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From: Jani Nikula <jani.nikula@intel.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915/dp: debug log max vswing and pre-emphasis
Date: Tue, 21 Jan 2020 17:49:39 +0200	[thread overview]
Message-ID: <87wo9kern0.fsf@intel.com> (raw)
In-Reply-To: <20200121143252.GB13686@intel.com>

On Tue, 21 Jan 2020, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> On Fri, Jan 17, 2020 at 05:02:35PM +0200, Jani Nikula wrote:
>> Provide slightly more debugging help.
>> 
>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Pushed to dinq, thanks for the review.

BR,
Jani.

>
>> ---
>>  drivers/gpu/drm/i915/display/intel_dp.c | 13 ++++++++-----
>>  1 file changed, 8 insertions(+), 5 deletions(-)
>> 
>> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
>> index 4074d83b1a5f..c26be4421f01 100644
>> --- a/drivers/gpu/drm/i915/display/intel_dp.c
>> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
>> @@ -4142,11 +4142,14 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
>>  	if (mask)
>>  		DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels);
>>  
>> -	DRM_DEBUG_KMS("Using vswing level %d\n",
>> -		train_set & DP_TRAIN_VOLTAGE_SWING_MASK);
>> -	DRM_DEBUG_KMS("Using pre-emphasis level %d\n",
>> -		(train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >>
>> -			DP_TRAIN_PRE_EMPHASIS_SHIFT);
>> +	DRM_DEBUG_KMS("Using vswing level %d%s\n",
>> +		      train_set & DP_TRAIN_VOLTAGE_SWING_MASK,
>> +		      train_set & DP_TRAIN_MAX_SWING_REACHED ? " (max)" : "");
>> +	DRM_DEBUG_KMS("Using pre-emphasis level %d%s\n",
>> +		      (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >>
>> +		      DP_TRAIN_PRE_EMPHASIS_SHIFT,
>> +		      train_set & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ?
>> +		      " (max)" : "");
>>  
>>  	intel_dp->DP = (intel_dp->DP & ~mask) | signal_levels;
>>  
>> -- 
>> 2.20.1
>> 
>> _______________________________________________
>> Intel-gfx mailing list
>> Intel-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

      reply	other threads:[~2020-01-21 15:50 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-17 15:02 [Intel-gfx] [PATCH] drm/i915/dp: debug log max vswing and pre-emphasis Jani Nikula
2020-01-18  0:11 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork
2020-01-18  0:11 ` [Intel-gfx] ✗ Fi.CI.BUILD: warning " Patchwork
2020-01-20 18:42 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2020-01-21 14:32 ` [Intel-gfx] [PATCH] " Ville Syrjälä
2020-01-21 15:49   ` Jani Nikula [this message]

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