Re: [PATCH 3/7] drm/exynos: Renaming DP training vswing pre emph defines

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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@xxxxxxxxx>

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@xxxxxxxxx>
---
  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

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