[Intel-gfx] [PATCH 07/10] drm/i915: Disable FDI after the CRT port on LPT-H

[Paulo Zanoni]

2015-12-01 11:08 GMT-02:00  <ville.syrjala at linux.intel.com>:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Bspec modeset sequence tells us to disable the PCH transcoder and
> FDI after the CRT port on LPT-H, so let's do that.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 55419e4d032c..1dc125b6dcdc 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -5159,18 +5159,17 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
>         if (!intel_crtc->config->has_dsi_encoder)
>                 intel_ddi_disable_pipe_clock(intel_crtc);
>
> -       if (intel_crtc->config->has_pch_encoder) {
> -               lpt_disable_pch_transcoder(dev_priv);
> -               intel_ddi_fdi_disable(crtc);
> -       }
> -
>         for_each_encoder_on_crtc(dev, crtc, encoder)
>                 if (encoder->post_disable)
>                         encoder->post_disable(encoder);

On HAS_DDI platforms, encoder->post_disable() is unset.

Also, this commit is a revert of commit
97b040aa391651793e4d463408c137b81517cc90.

>
> -       if (intel_crtc->config->has_pch_encoder)
> +       if (intel_crtc->config->has_pch_encoder) {
> +               lpt_disable_pch_transcoder(dev_priv);
> +               intel_ddi_fdi_disable(crtc);
> +
>                 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
>                                                       true);
> +       }
>  }
>
>  static void i9xx_pfit_enable(struct intel_crtc *crtc)
> --
> 2.4.10
>
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-- 
Paulo Zanoni