Messages in this thread | | | Date | Thu, 11 Mar 2021 12:28:46 +0000 | From | Christoph Hellwig <> | Subject | Re: [PATCH v2 4/5] drm: Add and export function drm_gem_cma_sync_data |
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On Sun, Mar 07, 2021 at 08:28:34PM +0000, Paul Cercueil wrote: > + drm_atomic_for_each_plane_damage(&iter, &clip) { > + for (i = 0; i < finfo->num_planes; i++) { > + daddr = drm_fb_cma_get_gem_addr(state->fb, state, i); > + > + /* Ignore x1/x2 values, invalidate complete lines */ > + offset = clip.y1 * state->fb->pitches[i]; > + > + dma_sync_single_for_device(dev, daddr + offset, > + (clip.y2 - clip.y1) * state->fb->pitches[i], > + DMA_TO_DEVICE);
Are these helpers only ever used to transfer data to the device and never from it? If so please clearly document that.
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