linux-kernel - [PATCH v3 05/11] drm/msm/mdss: Add support for Kaanapali

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Message-Id: <20251215083854.577-6-yuanjie.yang@oss.qualcomm.com>
Date: Mon, 15 Dec 2025 16:38:48 +0800
From: yuanjie yang <yuanjie.yang@....qualcomm.com>
To: robin.clark@....qualcomm.com, lumag@...nel.org, abhinav.kumar@...ux.dev,
        jesszhan0024@...il.com, sean@...rly.run, marijn.suijten@...ainline.org,
        airlied@...il.com, simona@...ll.ch, maarten.lankhorst@...ux.intel.com,
        mripard@...nel.org, tzimmermann@...e.de, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, neil.armstrong@...aro.org,
        yongxing.mou@....qualcomm.com, konrad.dybcio@....qualcomm.com
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, tingwei.zhang@....qualcomm.com,
        aiqun.yu@....qualcomm.com
Subject: [PATCH v3 05/11] drm/msm/mdss: Add support for Kaanapali

From: Yuanjie Yang <yuanjie.yang@....qualcomm.com>

Add mdss support for the Qualcomm Kaanapali platform.

Co-developed-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
Signed-off-by: Yuanjie Yang <yuanjie.yang@....qualcomm.com>
---
 drivers/gpu/drm/msm/msm_mdss.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
index bf9a33e925ac..cd330870a6fb 100644
--- a/drivers/gpu/drm/msm/msm_mdss.c
+++ b/drivers/gpu/drm/msm/msm_mdss.c
@@ -239,7 +239,11 @@ static void msm_mdss_setup_ubwc_dec_50(struct msm_mdss *msm_mdss)
 
 	writel_relaxed(value, msm_mdss->mmio + REG_MDSS_UBWC_STATIC);
 
-	writel_relaxed(4, msm_mdss->mmio + REG_MDSS_UBWC_CTRL_2);
+	if (data->ubwc_dec_version == UBWC_5_0)
+		writel_relaxed(4, msm_mdss->mmio + REG_MDSS_UBWC_CTRL_2);
+	else
+		writel_relaxed(5, msm_mdss->mmio + REG_MDSS_UBWC_CTRL_2);
+
 	writel_relaxed(1, msm_mdss->mmio + REG_MDSS_UBWC_PREDICTION_MODE);
 }
 
@@ -296,6 +300,9 @@ static int msm_mdss_enable(struct msm_mdss *msm_mdss)
 	case UBWC_5_0:
 		msm_mdss_setup_ubwc_dec_50(msm_mdss);
 		break;
+	case UBWC_6_0:
+		msm_mdss_setup_ubwc_dec_50(msm_mdss);
+		break;
 	default:
 		dev_err(msm_mdss->dev, "Unsupported UBWC decoder version %x\n",
 			msm_mdss->mdss_data->ubwc_dec_version);
@@ -552,6 +559,7 @@ static const struct msm_mdss_data data_153k6 = {
 };
 
 static const struct of_device_id mdss_dt_match[] = {
+	{ .compatible = "qcom,kaanapali-mdss", .data = &data_57k },
 	{ .compatible = "qcom,mdss", .data = &data_153k6 },
 	{ .compatible = "qcom,glymur-mdss", .data = &data_57k },
 	{ .compatible = "qcom,msm8998-mdss", .data = &data_76k8 },
-- 
2.34.1