Re: [PATCH v1 11/11] soc: mediatek: Add MT8183 scpsys support

[Nicolas Boichat]

On Mon, Nov 5, 2018 at 10:43 PM Weiyi Lu <weiyi.lu@xxxxxxxxxxxx> wrote:
>
> Add scpsys driver for MT8183
>
> Signed-off-by: Weiyi Lu <weiyi.lu@xxxxxxxxxxxx>
> ---
>  drivers/soc/mediatek/mtk-scpsys.c | 226 ++++++++++++++++++++++++++++++
>  1 file changed, 226 insertions(+)
>
> diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> index 80be2e05e4e0..57b9f04a69de 100644
> --- a/drivers/soc/mediatek/mtk-scpsys.c
> +++ b/drivers/soc/mediatek/mtk-scpsys.c
> @@ -29,6 +29,7 @@
>  #include <dt-bindings/power/mt7622-power.h>
>  #include <dt-bindings/power/mt7623a-power.h>
>  #include <dt-bindings/power/mt8173-power.h>
> +#include <dt-bindings/power/mt8183-power.h>
>
>  #define MTK_POLL_DELAY_US   10
>  #define MTK_POLL_TIMEOUT    (jiffies_to_usecs(HZ))
> @@ -1179,6 +1180,217 @@ static const struct scp_subdomain scp_subdomain_mt8173[] = {
>         {MT8173_POWER_DOMAIN_MFG_2D, MT8173_POWER_DOMAIN_MFG},
>  };
>
> +/*
> + * MT8183 power domain support
> + */
> +
> +static const struct scp_domain_data scp_domain_data_mt8183[] = {
> +       [MT8183_POWER_DOMAIN_AUDIO] = {
> +               .name = "audio",
> +               .sta_mask = PWR_STATUS_AUDIO,
> +               .ctl_offs = 0x0314,
> +               .sram_pdn_bits = GENMASK(11, 8),
> +               .sram_pdn_ack_bits = GENMASK(15, 12),
> +               .basic_clk_name = {"audio"},
> +       },
> +       [MT8183_POWER_DOMAIN_CONN] = {
> +               .name = "conn",
> +               .sta_mask = PWR_STATUS_CONN,
> +               .ctl_offs = 0x032c,
> +               .sram_pdn_bits = 0,
> +               .sram_pdn_ack_bits = 0,
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2a0, 0x2a4, 0, 0x228,
> +                               BIT(13) | BIT(14), BIT(13) | BIT(14)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_MFG_ASYNC] = {
> +               .name = "mfg_async",
> +               .sta_mask = PWR_STATUS_MFG_ASYNC,
> +               .ctl_offs = 0x0334,
> +               .sram_pdn_bits = 0,
> +               .sram_pdn_ack_bits = 0,
> +               .basic_clk_name = {"mfg"},
> +       },
> +       [MT8183_POWER_DOMAIN_MFG] = {
> +               .name = "mfg",
> +               .sta_mask = PWR_STATUS_MFG,
> +               .ctl_offs = 0x0338,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +       },
> +       [MT8183_POWER_DOMAIN_MFG_CORE0] = {
> +               .name = "mfg_core0",
> +               .sta_mask = BIT(7),
> +               .ctl_offs = 0x034c,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +       },
> +       [MT8183_POWER_DOMAIN_MFG_CORE1] = {
> +               .name = "mfg_core1",
> +               .sta_mask = BIT(20),
> +               .ctl_offs = 0x0310,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +       },
> +       [MT8183_POWER_DOMAIN_MFG_2D] = {
> +               .name = "mfg_2d",
> +               .sta_mask = PWR_STATUS_MFG_2D,
> +               .ctl_offs = 0x0348,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2a8, 0x2ac, 0, 0x258,
> +                               BIT(19) | BIT(20) | BIT(21),
> +                               BIT(19) | BIT(20) | BIT(21)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2a0, 0x2a4, 0, 0x228,
> +                               BIT(21) | BIT(22), BIT(21) | BIT(22)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_DISP] = {
> +               .name = "disp",
> +               .sta_mask = PWR_STATUS_DISP,
> +               .ctl_offs = 0x030c,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +               .basic_clk_name = {"mm"},
> +               .subsys_clk_prefix = "mm",
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2a8, 0x2ac, 0, 0x258,
> +                               BIT(16) | BIT(17), BIT(16) | BIT(17)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2a0, 0x2a4, 0, 0x228,
> +                               BIT(10) | BIT(11), BIT(10) | BIT(11)),
> +                       [2] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               GENMASK(7, 0), GENMASK(7, 0)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_CAM] = {
> +               .name = "cam",
> +               .sta_mask = BIT(25),
> +               .ctl_offs = 0x0344,
> +               .sram_pdn_bits = GENMASK(9, 8),
> +               .sram_pdn_ack_bits = GENMASK(13, 12),
> +               .basic_clk_name = {"cam"},
> +               .subsys_clk_prefix = "cam",
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               BIT(4) | BIT(5) | BIT(9) | BIT(13),
> +                               BIT(4) | BIT(5) | BIT(9) | BIT(13)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2a0, 0x2a4, 0, 0x228,
> +                               BIT(28), BIT(28)),
> +                       [2] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               BIT(11), 0),
> +                       [3] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               BIT(3) | BIT(4), BIT(3) | BIT(4)),

Why do you need to specify the indexes ([0], [1], ...)? Can you just
use automatic indexes? (especially considering that your code assumes
there is no gap in the bp_table entries.

> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_ISP] = {
> +               .name = "isp",
> +               .sta_mask = PWR_STATUS_ISP,
> +               .ctl_offs = 0x0308,
> +               .sram_pdn_bits = GENMASK(9, 8),
> +               .sram_pdn_ack_bits = GENMASK(13, 12),
> +               .basic_clk_name = {"isp"},
> +               .subsys_clk_prefix = "isp",
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               BIT(3) | BIT(8), BIT(3) | BIT(8)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               BIT(10), 0),
> +                       [2] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               BIT(2), BIT(2)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_VDEC] = {
> +               .name = "vdec",
> +               .sta_mask = BIT(31),
> +               .ctl_offs = 0x0300,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +               .bp_table = {
> +                       [0] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               BIT(7), BIT(7)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_VENC] = {
> +               .name = "venc",
> +               .sta_mask = PWR_STATUS_VENC,
> +               .ctl_offs = 0x0304,
> +               .sram_pdn_bits = GENMASK(11, 8),
> +               .sram_pdn_ack_bits = GENMASK(15, 12),
> +               .bp_table = {
> +                       [0] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               BIT(1), BIT(1)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_VPU_TOP] = {
> +               .name = "vpu_top",
> +               .sta_mask = BIT(26),
> +               .ctl_offs = 0x0324,
> +               .sram_pdn_bits = GENMASK(8, 8),
> +               .sram_pdn_ack_bits = GENMASK(12, 12),
> +               .basic_clk_name = {"vpu", "vpu1"},
> +               .subsys_clk_prefix = "vpu",
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               GENMASK(9, 6) | BIT(12),
> +                               GENMASK(9, 6) | BIT(12)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2a0, 0x2a4, 0, 0x228,
> +                               BIT(27), BIT(27)),
> +                       [2] = BUS_PROT(IFR_TYPE, 0x2d4, 0x2d8, 0, 0x2ec,
> +                               BIT(10) | BIT(11), BIT(10) | BIT(11)),
> +                       [3] = BUS_PROT(SMI_TYPE, 0x3c4, 0x3c8, 0, 0x3c0,
> +                               BIT(5) | BIT(6), BIT(5) | BIT(6)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_VPU_CORE0] = {
> +               .name = "vpu_core0",
> +               .sta_mask = BIT(27),
> +               .ctl_offs = 0x33c,
> +               .sram_iso_ctrl = true,
> +               .sram_pdn_bits = GENMASK(11, 8),
> +               .sram_pdn_ack_bits = GENMASK(13, 12),
> +               .basic_clk_name = {"vpu2"},
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2c4, 0x2c8, 0, 0x2e4,
> +                               BIT(6), BIT(6)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2c4, 0x2c8, 0, 0x2e4,
> +                               BIT(0) | BIT(2) | BIT(4),
> +                               BIT(0) | BIT(2) | BIT(4)),
> +               },
> +       },
> +       [MT8183_POWER_DOMAIN_VPU_CORE1] = {
> +               .name = "vpu_core1",
> +               .sta_mask = BIT(28),
> +               .ctl_offs = 0x0340,
> +               .sram_iso_ctrl = true,
> +               .sram_pdn_bits = GENMASK(11, 8),
> +               .sram_pdn_ack_bits = GENMASK(13, 12),
> +               .basic_clk_name = {"vpu3"},
> +               .bp_table = {
> +                       [0] = BUS_PROT(IFR_TYPE, 0x2c4, 0x2c8, 0, 0x2e4,
> +                               BIT(7), BIT(7)),
> +                       [1] = BUS_PROT(IFR_TYPE, 0x2c4, 0x2c8, 0, 0x2e4,
> +                               BIT(1) | BIT(3) | BIT(5),
> +                               BIT(1) | BIT(3) | BIT(5)),
> +               },
> +       },
> +};
> +
> +static const struct scp_subdomain scp_subdomain_mt8183[] = {
> +       {MT8183_POWER_DOMAIN_MFG_ASYNC, MT8183_POWER_DOMAIN_MFG},
> +       {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_2D},
> +       {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_CORE0},
> +       {MT8183_POWER_DOMAIN_MFG, MT8183_POWER_DOMAIN_MFG_CORE1},
> +       {MT8183_POWER_DOMAIN_DISP, MT8183_POWER_DOMAIN_CAM},
> +       {MT8183_POWER_DOMAIN_DISP, MT8183_POWER_DOMAIN_ISP},
> +       {MT8183_POWER_DOMAIN_DISP, MT8183_POWER_DOMAIN_VDEC},
> +       {MT8183_POWER_DOMAIN_DISP, MT8183_POWER_DOMAIN_VENC},
> +       {MT8183_POWER_DOMAIN_DISP, MT8183_POWER_DOMAIN_VPU_TOP},
> +       {MT8183_POWER_DOMAIN_VPU_TOP, MT8183_POWER_DOMAIN_VPU_CORE0},
> +       {MT8183_POWER_DOMAIN_VPU_TOP, MT8183_POWER_DOMAIN_VPU_CORE1},
> +};
> +
>  static const struct scp_soc_data mt2701_data = {
>         .domains = scp_domain_data_mt2701,
>         .num_domains = ARRAY_SIZE(scp_domain_data_mt2701),
> @@ -1245,6 +1457,17 @@ static const struct scp_soc_data mt8173_data = {
>         .bus_prot_reg_update = true,
>  };
>
> +static const struct scp_soc_data mt8183_data = {
> +       .domains = scp_domain_data_mt8183,
> +       .num_domains = ARRAY_SIZE(scp_domain_data_mt8183),
> +       .subdomains = scp_subdomain_mt8183,
> +       .num_subdomains = ARRAY_SIZE(scp_subdomain_mt8183),
> +       .regs = {
> +               .pwr_sta_offs = 0x0180,
> +               .pwr_sta2nd_offs = 0x0184
> +       }
> +};
> +
>  /*
>   * scpsys driver init
>   */
> @@ -1268,6 +1491,9 @@ static const struct of_device_id of_scpsys_match_tbl[] = {
>         }, {
>                 .compatible = "mediatek,mt8173-scpsys",
>                 .data = &mt8173_data,
> +       }, {
> +               .compatible = "mediatek,mt8183-scpsys",
> +               .data = &mt8183_data,
>         }, {
>                 /* sentinel */
>         }
> --
> 2.18.0
>