drm: xlnx: zynqmp: Use drm helpers when calculating buffer sizes

Use drm helpers, drm_format_info_plane_width(),
drm_format_info_plane_height() and drm_format_info_min_pitch() to
calculate sizes for the DMA.

This cleans up the code, but also makes it possible to support more
complex formats (like P030, P230).

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260423-xilinx-formats-v10-7-c690c2b8ea89@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 9a8f38230cb4e313df788b4a62602b72f982c9a0..12a8d643915f99c91ef9dd90c240f49d7e8aaa07 100644 (file)
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -1116,16 +1116,19 @@ int zynqmp_disp_layer_update(struct zynqmp_disp_layer *layer,
                return 0;
 
        for (i = 0; i < info->num_planes; i++) {
-               unsigned int width = state->crtc_w / (i ? info->hsub : 1);
-               unsigned int height = state->crtc_h / (i ? info->vsub : 1);
                struct zynqmp_disp_layer_dma *dma = &layer->dmas[i];
                struct dma_async_tx_descriptor *desc;
                dma_addr_t dma_addr;
+               unsigned int width;
+               unsigned int height;
+
+               width = drm_format_info_plane_width(info, state->crtc_w, i);
+               height = drm_format_info_plane_height(info, state->crtc_h, i);
 
                dma_addr = drm_fb_dma_get_gem_addr(state->fb, state, i);
 
                dma->xt.numf = height;
-               dma->sgl.size = width * info->cpp[i];
+               dma->sgl.size = drm_format_info_min_pitch(info, i, width);
                dma->sgl.icg = state->fb->pitches[i] - dma->sgl.size;
                dma->xt.src_start = dma_addr;
                dma->xt.frame_size = 1;