Hi!

Dne sobota, 28. december 2019 ob 21:28:16 CET je 
[email protected] napisal(a):
> From: Roman Stratiienko <[email protected]>
> 
> According to DRM documentation the only difference between PRIMARY
> and OVERLAY plane is that each CRTC must have PRIMARY plane and
> OVERLAY are optional.
> 
> Allow PRIMARY plane to have dimension different from full-screen.

I noticed this issue recently and I'm glad that you posted solution. Code is 
fine, just few nitpicks and I think it would be better to split it in two 
commits, one which adds callback and another which implements that callback in 
sun8i-mixer. DE1 also needs this fix, but it can be posted later.

> 
> Signed-off-by: Roman Stratiienko <[email protected]>
> ---
>  drivers/gpu/drm/sun4i/sun4i_crtc.c     |  4 +++
>  drivers/gpu/drm/sun4i/sun8i_mixer.c    | 35 ++++++++++++++++++++++++++
>  drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 30 ----------------------
>  drivers/gpu/drm/sun4i/sunxi_engine.h   |  8 ++++++
>  4 files changed, 47 insertions(+), 30 deletions(-)
> 
> diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c
> b/drivers/gpu/drm/sun4i/sun4i_crtc.c index 3a153648b369..156ea8f19d7d
> 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
> @@ -139,8 +139,12 @@ static void sun4i_crtc_mode_set_nofb(struct drm_crtc
> *crtc) struct drm_display_mode *mode = &crtc->state->adjusted_mode;
>       struct drm_encoder *encoder = sun4i_crtc_get_encoder(crtc);
>       struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
> +     struct sunxi_engine *engine = scrtc->engine;
> 
>       sun4i_tcon_mode_set(scrtc->tcon, encoder, mode);
> +
> +     if (engine->ops->mode_set)
> +             engine->ops->mode_set(engine, mode);
>  }
> 
>  static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
> diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> b/drivers/gpu/drm/sun4i/sun8i_mixer.c index eea4813602b7..bb9a665fd053
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
> @@ -257,6 +257,40 @@ const struct de2_fmt_info *sun8i_mixer_format_info(u32
> format) return NULL;
>  }
> 
> +static void sun8i_mode_set(struct sunxi_engine *engine,
> +                        struct drm_display_mode *mode)
> +{
> +     u32 dst_w = mode->crtc_hdisplay;
> +     u32 dst_h = mode->crtc_vdisplay;
> +     u32 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
> +     bool interlaced = false;
> +     u32 val;
> +     struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
> +     u32 bld_base = sun8i_blender_base(mixer);
> +
> +     DRM_DEBUG_DRIVER("Mode change, updating global size W: %u H: %u\n",
> +                      dst_w, dst_h);

We should start using newly introduced helpers for DRM debug output, in this 
case drm_dbg(), which replace those in in all caps.

> +     regmap_write(mixer->engine.regs,
> +                  SUN8I_MIXER_GLOBAL_SIZE,
> +                  outsize);
> +     regmap_write(mixer->engine.regs,
> +                  SUN8I_MIXER_BLEND_OUTSIZE(bld_base), outsize);
> +
> +     interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
> +
> +     if (interlaced)
> +             val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
> +     else
> +             val = 0;
> +
> +     regmap_update_bits(mixer->engine.regs,
> +                        SUN8I_MIXER_BLEND_OUTCTL(bld_base),
> +                        SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
> +                        val);
> +     DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n",
> +                      interlaced ? "on" : "off");

Ditto.

> +}
> +
>  static void sun8i_atomic_begin(struct sunxi_engine *engine,
>                              struct drm_crtc_state *old_state)
>  {
> @@ -325,6 +359,7 @@ static const struct sunxi_engine_ops sun8i_engine_ops =
> { .commit             = sun8i_mixer_commit,
>       .layers_init    = sun8i_layers_init,
>       .atomic_begin   = sun8i_atomic_begin,
> +     .mode_set       = sun8i_mode_set,
>  };
> 
>  static struct regmap_config sun8i_mixer_regmap_config = {
> diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c index c87fd842918e..893076716070
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> @@ -99,36 +99,6 @@ static int sun8i_ui_layer_update_coord(struct sun8i_mixer
> *mixer, int channel, insize = SUN8I_MIXER_SIZE(src_w, src_h);
>       outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
> 
> -     if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
> -             bool interlaced = false;
> -             u32 val;
> -
> -             DRM_DEBUG_DRIVER("Primary layer, updating global size 
W: %u H: %u\n",
> -                              dst_w, dst_h);
> -             regmap_write(mixer->engine.regs,
> -                          SUN8I_MIXER_GLOBAL_SIZE,
> -                          outsize);
> -             regmap_write(mixer->engine.regs,
> -                          SUN8I_MIXER_BLEND_OUTSIZE(bld_base), 
outsize);
> -
> -             if (state->crtc)
> -                     interlaced = state->crtc->state-
>adjusted_mode.flags
> -                             & DRM_MODE_FLAG_INTERLACE;
> -
> -             if (interlaced)
> -                     val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
> -             else
> -                     val = 0;
> -
> -             regmap_update_bits(mixer->engine.regs,
> -                                
SUN8I_MIXER_BLEND_OUTCTL(bld_base),
> -                                
SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
> -                                val);
> -
> -             DRM_DEBUG_DRIVER("Switching display mixer interlaced 
mode %s\n",
> -                              interlaced ? "on" : "off");
> -     }
> -
>       /* Set height and width */
>       DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
>                        state->src.x1 >> 16, state->src.y1 >> 16);
> diff --git a/drivers/gpu/drm/sun4i/sunxi_engine.h
> b/drivers/gpu/drm/sun4i/sunxi_engine.h index 548710a936d5..9783c112d512
> 100644
> --- a/drivers/gpu/drm/sun4i/sunxi_engine.h
> +++ b/drivers/gpu/drm/sun4i/sunxi_engine.h
> @@ -108,6 +108,14 @@ struct sunxi_engine_ops {
>        * This function is optional.
>        */
>       void (*vblank_quirk)(struct sunxi_engine *engine);
> +
> +     /**
> +      * @mode_set:
> +      *

Please add description.

Best regards,
Jernej

> +      * This function is optional.
> +      */
> +     void (*mode_set)(struct sunxi_engine *engine,
> +                      struct drm_display_mode *mode);
>  };
> 
>  /**




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