On 19/09/16 15:27, Laurent Pinchart wrote:
> The driver stores in a custom structure named format several pieces of
> information about the format that are available in the DRM core. Remove
> them and get the information from the DRM core instead.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---
> @@ -128,13 +122,13 @@ static const struct drm_framebuffer_funcs
> omap_framebuffer_funcs = {
> };
>
> static uint32_t get_linear_addr(struct plane *plane,
> - const struct format *format, int n, int x, int y)
> + const struct drm_format_info *format, int n, int x, int y)
> {
> uint32_t offset;
>
> - offset = plane->offset +
> - (x * format->planes[n].stride_bpp) +
> - (y * plane->pitch / format->planes[n].sub_y);
> + offset = plane->offset
> + + (x * format->cpp[n] / (n == 1 ? 1 : format->hsub))
> + + (y * plane->pitch / (n == 1 ? 1 : format->vsub));
n is the plane number? Shouldn't the above be (n == 0 ? 1 : format->hsub)?
> @@ -413,28 +410,32 @@ struct drm_framebuffer *omap_framebuffer_init(struct
> drm_device *dev,
>
> fb = &omap_fb->base;
> omap_fb->format = format;
> + omap_fb->dss_format = dss_format;
> mutex_init(&omap_fb->lock);
>
> - for (i = 0; i < n; i++) {
> + for (i = 0; i < format->num_planes; i++) {
> struct plane *plane = &omap_fb->planes[i];
> - int size, pitch = mode_cmd->pitches[i];
> + unsigned int pitch = mode_cmd->pitches[i];
> + unsigned int hsub = i == 0 ? 1 : format->hsub;
> + unsigned int vsub = i == 0 ? 1 : format->vsub;
This makes me wonder... Will all drivers do something like the above?
It's a bit laborious way to get the pixel subsampling factor, and I
presume something like above is quite common so that all the
calculations can be more generic (and not specific to a UV plane).
Tomi
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