static int uds_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct vsp1_uds *uds = to_uds(subdev);
struct v4l2_mbus_framefmt *format;
format = vsp1_entity_get_pad_format(&uds->entity, cfg,
UDS_PAD_SINK, fse->which);
if (fse->index || fse->code != format->code)
return -EINVAL;
if (fse->pad == UDS_PAD_SINK) {
fse->min_width = UDS_MIN_SIZE;
fse->max_width = UDS_MAX_SIZE;
fse->min_height = UDS_MIN_SIZE;
fse->max_height = UDS_MAX_SIZE;
} else {
uds_output_limits(format->width, &fse->min_width,
&fse->max_width);
uds_output_limits(format->height, &fse->min_height,
&fse->max_height);
}
return 0;
}
static int uds_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
static const unsigned int codes[] = {
MEDIA_BUS_FMT_ARGB8888_1X32,
MEDIA_BUS_FMT_AYUV8_1X32,
};
struct vsp1_uds *uds = to_uds(subdev);
if (code->pad == UDS_PAD_SINK) {
if (code->index >= ARRAY_SIZE(codes))
return -EINVAL;
code->code = codes[code->index];
} else {
struct v4l2_mbus_framefmt *format;
/* The UDS can't perform format conversion, the sink format is
* always identical to the source format.
*/
if (code->index)
return -EINVAL;
format = vsp1_entity_get_pad_format(&uds->entity, cfg,
UDS_PAD_SINK, code->which);
code->code = format->code;
}
return 0;
}
static int uds_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct vsp1_uds *uds = to_uds(subdev);
fmt->format = *vsp1_entity_get_pad_format(&uds->entity, cfg, fmt->pad,
fmt->which);
return 0;
}
static int uds_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct vsp1_uds *uds = to_uds(subdev);
const struct v4l2_mbus_framefmt *output;
const struct v4l2_mbus_framefmt *input;
unsigned int hscale;
unsigned int vscale;
bool multitap;
if (!enable)
return 0;
input = &uds->entity.formats[UDS_PAD_SINK];
output = &uds->entity.formats[UDS_PAD_SOURCE];
hscale = uds_compute_ratio(input->width, output->width);
vscale = uds_compute_ratio(input->height, output->height);
dev_dbg(uds->entity.vsp1->dev, "hscale %u vscale %u\n", hscale, vscale);
/* Multi-tap scaling can't be enabled along with alpha scaling when
* scaling down with a factor lower than or equal to 1/2 in either
* direction.
*/
if (uds->scale_alpha && (hscale >= 8192 || vscale >= 8192))
multitap = false;
else
multitap = true;
vsp1_uds_write(uds, VI6_UDS_CTRL,
(uds->scale_alpha ? VI6_UDS_CTRL_AON : 0) |
(multitap ? VI6_UDS_CTRL_BC : 0));
vsp1_uds_write(uds, VI6_UDS_PASS_BWIDTH,
(uds_passband_width(hscale)
<< VI6_UDS_PASS_BWIDTH_H_SHIFT) |
(uds_passband_width(vscale)
<< VI6_UDS_PASS_BWIDTH_V_SHIFT));
/* Set the scaling ratios and the output size. */
vsp1_uds_write(uds, VI6_UDS_SCALE,
(hscale << VI6_UDS_SCALE_HFRAC_SHIFT) |
(vscale << VI6_UDS_SCALE_VFRAC_SHIFT));
vsp1_uds_write(uds, VI6_UDS_CLIP_SIZE,
(output->width << VI6_UDS_CLIP_SIZE_HSIZE_SHIFT) |
(output->height << VI6_UDS_CLIP_SIZE_VSIZE_SHIFT));
return 0;
}
static int uds_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct vsp1_uds *uds = to_uds(subdev);
struct v4l2_mbus_framefmt *format;
uds_try_format(uds, cfg, fmt->pad, &fmt->format, fmt->which);
format = vsp1_entity_get_pad_format(&uds->entity, cfg, fmt->pad,
fmt->which);
*format = fmt->format;
if (fmt->pad == UDS_PAD_SINK) {
/* Propagate the format to the source pad. */
format = vsp1_entity_get_pad_format(&uds->entity, cfg,
UDS_PAD_SOURCE, fmt->which);
*format = fmt->format;
uds_try_format(uds, cfg, UDS_PAD_SOURCE, format, fmt->which);
}
return 0;
}
