On Mon, Dec 15, 2025 at 04:38:48PM +0800, yuanjie yang wrote:
> From: Yuanjie Yang <[email protected]>
>
> Add mdss support for the Qualcomm Kaanapali platform.
>
> Co-developed-by: Yongxing Mou <[email protected]>
> Signed-off-by: Yongxing Mou <[email protected]>
> Signed-off-by: Yuanjie Yang <[email protected]>
> ---
> 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)
This is the _dec_50 function, you can't make UBWC_5_0 into a special
case.
> + 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
>
--
With best wishes
Dmitry
