Re: [PATCH] drm/i915: only apply crt_present check on VLV

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Jun 25, 2014 at 08:24:29AM -0700, Jesse Barnes wrote:
> Apparently we can't trust this field on other platforms and need to find
> some other way.
> 
> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Since it's a regression it might be a good idea to note the
offender:

commit 27da3bdfcf7f5233cdfe4563f53edf1ecab7cea0
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Fri Apr 4 16:12:07 2014 -0700

    drm/i915: use VBT to determine whether to enumerate the VGA port

> ---
>  drivers/gpu/drm/i915/intel_display.c | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 065984d..9f80de5 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -11807,6 +11807,22 @@ const char *intel_output_name(int output)
>  	return names[output];
>  }
>  
> +static bool intel_crt_present(struct drm_device *dev)
> +{
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +
> +	if (IS_ULT(dev))
> +		return false;
> +
> +	if (IS_CHERRYVIEW(dev))
> +		return false;
> +
> +	if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
> +		return false;
> +
> +	return true;
> +}
> +
>  static void intel_setup_outputs(struct drm_device *dev)
>  {
>  	struct drm_i915_private *dev_priv = dev->dev_private;
> @@ -11815,7 +11831,7 @@ static void intel_setup_outputs(struct drm_device *dev)
>  
>  	intel_lvds_init(dev);
>  
> -	if (!IS_ULT(dev) && !IS_CHERRYVIEW(dev) && dev_priv->vbt.int_crt_support)
> +	if (intel_crt_present(dev))
>  		intel_crt_init(dev);
>  
>  	if (HAS_DDI(dev)) {
> -- 
> 1.9.1
> 
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-- 
Ville Syrjälä
Intel OTC