drm/msm/sde: output black frame during resume operation
This patch provides a module parameter to control whether each
plane outputs the previously configured content or a black frame
during the resume operation. The default is set to output a
black frame.
CRs-Fixed: 2019307
Change-Id: I48c1a8edfa1e85252a070bda51228ef67dea041c
Signed-off-by: Clarence Ip <cip@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_plane.c b/drivers/gpu/drm/msm/sde/sde_plane.c
index f9c55ec..2eb947d 100644
--- a/drivers/gpu/drm/msm/sde/sde_plane.c
+++ b/drivers/gpu/drm/msm/sde/sde_plane.c
@@ -38,6 +38,14 @@
#include "sde_color_processing.h"
#include "sde_hw_rot.h"
+static bool suspend_blank = true;
+module_param(suspend_blank, bool, 0400);
+MODULE_PARM_DESC(suspend_blank,
+ "If set, active planes will force their outputs to black,\n"
+ "by temporarily enabling the color fill, when recovering\n"
+ "from a system resume instead of attempting to display the\n"
+ "last provided frame buffer.");
+
#define SDE_DEBUG_PLANE(pl, fmt, ...) SDE_DEBUG("plane%d " fmt,\
(pl) ? (pl)->base.base.id : -1, ##__VA_ARGS__)
@@ -2895,6 +2903,10 @@
else if (psde->pipe_hw && psde->csc_ptr && psde->pipe_hw->ops.setup_csc)
psde->pipe_hw->ops.setup_csc(psde->pipe_hw, psde->csc_ptr);
+ /* force black color fill during suspend */
+ if (msm_is_suspend_state(plane->dev) && suspend_blank)
+ _sde_plane_color_fill(psde, 0x0, 0x0);
+
/* flag h/w flush complete */
if (plane->state)
to_sde_plane_state(plane->state)->pending = false;