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OpenCloudOS-Kernel/drivers/media/i2c/imx214.c

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// 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 enhancement */
{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);
mode = v4l2_find_nearest_size(imx214_modes,
ARRAY_SIZE(imx214_modes), width, height,
format->format.width,
format->format.height);
__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 driver");
MODULE_AUTHOR("Ricardo Ribalda <ricardo.ribalda@gmail.com>");
MODULE_LICENSE("GPL v2");
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