diff options
Diffstat (limited to 'drivers/media/i2c/imx412.c')
| -rw-r--r-- | drivers/media/i2c/imx412.c | 1120 |
1 files changed, 1120 insertions, 0 deletions
diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c new file mode 100644 index 000000000..d2760e9e6 --- /dev/null +++ b/drivers/media/i2c/imx412.c @@ -0,0 +1,1120 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Sony imx412 Camera Sensor Driver + * + * Copyright (C) 2021 Intel Corporation + */ +#include <linux/unaligned.h> + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> + +#include <media/v4l2-cci.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-subdev.h> + +/* Streaming Mode */ +#define IMX412_REG_MODE_SELECT CCI_REG8(0x0100) +#define IMX412_MODE_STANDBY 0x00 +#define IMX412_MODE_STREAMING 0x01 + +/* Lines per frame */ +#define IMX412_REG_LPFR CCI_REG16(0x0340) + +/* Chip ID */ +#define IMX412_REG_ID CCI_REG16(0x0016) +#define IMX412_ID 0x577 + +/* Exposure control */ +#define IMX412_REG_EXPOSURE_CIT CCI_REG16(0x0202) +#define IMX412_EXPOSURE_MIN 8 +#define IMX412_EXPOSURE_OFFSET 22 +#define IMX412_EXPOSURE_STEP 1 +#define IMX412_EXPOSURE_DEFAULT 0x0648 + +/* Analog gain control */ +#define IMX412_REG_AGAIN CCI_REG16(0x0204) +#define IMX412_AGAIN_MIN 0 +#define IMX412_AGAIN_MAX 978 +#define IMX412_AGAIN_STEP 1 +#define IMX412_AGAIN_DEFAULT 0 + +/* Group hold register */ +#define IMX412_REG_HOLD CCI_REG8(0x0104) + +/* Input clock rate */ +#define IMX412_INCLK_RATE 24000000 + +/* CSI2 HW configuration */ +#define IMX412_LINK_FREQ 600000000 +#define IMX412_NUM_DATA_LANES 4 + +#define IMX412_REG_MIN 0x00 +#define IMX412_REG_MAX 0xffff + +/** + * struct imx412_reg_list - imx412 sensor register list + * @num_of_regs: Number of registers in the list + * @regs: Pointer to register list + */ +struct imx412_reg_list { + u32 num_of_regs; + const struct cci_reg_sequence *regs; +}; + +/** + * struct imx412_mode - imx412 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 + * @link_freq_idx: Link frequency index + * @reg_list: Register list for sensor mode + */ +struct imx412_mode { + u32 width; + u32 height; + u32 code; + u32 hblank; + u32 vblank; + u32 vblank_min; + u32 vblank_max; + u64 pclk; + u32 link_freq_idx; + struct imx412_reg_list reg_list; +}; + +static const char * const imx412_supply_names[] = { + "dovdd", /* Digital I/O power */ + "avdd", /* Analog power */ + "dvdd", /* Digital core power */ +}; + +/** + * struct imx412 - imx412 sensor device structure + * @dev: Pointer to generic device + * @cci: CCI register map + * @client: Pointer to i2c client + * @sd: V4L2 sub-device + * @pad: Media pad. Only one pad supported + * @reset_gpio: Sensor reset gpio + * @inclk: Sensor input clock + * @supplies: Regulator supplies + * @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 + * @cur_mode: Pointer to current selected sensor mode + */ +struct imx412 { + struct device *dev; + struct regmap *cci; + struct i2c_client *client; + struct v4l2_subdev sd; + struct media_pad pad; + struct gpio_desc *reset_gpio; + struct clk *inclk; + struct regulator_bulk_data supplies[ARRAY_SIZE(imx412_supply_names)]; + 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; + const struct imx412_mode *cur_mode; +}; + +static const s64 link_freq[] = { + IMX412_LINK_FREQ, +}; + +/* Sensor mode registers */ +static const struct cci_reg_sequence mode_4056x3040_regs[] = { + { CCI_REG8(0x0136), 0x18 }, + { CCI_REG8(0x0137), 0x00 }, + { CCI_REG8(0x3c7e), 0x08 }, + { CCI_REG8(0x3c7f), 0x02 }, + { CCI_REG8(0x38a8), 0x1f }, + { CCI_REG8(0x38a9), 0xff }, + { CCI_REG8(0x38aa), 0x1f }, + { CCI_REG8(0x38ab), 0xff }, + { CCI_REG8(0x55d4), 0x00 }, + { CCI_REG8(0x55d5), 0x00 }, + { CCI_REG8(0x55d6), 0x07 }, + { CCI_REG8(0x55d7), 0xff }, + { CCI_REG8(0x55e8), 0x07 }, + { CCI_REG8(0x55e9), 0xff }, + { CCI_REG8(0x55ea), 0x00 }, + { CCI_REG8(0x55eb), 0x00 }, + { CCI_REG8(0x575c), 0x07 }, + { CCI_REG8(0x575d), 0xff }, + { CCI_REG8(0x575e), 0x00 }, + { CCI_REG8(0x575f), 0x00 }, + { CCI_REG8(0x5764), 0x00 }, + { CCI_REG8(0x5765), 0x00 }, + { CCI_REG8(0x5766), 0x07 }, + { CCI_REG8(0x5767), 0xff }, + { CCI_REG8(0x5974), 0x04 }, + { CCI_REG8(0x5975), 0x01 }, + { CCI_REG8(0x5f10), 0x09 }, + { CCI_REG8(0x5f11), 0x92 }, + { CCI_REG8(0x5f12), 0x32 }, + { CCI_REG8(0x5f13), 0x72 }, + { CCI_REG8(0x5f14), 0x16 }, + { CCI_REG8(0x5f15), 0xba }, + { CCI_REG8(0x5f17), 0x13 }, + { CCI_REG8(0x5f18), 0x24 }, + { CCI_REG8(0x5f19), 0x60 }, + { CCI_REG8(0x5f1a), 0xe3 }, + { CCI_REG8(0x5f1b), 0xad }, + { CCI_REG8(0x5f1c), 0x74 }, + { CCI_REG8(0x5f2d), 0x25 }, + { CCI_REG8(0x5f5c), 0xd0 }, + { CCI_REG8(0x6a22), 0x00 }, + { CCI_REG8(0x6a23), 0x1d }, + { CCI_REG8(0x7ba8), 0x00 }, + { CCI_REG8(0x7ba9), 0x00 }, + { CCI_REG8(0x886b), 0x00 }, + { CCI_REG8(0x9002), 0x0a }, + { CCI_REG8(0x9004), 0x1a }, + { CCI_REG8(0x9214), 0x93 }, + { CCI_REG8(0x9215), 0x69 }, + { CCI_REG8(0x9216), 0x93 }, + { CCI_REG8(0x9217), 0x6b }, + { CCI_REG8(0x9218), 0x93 }, + { CCI_REG8(0x9219), 0x6d }, + { CCI_REG8(0x921a), 0x57 }, + { CCI_REG8(0x921b), 0x58 }, + { CCI_REG8(0x921c), 0x57 }, + { CCI_REG8(0x921d), 0x59 }, + { CCI_REG8(0x921e), 0x57 }, + { CCI_REG8(0x921f), 0x5a }, + { CCI_REG8(0x9220), 0x57 }, + { CCI_REG8(0x9221), 0x5b }, + { CCI_REG8(0x9222), 0x93 }, + { CCI_REG8(0x9223), 0x02 }, + { CCI_REG8(0x9224), 0x93 }, + { CCI_REG8(0x9225), 0x03 }, + { CCI_REG8(0x9226), 0x93 }, + { CCI_REG8(0x9227), 0x04 }, + { CCI_REG8(0x9228), 0x93 }, + { CCI_REG8(0x9229), 0x05 }, + { CCI_REG8(0x922a), 0x98 }, + { CCI_REG8(0x922b), 0x21 }, + { CCI_REG8(0x922c), 0xb2 }, + { CCI_REG8(0x922d), 0xdb }, + { CCI_REG8(0x922e), 0xb2 }, + { CCI_REG8(0x922f), 0xdc }, + { CCI_REG8(0x9230), 0xb2 }, + { CCI_REG8(0x9231), 0xdd }, + { CCI_REG8(0x9232), 0xe2 }, + { CCI_REG8(0x9233), 0xe1 }, + { CCI_REG8(0x9234), 0xb2 }, + { CCI_REG8(0x9235), 0xe2 }, + { CCI_REG8(0x9236), 0xb2 }, + { CCI_REG8(0x9237), 0xe3 }, + { CCI_REG8(0x9238), 0xb7 }, + { CCI_REG8(0x9239), 0xb9 }, + { CCI_REG8(0x923a), 0xb7 }, + { CCI_REG8(0x923b), 0xbb }, + { CCI_REG8(0x923c), 0xb7 }, + { CCI_REG8(0x923d), 0xbc }, + { CCI_REG8(0x923e), 0xb7 }, + { CCI_REG8(0x923f), 0xc5 }, + { CCI_REG8(0x9240), 0xb7 }, + { CCI_REG8(0x9241), 0xc7 }, + { CCI_REG8(0x9242), 0xb7 }, + { CCI_REG8(0x9243), 0xc9 }, + { CCI_REG8(0x9244), 0x98 }, + { CCI_REG8(0x9245), 0x56 }, + { CCI_REG8(0x9246), 0x98 }, + { CCI_REG8(0x9247), 0x55 }, + { CCI_REG8(0x9380), 0x00 }, + { CCI_REG8(0x9381), 0x62 }, + { CCI_REG8(0x9382), 0x00 }, + { CCI_REG8(0x9383), 0x56 }, + { CCI_REG8(0x9384), 0x00 }, + { CCI_REG8(0x9385), 0x52 }, + { CCI_REG8(0x9388), 0x00 }, + { CCI_REG8(0x9389), 0x55 }, + { CCI_REG8(0x938a), 0x00 }, + { CCI_REG8(0x938b), 0x55 }, + { CCI_REG8(0x938c), 0x00 }, + { CCI_REG8(0x938d), 0x41 }, + { CCI_REG8(0x5078), 0x01 }, + { CCI_REG8(0x0112), 0x0a }, + { CCI_REG8(0x0113), 0x0a }, + { CCI_REG8(0x0114), 0x03 }, + { CCI_REG8(0x0342), 0x11 }, + { CCI_REG8(0x0343), 0xa0 }, + { CCI_REG8(0x0340), 0x0d }, + { CCI_REG8(0x0341), 0xda }, + { CCI_REG8(0x3210), 0x00 }, + { CCI_REG8(0x0344), 0x00 }, + { CCI_REG8(0x0345), 0x00 }, + { CCI_REG8(0x0346), 0x00 }, + { CCI_REG8(0x0347), 0x00 }, + { CCI_REG8(0x0348), 0x0f }, + { CCI_REG8(0x0349), 0xd7 }, + { CCI_REG8(0x034a), 0x0b }, + { CCI_REG8(0x034b), 0xdf }, + { CCI_REG8(0x00e3), 0x00 }, + { CCI_REG8(0x00e4), 0x00 }, + { CCI_REG8(0x00e5), 0x01 }, + { CCI_REG8(0x00fc), 0x0a }, + { CCI_REG8(0x00fd), 0x0a }, + { CCI_REG8(0x00fe), 0x0a }, + { CCI_REG8(0x00ff), 0x0a }, + { CCI_REG8(0xe013), 0x00 }, + { CCI_REG8(0x0220), 0x00 }, + { CCI_REG8(0x0221), 0x11 }, + { CCI_REG8(0x0381), 0x01 }, + { CCI_REG8(0x0383), 0x01 }, + { CCI_REG8(0x0385), 0x01 }, + { CCI_REG8(0x0387), 0x01 }, + { CCI_REG8(0x0900), 0x00 }, + { CCI_REG8(0x0901), 0x11 }, + { CCI_REG8(0x0902), 0x00 }, + { CCI_REG8(0x3140), 0x02 }, + { CCI_REG8(0x3241), 0x11 }, + { CCI_REG8(0x3250), 0x03 }, + { CCI_REG8(0x3e10), 0x00 }, + { CCI_REG8(0x3e11), 0x00 }, + { CCI_REG8(0x3f0d), 0x00 }, + { CCI_REG8(0x3f42), 0x00 }, + { CCI_REG8(0x3f43), 0x00 }, + { CCI_REG8(0x0401), 0x00 }, + { CCI_REG8(0x0404), 0x00 }, + { CCI_REG8(0x0405), 0x10 }, + { CCI_REG8(0x0408), 0x00 }, + { CCI_REG8(0x0409), 0x00 }, + { CCI_REG8(0x040a), 0x00 }, + { CCI_REG8(0x040b), 0x00 }, + { CCI_REG8(0x040c), 0x0f }, + { CCI_REG8(0x040d), 0xd8 }, + { CCI_REG8(0x040e), 0x0b }, + { CCI_REG8(0x040f), 0xe0 }, + { CCI_REG8(0x034c), 0x0f }, + { CCI_REG8(0x034d), 0xd8 }, + { CCI_REG8(0x034e), 0x0b }, + { CCI_REG8(0x034f), 0xe0 }, + { CCI_REG8(0x0301), 0x05 }, + { CCI_REG8(0x0303), 0x02 }, + { CCI_REG8(0x0305), 0x04 }, + { CCI_REG8(0x0306), 0x00 }, + { CCI_REG8(0x0307), 0xc8 }, + { CCI_REG8(0x0309), 0x0a }, + { CCI_REG8(0x030b), 0x01 }, + { CCI_REG8(0x030d), 0x02 }, + { CCI_REG8(0x030e), 0x01 }, + { CCI_REG8(0x030f), 0x5e }, + { CCI_REG8(0x0310), 0x00 }, + { CCI_REG8(0x0820), 0x12 }, + { CCI_REG8(0x0821), 0xc0 }, + { CCI_REG8(0x0822), 0x00 }, + { CCI_REG8(0x0823), 0x00 }, + { CCI_REG8(0x3e20), 0x01 }, + { CCI_REG8(0x3e37), 0x00 }, + { CCI_REG8(0x3f50), 0x00 }, + { CCI_REG8(0x3f56), 0x00 }, + { CCI_REG8(0x3f57), 0xe2 }, + { CCI_REG8(0x3c0a), 0x5a }, + { CCI_REG8(0x3c0b), 0x55 }, + { CCI_REG8(0x3c0c), 0x28 }, + { CCI_REG8(0x3c0d), 0x07 }, + { CCI_REG8(0x3c0e), 0xff }, + { CCI_REG8(0x3c0f), 0x00 }, + { CCI_REG8(0x3c10), 0x00 }, + { CCI_REG8(0x3c11), 0x02 }, + { CCI_REG8(0x3c12), 0x00 }, + { CCI_REG8(0x3c13), 0x03 }, + { CCI_REG8(0x3c14), 0x00 }, + { CCI_REG8(0x3c15), 0x00 }, + { CCI_REG8(0x3c16), 0x0c }, + { CCI_REG8(0x3c17), 0x0c }, + { CCI_REG8(0x3c18), 0x0c }, + { CCI_REG8(0x3c19), 0x0a }, + { CCI_REG8(0x3c1a), 0x0a }, + { CCI_REG8(0x3c1b), 0x0a }, + { CCI_REG8(0x3c1c), 0x00 }, + { CCI_REG8(0x3c1d), 0x00 }, + { CCI_REG8(0x3c1e), 0x00 }, + { CCI_REG8(0x3c1f), 0x00 }, + { CCI_REG8(0x3c20), 0x00 }, + { CCI_REG8(0x3c21), 0x00 }, + { CCI_REG8(0x3c22), 0x3f }, + { CCI_REG8(0x3c23), 0x0a }, + { CCI_REG8(0x3e35), 0x01 }, + { CCI_REG8(0x3f4a), 0x03 }, + { CCI_REG8(0x3f4b), 0xbf }, + { CCI_REG8(0x3f26), 0x00 }, + { CCI_REG8(0x0202), 0x0d }, + { CCI_REG8(0x0203), 0xc4 }, + { CCI_REG8(0x0204), 0x00 }, + { CCI_REG8(0x0205), 0x00 }, + { CCI_REG8(0x020e), 0x01 }, + { CCI_REG8(0x020f), 0x00 }, + { CCI_REG8(0x0210), 0x01 }, + { CCI_REG8(0x0211), 0x00 }, + { CCI_REG8(0x0212), 0x01 }, + { CCI_REG8(0x0213), 0x00 }, + { CCI_REG8(0x0214), 0x01 }, + { CCI_REG8(0x0215), 0x00 }, + { CCI_REG8(0xbcf1), 0x00 }, +}; + +/* Supported sensor mode configurations */ +static const struct imx412_mode supported_mode = { + .width = 4056, + .height = 3040, + .hblank = 456, + .vblank = 506, + .vblank_min = 506, + .vblank_max = 32420, + .pclk = 480000000, + .link_freq_idx = 0, + .code = MEDIA_BUS_FMT_SRGGB10_1X10, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mode_4056x3040_regs), + .regs = mode_4056x3040_regs, + }, +}; + +/** + * to_imx412() - imx412 V4L2 sub-device to imx412 device. + * @subdev: pointer to imx412 V4L2 sub-device + * + * Return: pointer to imx412 device + */ +static inline struct imx412 *to_imx412(struct v4l2_subdev *subdev) +{ + return container_of(subdev, struct imx412, sd); +} + +/** + * imx412_update_controls() - Update control ranges based on streaming mode + * @imx412: pointer to imx412 device + * @mode: pointer to imx412_mode sensor mode + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_update_controls(struct imx412 *imx412, + const struct imx412_mode *mode) +{ + int ret; + + ret = __v4l2_ctrl_s_ctrl(imx412->link_freq_ctrl, mode->link_freq_idx); + if (ret) + return ret; + + ret = __v4l2_ctrl_s_ctrl(imx412->hblank_ctrl, mode->hblank); + if (ret) + return ret; + + return __v4l2_ctrl_modify_range(imx412->vblank_ctrl, mode->vblank_min, + mode->vblank_max, 1, mode->vblank); +} + +/** + * imx412_update_exp_gain() - Set updated exposure and gain + * @imx412: pointer to imx412 device + * @exposure: updated exposure value + * @gain: updated analog gain value + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_update_exp_gain(struct imx412 *imx412, u32 exposure, u32 gain) +{ + u32 lpfr; + int ret = 0; + int ret_hold; + + lpfr = imx412->vblank + imx412->cur_mode->height; + + dev_dbg(imx412->dev, "Set exp %u, analog gain %u, lpfr %u\n", + exposure, gain, lpfr); + + cci_write(imx412->cci, IMX412_REG_HOLD, 1, &ret); + + cci_write(imx412->cci, IMX412_REG_LPFR, lpfr, &ret); + + cci_write(imx412->cci, IMX412_REG_EXPOSURE_CIT, exposure, &ret); + + cci_write(imx412->cci, IMX412_REG_AGAIN, gain, &ret); + + ret_hold = cci_write(imx412->cci, IMX412_REG_HOLD, 0, NULL); + if (ret_hold) + return ret_hold; + + return ret; +} + +static int imx412_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx412 *imx412 = + container_of(ctrl->handler, struct imx412, ctrl_handler); + u32 analog_gain; + u32 exposure; + int ret; + + switch (ctrl->id) { + case V4L2_CID_VBLANK: + imx412->vblank = imx412->vblank_ctrl->val; + + dev_dbg(imx412->dev, "Received vblank %u, new lpfr %u\n", + imx412->vblank, + imx412->vblank + imx412->cur_mode->height); + + ret = __v4l2_ctrl_modify_range(imx412->exp_ctrl, + IMX412_EXPOSURE_MIN, + imx412->vblank + + imx412->cur_mode->height - + IMX412_EXPOSURE_OFFSET, + 1, IMX412_EXPOSURE_DEFAULT); + break; + case V4L2_CID_EXPOSURE: + /* Set controls only if sensor is in power on state */ + if (!pm_runtime_get_if_in_use(imx412->dev)) + return 0; + + exposure = ctrl->val; + analog_gain = imx412->again_ctrl->val; + + dev_dbg(imx412->dev, "Received exp %u, analog gain %u\n", + exposure, analog_gain); + + ret = imx412_update_exp_gain(imx412, exposure, analog_gain); + + pm_runtime_put(imx412->dev); + + break; + default: + dev_err(imx412->dev, "Invalid control %d\n", ctrl->id); + ret = -EINVAL; + } + + return ret; +} + +/* V4l2 subdevice control ops*/ +static const struct v4l2_ctrl_ops imx412_ctrl_ops = { + .s_ctrl = imx412_set_ctrl, +}; + +static int imx412_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 = supported_mode.code; + + return 0; +} + +static int imx412_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fsize) +{ + if (fsize->index > 0) + return -EINVAL; + + if (fsize->code != supported_mode.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; +} + +/** + * imx412_fill_pad_format() - Fill subdevice pad format + * from selected sensor mode + * @imx412: pointer to imx412 device + * @mode: pointer to imx412_mode sensor mode + * @fmt: V4L2 sub-device format need to be filled + */ +static void imx412_fill_pad_format(struct imx412 *imx412, + const struct imx412_mode *mode, + struct v4l2_subdev_format *fmt) +{ + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.code = mode->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; +} + +static int imx412_get_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imx412 *imx412 = to_imx412(sd); + + 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 { + imx412_fill_pad_format(imx412, imx412->cur_mode, fmt); + } + + return 0; +} + +static int imx412_set_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imx412 *imx412 = to_imx412(sd); + const struct imx412_mode *mode; + int ret = 0; + + mode = &supported_mode; + imx412_fill_pad_format(imx412, 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 = imx412_update_controls(imx412, mode); + if (!ret) + imx412->cur_mode = mode; + } + + return ret; +} + +static int imx412_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + struct imx412 *imx412 = to_imx412(sd); + struct v4l2_subdev_format fmt = { 0 }; + + fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + imx412_fill_pad_format(imx412, &supported_mode, &fmt); + + return imx412_set_pad_format(sd, sd_state, &fmt); +} + +/** + * imx412_enable_streams() - Enable specified streams for the sensor + * @sd: pointer to the V4L2 subdevice + * @state: pointer to the subdevice state + * @pad: pad number for which streams are enabled + * @streams_mask: bitmask specifying the streams to enable + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_enable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + const struct imx412_reg_list *reg_list; + struct imx412 *imx412 = to_imx412(sd); + int ret; + + ret = pm_runtime_resume_and_get(imx412->dev); + if (ret < 0) + return ret; + + /* Write sensor mode registers */ + reg_list = &imx412->cur_mode->reg_list; + ret = cci_multi_reg_write(imx412->cci, reg_list->regs, + reg_list->num_of_regs, NULL); + if (ret) { + dev_err(imx412->dev, "fail to write initial registers\n"); + goto err_rpm_put; + } + + /* Setup handler will write actual exposure and gain */ + ret = __v4l2_ctrl_handler_setup(imx412->sd.ctrl_handler); + if (ret) { + dev_err(imx412->dev, "fail to setup handler\n"); + goto err_rpm_put; + } + + /* Delay is required before streaming*/ + usleep_range(7400, 8000); + + /* Start streaming */ + ret = cci_write(imx412->cci, IMX412_REG_MODE_SELECT, + IMX412_MODE_STREAMING, NULL); + if (ret) { + dev_err(imx412->dev, "fail to start streaming\n"); + goto err_rpm_put; + } + + return 0; + +err_rpm_put: + pm_runtime_put(imx412->dev); + + return ret; +} + +/** + * imx412_disable_streams() - Enable specified streams for the sensor + * @sd: pointer to the V4L2 subdevice + * @state: pointer to the subdevice state + * @pad: pad number for which streams are disabled + * @streams_mask: bitmask specifying the streams to disable + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_disable_streams(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + u32 pad, u64 streams_mask) +{ + struct imx412 *imx412 = to_imx412(sd); + int ret; + + ret = cci_write(imx412->cci, IMX412_REG_MODE_SELECT, + IMX412_MODE_STANDBY, NULL); + + if (ret) + dev_err(imx412->dev, "failed to set stream off\n"); + + pm_runtime_put(imx412->dev); + + return 0; +} + +/** + * imx412_detect() - Detect imx412 sensor + * @imx412: pointer to imx412 device + * + * Return: 0 if successful, -EIO if sensor id does not match + */ +static int imx412_detect(struct imx412 *imx412) +{ + int ret; + u64 val; + + ret = cci_read(imx412->cci, IMX412_REG_ID, &val, NULL); + if (ret) + return dev_err_probe(imx412->dev, ret, + "failed to read chip id %x\n", + IMX412_ID); + + if (val != IMX412_ID) { + return dev_err_probe(imx412->dev, -ENODEV, + "chip id mismatch: %x!=%llx", + IMX412_ID, val); + } + + return 0; +} + +/** + * imx412_parse_hw_config() - Parse HW configuration and check if supported + * @imx412: pointer to imx412 device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_parse_hw_config(struct imx412 *imx412) +{ + struct fwnode_handle *fwnode = dev_fwnode(imx412->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 */ + imx412->reset_gpio = devm_gpiod_get_optional(imx412->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(imx412->reset_gpio)) { + dev_err(imx412->dev, "failed to get reset gpio %pe\n", + imx412->reset_gpio); + return PTR_ERR(imx412->reset_gpio); + } + + /* Get sensor input clock */ + imx412->inclk = devm_v4l2_sensor_clk_get(imx412->dev, NULL); + if (IS_ERR(imx412->inclk)) + return dev_err_probe(imx412->dev, PTR_ERR(imx412->inclk), + "could not get inclk\n"); + + rate = clk_get_rate(imx412->inclk); + if (rate != IMX412_INCLK_RATE) { + dev_err(imx412->dev, "inclk frequency mismatch\n"); + return -EINVAL; + } + + /* Get optional DT defined regulators */ + for (i = 0; i < ARRAY_SIZE(imx412_supply_names); i++) + imx412->supplies[i].supply = imx412_supply_names[i]; + + ret = devm_regulator_bulk_get(imx412->dev, + ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + if (ret) + return ret; + + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!ep) + return -ENXIO; + + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + fwnode_handle_put(ep); + if (ret) + return ret; + + if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX412_NUM_DATA_LANES) { + dev_err(imx412->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; + } + + if (!bus_cfg.nr_of_link_frequencies) { + dev_err(imx412->dev, "no link frequencies defined\n"); + ret = -EINVAL; + goto done_endpoint_free; + } + + for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) + if (bus_cfg.link_frequencies[i] == IMX412_LINK_FREQ) + goto done_endpoint_free; + + ret = -EINVAL; + +done_endpoint_free: + v4l2_fwnode_endpoint_free(&bus_cfg); + + return ret; +} + +/* V4l2 subdevice ops */ +static const struct v4l2_subdev_video_ops imx412_video_ops = { + .s_stream = v4l2_subdev_s_stream_helper, +}; + +static const struct v4l2_subdev_pad_ops imx412_pad_ops = { + .enum_mbus_code = imx412_enum_mbus_code, + .enum_frame_size = imx412_enum_frame_size, + .get_fmt = imx412_get_pad_format, + .set_fmt = imx412_set_pad_format, + .enable_streams = imx412_enable_streams, + .disable_streams = imx412_disable_streams, +}; + +static const struct v4l2_subdev_ops imx412_subdev_ops = { + .video = &imx412_video_ops, + .pad = &imx412_pad_ops, +}; + +static const struct v4l2_subdev_internal_ops imx412_internal_ops = { + .init_state = imx412_init_state, +}; + +static int imx412_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx412 *imx412 = to_imx412(sd); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + if (ret < 0) { + dev_err(dev, "failed to enable regulators\n"); + return ret; + } + + gpiod_set_value_cansleep(imx412->reset_gpio, 0); + + ret = clk_prepare_enable(imx412->inclk); + if (ret) { + dev_err(imx412->dev, "fail to enable inclk\n"); + goto error_reset; + } + + /* + * Certain Arducam IMX577 module variants require a longer reset settle + * time. Increasing the delay from 1ms to 10ms ensures reliable startup. + */ + usleep_range(10000, 12000); + + return 0; + +error_reset: + gpiod_set_value_cansleep(imx412->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + + return ret; +} + +static int imx412_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx412 *imx412 = to_imx412(sd); + + clk_disable_unprepare(imx412->inclk); + + gpiod_set_value_cansleep(imx412->reset_gpio, 1); + + regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + + return 0; +} + +/** + * imx412_init_controls() - Initialize sensor subdevice controls + * @imx412: pointer to imx412 device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_init_controls(struct imx412 *imx412) +{ + struct v4l2_ctrl_handler *ctrl_hdlr = &imx412->ctrl_handler; + const struct imx412_mode *mode = imx412->cur_mode; + u32 lpfr; + int ret; + + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6); + if (ret) + return ret; + + /* Initialize exposure and gain */ + lpfr = mode->vblank + mode->height; + imx412->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_EXPOSURE, + IMX412_EXPOSURE_MIN, + lpfr - IMX412_EXPOSURE_OFFSET, + IMX412_EXPOSURE_STEP, + IMX412_EXPOSURE_DEFAULT); + + imx412->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, + IMX412_AGAIN_MIN, + IMX412_AGAIN_MAX, + IMX412_AGAIN_STEP, + IMX412_AGAIN_DEFAULT); + + v4l2_ctrl_cluster(2, &imx412->exp_ctrl); + + imx412->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_VBLANK, + mode->vblank_min, + mode->vblank_max, + 1, mode->vblank); + + /* Read only controls */ + imx412->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_PIXEL_RATE, + mode->pclk, mode->pclk, + 1, mode->pclk); + + imx412->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq) - + 1, + mode->link_freq_idx, + link_freq); + if (imx412->link_freq_ctrl) + imx412->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + imx412->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &imx412_ctrl_ops, + V4L2_CID_HBLANK, + IMX412_REG_MIN, + IMX412_REG_MAX, + 1, mode->hblank); + if (imx412->hblank_ctrl) + imx412->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + if (ctrl_hdlr->error) { + dev_err(imx412->dev, "control init failed: %d\n", + ctrl_hdlr->error); + v4l2_ctrl_handler_free(ctrl_hdlr); + return ctrl_hdlr->error; + } + + imx412->sd.ctrl_handler = ctrl_hdlr; + + return 0; +} + +static int imx412_probe(struct i2c_client *client) +{ + struct imx412 *imx412; + const char *name; + int ret; + + imx412 = devm_kzalloc(&client->dev, sizeof(*imx412), GFP_KERNEL); + if (!imx412) + return -ENOMEM; + + imx412->dev = &client->dev; + name = device_get_match_data(&client->dev); + if (!name) + return -ENODEV; + + imx412->cci = devm_cci_regmap_init_i2c(client, 16); + if (IS_ERR(imx412->cci)) + return dev_err_probe(imx412->dev, PTR_ERR(imx412->cci), + "Failed to init CCI\n"); + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&imx412->sd, client, &imx412_subdev_ops); + imx412->sd.internal_ops = &imx412_internal_ops; + + ret = imx412_parse_hw_config(imx412); + if (ret) { + dev_err(imx412->dev, "HW configuration is not supported\n"); + return ret; + } + + ret = imx412_power_on(imx412->dev); + if (ret) + return dev_err_probe(imx412->dev, ret, + "failed to power-on the sensor\n"); + + /* Check module identity */ + ret = imx412_detect(imx412); + if (ret) { + dev_err(imx412->dev, "failed to find sensor: %d\n", ret); + goto error_power_off; + } + + /* Set default mode to max resolution */ + imx412->cur_mode = &supported_mode; + imx412->vblank = imx412->cur_mode->vblank; + + ret = imx412_init_controls(imx412); + if (ret) { + dev_err(imx412->dev, "failed to init controls: %d\n", ret); + goto error_power_off; + } + + /* Initialize subdev */ + imx412->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + imx412->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + v4l2_i2c_subdev_set_name(&imx412->sd, client, name, NULL); + + /* Initialize source pad */ + imx412->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&imx412->sd.entity, 1, &imx412->pad); + if (ret) { + dev_err(imx412->dev, "failed to init entity pads: %d\n", ret); + goto error_handler_free; + } + + imx412->sd.state_lock = imx412->ctrl_handler.lock; + ret = v4l2_subdev_init_finalize(&imx412->sd); + if (ret < 0) { + dev_err_probe(imx412->dev, ret, "subdev init error\n"); + goto error_media_entity; + } + + pm_runtime_set_active(imx412->dev); + pm_runtime_enable(imx412->dev); + + ret = v4l2_async_register_subdev_sensor(&imx412->sd); + if (ret < 0) { + dev_err_probe(imx412->dev, ret, + "failed to register sub-device\n"); + goto error_subdev_cleanup; + } + + pm_runtime_idle(imx412->dev); + + return 0; + +error_subdev_cleanup: + v4l2_subdev_cleanup(&imx412->sd); + pm_runtime_disable(imx412->dev); + pm_runtime_set_suspended(imx412->dev); +error_media_entity: + media_entity_cleanup(&imx412->sd.entity); +error_handler_free: + v4l2_ctrl_handler_free(imx412->sd.ctrl_handler); +error_power_off: + imx412_power_off(imx412->dev); + + return ret; +} + +static void imx412_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_async_unregister_subdev(sd); + v4l2_subdev_cleanup(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)) + imx412_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); +} + +static const struct dev_pm_ops imx412_pm_ops = { + SET_RUNTIME_PM_OPS(imx412_power_off, imx412_power_on, NULL) +}; + +static const struct of_device_id imx412_of_match[] = { + { .compatible = "sony,imx412", .data = "imx412" }, + { .compatible = "sony,imx577", .data = "imx577" }, + { } +}; + +MODULE_DEVICE_TABLE(of, imx412_of_match); + +static struct i2c_driver imx412_driver = { + .probe = imx412_probe, + .remove = imx412_remove, + .driver = { + .name = "imx412", + .pm = &imx412_pm_ops, + .of_match_table = imx412_of_match, + }, +}; + +module_i2c_driver(imx412_driver); + +MODULE_DESCRIPTION("Sony imx412 sensor driver"); +MODULE_LICENSE("GPL"); |