Re: [PATCH v2 3/9] drm/i915/dp: Move vswing/pre-emphasis adjustment calculation

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On 19-12-2019 16:21, Jani Nikula wrote:
On Wed, 18 Dec 2019, Animesh Manna <animesh.manna@xxxxxxxxx> wrote:
vswing/pre-emphasis adjustment calculation is needed in processing
of auto phy compliance request other than link training, so moved
the same function in intel_dp.c.

No functional change.

Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
---
  drivers/gpu/drm/i915/display/intel_dp.c       | 32 +++++++++++++++++++
  drivers/gpu/drm/i915/display/intel_dp.h       |  3 ++
  .../drm/i915/display/intel_dp_link_training.c | 32 -------------------
  3 files changed, 35 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 2f31d226c6eb..ca82835b6dcf 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4110,6 +4110,38 @@ ivb_cpu_edp_signal_levels(u8 train_set)
  	}
  }
+void
+intel_get_adjust_train(struct intel_dp *intel_dp,
Please follow the naming convention of prefixing non-static functions in
foo.c with foo_. I.e. intel_dp_ here.

Sure, will do.

Regards,
Animesh


BR,
Jani.

+		       const u8 *link_status)
+{
+	u8 v = 0;
+	u8 p = 0;
+	int lane;
+	u8 voltage_max;
+	u8 preemph_max;
+
+	for (lane = 0; lane < intel_dp->lane_count; lane++) {
+		u8 this_v = drm_dp_get_adjust_request_voltage(link_status, lane);
+		u8 this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);
+
+		if (this_v > v)
+			v = this_v;
+		if (this_p > p)
+			p = this_p;
+	}
+
+	voltage_max = intel_dp_voltage_max(intel_dp);
+	if (v >= voltage_max)
+		v = voltage_max | DP_TRAIN_MAX_SWING_REACHED;
+
+	preemph_max = intel_dp_pre_emphasis_max(intel_dp, v);
+	if (p >= preemph_max)
+		p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+	for (lane = 0; lane < 4; lane++)
+		intel_dp->train_set[lane] = v | p;
+}
+
  void
  intel_dp_set_signal_levels(struct intel_dp *intel_dp)
  {
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 3da166054788..0d0cb692f701 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -91,6 +91,9 @@ void
  intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
  				       u8 dp_train_pat);
  void
+intel_get_adjust_train(struct intel_dp *intel_dp,
+		       const u8 *link_status);
+void
  intel_dp_set_signal_levels(struct intel_dp *intel_dp);
  void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
  u8
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 2a1130dd1ad0..1e38584e7d56 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -34,38 +34,6 @@ intel_dp_dump_link_status(const u8 link_status[DP_LINK_STATUS_SIZE])
  		      link_status[3], link_status[4], link_status[5]);
  }
-static void
-intel_get_adjust_train(struct intel_dp *intel_dp,
-		       const u8 link_status[DP_LINK_STATUS_SIZE])
-{
-	u8 v = 0;
-	u8 p = 0;
-	int lane;
-	u8 voltage_max;
-	u8 preemph_max;
-
-	for (lane = 0; lane < intel_dp->lane_count; lane++) {
-		u8 this_v = drm_dp_get_adjust_request_voltage(link_status, lane);
-		u8 this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);
-
-		if (this_v > v)
-			v = this_v;
-		if (this_p > p)
-			p = this_p;
-	}
-
-	voltage_max = intel_dp_voltage_max(intel_dp);
-	if (v >= voltage_max)
-		v = voltage_max | DP_TRAIN_MAX_SWING_REACHED;
-
-	preemph_max = intel_dp_pre_emphasis_max(intel_dp, v);
-	if (p >= preemph_max)
-		p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
-
-	for (lane = 0; lane < 4; lane++)
-		intel_dp->train_set[lane] = v | p;
-}
-
  static bool
  intel_dp_set_link_train(struct intel_dp *intel_dp,
  			u8 dp_train_pat)
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux