[PATCH v4 04/11] drm/rockchip: analogix_dp: add rk3399 eDP support

[Sean Paul]

On Wed, Jun 29, 2016 at 5:15 AM, Yakir Yang <ykk at rock-chips.com> wrote:
> RK3399 and RK3288 shared the same eDP IP controller, only some light
> difference with VOP configure and GRF configure.
>
> Signed-off-by: Yakir Yang <ykk at rock-chips.com>
> Acked-by: Mark Yao <mark.yao at rock-chips.com>
> Reviewed-by: Tomasz Figa <tomasz.figa at chromium.com>


Reviewed-by: Sean Paul <seanpaul at chromium.org>

> ---
> Changes in v4:
> - Improved the overly complicated .atomic_check function. (Sean)
> - Add reviewed flag from Tomasz
>
> Changes in v3:
> - Give the "rk3399-edp" a separate line for clarity in document (Tomasz, reviewed at Google Gerrit)
>     [https://chromium-review.googlesource.com/#/c/346314/10/Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt@5]
> - Move 'output_type' setting before the return statement (Tomasz, reviewed at Google Gerrit)
>     [https://chromium-review.googlesource.com/#/c/346314/10/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@154]
> - Add the acked flag from Mark.
>
>  .../bindings/display/bridge/analogix_dp.txt        |  1 +
>  .../display/rockchip/analogix_dp-rockchip.txt      |  3 ++-
>  drivers/gpu/drm/rockchip/analogix_dp-rockchip.c    | 23 ++++++++++++++++++++++
>  include/drm/bridge/analogix_dp.h                   |  3 ++-
>  4 files changed, 28 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
> index 4f2ba8c..4a0f4f7 100644
> --- a/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
> @@ -5,6 +5,7 @@ Required properties for dp-controller:
>                 platform specific such as:
>                  * "samsung,exynos5-dp"
>                  * "rockchip,rk3288-dp"
> +                * "rockchip,rk3399-edp"
>         -reg:
>                 physical base address of the controller and length
>                 of memory mapped region.
> diff --git a/Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt
> index e832ff9..726c945 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt
> +++ b/Documentation/devicetree/bindings/display/rockchip/analogix_dp-rockchip.txt
> @@ -2,7 +2,8 @@ Rockchip RK3288 specific extensions to the Analogix Display Port
>  ================================
>
>  Required properties:
> -- compatible: "rockchip,rk3288-edp";
> +- compatible: "rockchip,rk3288-edp",
> +             "rockchip,rk3399-edp";
>
>  - reg: physical base address of the controller and length
>
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index 0a30931..8557a08 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -36,6 +36,8 @@
>
>  #define RK3288_GRF_SOC_CON6            0x25c
>  #define RK3288_EDP_LCDC_SEL            BIT(5)
> +#define RK3399_GRF_SOC_CON20           0x6250
> +#define RK3399_EDP_LCDC_SEL            BIT(5)
>
>  #define HIWORD_UPDATE(val, mask)       (val | (mask) << 16)
>
> @@ -159,6 +161,8 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
>                                       struct drm_connector_state *conn_state)
>  {
>         struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
> +       struct rockchip_dp_device *dp = to_dp(encoder);
> +       int ret;
>
>         /*
>          * FIXME(Yakir): driver should configure the CRTC output video
> @@ -173,8 +177,19 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
>          * But if I configure CTRC to RGBaaa, and eDP driver still keep
>          * RGB666 input video mode, then screen would works prefect.
>          */
> +
>         s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
>         s->output_type = DRM_MODE_CONNECTOR_eDP;
> +       if (dp->data->chip_type == RK3399_EDP) {
> +               /*
> +                * For RK3399, VOP Lit must code the out mode to RGB888,
> +                * VOP Big must code the out mode to RGB10.
> +                */
> +               ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node,
> +                                                       encoder);
> +               if (ret > 0)
> +                       s->output_mode = ROCKCHIP_OUT_MODE_P888;
> +       }
>
>         return 0;
>  }
> @@ -378,6 +393,13 @@ static const struct dev_pm_ops rockchip_dp_pm_ops = {
>  #endif
>  };
>
> +static const struct rockchip_dp_chip_data rk3399_edp = {
> +       .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
> +       .lcdsel_big = HIWORD_UPDATE(0, RK3399_EDP_LCDC_SEL),
> +       .lcdsel_lit = HIWORD_UPDATE(RK3399_EDP_LCDC_SEL, RK3399_EDP_LCDC_SEL),
> +       .chip_type = RK3399_EDP,
> +};
> +
>  static const struct rockchip_dp_chip_data rk3288_dp = {
>         .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
>         .lcdsel_big = HIWORD_UPDATE(0, RK3288_EDP_LCDC_SEL),
> @@ -387,6 +409,7 @@ static const struct rockchip_dp_chip_data rk3288_dp = {
>
>  static const struct of_device_id rockchip_dp_dt_ids[] = {
>         {.compatible = "rockchip,rk3288-dp", .data = &rk3288_dp },
> +       {.compatible = "rockchip,rk3399-edp", .data = &rk3399_edp },
>         {}
>  };
>  MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids);
> diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
> index 790ab5d..fc4aea3 100644
> --- a/include/drm/bridge/analogix_dp.h
> +++ b/include/drm/bridge/analogix_dp.h
> @@ -16,11 +16,12 @@
>  enum analogix_dp_devtype {
>         EXYNOS_DP,
>         RK3288_DP,
> +       RK3399_EDP,
>  };
>
>  static inline bool is_rockchip(enum analogix_dp_devtype type)
>  {
> -       return type == RK3288_DP;
> +       return type == RK3288_DP || type == RK3399_EDP;
>  }
>
>  struct analogix_dp_plat_data {
> --
> 1.9.1
>
>