[2/2] drm/msm/dpu: Wire up needs_dirtyfb

Message ID 20210508195641.397198-3-robdclark@gmail.com
State New
Headers show
Series
  • drm: Fix atomic helper dirtyfb stalls
Related show

Commit Message

Rob Clark May 8, 2021, 7:56 p.m.
From: Rob Clark <robdclark@chromium.org>

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

Comments

houdek.ryan@fex-emu.org May 9, 2021, 3:38 p.m. | #1
I have tested this on my end and it resolves the 120hz problem.

Tested-By: Ryan Houdek <Houdek.Ryan@fex-emu.org>
Rob Clark May 9, 2021, 4:28 p.m. | #2
On Sat, May 8, 2021 at 12:53 PM Rob Clark <robdclark@gmail.com> wrote:
>
> From: Rob Clark <robdclark@chromium.org>
>
> Signed-off-by: Rob Clark <robdclark@chromium.org>
Alex Deucher May 10, 2021, 3:26 p.m. | #3
Sorry, what patch are you referring to?

Alex

On Mon, May 10, 2021 at 4:04 AM <houdek.ryan@fex-emu.org> wrote:
>
> I have tested this on my end and it resolves the 120hz problem.
>
> Tested-By: Ryan Houdek <Houdek.Ryan@fex-emu.org>

Patch

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 5a74f93e29da..868ee6136438 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -143,6 +143,19 @@  static bool dpu_crtc_get_scanout_position(struct drm_crtc *crtc,
 	return true;
 }
 
+static bool dpu_crtc_needs_dirtyfb(struct drm_crtc *crtc)
+{
+	struct drm_encoder *encoder;
+
+	drm_for_each_encoder_mask (encoder, crtc->dev, crtc->state->encoder_mask) {
+		if (dpu_encoder_get_intf_mode(encoder) == INTF_MODE_CMD) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer *mixer,
 		struct dpu_plane_state *pstate, struct dpu_format *format)
 {
@@ -1343,6 +1356,7 @@  static const struct drm_crtc_helper_funcs dpu_crtc_helper_funcs = {
 	.atomic_begin = dpu_crtc_atomic_begin,
 	.atomic_flush = dpu_crtc_atomic_flush,
 	.get_scanout_position = dpu_crtc_get_scanout_position,
+	.needs_dirtyfb = dpu_crtc_needs_dirtyfb,
 };
 
 /* initialize crtc */