Re: [PATCH 3/4] drm/msm/dpu: Add SC8180x to hw catalog

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Wed 12 May 17:58 CDT 2021, Dmitry Baryshkov wrote:

> On Tue, 11 May 2021 at 07:19, Bjorn Andersson
> <bjorn.andersson@linaro.org> wrote:
> >
> > From: Rob Clark <robdclark@chromium.org>
> >
> > Add SC8180x to the hardware catalog, for initial support for the
> > platform. Due to limitations in the DP driver only one of the four DP
> > interfaces is left enabled.
> >
> > The SC8180x platform supports the newly added DPU_INTF_WIDEBUS flag and
> > the Windows-on-Snapdragon bootloader leaves the widebus bit set, so this
> > is flagged appropriately to ensure widebus is disabled - for now.
> >
> > Signed-off-by: Rob Clark <robdclark@chromium.org>
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> > ---
> >  .../devicetree/bindings/display/msm/dpu.txt   |   4 +-
> >  .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c    | 121 ++++++++++++++++++
> >  .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h    |   3 +
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c       |   1 +
> >  drivers/gpu/drm/msm/msm_drv.c                 |   1 +
> >  5 files changed, 128 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
> > index 586e6eac5b08..b98258374a60 100644
> > --- a/Documentation/devicetree/bindings/display/msm/dpu.txt
> > +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
> > @@ -8,7 +8,7 @@ The DPU display controller is found in SDM845 SoC.
> >
> >  MDSS:
> >  Required properties:
> > -- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
> > +- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss", "qcom,sc8180x-mdss"
> >  - reg: physical base address and length of controller's registers.
> >  - reg-names: register region names. The following region is required:
> >    * "mdss"
> > @@ -41,7 +41,7 @@ Optional properties:
> >
> >  MDP:
> >  Required properties:
> > -- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu"
> > +- compatible: "qcom,sdm845-dpu", "qcom,sc7180-dpu", "qcom,sc8180x-dpu"
> >  - reg: physical base address and length of controller's registers.
> >  - reg-names : register region names. The following region is required:
> >    * "mdp"
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > index b569030a0847..81c429ce94a9 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > @@ -56,6 +56,10 @@
> >
> >  #define INTF_SC7280_MASK INTF_SC7180_MASK | BIT(DPU_DATA_HCTL_EN)
> >
> > +#define INTF_SC8180X_MASK BIT(DPU_INTF_INPUT_CTRL) | \
> > +                         BIT(DPU_INTF_TE) | \
> > +                         BIT(DPU_INTF_WIDEBUS)
> > +
> >  #define INTR_SC7180_MASK \
> >         (BIT(DPU_IRQ_TYPE_PING_PONG_RD_PTR) |\
> >         BIT(DPU_IRQ_TYPE_PING_PONG_WR_PTR) |\
> > @@ -197,6 +201,22 @@ static const struct dpu_caps sm8150_dpu_caps = {
> >         .max_vdeci_exp = MAX_VERT_DECIMATION,
> >  };
> >
> > +static const struct dpu_caps sc8180_dpu_caps = {
> > +       .max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
> > +       .max_mixer_blendstages = 0xb,
> > +       .qseed_type = DPU_SSPP_SCALER_QSEED3,
> 
> Is it qseed3 or qseed3lite?
> 
> > +       .smart_dma_rev = DPU_SSPP_SMART_DMA_V2, /* TODO: v2.5 */
> > +       .ubwc_version = DPU_HW_UBWC_VER_30,
> > +       .has_src_split = true,
> > +       .has_dim_layer = true,
> > +       .has_idle_pc = true,
> > +       .has_3d_merge = false,   /* I think? */
> 
> Hmm. Are you sure? Judging from two DSI interfaces you might have merge3d.
> 
> > +       .max_linewidth = 4096,
> > +       .pixel_ram_size = DEFAULT_PIXEL_RAM_SIZE,
> > +       .max_hdeci_exp = MAX_HORZ_DECIMATION,
> > +       .max_vdeci_exp = MAX_VERT_DECIMATION,
> > +};
> > +
> >  static const struct dpu_caps sm8250_dpu_caps = {
> >         .max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
> >         .max_mixer_blendstages = 0xb,
> > @@ -265,6 +285,35 @@ static const struct dpu_mdp_cfg sc7180_mdp[] = {
> >         },
> >  };
> >
> > +static const struct dpu_mdp_cfg sc8180_mdp[] = {
> > +       {
> > +       .name = "top_0", .id = MDP_TOP,
> > +       // TODO check len
> > +       .base = 0x0, .len = 0x45C,
> > +       .features = 0,
> > +       .highest_bank_bit = 0x3,
> > +       .clk_ctrls[DPU_CLK_CTRL_VIG0] = {
> > +                       .reg_off = 0x2AC, .bit_off = 0},
> > +       .clk_ctrls[DPU_CLK_CTRL_VIG1] = {
> > +                       .reg_off = 0x2B4, .bit_off = 0},
> > +       .clk_ctrls[DPU_CLK_CTRL_VIG2] = {
> > +                       .reg_off = 0x2BC, .bit_off = 0},
> > +       .clk_ctrls[DPU_CLK_CTRL_VIG3] = {
> > +                       .reg_off = 0x2C4, .bit_off = 0},
> > +       .clk_ctrls[DPU_CLK_CTRL_DMA0] = {
> > +                       .reg_off = 0x2AC, .bit_off = 8},
> > +       .clk_ctrls[DPU_CLK_CTRL_DMA1] = {
> > +                       .reg_off = 0x2B4, .bit_off = 8},
> > +       .clk_ctrls[DPU_CLK_CTRL_CURSOR0] = {
> > +                       .reg_off = 0x2BC, .bit_off = 8},
> > +       .clk_ctrls[DPU_CLK_CTRL_CURSOR1] = {
> > +                       .reg_off = 0x2C4, .bit_off = 8},
> > +// TODO ???
> > +//     .clk_ctrls[DPU_CLK_CTRL_REG_DMA] = {
> > +//                     .reg_off = 0x2BC, .bit_off = 20},
> > +       },
> > +};
> > +
> >  static const struct dpu_mdp_cfg sm8250_mdp[] = {
> >         {
> >         .name = "top_0", .id = MDP_TOP,
> > @@ -789,6 +838,15 @@ static const struct dpu_intf_cfg sc7280_intf[] = {
> >         INTF_BLK("intf_5", INTF_5, 0x39000, INTF_EDP, 0, 24, INTF_SC7280_MASK),
> >  };
> >
> > +static const struct dpu_intf_cfg sc8180x_intf[] = {
> > +//     INTF_BLK("intf_0", INTF_0, 0x6A000, INTF_DP, 0, 24, INTF_SC8180X_MASK),
> > +       INTF_BLK("intf_1", INTF_1, 0x6A800, INTF_DSI, 0, 24, INTF_SC8180X_MASK),
> > +       INTF_BLK("intf_2", INTF_2, 0x6B000, INTF_DSI, 1, 24, INTF_SC8180X_MASK),
> > +//     INTF_BLK("intf_3", INTF_3, 0x6B800, INTF_DP, 1, 24, INTF_SC8180X_MASK),
> > +//     INTF_BLK("intf_4", INTF_4, 0x6C000, INTF_DP, 2, 24, INTF_SC8180X_MASK),
> > +       INTF_BLK("intf_5", INTF_5, 0x6C800, INTF_DP, 0, 24, INTF_SC8180X_MASK),
> 
> Hmm. I think this should be INTF_EDP (or the _ctrl_id should be 1).
> 

Right, INTF_5 is wired to the EDP controller. But that prevents it from
being paired with the dp controller. I will have to dig into the
matching further to figure out how to fix this.

Thanks for your feedback.

Regards,
Bjorn

> > +};
> > +
> >  /*************************************************************
> >   * VBIF sub blocks config
> >   *************************************************************/
> > @@ -859,6 +917,10 @@ static const struct dpu_qos_lut_entry sm8150_qos_linear[] = {
> >         {.fl = 0, .lut = 0x0011222222223357 },
> >  };
> >
> > +static const struct dpu_qos_lut_entry sc8180_qos_linear[] = {
> > +       {.fl = 4, .lut = 0x0000000000000357 },
> > +};
> > +
> >  static const struct dpu_qos_lut_entry sdm845_qos_macrotile[] = {
> >         {.fl = 10, .lut = 0x344556677},
> >         {.fl = 11, .lut = 0x3344556677},
> > @@ -872,6 +934,10 @@ static const struct dpu_qos_lut_entry sc7180_qos_macrotile[] = {
> >         {.fl = 0, .lut = 0x0011223344556677},
> >  };
> >
> > +static const struct dpu_qos_lut_entry sc8180_qos_macrotile[] = {
> > +       {.fl = 10, .lut = 0x0000000344556677},
> > +};
> > +
> >  static const struct dpu_qos_lut_entry sdm845_qos_nrt[] = {
> >         {.fl = 0, .lut = 0x0},
> >  };
> > @@ -976,6 +1042,31 @@ static const struct dpu_perf_cfg sm8150_perf_data = {
> >         .bw_inefficiency_factor = 120,
> >  };
> >
> > +static const struct dpu_perf_cfg sc8180_perf_data = {
> > +       .max_bw_low = 9600000,
> > +       .max_bw_high = 9600000,
> > +       .min_core_ib = 2400000,
> > +       .min_llcc_ib = 800000,
> > +       .min_dram_ib = 800000,
> > +       .danger_lut_tbl = {0xf, 0xffff, 0x0, 0x0},
> > +       .qos_lut_tbl = {
> > +               {.nentry = ARRAY_SIZE(sc8180_qos_linear),
> > +               .entries = sc8180_qos_linear
> > +               },
> > +               {.nentry = ARRAY_SIZE(sc8180_qos_macrotile),
> > +               .entries = sc8180_qos_macrotile
> > +               },
> > +               {.nentry = ARRAY_SIZE(sc7180_qos_nrt),
> > +               .entries = sc7180_qos_nrt
> > +               },
> > +               /* TODO: macrotile-qseed is different from macrotile */
> > +       },
> > +       .cdp_cfg = {
> > +               {.rd_enable = 1, .wr_enable = 1},
> > +               {.rd_enable = 1, .wr_enable = 0}
> > +       },
> 
> Could you please add .clk_inefficiency_factor / .bw_inefficiency_factor
> 
> > +};
> > +
> >  static const struct dpu_perf_cfg sm8250_perf_data = {
> >         .max_bw_low = 13700000,
> >         .max_bw_high = 16600000,
> > @@ -1129,6 +1220,35 @@ static void sm8150_cfg_init(struct dpu_mdss_cfg *dpu_cfg)
> >         };
> >  }
> >
> > +/*
> > + * sc8180_cfg_init(): populate sc8180 dpu sub-blocks reg offsets
> > + * and instance counts.
> > + */
> > +static void sc8180_cfg_init(struct dpu_mdss_cfg *dpu_cfg)
> > +{
> > +       *dpu_cfg = (struct dpu_mdss_cfg){
> > +               .caps = &sc8180_dpu_caps,
> > +               .mdp_count = ARRAY_SIZE(sc8180_mdp),
> > +               .mdp = sc8180_mdp,
> > +               .ctl_count = ARRAY_SIZE(sm8150_ctl),
> > +               .ctl = sm8150_ctl,
> > +               .sspp_count = ARRAY_SIZE(sdm845_sspp),
> > +               .sspp = sdm845_sspp,
> > +               .mixer_count = ARRAY_SIZE(sm8150_lm),
> > +               .mixer = sm8150_lm,
> > +               .pingpong_count = ARRAY_SIZE(sm8150_pp),
> > +               .pingpong = sm8150_pp,
> > +               .intf_count = ARRAY_SIZE(sc8180x_intf),
> > +               .intf = sc8180x_intf,
> > +               .vbif_count = ARRAY_SIZE(sdm845_vbif),
> > +               .vbif = sdm845_vbif,
> > +               .reg_dma_count = 1,
> > +               .dma_cfg = sm8150_regdma,
> > +               .perf = sc8180_perf_data,
> > +               .mdss_irqs = 0x3ff,
> > +       };
> > +}
> > +
> >  /*
> >   * sm8250_cfg_init(): populate sm8250 dpu sub-blocks reg offsets
> >   * and instance counts.
> > @@ -1191,6 +1311,7 @@ static const struct dpu_mdss_hw_cfg_handler cfg_handler[] = {
> >         { .hw_rev = DPU_HW_VER_401, .cfg_init = sdm845_cfg_init},
> >         { .hw_rev = DPU_HW_VER_500, .cfg_init = sm8150_cfg_init},
> >         { .hw_rev = DPU_HW_VER_501, .cfg_init = sm8150_cfg_init},
> > +       { .hw_rev = DPU_HW_VER_510, .cfg_init = sc8180_cfg_init},
> >         { .hw_rev = DPU_HW_VER_600, .cfg_init = sm8250_cfg_init},
> >         { .hw_rev = DPU_HW_VER_620, .cfg_init = sc7180_cfg_init},
> >         { .hw_rev = DPU_HW_VER_720, .cfg_init = sc7280_cfg_init},
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > index c2f34a4f82d9..644e315df0fb 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > @@ -39,6 +39,7 @@
> >  #define DPU_HW_VER_410 DPU_HW_VER(4, 1, 0) /* sdm670 v1.0 */
> >  #define DPU_HW_VER_500 DPU_HW_VER(5, 0, 0) /* sm8150 v1.0 */
> >  #define DPU_HW_VER_501 DPU_HW_VER(5, 0, 1) /* sm8150 v2.0 */
> > +#define DPU_HW_VER_510 DPU_HW_VER(5, 1, 1) /* sc8180 */
> >  #define DPU_HW_VER_600 DPU_HW_VER(6, 0, 0) /* sm8250 */
> >  #define DPU_HW_VER_620 DPU_HW_VER(6, 2, 0) /* sc7180 v1.0 */
> >  #define DPU_HW_VER_720 DPU_HW_VER(7, 2, 0) /* sc7280 */
> > @@ -287,6 +288,8 @@ enum dpu_qos_lut_usage {
> >         DPU_QOS_LUT_USAGE_LINEAR,
> >         DPU_QOS_LUT_USAGE_MACROTILE,
> >         DPU_QOS_LUT_USAGE_NRT,
> > +       DPU_QOS_LUT_USAGE_CWB,
> > +       DPU_QOS_LUT_USAGE_MACROTILE_QSEED,
> >         DPU_QOS_LUT_USAGE_MAX,
> >  };
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > index 8b01cb660381..7e8f0df2bd88 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> > @@ -1228,6 +1228,7 @@ static const struct of_device_id dpu_dt_match[] = {
> >         { .compatible = "qcom,sdm845-dpu", },
> >         { .compatible = "qcom,sc7180-dpu", },
> >         { .compatible = "qcom,sc7280-dpu", },
> > +       { .compatible = "qcom,sc8180x-dpu", },
> >         { .compatible = "qcom,sm8150-dpu", },
> >         { .compatible = "qcom,sm8250-dpu", },
> >         {}
> > diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> > index e1104d2454e2..b5bcbf5c2306 100644
> > --- a/drivers/gpu/drm/msm/msm_drv.c
> > +++ b/drivers/gpu/drm/msm/msm_drv.c
> > @@ -1342,6 +1342,7 @@ static const struct of_device_id dt_match[] = {
> >         { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
> >         { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
> >         { .compatible = "qcom,sc7280-mdss", .data = (void *)KMS_DPU },
> > +       { .compatible = "qcom,sc8180x-mdss", .data = (void *)KMS_DPU },
> >         { .compatible = "qcom,sm8150-mdss", .data = (void *)KMS_DPU },
> >         { .compatible = "qcom,sm8250-mdss", .data = (void *)KMS_DPU },
> >         {}
> > --
> > 2.29.2
> >
> 
> 
> -- 
> With best wishes
> Dmitry