> > +
> > + if (fb->pixel_format == DRM_FORMAT_NV12) {
> > + int height_in_mem = (fb->offsets[1]/fb->pitches[0]);
> > + /*
> > + * If UV starts from middle of a page, then UV start
> should
> > + * be programmed to beginning of that page. And offset
> into that
> > + * page to be programmed into y-offset
> > + */
> > + tile_row_adjustment = height_in_mem % tile_height;
> > + aux_dist = fb->pitches[0] * (height_in_mem -
> tile_row_adjustment);
> > + aux_x_offset = DIV_ROUND_UP(x, 2);
> > + aux_y_offset = DIV_ROUND_UP(y, 2) +
> tile_row_adjustment;
> > + /* For tile-Yf, uv-subplane tile width is 2x of Y-subplane
> */
> > + aux_stride = fb->modifier[0] ==
> I915_FORMAT_MOD_Yf_TILED ?
> > + stride / 2 : stride;
>
> The 2x part was rather well hidden in the spec. How do we deal with
> cases when the Y stride is an odd number of tiles?
It should be a round up division to take care of that scenario.
Fixing this and resolving your other comments.
Will be sending updated patches shortly.
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