0x01 }, { CCI_REG8(0x3768), 0x1b }, { CCI_REG8(0x3769), 0x1b }, { CCI_REG8(0x376a), 0x1b }, { CCI_REG8(0x376b), 0x1b }, { CCI_REG8(0x376c), 0x1a }, { CCI_REG8(0x376d), 0x17 }, { CCI_REG8(0x376e), 0x0f }, { CCI_REG8(0x3776), 0x00 }, { CCI_REG8(0x3777), 0x00 }, { CCI_REG8(0x3778), 0x46 }, { CCI_REG8(0x3779), 0x00 }, { CCI_REG8(0x377a), 0x89 }, { CCI_REG8(0x377b), 0x00 }, { CCI_REG8(0x377c), 0x08 }, { CCI_REG8(0x377d), 0x01 }, { CCI_REG8(0x377e), 0x23 }, { CCI_REG8(0x377f), 0x02 }, { CCI_REG8(0x3780), 0xd9 }, { CCI_REG8(0x3781), 0x03 }, { CCI_REG8(0x3782), 0xf5 }, { CCI_REG8(0x3783), 0x06 }, { CCI_REG8(0x3784), 0xa5 }, { CCI_REG8(0x3788), 0x0f }, { CCI_REG8(0x378a), 0xd9 }, { CCI_REG8(0x378b), 0x03 }, { CCI_REG8(0x378c), 0xeb }, { CCI_REG8(0x378d), 0x05 }, { CCI_REG8(0x378e), 0x87 }, { CCI_REG8(0x378f), 0x06 }, { CCI_REG8(0x3790), 0xf5 }, { CCI_REG8(0x3792), 0x43 }, { CCI_REG8(0x3794), 0x7a }, { CCI_REG8(0x3796), 0xa1 }, { CCI_REG8(0x37b0), 0x36 }, { CCI_REG8(0x3a00), 0x00 }, }; static const struct cci_reg_sequence raw10_framefmt_regs[] = { { IMX335_REG_ADBIT, 0x00 }, { IMX335_REG_MDBIT, 0x00 }, { IMX335_REG_ADBIT1, 0x1ff }, }; static const struct cci_reg_sequence raw12_framefmt_regs[] = { { IMX335_REG_ADBIT, 0x01 }, { IMX335_REG_MDBIT, 0x01 }, { IMX335_REG_ADBIT1, 0x47 }, }; static const struct cci_reg_sequence mipi_data_rate_1188Mbps[] = { { IMX335_REG_BCWAIT_TIME, 0x3b }, { IMX335_REG_CPWAIT_TIME, 0x2a }, { IMX335_REG_INCLKSEL1, 0x00c6 }, { IMX335_REG_INCLKSEL2, 0x02 }, { IMX335_REG_INCLKSEL3, 0xa0 }, { IMX335_REG_INCLKSEL4, 0x7e }, { IMX335_REG_SYSMODE, 0x01 }, { IMX335_REG_TCLKPOST, 0x8f }, { IMX335_REG_TCLKPREPARE, 0x4f }, { IMX335_REG_TCLK_TRAIL, 0x47 }, { IMX335_REG_TCLK_ZERO, 0x0137 }, { IMX335_REG_THS_PREPARE, 0x4f }, { IMX335_REG_THS_ZERO, 0x87 }, { IMX335_REG_THS_TRAIL, 0x4f }, { IMX335_REG_THS_EXIT, 0x7f }, { IMX335_REG_TPLX, 0x3f }, }; static const struct cci_reg_sequence mipi_data_rate_891Mbps[] = { { IMX335_REG_BCWAIT_TIME, 0x3b }, { IMX335_REG_CPWAIT_TIME, 0x2a }, { IMX335_REG_INCLKSEL1, 0x0129 }, { IMX335_REG_INCLKSEL2, 0x06 }, { IMX335_REG_INCLKSEL3, 0xa0 }, { IMX335_REG_INCLKSEL4, 0x7e }, { IMX335_REG_SYSMODE, 0x02 }, { IMX335_REG_TCLKPOST, 0x7f }, { IMX335_REG_TCLKPREPARE, 0x37 }, { IMX335_REG_TCLK_TRAIL, 0x37 }, { IMX335_REG_TCLK_ZERO, 0xf7 }, { IMX335_REG_THS_PREPARE, 0x3f }, { IMX335_REG_THS_ZERO, 0x6f }, { IMX335_REG_THS_TRAIL, 0x3f }, { IMX335_REG_THS_EXIT, 0x5f }, { IMX335_REG_TPLX, 0x2f }, }; static const s64 link_freq[] = { /* Corresponds to 1188Mbps data lane rate */ IMX335_LINK_FREQ_594MHz, /* Corresponds to 891Mbps data lane rate */ IMX335_LINK_FREQ_445MHz, }; static const struct imx335_reg_list link_freq_reglist[] = { { .num_of_regs = ARRAY_SIZE(mipi_data_rate_1188Mbps), .regs = mipi_data_rate_1188Mbps, }, { .num_of_regs = ARRAY_SIZE(mipi_data_rate_891Mbps), .regs = mipi_data_rate_891Mbps, }, }; static const u32 imx335_mbus_codes[] = { MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB10_1X10, }; /* Supported sensor mode configurations */ static const struct imx335_mode supported_mode = { .width = 2592, .height = 1944, .hblank = 342, .vblank = 2556, .vblank_min = 2556, .vblank_max = 133060, .pclk = 396000000, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_2592x1940_regs), .regs = mode_2592x1940_regs, }, }; /** * to_imx335() - imx335 V4L2 sub-device to imx335 device. * @subdev: pointer to imx335 V4L2 sub-device * * Return: pointer to imx335 device */ static inline struct imx335 *to_imx335(struct v4l2_subdev *subdev) { return container_of(subdev, struct imx335, sd); } /** * imx335_update_controls() - Update control ranges based on streaming mode * @imx335: pointer to imx335 device * @mode: pointer to imx335_mode sensor mode * * Return: 0 if successful, error code otherwise. */ static int imx335_update_controls(struct imx335 *imx335, const struct imx335_mode *mode) { int ret; ret = __v4l2_ctrl_s_ctrl(imx335->link_freq_ctrl, __ffs(imx335->link_freq_bitmap)); if (ret) return ret; ret = __v4l2_ctrl_s_ctrl(imx335->hblank_ctrl, mode->hblank); if (ret) return ret; return __v4l2_ctrl_modify_range(imx335->vblank_ctrl, mode->vblank_min, mode->vblank_max, 1, mode->vblank); } /** * imx335_update_exp_gain() - Set updated exposure and gain * @imx335: pointer to imx335 device * @exposure: updated exposure value * @gain: updated analog gain value * * Return: 0 if successful, error code otherwise. */ static int imx335_update_exp_gain(struct imx335 *imx335, u32 exposure, u32 gain) { u32 lpfr, shutter; int ret_hold; int ret = 0; lpfr = imx335->vblank + imx335->cur_mode->height; shutter = lpfr - exposure; dev_dbg(imx335->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u\n", exposure, gain, shutter, lpfr); cci_write(imx335->cci, IMX335_REG_HOLD, 1, &ret); cci_write(imx335->cci, IMX335_REG_VMAX, lpfr, &ret); cci_write(imx335->cci, IMX335_REG_SHUTTER, shutter, &ret); cci_write(imx335->cci, IMX335_REG_GAIN, gain, &ret); /* * Unconditionally attempt to release the hold, but track the * error if the unhold itself fails. */ ret_hold = cci_write(imx335->cci, IMX335_REG_HOLD, 0, NULL); if (ret_hold) ret = ret_hold; return ret; } static int imx335_update_test_pattern(struct imx335 *imx335, u32 pattern_index) { int ret = 0; if (pattern_index >= ARRAY_SIZE(imx335_tpg_val)) return -EINVAL; if (pattern_index) { const struct cci_reg_sequence tpg_enable_regs[] = { { IMX335_REG_TPG_TESTCLKEN, 0x10 }, { IMX335_REG_TPG_DIG_CLP_MODE, 0x00 }, { IMX335_REG_TPG_EN_DUOUT, 0x01 }, { IMX335_REG_TPG_COLORWIDTH, 0x11 }, { IMX335_REG_BLKLEVEL, 0x00 }, { IMX335_REG_WRJ_OPEN, 0x00 }, }; cci_write(imx335->cci, IMX335_REG_TPG, imx335_tpg_val[pattern_index], &ret); cci_multi_reg_write(imx335->cci, tpg_enable_regs, ARRAY_SIZE(tpg_enable_regs), &ret); } else { const struct cci_reg_sequence tpg_disable_regs[] = { { IMX335_REG_TPG_TESTCLKEN, 0x00 }, { IMX335_REG_TPG_DIG_CLP_MODE, 0x01 }, { IMX335_REG_TPG_EN_DUOUT, 0x00 }, { IMX335_REG_TPG_COLORWIDTH, 0x10 }, { IMX335_REG_BLKLEVEL, 0x32 }, { IMX335_REG_WRJ_OPEN, 0x01 }, }; cci_multi_reg_write(imx335->cci, tpg_disable_regs, ARRAY_SIZE(tpg_disable_regs), &ret); } return ret; } /** * imx335_set_ctrl() - Set subdevice control * @ctrl: pointer to v4l2_ctrl structure * * Supported controls: * - V4L2_CID_VBLANK * - cluster controls: * - V4L2_CID_ANALOGUE_GAIN * - V4L2_CID_EXPOSURE * * Return: 0 if successful, error code otherwise. */ static int imx335_set_ctrl(struct v4l2_ctrl *ctrl) { struct imx335 *imx335 = container_of(ctrl->handler, struct imx335, ctrl_handler); u32 analog_gain; u32 exposure; int ret; /* Propagate change of current control to all related controls */ if (ctrl->id == V4L2_CID_VBLANK) { imx335->vblank = imx335->vblank_ctrl->val; dev_dbg(imx335->dev, "Received vblank %u, new lpfr %u\n", imx335->vblank, imx335->vblank + imx335->cur_mode->height); return __v4l2_ctrl_modify_range(imx335->exp_ctrl, IMX335_EXPOSURE_MIN, imx335->vblank + imx335->cur_mode->height - IMX335_EXPOSURE_OFFSET, 1, IMX335_EXPOSURE_DEFAULT); } /* * Applying V4L2 control value only happens * when power is up for streaming. */ if (pm_runtime_get_if_in_use(imx335->dev) == 0) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: exposure = ctrl->val; analog_gain = imx335->again_ctrl->val; dev_dbg(imx335->dev, "Received exp %u, analog gain %u\n", exposure, analog_gain); ret = imx335_update_exp_gain(imx335, exposure, analog_gain); break; case V4L2_CID_TEST_PATTERN: ret = imx335_update_test_pattern(imx335, ctrl->val); break; default: dev_err(imx335->dev, "Invalid control %d\n", ctrl->id); ret = -EINVAL; } pm_runtime_put(imx335->dev); return ret; } /* V4l2 subdevice control ops*/ static const struct v4l2_ctrl_ops imx335_ctrl_ops = { .s_ctrl = imx335_set_ctrl, }; static int imx335_get_format_code(struct imx335 *imx335, u32 code) { unsigned int i; for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) { if (imx335_mbus_codes[i] == code) return imx335_mbus_codes[i]; } return imx335_mbus_codes[0]; } /** * imx335_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * @code: V4L2 sub-device code enumeration need to be filled * * Return: 0 if successful, error code otherwise. */ static int imx335_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { if (code->index >= ARRAY_SIZE(imx335_mbus_codes)) return -EINVAL; code->code = imx335_mbus_codes[code->index]; return 0; } /** * imx335_enum_frame_size() - Enumerate V4L2 sub-device frame sizes * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * @fsize: V4L2 sub-device size enumeration need to be filled * * Return: 0 if successful, error code otherwise. */ static int imx335_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fsize) { struct imx335 *imx335 = to_imx335(sd); u32 code; if (fsize->index > ARRAY_SIZE(imx335_mbus_codes)) return -EINVAL; code = imx335_get_format_code(imx335, fsize->code); if (fsize->code != code) return -EINVAL; fsize->min_width = supported_mode.width; fsize->max_width = fsize->min_width; fsize->min_height = supported_mode.height; fsize->max_height = fsize->min_height; return 0; } /** * imx335_fill_pad_format() - Fill subdevice pad format * from selected sensor mode * @imx335: pointer to imx335 device * @mode: pointer to imx335_mode sensor mode * @fmt: V4L2 sub-device format need to be filled */ static void imx335_fill_pad_format(struct imx335 *imx335, const struct imx335_mode *mode, struct v4l2_subdev_format *fmt) { fmt->format.width = mode->width; fmt->format.height = mode->height; fmt->format.code = imx335->cur_mbus_code; fmt->format.field = V4L2_FIELD_NONE; fmt->format.colorspace = V4L2_COLORSPACE_RAW; fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT; fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; } /** * imx335_get_pad_format() - Get subdevice pad format * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * @fmt: V4L2 sub-device format need to be set * * Return: 0 if successful, error code otherwise. */ static int imx335_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct imx335 *imx335 = to_imx335(sd); mutex_lock(&imx335->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { struct v4l2_mbus_framefmt *framefmt; framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad); fmt->format = *framefmt; } else { imx335_fill_pad_format(imx335, imx335->cur_mode, fmt); } mutex_unlock(&imx335->mutex); return 0; } /** * imx335_set_pad_format() - Set subdevice pad format * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * @fmt: V4L2 sub-device format need to be set * * Return: 0 if successful, error code otherwise. */ static int imx335_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct imx335 *imx335 = to_imx335(sd); const struct imx335_mode *mode; int i, ret = 0; mutex_lock(&imx335->mutex); mode = &supported_mode; for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) { if (imx335_mbus_codes[i] == fmt->format.code) imx335->cur_mbus_code = imx335_mbus_codes[i]; } imx335_fill_pad_format(imx335, mode, fmt); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { struct v4l2_mbus_framefmt *framefmt; framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad); *framefmt = fmt->format; } else { ret = imx335_update_controls(imx335, mode); if (!ret) imx335->cur_mode = mode; } mutex_unlock(&imx335->mutex); return ret; } /** * imx335_init_state() - Initialize sub-device state * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * * Return: 0 if successful, error code otherwise. */ static int imx335_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state) { struct imx335 *imx335 = to_imx335(sd); struct v4l2_subdev_format fmt = { 0 }; fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; imx335_fill_pad_format(imx335, &supported_mode, &fmt); mutex_lock(&imx335->mutex); __v4l2_ctrl_modify_range(imx335->link_freq_ctrl, 0, __fls(imx335->link_freq_bitmap), ~(imx335->link_freq_bitmap), __ffs(imx335->link_freq_bitmap)); mutex_unlock(&imx335->mutex); return imx335_set_pad_format(sd, sd_state, &fmt); } /** * imx335_get_selection() - Selection API * @sd: pointer to imx335 V4L2 sub-device structure * @sd_state: V4L2 sub-device configuration * @sel: V4L2 selection info * * Return: 0 if successful, error code otherwise. */ static int imx335_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { switch (sel->target) { case V4L2_SEL_TGT_NATIVE_SIZE: sel->r.top = 0; sel->r.left = 0; sel->r.width = IMX335_NATIVE_WIDTH; sel->r.height = IMX335_NATIVE_HEIGHT; return 0; case V4L2_SEL_TGT_CROP: case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.top = IMX335_PIXEL_ARRAY_TOP; sel->r.left = IMX335_PIXEL_ARRAY_LEFT; sel->r.width = IMX335_PIXEL_ARRAY_WIDTH; sel->r.height = IMX335_PIXEL_ARRAY_HEIGHT; return 0; } return -EINVAL; } static int imx335_set_framefmt(struct imx335 *imx335) { switch (imx335->cur_mbus_code) { case MEDIA_BUS_FMT_SRGGB10_1X10: return cci_multi_reg_write(imx335->cci, raw10_framefmt_regs, ARRAY_SIZE(raw10_framefmt_regs), NULL); case MEDIA_BUS_FMT_SRGGB12_1X12: return cci_multi_reg_write(imx335->cci, raw12_framefmt_regs, ARRAY_SIZE(raw12_framefmt_regs), NULL); } return -EINVAL; } /** * imx335_start_streaming() - Start sensor stream * @imx335: pointer to imx335 device * * Return: 0 if successful, error code otherwise. */ static int imx335_start_streaming(struct imx335 *imx335) { const struct imx335_reg_list *reg_list; int ret; /* Setup PLL */ reg_list = &link_freq_reglist[__ffs(imx335->link_freq_bitmap)]; ret = cci_multi_reg_write(imx335->cci, reg_list->regs, reg_list->num_of_regs, NULL); if (ret) { dev_err(imx335->dev, "%s failed to set plls\n", __func__); return ret; } /* Write sensor mode registers */ reg_list = &imx335->cur_mode->reg_list; ret = cci_multi_reg_write(imx335->cci, reg_list->regs, reg_list->num_of_regs, NULL); if (ret) { dev_err(imx335->dev, "fail to write initial registers\n"); return ret; } ret = imx335_set_framefmt(imx335); if (ret) { dev_err(imx335->dev, "%s failed to set frame format: %d\n", __func__, ret); return ret; } /* Configure lanes */ ret = cci_write(imx335->cci, IMX335_REG_LANEMODE, imx335->lane_mode, NULL); if (ret) return ret; /* Setup handler will write actual exposure and gain */ ret = __v4l2_ctrl_handler_setup(imx335->sd.ctrl_handler); if (ret) { dev_err(imx335->dev, "fail to setup handler\n"); return ret; } /* Start streaming */ ret = cci_write(imx335->cci, IMX335_REG_MODE_SELECT, IMX335_MODE_STREAMING, NULL); if (ret) { dev_err(imx335->dev, "fail to start streaming\n"); return ret; } /* Initial regulator stabilization period */ usleep_range(18000, 20000); return 0; } /** * imx335_stop_streaming() - Stop sensor stream * @imx335: pointer to imx335 device * * Return: 0 if successful, error code otherwise. */ static int imx335_stop_streaming(struct imx335 *imx335) { return cci_write(imx335->cci, IMX335_REG_MODE_SELECT, IMX335_MODE_STANDBY, NULL); } /** * imx335_set_stream() - Enable sensor streaming * @sd: pointer to imx335 subdevice * @enable: set to enable sensor streaming * * Return: 0 if successful, error code otherwise. */ static int imx335_set_stream(struct v4l2_subdev *sd, int enable) { struct imx335 *imx335 = to_imx335(sd); int ret; mutex_lock(&imx335->mutex); if (enable) { ret = pm_runtime_resume_and_get(imx335->dev); if (ret) goto error_unlock; ret = imx335_start_streaming(imx335); if (ret) goto error_power_off; } else { imx335_stop_streaming(imx335); pm_runtime_put(imx335->dev); } mutex_unlock(&imx335->mutex); return 0; error_power_off: pm_runtime_put(imx335->dev); error_unlock: mutex_unlock(&imx335->mutex); return ret; } /** * imx335_detect() - Detect imx335 sensor * @imx335: pointer to imx335 device * * Return: 0 if successful, -EIO if sensor id does not match */ static int imx335_detect(struct imx335 *imx335) { int ret; u64 val; ret = cci_read(imx335->cci, IMX335_REG_ID, &val, NULL); if (ret) return ret; if (val != IMX335_ID) { dev_err(imx335->dev, "chip id mismatch: %x!=%llx\n", IMX335_ID, val); return -ENXIO; } return 0; } /** * imx335_parse_hw_config() - Parse HW configuration and check if supported * @imx335: pointer to imx335 device * * Return: 0 if successful, error code otherwise. */ static int imx335_parse_hw_config(struct imx335 *imx335) { struct fwnode_handle *fwnode = dev_fwnode(imx335->dev); struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY }; struct fwnode_handle *ep; unsigned long rate; unsigned int i; int ret; if (!fwnode) return -ENXIO; /* Request optional reset pin */ imx335->reset_gpio = devm_gpiod_get_optional(imx335->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(imx335->reset_gpio)) { dev_err(imx335->dev, "failed to get reset gpio %ld\n", PTR_ERR(imx335->reset_gpio)); return PTR_ERR(imx335->reset_gpio); } for (i = 0; i < ARRAY_SIZE(imx335_supply_name); i++) imx335->supplies[i].supply = imx335_supply_name[i]; ret = devm_regulator_bulk_get(imx335->dev, ARRAY_SIZE(imx335_supply_name), imx335->supplies); if (ret) { dev_err(imx335->dev, "Failed to get regulators\n"); return ret; } /* Get sensor input clock */ imx335->inclk = devm_clk_get(imx335->dev, NULL); if (IS_ERR(imx335->inclk)) { dev_err(imx335->dev, "could not get inclk\n"); return PTR_ERR(imx335->inclk); } rate = clk_get_rate(imx335->inclk); if (rate != IMX335_INCLK_RATE) { dev_err(imx335->dev, "inclk frequency mismatch\n"); return -EINVAL; } ep = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!ep) { dev_err(imx335->dev, "Failed to get next endpoint\n"); return -ENXIO; } ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); fwnode_handle_put(ep); if (ret) return ret; switch (bus_cfg.bus.mipi_csi2.num_data_lanes) { case 2: imx335->lane_mode = IMX335_2LANE; break; case 4: imx335->lane_mode = IMX335_4LANE; break; default: dev_err(imx335->dev, "number of CSI2 data lanes %d is not supported\n", bus_cfg.bus.mipi_csi2.num_data_lanes); ret = -EINVAL; goto done_endpoint_free; } ret = v4l2_link_freq_to_bitmap(imx335->dev, bus_cfg.link_frequencies, bus_cfg.nr_of_link_frequencies, link_freq, ARRAY_SIZE(link_freq), &imx335->link_freq_bitmap); done_endpoint_free: v4l2_fwnode_endpoint_free(&bus_cfg); return ret; } /* V4l2 subdevice ops */ static const struct v4l2_subdev_video_ops imx335_video_ops = { .s_stream = imx335_set_stream, }; static const struct v4l2_subdev_pad_ops imx335_pad_ops = { .enum_mbus_code = imx335_enum_mbus_code, .enum_frame_size = imx335_enum_frame_size, .get_selection = imx335_get_selection, .set_selection = imx335_get_selection, .get_fmt = imx335_get_pad_format, .set_fmt = imx335_set_pad_format, }; static const struct v4l2_subdev_ops imx335_subdev_ops = { .video = &imx335_video_ops, .pad = &imx335_pad_ops, }; static const struct v4l2_subdev_internal_ops imx335_internal_ops = { .init_state = imx335_init_state, }; /** * imx335_power_on() - Sensor power on sequence * @dev: pointer to i2c device * * Return: 0 if successful, error code otherwise. */ static int imx335_power_on(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct imx335 *imx335 = to_imx335(sd); int ret; ret = regulator_bulk_enable(ARRAY_SIZE(imx335_supply_name), imx335->supplies); if (ret) { dev_err(dev, "%s: failed to enable regulators\n", __func__); return ret; } usleep_range(500, 550); /* Tlow */ gpiod_set_value_cansleep(imx335->reset_gpio, 0); ret = clk_prepare_enable(imx335->inclk); if (ret) { dev_err(imx335->dev, "fail to enable inclk\n"); goto error_reset; } usleep_range(20, 22); /* T4 */ return 0; error_reset: gpiod_set_value_cansleep(imx335->reset_gpio, 1); regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies); return ret; } /** * imx335_power_off() - Sensor power off sequence * @dev: pointer to i2c device * * Return: 0 if successful, error code otherwise. */ static int imx335_power_off(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct imx335 *imx335 = to_imx335(sd); gpiod_set_value_cansleep(imx335->reset_gpio, 1); clk_disable_unprepare(imx335->inclk); regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies); return 0; } /** * imx335_init_controls() - Initialize sensor subdevice controls * @imx335: pointer to imx335 device * * Return: 0 if successful, error code otherwise. */ static int imx335_init_controls(struct imx335 *imx335) { struct v4l2_ctrl_handler *ctrl_hdlr = &imx335->ctrl_handler; const struct imx335_mode *mode = imx335->cur_mode; struct v4l2_fwnode_device_properties props; u32 lpfr; int ret; ret = v4l2_fwnode_device_parse(imx335->dev, &props); if (ret) return ret; /* v4l2_fwnode_device_properties can add two more controls */ ret = v4l2_ctrl_handler_init(ctrl_hdlr, 9); if (ret) return ret; /* Serialize controls with sensor device */ ctrl_hdlr->lock = &imx335->mutex; /* Initialize exposure and gain */ lpfr = mode->vblank + mode->height; imx335->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_EXPOSURE, IMX335_EXPOSURE_MIN, lpfr - IMX335_EXPOSURE_OFFSET, IMX335_EXPOSURE_STEP, IMX335_EXPOSURE_DEFAULT); /* * The sensor has an analog gain and a digital gain, both controlled * through a single gain value, expressed in 0.3dB increments. Values * from 0.0dB (0) to 30.0dB (100) apply analog gain only, higher values * up to 72.0dB (240) add further digital gain. Limit the range to * analog gain only, support for digital gain can be added separately * if needed. */ imx335->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, IMX335_AGAIN_MIN, IMX335_AGAIN_MAX, IMX335_AGAIN_STEP, IMX335_AGAIN_DEFAULT); v4l2_ctrl_cluster(2, &imx335->exp_ctrl); imx335->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_VBLANK, mode->vblank_min, mode->vblank_max, 1, mode->vblank); v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(imx335_tpg_menu) - 1, 0, 0, imx335_tpg_menu); /* Read only controls */ imx335->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_PIXEL_RATE, mode->pclk, mode->pclk, 1, mode->pclk); imx335->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_LINK_FREQ, __fls(imx335->link_freq_bitmap), __ffs(imx335->link_freq_bitmap), link_freq); if (imx335->link_freq_ctrl) imx335->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; imx335->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, &imx335_ctrl_ops, V4L2_CID_HBLANK, mode->hblank, mode->hblank, 1, mode->hblank); if (imx335->hblank_ctrl) imx335->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx335_ctrl_ops, &props); if (ctrl_hdlr->error) { dev_err(imx335->dev, "control init failed: %d\n", ctrl_hdlr->error); v4l2_ctrl_handler_free(ctrl_hdlr); return ctrl_hdlr->error; } imx335->sd.ctrl_handler = ctrl_hdlr; return 0; } /** * imx335_probe() - I2C client device binding * @client: pointer to i2c client device * * Return: 0 if successful, error code otherwise. */ static int imx335_probe(struct i2c_client *client) { struct imx335 *imx335; int ret; imx335 = devm_kzalloc(&client->dev, sizeof(*imx335), GFP_KERNEL); if (!imx335) return -ENOMEM; imx335->dev = &client->dev; imx335->cci = devm_cci_regmap_init_i2c(client, 16); if (IS_ERR(imx335->cci)) { dev_err(imx335->dev, "Unable to initialize I2C\n"); return -ENODEV; } /* Initialize subdev */ v4l2_i2c_subdev_init(&imx335->sd, client, &imx335_subdev_ops); imx335->sd.internal_ops = &imx335_internal_ops; ret = imx335_parse_hw_config(imx335); if (ret) { dev_err(imx335->dev, "HW configuration is not supported\n"); return ret; } mutex_init(&imx335->mutex); ret = imx335_power_on(imx335->dev); if (ret) { dev_err(imx335->dev, "failed to power-on the sensor\n"); goto error_mutex_destroy; } /* Check module identity */ ret = imx335_detect(imx335); if (ret) { dev_err(imx335->dev, "failed to find sensor: %d\n", ret); goto error_power_off; } /* Set default mode to max resolution */ imx335->cur_mode = &supported_mode; imx335->cur_mbus_code = imx335_mbus_codes[0]; imx335->vblank = imx335->cur_mode->vblank; ret = imx335_init_controls(imx335); if (ret) { dev_err(imx335->dev, "failed to init controls: %d\n", ret); goto error_power_off; } /* Initialize subdev */ imx335->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; imx335->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; /* Initialize source pad */ imx335->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&imx335->sd.entity, 1, &imx335->pad); if (ret) { dev_err(imx335->dev, "failed to init entity pads: %d\n", ret); goto error_handler_free; } ret = v4l2_async_register_subdev_sensor(&imx335->sd); if (ret < 0) { dev_err(imx335->dev, "failed to register async subdev: %d\n", ret); goto error_media_entity; } pm_runtime_set_active(imx335->dev); pm_runtime_enable(imx335->dev); pm_runtime_idle(imx335->dev); return 0; error_media_entity: media_entity_cleanup(&imx335->sd.entity); error_handler_free: v4l2_ctrl_handler_free(imx335->sd.ctrl_handler); error_power_off: imx335_power_off(imx335->dev); error_mutex_destroy: mutex_destroy(&imx335->mutex); return ret; } /** * imx335_remove() - I2C client device unbinding * @client: pointer to I2C client device * * Return: 0 if successful, error code otherwise. */ static void imx335_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct imx335 *imx335 = to_imx335(sd); v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_ctrl_handler_free(sd->ctrl_handler); pm_runtime_disable(&client->dev); if (!pm_runtime_status_suspended(&client->dev)) imx335_power_off(&client->dev); pm_runtime_set_suspended(&client->dev); mutex_destroy(&imx335->mutex); } static const struct dev_pm_ops imx335_pm_ops = { SET_RUNTIME_PM_OPS(imx335_power_off, imx335_power_on, NULL) }; static const struct of_device_id imx335_of_match[] = { { .compatible = "sony,imx335" }, { } }; MODULE_DEVICE_TABLE(of, imx335_of_match); static struct i2c_driver imx335_driver = { .probe = imx335_probe, .remove = imx335_remove, .driver = { .name = "imx335", .pm = &imx335_pm_ops, .of_match_table = imx335_of_match, }, }; module_i2c_driver(imx335_driver); MODULE_DESCRIPTION("Sony imx335 sensor driver"); MODULE_LICENSE("GPL");