Daniel Vetter <[email protected]> writes:

> Since
>
> commit 24a1f16de97c4cf0029d9acd04be06db32208726
> Author: Mika Kuoppala <[email protected]>
> Date:   Fri Feb 8 16:35:37 2013 +0200
>
>     drm/i915: disable shared panel fitter for pipe
>
> We clear the single panel fitter when disabling the pipe it's attached to, so 
> no
> need to additionally clear it when there's no lvds port detected. Since that
> alone isn't good enough e.g. when an external monitor is connected and the 
> bios
> uses the panel fitter on that output.
>
> v2: Remove the now unused has_lvds variable and drop the bool return
> value from intel_lvds_init, both suggest by Mika Kuoppala.
>
> Cc: Mika Kuoppala <[email protected]>
> Signed-off-by: Daniel Vetter <[email protected]>

Reviewed-by: Mika Kuoppala <[email protected]>

> ---
>  drivers/gpu/drm/i915/intel_display.c |    7 +------
>  drivers/gpu/drm/i915/intel_drv.h     |    2 +-
>  drivers/gpu/drm/i915/intel_lvds.c    |   20 ++++++++++----------
>  3 files changed, 12 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index f73fc3d..00f3d0b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -8335,13 +8335,8 @@ static void intel_setup_outputs(struct drm_device *dev)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_encoder *encoder;
>       bool dpd_is_edp = false;
> -     bool has_lvds;
>  
> -     has_lvds = intel_lvds_init(dev);
> -     if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
> -             /* disable the panel fitter on everything but LVDS */
> -             I915_WRITE(PFIT_CONTROL, 0);
> -     }
> +     intel_lvds_init(dev);
>  
>       if (!(HAS_DDI(dev) && (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)))
>               intel_crt_init(dev);
> diff --git a/drivers/gpu/drm/i915/intel_drv.h 
> b/drivers/gpu/drm/i915/intel_drv.h
> index e6f84d0..9e29223 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -459,7 +459,7 @@ extern void intel_tv_init(struct drm_device *dev);
>  extern void intel_mark_busy(struct drm_device *dev);
>  extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj);
>  extern void intel_mark_idle(struct drm_device *dev);
> -extern bool intel_lvds_init(struct drm_device *dev);
> +extern void intel_lvds_init(struct drm_device *dev);
>  extern bool intel_is_dual_link_lvds(struct drm_device *dev);
>  extern void intel_dp_init(struct drm_device *dev, int output_reg,
>                         enum port port);
> diff --git a/drivers/gpu/drm/i915/intel_lvds.c 
> b/drivers/gpu/drm/i915/intel_lvds.c
> index 6ff145f..5eb74de 100644
> --- a/drivers/gpu/drm/i915/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/intel_lvds.c
> @@ -1037,7 +1037,7 @@ static bool intel_lvds_supported(struct drm_device *dev)
>   * Create the connector, register the LVDS DDC bus, and try to figure out 
> what
>   * modes we can display on the LVDS panel (if present).
>   */
> -bool intel_lvds_init(struct drm_device *dev)
> +void intel_lvds_init(struct drm_device *dev)
>  {
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_lvds_encoder *lvds_encoder;
> @@ -1055,35 +1055,35 @@ bool intel_lvds_init(struct drm_device *dev)
>       u8 pin;
>  
>       if (!intel_lvds_supported(dev))
> -             return false;
> +             return;
>  
>       /* Skip init on machines we know falsely report LVDS */
>       if (dmi_check_system(intel_no_lvds))
> -             return false;
> +             return;
>  
>       pin = GMBUS_PORT_PANEL;
>       if (!lvds_is_present_in_vbt(dev, &pin)) {
>               DRM_DEBUG_KMS("LVDS is not present in VBT\n");
> -             return false;
> +             return;
>       }
>  
>       if (HAS_PCH_SPLIT(dev)) {
>               if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0)
> -                     return false;
> +                     return;
>               if (dev_priv->edp.support) {
>                       DRM_DEBUG_KMS("disable LVDS for eDP support\n");
> -                     return false;
> +                     return;
>               }
>       }
>  
>       lvds_encoder = kzalloc(sizeof(struct intel_lvds_encoder), GFP_KERNEL);
>       if (!lvds_encoder)
> -             return false;
> +             return;
>  
>       lvds_connector = kzalloc(sizeof(struct intel_lvds_connector), 
> GFP_KERNEL);
>       if (!lvds_connector) {
>               kfree(lvds_encoder);
> -             return false;
> +             return;
>       }
>  
>       lvds_encoder->attached_connector = lvds_connector;
> @@ -1257,7 +1257,7 @@ out:
>       intel_panel_init(&intel_connector->panel, fixed_mode);
>       intel_panel_setup_backlight(connector);
>  
> -     return true;
> +     return;
>  
>  failed:
>       DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
> @@ -1267,5 +1267,5 @@ failed:
>               drm_mode_destroy(dev, fixed_mode);
>       kfree(lvds_encoder);
>       kfree(lvds_connector);
> -     return false;
> +     return;
>  }
> -- 
> 1.7.10.4
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