Add merge async reset control in mtk_merge_stop. Async hw doesn't do self reset on each sof signal(start of frame), so need to reset the async to clear the hw status for the next merge start.
Signed-off-by: Nancy.Lin nancy.lin@mediatek.com Reviewed-by: CK Hu ck.hu@mediatek.com Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com --- drivers/gpu/drm/mediatek/mtk_disp_merge.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c index 9dca145cfb71..177473fa8160 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c @@ -8,6 +8,7 @@ #include <linux/of_device.h> #include <linux/of_irq.h> #include <linux/platform_device.h> +#include <linux/reset.h> #include <linux/soc/mediatek/mtk-cmdq.h>
#include "mtk_drm_ddp_comp.h" @@ -79,6 +80,9 @@ void mtk_merge_stop(struct device *dev) struct mtk_disp_merge *priv = dev_get_drvdata(dev);
mtk_merge_stop_cmdq(dev, NULL); + + if (priv->async_clk) + device_reset_optional(dev); }
void mtk_merge_start_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)