[PATCH v16 14/22] drm/mediatek: add display merge async reset control
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STALE1645d
SUPERSEDED: 3 (2M)
From: Nancy.Lin <hidden>
Date: 2022-03-18 14:21:49
Also in:
dri-devel, linux-mediatek, llvm
Subsystem:
drm drivers, drm drivers for mediatek, the rest · Maintainers:
David Airlie, Simona Vetter, Chun-Kuang Hu, Philipp Zabel, Linus Torvalds
Revision v16 of 22 in this series; 2 review trailers.
Revisions (22)
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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 <redacted> Reviewed-by: CK Hu <redacted> 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)
--
2.18.0
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