Re: [PATCH 08/14] drm/i915: Check for IVB instead of gen7 when we think about IVB CPU eDP

[Jani Nikula <jani.nikula@linux.intel.com>]

On Fri, 02 Mar 2018, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> Almost all of the GEN7 checks in the DP code are actually looking for
> IVB. HSW doesn't even take these codepaths, and VLV is excluded on
> account of not having port A. So let's change the checks to IS_IVB to
> make the code less confusing.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_dp.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 642ae298df07..2a82eccffe54 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -1970,7 +1970,7 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
>  
>  	/* Split out the IBX/CPU vs CPT settings */
>  
> -	if (IS_GEN7(dev_priv) && port == PORT_A) {
> +	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
>  		if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
>  			intel_dp->DP |= DP_SYNC_HS_HIGH;
>  		if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
> @@ -2650,7 +2650,7 @@ static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
>  	if (!(tmp & DP_PORT_EN))
>  		goto out;
>  
> -	if (IS_GEN7(dev_priv) && port == PORT_A) {
> +	if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
>  		*pipe = PORT_TO_PIPE_CPT(tmp);
>  	} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
>  		enum pipe p;
> @@ -2887,7 +2887,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
>  		}
>  		I915_WRITE(DP_TP_CTL(port), temp);
>  
> -	} else if ((IS_GEN7(dev_priv) && port == PORT_A) ||
> +	} else if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
>  		   (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
>  		*DP &= ~DP_LINK_TRAIN_MASK_CPT;
>  
> @@ -3213,7 +3213,7 @@ intel_dp_voltage_max(struct intel_dp *intel_dp)
>  		return intel_ddi_dp_voltage_max(encoder);
>  	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
>  		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
> -	else if (IS_GEN7(dev_priv) && port == PORT_A)
> +	else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
>  		return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
>  	else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
>  		return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
> @@ -3242,7 +3242,7 @@ intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing)
>  		default:
>  			return DP_TRAIN_PRE_EMPH_LEVEL_0;
>  		}
> -	} else if (IS_GEN7(dev_priv) && port == PORT_A) {
> +	} else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
>  		switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
>  		case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
>  			return DP_TRAIN_PRE_EMPH_LEVEL_2;
> @@ -3551,7 +3551,7 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
>  		signal_levels = chv_signal_levels(intel_dp);
>  	} else if (IS_VALLEYVIEW(dev_priv)) {
>  		signal_levels = vlv_signal_levels(intel_dp);
> -	} else if (IS_GEN7(dev_priv) && port == PORT_A) {
> +	} else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
>  		signal_levels = gen7_edp_signal_levels(train_set);

I guess a follow-up could rename the gen7_ function to ivb_ too.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

>  		mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
>  	} else if (IS_GEN6(dev_priv) && port == PORT_A) {
> @@ -3641,7 +3641,7 @@ intel_dp_link_down(struct intel_encoder *encoder,
>  
>  	DRM_DEBUG_KMS("\n");
>  
> -	if ((IS_GEN7(dev_priv) && port == PORT_A) ||
> +	if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
>  	    (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
>  		DP &= ~DP_LINK_TRAIN_MASK_CPT;
>  		DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;

-- 
Jani Nikula, Intel Open Source Technology Center
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