| Message ID | 20240324220854.15010-3-laurent.pinchart@ideasonboard.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | media: Add driver for the Raspberry Pi <5 CSI-2 receiver | expand |
On 25/03/2024 00:08, Laurent Pinchart wrote: > Use the newly added internal pad API to expose the internal > configuration of the sensor to userspace in a standard manner. This also > paves the way for adding support for embedded data with an additional > internal pad. > > To maintain compatibility with existing userspace that may operate on > pad 0 unconditionally, keep the source pad numbered 0 and number the > internal image pad 1. If I remember right, we discussed that this (internal pads after external pads) would be the approach also for totally new drivers. > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- > 1 file changed, 133 insertions(+), 36 deletions(-) > > diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c > index 3878da50860e..817bf192e4d9 100644 > --- a/drivers/media/i2c/imx219.c > +++ b/drivers/media/i2c/imx219.c > @@ -140,6 +140,7 @@ > #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 > > /* IMX219 native and active pixel array size. */ > +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 > #define IMX219_NATIVE_WIDTH 3296U > #define IMX219_NATIVE_HEIGHT 2480U > #define IMX219_PIXEL_ARRAY_LEFT 8U > @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { > }, > }; > > +enum imx219_pad_ids { > + IMX219_PAD_SOURCE, > + IMX219_PAD_IMAGE, > + IMX219_NUM_PADS, > +}; Nitpick, but if the numbering of the values is important, I always mark the first one "= 0", to make it clear(er) for the reader. > struct imx219 { > struct v4l2_subdev sd; > - struct media_pad pad; > + struct media_pad pads[IMX219_NUM_PADS]; > > struct regmap *regmap; > struct clk *xclk; /* system clock to IMX219 */ > @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) > int ret = 0; > > state = v4l2_subdev_get_locked_active_state(&imx219->sd); > - format = v4l2_subdev_state_get_format(state, 0); > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > > if (ctrl->id == V4L2_CID_VBLANK) { > int exposure_max, exposure_def; > @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, > u64 bin_h, bin_v; > int ret = 0; > > - format = v4l2_subdev_state_get_format(state, 0); > - crop = v4l2_subdev_state_get_crop(state, 0); > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); > > switch (format->code) { > case MEDIA_BUS_FMT_SRGGB8_1X8: > @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, > { > struct imx219 *imx219 = to_imx219(sd); > > - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > - return -EINVAL; > + if (code->pad == IMX219_PAD_IMAGE) { > + /* The internal image pad is hardwired to the native format. */ > + if (code->index) > + return -EINVAL; > > - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); > + code->code = IMX219_NATIVE_FORMAT; > + } else { > + /* > + * On the source pad, the sensor supports multiple raw formats > + * with different bit depths. > + */ > + u32 format; > + > + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > + return -EINVAL; > + > + format = imx219_mbus_formats[code->index * 4]; > + code->code = imx219_get_format_code(imx219, format); > + } > > return 0; > } > @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, > struct v4l2_subdev_frame_size_enum *fse) > { > struct imx219 *imx219 = to_imx219(sd); > - u32 code; > > - if (fse->index >= ARRAY_SIZE(supported_modes)) > - return -EINVAL; > + if (fse->pad == IMX219_PAD_IMAGE) { > + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) > + return -EINVAL; > > - code = imx219_get_format_code(imx219, fse->code); > - if (fse->code != code) > - return -EINVAL; > + fse->min_width = IMX219_NATIVE_WIDTH; > + fse->max_width = IMX219_NATIVE_WIDTH; > + fse->min_height = IMX219_NATIVE_HEIGHT; > + fse->max_height = IMX219_NATIVE_HEIGHT; > + } else { > + if (fse->code != imx219_get_format_code(imx219, fse->code) || > + fse->index >= ARRAY_SIZE(supported_modes)) > + return -EINVAL; > > - fse->min_width = supported_modes[fse->index].width; > - fse->max_width = fse->min_width; > - fse->min_height = supported_modes[fse->index].height; > - fse->max_height = fse->min_height; > + fse->min_width = supported_modes[fse->index].width; > + fse->max_width = fse->min_width; > + fse->min_height = supported_modes[fse->index].height; > + fse->max_height = fse->min_height; > + } > > return 0; > } > @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > struct imx219 *imx219 = to_imx219(sd); > const struct imx219_mode *mode; > struct v4l2_mbus_framefmt *format; > + struct v4l2_rect *compose; > struct v4l2_rect *crop; > unsigned int bin_h, bin_v; > > + /* > + * The driver is mode-based, the format can be set on the source pad > + * only. > + */ > + if (fmt->pad != IMX219_PAD_SOURCE) > + return v4l2_subdev_get_fmt(sd, state, fmt); > + > /* > * Adjust the requested format to match the closest mode. The Bayer > * order varies with flips. > @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; > fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; > > - format = v4l2_subdev_state_get_format(state, 0); > + /* Propagate the format through the sensor. */ > + > + /* The image pad models the pixel array, and thus has a fixed size. */ > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); > *format = fmt->format; > + format->code = IMX219_NATIVE_FORMAT; > + format->width = IMX219_NATIVE_WIDTH; > + format->height = IMX219_NATIVE_HEIGHT; Isn't the image pad format always the same, and cannot be changed? The above hints otherwise. What fields can change in the image pad? Tomi > /* > * Use binning to maximize the crop rectangle size, and centre it in the > * sensor. > */ > - bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U); > - bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U); > + bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / fmt->format.width, 2U); > + bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / fmt->format.height, 2U); > > - crop = v4l2_subdev_state_get_crop(state, 0); > - crop->width = format->width * bin_h; > - crop->height = format->height * bin_v; > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); > + crop->width = fmt->format.width * bin_h; > + crop->height = fmt->format.height * bin_v; > crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2; > crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2; > > + /* > + * The compose rectangle models binning, its size is the sensor output > + * size. > + */ > + compose = v4l2_subdev_state_get_compose(state, IMX219_PAD_IMAGE); > + compose->left = 0; > + compose->top = 0; > + compose->width = fmt->format.width; > + compose->height = fmt->format.height; > + > + /* > + * No mode use digital crop, the source pad crop rectangle size and > + * format are thus identical to the image pad compose rectangle. > + */ > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_SOURCE); > + crop->left = 0; > + crop->top = 0; > + crop->width = fmt->format.width; > + crop->height = fmt->format.height; > + > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > + *format = fmt->format; > + > if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { > int exposure_max; > int exposure_def; > @@ -874,13 +939,13 @@ static int imx219_get_selection(struct v4l2_subdev *sd, > struct v4l2_subdev_state *state, > struct v4l2_subdev_selection *sel) > { > - switch (sel->target) { > - case V4L2_SEL_TGT_CROP: { > - sel->r = *v4l2_subdev_state_get_crop(state, 0); > - return 0; > - } > + struct v4l2_rect *compose; > > + switch (sel->target) { > case V4L2_SEL_TGT_NATIVE_SIZE: > + if (sel->pad != IMX219_PAD_IMAGE) > + return -EINVAL; > + > sel->r.top = 0; > sel->r.left = 0; > sel->r.width = IMX219_NATIVE_WIDTH; > @@ -890,11 +955,35 @@ static int imx219_get_selection(struct v4l2_subdev *sd, > > case V4L2_SEL_TGT_CROP_DEFAULT: > case V4L2_SEL_TGT_CROP_BOUNDS: > - sel->r.top = IMX219_PIXEL_ARRAY_TOP; > - sel->r.left = IMX219_PIXEL_ARRAY_LEFT; > - sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; > - sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; > + switch (sel->pad) { > + case IMX219_PAD_IMAGE: > + sel->r.top = IMX219_PIXEL_ARRAY_TOP; > + sel->r.left = IMX219_PIXEL_ARRAY_LEFT; > + sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; > + sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; > + return 0; > > + case IMX219_PAD_SOURCE: > + compose = v4l2_subdev_state_get_compose(state, > + IMX219_PAD_IMAGE); > + sel->r.top = 0; > + sel->r.left = 0; > + sel->r.width = compose->width; > + sel->r.height = compose->height; > + return 0; > + } > + > + break; > + > + case V4L2_SEL_TGT_CROP: > + sel->r = *v4l2_subdev_state_get_crop(state, sel->pad); > + return 0; > + > + case V4L2_SEL_TGT_COMPOSE: > + if (sel->pad != IMX219_PAD_IMAGE) > + return -EINVAL; > + > + sel->r = *v4l2_subdev_state_get_compose(state, sel->pad); > return 0; > } > > @@ -906,7 +995,7 @@ static int imx219_init_state(struct v4l2_subdev *sd, > { > struct v4l2_subdev_format fmt = { > .which = V4L2_SUBDEV_FORMAT_TRY, > - .pad = 0, > + .pad = IMX219_PAD_SOURCE, > .format = { > .code = MEDIA_BUS_FMT_SRGGB10_1X10, > .width = supported_modes[0].width, > @@ -1174,10 +1263,18 @@ static int imx219_probe(struct i2c_client *client) > V4L2_SUBDEV_FL_HAS_EVENTS; > imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > > - /* Initialize source pad */ > - imx219->pad.flags = MEDIA_PAD_FL_SOURCE; > + /* > + * Initialize the pads. To preserve backward compatibility with > + * userspace that used the sensor before the introduction of the > + * internal image pad, the external source pad is numbered 0 and the > + * internal image pad numbered 1. > + */ > + imx219->pads[IMX219_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; > + imx219->pads[IMX219_PAD_IMAGE].flags = MEDIA_PAD_FL_SINK > + | MEDIA_PAD_FL_INTERNAL; > > - ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); > + ret = media_entity_pads_init(&imx219->sd.entity, > + ARRAY_SIZE(imx219->pads), imx219->pads); > if (ret) { > dev_err(dev, "failed to init entity pads: %d\n", ret); > goto error_handler_free;
On Wed, Mar 27, 2024 at 11:51:49AM +0200, Tomi Valkeinen wrote: > On 25/03/2024 00:08, Laurent Pinchart wrote: > > Use the newly added internal pad API to expose the internal > > configuration of the sensor to userspace in a standard manner. This also > > paves the way for adding support for embedded data with an additional > > internal pad. > > > > To maintain compatibility with existing userspace that may operate on > > pad 0 unconditionally, keep the source pad numbered 0 and number the > > internal image pad 1. > > If I remember right, we discussed that this (internal pads after > external pads) would be the approach also for totally new drivers. Do you recall the rationale for that ? Compatibility (within some limits I suppose) with existing userspace for new drivers ? > > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > --- > > drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- > > 1 file changed, 133 insertions(+), 36 deletions(-) > > > > diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c > > index 3878da50860e..817bf192e4d9 100644 > > --- a/drivers/media/i2c/imx219.c > > +++ b/drivers/media/i2c/imx219.c > > @@ -140,6 +140,7 @@ > > #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 > > > > /* IMX219 native and active pixel array size. */ > > +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 > > #define IMX219_NATIVE_WIDTH 3296U > > #define IMX219_NATIVE_HEIGHT 2480U > > #define IMX219_PIXEL_ARRAY_LEFT 8U > > @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { > > }, > > }; > > > > +enum imx219_pad_ids { > > + IMX219_PAD_SOURCE, > > + IMX219_PAD_IMAGE, > > + IMX219_NUM_PADS, > > +}; > > Nitpick, but if the numbering of the values is important, I always mark > the first one "= 0", to make it clear(er) for the reader. I'll do that. > > struct imx219 { > > struct v4l2_subdev sd; > > - struct media_pad pad; > > + struct media_pad pads[IMX219_NUM_PADS]; > > > > struct regmap *regmap; > > struct clk *xclk; /* system clock to IMX219 */ > > @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) > > int ret = 0; > > > > state = v4l2_subdev_get_locked_active_state(&imx219->sd); > > - format = v4l2_subdev_state_get_format(state, 0); > > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > > > > if (ctrl->id == V4L2_CID_VBLANK) { > > int exposure_max, exposure_def; > > @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, > > u64 bin_h, bin_v; > > int ret = 0; > > > > - format = v4l2_subdev_state_get_format(state, 0); > > - crop = v4l2_subdev_state_get_crop(state, 0); > > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); > > > > switch (format->code) { > > case MEDIA_BUS_FMT_SRGGB8_1X8: > > @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, > > { > > struct imx219 *imx219 = to_imx219(sd); > > > > - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > > - return -EINVAL; > > + if (code->pad == IMX219_PAD_IMAGE) { > > + /* The internal image pad is hardwired to the native format. */ > > + if (code->index) > > + return -EINVAL; > > > > - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); > > + code->code = IMX219_NATIVE_FORMAT; > > + } else { > > + /* > > + * On the source pad, the sensor supports multiple raw formats > > + * with different bit depths. > > + */ > > + u32 format; > > + > > + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > > + return -EINVAL; > > + > > + format = imx219_mbus_formats[code->index * 4]; > > + code->code = imx219_get_format_code(imx219, format); > > + } > > > > return 0; > > } > > @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, > > struct v4l2_subdev_frame_size_enum *fse) > > { > > struct imx219 *imx219 = to_imx219(sd); > > - u32 code; > > > > - if (fse->index >= ARRAY_SIZE(supported_modes)) > > - return -EINVAL; > > + if (fse->pad == IMX219_PAD_IMAGE) { > > + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) > > + return -EINVAL; > > > > - code = imx219_get_format_code(imx219, fse->code); > > - if (fse->code != code) > > - return -EINVAL; > > + fse->min_width = IMX219_NATIVE_WIDTH; > > + fse->max_width = IMX219_NATIVE_WIDTH; > > + fse->min_height = IMX219_NATIVE_HEIGHT; > > + fse->max_height = IMX219_NATIVE_HEIGHT; > > + } else { > > + if (fse->code != imx219_get_format_code(imx219, fse->code) || > > + fse->index >= ARRAY_SIZE(supported_modes)) > > + return -EINVAL; > > > > - fse->min_width = supported_modes[fse->index].width; > > - fse->max_width = fse->min_width; > > - fse->min_height = supported_modes[fse->index].height; > > - fse->max_height = fse->min_height; > > + fse->min_width = supported_modes[fse->index].width; > > + fse->max_width = fse->min_width; > > + fse->min_height = supported_modes[fse->index].height; > > + fse->max_height = fse->min_height; > > + } > > > > return 0; > > } > > @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > > struct imx219 *imx219 = to_imx219(sd); > > const struct imx219_mode *mode; > > struct v4l2_mbus_framefmt *format; > > + struct v4l2_rect *compose; > > struct v4l2_rect *crop; > > unsigned int bin_h, bin_v; > > > > + /* > > + * The driver is mode-based, the format can be set on the source pad > > + * only. > > + */ > > + if (fmt->pad != IMX219_PAD_SOURCE) > > + return v4l2_subdev_get_fmt(sd, state, fmt); > > + > > /* > > * Adjust the requested format to match the closest mode. The Bayer > > * order varies with flips. > > @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > > fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; > > fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; > > > > - format = v4l2_subdev_state_get_format(state, 0); > > + /* Propagate the format through the sensor. */ > > + > > + /* The image pad models the pixel array, and thus has a fixed size. */ > > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); > > *format = fmt->format; > > + format->code = IMX219_NATIVE_FORMAT; > > + format->width = IMX219_NATIVE_WIDTH; > > + format->height = IMX219_NATIVE_HEIGHT; > > Isn't the image pad format always the same, and cannot be changed? The > above hints otherwise. What fields can change in the image pad? None. I'll update the comment above to state /* The image pad models the pixel array, and thus has a fixed format. */ The code behaviour matches that. > > /* > > * Use binning to maximize the crop rectangle size, and centre it in the > > * sensor. > > */ > > - bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U); > > - bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U); > > + bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / fmt->format.width, 2U); > > + bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / fmt->format.height, 2U); > > > > - crop = v4l2_subdev_state_get_crop(state, 0); > > - crop->width = format->width * bin_h; > > - crop->height = format->height * bin_v; > > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); > > + crop->width = fmt->format.width * bin_h; > > + crop->height = fmt->format.height * bin_v; > > crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2; > > crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2; > > > > + /* > > + * The compose rectangle models binning, its size is the sensor output > > + * size. > > + */ > > + compose = v4l2_subdev_state_get_compose(state, IMX219_PAD_IMAGE); > > + compose->left = 0; > > + compose->top = 0; > > + compose->width = fmt->format.width; > > + compose->height = fmt->format.height; > > + > > + /* > > + * No mode use digital crop, the source pad crop rectangle size and > > + * format are thus identical to the image pad compose rectangle. > > + */ > > + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_SOURCE); > > + crop->left = 0; > > + crop->top = 0; > > + crop->width = fmt->format.width; > > + crop->height = fmt->format.height; > > + > > + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > > + *format = fmt->format; > > + > > if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { > > int exposure_max; > > int exposure_def; > > @@ -874,13 +939,13 @@ static int imx219_get_selection(struct v4l2_subdev *sd, > > struct v4l2_subdev_state *state, > > struct v4l2_subdev_selection *sel) > > { > > - switch (sel->target) { > > - case V4L2_SEL_TGT_CROP: { > > - sel->r = *v4l2_subdev_state_get_crop(state, 0); > > - return 0; > > - } > > + struct v4l2_rect *compose; > > > > + switch (sel->target) { > > case V4L2_SEL_TGT_NATIVE_SIZE: > > + if (sel->pad != IMX219_PAD_IMAGE) > > + return -EINVAL; > > + > > sel->r.top = 0; > > sel->r.left = 0; > > sel->r.width = IMX219_NATIVE_WIDTH; > > @@ -890,11 +955,35 @@ static int imx219_get_selection(struct v4l2_subdev *sd, > > > > case V4L2_SEL_TGT_CROP_DEFAULT: > > case V4L2_SEL_TGT_CROP_BOUNDS: > > - sel->r.top = IMX219_PIXEL_ARRAY_TOP; > > - sel->r.left = IMX219_PIXEL_ARRAY_LEFT; > > - sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; > > - sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; > > + switch (sel->pad) { > > + case IMX219_PAD_IMAGE: > > + sel->r.top = IMX219_PIXEL_ARRAY_TOP; > > + sel->r.left = IMX219_PIXEL_ARRAY_LEFT; > > + sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; > > + sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; > > + return 0; > > > > + case IMX219_PAD_SOURCE: > > + compose = v4l2_subdev_state_get_compose(state, > > + IMX219_PAD_IMAGE); > > + sel->r.top = 0; > > + sel->r.left = 0; > > + sel->r.width = compose->width; > > + sel->r.height = compose->height; > > + return 0; > > + } > > + > > + break; > > + > > + case V4L2_SEL_TGT_CROP: > > + sel->r = *v4l2_subdev_state_get_crop(state, sel->pad); > > + return 0; > > + > > + case V4L2_SEL_TGT_COMPOSE: > > + if (sel->pad != IMX219_PAD_IMAGE) > > + return -EINVAL; > > + > > + sel->r = *v4l2_subdev_state_get_compose(state, sel->pad); > > return 0; > > } > > > > @@ -906,7 +995,7 @@ static int imx219_init_state(struct v4l2_subdev *sd, > > { > > struct v4l2_subdev_format fmt = { > > .which = V4L2_SUBDEV_FORMAT_TRY, > > - .pad = 0, > > + .pad = IMX219_PAD_SOURCE, > > .format = { > > .code = MEDIA_BUS_FMT_SRGGB10_1X10, > > .width = supported_modes[0].width, > > @@ -1174,10 +1263,18 @@ static int imx219_probe(struct i2c_client *client) > > V4L2_SUBDEV_FL_HAS_EVENTS; > > imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > > > > - /* Initialize source pad */ > > - imx219->pad.flags = MEDIA_PAD_FL_SOURCE; > > + /* > > + * Initialize the pads. To preserve backward compatibility with > > + * userspace that used the sensor before the introduction of the > > + * internal image pad, the external source pad is numbered 0 and the > > + * internal image pad numbered 1. > > + */ > > + imx219->pads[IMX219_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; > > + imx219->pads[IMX219_PAD_IMAGE].flags = MEDIA_PAD_FL_SINK > > + | MEDIA_PAD_FL_INTERNAL; > > > > - ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); > > + ret = media_entity_pads_init(&imx219->sd.entity, > > + ARRAY_SIZE(imx219->pads), imx219->pads); > > if (ret) { > > dev_err(dev, "failed to init entity pads: %d\n", ret); > > goto error_handler_free;
On 28/03/2024 18:09, Laurent Pinchart wrote: > On Wed, Mar 27, 2024 at 11:51:49AM +0200, Tomi Valkeinen wrote: >> On 25/03/2024 00:08, Laurent Pinchart wrote: >>> Use the newly added internal pad API to expose the internal >>> configuration of the sensor to userspace in a standard manner. This also >>> paves the way for adding support for embedded data with an additional >>> internal pad. >>> >>> To maintain compatibility with existing userspace that may operate on >>> pad 0 unconditionally, keep the source pad numbered 0 and number the >>> internal image pad 1. >> >> If I remember right, we discussed that this (internal pads after >> external pads) would be the approach also for totally new drivers. > > Do you recall the rationale for that ? Compatibility (within some limits > I suppose) with existing userspace for new drivers ? I don't. Probably compatibility, and making the subdevs with internal pads look similar to subdevs without them. I guess in theory it shouldn't matter. >>> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >>> --- >>> drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- >>> 1 file changed, 133 insertions(+), 36 deletions(-) >>> >>> diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c >>> index 3878da50860e..817bf192e4d9 100644 >>> --- a/drivers/media/i2c/imx219.c >>> +++ b/drivers/media/i2c/imx219.c >>> @@ -140,6 +140,7 @@ >>> #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 >>> >>> /* IMX219 native and active pixel array size. */ >>> +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 >>> #define IMX219_NATIVE_WIDTH 3296U >>> #define IMX219_NATIVE_HEIGHT 2480U >>> #define IMX219_PIXEL_ARRAY_LEFT 8U >>> @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { >>> }, >>> }; >>> >>> +enum imx219_pad_ids { >>> + IMX219_PAD_SOURCE, >>> + IMX219_PAD_IMAGE, >>> + IMX219_NUM_PADS, >>> +}; >> >> Nitpick, but if the numbering of the values is important, I always mark >> the first one "= 0", to make it clear(er) for the reader. > > I'll do that. > >>> struct imx219 { >>> struct v4l2_subdev sd; >>> - struct media_pad pad; >>> + struct media_pad pads[IMX219_NUM_PADS]; >>> >>> struct regmap *regmap; >>> struct clk *xclk; /* system clock to IMX219 */ >>> @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) >>> int ret = 0; >>> >>> state = v4l2_subdev_get_locked_active_state(&imx219->sd); >>> - format = v4l2_subdev_state_get_format(state, 0); >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); >>> >>> if (ctrl->id == V4L2_CID_VBLANK) { >>> int exposure_max, exposure_def; >>> @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, >>> u64 bin_h, bin_v; >>> int ret = 0; >>> >>> - format = v4l2_subdev_state_get_format(state, 0); >>> - crop = v4l2_subdev_state_get_crop(state, 0); >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); >>> + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); >>> >>> switch (format->code) { >>> case MEDIA_BUS_FMT_SRGGB8_1X8: >>> @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, >>> { >>> struct imx219 *imx219 = to_imx219(sd); >>> >>> - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) >>> - return -EINVAL; >>> + if (code->pad == IMX219_PAD_IMAGE) { >>> + /* The internal image pad is hardwired to the native format. */ >>> + if (code->index) >>> + return -EINVAL; >>> >>> - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); >>> + code->code = IMX219_NATIVE_FORMAT; >>> + } else { >>> + /* >>> + * On the source pad, the sensor supports multiple raw formats >>> + * with different bit depths. >>> + */ >>> + u32 format; >>> + >>> + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) >>> + return -EINVAL; >>> + >>> + format = imx219_mbus_formats[code->index * 4]; >>> + code->code = imx219_get_format_code(imx219, format); >>> + } >>> >>> return 0; >>> } >>> @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, >>> struct v4l2_subdev_frame_size_enum *fse) >>> { >>> struct imx219 *imx219 = to_imx219(sd); >>> - u32 code; >>> >>> - if (fse->index >= ARRAY_SIZE(supported_modes)) >>> - return -EINVAL; >>> + if (fse->pad == IMX219_PAD_IMAGE) { >>> + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) >>> + return -EINVAL; >>> >>> - code = imx219_get_format_code(imx219, fse->code); >>> - if (fse->code != code) >>> - return -EINVAL; >>> + fse->min_width = IMX219_NATIVE_WIDTH; >>> + fse->max_width = IMX219_NATIVE_WIDTH; >>> + fse->min_height = IMX219_NATIVE_HEIGHT; >>> + fse->max_height = IMX219_NATIVE_HEIGHT; >>> + } else { >>> + if (fse->code != imx219_get_format_code(imx219, fse->code) || >>> + fse->index >= ARRAY_SIZE(supported_modes)) >>> + return -EINVAL; >>> >>> - fse->min_width = supported_modes[fse->index].width; >>> - fse->max_width = fse->min_width; >>> - fse->min_height = supported_modes[fse->index].height; >>> - fse->max_height = fse->min_height; >>> + fse->min_width = supported_modes[fse->index].width; >>> + fse->max_width = fse->min_width; >>> + fse->min_height = supported_modes[fse->index].height; >>> + fse->max_height = fse->min_height; >>> + } >>> >>> return 0; >>> } >>> @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, >>> struct imx219 *imx219 = to_imx219(sd); >>> const struct imx219_mode *mode; >>> struct v4l2_mbus_framefmt *format; >>> + struct v4l2_rect *compose; >>> struct v4l2_rect *crop; >>> unsigned int bin_h, bin_v; >>> >>> + /* >>> + * The driver is mode-based, the format can be set on the source pad >>> + * only. >>> + */ >>> + if (fmt->pad != IMX219_PAD_SOURCE) >>> + return v4l2_subdev_get_fmt(sd, state, fmt); >>> + >>> /* >>> * Adjust the requested format to match the closest mode. The Bayer >>> * order varies with flips. >>> @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, >>> fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; >>> fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; >>> >>> - format = v4l2_subdev_state_get_format(state, 0); >>> + /* Propagate the format through the sensor. */ >>> + >>> + /* The image pad models the pixel array, and thus has a fixed size. */ >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); >>> *format = fmt->format; >>> + format->code = IMX219_NATIVE_FORMAT; >>> + format->width = IMX219_NATIVE_WIDTH; >>> + format->height = IMX219_NATIVE_HEIGHT; >> >> Isn't the image pad format always the same, and cannot be changed? The >> above hints otherwise. What fields can change in the image pad? > > None. I'll update the comment above to state > > /* The image pad models the pixel array, and thus has a fixed format. */ > > The code behaviour matches that. If it never changes, shouldn't it be set once in init_state, rather than setting it here every time set_format is called? Tomi
On Thu, Mar 28, 2024 at 06:18:24PM +0200, Tomi Valkeinen wrote: > On 28/03/2024 18:09, Laurent Pinchart wrote: > > On Wed, Mar 27, 2024 at 11:51:49AM +0200, Tomi Valkeinen wrote: > >> On 25/03/2024 00:08, Laurent Pinchart wrote: > >>> Use the newly added internal pad API to expose the internal > >>> configuration of the sensor to userspace in a standard manner. This also > >>> paves the way for adding support for embedded data with an additional > >>> internal pad. > >>> > >>> To maintain compatibility with existing userspace that may operate on > >>> pad 0 unconditionally, keep the source pad numbered 0 and number the > >>> internal image pad 1. > >> > >> If I remember right, we discussed that this (internal pads after > >> external pads) would be the approach also for totally new drivers. > > > > Do you recall the rationale for that ? Compatibility (within some limits > > I suppose) with existing userspace for new drivers ? > > I don't. Probably compatibility, and making the subdevs with internal > pads look similar to subdevs without them. I guess in theory it > shouldn't matter. > > >>> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > >>> --- > >>> drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- > >>> 1 file changed, 133 insertions(+), 36 deletions(-) > >>> > >>> diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c > >>> index 3878da50860e..817bf192e4d9 100644 > >>> --- a/drivers/media/i2c/imx219.c > >>> +++ b/drivers/media/i2c/imx219.c > >>> @@ -140,6 +140,7 @@ > >>> #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 > >>> > >>> /* IMX219 native and active pixel array size. */ > >>> +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 > >>> #define IMX219_NATIVE_WIDTH 3296U > >>> #define IMX219_NATIVE_HEIGHT 2480U > >>> #define IMX219_PIXEL_ARRAY_LEFT 8U > >>> @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { > >>> }, > >>> }; > >>> > >>> +enum imx219_pad_ids { > >>> + IMX219_PAD_SOURCE, > >>> + IMX219_PAD_IMAGE, > >>> + IMX219_NUM_PADS, > >>> +}; > >> > >> Nitpick, but if the numbering of the values is important, I always mark > >> the first one "= 0", to make it clear(er) for the reader. > > > > I'll do that. > > > >>> struct imx219 { > >>> struct v4l2_subdev sd; > >>> - struct media_pad pad; > >>> + struct media_pad pads[IMX219_NUM_PADS]; > >>> > >>> struct regmap *regmap; > >>> struct clk *xclk; /* system clock to IMX219 */ > >>> @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) > >>> int ret = 0; > >>> > >>> state = v4l2_subdev_get_locked_active_state(&imx219->sd); > >>> - format = v4l2_subdev_state_get_format(state, 0); > >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > >>> > >>> if (ctrl->id == V4L2_CID_VBLANK) { > >>> int exposure_max, exposure_def; > >>> @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, > >>> u64 bin_h, bin_v; > >>> int ret = 0; > >>> > >>> - format = v4l2_subdev_state_get_format(state, 0); > >>> - crop = v4l2_subdev_state_get_crop(state, 0); > >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); > >>> + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); > >>> > >>> switch (format->code) { > >>> case MEDIA_BUS_FMT_SRGGB8_1X8: > >>> @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, > >>> { > >>> struct imx219 *imx219 = to_imx219(sd); > >>> > >>> - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > >>> - return -EINVAL; > >>> + if (code->pad == IMX219_PAD_IMAGE) { > >>> + /* The internal image pad is hardwired to the native format. */ > >>> + if (code->index) > >>> + return -EINVAL; > >>> > >>> - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); > >>> + code->code = IMX219_NATIVE_FORMAT; > >>> + } else { > >>> + /* > >>> + * On the source pad, the sensor supports multiple raw formats > >>> + * with different bit depths. > >>> + */ > >>> + u32 format; > >>> + > >>> + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) > >>> + return -EINVAL; > >>> + > >>> + format = imx219_mbus_formats[code->index * 4]; > >>> + code->code = imx219_get_format_code(imx219, format); > >>> + } > >>> > >>> return 0; > >>> } > >>> @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, > >>> struct v4l2_subdev_frame_size_enum *fse) > >>> { > >>> struct imx219 *imx219 = to_imx219(sd); > >>> - u32 code; > >>> > >>> - if (fse->index >= ARRAY_SIZE(supported_modes)) > >>> - return -EINVAL; > >>> + if (fse->pad == IMX219_PAD_IMAGE) { > >>> + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) > >>> + return -EINVAL; > >>> > >>> - code = imx219_get_format_code(imx219, fse->code); > >>> - if (fse->code != code) > >>> - return -EINVAL; > >>> + fse->min_width = IMX219_NATIVE_WIDTH; > >>> + fse->max_width = IMX219_NATIVE_WIDTH; > >>> + fse->min_height = IMX219_NATIVE_HEIGHT; > >>> + fse->max_height = IMX219_NATIVE_HEIGHT; > >>> + } else { > >>> + if (fse->code != imx219_get_format_code(imx219, fse->code) || > >>> + fse->index >= ARRAY_SIZE(supported_modes)) > >>> + return -EINVAL; > >>> > >>> - fse->min_width = supported_modes[fse->index].width; > >>> - fse->max_width = fse->min_width; > >>> - fse->min_height = supported_modes[fse->index].height; > >>> - fse->max_height = fse->min_height; > >>> + fse->min_width = supported_modes[fse->index].width; > >>> + fse->max_width = fse->min_width; > >>> + fse->min_height = supported_modes[fse->index].height; > >>> + fse->max_height = fse->min_height; > >>> + } > >>> > >>> return 0; > >>> } > >>> @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > >>> struct imx219 *imx219 = to_imx219(sd); > >>> const struct imx219_mode *mode; > >>> struct v4l2_mbus_framefmt *format; > >>> + struct v4l2_rect *compose; > >>> struct v4l2_rect *crop; > >>> unsigned int bin_h, bin_v; > >>> > >>> + /* > >>> + * The driver is mode-based, the format can be set on the source pad > >>> + * only. > >>> + */ > >>> + if (fmt->pad != IMX219_PAD_SOURCE) > >>> + return v4l2_subdev_get_fmt(sd, state, fmt); > >>> + > >>> /* > >>> * Adjust the requested format to match the closest mode. The Bayer > >>> * order varies with flips. > >>> @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, > >>> fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; > >>> fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; > >>> > >>> - format = v4l2_subdev_state_get_format(state, 0); > >>> + /* Propagate the format through the sensor. */ > >>> + > >>> + /* The image pad models the pixel array, and thus has a fixed size. */ > >>> + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); > >>> *format = fmt->format; > >>> + format->code = IMX219_NATIVE_FORMAT; > >>> + format->width = IMX219_NATIVE_WIDTH; > >>> + format->height = IMX219_NATIVE_HEIGHT; > >> > >> Isn't the image pad format always the same, and cannot be changed? The > >> above hints otherwise. What fields can change in the image pad? > > > > None. I'll update the comment above to state > > > > /* The image pad models the pixel array, and thus has a fixed format. */ > > > > The code behaviour matches that. > > If it never changes, shouldn't it be set once in init_state, rather than > setting it here every time set_format is called? I think Sakari commented on that too. It's possible, but make .init_state() significantly more complex, and splits the logic between .init_state() and .set_fmt(). I'm not convinced it's worth the work.
diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index 3878da50860e..817bf192e4d9 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -140,6 +140,7 @@ #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 /* IMX219 native and active pixel array size. */ +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 #define IMX219_NATIVE_WIDTH 3296U #define IMX219_NATIVE_HEIGHT 2480U #define IMX219_PIXEL_ARRAY_LEFT 8U @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { }, }; +enum imx219_pad_ids { + IMX219_PAD_SOURCE, + IMX219_PAD_IMAGE, + IMX219_NUM_PADS, +}; + struct imx219 { struct v4l2_subdev sd; - struct media_pad pad; + struct media_pad pads[IMX219_NUM_PADS]; struct regmap *regmap; struct clk *xclk; /* system clock to IMX219 */ @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) int ret = 0; state = v4l2_subdev_get_locked_active_state(&imx219->sd); - format = v4l2_subdev_state_get_format(state, 0); + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); if (ctrl->id == V4L2_CID_VBLANK) { int exposure_max, exposure_def; @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, u64 bin_h, bin_v; int ret = 0; - format = v4l2_subdev_state_get_format(state, 0); - crop = v4l2_subdev_state_get_crop(state, 0); + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); switch (format->code) { case MEDIA_BUS_FMT_SRGGB8_1X8: @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, { struct imx219 *imx219 = to_imx219(sd); - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) - return -EINVAL; + if (code->pad == IMX219_PAD_IMAGE) { + /* The internal image pad is hardwired to the native format. */ + if (code->index) + return -EINVAL; - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); + code->code = IMX219_NATIVE_FORMAT; + } else { + /* + * On the source pad, the sensor supports multiple raw formats + * with different bit depths. + */ + u32 format; + + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) + return -EINVAL; + + format = imx219_mbus_formats[code->index * 4]; + code->code = imx219_get_format_code(imx219, format); + } return 0; } @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_frame_size_enum *fse) { struct imx219 *imx219 = to_imx219(sd); - u32 code; - if (fse->index >= ARRAY_SIZE(supported_modes)) - return -EINVAL; + if (fse->pad == IMX219_PAD_IMAGE) { + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) + return -EINVAL; - code = imx219_get_format_code(imx219, fse->code); - if (fse->code != code) - return -EINVAL; + fse->min_width = IMX219_NATIVE_WIDTH; + fse->max_width = IMX219_NATIVE_WIDTH; + fse->min_height = IMX219_NATIVE_HEIGHT; + fse->max_height = IMX219_NATIVE_HEIGHT; + } else { + if (fse->code != imx219_get_format_code(imx219, fse->code) || + fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; - fse->min_width = supported_modes[fse->index].width; - fse->max_width = fse->min_width; - fse->min_height = supported_modes[fse->index].height; - fse->max_height = fse->min_height; + fse->min_width = supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = supported_modes[fse->index].height; + fse->max_height = fse->min_height; + } return 0; } @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, struct imx219 *imx219 = to_imx219(sd); const struct imx219_mode *mode; struct v4l2_mbus_framefmt *format; + struct v4l2_rect *compose; struct v4l2_rect *crop; unsigned int bin_h, bin_v; + /* + * The driver is mode-based, the format can be set on the source pad + * only. + */ + if (fmt->pad != IMX219_PAD_SOURCE) + return v4l2_subdev_get_fmt(sd, state, fmt); + /* * Adjust the requested format to match the closest mode. The Bayer * order varies with flips. @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; - format = v4l2_subdev_state_get_format(state, 0); + /* Propagate the format through the sensor. */ + + /* The image pad models the pixel array, and thus has a fixed size. */ + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); *format = fmt->format; + format->code = IMX219_NATIVE_FORMAT; + format->width = IMX219_NATIVE_WIDTH; + format->height = IMX219_NATIVE_HEIGHT; /* * Use binning to maximize the crop rectangle size, and centre it in the * sensor. */ - bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U); - bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U); + bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / fmt->format.width, 2U); + bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / fmt->format.height, 2U); - crop = v4l2_subdev_state_get_crop(state, 0); - crop->width = format->width * bin_h; - crop->height = format->height * bin_v; + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); + crop->width = fmt->format.width * bin_h; + crop->height = fmt->format.height * bin_v; crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2; crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2; + /* + * The compose rectangle models binning, its size is the sensor output + * size. + */ + compose = v4l2_subdev_state_get_compose(state, IMX219_PAD_IMAGE); + compose->left = 0; + compose->top = 0; + compose->width = fmt->format.width; + compose->height = fmt->format.height; + + /* + * No mode use digital crop, the source pad crop rectangle size and + * format are thus identical to the image pad compose rectangle. + */ + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_SOURCE); + crop->left = 0; + crop->top = 0; + crop->width = fmt->format.width; + crop->height = fmt->format.height; + + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); + *format = fmt->format; + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { int exposure_max; int exposure_def; @@ -874,13 +939,13 @@ static int imx219_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { - switch (sel->target) { - case V4L2_SEL_TGT_CROP: { - sel->r = *v4l2_subdev_state_get_crop(state, 0); - return 0; - } + struct v4l2_rect *compose; + switch (sel->target) { case V4L2_SEL_TGT_NATIVE_SIZE: + if (sel->pad != IMX219_PAD_IMAGE) + return -EINVAL; + sel->r.top = 0; sel->r.left = 0; sel->r.width = IMX219_NATIVE_WIDTH; @@ -890,11 +955,35 @@ static int imx219_get_selection(struct v4l2_subdev *sd, case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: - sel->r.top = IMX219_PIXEL_ARRAY_TOP; - sel->r.left = IMX219_PIXEL_ARRAY_LEFT; - sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; - sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; + switch (sel->pad) { + case IMX219_PAD_IMAGE: + sel->r.top = IMX219_PIXEL_ARRAY_TOP; + sel->r.left = IMX219_PIXEL_ARRAY_LEFT; + sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; + sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; + return 0; + case IMX219_PAD_SOURCE: + compose = v4l2_subdev_state_get_compose(state, + IMX219_PAD_IMAGE); + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = compose->width; + sel->r.height = compose->height; + return 0; + } + + break; + + case V4L2_SEL_TGT_CROP: + sel->r = *v4l2_subdev_state_get_crop(state, sel->pad); + return 0; + + case V4L2_SEL_TGT_COMPOSE: + if (sel->pad != IMX219_PAD_IMAGE) + return -EINVAL; + + sel->r = *v4l2_subdev_state_get_compose(state, sel->pad); return 0; } @@ -906,7 +995,7 @@ static int imx219_init_state(struct v4l2_subdev *sd, { struct v4l2_subdev_format fmt = { .which = V4L2_SUBDEV_FORMAT_TRY, - .pad = 0, + .pad = IMX219_PAD_SOURCE, .format = { .code = MEDIA_BUS_FMT_SRGGB10_1X10, .width = supported_modes[0].width, @@ -1174,10 +1263,18 @@ static int imx219_probe(struct i2c_client *client) V4L2_SUBDEV_FL_HAS_EVENTS; imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; - /* Initialize source pad */ - imx219->pad.flags = MEDIA_PAD_FL_SOURCE; + /* + * Initialize the pads. To preserve backward compatibility with + * userspace that used the sensor before the introduction of the + * internal image pad, the external source pad is numbered 0 and the + * internal image pad numbered 1. + */ + imx219->pads[IMX219_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + imx219->pads[IMX219_PAD_IMAGE].flags = MEDIA_PAD_FL_SINK + | MEDIA_PAD_FL_INTERNAL; - ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); + ret = media_entity_pads_init(&imx219->sd.entity, + ARRAY_SIZE(imx219->pads), imx219->pads); if (ret) { dev_err(dev, "failed to init entity pads: %d\n", ret); goto error_handler_free;
Use the newly added internal pad API to expose the internal configuration of the sensor to userspace in a standard manner. This also paves the way for adding support for embedded data with an additional internal pad. To maintain compatibility with existing userspace that may operate on pad 0 unconditionally, keep the source pad numbered 0 and number the internal image pad 1. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- 1 file changed, 133 insertions(+), 36 deletions(-)