On Thu, Oct 23, 2025 at 03:53:53PM +0800, yuanjie yang wrote:
> From: Yuanjie Yang <[email protected]>
>
> Add mdss support for the Qualcomm Kaanapali platform.
>
> Signed-off-by: Yongxing Mou <[email protected]>
> Signed-off-by: Yuanjie Yang <[email protected]>
> ---
> drivers/gpu/drm/msm/msm_mdss.c | 22 ++++++++++++++++++++++
> include/linux/soc/qcom/ubwc.h | 1 +
> 2 files changed, 23 insertions(+)
Where can I find the UBWC config for Kaanapali?
>
> diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
> index 2d0e3e784c04..665751d2b999 100644
> --- a/drivers/gpu/drm/msm/msm_mdss.c
> +++ b/drivers/gpu/drm/msm/msm_mdss.c
> @@ -243,6 +243,24 @@ static void msm_mdss_setup_ubwc_dec_50(struct msm_mdss
> *msm_mdss)
> writel_relaxed(1, msm_mdss->mmio + REG_MDSS_UBWC_PREDICTION_MODE);
> }
>
> +static void msm_mdss_setup_ubwc_dec_60(struct msm_mdss *msm_mdss)
> +{
> + const struct qcom_ubwc_cfg_data *data = msm_mdss->mdss_data;
> + u32 value = MDSS_UBWC_STATIC_UBWC_SWIZZLE(data->ubwc_swizzle) |
> + MDSS_UBWC_STATIC_HIGHEST_BANK_BIT(data->highest_bank_bit);
> +
> + if (data->ubwc_bank_spread)
> + value |= MDSS_UBWC_STATIC_UBWC_BANK_SPREAD;
> +
> + if (data->macrotile_mode)
> + value |= MDSS_UBWC_STATIC_MACROTILE_MODE;
> +
> + writel_relaxed(value, msm_mdss->mmio + REG_MDSS_UBWC_STATIC);
> +
> + writel_relaxed(5, msm_mdss->mmio + REG_MDSS_UBWC_CTRL_2);
> + writel_relaxed(1, msm_mdss->mmio + REG_MDSS_UBWC_PREDICTION_MODE);
> +}
> +
> static int msm_mdss_enable(struct msm_mdss *msm_mdss)
> {
> int ret, i;
> @@ -296,6 +314,9 @@ 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_60(msm_mdss);
> + break;
> default:
> dev_err(msm_mdss->dev, "Unsupported UBWC decoder version %x\n",
> msm_mdss->mdss_data->ubwc_dec_version);
> @@ -552,6 +573,7 @@ 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,msm8998-mdss", .data = &data_76k8 },
> { .compatible = "qcom,qcm2290-mdss", .data = &data_76k8 },
> diff --git a/include/linux/soc/qcom/ubwc.h b/include/linux/soc/qcom/ubwc.h
> index 1ed8b1b16bc9..0a4edfe3d96d 100644
> --- a/include/linux/soc/qcom/ubwc.h
> +++ b/include/linux/soc/qcom/ubwc.h
> @@ -52,6 +52,7 @@ struct qcom_ubwc_cfg_data {
> #define UBWC_4_0 0x40000000
> #define UBWC_4_3 0x40030000
> #define UBWC_5_0 0x50000000
> +#define UBWC_6_0 0x60000000
This should be tied with the ubwc config changes as this chunk goes into
a different subsystem.
>
> #if IS_ENABLED(CONFIG_QCOM_UBWC_CONFIG)
> const struct qcom_ubwc_cfg_data *qcom_ubwc_config_get_data(void);
> --
> 2.34.1
>
--
With best wishes
Dmitry
