On Wed, Jul 12, 2017 at 05:08:50PM +0300, Jani Nikula wrote:
> Signed-off-by: Jani Nikula <[email protected]>
> ---
>  drivers/gpu/drm/i915/intel_crt.c     | 44 
> ++++++++++++++++++++++++++++++++++++
>  drivers/gpu/drm/i915/intel_display.c | 16 +------------
>  2 files changed, 45 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_crt.c 
> b/drivers/gpu/drm/i915/intel_crt.c
> index 84a1f5e85153..82bd149889ee 100644
> --- a/drivers/gpu/drm/i915/intel_crt.c
> +++ b/drivers/gpu/drm/i915/intel_crt.c
> @@ -227,11 +227,53 @@ static void hsw_post_disable_crt(struct intel_encoder 
> *encoder,
>       intel_ddi_fdi_post_disable(encoder, old_crtc_state, old_conn_state);
>  }
>  
> +static void hsw_pre_pll_enable_crt(struct intel_encoder *encoder,
> +                                struct intel_crtc_state *pipe_config,
> +                                struct drm_connector_state *conn_state)
> +{
> +     struct drm_crtc *crtc = pipe_config->base.crtc;
> +     struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> +     struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> +
> +     WARN_ON(!intel_crtc->config->has_pch_encoder);
> +
> +     intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, false);
> +}
> +
> +static void hsw_pre_enable_crt(struct intel_encoder *encoder,
> +                            struct intel_crtc_state *pipe_config,
> +                            struct drm_connector_state *conn_state)
> +{
> +     struct drm_crtc *crtc = pipe_config->base.crtc;
> +     struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> +     struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> +     int pipe = intel_crtc->pipe;
> +
> +     WARN_ON(!intel_crtc->config->has_pch_encoder);
> +
> +     intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
> +}
> +
>  static void intel_enable_crt(struct intel_encoder *encoder,
>                            struct intel_crtc_state *pipe_config,
>                            struct drm_connector_state *conn_state)
>  {
> +     struct drm_crtc *crtc = pipe_config->base.crtc;
> +     struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> +     struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> +     int pipe = intel_crtc->pipe;
> +
>       intel_crt_set_dpms(encoder, pipe_config, DRM_MODE_DPMS_ON);
> +
> +     if (HAS_DDI(dev_priv)) {
> +             WARN_ON(!intel_crtc->config->has_pch_encoder);
> +
> +             intel_wait_for_vblank(dev_priv, pipe);
> +             intel_wait_for_vblank(dev_priv, pipe);
> +             intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
> +             intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> +                                                   true);
> +     }
>  }

Bikeshed, but since we have so many hsw_ special cases already, I'd do one
for enable too. Mixing up vfuncs and if conditions are confusing. With
that (and a bit more commit message perhaps):

Reviewed-by: Daniel Vetter <[email protected]>

>  
>  static enum drm_mode_status
> @@ -907,6 +949,8 @@ void intel_crt_init(struct drm_i915_private *dev_priv)
>               crt->base.port = PORT_E;
>               crt->base.get_config = hsw_crt_get_config;
>               crt->base.get_hw_state = intel_ddi_get_hw_state;
> +             crt->base.pre_pll_enable = hsw_pre_pll_enable_crt;
> +             crt->base.pre_enable = hsw_pre_enable_crt;
>               crt->base.post_disable = hsw_post_disable_crt;
>       } else {
>               crt->base.port = PORT_NONE;
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index 2144adc5b1d5..02448a86edeb 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -5346,10 +5346,6 @@ static void haswell_crtc_enable(struct 
> intel_crtc_state *pipe_config,
>       if (WARN_ON(intel_crtc->active))
>               return;
>  
> -     if (intel_crtc->config->has_pch_encoder)
> -             intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> -                                                   false);
> -
>       intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
>  
>       if (intel_crtc->config->shared_dpll)
> @@ -5383,9 +5379,7 @@ static void haswell_crtc_enable(struct intel_crtc_state 
> *pipe_config,
>  
>       intel_crtc->active = true;
>  
> -     if (intel_crtc->config->has_pch_encoder)
> -             intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
> -     else
> +     if (!intel_crtc->config->has_pch_encoder)
>               intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
>  
>       intel_encoders_pre_enable(crtc, pipe_config, old_state);
> @@ -5429,14 +5423,6 @@ static void haswell_crtc_enable(struct 
> intel_crtc_state *pipe_config,
>  
>       intel_encoders_enable(crtc, pipe_config, old_state);
>  
> -     if (intel_crtc->config->has_pch_encoder) {
> -             intel_wait_for_vblank(dev_priv, pipe);
> -             intel_wait_for_vblank(dev_priv, pipe);
> -             intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
> -             intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
> -                                                   true);
> -     }
> -
>       /* If we change the relative order between pipe/planes enabling, we need
>        * to change the workaround. */
>       hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
> -- 
> 2.11.0
> 
> _______________________________________________
> Intel-gfx mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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