diff options
Diffstat (limited to 'drivers/media/i2c/imx214.c')
| -rw-r--r-- | drivers/media/i2c/imx214.c | 1118 |
1 files changed, 1118 insertions, 0 deletions
diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c new file mode 100644 index 000000000000..ec3d1b855f62 --- /dev/null +++ b/drivers/media/i2c/imx214.c @@ -0,0 +1,1118 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * imx214.c - imx214 sensor driver + * + * Copyright 2018 Qtechnology A/S + * + * Ricardo Ribalda <ricardo.ribalda@gmail.com> + */ +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <media/media-entity.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-subdev.h> + +#define IMX214_DEFAULT_CLK_FREQ 24000000 +#define IMX214_DEFAULT_LINK_FREQ 480000000 +#define IMX214_DEFAULT_PIXEL_RATE ((IMX214_DEFAULT_LINK_FREQ * 8LL) / 10) +#define IMX214_FPS 30 +#define IMX214_MBUS_CODE MEDIA_BUS_FMT_SRGGB10_1X10 + +static const char * const imx214_supply_name[] = { + "vdda", + "vddd", + "vdddo", +}; + +#define IMX214_NUM_SUPPLIES ARRAY_SIZE(imx214_supply_name) + +struct imx214 { + struct device *dev; + struct clk *xclk; + struct regmap *regmap; + + struct v4l2_subdev sd; + struct media_pad pad; + struct v4l2_mbus_framefmt fmt; + struct v4l2_rect crop; + + struct v4l2_ctrl_handler ctrls; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *exposure; + + struct regulator_bulk_data supplies[IMX214_NUM_SUPPLIES]; + + struct gpio_desc *enable_gpio; + + /* + * Serialize control access, get/set format, get selection + * and start streaming. + */ + struct mutex mutex; + + bool streaming; +}; + +struct reg_8 { + u16 addr; + u8 val; +}; + +enum { + IMX214_TABLE_WAIT_MS = 0, + IMX214_TABLE_END, + IMX214_MAX_RETRIES, + IMX214_WAIT_MS +}; + +/*From imx214_mode_tbls.h*/ +static const struct reg_8 mode_4096x2304[] = { + {0x0114, 0x03}, + {0x0220, 0x00}, + {0x0221, 0x11}, + {0x0222, 0x01}, + {0x0340, 0x0C}, + {0x0341, 0x7A}, + {0x0342, 0x13}, + {0x0343, 0x90}, + {0x0344, 0x00}, + {0x0345, 0x38}, + {0x0346, 0x01}, + {0x0347, 0x98}, + {0x0348, 0x10}, + {0x0349, 0x37}, + {0x034A, 0x0A}, + {0x034B, 0x97}, + {0x0381, 0x01}, + {0x0383, 0x01}, + {0x0385, 0x01}, + {0x0387, 0x01}, + {0x0900, 0x00}, + {0x0901, 0x00}, + {0x0902, 0x00}, + {0x3000, 0x35}, + {0x3054, 0x01}, + {0x305C, 0x11}, + + {0x0112, 0x0A}, + {0x0113, 0x0A}, + {0x034C, 0x10}, + {0x034D, 0x00}, + {0x034E, 0x09}, + {0x034F, 0x00}, + {0x0401, 0x00}, + {0x0404, 0x00}, + {0x0405, 0x10}, + {0x0408, 0x00}, + {0x0409, 0x00}, + {0x040A, 0x00}, + {0x040B, 0x00}, + {0x040C, 0x10}, + {0x040D, 0x00}, + {0x040E, 0x09}, + {0x040F, 0x00}, + + {0x0301, 0x05}, + {0x0303, 0x02}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x96}, + {0x0309, 0x0A}, + {0x030B, 0x01}, + {0x0310, 0x00}, + + {0x0820, 0x12}, + {0x0821, 0xC0}, + {0x0822, 0x00}, + {0x0823, 0x00}, + + {0x3A03, 0x09}, + {0x3A04, 0x50}, + {0x3A05, 0x01}, + + {0x0B06, 0x01}, + {0x30A2, 0x00}, + + {0x30B4, 0x00}, + + {0x3A02, 0xFF}, + + {0x3011, 0x00}, + {0x3013, 0x01}, + + {0x0202, 0x0C}, + {0x0203, 0x70}, + {0x0224, 0x01}, + {0x0225, 0xF4}, + + {0x0204, 0x00}, + {0x0205, 0x00}, + {0x020E, 0x01}, + {0x020F, 0x00}, + {0x0210, 0x01}, + {0x0211, 0x00}, + {0x0212, 0x01}, + {0x0213, 0x00}, + {0x0214, 0x01}, + {0x0215, 0x00}, + {0x0216, 0x00}, + {0x0217, 0x00}, + + {0x4170, 0x00}, + {0x4171, 0x10}, + {0x4176, 0x00}, + {0x4177, 0x3C}, + {0xAE20, 0x04}, + {0xAE21, 0x5C}, + + {IMX214_TABLE_WAIT_MS, 10}, + {0x0138, 0x01}, + {IMX214_TABLE_END, 0x00} +}; + +static const struct reg_8 mode_1920x1080[] = { + {0x0114, 0x03}, + {0x0220, 0x00}, + {0x0221, 0x11}, + {0x0222, 0x01}, + {0x0340, 0x0C}, + {0x0341, 0x7A}, + {0x0342, 0x13}, + {0x0343, 0x90}, + {0x0344, 0x04}, + {0x0345, 0x78}, + {0x0346, 0x03}, + {0x0347, 0xFC}, + {0x0348, 0x0B}, + {0x0349, 0xF7}, + {0x034A, 0x08}, + {0x034B, 0x33}, + {0x0381, 0x01}, + {0x0383, 0x01}, + {0x0385, 0x01}, + {0x0387, 0x01}, + {0x0900, 0x00}, + {0x0901, 0x00}, + {0x0902, 0x00}, + {0x3000, 0x35}, + {0x3054, 0x01}, + {0x305C, 0x11}, + + {0x0112, 0x0A}, + {0x0113, 0x0A}, + {0x034C, 0x07}, + {0x034D, 0x80}, + {0x034E, 0x04}, + {0x034F, 0x38}, + {0x0401, 0x00}, + {0x0404, 0x00}, + {0x0405, 0x10}, + {0x0408, 0x00}, + {0x0409, 0x00}, + {0x040A, 0x00}, + {0x040B, 0x00}, + {0x040C, 0x07}, + {0x040D, 0x80}, + {0x040E, 0x04}, + {0x040F, 0x38}, + + {0x0301, 0x05}, + {0x0303, 0x02}, + {0x0305, 0x03}, + {0x0306, 0x00}, + {0x0307, 0x96}, + {0x0309, 0x0A}, + {0x030B, 0x01}, + {0x0310, 0x00}, + + {0x0820, 0x12}, + {0x0821, 0xC0}, + {0x0822, 0x00}, + {0x0823, 0x00}, + + {0x3A03, 0x04}, + {0x3A04, 0xF8}, + {0x3A05, 0x02}, + + {0x0B06, 0x01}, + {0x30A2, 0x00}, + + {0x30B4, 0x00}, + + {0x3A02, 0xFF}, + + {0x3011, 0x00}, + {0x3013, 0x01}, + + {0x0202, 0x0C}, + {0x0203, 0x70}, + {0x0224, 0x01}, + {0x0225, 0xF4}, + + {0x0204, 0x00}, + {0x0205, 0x00}, + {0x020E, 0x01}, + {0x020F, 0x00}, + {0x0210, 0x01}, + {0x0211, 0x00}, + {0x0212, 0x01}, + {0x0213, 0x00}, + {0x0214, 0x01}, + {0x0215, 0x00}, + {0x0216, 0x00}, + {0x0217, 0x00}, + + {0x4170, 0x00}, + {0x4171, 0x10}, + {0x4176, 0x00}, + {0x4177, 0x3C}, + {0xAE20, 0x04}, + {0xAE21, 0x5C}, + + {IMX214_TABLE_WAIT_MS, 10}, + {0x0138, 0x01}, + {IMX214_TABLE_END, 0x00} +}; + +static const struct reg_8 mode_table_common[] = { + /* software reset */ + + /* software standby settings */ + {0x0100, 0x00}, + + /* ATR setting */ + {0x9300, 0x02}, + + /* external clock setting */ + {0x0136, 0x18}, + {0x0137, 0x00}, + + /* global setting */ + /* basic config */ + {0x0101, 0x00}, + {0x0105, 0x01}, + {0x0106, 0x01}, + {0x4550, 0x02}, + {0x4601, 0x00}, + {0x4642, 0x05}, + {0x6227, 0x11}, + {0x6276, 0x00}, + {0x900E, 0x06}, + {0xA802, 0x90}, + {0xA803, 0x11}, + {0xA804, 0x62}, + {0xA805, 0x77}, + {0xA806, 0xAE}, + {0xA807, 0x34}, + {0xA808, 0xAE}, + {0xA809, 0x35}, + {0xA80A, 0x62}, + {0xA80B, 0x83}, + {0xAE33, 0x00}, + + /* analog setting */ + {0x4174, 0x00}, + {0x4175, 0x11}, + {0x4612, 0x29}, + {0x461B, 0x12}, + {0x461F, 0x06}, + {0x4635, 0x07}, + {0x4637, 0x30}, + {0x463F, 0x18}, + {0x4641, 0x0D}, + {0x465B, 0x12}, + {0x465F, 0x11}, + {0x4663, 0x11}, + {0x4667, 0x0F}, + {0x466F, 0x0F}, + {0x470E, 0x09}, + {0x4909, 0xAB}, + {0x490B, 0x95}, + {0x4915, 0x5D}, + {0x4A5F, 0xFF}, + {0x4A61, 0xFF}, + {0x4A73, 0x62}, + {0x4A85, 0x00}, + {0x4A87, 0xFF}, + + /* embedded data */ + {0x5041, 0x04}, + {0x583C, 0x04}, + {0x620E, 0x04}, + {0x6EB2, 0x01}, + {0x6EB3, 0x00}, + {0x9300, 0x02}, + + /* imagequality */ + /* HDR setting */ + {0x3001, 0x07}, + {0x6D12, 0x3F}, + {0x6D13, 0xFF}, + {0x9344, 0x03}, + {0x9706, 0x10}, + {0x9707, 0x03}, + {0x9708, 0x03}, + {0x9E04, 0x01}, + {0x9E05, 0x00}, + {0x9E0C, 0x01}, + {0x9E0D, 0x02}, + {0x9E24, 0x00}, + {0x9E25, 0x8C}, + {0x9E26, 0x00}, + {0x9E27, 0x94}, + {0x9E28, 0x00}, + {0x9E29, 0x96}, + + /* CNR parameter setting */ + {0x69DB, 0x01}, + + /* Moire reduction */ + {0x6957, 0x01}, + + /* image enhancment */ + {0x6987, 0x17}, + {0x698A, 0x03}, + {0x698B, 0x03}, + + /* white balanace */ + {0x0B8E, 0x01}, + {0x0B8F, 0x00}, + {0x0B90, 0x01}, + {0x0B91, 0x00}, + {0x0B92, 0x01}, + {0x0B93, 0x00}, + {0x0B94, 0x01}, + {0x0B95, 0x00}, + + /* ATR setting */ + {0x6E50, 0x00}, + {0x6E51, 0x32}, + {0x9340, 0x00}, + {0x9341, 0x3C}, + {0x9342, 0x03}, + {0x9343, 0xFF}, + {IMX214_TABLE_END, 0x00} +}; + +/* + * Declare modes in order, from biggest + * to smallest height. + */ +static const struct imx214_mode { + u32 width; + u32 height; + const struct reg_8 *reg_table; +} imx214_modes[] = { + { + .width = 4096, + .height = 2304, + .reg_table = mode_4096x2304, + }, + { + .width = 1920, + .height = 1080, + .reg_table = mode_1920x1080, + }, +}; + +static inline struct imx214 *to_imx214(struct v4l2_subdev *sd) +{ + return container_of(sd, struct imx214, sd); +} + +static int __maybe_unused imx214_power_on(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx214 *imx214 = to_imx214(sd); + int ret; + + ret = regulator_bulk_enable(IMX214_NUM_SUPPLIES, imx214->supplies); + if (ret < 0) { + dev_err(imx214->dev, "failed to enable regulators: %d\n", ret); + return ret; + } + + usleep_range(2000, 3000); + + ret = clk_prepare_enable(imx214->xclk); + if (ret < 0) { + regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies); + dev_err(imx214->dev, "clk prepare enable failed\n"); + return ret; + } + + gpiod_set_value_cansleep(imx214->enable_gpio, 1); + usleep_range(12000, 15000); + + return 0; +} + +static int __maybe_unused imx214_power_off(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx214 *imx214 = to_imx214(sd); + + gpiod_set_value_cansleep(imx214->enable_gpio, 0); + + clk_disable_unprepare(imx214->xclk); + + regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies); + usleep_range(10, 20); + + return 0; +} + +static int imx214_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index > 0) + return -EINVAL; + + code->code = IMX214_MBUS_CODE; + + return 0; +} + +static int imx214_enum_frame_size(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + if (fse->code != IMX214_MBUS_CODE) + return -EINVAL; + + if (fse->index >= ARRAY_SIZE(imx214_modes)) + return -EINVAL; + + fse->min_width = fse->max_width = imx214_modes[fse->index].width; + fse->min_height = fse->max_height = imx214_modes[fse->index].height; + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int imx214_s_register(struct v4l2_subdev *subdev, + const struct v4l2_dbg_register *reg) +{ + struct imx214 *imx214 = container_of(subdev, struct imx214, sd); + + return regmap_write(imx214->regmap, reg->reg, reg->val); +} + +static int imx214_g_register(struct v4l2_subdev *subdev, + struct v4l2_dbg_register *reg) +{ + struct imx214 *imx214 = container_of(subdev, struct imx214, sd); + unsigned int aux; + int ret; + + reg->size = 1; + ret = regmap_read(imx214->regmap, reg->reg, &aux); + reg->val = aux; + + return ret; +} +#endif + +static const struct v4l2_subdev_core_ops imx214_core_ops = { +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = imx214_g_register, + .s_register = imx214_s_register, +#endif +}; + +static struct v4l2_mbus_framefmt * +__imx214_get_pad_format(struct imx214 *imx214, + struct v4l2_subdev_pad_config *cfg, + unsigned int pad, + enum v4l2_subdev_format_whence which) +{ + switch (which) { + case V4L2_SUBDEV_FORMAT_TRY: + return v4l2_subdev_get_try_format(&imx214->sd, cfg, pad); + case V4L2_SUBDEV_FORMAT_ACTIVE: + return &imx214->fmt; + default: + return NULL; + } +} + +static int imx214_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct imx214 *imx214 = to_imx214(sd); + + mutex_lock(&imx214->mutex); + format->format = *__imx214_get_pad_format(imx214, cfg, format->pad, + format->which); + mutex_unlock(&imx214->mutex); + + return 0; +} + +static struct v4l2_rect * +__imx214_get_pad_crop(struct imx214 *imx214, struct v4l2_subdev_pad_config *cfg, + unsigned int pad, enum v4l2_subdev_format_whence which) +{ + switch (which) { + case V4L2_SUBDEV_FORMAT_TRY: + return v4l2_subdev_get_try_crop(&imx214->sd, cfg, pad); + case V4L2_SUBDEV_FORMAT_ACTIVE: + return &imx214->crop; + default: + return NULL; + } +} + +static int imx214_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct imx214 *imx214 = to_imx214(sd); + struct v4l2_mbus_framefmt *__format; + struct v4l2_rect *__crop; + const struct imx214_mode *mode; + + mutex_lock(&imx214->mutex); + + __crop = __imx214_get_pad_crop(imx214, cfg, format->pad, format->which); + + if (format) + mode = v4l2_find_nearest_size(imx214_modes, + ARRAY_SIZE(imx214_modes), width, height, + format->format.width, format->format.height); + else + mode = &imx214_modes[0]; + + __crop->width = mode->width; + __crop->height = mode->height; + + __format = __imx214_get_pad_format(imx214, cfg, format->pad, + format->which); + __format->width = __crop->width; + __format->height = __crop->height; + __format->code = IMX214_MBUS_CODE; + __format->field = V4L2_FIELD_NONE; + __format->colorspace = V4L2_COLORSPACE_SRGB; + __format->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(__format->colorspace); + __format->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, + __format->colorspace, __format->ycbcr_enc); + __format->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(__format->colorspace); + + format->format = *__format; + + mutex_unlock(&imx214->mutex); + + return 0; +} + +static int imx214_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct imx214 *imx214 = to_imx214(sd); + + if (sel->target != V4L2_SEL_TGT_CROP) + return -EINVAL; + + mutex_lock(&imx214->mutex); + sel->r = *__imx214_get_pad_crop(imx214, cfg, sel->pad, + sel->which); + mutex_unlock(&imx214->mutex); + return 0; +} + +static int imx214_entity_init_cfg(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg) +{ + struct v4l2_subdev_format fmt = { }; + + fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.format.width = imx214_modes[0].width; + fmt.format.height = imx214_modes[0].height; + + imx214_set_format(subdev, cfg, &fmt); + + return 0; +} + +static int imx214_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imx214 *imx214 = container_of(ctrl->handler, + struct imx214, ctrls); + u8 vals[2]; + int ret; + + /* + * Applying V4L2 control value only happens + * when power is up for streaming + */ + if (!pm_runtime_get_if_in_use(imx214->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + vals[1] = ctrl->val; + vals[0] = ctrl->val >> 8; + ret = regmap_bulk_write(imx214->regmap, 0x202, vals, 2); + if (ret < 0) + dev_err(imx214->dev, "Error %d\n", ret); + ret = 0; + break; + + default: + ret = -EINVAL; + } + + pm_runtime_put(imx214->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops imx214_ctrl_ops = { + .s_ctrl = imx214_set_ctrl, +}; + +#define MAX_CMD 4 +static int imx214_write_table(struct imx214 *imx214, + const struct reg_8 table[]) +{ + u8 vals[MAX_CMD]; + int i; + int ret; + + for (; table->addr != IMX214_TABLE_END ; table++) { + if (table->addr == IMX214_TABLE_WAIT_MS) { + usleep_range(table->val * 1000, + table->val * 1000 + 500); + continue; + } + + for (i = 0; i < MAX_CMD; i++) { + if (table[i].addr != (table[0].addr + i)) + break; + vals[i] = table[i].val; + } + + ret = regmap_bulk_write(imx214->regmap, table->addr, vals, i); + + if (ret) { + dev_err(imx214->dev, "write_table error: %d\n", ret); + return ret; + } + + table += i - 1; + } + + return 0; +} + +static int imx214_start_streaming(struct imx214 *imx214) +{ + const struct imx214_mode *mode; + int ret; + + mutex_lock(&imx214->mutex); + ret = imx214_write_table(imx214, mode_table_common); + if (ret < 0) { + dev_err(imx214->dev, "could not sent common table %d\n", ret); + goto error; + } + + mode = v4l2_find_nearest_size(imx214_modes, + ARRAY_SIZE(imx214_modes), width, height, + imx214->fmt.width, imx214->fmt.height); + ret = imx214_write_table(imx214, mode->reg_table); + if (ret < 0) { + dev_err(imx214->dev, "could not sent mode table %d\n", ret); + goto error; + } + ret = __v4l2_ctrl_handler_setup(&imx214->ctrls); + if (ret < 0) { + dev_err(imx214->dev, "could not sync v4l2 controls\n"); + goto error; + } + ret = regmap_write(imx214->regmap, 0x100, 1); + if (ret < 0) { + dev_err(imx214->dev, "could not sent start table %d\n", ret); + goto error; + } + + mutex_unlock(&imx214->mutex); + return 0; + +error: + mutex_unlock(&imx214->mutex); + return ret; +} + +static int imx214_stop_streaming(struct imx214 *imx214) +{ + int ret; + + ret = regmap_write(imx214->regmap, 0x100, 0); + if (ret < 0) + dev_err(imx214->dev, "could not sent stop table %d\n", ret); + + return ret; +} + +static int imx214_s_stream(struct v4l2_subdev *subdev, int enable) +{ + struct imx214 *imx214 = to_imx214(subdev); + int ret; + + if (imx214->streaming == enable) + return 0; + + if (enable) { + ret = pm_runtime_get_sync(imx214->dev); + if (ret < 0) { + pm_runtime_put_noidle(imx214->dev); + return ret; + } + + ret = imx214_start_streaming(imx214); + if (ret < 0) + goto err_rpm_put; + } else { + ret = imx214_start_streaming(imx214); + if (ret < 0) + goto err_rpm_put; + pm_runtime_put(imx214->dev); + } + + imx214->streaming = enable; + return 0; + +err_rpm_put: + pm_runtime_put(imx214->dev); + return ret; +} + +static int imx214_g_frame_interval(struct v4l2_subdev *subdev, + struct v4l2_subdev_frame_interval *fival) +{ + fival->pad = 0; + fival->interval.numerator = 1; + fival->interval.denominator = IMX214_FPS; + + return 0; +} + +static int imx214_enum_frame_interval(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_interval_enum *fie) +{ + const struct imx214_mode *mode; + + if (fie->index != 0) + return -EINVAL; + + mode = v4l2_find_nearest_size(imx214_modes, + ARRAY_SIZE(imx214_modes), width, height, + fie->width, fie->height); + + fie->code = IMX214_MBUS_CODE; + fie->width = mode->width; + fie->height = mode->height; + fie->interval.numerator = 1; + fie->interval.denominator = IMX214_FPS; + + return 0; +} + +static const struct v4l2_subdev_video_ops imx214_video_ops = { + .s_stream = imx214_s_stream, + .g_frame_interval = imx214_g_frame_interval, + .s_frame_interval = imx214_g_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops imx214_subdev_pad_ops = { + .enum_mbus_code = imx214_enum_mbus_code, + .enum_frame_size = imx214_enum_frame_size, + .enum_frame_interval = imx214_enum_frame_interval, + .get_fmt = imx214_get_format, + .set_fmt = imx214_set_format, + .get_selection = imx214_get_selection, + .init_cfg = imx214_entity_init_cfg, +}; + +static const struct v4l2_subdev_ops imx214_subdev_ops = { + .core = &imx214_core_ops, + .video = &imx214_video_ops, + .pad = &imx214_subdev_pad_ops, +}; + +static const struct regmap_config sensor_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .cache_type = REGCACHE_RBTREE, +}; + +static int imx214_get_regulators(struct device *dev, struct imx214 *imx214) +{ + unsigned int i; + + for (i = 0; i < IMX214_NUM_SUPPLIES; i++) + imx214->supplies[i].supply = imx214_supply_name[i]; + + return devm_regulator_bulk_get(dev, IMX214_NUM_SUPPLIES, + imx214->supplies); +} + +static int imx214_parse_fwnode(struct device *dev) +{ + struct fwnode_handle *endpoint; + struct v4l2_fwnode_endpoint bus_cfg = { + .bus_type = V4L2_MBUS_CSI2_DPHY, + }; + unsigned int i; + int ret; + + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); + if (!endpoint) { + dev_err(dev, "endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg); + if (ret) { + dev_err(dev, "parsing endpoint node failed\n"); + goto done; + } + + for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) + if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ) + break; + + if (i == bus_cfg.nr_of_link_frequencies) { + dev_err(dev, "link-frequencies %d not supported, Please review your DT\n", + IMX214_DEFAULT_LINK_FREQ); + ret = -EINVAL; + goto done; + } + +done: + v4l2_fwnode_endpoint_free(&bus_cfg); + fwnode_handle_put(endpoint); + return ret; +} + +static int __maybe_unused imx214_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx214 *imx214 = to_imx214(sd); + + if (imx214->streaming) + imx214_stop_streaming(imx214); + + return 0; +} + +static int __maybe_unused imx214_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx214 *imx214 = to_imx214(sd); + int ret; + + if (imx214->streaming) { + ret = imx214_start_streaming(imx214); + if (ret) + goto error; + } + + return 0; + +error: + imx214_stop_streaming(imx214); + imx214->streaming = 0; + return ret; +} + +static int imx214_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct imx214 *imx214; + static const s64 link_freq[] = { + IMX214_DEFAULT_LINK_FREQ, + }; + int ret; + + ret = imx214_parse_fwnode(dev); + if (ret) + return ret; + + imx214 = devm_kzalloc(dev, sizeof(*imx214), GFP_KERNEL); + if (!imx214) + return -ENOMEM; + + imx214->dev = dev; + + imx214->xclk = devm_clk_get(dev, NULL); + if (IS_ERR(imx214->xclk)) { + dev_err(dev, "could not get xclk"); + return PTR_ERR(imx214->xclk); + } + + ret = clk_set_rate(imx214->xclk, IMX214_DEFAULT_CLK_FREQ); + if (ret) { + dev_err(dev, "could not set xclk frequency\n"); + return ret; + } + + ret = imx214_get_regulators(dev, imx214); + if (ret < 0) { + dev_err(dev, "cannot get regulators\n"); + return ret; + } + + imx214->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(imx214->enable_gpio)) { + dev_err(dev, "cannot get enable gpio\n"); + return PTR_ERR(imx214->enable_gpio); + } + + imx214->regmap = devm_regmap_init_i2c(client, &sensor_regmap_config); + if (IS_ERR(imx214->regmap)) { + dev_err(dev, "regmap init failed\n"); + return PTR_ERR(imx214->regmap); + } + + v4l2_i2c_subdev_init(&imx214->sd, client, &imx214_subdev_ops); + + /* + * Enable power initially, to avoid warnings + * from clk_disable on power_off + */ + imx214_power_on(imx214->dev); + + pm_runtime_set_active(imx214->dev); + pm_runtime_enable(imx214->dev); + pm_runtime_idle(imx214->dev); + + v4l2_ctrl_handler_init(&imx214->ctrls, 3); + + imx214->pixel_rate = v4l2_ctrl_new_std(&imx214->ctrls, NULL, + V4L2_CID_PIXEL_RATE, 0, + IMX214_DEFAULT_PIXEL_RATE, 1, + IMX214_DEFAULT_PIXEL_RATE); + imx214->link_freq = v4l2_ctrl_new_int_menu(&imx214->ctrls, NULL, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq) - 1, + 0, link_freq); + if (imx214->link_freq) + imx214->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + /* + * WARNING! + * Values obtained reverse engineering blobs and/or devices. + * Ranges and functionality might be wrong. + * + * Sony, please release some register set documentation for the + * device. + * + * Yours sincerely, Ricardo. + */ + imx214->exposure = v4l2_ctrl_new_std(&imx214->ctrls, &imx214_ctrl_ops, + V4L2_CID_EXPOSURE, + 0, 3184, 1, 0x0c70); + + ret = imx214->ctrls.error; + if (ret) { + dev_err(&client->dev, "%s control init failed (%d)\n", + __func__, ret); + goto free_ctrl; + } + + imx214->sd.ctrl_handler = &imx214->ctrls; + mutex_init(&imx214->mutex); + imx214->ctrls.lock = &imx214->mutex; + + imx214->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + imx214->pad.flags = MEDIA_PAD_FL_SOURCE; + imx214->sd.dev = &client->dev; + imx214->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + ret = media_entity_pads_init(&imx214->sd.entity, 1, &imx214->pad); + if (ret < 0) { + dev_err(dev, "could not register media entity\n"); + goto free_ctrl; + } + + imx214_entity_init_cfg(&imx214->sd, NULL); + + ret = v4l2_async_register_subdev_sensor_common(&imx214->sd); + if (ret < 0) { + dev_err(dev, "could not register v4l2 device\n"); + goto free_entity; + } + + return 0; + +free_entity: + media_entity_cleanup(&imx214->sd.entity); +free_ctrl: + mutex_destroy(&imx214->mutex); + v4l2_ctrl_handler_free(&imx214->ctrls); + pm_runtime_disable(imx214->dev); + + return ret; +} + +static int imx214_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct imx214 *imx214 = to_imx214(sd); + + v4l2_async_unregister_subdev(&imx214->sd); + media_entity_cleanup(&imx214->sd.entity); + v4l2_ctrl_handler_free(&imx214->ctrls); + + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + + mutex_destroy(&imx214->mutex); + + return 0; +} + +static const struct of_device_id imx214_of_match[] = { + { .compatible = "sony,imx214" }, + { } +}; +MODULE_DEVICE_TABLE(of, imx214_of_match); + +static const struct dev_pm_ops imx214_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(imx214_suspend, imx214_resume) + SET_RUNTIME_PM_OPS(imx214_power_off, imx214_power_on, NULL) +}; + +static struct i2c_driver imx214_i2c_driver = { + .driver = { + .of_match_table = imx214_of_match, + .pm = &imx214_pm_ops, + .name = "imx214", + }, + .probe_new = imx214_probe, + .remove = imx214_remove, +}; + +module_i2c_driver(imx214_i2c_driver); + +MODULE_DESCRIPTION("Sony IMX214 Camera drier"); +MODULE_AUTHOR("Ricardo Ribalda <ricardo.ribalda@gmail.com>"); +MODULE_LICENSE("GPL v2"); |