From 932741d451a57819af4e316f9818ff363ac1f02a Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:40 +0200 Subject: media: dt-bindings: media: Add bindings for imx335 - Add dt-bindings documentation for Sony imx335 sensor driver - Add MAINTAINERS entry for Sony imx335 binding documentation Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Reviewed-by: Rob Herring Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index a61f4f3b78a9..33ead0495177 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17276,6 +17276,14 @@ T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/i2c/sony,imx334.yaml F: drivers/media/i2c/imx334.c +SONY IMX335 SENSOR DRIVER +M: Paul J. Murphy +M: Daniele Alessandrelli +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/sony,imx335.yaml + SONY IMX355 SENSOR DRIVER M: Tianshu Qiu L: linux-media@vger.kernel.org -- cgit v1.2.3 From 45d19b5fb9aeab4d0c8aa20ad8f67205b3bea752 Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:41 +0200 Subject: media: i2c: Add imx335 camera sensor driver Add a v4l2 sub-device driver for the Sony imx335 image sensor. ThE camera sensor uses the i2c bus for control and the csi-2 bus for data. The following features are supported: - manual exposure and analog gain control support - vblank/hblank/pixel rate/link freq control support - supported resolution: - 2592x1940 @ 30fps - supported bayer order output: - SRGGB12 [Sakari Ailus: Rebase on commit c802a4174beeb25cb539c806c9d0d3c0f61dfa53.] Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- MAINTAINERS | 1 + drivers/media/i2c/Kconfig | 14 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/imx335.c | 1129 ++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1145 insertions(+) create mode 100644 drivers/media/i2c/imx335.c (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index 33ead0495177..9c0e728771fc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17283,6 +17283,7 @@ L: linux-media@vger.kernel.org S: Maintained T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/i2c/sony,imx335.yaml +F: drivers/media/i2c/imx335.c SONY IMX355 SENSOR DRIVER M: Tianshu Qiu diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 588f8eb95984..8af7bd91ef24 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -842,6 +842,20 @@ config VIDEO_IMX334 To compile this driver as a module, choose M here: the module will be called imx334. +config VIDEO_IMX335 + tristate "Sony IMX335 sensor support" + depends on OF_GPIO + depends on I2C && VIDEO_V4L2 + select VIDEO_V4L2_SUBDEV_API + select MEDIA_CONTROLLER + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the Sony + IMX335 camera. + + To compile this driver as a module, choose M here: the + module will be called imx335. + config VIDEO_IMX355 tristate "Sony IMX355 sensor support" depends on I2C && VIDEO_V4L2 diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 1168fa6b84ed..804d28fef3e4 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -124,6 +124,7 @@ obj-$(CONFIG_VIDEO_IMX274) += imx274.o obj-$(CONFIG_VIDEO_IMX290) += imx290.o obj-$(CONFIG_VIDEO_IMX319) += imx319.o obj-$(CONFIG_VIDEO_IMX334) += imx334.o +obj-$(CONFIG_VIDEO_IMX335) += imx335.o obj-$(CONFIG_VIDEO_IMX355) += imx355.o obj-$(CONFIG_VIDEO_MAX9286) += max9286.o obj-$(CONFIG_VIDEO_MAX9271_LIB) += max9271.o diff --git a/drivers/media/i2c/imx335.c b/drivers/media/i2c/imx335.c new file mode 100644 index 000000000000..410d6b86feb5 --- /dev/null +++ b/drivers/media/i2c/imx335.c @@ -0,0 +1,1129 @@ +// 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 + +/* Streaming Mode */ +#define IMX335_REG_MODE_SELECT 0x3000 +#define IMX335_MODE_STANDBY 0x01 +#define IMX335_MODE_STREAMING 0x00 + +/* Lines per frame */ +#define IMX335_REG_LPFR 0x3030 + +/* Chip ID */ +#define IMX335_REG_ID 0x3912 +#define IMX335_ID 0x00 + +/* Exposure control */ +#define IMX335_REG_SHUTTER 0x3058 +#define IMX335_EXPOSURE_MIN 1 +#define IMX335_EXPOSURE_OFFSET 9 +#define IMX335_EXPOSURE_STEP 1 +#define IMX335_EXPOSURE_DEFAULT 0x0648 + +/* Analog gain control */ +#define IMX335_REG_AGAIN 0x30e8 +#define IMX335_AGAIN_MIN 0 +#define IMX335_AGAIN_MAX 240 +#define IMX335_AGAIN_STEP 1 +#define IMX335_AGAIN_DEFAULT 0 + +/* Group hold register */ +#define IMX335_REG_HOLD 0x3001 + +/* Input clock rate */ +#define IMX335_INCLK_RATE 24000000 + +/* CSI2 HW configuration */ +#define IMX335_LINK_FREQ 594000000 +#define IMX335_NUM_DATA_LANES 4 + +#define IMX335_REG_MIN 0x00 +#define IMX335_REG_MAX 0xfffff + +/** + * struct imx335_reg - imx335 sensor register + * @address: Register address + * @val: Register value + */ +struct imx335_reg { + u16 address; + u8 val; +}; + +/** + * 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 imx335_reg *regs; +}; + +/** + * 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 + * @link_freq_idx: Link frequency index + * @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; + u32 link_freq_idx; + 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 + * @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 + * @cur_mode: Pointer to current selected sensor mode + * @mutex: Mutex for serializing sensor controls + * @streaming: Flag indicating streaming state + */ +struct imx335 { + struct device *dev; + struct i2c_client *client; + struct v4l2_subdev sd; + struct media_pad pad; + struct gpio_desc *reset_gpio; + 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; + const struct imx335_mode *cur_mode; + struct mutex mutex; + bool streaming; +}; + +static const s64 link_freq[] = { + IMX335_LINK_FREQ, +}; + +/* Sensor mode registers */ +static const struct imx335_reg mode_2592x1940_regs[] = { + {0x3000, 0x01}, + {0x3002, 0x00}, + {0x300c, 0x3b}, + {0x300d, 0x2a}, + {0x3018, 0x04}, + {0x302c, 0x3c}, + {0x302e, 0x20}, + {0x3056, 0x94}, + {0x3074, 0xc8}, + {0x3076, 0x28}, + {0x304c, 0x00}, + {0x314c, 0xc6}, + {0x315a, 0x02}, + {0x3168, 0xa0}, + {0x316a, 0x7e}, + {0x31a1, 0x00}, + {0x3288, 0x21}, + {0x328a, 0x02}, + {0x3414, 0x05}, + {0x3416, 0x18}, + {0x3648, 0x01}, + {0x364a, 0x04}, + {0x364c, 0x04}, + {0x3678, 0x01}, + {0x367c, 0x31}, + {0x367e, 0x31}, + {0x3706, 0x10}, + {0x3708, 0x03}, + {0x3714, 0x02}, + {0x3715, 0x02}, + {0x3716, 0x01}, + {0x3717, 0x03}, + {0x371c, 0x3d}, + {0x371d, 0x3f}, + {0x372c, 0x00}, + {0x372d, 0x00}, + {0x372e, 0x46}, + {0x372f, 0x00}, + {0x3730, 0x89}, + {0x3731, 0x00}, + {0x3732, 0x08}, + {0x3733, 0x01}, + {0x3734, 0xfe}, + {0x3735, 0x05}, + {0x3740, 0x02}, + {0x375d, 0x00}, + {0x375e, 0x00}, + {0x375f, 0x11}, + {0x3760, 0x01}, + {0x3768, 0x1b}, + {0x3769, 0x1b}, + {0x376a, 0x1b}, + {0x376b, 0x1b}, + {0x376c, 0x1a}, + {0x376d, 0x17}, + {0x376e, 0x0f}, + {0x3776, 0x00}, + {0x3777, 0x00}, + {0x3778, 0x46}, + {0x3779, 0x00}, + {0x377a, 0x89}, + {0x377b, 0x00}, + {0x377c, 0x08}, + {0x377d, 0x01}, + {0x377e, 0x23}, + {0x377f, 0x02}, + {0x3780, 0xd9}, + {0x3781, 0x03}, + {0x3782, 0xf5}, + {0x3783, 0x06}, + {0x3784, 0xa5}, + {0x3788, 0x0f}, + {0x378a, 0xd9}, + {0x378b, 0x03}, + {0x378c, 0xeb}, + {0x378d, 0x05}, + {0x378e, 0x87}, + {0x378f, 0x06}, + {0x3790, 0xf5}, + {0x3792, 0x43}, + {0x3794, 0x7a}, + {0x3796, 0xa1}, + {0x37b0, 0x36}, + {0x3a00, 0x01}, +}; + +/* Supported sensor mode configurations */ +static const struct imx335_mode supported_mode = { + .width = 2592, + .height = 1940, + .hblank = 342, + .vblank = 2560, + .vblank_min = 2560, + .vblank_max = 133060, + .pclk = 396000000, + .link_freq_idx = 0, + .code = MEDIA_BUS_FMT_SRGGB12_1X12, + .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_read_reg() - Read registers. + * @imx335: pointer to imx335 device + * @reg: register address + * @len: length of bytes to read. Max supported bytes is 4 + * @val: pointer to register value to be filled. + * + * Big endian register addresses with little endian values. + * + * Return: 0 if successful, error code otherwise. + */ +static int imx335_read_reg(struct imx335 *imx335, u16 reg, u32 len, u32 *val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx335->sd); + struct i2c_msg msgs[2] = {0}; + u8 addr_buf[2] = {0}; + u8 data_buf[4] = {0}; + int ret; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, addr_buf); + + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = ARRAY_SIZE(addr_buf); + msgs[0].buf = addr_buf; + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = data_buf; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *val = get_unaligned_le32(data_buf); + + return 0; +} + +/** + * imx335_write_reg() - Write register + * @imx335: pointer to imx335 device + * @reg: register address + * @len: length of bytes. Max supported bytes is 4 + * @val: register value + * + * Big endian register addresses with little endian values. + * + * Return: 0 if successful, error code otherwise. + */ +static int imx335_write_reg(struct imx335 *imx335, u16 reg, u32 len, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx335->sd); + u8 buf[6] = {0}; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, buf); + put_unaligned_le32(val, buf + 2); + if (i2c_master_send(client, buf, len + 2) != len + 2) + return -EIO; + + return 0; +} + +/** + * imx335_write_regs() - Write a list of registers + * @imx335: pointer to imx335 device + * @regs: list of registers to be written + * @len: length of registers array + * + * Return: 0 if successful. error code otherwise. + */ +static int imx335_write_regs(struct imx335 *imx335, + const struct imx335_reg *regs, u32 len) +{ + unsigned int i; + int ret; + + for (i = 0; i < len; i++) { + ret = imx335_write_reg(imx335, regs[i].address, 1, regs[i].val); + if (ret) + return ret; + } + + return 0; +} + +/** + * 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, mode->link_freq_idx); + 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; + + lpfr = imx335->vblank + imx335->cur_mode->height; + shutter = lpfr - exposure; + + dev_dbg(imx335->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u", + exposure, gain, shutter, lpfr); + + ret = imx335_write_reg(imx335, IMX335_REG_HOLD, 1, 1); + if (ret) + return ret; + + ret = imx335_write_reg(imx335, IMX335_REG_LPFR, 3, lpfr); + if (ret) + goto error_release_group_hold; + + ret = imx335_write_reg(imx335, IMX335_REG_SHUTTER, 3, shutter); + if (ret) + goto error_release_group_hold; + + ret = imx335_write_reg(imx335, IMX335_REG_AGAIN, 2, gain); + +error_release_group_hold: + imx335_write_reg(imx335, IMX335_REG_HOLD, 1, 0); + + 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; + + switch (ctrl->id) { + case V4L2_CID_VBLANK: + imx335->vblank = imx335->vblank_ctrl->val; + + dev_dbg(imx335->dev, "Received vblank %u, new lpfr %u", + imx335->vblank, + imx335->vblank + imx335->cur_mode->height); + + ret = __v4l2_ctrl_modify_range(imx335->exp_ctrl, + IMX335_EXPOSURE_MIN, + imx335->vblank + + imx335->cur_mode->height - + IMX335_EXPOSURE_OFFSET, + 1, IMX335_EXPOSURE_DEFAULT); + break; + case V4L2_CID_EXPOSURE: + /* Set controls only if sensor is in power on state */ + if (!pm_runtime_get_if_in_use(imx335->dev)) + return 0; + + exposure = ctrl->val; + analog_gain = imx335->again_ctrl->val; + + dev_dbg(imx335->dev, "Received exp %u, analog gain %u", + exposure, analog_gain); + + ret = imx335_update_exp_gain(imx335, exposure, analog_gain); + + pm_runtime_put(imx335->dev); + + break; + default: + dev_err(imx335->dev, "Invalid control %d", ctrl->id); + ret = -EINVAL; + } + + return ret; +} + +/* V4l2 subdevice control ops*/ +static const struct v4l2_ctrl_ops imx335_ctrl_ops = { + .s_ctrl = imx335_set_ctrl, +}; + +/** + * 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 > 0) + return -EINVAL; + + code->code = supported_mode.code; + + 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) +{ + 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; +} + +/** + * 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 = 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; +} + +/** + * 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_get_try_format(sd, 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 ret = 0; + + mutex_lock(&imx335->mutex); + + mode = &supported_mode; + imx335_fill_pad_format(imx335, mode, fmt); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *framefmt; + + framefmt = v4l2_subdev_get_try_format(sd, 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_pad_cfg() - Initialize sub-device pad configuration + * @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_pad_cfg(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); + + return imx335_set_pad_format(sd, sd_state, &fmt); +} + +/** + * 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; + + /* Write sensor mode registers */ + reg_list = &imx335->cur_mode->reg_list; + ret = imx335_write_regs(imx335, reg_list->regs, + reg_list->num_of_regs); + if (ret) { + dev_err(imx335->dev, "fail to write initial registers"); + 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"); + return ret; + } + + /* Start streaming */ + ret = imx335_write_reg(imx335, IMX335_REG_MODE_SELECT, + 1, IMX335_MODE_STREAMING); + if (ret) { + dev_err(imx335->dev, "fail to start streaming"); + 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 imx335_write_reg(imx335, IMX335_REG_MODE_SELECT, + 1, IMX335_MODE_STANDBY); +} + +/** + * 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 (imx335->streaming == enable) { + mutex_unlock(&imx335->mutex); + return 0; + } + + 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); + } + + imx335->streaming = enable; + + 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; + u32 val; + + ret = imx335_read_reg(imx335, IMX335_REG_ID, 2, &val); + if (ret) + return ret; + + if (val != IMX335_ID) { + dev_err(imx335->dev, "chip id mismatch: %x!=%x", + 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_LOW); + if (IS_ERR(imx335->reset_gpio)) { + dev_err(imx335->dev, "failed to get reset gpio %ld", + PTR_ERR(imx335->reset_gpio)); + return PTR_ERR(imx335->reset_gpio); + } + + /* 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"); + return PTR_ERR(imx335->inclk); + } + + rate = clk_get_rate(imx335->inclk); + if (rate != IMX335_INCLK_RATE) { + dev_err(imx335->dev, "inclk frequency mismatch"); + return -EINVAL; + } + + 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 != IMX335_NUM_DATA_LANES) { + dev_err(imx335->dev, + "number of CSI2 data lanes %d is not supported", + bus_cfg.bus.mipi_csi2.num_data_lanes); + ret = -EINVAL; + goto done_endpoint_free; + } + + if (!bus_cfg.nr_of_link_frequencies) { + dev_err(imx335->dev, "no link frequencies defined"); + ret = -EINVAL; + goto done_endpoint_free; + } + + for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) + if (bus_cfg.link_frequencies[i] == IMX335_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 imx335_video_ops = { + .s_stream = imx335_set_stream, +}; + +static const struct v4l2_subdev_pad_ops imx335_pad_ops = { + .init_cfg = imx335_init_pad_cfg, + .enum_mbus_code = imx335_enum_mbus_code, + .enum_frame_size = imx335_enum_frame_size, + .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, +}; + +/** + * 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; + + gpiod_set_value_cansleep(imx335->reset_gpio, 1); + + ret = clk_prepare_enable(imx335->inclk); + if (ret) { + dev_err(imx335->dev, "fail to enable inclk"); + goto error_reset; + } + + usleep_range(20, 22); + + return 0; + +error_reset: + gpiod_set_value_cansleep(imx335->reset_gpio, 0); + + 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, 0); + + clk_disable_unprepare(imx335->inclk); + + 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; + u32 lpfr; + int ret; + + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6); + 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); + + 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); + + /* 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, + ARRAY_SIZE(link_freq) - + 1, + mode->link_freq_idx, + 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, + IMX335_REG_MIN, + IMX335_REG_MAX, + 1, mode->hblank); + if (imx335->hblank_ctrl) + imx335->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + if (ctrl_hdlr->error) { + dev_err(imx335->dev, "control init failed: %d", + 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; + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&imx335->sd, client, &imx335_subdev_ops); + + ret = imx335_parse_hw_config(imx335); + if (ret) { + dev_err(imx335->dev, "HW configuration is not supported"); + return ret; + } + + mutex_init(&imx335->mutex); + + ret = imx335_power_on(imx335->dev); + if (ret) { + dev_err(imx335->dev, "failed to power-on the sensor"); + goto error_mutex_destroy; + } + + /* Check module identity */ + ret = imx335_detect(imx335); + if (ret) { + dev_err(imx335->dev, "failed to find sensor: %d", ret); + goto error_power_off; + } + + /* Set default mode to max resolution */ + imx335->cur_mode = &supported_mode; + imx335->vblank = imx335->cur_mode->vblank; + + ret = imx335_init_controls(imx335); + if (ret) { + dev_err(imx335->dev, "failed to init controls: %d", 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", 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", 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 int 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); + + return 0; +} + +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_new = 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"); -- cgit v1.2.3 From 333b3125d1300e9a06e537295b9eb6042d131492 Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:42 +0200 Subject: media: dt-bindings: media: Add bindings for imx412 - Add dt-bindings documentation for Sony imx412 sensor driver - Add MAINTAINERS entry for Sony imx412 binding documentation Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Reviewed-by: Rob Herring Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- .../devicetree/bindings/media/i2c/sony,imx412.yaml | 91 ++++++++++++++++++++++ MAINTAINERS | 8 ++ 2 files changed, 99 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml (limited to 'MAINTAINERS') diff --git a/Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml b/Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml new file mode 100644 index 000000000000..1edeabf39e6a --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml @@ -0,0 +1,91 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2021 Intel Corporation +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/sony,imx412.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sony IMX412 Sensor + +maintainers: + - Paul J. Murphy + - Daniele Alessandrelli + +description: + IMX412 sensor is a Sony CMOS active pixel digital image sensor with an active + array size of 4072H x 3176V. It is programmable through I2C interface. The + I2C client address is fixed to 0x1a as per sensor data sheet. Image data is + sent through MIPI CSI-2. + +properties: + compatible: + const: sony,imx412 + reg: + description: I2C address + maxItems: 1 + + assigned-clocks: true + assigned-clock-parents: true + assigned-clock-rates: true + + clocks: + description: Clock frequency 6MHz, 12MHz, 18MHz, 24MHz or 27MHz + maxItems: 1 + + reset-gpios: + description: Reference to the GPIO connected to the XCLR pin, if any. + maxItems: 1 + + port: + additionalProperties: false + $ref: /schemas/graph.yaml#/properties/port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: true + link-frequencies: true + + required: + - data-lanes + - link-frequencies + + required: + - endpoint + +required: + - compatible + - reg + - clocks + - port + +additionalProperties: false + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + camera@1a { + compatible = "sony,imx412"; + reg = <0x1a>; + clocks = <&imx412_clk>; + + assigned-clocks = <&imx412_clk>; + assigned-clock-parents = <&imx412_clk_parent>; + assigned-clock-rates = <24000000>; + + port { + imx412: endpoint { + remote-endpoint = <&cam>; + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <600000000>; + }; + }; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 9c0e728771fc..358ef920fea8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17292,6 +17292,14 @@ S: Maintained T: git git://linuxtv.org/media_tree.git F: drivers/media/i2c/imx355.c +SONY IMX412 SENSOR DRIVER +M: Paul J. Murphy +M: Daniele Alessandrelli +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml + SONY MEMORYSTICK SUBSYSTEM M: Maxim Levitsky M: Alex Dubov -- cgit v1.2.3 From 9214e86c0cc1ea6c811f14c293fed9ce1baefbae Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:43 +0200 Subject: media: i2c: Add imx412 camera sensor driver Add a v4l2 sub-device driver for the Sony imx412 image sensor. This is a camera sensor using the i2c bus for control and the csi-2 bus for data. The following features are supported: - manual exposure and analog gain control support - vblank/hblank/pixel rate/link freq control support - supported resolution: - 4056x3040 @ 30fps - supported bayer order output: - SRGGB10 [Sakari Ailus: Rebase on commit c802a4174beeb25cb539c806c9d0d3c0f61dfa53.] Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- MAINTAINERS | 1 + drivers/media/i2c/Kconfig | 14 + drivers/media/i2c/Makefile | 2 +- drivers/media/i2c/imx412.c | 1272 ++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1288 insertions(+), 1 deletion(-) create mode 100644 drivers/media/i2c/imx412.c (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index 358ef920fea8..955d74fe8b9e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17299,6 +17299,7 @@ L: linux-media@vger.kernel.org S: Maintained T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml +F: drivers/media/i2c/imx412.c SONY MEMORYSTICK SUBSYSTEM M: Maxim Levitsky diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 8af7bd91ef24..bdae664beb87 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -868,6 +868,20 @@ config VIDEO_IMX355 To compile this driver as a module, choose M here: the module will be called imx355. +config VIDEO_IMX412 + tristate "Sony IMX412 sensor support" + depends on OF_GPIO + depends on I2C && VIDEO_V4L2 + select VIDEO_V4L2_SUBDEV_API + select MEDIA_CONTROLLER + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the Sony + IMX412 camera. + + To compile this driver as a module, choose M here: the + module will be called imx412. + config VIDEO_OV02A10 tristate "OmniVision OV02A10 sensor support" depends on VIDEO_V4L2 && I2C diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 804d28fef3e4..303995beb673 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -126,10 +126,10 @@ obj-$(CONFIG_VIDEO_IMX319) += imx319.o obj-$(CONFIG_VIDEO_IMX334) += imx334.o obj-$(CONFIG_VIDEO_IMX335) += imx335.o obj-$(CONFIG_VIDEO_IMX355) += imx355.o +obj-$(CONFIG_VIDEO_IMX412) += imx412.o obj-$(CONFIG_VIDEO_MAX9286) += max9286.o obj-$(CONFIG_VIDEO_MAX9271_LIB) += max9271.o obj-$(CONFIG_VIDEO_RDACM20) += rdacm20.o obj-$(CONFIG_VIDEO_RDACM21) += rdacm21.o obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o - obj-$(CONFIG_SDR_MAX2175) += max2175.o diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c new file mode 100644 index 000000000000..be3f6ea55559 --- /dev/null +++ b/drivers/media/i2c/imx412.c @@ -0,0 +1,1272 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Sony imx412 Camera Sensor Driver + * + * Copyright (C) 2021 Intel Corporation + */ +#include + +#include +#include +#include +#include +#include + +#include +#include +#include + +/* Streaming Mode */ +#define IMX412_REG_MODE_SELECT 0x0100 +#define IMX412_MODE_STANDBY 0x00 +#define IMX412_MODE_STREAMING 0x01 + +/* Lines per frame */ +#define IMX412_REG_LPFR 0x0340 + +/* Chip ID */ +#define IMX412_REG_ID 0x0016 +#define IMX412_ID 0x577 + +/* Exposure control */ +#define IMX412_REG_EXPOSURE_CIT 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 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 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 - imx412 sensor register + * @address: Register address + * @val: Register value + */ +struct imx412_reg { + u16 address; + u8 val; +}; + +/** + * 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 imx412_reg *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; +}; + +/** + * struct imx412 - imx412 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 + * @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 + * @cur_mode: Pointer to current selected sensor mode + * @mutex: Mutex for serializing sensor controls + * @streaming: Flag indicating streaming state + */ +struct imx412 { + struct device *dev; + struct i2c_client *client; + struct v4l2_subdev sd; + struct media_pad pad; + struct gpio_desc *reset_gpio; + 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; + const struct imx412_mode *cur_mode; + struct mutex mutex; + bool streaming; +}; + +static const s64 link_freq[] = { + IMX412_LINK_FREQ, +}; + +/* Sensor mode registers */ +static const struct imx412_reg mode_4056x3040_regs[] = { + {0x0136, 0x18}, + {0x0137, 0x00}, + {0x3c7e, 0x08}, + {0x3c7f, 0x02}, + {0x38a8, 0x1f}, + {0x38a9, 0xff}, + {0x38aa, 0x1f}, + {0x38ab, 0xff}, + {0x55d4, 0x00}, + {0x55d5, 0x00}, + {0x55d6, 0x07}, + {0x55d7, 0xff}, + {0x55e8, 0x07}, + {0x55e9, 0xff}, + {0x55ea, 0x00}, + {0x55eb, 0x00}, + {0x575c, 0x07}, + {0x575d, 0xff}, + {0x575e, 0x00}, + {0x575f, 0x00}, + {0x5764, 0x00}, + {0x5765, 0x00}, + {0x5766, 0x07}, + {0x5767, 0xff}, + {0x5974, 0x04}, + {0x5975, 0x01}, + {0x5f10, 0x09}, + {0x5f11, 0x92}, + {0x5f12, 0x32}, + {0x5f13, 0x72}, + {0x5f14, 0x16}, + {0x5f15, 0xba}, + {0x5f17, 0x13}, + {0x5f18, 0x24}, + {0x5f19, 0x60}, + {0x5f1a, 0xe3}, + {0x5f1b, 0xad}, + {0x5f1c, 0x74}, + {0x5f2d, 0x25}, + {0x5f5c, 0xd0}, + {0x6a22, 0x00}, + {0x6a23, 0x1d}, + {0x7ba8, 0x00}, + {0x7ba9, 0x00}, + {0x886b, 0x00}, + {0x9002, 0x0a}, + {0x9004, 0x1a}, + {0x9214, 0x93}, + {0x9215, 0x69}, + {0x9216, 0x93}, + {0x9217, 0x6b}, + {0x9218, 0x93}, + {0x9219, 0x6d}, + {0x921a, 0x57}, + {0x921b, 0x58}, + {0x921c, 0x57}, + {0x921d, 0x59}, + {0x921e, 0x57}, + {0x921f, 0x5a}, + {0x9220, 0x57}, + {0x9221, 0x5b}, + {0x9222, 0x93}, + {0x9223, 0x02}, + {0x9224, 0x93}, + {0x9225, 0x03}, + {0x9226, 0x93}, + {0x9227, 0x04}, + {0x9228, 0x93}, + {0x9229, 0x05}, + {0x922a, 0x98}, + {0x922b, 0x21}, + {0x922c, 0xb2}, + {0x922d, 0xdb}, + {0x922e, 0xb2}, + {0x922f, 0xdc}, + {0x9230, 0xb2}, + {0x9231, 0xdd}, + {0x9232, 0xe2}, + {0x9233, 0xe1}, + {0x9234, 0xb2}, + {0x9235, 0xe2}, + {0x9236, 0xb2}, + {0x9237, 0xe3}, + {0x9238, 0xb7}, + {0x9239, 0xb9}, + {0x923a, 0xb7}, + {0x923b, 0xbb}, + {0x923c, 0xb7}, + {0x923d, 0xbc}, + {0x923e, 0xb7}, + {0x923f, 0xc5}, + {0x9240, 0xb7}, + {0x9241, 0xc7}, + {0x9242, 0xb7}, + {0x9243, 0xc9}, + {0x9244, 0x98}, + {0x9245, 0x56}, + {0x9246, 0x98}, + {0x9247, 0x55}, + {0x9380, 0x00}, + {0x9381, 0x62}, + {0x9382, 0x00}, + {0x9383, 0x56}, + {0x9384, 0x00}, + {0x9385, 0x52}, + {0x9388, 0x00}, + {0x9389, 0x55}, + {0x938a, 0x00}, + {0x938b, 0x55}, + {0x938c, 0x00}, + {0x938d, 0x41}, + {0x5078, 0x01}, + {0x0112, 0x0a}, + {0x0113, 0x0a}, + {0x0114, 0x03}, + {0x0342, 0x11}, + {0x0343, 0xa0}, + {0x0340, 0x0d}, + {0x0341, 0xda}, + {0x3210, 0x00}, + {0x0344, 0x00}, + {0x0345, 0x00}, + {0x0346, 0x00}, + {0x0347, 0x00}, + {0x0348, 0x0f}, + {0x0349, 0xd7}, + {0x034a, 0x0b}, + {0x034b, 0xdf}, + {0x00e3, 0x00}, + {0x00e4, 0x00}, + {0x00e5, 0x01}, + {0x00fc, 0x0a}, + {0x00fd, 0x0a}, + {0x00fe, 0x0a}, + {0x00ff, 0x0a}, + {0xe013, 0x00}, + {0x0220, 0x00}, + {0x0221, 0x11}, + {0x0381, 0x01}, + {0x0383, 0x01}, + {0x0385, 0x01}, + {0x0387, 0x01}, + {0x0900, 0x00}, + {0x0901, 0x11}, + {0x0902, 0x00}, + {0x3140, 0x02}, + {0x3241, 0x11}, + {0x3250, 0x03}, + {0x3e10, 0x00}, + {0x3e11, 0x00}, + {0x3f0d, 0x00}, + {0x3f42, 0x00}, + {0x3f43, 0x00}, + {0x0401, 0x00}, + {0x0404, 0x00}, + {0x0405, 0x10}, + {0x0408, 0x00}, + {0x0409, 0x00}, + {0x040a, 0x00}, + {0x040b, 0x00}, + {0x040c, 0x0f}, + {0x040d, 0xd8}, + {0x040e, 0x0b}, + {0x040f, 0xe0}, + {0x034c, 0x0f}, + {0x034d, 0xd8}, + {0x034e, 0x0b}, + {0x034f, 0xe0}, + {0x0301, 0x05}, + {0x0303, 0x02}, + {0x0305, 0x04}, + {0x0306, 0x00}, + {0x0307, 0xc8}, + {0x0309, 0x0a}, + {0x030b, 0x01}, + {0x030d, 0x02}, + {0x030e, 0x01}, + {0x030f, 0x5e}, + {0x0310, 0x00}, + {0x0820, 0x12}, + {0x0821, 0xc0}, + {0x0822, 0x00}, + {0x0823, 0x00}, + {0x3e20, 0x01}, + {0x3e37, 0x00}, + {0x3f50, 0x00}, + {0x3f56, 0x00}, + {0x3f57, 0xe2}, + {0x3c0a, 0x5a}, + {0x3c0b, 0x55}, + {0x3c0c, 0x28}, + {0x3c0d, 0x07}, + {0x3c0e, 0xff}, + {0x3c0f, 0x00}, + {0x3c10, 0x00}, + {0x3c11, 0x02}, + {0x3c12, 0x00}, + {0x3c13, 0x03}, + {0x3c14, 0x00}, + {0x3c15, 0x00}, + {0x3c16, 0x0c}, + {0x3c17, 0x0c}, + {0x3c18, 0x0c}, + {0x3c19, 0x0a}, + {0x3c1a, 0x0a}, + {0x3c1b, 0x0a}, + {0x3c1c, 0x00}, + {0x3c1d, 0x00}, + {0x3c1e, 0x00}, + {0x3c1f, 0x00}, + {0x3c20, 0x00}, + {0x3c21, 0x00}, + {0x3c22, 0x3f}, + {0x3c23, 0x0a}, + {0x3e35, 0x01}, + {0x3f4a, 0x03}, + {0x3f4b, 0xbf}, + {0x3f26, 0x00}, + {0x0202, 0x0d}, + {0x0203, 0xc4}, + {0x0204, 0x00}, + {0x0205, 0x00}, + {0x020e, 0x01}, + {0x020f, 0x00}, + {0x0210, 0x01}, + {0x0211, 0x00}, + {0x0212, 0x01}, + {0x0213, 0x00}, + {0x0214, 0x01}, + {0x0215, 0x00}, + {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_read_reg() - Read registers. + * @imx412: pointer to imx412 device + * @reg: register address + * @len: length of bytes to read. Max supported bytes is 4 + * @val: pointer to register value to be filled. + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_read_reg(struct imx412 *imx412, u16 reg, u32 len, u32 *val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd); + struct i2c_msg msgs[2] = {0}; + u8 addr_buf[2] = {0}; + u8 data_buf[4] = {0}; + int ret; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, addr_buf); + + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = ARRAY_SIZE(addr_buf); + msgs[0].buf = addr_buf; + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = &data_buf[4 - len]; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *val = get_unaligned_be32(data_buf); + + return 0; +} + +/** + * imx412_write_reg() - Write register + * @imx412: pointer to imx412 device + * @reg: register address + * @len: length of bytes. Max supported bytes is 4 + * @val: register value + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_write_reg(struct imx412 *imx412, u16 reg, u32 len, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd); + u8 buf[6] = {0}; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, buf); + put_unaligned_be32(val << (8 * (4 - len)), buf + 2); + if (i2c_master_send(client, buf, len + 2) != len + 2) + return -EIO; + + return 0; +} + +/** + * imx412_write_regs() - Write a list of registers + * @imx412: pointer to imx412 device + * @regs: list of registers to be written + * @len: length of registers array + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_write_regs(struct imx412 *imx412, + const struct imx412_reg *regs, u32 len) +{ + unsigned int i; + int ret; + + for (i = 0; i < len; i++) { + ret = imx412_write_reg(imx412, regs[i].address, 1, regs[i].val); + if (ret) + return ret; + } + + return 0; +} + +/** + * 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, shutter; + int ret; + + lpfr = imx412->vblank + imx412->cur_mode->height; + shutter = lpfr - exposure; + + dev_dbg(imx412->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u", + exposure, gain, shutter, lpfr); + + ret = imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 1); + if (ret) + return ret; + + ret = imx412_write_reg(imx412, IMX412_REG_LPFR, 2, lpfr); + if (ret) + goto error_release_group_hold; + + ret = imx412_write_reg(imx412, IMX412_REG_EXPOSURE_CIT, 2, shutter); + if (ret) + goto error_release_group_hold; + + ret = imx412_write_reg(imx412, IMX412_REG_AGAIN, 2, gain); + +error_release_group_hold: + imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 0); + + return ret; +} + +/** + * imx412_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 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", + 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", + 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", ctrl->id); + ret = -EINVAL; + } + + return ret; +} + +/* V4l2 subdevice control ops*/ +static const struct v4l2_ctrl_ops imx412_ctrl_ops = { + .s_ctrl = imx412_set_ctrl, +}; + +/** + * imx412_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes + * @sd: pointer to imx412 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 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; +} + +/** + * imx412_enum_frame_size() - Enumerate V4L2 sub-device frame sizes + * @sd: pointer to imx412 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 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; +} + +/** + * imx412_get_pad_format() - Get subdevice pad format + * @sd: pointer to imx412 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 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); + + mutex_lock(&imx412->mutex); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *framefmt; + + framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); + fmt->format = *framefmt; + } else { + imx412_fill_pad_format(imx412, imx412->cur_mode, fmt); + } + + mutex_unlock(&imx412->mutex); + + return 0; +} + +/** + * imx412_set_pad_format() - Set subdevice pad format + * @sd: pointer to imx412 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 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; + + mutex_lock(&imx412->mutex); + + 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_get_try_format(sd, sd_state, fmt->pad); + *framefmt = fmt->format; + } else { + ret = imx412_update_controls(imx412, mode); + if (!ret) + imx412->cur_mode = mode; + } + + mutex_unlock(&imx412->mutex); + + return ret; +} + +/** + * imx412_init_pad_cfg() - Initialize sub-device pad configuration + * @sd: pointer to imx412 V4L2 sub-device structure + * @sd_state: V4L2 sub-device configuration + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_init_pad_cfg(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_start_streaming() - Start sensor stream + * @imx412: pointer to imx412 device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_start_streaming(struct imx412 *imx412) +{ + const struct imx412_reg_list *reg_list; + int ret; + + /* Write sensor mode registers */ + reg_list = &imx412->cur_mode->reg_list; + ret = imx412_write_regs(imx412, reg_list->regs, + reg_list->num_of_regs); + if (ret) { + dev_err(imx412->dev, "fail to write initial registers"); + return ret; + } + + /* 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"); + return ret; + } + + /* Delay is required before streaming*/ + usleep_range(7400, 8000); + + /* Start streaming */ + ret = imx412_write_reg(imx412, IMX412_REG_MODE_SELECT, + 1, IMX412_MODE_STREAMING); + if (ret) { + dev_err(imx412->dev, "fail to start streaming"); + return ret; + } + + return 0; +} + +/** + * imx412_stop_streaming() - Stop sensor stream + * @imx412: pointer to imx412 device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_stop_streaming(struct imx412 *imx412) +{ + return imx412_write_reg(imx412, IMX412_REG_MODE_SELECT, + 1, IMX412_MODE_STANDBY); +} + +/** + * imx412_set_stream() - Enable sensor streaming + * @sd: pointer to imx412 subdevice + * @enable: set to enable sensor streaming + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct imx412 *imx412 = to_imx412(sd); + int ret; + + mutex_lock(&imx412->mutex); + + if (imx412->streaming == enable) { + mutex_unlock(&imx412->mutex); + return 0; + } + + if (enable) { + ret = pm_runtime_resume_and_get(imx412->dev); + if (ret) + goto error_unlock; + + ret = imx412_start_streaming(imx412); + if (ret) + goto error_power_off; + } else { + imx412_stop_streaming(imx412); + pm_runtime_put(imx412->dev); + } + + imx412->streaming = enable; + + mutex_unlock(&imx412->mutex); + + return 0; + +error_power_off: + pm_runtime_put(imx412->dev); +error_unlock: + mutex_unlock(&imx412->mutex); + + return ret; +} + +/** + * 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; + u32 val; + + ret = imx412_read_reg(imx412, IMX412_REG_ID, 2, &val); + if (ret) + return ret; + + if (val != IMX412_ID) { + dev_err(imx412->dev, "chip id mismatch: %x!=%x", + IMX412_ID, val); + return -ENXIO; + } + + 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_LOW); + if (IS_ERR(imx412->reset_gpio)) { + dev_err(imx412->dev, "failed to get reset gpio %ld", + PTR_ERR(imx412->reset_gpio)); + return PTR_ERR(imx412->reset_gpio); + } + + /* Get sensor input clock */ + imx412->inclk = devm_clk_get(imx412->dev, NULL); + if (IS_ERR(imx412->inclk)) { + dev_err(imx412->dev, "could not get inclk"); + return PTR_ERR(imx412->inclk); + } + + rate = clk_get_rate(imx412->inclk); + if (rate != IMX412_INCLK_RATE) { + dev_err(imx412->dev, "inclk frequency mismatch"); + return -EINVAL; + } + + 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", + 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"); + 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 = imx412_set_stream, +}; + +static const struct v4l2_subdev_pad_ops imx412_pad_ops = { + .init_cfg = imx412_init_pad_cfg, + .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, +}; + +static const struct v4l2_subdev_ops imx412_subdev_ops = { + .video = &imx412_video_ops, + .pad = &imx412_pad_ops, +}; + +/** + * imx412_power_on() - Sensor power on sequence + * @dev: pointer to i2c device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx412 *imx412 = to_imx412(sd); + int ret; + + gpiod_set_value_cansleep(imx412->reset_gpio, 1); + + ret = clk_prepare_enable(imx412->inclk); + if (ret) { + dev_err(imx412->dev, "fail to enable inclk"); + goto error_reset; + } + + usleep_range(1000, 1200); + + return 0; + +error_reset: + gpiod_set_value_cansleep(imx412->reset_gpio, 0); + + return ret; +} + +/** + * imx412_power_off() - Sensor power off sequence + * @dev: pointer to i2c device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx412 *imx412 = to_imx412(sd); + + gpiod_set_value_cansleep(imx412->reset_gpio, 0); + + clk_disable_unprepare(imx412->inclk); + + 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; + + /* Serialize controls with sensor device */ + ctrl_hdlr->lock = &imx412->mutex; + + /* 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", + ctrl_hdlr->error); + v4l2_ctrl_handler_free(ctrl_hdlr); + return ctrl_hdlr->error; + } + + imx412->sd.ctrl_handler = ctrl_hdlr; + + return 0; +} + +/** + * imx412_probe() - I2C client device binding + * @client: pointer to i2c client device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_probe(struct i2c_client *client) +{ + struct imx412 *imx412; + int ret; + + imx412 = devm_kzalloc(&client->dev, sizeof(*imx412), GFP_KERNEL); + if (!imx412) + return -ENOMEM; + + imx412->dev = &client->dev; + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&imx412->sd, client, &imx412_subdev_ops); + + ret = imx412_parse_hw_config(imx412); + if (ret) { + dev_err(imx412->dev, "HW configuration is not supported"); + return ret; + } + + mutex_init(&imx412->mutex); + + ret = imx412_power_on(imx412->dev); + if (ret) { + dev_err(imx412->dev, "failed to power-on the sensor"); + goto error_mutex_destroy; + } + + /* Check module identity */ + ret = imx412_detect(imx412); + if (ret) { + dev_err(imx412->dev, "failed to find sensor: %d", 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", ret); + goto error_power_off; + } + + /* Initialize subdev */ + imx412->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + imx412->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + /* 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", ret); + goto error_handler_free; + } + + ret = v4l2_async_register_subdev_sensor(&imx412->sd); + if (ret < 0) { + dev_err(imx412->dev, + "failed to register async subdev: %d", ret); + goto error_media_entity; + } + + pm_runtime_set_active(imx412->dev); + pm_runtime_enable(imx412->dev); + pm_runtime_idle(imx412->dev); + + return 0; + +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); +error_mutex_destroy: + mutex_destroy(&imx412->mutex); + + return ret; +} + +/** + * imx412_remove() - I2C client device unbinding + * @client: pointer to I2C client device + * + * Return: 0 if successful, error code otherwise. + */ +static int imx412_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx412 *imx412 = to_imx412(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)) + imx412_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); + + mutex_destroy(&imx412->mutex); + + return 0; +} + +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" }, + { } +}; + +MODULE_DEVICE_TABLE(of, imx412_of_match); + +static struct i2c_driver imx412_driver = { + .probe_new = 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"); -- cgit v1.2.3 From 4874ea39874731e589dc5b329f5c03965c2a6474 Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:44 +0200 Subject: media: dt-bindings: media: Add bindings for ov9282 - Add dt-bindings documentation for OmniVision ov9282 sensor driver - Add MAINTAINERS entry for OmniVision ov9282 binding documentation Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Reviewed-by: Rob Herring Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- .../devicetree/bindings/media/i2c/ovti,ov9282.yaml | 91 ++++++++++++++++++++++ MAINTAINERS | 8 ++ 2 files changed, 99 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml (limited to 'MAINTAINERS') diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml new file mode 100644 index 000000000000..ad42992c6da3 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml @@ -0,0 +1,91 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2021 Intel Corporation +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/ovti,ov9282.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: OmniVision OV9282 Sensor + +maintainers: + - Paul J. Murphy + - Daniele Alessandrelli + +description: + OV9282 sensor is an OmniVision black & white CMOS active pixel digital image + sensor with an active array size of 1296H x 816V. It is programmable through + I2C interface. The I2C client address is fixed to 0x60/0x70 as per sensor data + sheet. Image data is sent through MIPI CSI-2. + +properties: + compatible: + const: ovti,ov9282 + reg: + description: I2C address + maxItems: 1 + + assigned-clocks: true + assigned-clock-parents: true + assigned-clock-rates: true + + clocks: + description: Clock frequency from 6 to 27MHz + maxItems: 1 + + reset-gpios: + description: Reference to the GPIO connected to the XCLR pin, if any. + maxItems: 1 + + port: + additionalProperties: false + $ref: /schemas/graph.yaml#/properties/port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: true + link-frequencies: true + + required: + - data-lanes + - link-frequencies + + required: + - endpoint + +required: + - compatible + - reg + - clocks + - port + +additionalProperties: false + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + camera@60 { + compatible = "ovti,ov9282"; + reg = <0x60>; + clocks = <&ov9282_clk>; + + assigned-clocks = <&ov9282_clk>; + assigned-clock-parents = <&ov9282_clk_parent>; + assigned-clock-rates = <24000000>; + + port { + ov9282: endpoint { + remote-endpoint = <&cam>; + data-lanes = <1 2>; + link-frequencies = /bits/ 64 <800000000>; + }; + }; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 955d74fe8b9e..fe9ffeeae9f4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13772,6 +13772,14 @@ T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/i2c/ov8856.yaml F: drivers/media/i2c/ov8856.c +OMNIVISION OV9282 SENSOR DRIVER +M: Paul J. Murphy +M: Daniele Alessandrelli +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml + OMNIVISION OV9640 SENSOR DRIVER M: Petr Cvek L: linux-media@vger.kernel.org -- cgit v1.2.3 From 14ea315bbeb75aa996b577822999df4edbcfb3d0 Mon Sep 17 00:00:00 2001 From: Martina Krasteva Date: Thu, 27 May 2021 16:21:45 +0200 Subject: media: i2c: Add ov9282 camera sensor driver Add a v4l2 sub-device driver for the OmniVisison ov9282 black&white image sensor. The camera sensor uses the i2c bus for control and the csi-2 bus for data. The following features are supported: - manual exposure and analog gain control support - vblank/hblank/pixel rate/link freq control support - supported resolution: - 1280x720 @ 30fps [Sakari Ailus: Rebase on commit c802a4174beeb25cb539c806c9d0d3c0f61dfa53.] Signed-off-by: Martina Krasteva Acked-by: Daniele Alessandrelli Acked-by: Paul J. Murphy Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- MAINTAINERS | 1 + drivers/media/i2c/Kconfig | 14 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/ov9282.c | 1137 ++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1153 insertions(+) create mode 100644 drivers/media/i2c/ov9282.c (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index fe9ffeeae9f4..a958368c09d1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13779,6 +13779,7 @@ L: linux-media@vger.kernel.org S: Maintained T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml +F: drivers/media/i2c/ov9282.c OMNIVISION OV9640 SENSOR DRIVER M: Petr Cvek diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index bdae664beb87..08feb3e8c1bf 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -1131,6 +1131,20 @@ config VIDEO_OV8865 To compile this driver as a module, choose M here: the module will be called ov8865. +config VIDEO_OV9282 + tristate "OmniVision OV9282 sensor support" + depends on OF_GPIO + depends on I2C && VIDEO_V4L2 + select VIDEO_V4L2_SUBDEV_API + select MEDIA_CONTROLLER + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the OmniVision + OV9282 camera sensor. + + To compile this driver as a module, choose M here: the + module will be called ov9282. + config VIDEO_OV9640 tristate "OmniVision OV9640 sensor support" depends on I2C && VIDEO_V4L2 diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 303995beb673..83268f20aa3a 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -84,6 +84,7 @@ obj-$(CONFIG_VIDEO_OV772X) += ov772x.o obj-$(CONFIG_VIDEO_OV7740) += ov7740.o obj-$(CONFIG_VIDEO_OV8856) += ov8856.o obj-$(CONFIG_VIDEO_OV8865) += ov8865.o +obj-$(CONFIG_VIDEO_OV9282) += ov9282.o obj-$(CONFIG_VIDEO_OV9640) += ov9640.o obj-$(CONFIG_VIDEO_OV9650) += ov9650.o obj-$(CONFIG_VIDEO_OV9734) += ov9734.o diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c new file mode 100644 index 000000000000..2e0b315801e5 --- /dev/null +++ b/drivers/media/i2c/ov9282.c @@ -0,0 +1,1137 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * OmniVision ov9282 Camera Sensor Driver + * + * Copyright (C) 2021 Intel Corporation + */ +#include + +#include +#include +#include +#include +#include + +#include +#include +#include + +/* Streaming Mode */ +#define OV9282_REG_MODE_SELECT 0x0100 +#define OV9282_MODE_STANDBY 0x00 +#define OV9282_MODE_STREAMING 0x01 + +/* Lines per frame */ +#define OV9282_REG_LPFR 0x380e + +/* Chip ID */ +#define OV9282_REG_ID 0x300a +#define OV9282_ID 0x9281 + +/* Exposure control */ +#define OV9282_REG_EXPOSURE 0x3500 +#define OV9282_EXPOSURE_MIN 1 +#define OV9282_EXPOSURE_OFFSET 12 +#define OV9282_EXPOSURE_STEP 1 +#define OV9282_EXPOSURE_DEFAULT 0x0282 + +/* Analog gain control */ +#define OV9282_REG_AGAIN 0x3509 +#define OV9282_AGAIN_MIN 0x10 +#define OV9282_AGAIN_MAX 0xff +#define OV9282_AGAIN_STEP 1 +#define OV9282_AGAIN_DEFAULT 0x10 + +/* Group hold register */ +#define OV9282_REG_HOLD 0x3308 + +/* Input clock rate */ +#define OV9282_INCLK_RATE 24000000 + +/* CSI2 HW configuration */ +#define OV9282_LINK_FREQ 400000000 +#define OV9282_NUM_DATA_LANES 2 + +#define OV9282_REG_MIN 0x00 +#define OV9282_REG_MAX 0xfffff + +/** + * struct ov9282_reg - ov9282 sensor register + * @address: Register address + * @val: Register value + */ +struct ov9282_reg { + u16 address; + u8 val; +}; + +/** + * struct ov9282_reg_list - ov9282 sensor register list + * @num_of_regs: Number of registers in the list + * @regs: Pointer to register list + */ +struct ov9282_reg_list { + u32 num_of_regs; + const struct ov9282_reg *regs; +}; + +/** + * struct ov9282_mode - ov9282 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 ov9282_mode { + u32 width; + u32 height; + u32 code; + u32 hblank; + u32 vblank; + u32 vblank_min; + u32 vblank_max; + u64 pclk; + u32 link_freq_idx; + struct ov9282_reg_list reg_list; +}; + +/** + * struct ov9282 - ov9282 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 + * @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 + * @cur_mode: Pointer to current selected sensor mode + * @mutex: Mutex for serializing sensor controls + * @streaming: Flag indicating streaming state + */ +struct ov9282 { + struct device *dev; + struct i2c_client *client; + struct v4l2_subdev sd; + struct media_pad pad; + struct gpio_desc *reset_gpio; + 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; + const struct ov9282_mode *cur_mode; + struct mutex mutex; + bool streaming; +}; + +static const s64 link_freq[] = { + OV9282_LINK_FREQ, +}; + +/* Sensor mode registers */ +static const struct ov9282_reg mode_1280x720_regs[] = { + {0x0302, 0x32}, + {0x030d, 0x50}, + {0x030e, 0x02}, + {0x3001, 0x00}, + {0x3004, 0x00}, + {0x3005, 0x00}, + {0x3006, 0x04}, + {0x3011, 0x0a}, + {0x3013, 0x18}, + {0x301c, 0xf0}, + {0x3022, 0x01}, + {0x3030, 0x10}, + {0x3039, 0x32}, + {0x303a, 0x00}, + {0x3500, 0x00}, + {0x3501, 0x5f}, + {0x3502, 0x1e}, + {0x3503, 0x08}, + {0x3505, 0x8c}, + {0x3507, 0x03}, + {0x3508, 0x00}, + {0x3509, 0x10}, + {0x3610, 0x80}, + {0x3611, 0xa0}, + {0x3620, 0x6e}, + {0x3632, 0x56}, + {0x3633, 0x78}, + {0x3666, 0x00}, + {0x366f, 0x5a}, + {0x3680, 0x84}, + {0x3712, 0x80}, + {0x372d, 0x22}, + {0x3731, 0x80}, + {0x3732, 0x30}, + {0x3778, 0x00}, + {0x377d, 0x22}, + {0x3788, 0x02}, + {0x3789, 0xa4}, + {0x378a, 0x00}, + {0x378b, 0x4a}, + {0x3799, 0x20}, + {0x3800, 0x00}, + {0x3801, 0x00}, + {0x3802, 0x00}, + {0x3803, 0x00}, + {0x3804, 0x05}, + {0x3805, 0x0f}, + {0x3806, 0x02}, + {0x3807, 0xdf}, + {0x3808, 0x05}, + {0x3809, 0x00}, + {0x380a, 0x02}, + {0x380b, 0xd0}, + {0x380c, 0x05}, + {0x380d, 0xfa}, + {0x380e, 0x06}, + {0x380f, 0xce}, + {0x3810, 0x00}, + {0x3811, 0x08}, + {0x3812, 0x00}, + {0x3813, 0x08}, + {0x3814, 0x11}, + {0x3815, 0x11}, + {0x3820, 0x3c}, + {0x3821, 0x84}, + {0x3881, 0x42}, + {0x38a8, 0x02}, + {0x38a9, 0x80}, + {0x38b1, 0x00}, + {0x38c4, 0x00}, + {0x38c5, 0xc0}, + {0x38c6, 0x04}, + {0x38c7, 0x80}, + {0x3920, 0xff}, + {0x4003, 0x40}, + {0x4008, 0x02}, + {0x4009, 0x05}, + {0x400c, 0x00}, + {0x400d, 0x03}, + {0x4010, 0x40}, + {0x4043, 0x40}, + {0x4307, 0x30}, + {0x4317, 0x00}, + {0x4501, 0x00}, + {0x4507, 0x00}, + {0x4509, 0x80}, + {0x450a, 0x08}, + {0x4601, 0x04}, + {0x470f, 0x00}, + {0x4f07, 0x00}, + {0x4800, 0x20}, + {0x5000, 0x9f}, + {0x5001, 0x00}, + {0x5e00, 0x00}, + {0x5d00, 0x07}, + {0x5d01, 0x00}, + {0x0101, 0x01}, + {0x1000, 0x03}, + {0x5a08, 0x84}, +}; + +/* Supported sensor mode configurations */ +static const struct ov9282_mode supported_mode = { + .width = 1280, + .height = 720, + .hblank = 250, + .vblank = 1022, + .vblank_min = 151, + .vblank_max = 51540, + .pclk = 160000000, + .link_freq_idx = 0, + .code = MEDIA_BUS_FMT_Y10_1X10, + .reg_list = { + .num_of_regs = ARRAY_SIZE(mode_1280x720_regs), + .regs = mode_1280x720_regs, + }, +}; + +/** + * to_ov9282() - ov9282 V4L2 sub-device to ov9282 device. + * @subdev: pointer to ov9282 V4L2 sub-device + * + * Return: pointer to ov9282 device + */ +static inline struct ov9282 *to_ov9282(struct v4l2_subdev *subdev) +{ + return container_of(subdev, struct ov9282, sd); +} + +/** + * ov9282_read_reg() - Read registers. + * @ov9282: pointer to ov9282 device + * @reg: register address + * @len: length of bytes to read. Max supported bytes is 4 + * @val: pointer to register value to be filled. + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_read_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 *val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov9282->sd); + struct i2c_msg msgs[2] = {0}; + u8 addr_buf[2] = {0}; + u8 data_buf[4] = {0}; + int ret; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, addr_buf); + + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = ARRAY_SIZE(addr_buf); + msgs[0].buf = addr_buf; + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = &data_buf[4 - len]; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *val = get_unaligned_be32(data_buf); + + return 0; +} + +/** + * ov9282_write_reg() - Write register + * @ov9282: pointer to ov9282 device + * @reg: register address + * @len: length of bytes. Max supported bytes is 4 + * @val: register value + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_write_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov9282->sd); + u8 buf[6] = {0}; + + if (WARN_ON(len > 4)) + return -EINVAL; + + put_unaligned_be16(reg, buf); + put_unaligned_be32(val << (8 * (4 - len)), buf + 2); + if (i2c_master_send(client, buf, len + 2) != len + 2) + return -EIO; + + return 0; +} + +/** + * ov9282_write_regs() - Write a list of registers + * @ov9282: pointer to ov9282 device + * @regs: list of registers to be written + * @len: length of registers array + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_write_regs(struct ov9282 *ov9282, + const struct ov9282_reg *regs, u32 len) +{ + unsigned int i; + int ret; + + for (i = 0; i < len; i++) { + ret = ov9282_write_reg(ov9282, regs[i].address, 1, regs[i].val); + if (ret) + return ret; + } + + return 0; +} + +/** + * ov9282_update_controls() - Update control ranges based on streaming mode + * @ov9282: pointer to ov9282 device + * @mode: pointer to ov9282_mode sensor mode + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_update_controls(struct ov9282 *ov9282, + const struct ov9282_mode *mode) +{ + int ret; + + ret = __v4l2_ctrl_s_ctrl(ov9282->link_freq_ctrl, mode->link_freq_idx); + if (ret) + return ret; + + ret = __v4l2_ctrl_s_ctrl(ov9282->hblank_ctrl, mode->hblank); + if (ret) + return ret; + + return __v4l2_ctrl_modify_range(ov9282->vblank_ctrl, mode->vblank_min, + mode->vblank_max, 1, mode->vblank); +} + +/** + * ov9282_update_exp_gain() - Set updated exposure and gain + * @ov9282: pointer to ov9282 device + * @exposure: updated exposure value + * @gain: updated analog gain value + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_update_exp_gain(struct ov9282 *ov9282, u32 exposure, u32 gain) +{ + u32 lpfr; + int ret; + + lpfr = ov9282->vblank + ov9282->cur_mode->height; + + dev_dbg(ov9282->dev, "Set exp %u, analog gain %u, lpfr %u", + exposure, gain, lpfr); + + ret = ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 1); + if (ret) + return ret; + + ret = ov9282_write_reg(ov9282, OV9282_REG_LPFR, 2, lpfr); + if (ret) + goto error_release_group_hold; + + ret = ov9282_write_reg(ov9282, OV9282_REG_EXPOSURE, 3, exposure << 4); + if (ret) + goto error_release_group_hold; + + ret = ov9282_write_reg(ov9282, OV9282_REG_AGAIN, 1, gain); + +error_release_group_hold: + ov9282_write_reg(ov9282, OV9282_REG_HOLD, 1, 0); + + return ret; +} + +/** + * ov9282_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 ov9282_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ov9282 *ov9282 = + container_of(ctrl->handler, struct ov9282, ctrl_handler); + u32 analog_gain; + u32 exposure; + int ret; + + switch (ctrl->id) { + case V4L2_CID_VBLANK: + ov9282->vblank = ov9282->vblank_ctrl->val; + + dev_dbg(ov9282->dev, "Received vblank %u, new lpfr %u", + ov9282->vblank, + ov9282->vblank + ov9282->cur_mode->height); + + ret = __v4l2_ctrl_modify_range(ov9282->exp_ctrl, + OV9282_EXPOSURE_MIN, + ov9282->vblank + + ov9282->cur_mode->height - + OV9282_EXPOSURE_OFFSET, + 1, OV9282_EXPOSURE_DEFAULT); + break; + case V4L2_CID_EXPOSURE: + /* Set controls only if sensor is in power on state */ + if (!pm_runtime_get_if_in_use(ov9282->dev)) + return 0; + + exposure = ctrl->val; + analog_gain = ov9282->again_ctrl->val; + + dev_dbg(ov9282->dev, "Received exp %u, analog gain %u", + exposure, analog_gain); + + ret = ov9282_update_exp_gain(ov9282, exposure, analog_gain); + + pm_runtime_put(ov9282->dev); + + break; + default: + dev_err(ov9282->dev, "Invalid control %d", ctrl->id); + ret = -EINVAL; + } + + return ret; +} + +/* V4l2 subdevice control ops*/ +static const struct v4l2_ctrl_ops ov9282_ctrl_ops = { + .s_ctrl = ov9282_set_ctrl, +}; + +/** + * ov9282_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes + * @sd: pointer to ov9282 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 ov9282_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; +} + +/** + * ov9282_enum_frame_size() - Enumerate V4L2 sub-device frame sizes + * @sd: pointer to ov9282 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 ov9282_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; +} + +/** + * ov9282_fill_pad_format() - Fill subdevice pad format + * from selected sensor mode + * @ov9282: pointer to ov9282 device + * @mode: pointer to ov9282_mode sensor mode + * @fmt: V4L2 sub-device format need to be filled + */ +static void ov9282_fill_pad_format(struct ov9282 *ov9282, + const struct ov9282_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; +} + +/** + * ov9282_get_pad_format() - Get subdevice pad format + * @sd: pointer to ov9282 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 ov9282_get_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct ov9282 *ov9282 = to_ov9282(sd); + + mutex_lock(&ov9282->mutex); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *framefmt; + + framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); + fmt->format = *framefmt; + } else { + ov9282_fill_pad_format(ov9282, ov9282->cur_mode, fmt); + } + + mutex_unlock(&ov9282->mutex); + + return 0; +} + +/** + * ov9282_set_pad_format() - Set subdevice pad format + * @sd: pointer to ov9282 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 ov9282_set_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct ov9282 *ov9282 = to_ov9282(sd); + const struct ov9282_mode *mode; + int ret = 0; + + mutex_lock(&ov9282->mutex); + + mode = &supported_mode; + ov9282_fill_pad_format(ov9282, mode, fmt); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *framefmt; + + framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad); + *framefmt = fmt->format; + } else { + ret = ov9282_update_controls(ov9282, mode); + if (!ret) + ov9282->cur_mode = mode; + } + + mutex_unlock(&ov9282->mutex); + + return ret; +} + +/** + * ov9282_init_pad_cfg() - Initialize sub-device pad configuration + * @sd: pointer to ov9282 V4L2 sub-device structure + * @sd_state: V4L2 sub-device configuration + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_init_pad_cfg(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state) +{ + struct ov9282 *ov9282 = to_ov9282(sd); + struct v4l2_subdev_format fmt = { 0 }; + + fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + ov9282_fill_pad_format(ov9282, &supported_mode, &fmt); + + return ov9282_set_pad_format(sd, sd_state, &fmt); +} + +/** + * ov9282_start_streaming() - Start sensor stream + * @ov9282: pointer to ov9282 device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_start_streaming(struct ov9282 *ov9282) +{ + const struct ov9282_reg_list *reg_list; + int ret; + + /* Write sensor mode registers */ + reg_list = &ov9282->cur_mode->reg_list; + ret = ov9282_write_regs(ov9282, reg_list->regs, reg_list->num_of_regs); + if (ret) { + dev_err(ov9282->dev, "fail to write initial registers"); + return ret; + } + + /* Setup handler will write actual exposure and gain */ + ret = __v4l2_ctrl_handler_setup(ov9282->sd.ctrl_handler); + if (ret) { + dev_err(ov9282->dev, "fail to setup handler"); + return ret; + } + + /* Start streaming */ + ret = ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT, + 1, OV9282_MODE_STREAMING); + if (ret) { + dev_err(ov9282->dev, "fail to start streaming"); + return ret; + } + + return 0; +} + +/** + * ov9282_stop_streaming() - Stop sensor stream + * @ov9282: pointer to ov9282 device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_stop_streaming(struct ov9282 *ov9282) +{ + return ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT, + 1, OV9282_MODE_STANDBY); +} + +/** + * ov9282_set_stream() - Enable sensor streaming + * @sd: pointer to ov9282 subdevice + * @enable: set to enable sensor streaming + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct ov9282 *ov9282 = to_ov9282(sd); + int ret; + + mutex_lock(&ov9282->mutex); + + if (ov9282->streaming == enable) { + mutex_unlock(&ov9282->mutex); + return 0; + } + + if (enable) { + ret = pm_runtime_resume_and_get(ov9282->dev); + if (ret) + goto error_unlock; + + ret = ov9282_start_streaming(ov9282); + if (ret) + goto error_power_off; + } else { + ov9282_stop_streaming(ov9282); + pm_runtime_put(ov9282->dev); + } + + ov9282->streaming = enable; + + mutex_unlock(&ov9282->mutex); + + return 0; + +error_power_off: + pm_runtime_put(ov9282->dev); +error_unlock: + mutex_unlock(&ov9282->mutex); + + return ret; +} + +/** + * ov9282_detect() - Detect ov9282 sensor + * @ov9282: pointer to ov9282 device + * + * Return: 0 if successful, -EIO if sensor id does not match + */ +static int ov9282_detect(struct ov9282 *ov9282) +{ + int ret; + u32 val; + + ret = ov9282_read_reg(ov9282, OV9282_REG_ID, 2, &val); + if (ret) + return ret; + + if (val != OV9282_ID) { + dev_err(ov9282->dev, "chip id mismatch: %x!=%x", + OV9282_ID, val); + return -ENXIO; + } + + return 0; +} + +/** + * ov9282_parse_hw_config() - Parse HW configuration and check if supported + * @ov9282: pointer to ov9282 device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_parse_hw_config(struct ov9282 *ov9282) +{ + struct fwnode_handle *fwnode = dev_fwnode(ov9282->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 */ + ov9282->reset_gpio = devm_gpiod_get_optional(ov9282->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(ov9282->reset_gpio)) { + dev_err(ov9282->dev, "failed to get reset gpio %ld", + PTR_ERR(ov9282->reset_gpio)); + return PTR_ERR(ov9282->reset_gpio); + } + + /* Get sensor input clock */ + ov9282->inclk = devm_clk_get(ov9282->dev, NULL); + if (IS_ERR(ov9282->inclk)) { + dev_err(ov9282->dev, "could not get inclk"); + return PTR_ERR(ov9282->inclk); + } + + rate = clk_get_rate(ov9282->inclk); + if (rate != OV9282_INCLK_RATE) { + dev_err(ov9282->dev, "inclk frequency mismatch"); + return -EINVAL; + } + + 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 != OV9282_NUM_DATA_LANES) { + dev_err(ov9282->dev, + "number of CSI2 data lanes %d is not supported", + bus_cfg.bus.mipi_csi2.num_data_lanes); + ret = -EINVAL; + goto done_endpoint_free; + } + + if (!bus_cfg.nr_of_link_frequencies) { + dev_err(ov9282->dev, "no link frequencies defined"); + ret = -EINVAL; + goto done_endpoint_free; + } + + for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) + if (bus_cfg.link_frequencies[i] == OV9282_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 ov9282_video_ops = { + .s_stream = ov9282_set_stream, +}; + +static const struct v4l2_subdev_pad_ops ov9282_pad_ops = { + .init_cfg = ov9282_init_pad_cfg, + .enum_mbus_code = ov9282_enum_mbus_code, + .enum_frame_size = ov9282_enum_frame_size, + .get_fmt = ov9282_get_pad_format, + .set_fmt = ov9282_set_pad_format, +}; + +static const struct v4l2_subdev_ops ov9282_subdev_ops = { + .video = &ov9282_video_ops, + .pad = &ov9282_pad_ops, +}; + +/** + * ov9282_power_on() - Sensor power on sequence + * @dev: pointer to i2c device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct ov9282 *ov9282 = to_ov9282(sd); + int ret; + + usleep_range(400, 600); + + gpiod_set_value_cansleep(ov9282->reset_gpio, 1); + + ret = clk_prepare_enable(ov9282->inclk); + if (ret) { + dev_err(ov9282->dev, "fail to enable inclk"); + goto error_reset; + } + + usleep_range(400, 600); + + return 0; + +error_reset: + gpiod_set_value_cansleep(ov9282->reset_gpio, 0); + + return ret; +} + +/** + * ov9282_power_off() - Sensor power off sequence + * @dev: pointer to i2c device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct ov9282 *ov9282 = to_ov9282(sd); + + gpiod_set_value_cansleep(ov9282->reset_gpio, 0); + + clk_disable_unprepare(ov9282->inclk); + + return 0; +} + +/** + * ov9282_init_controls() - Initialize sensor subdevice controls + * @ov9282: pointer to ov9282 device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_init_controls(struct ov9282 *ov9282) +{ + struct v4l2_ctrl_handler *ctrl_hdlr = &ov9282->ctrl_handler; + const struct ov9282_mode *mode = ov9282->cur_mode; + u32 lpfr; + int ret; + + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6); + if (ret) + return ret; + + /* Serialize controls with sensor device */ + ctrl_hdlr->lock = &ov9282->mutex; + + /* Initialize exposure and gain */ + lpfr = mode->vblank + mode->height; + ov9282->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_EXPOSURE, + OV9282_EXPOSURE_MIN, + lpfr - OV9282_EXPOSURE_OFFSET, + OV9282_EXPOSURE_STEP, + OV9282_EXPOSURE_DEFAULT); + + ov9282->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, + OV9282_AGAIN_MIN, + OV9282_AGAIN_MAX, + OV9282_AGAIN_STEP, + OV9282_AGAIN_DEFAULT); + + v4l2_ctrl_cluster(2, &ov9282->exp_ctrl); + + ov9282->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_VBLANK, + mode->vblank_min, + mode->vblank_max, + 1, mode->vblank); + + /* Read only controls */ + ov9282->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_PIXEL_RATE, + mode->pclk, mode->pclk, + 1, mode->pclk); + + ov9282->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq) - + 1, + mode->link_freq_idx, + link_freq); + if (ov9282->link_freq_ctrl) + ov9282->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + ov9282->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, + &ov9282_ctrl_ops, + V4L2_CID_HBLANK, + OV9282_REG_MIN, + OV9282_REG_MAX, + 1, mode->hblank); + if (ov9282->hblank_ctrl) + ov9282->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + if (ctrl_hdlr->error) { + dev_err(ov9282->dev, "control init failed: %d", + ctrl_hdlr->error); + v4l2_ctrl_handler_free(ctrl_hdlr); + return ctrl_hdlr->error; + } + + ov9282->sd.ctrl_handler = ctrl_hdlr; + + return 0; +} + +/** + * ov9282_probe() - I2C client device binding + * @client: pointer to i2c client device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_probe(struct i2c_client *client) +{ + struct ov9282 *ov9282; + int ret; + + ov9282 = devm_kzalloc(&client->dev, sizeof(*ov9282), GFP_KERNEL); + if (!ov9282) + return -ENOMEM; + + ov9282->dev = &client->dev; + + /* Initialize subdev */ + v4l2_i2c_subdev_init(&ov9282->sd, client, &ov9282_subdev_ops); + + ret = ov9282_parse_hw_config(ov9282); + if (ret) { + dev_err(ov9282->dev, "HW configuration is not supported"); + return ret; + } + + mutex_init(&ov9282->mutex); + + ret = ov9282_power_on(ov9282->dev); + if (ret) { + dev_err(ov9282->dev, "failed to power-on the sensor"); + goto error_mutex_destroy; + } + + /* Check module identity */ + ret = ov9282_detect(ov9282); + if (ret) { + dev_err(ov9282->dev, "failed to find sensor: %d", ret); + goto error_power_off; + } + + /* Set default mode to max resolution */ + ov9282->cur_mode = &supported_mode; + ov9282->vblank = ov9282->cur_mode->vblank; + + ret = ov9282_init_controls(ov9282); + if (ret) { + dev_err(ov9282->dev, "failed to init controls: %d", ret); + goto error_power_off; + } + + /* Initialize subdev */ + ov9282->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + ov9282->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + /* Initialize source pad */ + ov9282->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_pads_init(&ov9282->sd.entity, 1, &ov9282->pad); + if (ret) { + dev_err(ov9282->dev, "failed to init entity pads: %d", ret); + goto error_handler_free; + } + + ret = v4l2_async_register_subdev_sensor(&ov9282->sd); + if (ret < 0) { + dev_err(ov9282->dev, + "failed to register async subdev: %d", ret); + goto error_media_entity; + } + + pm_runtime_set_active(ov9282->dev); + pm_runtime_enable(ov9282->dev); + pm_runtime_idle(ov9282->dev); + + return 0; + +error_media_entity: + media_entity_cleanup(&ov9282->sd.entity); +error_handler_free: + v4l2_ctrl_handler_free(ov9282->sd.ctrl_handler); +error_power_off: + ov9282_power_off(ov9282->dev); +error_mutex_destroy: + mutex_destroy(&ov9282->mutex); + + return ret; +} + +/** + * ov9282_remove() - I2C client device unbinding + * @client: pointer to I2C client device + * + * Return: 0 if successful, error code otherwise. + */ +static int ov9282_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov9282 *ov9282 = to_ov9282(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)) + ov9282_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); + + mutex_destroy(&ov9282->mutex); + + return 0; +} + +static const struct dev_pm_ops ov9282_pm_ops = { + SET_RUNTIME_PM_OPS(ov9282_power_off, ov9282_power_on, NULL) +}; + +static const struct of_device_id ov9282_of_match[] = { + { .compatible = "ovti,ov9282" }, + { } +}; + +MODULE_DEVICE_TABLE(of, ov9282_of_match); + +static struct i2c_driver ov9282_driver = { + .probe_new = ov9282_probe, + .remove = ov9282_remove, + .driver = { + .name = "ov9282", + .pm = &ov9282_pm_ops, + .of_match_table = ov9282_of_match, + }, +}; + +module_i2c_driver(ov9282_driver); + +MODULE_DESCRIPTION("OmniVision ov9282 sensor driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3