linux-kernel - [PATCH 14/16] drm/msm/dpu: do not allow YUV formats if no CDM block is present

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Message-ID: <20230830224910.8091-15-quic_abhinavk@quicinc.com>
Date:   Wed, 30 Aug 2023 15:49:07 -0700
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     <freedreno@...ts.freedesktop.org>, Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <quic_jesszhan@...cinc.com>,
        <quic_parellan@...cinc.com>, <quic_khsieh@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 14/16] drm/msm/dpu: do not allow YUV formats if no CDM block is present

On chipsets where CDM block is not available OR where support has
not been added yet do not allow YUV formats for writeback block.

Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
index 7fc174b33ae2..d8edca9bc964 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
@@ -406,6 +406,12 @@ static int dpu_encoder_phys_wb_atomic_check(
 		return ret;
 	}
 
+	if (DPU_FORMAT_IS_YUV(to_dpu_format(msm_framebuffer_format(fb))) &&
+	    !phys_enc->dpu_kms->catalog->cdm) {
+		DPU_ERROR("cannot support YUV formats without CDM block\n");
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
-- 
2.40.1