static struct v4l2_mbus_framefmt *
__mxr_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
struct sub_mxr_device *sub_mxr = sd_to_sub_mxr(sd);
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_get_try_format(fh, pad);
else
return &sub_mxr->mbus_fmt[pad];
}
static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *mf = &fmt->format;
struct flite_frame *sink = &fimc->inp_frame;
const struct fimc_fmt *ffmt;
v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d",
fmt->pad, mf->code, mf->width, mf->height);
mf->colorspace = V4L2_COLORSPACE_JPEG;
mutex_lock(&fimc->lock);
if ((fimc->out_path == FIMC_IO_ISP && sd->entity.stream_count > 0) ||
(fimc->out_path == FIMC_IO_DMA && vb2_is_busy(&fimc->vb_queue))) {
mutex_unlock(&fimc->lock);
return -EBUSY;
}
ffmt = fimc_lite_try_format(fimc, &mf->width, &mf->height,
&mf->code, NULL, fmt->pad);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
mf = v4l2_subdev_get_try_format(fh, fmt->pad);
*mf = fmt->format;
mutex_unlock(&fimc->lock);
return 0;
}
if (fmt->pad == FLITE_SD_PAD_SINK) {
sink->f_width = mf->width;
sink->f_height = mf->height;
fimc->fmt = ffmt;
/* Set sink crop rectangle */
sink->rect.width = mf->width;
sink->rect.height = mf->height;
sink->rect.left = 0;
sink->rect.top = 0;
/* Reset source crop rectangle */
fimc->out_frame.rect = sink->rect;
} else {
/* Allow changing format only on sink pad */
mf->code = fimc->fmt->mbus_code;
mf->width = sink->rect.width;
mf->height = sink->rect.height;
}
mutex_unlock(&fimc->lock);
return 0;
}
static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct flite_drvdata *dd = fimc->dd;
struct v4l2_mbus_framefmt *mf = &format->format;
const struct fimc_fmt *fmt = NULL;
if (format->pad == FLITE_SD_PAD_SINK) {
v4l_bound_align_image(&mf->width, 8, dd->max_width,
ffs(dd->out_width_align) - 1,
&mf->height, 0, dd->max_height, 0, 0);
fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
if (WARN_ON(!fmt))
return NULL;
mf->colorspace = fmt->colorspace;
mf->code = fmt->mbus_code;
} else {
struct flite_frame *sink = &fimc->inp_frame;
struct v4l2_mbus_framefmt *sink_fmt;
struct v4l2_rect *rect;
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, cfg,
FLITE_SD_PAD_SINK);
mf->code = sink_fmt->code;
mf->colorspace = sink_fmt->colorspace;
rect = v4l2_subdev_get_try_crop(&fimc->subdev, cfg,
FLITE_SD_PAD_SINK);
} else {
mf->code = sink->fmt->mbus_code;
mf->colorspace = sink->fmt->colorspace;
rect = &sink->rect;
}
/* Allow changing format only on sink pad */
mf->width = rect->width;
mf->height = rect->height;
}
mf->field = V4L2_FIELD_NONE;
v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
mf->code, mf->colorspace, mf->width, mf->height);
return fmt;
}
struct v4l2_mbus_framefmt *
vsp1_entity_get_pad_format(struct vsp1_entity *entity,
struct v4l2_subdev_pad_config *cfg,
unsigned int pad, u32 which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &entity->formats[pad];
default:
return NULL;
}
}
static struct v4l2_mbus_framefmt *
__pixter_get_pad_format(struct pixter_device *sensor,
struct v4l2_subdev_fh *fh, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->format;
default:
return NULL;
}
}
static int adv7180_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct adv7180_state *state = to_state(sd);
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
format->format = *v4l2_subdev_get_try_format(sd, cfg, 0);
} else {
adv7180_mbus_fmt(sd, &format->format);
format->format.field = state->field;
}
return 0;
}
static struct v4l2_mbus_framefmt
*__xdmsc_get_pad_format(struct xdmsc_dev *xdmsc,
struct v4l2_subdev_pad_config *cfg,
unsigned int pad, u32 which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(&xdmsc->xvip.subdev,
cfg, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &xdmsc->formats[pad];
default:
return NULL;
}
}
static struct v4l2_mbus_framefmt *
_get_pad_format(struct nxp_resc *me, struct v4l2_subdev_fh *fh,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
if (pad >= NXP_RESC_PAD_MAX)
return NULL;
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &me->format[pad];
default:
return NULL;
}
}
static int ov13858_do_get_pad_format(struct ov13858 *ov13858,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct v4l2_mbus_framefmt *framefmt;
struct v4l2_subdev *sd = &ov13858->sd;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
fmt->format = *framefmt;
} else {
ov13858_update_pad_format(ov13858->cur_mode, fmt);
}
return 0;
}
static int adv748x_afe_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct v4l2_mbus_framefmt *mbusformat;
/* It makes no sense to get the format of the analog sink pads */
if (sdformat->pad != ADV748X_AFE_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
return adv748x_afe_get_format(sd, cfg, sdformat);
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
*mbusformat = sdformat->format;
return 0;
}
static int imx7_csi_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg)
{
struct imx7_csi *csi = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *mf;
int ret;
int i;
for (i = 0; i < IMX7_CSI_PADS_NUM; i++) {
mf = v4l2_subdev_get_try_format(sd, cfg, i);
ret = imx_media_init_mbus_fmt(mf, 800, 600, 0, V4L2_FIELD_NONE,
&csi->cc[i]);
if (ret < 0)
return ret;
}
return 0;
}
static struct v4l2_mbus_framefmt *
__i5ccdhb_get_pad_format(struct i5ccdhb_data *i5ccdhb, struct v4l2_subdev_fh *fh,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
{
return v4l2_subdev_get_try_format(fh, pad);
}
case V4L2_SUBDEV_FORMAT_ACTIVE:
{
return &i5ccdhb->format;
}
default:
{
return NULL;
}
}
}
/* Open sub-device */
static int ov13858_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct ov13858 *ov13858 = to_ov13858(sd);
struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd,
fh->pad,
0);
mutex_lock(&ov13858->mutex);
/* Initialize try_fmt */
try_fmt->width = ov13858->cur_mode->width;
try_fmt->height = ov13858->cur_mode->height;
try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
try_fmt->field = V4L2_FIELD_NONE;
/* No crop or compose */
mutex_unlock(&ov13858->mutex);
return 0;
}
static struct v4l2_mbus_framefmt *
__isp_subdev_get_format(struct atomisp_sub_device *isp_subdev,
struct v4l2_subdev_fh *fh, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
if (pad == ATOMISP_SUBDEV_PAD_SINK ||
pad == ATOMISP_SUBDEV_PAD_SOURCE_VF ||
pad == ATOMISP_SUBDEV_PAD_SOURCE_MO)
return &isp_subdev->formats[pad];
else
return NULL;
default:
return NULL;
}
}
static int adv748x_afe_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *sdformat)
{
struct adv748x_afe *afe = adv748x_sd_to_afe(sd);
struct v4l2_mbus_framefmt *mbusformat;
/* It makes no sense to get the format of the analog sink pads */
if (sdformat->pad != ADV748X_AFE_SOURCE)
return -EINVAL;
if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) {
mbusformat = v4l2_subdev_get_try_format(sd, cfg, sdformat->pad);
sdformat->format = *mbusformat;
} else {
adv748x_afe_fill_format(afe, &sdformat->format);
adv748x_afe_propagate_pixelrate(afe);
}
return 0;
}
static struct v4l2_mbus_framefmt *
__hm5040_get_pad_format(struct hm5040_device *sensor,
struct v4l2_subdev_fh *fh, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
if (pad != 0) {
dev_err(&client->dev,
"__hm5040_get_pad_format err. pad %x\n", pad);
return NULL;
}
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->format;
default:
return NULL;
}
}
static int fimc_isp_subdev_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct fimc_isp *isp = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *mf = &fmt->format;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
*mf = *v4l2_subdev_get_try_format(fh, fmt->pad);
return 0;
}
mf->colorspace = V4L2_COLORSPACE_SRGB;
mutex_lock(&isp->subdev_lock);
if (fmt->pad == FIMC_ISP_SD_PAD_SINK) {
/* ISP OTF input image format */
*mf = isp->sink_fmt;
} else {
/* ISP OTF output image format */
*mf = isp->src_fmt;
if (fmt->pad == FIMC_ISP_SD_PAD_SRC_FIFO) {
mf->colorspace = V4L2_COLORSPACE_JPEG;
mf->code = V4L2_MBUS_FMT_YUV10_1X30;
}
}
mutex_unlock(&isp->subdev_lock);
isp_dbg(1, sd, "%s: pad%d: fmt: 0x%x, %dx%d\n", __func__,
fmt->pad, mf->code, mf->width, mf->height);
return 0;
}
static int mt9m032_setup_pll(struct mt9m032 *sensor)
{
static const struct aptina_pll_limits limits = {
.ext_clock_min = 8000000,
.ext_clock_max = 16500000,
.int_clock_min = 2000000,
.int_clock_max = 24000000,
.out_clock_min = 322000000,
.out_clock_max = 693000000,
.pix_clock_max = 99000000,
.n_min = 1,
.n_max = 64,
.m_min = 16,
.m_max = 255,
.p1_min = 6,
.p1_max = 7,
};
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
struct mt9m032_platform_data *pdata = sensor->pdata;
struct aptina_pll pll;
u16 reg_val;
int ret;
pll.ext_clock = pdata->ext_clock;
pll.pix_clock = pdata->pix_clock;
ret = aptina_pll_calculate(&client->dev, &limits, &pll);
if (ret < 0)
return ret;
sensor->pix_clock = pdata->pix_clock;
ret = mt9m032_write(client, MT9M032_PLL_CONFIG1,
(pll.m << MT9M032_PLL_CONFIG1_MUL_SHIFT) |
((pll.n - 1) & MT9M032_PLL_CONFIG1_PREDIV_MASK));
if (!ret)
ret = mt9m032_write(client, MT9P031_PLL_CONTROL,
MT9P031_PLL_CONTROL_PWRON |
MT9P031_PLL_CONTROL_USEPLL);
if (!ret) /* more reserved, Continuous, Master Mode */
ret = mt9m032_write(client, MT9M032_READ_MODE1, 0x8000 |
MT9M032_READ_MODE1_STROBE_START_EXP |
MT9M032_READ_MODE1_STROBE_END_SHUTTER);
if (!ret) {
reg_val = (pll.p1 == 6 ? MT9M032_FORMATTER1_PLL_P1_6 : 0)
| MT9M032_FORMATTER1_PARALLEL | 0x001e; /* 14-bit */
ret = mt9m032_write(client, MT9M032_FORMATTER1, reg_val);
}
return ret;
}
/* -----------------------------------------------------------------------------
* Subdev pad operations
*/
static int mt9m032_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index != 0)
return -EINVAL;
code->code = V4L2_MBUS_FMT_Y8_1X8;
return 0;
}
static int mt9m032_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index != 0 || fse->code != V4L2_MBUS_FMT_Y8_1X8)
return -EINVAL;
fse->min_width = MT9M032_COLUMN_SIZE_DEF;
fse->max_width = MT9M032_COLUMN_SIZE_DEF;
fse->min_height = MT9M032_ROW_SIZE_DEF;
fse->max_height = MT9M032_ROW_SIZE_DEF;
return 0;
}
/**
* __mt9m032_get_pad_crop() - get crop rect
* @sensor: pointer to the sensor struct
* @fh: file handle for getting the try crop rect from
* @which: select try or active crop rect
*
* Returns a pointer the current active or fh relative try crop rect
*/
static struct v4l2_rect *
__mt9m032_get_pad_crop(struct mt9m032 *sensor, struct v4l2_subdev_fh *fh,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_crop(fh, 0);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->crop;
default:
return NULL;
}
}
/**
* __mt9m032_get_pad_format() - get format
* @sensor: pointer to the sensor struct
* @fh: file handle for getting the try format from
* @which: select try or active format
*
* Returns a pointer the current active or fh relative try format
*/
static struct v4l2_mbus_framefmt *
__mt9m032_get_pad_format(struct mt9m032 *sensor, struct v4l2_subdev_fh *fh,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, 0);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->format;
default:
return NULL;
}
}
static int mt9m032_get_pad_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
mutex_lock(&sensor->lock);
fmt->format = *__mt9m032_get_pad_format(sensor, fh, fmt->which);
mutex_unlock(&sensor->lock);
return 0;
}
static int mt9m032_set_pad_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
int ret;
mutex_lock(&sensor->lock);
if (sensor->streaming && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
ret = -EBUSY;
goto done;
}
/* Scaling is not supported, the format is thus fixed. */
fmt->format = *__mt9m032_get_pad_format(sensor, fh, fmt->which);
ret = 0;
done:
mutex_unlock(&sensor->lock);
return ret;
}
static int mt9m032_get_pad_crop(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_crop *crop)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
mutex_lock(&sensor->lock);
crop->rect = *__mt9m032_get_pad_crop(sensor, fh, crop->which);
mutex_unlock(&sensor->lock);
return 0;
}
static int mt9m032_set_pad_crop(struct v4l2_subdev *subdev,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_crop *crop)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *__crop;
struct v4l2_rect rect;
int ret = 0;
mutex_lock(&sensor->lock);
if (sensor->streaming && crop->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
ret = -EBUSY;
goto done;
}
/* Clamp the crop rectangle boundaries and align them to a multiple of 2
* pixels to ensure a GRBG Bayer pattern.
*/
rect.left = clamp(ALIGN(crop->rect.left, 2), MT9M032_COLUMN_START_MIN,
MT9M032_COLUMN_START_MAX);
rect.top = clamp(ALIGN(crop->rect.top, 2), MT9M032_ROW_START_MIN,
MT9M032_ROW_START_MAX);
rect.width = clamp(ALIGN(crop->rect.width, 2), MT9M032_COLUMN_SIZE_MIN,
MT9M032_COLUMN_SIZE_MAX);
rect.height = clamp(ALIGN(crop->rect.height, 2), MT9M032_ROW_SIZE_MIN,
MT9M032_ROW_SIZE_MAX);
rect.width = min(rect.width, MT9M032_PIXEL_ARRAY_WIDTH - rect.left);
rect.height = min(rect.height, MT9M032_PIXEL_ARRAY_HEIGHT - rect.top);
__crop = __mt9m032_get_pad_crop(sensor, fh, crop->which);
if (rect.width != __crop->width || rect.height != __crop->height) {
/* Reset the output image size if the crop rectangle size has
* been modified.
*/
format = __mt9m032_get_pad_format(sensor, fh, crop->which);
format->width = rect.width;
format->height = rect.height;
}
*__crop = rect;
crop->rect = rect;
if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE)
ret = mt9m032_update_geom_timing(sensor);
done:
mutex_unlock(&sensor->lock);
return ret;
}
static int mt9m032_get_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_frame_interval *fi)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
mutex_lock(&sensor->lock);
memset(fi, 0, sizeof(*fi));
fi->interval = sensor->frame_interval;
mutex_unlock(&sensor->lock);
return 0;
}
static int mt9m032_set_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_frame_interval *fi)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
int ret;
mutex_lock(&sensor->lock);
if (sensor->streaming) {
ret = -EBUSY;
goto done;
}
/* Avoid divisions by 0. */
if (fi->interval.denominator == 0)
fi->interval.denominator = 1;
ret = mt9m032_update_timing(sensor, &fi->interval);
if (!ret)
sensor->frame_interval = fi->interval;
done:
mutex_unlock(&sensor->lock);
return ret;
}
static int mt9m032_s_stream(struct v4l2_subdev *subdev, int streaming)
{
struct mt9m032 *sensor = to_mt9m032(subdev);
int ret;
mutex_lock(&sensor->lock);
ret = update_formatter2(sensor, streaming);
if (!ret)
sensor->streaming = streaming;
mutex_unlock(&sensor->lock);
return ret;
}
/* -----------------------------------------------------------------------------
* V4L2 subdev core operations
*/
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int mt9m032_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct mt9m032 *sensor = to_mt9m032(sd);
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
int val;
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
if (reg->match.addr != client->addr)
return -ENODEV;
val = mt9m032_read(client, reg->reg);
if (val < 0)
return -EIO;
reg->size = 2;
reg->val = val;
return 0;
}
static int mt9m032_s_register(struct v4l2_subdev *sd,
const struct v4l2_dbg_register *reg)
{
struct mt9m032 *sensor = to_mt9m032(sd);
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
if (reg->match.addr != client->addr)
return -ENODEV;
return mt9m032_write(client, reg->reg, reg->val);
}
#endif
/* -----------------------------------------------------------------------------
* V4L2 subdev control operations
*/
static int update_read_mode2(struct mt9m032 *sensor, bool vflip, bool hflip)
{
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
int reg_val = (vflip << MT9M032_READ_MODE2_VFLIP_SHIFT)
| (hflip << MT9M032_READ_MODE2_HFLIP_SHIFT)
| MT9M032_READ_MODE2_ROW_BLC
| 0x0007;
return mt9m032_write(client, MT9M032_READ_MODE2, reg_val);
}
static int mt9m032_set_gain(struct mt9m032 *sensor, s32 val)
{
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
int digital_gain_val; /* in 1/8th (0..127) */
int analog_mul; /* 0 or 1 */
int analog_gain_val; /* in 1/16th. (0..63) */
u16 reg_val;
digital_gain_val = 51; /* from setup example */
if (val < 63) {
analog_mul = 0;
analog_gain_val = val;
} else {
analog_mul = 1;
analog_gain_val = val / 2;
}
/* a_gain = (1 + analog_mul) + (analog_gain_val + 1) / 16 */
/* overall_gain = a_gain * (1 + digital_gain_val / 8) */
reg_val = ((digital_gain_val & MT9M032_GAIN_DIGITAL_MASK)
<< MT9M032_GAIN_DIGITAL_SHIFT)
| ((analog_mul & 1) << MT9M032_GAIN_AMUL_SHIFT)
| (analog_gain_val & MT9M032_GAIN_ANALOG_MASK);
return mt9m032_write(client, MT9M032_GAIN_ALL, reg_val);
}
static int mt9m032_try_ctrl(struct v4l2_ctrl *ctrl)
{
if (ctrl->id == V4L2_CID_GAIN && ctrl->val >= 63) {
/* round because of multiplier used for values >= 63 */
ctrl->val &= ~1;
}
return 0;
}
static int mt9m032_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct mt9m032 *sensor =
container_of(ctrl->handler, struct mt9m032, ctrls);
struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
int ret;
switch (ctrl->id) {
case V4L2_CID_GAIN:
return mt9m032_set_gain(sensor, ctrl->val);
case V4L2_CID_HFLIP:
/* case V4L2_CID_VFLIP: -- In the same cluster */
return update_read_mode2(sensor, sensor->vflip->val,
sensor->hflip->val);
case V4L2_CID_EXPOSURE:
ret = mt9m032_write(client, MT9M032_SHUTTER_WIDTH_HIGH,
(ctrl->val >> 16) & 0xffff);
if (ret < 0)
return ret;
return mt9m032_write(client, MT9M032_SHUTTER_WIDTH_LOW,
ctrl->val & 0xffff);
}
return 0;
}
static struct v4l2_ctrl_ops mt9m032_ctrl_ops = {
.s_ctrl = mt9m032_set_ctrl,
.try_ctrl = mt9m032_try_ctrl,
};
/* -------------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops mt9m032_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = mt9m032_g_register,
.s_register = mt9m032_s_register,
#endif
};
static const struct v4l2_subdev_video_ops mt9m032_video_ops = {
.s_stream = mt9m032_s_stream,
.g_frame_interval = mt9m032_get_frame_interval,
.s_frame_interval = mt9m032_set_frame_interval,
};
static const struct v4l2_subdev_pad_ops mt9m032_pad_ops = {
.enum_mbus_code = mt9m032_enum_mbus_code,
.enum_frame_size = mt9m032_enum_frame_size,
.get_fmt = mt9m032_get_pad_format,
.set_fmt = mt9m032_set_pad_format,
.set_crop = mt9m032_set_pad_crop,
.get_crop = mt9m032_get_pad_crop,
};
static const struct v4l2_subdev_ops mt9m032_ops = {
.core = &mt9m032_core_ops,
.video = &mt9m032_video_ops,
.pad = &mt9m032_pad_ops,
};
/* -----------------------------------------------------------------------------
* Driver initialization and probing
*/
static int mt9m032_probe(struct i2c_client *client,
const struct i2c_device_id *devid)
{
struct mt9m032_platform_data *pdata = client->dev.platform_data;
struct i2c_adapter *adapter = client->adapter;
struct mt9m032 *sensor;
int chip_version;
int ret;
if (pdata == NULL) {
dev_err(&client->dev, "No platform data\n");
return -EINVAL;
}
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
dev_warn(&client->dev,
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
return -EIO;
}
if (!client->dev.platform_data)
return -ENODEV;
sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
if (sensor == NULL)
return -ENOMEM;
mutex_init(&sensor->lock);
sensor->pdata = pdata;
v4l2_i2c_subdev_init(&sensor->subdev, client, &mt9m032_ops);
sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
chip_version = mt9m032_read(client, MT9M032_CHIP_VERSION);
if (chip_version != MT9M032_CHIP_VERSION_VALUE) {
dev_err(&client->dev, "MT9M032 not detected, wrong version "
"0x%04x\n", chip_version);
ret = -ENODEV;
goto error_sensor;
}
dev_info(&client->dev, "MT9M032 detected at address 0x%02x\n",
client->addr);
sensor->frame_interval.numerator = 1;
sensor->frame_interval.denominator = 30;
sensor->crop.left = MT9M032_COLUMN_START_DEF;
sensor->crop.top = MT9M032_ROW_START_DEF;
sensor->crop.width = MT9M032_COLUMN_SIZE_DEF;
sensor->crop.height = MT9M032_ROW_SIZE_DEF;
sensor->format.width = sensor->crop.width;
sensor->format.height = sensor->crop.height;
sensor->format.code = V4L2_MBUS_FMT_Y8_1X8;
sensor->format.field = V4L2_FIELD_NONE;
sensor->format.colorspace = V4L2_COLORSPACE_SRGB;
v4l2_ctrl_handler_init(&sensor->ctrls, 5);
v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
V4L2_CID_GAIN, 0, 127, 1, 64);
sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls,
&mt9m032_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls,
&mt9m032_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
V4L2_CID_EXPOSURE, MT9M032_SHUTTER_WIDTH_MIN,
MT9M032_SHUTTER_WIDTH_MAX, 1,
MT9M032_SHUTTER_WIDTH_DEF);
v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
V4L2_CID_PIXEL_RATE, pdata->pix_clock,
pdata->pix_clock, 1, pdata->pix_clock);
if (sensor->ctrls.error) {
ret = sensor->ctrls.error;
dev_err(&client->dev, "control initialization error %d\n", ret);
goto error_ctrl;
}
v4l2_ctrl_cluster(2, &sensor->hflip);
sensor->subdev.ctrl_handler = &sensor->ctrls;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad, 0);
if (ret < 0)
goto error_ctrl;
ret = mt9m032_write(client, MT9M032_RESET, 1); /* reset on */
if (ret < 0)
goto error_entity;
ret = mt9m032_write(client, MT9M032_RESET, 0); /* reset off */
if (ret < 0)
goto error_entity;
ret = mt9m032_setup_pll(sensor);
if (ret < 0)
goto error_entity;
usleep_range(10000, 11000);
ret = v4l2_ctrl_handler_setup(&sensor->ctrls);
if (ret < 0)
goto error_entity;
/* SIZE */
ret = mt9m032_update_geom_timing(sensor);
if (ret < 0)
goto error_entity;
ret = mt9m032_write(client, 0x41, 0x0000); /* reserved !!! */
if (ret < 0)
goto error_entity;
ret = mt9m032_write(client, 0x42, 0x0003); /* reserved !!! */
if (ret < 0)
goto error_entity;
ret = mt9m032_write(client, 0x43, 0x0003); /* reserved !!! */
if (ret < 0)
goto error_entity;
ret = mt9m032_write(client, 0x7f, 0x0000); /* reserved !!! */
if (ret < 0)
goto error_entity;
if (sensor->pdata->invert_pixclock) {
ret = mt9m032_write(client, MT9M032_PIX_CLK_CTRL,
MT9M032_PIX_CLK_CTRL_INV_PIXCLK);
if (ret < 0)
goto error_entity;
}
ret = mt9m032_write(client, MT9M032_RESTART, 1); /* Restart on */
if (ret < 0)
goto error_entity;
msleep(100);
ret = mt9m032_write(client, MT9M032_RESTART, 0); /* Restart off */
if (ret < 0)
goto error_entity;
msleep(100);
ret = update_formatter2(sensor, false);
if (ret < 0)
goto error_entity;
return ret;
error_entity:
media_entity_cleanup(&sensor->subdev.entity);
error_ctrl:
v4l2_ctrl_handler_free(&sensor->ctrls);
error_sensor:
mutex_destroy(&sensor->lock);
kfree(sensor);
return ret;
}
static int mt9m032_remove(struct i2c_client *client)
{
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct mt9m032 *sensor = to_mt9m032(subdev);
v4l2_device_unregister_subdev(subdev);
v4l2_ctrl_handler_free(&sensor->ctrls);
media_entity_cleanup(&subdev->entity);
mutex_destroy(&sensor->lock);
kfree(sensor);
return 0;
}
static const struct i2c_device_id mt9m032_id_table[] = {
{ MT9M032_NAME, 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, mt9m032_id_table);
static struct i2c_driver mt9m032_i2c_driver = {
.driver = {
.name = MT9M032_NAME,
},
.probe = mt9m032_probe,
.remove = mt9m032_remove,
.id_table = mt9m032_id_table,
};
