On 19-12-2019 18:03, Ville Syrjälä wrote:
On Wed, Dec 18, 2019 at 08:43:44PM +0530, Animesh Manna 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.ma...@intel.com>
---
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,
+ const u8 *link_status)
I'd prefer to keep the arrayish notation so we have some idea how big
this is supposed to be. I guess that woukld mean including some
drm dp header in intel_dp.h?
Yes, will add.
Regards,
Animesh
+{
+ 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)
--
2.24.0
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
