[Intel-xe] [PATCH 13/42] drm/i915: Re-order if/else ladder in intel_detect_pch()

[Matt Roper]

On Wed, Aug 23, 2023 at 10:07:11AM -0700, Lucas De Marchi wrote:
> Follow the convention of checking the last platform first and reword the
> comment to convey there are more platforms than just DG1.
> 
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/i915/soc/intel_pch.c | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/soc/intel_pch.c b/drivers/gpu/drm/i915/soc/intel_pch.c
> index ba9843cb1b13..cf795ecdcc26 100644
> --- a/drivers/gpu/drm/i915/soc/intel_pch.c
> +++ b/drivers/gpu/drm/i915/soc/intel_pch.c
> @@ -216,13 +216,16 @@ void intel_detect_pch(struct drm_i915_private *dev_priv)
>  	unsigned short id;
>  	enum intel_pch pch_type;
>  
> -	/* DG1 has south engine display on the same PCI device */
> -	if (IS_DG1(dev_priv)) {
> -		dev_priv->pch_type = PCH_DG1;
> -		return;
> -	} else if (IS_DG2(dev_priv)) {
> +	/*
> +	 * South display engine on the same PCI device: just assign the fake
> +	 * PCH.
> +	 */
> +	if (IS_DG2(dev_priv)) {
>  		dev_priv->pch_type = PCH_DG2;
>  		return;
> +	} else if (IS_DG1(dev_priv)) {
> +		dev_priv->pch_type = PCH_DG1;
> +		return;
>  	}
>  
>  	/*
> -- 
> 2.40.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation