From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jindal, Sonika" <sonika.jindal@intel.com>
Subject: Re: [PATCH 3/7] drm/exynos: Renaming DP training vswing
 pre emph defines
Date: Thu, 28 Aug 2014 10:02:51 +0530
Message-ID: <53FEB0F3.8040404@intel.com>
References: <1407495226-12620-1-git-send-email-sonika.jindal@intel.com>
 <1407495226-12620-4-git-send-email-sonika.jindal@intel.com>
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To: Jingoo Han <jg1.han@samsung.com>
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On 8/28/2014 6:25 AM, Jingoo Han wrote:
> On Friday, August 08, 2014 7:54 PM, Sonika Jindal wrote:
>>
>> From: Sonika Jindal <sonika.jindal@intel.com>
>>
>> Rename the defines to have levels instead of values for vswing and
>> pre-emph levels as the values may differ in other scenarios like low vswing of
>> eDP1.4 where the values are different.
>>
>> Done using following cocci patch for each define:
>> @@
>> @@
>>
>>   # define DP_TRAIN_VOLTAGE_SWING_400     (0 << 0)
>> + # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0     (0 << 0)
>>
>> ...
>>
>> Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
>> ---
>>   drivers/gpu/drm/exynos/exynos_dp_core.c |    4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> index 4f3c7eb..02602a8 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> @@ -329,8 +329,8 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>>   		return retval;
>>
>>   	for (lane = 0; lane < lane_count; lane++)
>> -		buf[lane] = DP_TRAIN_PRE_EMPHASIS_0 |
>> -			    DP_TRAIN_VOLTAGE_SWING_400;
>> +		buf[lane] = DP_TRAIN_PRE_EMPH_LEVEL_0 |
>> +			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
>
> NAK!
>
> It makes build error. Please build your patch, before sending the patch.
> It is a rule when submitting patches.
>
> Please, fix it as follows.
>
> +		buf[lane] = DP_TRAIN_PRE_EMPHASIS_LEVEL_0|
> +			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
>
I think the first patch which you have taken (which adds new defines) is 
the one from the previous series for the same change. In the second 
version, I have named them as DP_TRAIN_PRE_EMPH_LEVEL_* which was done 
using cocci. Following is from that patch:
  # define DP_TRAIN_PRE_EMPHASIS_0	    (0 << 3)
+# define DP_TRAIN_PRE_EMPH_LEVEL_0		(0 << 3)
  # define DP_TRAIN_PRE_EMPHASIS_3_5	    (1 << 3)
+# define DP_TRAIN_PRE_EMPH_LEVEL_1		(1 << 3)
  # define DP_TRAIN_PRE_EMPHASIS_6	    (2 << 3)
+# define DP_TRAIN_PRE_EMPH_LEVEL_2		(2 << 3)
  # define DP_TRAIN_PRE_EMPHASIS_9_5	    (3 << 3)
+# define DP_TRAIN_PRE_EMPH_LEVEL_3		(3 << 3)
> Best regards,
> Jingoo Han
>
>>
>>   	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
>>   			lane_count, buf);
>> --
>> 1.7.10.4
>