* [PATCH AUTOSEL 4.19 124/192] drm/amd/display: Don't re-program planes for DPMS changes
[not found] ` <20190327181025.13507-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
@ 2019-03-27 18:09 ` Sasha Levin
2019-03-27 18:09 ` [PATCH AUTOSEL 4.19 153/192] drm/amd/display: Enable vblank interrupt during CRC capture Sasha Levin
1 sibling, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2019-03-27 18:09 UTC (permalink / raw)
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA,
stable-u79uwXL29TY76Z2rM5mHXA
Cc: Alex Deucher, Sasha Levin,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, Nicholas Kazlauskas,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
[ Upstream commit 5062b797db4103218fa00ee254417b8ecaab7401 ]
[Why]
There are opt1c lock warnings and CRTC read timeouts when running the
"igt@kms_plane@plane-position-hole-dpms-pipe-*" tests. These are
caused by trying to reprogram planes that are not in the current
context.
DPMS off removes the stream from the context. In this case:
new_crtc_state->active_changed = true
new_crtc_state->mode_changed = false
The planes are reprogrammed before the stream is removed from the
context because stream_state->mode_changed = false.
For DPMS adds the stream and planes back to the context:
new_crtc_state->active_changed = true
new_crtc_state->mode_changed = false
The planes are also reprogrammed here before the stream is added to the
context because stream_state->mode_changed = true. They were not
previously in the current context so warnings occur here.
[How]
Set stream_state->mode_changed = true when
new_crtc_state->active_changed = true too.
This prevents reprogramming before the context is applied in DC. The
programming will be done after the context is applied.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index c5ba9128b736..c57e85f08e23 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4368,7 +4368,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
static void amdgpu_dm_crtc_copy_transient_flags(struct drm_crtc_state *crtc_state,
struct dc_stream_state *stream_state)
{
- stream_state->mode_changed = crtc_state->mode_changed;
+ stream_state->mode_changed =
+ crtc_state->mode_changed || crtc_state->active_changed;
}
static int amdgpu_dm_atomic_commit(struct drm_device *dev,
--
2.19.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 4.19 153/192] drm/amd/display: Enable vblank interrupt during CRC capture
[not found] ` <20190327181025.13507-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-03-27 18:09 ` [PATCH AUTOSEL 4.19 124/192] drm/amd/display: Don't re-program planes for DPMS changes Sasha Levin
@ 2019-03-27 18:09 ` Sasha Levin
1 sibling, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2019-03-27 18:09 UTC (permalink / raw)
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA,
stable-u79uwXL29TY76Z2rM5mHXA
Cc: Alex Deucher, Sasha Levin,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, Nicholas Kazlauskas,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
[ Upstream commit 428da2bdb05d76c48d0bd8fbfa2e4c102685be08 ]
[Why]
In order to read CRC events when CRC capture is enabled the vblank
interrput handler needs to be running for the CRTC. The handler is
enabled while there is an active vblank reference.
When running IGT tests there will often be no active vblank reference
but the test expects to read a CRC value. This is valid usage (and
works on i915 since they have a CRC interrupt handler) so the reference
to the vblank should be grabbed while capture is active.
This issue was found running:
igt@kms_plane_multiple@atomic-pipe-b-tiling-none
The pipe-b is the only one in the initial commit and was not previously
active so no vblank reference is grabbed. The vblank interrupt is
not enabled and the test times out.
[How]
Keep a reference to the vblank as long as CRC capture is enabled.
If userspace never explicitly disables it then the reference is
also dropped when removing the CRTC from the context (stream = NULL).
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 14 ++++++-
.../drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 42 +++++++++----------
2 files changed, 34 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index c57e85f08e23..2b8b892eb846 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4390,10 +4390,22 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
*/
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
struct dm_crtc_state *dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
+ struct dm_crtc_state *dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
- if (drm_atomic_crtc_needs_modeset(new_crtc_state) && dm_old_crtc_state->stream)
+ if (drm_atomic_crtc_needs_modeset(new_crtc_state)
+ && dm_old_crtc_state->stream) {
+ /*
+ * CRC capture was enabled but not disabled.
+ * Release the vblank reference.
+ */
+ if (dm_new_crtc_state->crc_enabled) {
+ drm_crtc_vblank_put(crtc);
+ dm_new_crtc_state->crc_enabled = false;
+ }
+
manage_dm_interrupts(adev, acrtc, false);
+ }
}
/* Add check here for SoC's that support hardware cursor plane, to
* unset legacy_cursor_update */
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
index 6a6d977ddd7a..36a0bed9af07 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
@@ -51,6 +51,7 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
{
struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state);
struct dc_stream_state *stream_state = crtc_state->stream;
+ bool enable;
enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name);
@@ -65,28 +66,27 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
return -EINVAL;
}
+ enable = (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO);
+
+ if (!dc_stream_configure_crc(stream_state->ctx->dc, stream_state,
+ enable, enable))
+ return -EINVAL;
+
/* When enabling CRC, we should also disable dithering. */
- if (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO) {
- if (dc_stream_configure_crc(stream_state->ctx->dc,
- stream_state,
- true, true)) {
- crtc_state->crc_enabled = true;
- dc_stream_set_dither_option(stream_state,
- DITHER_OPTION_TRUN8);
- }
- else
- return -EINVAL;
- } else {
- if (dc_stream_configure_crc(stream_state->ctx->dc,
- stream_state,
- false, false)) {
- crtc_state->crc_enabled = false;
- dc_stream_set_dither_option(stream_state,
- DITHER_OPTION_DEFAULT);
- }
- else
- return -EINVAL;
- }
+ dc_stream_set_dither_option(stream_state,
+ enable ? DITHER_OPTION_TRUN8
+ : DITHER_OPTION_DEFAULT);
+
+ /*
+ * Reading the CRC requires the vblank interrupt handler to be
+ * enabled. Keep a reference until CRC capture stops.
+ */
+ if (!crtc_state->crc_enabled && enable)
+ drm_crtc_vblank_get(crtc);
+ else if (crtc_state->crc_enabled && !enable)
+ drm_crtc_vblank_put(crtc);
+
+ crtc_state->crc_enabled = enable;
*values_cnt = 3;
/* Reset crc_skipped on dm state */
--
2.19.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread