Add callbacks for atomic_destroy_state, atomic_duplicate_state and
atomic_reset to restore functionality of the DSI driver: this solves
vblank timeouts when another bridge is present in the chain.
Tested bridge chain: DSI <=> ANX7625 => aux-bus panel
Fixes: 7f6335c6a258 ("drm/mediatek: Modify dsi funcs to atomic operations")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
Note: The commit that has been mentioned in the Fixes tag should
*not* have my Reviewed-by tag, as the author changed it but
erroneously retained the tag that I had released for an
earlier version of that commit (which was fine, but the new
version broke mtk_dsi!).
drivers/gpu/drm/mediatek/mtk_dsi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 9cc406e1eee1..5b624e0f5b0a 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -808,10 +808,13 @@ static void mtk_dsi_bridge_atomic_post_disable(struct drm_bridge *bridge,
static const struct drm_bridge_funcs mtk_dsi_bridge_funcs = {
.attach = mtk_dsi_bridge_attach,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_disable = mtk_dsi_bridge_atomic_disable,
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_enable = mtk_dsi_bridge_atomic_enable,
.atomic_pre_enable = mtk_dsi_bridge_atomic_pre_enable,
.atomic_post_disable = mtk_dsi_bridge_atomic_post_disable,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
.mode_set = mtk_dsi_bridge_mode_set,
};
--
2.35.1
