Re: [PATCH v11 03/12] drm/i915/dp: Some reshuffling in mode_valid as prep for bigjoiner modes

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On Wed, Oct 21, 2020 at 10:42:14PM -0700, Manasi Navare wrote:
> No functional changes. This patch just moves some mode checks
> around to prepare for adding bigjoiner related mode validation
> 
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 818daab252f3..2c29e7f5281b 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -721,6 +721,9 @@ intel_dp_mode_valid(struct drm_connector *connector,
>  	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
>  		return MODE_NO_DBLESCAN;
>  
> +	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
> +		return MODE_H_ILLEGAL;
> +
>  	if (intel_dp_is_edp(intel_dp) && fixed_mode) {
>  		if (mode->hdisplay > fixed_mode->hdisplay)
>  			return MODE_PANEL;
> @@ -731,6 +734,9 @@ intel_dp_mode_valid(struct drm_connector *connector,
>  		target_clock = fixed_mode->clock;
>  	}
>  
> +	if (mode->clock < 10000)
> +		return MODE_CLOCK_LOW;
> +

No idea what this check is actually trying to achieve, but
since it was already there no harm in moving it around.

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

>  	max_link_clock = intel_dp_max_link_rate(intel_dp);
>  	max_lanes = intel_dp_max_lane_count(intel_dp);
>  
> @@ -771,12 +777,6 @@ intel_dp_mode_valid(struct drm_connector *connector,
>  	    target_clock > max_dotclk)
>  		return MODE_CLOCK_HIGH;
>  
> -	if (mode->clock < 10000)
> -		return MODE_CLOCK_LOW;
> -
> -	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
> -		return MODE_H_ILLEGAL;
> -
>  	status = intel_dp_mode_valid_downstream(intel_connector,
>  						mode, target_clock);
>  	if (status != MODE_OK)
> -- 
> 2.19.1

-- 
Ville Syrjälä
Intel
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