linux-kernel - [PATCH v3 2/4] drm/msm/dpu: add DSPPs into reservation upon a CTM request

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Message-Id: <1675863724-28412-3-git-send-email-quic_kalyant@quicinc.com>
Date:   Wed,  8 Feb 2023 05:42:02 -0800
From:   Kalyan Thota <quic_kalyant@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Kalyan Thota <quic_kalyant@...cinc.com>,
        linux-kernel@...r.kernel.org, robdclark@...omium.org,
        dianders@...omium.org, swboyd@...omium.org,
        quic_vpolimer@...cinc.com, dmitry.baryshkov@...aro.org,
        quic_abhinavk@...cinc.com, marijn.suijten@...ainline.org
Subject: [PATCH v3 2/4] drm/msm/dpu: add DSPPs into reservation upon a CTM request

Add DSPP blocks into the topology for reservation, if there
is a CTM request for that composition.

Signed-off-by: Kalyan Thota <quic_kalyant@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
Changes in v1:
- Minor nits (Dmitry)

Changes in v2:
- Populate DSPPs into the reservation only if CTM is requested (Dmitry)
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 9c6817b..46d2a5c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -545,7 +545,8 @@ bool dpu_encoder_use_dsc_merge(struct drm_encoder *drm_enc)
 static struct msm_display_topology dpu_encoder_get_topology(
 			struct dpu_encoder_virt *dpu_enc,
 			struct dpu_kms *dpu_kms,
-			struct drm_display_mode *mode)
+			struct drm_display_mode *mode,
+			struct drm_crtc_state *crtc_state)
 {
 	struct msm_display_topology topology = {0};
 	int i, intf_count = 0;
@@ -563,8 +564,7 @@ static struct msm_display_topology dpu_encoder_get_topology(
 	 * 1 LM, 1 INTF
 	 * 2 LM, 1 INTF (stream merge to support high resolution interfaces)
 	 *
-	 * Adding color blocks only to primary interface if available in
-	 * sufficient number
+	 * Add dspps to the reservation requirements if ctm is requested
 	 */
 	if (intf_count == 2)
 		topology.num_lm = 2;
@@ -573,11 +573,8 @@ static struct msm_display_topology dpu_encoder_get_topology(
 	else
 		topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1;
 
-	if (dpu_enc->disp_info.intf_type == DRM_MODE_ENCODER_DSI) {
-		if (dpu_kms->catalog->dspp &&
-			(dpu_kms->catalog->dspp_count >= topology.num_lm))
-			topology.num_dspp = topology.num_lm;
-	}
+	if (crtc_state->ctm)
+		topology.num_dspp = topology.num_lm;
 
 	topology.num_enc = 0;
 	topology.num_intf = intf_count;
@@ -643,7 +640,7 @@ static int dpu_encoder_virt_atomic_check(
 		}
 	}
 
-	topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode);
+	topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state);
 
 	/* Reserve dynamic resources now. */
 	if (!ret) {
-- 
2.7.4