* [PATCH 2/2] drm/i915/dp: use drm_dp_phy_name() for logging
2021-10-05 8:10 [PATCH 1/2] drm/dp: add drm_dp_phy_name() for getting DP PHY name Jani Nikula
@ 2021-10-05 8:10 ` Jani Nikula
0 siblings, 0 replies; 3+ messages in thread
From: Jani Nikula @ 2021-10-05 8:10 UTC (permalink / raw)
To: intel-gfx, dri-devel; +Cc: jani.nikula, Ville Syrjälä
Drop the local intel_dp_phy_name() function, and replace with
drm_dp_phy_name(). This lets us drop a number of local buffers.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
.../drm/i915/display/intel_dp_link_training.c | 24 ++++---------------
1 file changed, 4 insertions(+), 20 deletions(-)
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 c052ce14894d..219568304c08 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -46,17 +46,6 @@ static void intel_dp_reset_lttpr_count(struct intel_dp *intel_dp)
DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] = 0;
}
-static const char *intel_dp_phy_name(enum drm_dp_phy dp_phy,
- char *buf, size_t buf_size)
-{
- if (dp_phy == DP_PHY_DPRX)
- snprintf(buf, buf_size, "DPRX");
- else
- snprintf(buf, buf_size, "LTTPR %d", dp_phy - DP_PHY_LTTPR1 + 1);
-
- return buf;
-}
-
static u8 *intel_dp_lttpr_phy_caps(struct intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
@@ -67,20 +56,17 @@ static void intel_dp_read_lttpr_phy_caps(struct intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
- char phy_name[10];
-
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name));
if (drm_dp_read_lttpr_phy_caps(&intel_dp->aux, dp_phy, phy_caps) < 0) {
drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
"failed to read the PHY caps for %s\n",
- phy_name);
+ drm_dp_phy_name(dp_phy));
return;
}
drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
"%s PHY capabilities: %*ph\n",
- phy_name,
+ drm_dp_phy_name(dp_phy),
(int)sizeof(intel_dp->lttpr_phy_caps[0]),
phy_caps);
}
@@ -443,7 +429,6 @@ void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
{
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- char phy_name[10];
drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s] lanes: %d, "
"vswing levels: " TRAIN_SET_FMT ", "
@@ -452,7 +437,7 @@ void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
crtc_state->lane_count,
TRAIN_SET_VSWING_ARGS(intel_dp->train_set),
TRAIN_SET_PREEMPH_ARGS(intel_dp->train_set),
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)));
+ drm_dp_phy_name(dp_phy));
if (intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy))
encoder->set_signal_levels(encoder, crtc_state);
@@ -849,7 +834,6 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
struct intel_connector *intel_connector = intel_dp->attached_connector;
- char phy_name[10];
bool ret = false;
if (!intel_dp_link_training_clock_recovery(intel_dp, crtc_state, dp_phy))
@@ -867,7 +851,7 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp,
intel_connector->base.name,
ret ? "passed" : "failed",
crtc_state->port_clock, crtc_state->lane_count,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)));
+ drm_dp_phy_name(dp_phy));
return ret;
}
--
2.30.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 1/2] drm/dp: add drm_dp_phy_name() for getting DP PHY name
@ 2021-10-19 16:13 Jani Nikula
2021-10-19 16:13 ` [PATCH 2/2] drm/i915/dp: use drm_dp_phy_name() for logging Jani Nikula
0 siblings, 1 reply; 3+ messages in thread
From: Jani Nikula @ 2021-10-19 16:13 UTC (permalink / raw)
To: dri-devel, intel-gfx; +Cc: jani.nikula, ville.syrjala
Add a helper for getting the DP PHY name. In the interest of caller
simplicity and to avoid allocations and passing in of buffers, duplicate
the const strings to return. It's a minor penalty to pay for simplicity
in all the call sites.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/drm_dp_helper.c | 21 +++++++++++++++++++++
include/drm/drm_dp_helper.h | 2 ++
2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index ada0a1ff262d..2c36fad88781 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -314,6 +314,27 @@ void drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux,
}
EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay);
+const char *drm_dp_phy_name(enum drm_dp_phy dp_phy)
+{
+ static const char * const phy_names[] = {
+ [DP_PHY_DPRX] = "DPRX",
+ [DP_PHY_LTTPR1] = "LTTPR 1",
+ [DP_PHY_LTTPR2] = "LTTPR 2",
+ [DP_PHY_LTTPR3] = "LTTPR 3",
+ [DP_PHY_LTTPR4] = "LTTPR 4",
+ [DP_PHY_LTTPR5] = "LTTPR 5",
+ [DP_PHY_LTTPR6] = "LTTPR 6",
+ [DP_PHY_LTTPR7] = "LTTPR 7",
+ [DP_PHY_LTTPR8] = "LTTPR 8",
+ };
+
+ if (dp_phy < 0 || dp_phy >= ARRAY_SIZE(phy_names))
+ return "<INVALID DP PHY>";
+
+ return phy_names[dp_phy];
+}
+EXPORT_SYMBOL(drm_dp_phy_name);
+
void drm_dp_lttpr_link_train_clock_recovery_delay(void)
{
usleep_range(100, 200);
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index afdf7f4183f9..39a249d99a51 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -2132,6 +2132,8 @@ bool drm_dp_read_sink_count_cap(struct drm_connector *connector,
const struct drm_dp_desc *desc);
int drm_dp_read_sink_count(struct drm_dp_aux *aux);
+const char *drm_dp_phy_name(enum drm_dp_phy dp_phy);
+
int drm_dp_read_lttpr_common_caps(struct drm_dp_aux *aux,
u8 caps[DP_LTTPR_COMMON_CAP_SIZE]);
int drm_dp_read_lttpr_phy_caps(struct drm_dp_aux *aux,
--
2.30.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 2/2] drm/i915/dp: use drm_dp_phy_name() for logging
2021-10-19 16:13 [PATCH 1/2] drm/dp: add drm_dp_phy_name() for getting DP PHY name Jani Nikula
@ 2021-10-19 16:13 ` Jani Nikula
0 siblings, 0 replies; 3+ messages in thread
From: Jani Nikula @ 2021-10-19 16:13 UTC (permalink / raw)
To: dri-devel, intel-gfx; +Cc: jani.nikula, ville.syrjala
Drop the local intel_dp_phy_name() function, and replace with
drm_dp_phy_name(). This lets us drop a number of local buffers.
v2: Rebase
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> # v1
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
.../drm/i915/display/intel_dp_link_training.c | 83 ++++++++-----------
1 file changed, 36 insertions(+), 47 deletions(-)
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 a72f2dc93718..81f93733fcc5 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -37,17 +37,6 @@ static void intel_dp_reset_lttpr_count(struct intel_dp *intel_dp)
DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] = 0;
}
-static const char *intel_dp_phy_name(enum drm_dp_phy dp_phy,
- char *buf, size_t buf_size)
-{
- if (dp_phy == DP_PHY_DPRX)
- snprintf(buf, buf_size, "DPRX");
- else
- snprintf(buf, buf_size, "LTTPR %d", dp_phy - DP_PHY_LTTPR1 + 1);
-
- return buf;
-}
-
static u8 *intel_dp_lttpr_phy_caps(struct intel_dp *intel_dp,
enum drm_dp_phy dp_phy)
{
@@ -59,20 +48,19 @@ static void intel_dp_read_lttpr_phy_caps(struct intel_dp *intel_dp,
{
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
u8 *phy_caps = intel_dp_lttpr_phy_caps(intel_dp, dp_phy);
- char phy_name[10];
-
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name));
if (drm_dp_read_lttpr_phy_caps(&intel_dp->aux, dp_phy, phy_caps) < 0) {
drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
"[ENCODER:%d:%s][%s] failed to read the PHY caps\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return;
}
drm_dbg_kms(&dp_to_i915(intel_dp)->drm,
"[ENCODER:%d:%s][%s] PHY capabilities: %*ph\n",
- encoder->base.base.id, encoder->base.name, phy_name,
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy),
(int)sizeof(intel_dp->lttpr_phy_caps[0]),
phy_caps);
}
@@ -406,14 +394,13 @@ intel_dp_get_adjust_train(struct intel_dp *intel_dp,
{
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
- char phy_name[10];
int lane;
if (intel_dp_is_uhbr(crtc_state)) {
drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 128b/132b, lanes: %d, "
"TX FFE request: " TRAIN_REQ_FMT "\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
crtc_state->lane_count,
TRAIN_REQ_TX_FFE_ARGS(link_status));
} else {
@@ -421,7 +408,7 @@ intel_dp_get_adjust_train(struct intel_dp *intel_dp,
"vswing request: " TRAIN_REQ_FMT ", "
"pre-emphasis request: " TRAIN_REQ_FMT "\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
crtc_state->lane_count,
TRAIN_REQ_VSWING_ARGS(link_status),
TRAIN_REQ_PREEMPH_ARGS(link_status));
@@ -486,13 +473,12 @@ intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
u8 train_pat = intel_dp_training_pattern_symbol(dp_train_pat);
- char phy_name[10];
if (train_pat != DP_TRAINING_PATTERN_DISABLE)
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Using DP training pattern TPS%c\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
dp_training_pattern_name(train_pat));
intel_dp->set_link_train(intel_dp, crtc_state, dp_train_pat);
@@ -529,13 +515,12 @@ void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
{
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
- char phy_name[10];
if (intel_dp_is_uhbr(crtc_state)) {
drm_dbg_kms(&i915->drm, "[ENCODER:%d:%s][%s] 128b/132b, lanes: %d, "
"TX FFE presets: " TRAIN_SET_FMT "\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
crtc_state->lane_count,
TRAIN_SET_TX_FFE_ARGS(intel_dp->train_set));
} else {
@@ -543,7 +528,7 @@ void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
"vswing levels: " TRAIN_SET_FMT ", "
"pre-emphasis levels: " TRAIN_SET_FMT "\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
crtc_state->lane_count,
TRAIN_SET_VSWING_ARGS(intel_dp->train_set),
TRAIN_SET_PREEMPH_ARGS(intel_dp->train_set));
@@ -715,12 +700,11 @@ intel_dp_dump_link_status(struct intel_dp *intel_dp, enum drm_dp_phy dp_phy,
{
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
- char phy_name[10];
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] ln0_1:0x%x ln2_3:0x%x align:0x%x sink:0x%x adj_req0_1:0x%x adj_req2_3:0x%x\n",
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
link_status[0], link_status[1], link_status[2],
link_status[3], link_status[4], link_status[5]);
}
@@ -740,21 +724,19 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
int voltage_tries, cr_tries, max_cr_tries;
u8 link_status[DP_LINK_STATUS_SIZE];
bool max_vswing_reached = false;
- char phy_name[10];
int delay_us;
delay_us = drm_dp_read_clock_recovery_delay(&intel_dp->aux,
intel_dp->dpcd, dp_phy,
intel_dp_is_uhbr(crtc_state));
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name));
-
/* clock recovery */
if (!intel_dp_reset_link_train(intel_dp, crtc_state, dp_phy,
DP_TRAINING_PATTERN_1 |
DP_LINK_SCRAMBLING_DISABLE)) {
drm_err(&i915->drm, "[ENCODER:%d:%s][%s] Failed to enable link training\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return false;
}
@@ -778,14 +760,16 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, dp_phy,
link_status) < 0) {
drm_err(&i915->drm, "[ENCODER:%d:%s][%s] Failed to get link status\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return false;
}
if (drm_dp_clock_recovery_ok(link_status, crtc_state->lane_count)) {
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Clock recovery OK\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return true;
}
@@ -793,7 +777,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Same voltage tried 5 times\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return false;
}
@@ -801,7 +786,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Max Voltage Swing reached\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return false;
}
@@ -811,7 +797,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
if (!intel_dp_update_link_train(intel_dp, crtc_state, dp_phy)) {
drm_err(&i915->drm,
"[ENCODER:%d:%s][%s] Failed to update link training\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
return false;
}
@@ -829,7 +816,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp,
intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
drm_err(&i915->drm,
"[ENCODER:%d:%s][%s] Failed clock recovery %d times, giving up!\n",
- encoder->base.base.id, encoder->base.name, phy_name, max_cr_tries);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy), max_cr_tries);
return false;
}
@@ -907,15 +895,12 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
u32 training_pattern;
u8 link_status[DP_LINK_STATUS_SIZE];
bool channel_eq = false;
- char phy_name[10];
int delay_us;
delay_us = drm_dp_read_channel_eq_delay(&intel_dp->aux,
intel_dp->dpcd, dp_phy,
intel_dp_is_uhbr(crtc_state));
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name));
-
training_pattern = intel_dp_training_pattern(intel_dp, crtc_state, dp_phy);
/* Scrambling is disabled for TPS2/3 and enabled for TPS4 */
if (training_pattern != DP_TRAINING_PATTERN_4)
@@ -927,7 +912,7 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
drm_err(&i915->drm,
"[ENCODER:%d:%s][%s] Failed to start channel equalization\n",
encoder->base.base.id, encoder->base.name,
- phy_name);
+ drm_dp_phy_name(dp_phy));
return false;
}
@@ -938,7 +923,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
link_status) < 0) {
drm_err(&i915->drm,
"[ENCODER:%d:%s][%s] Failed to get link status\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
break;
}
@@ -949,7 +935,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Clock recovery check failed, cannot "
"continue channel equalization\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
break;
}
@@ -958,7 +945,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
channel_eq = true;
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Channel EQ done. DP Training successful\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
break;
}
@@ -968,7 +956,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
if (!intel_dp_update_link_train(intel_dp, crtc_state, dp_phy)) {
drm_err(&i915->drm,
"[ENCODER:%d:%s][%s] Failed to update link training\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
break;
}
}
@@ -978,7 +967,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp,
intel_dp_dump_link_status(intel_dp, dp_phy, link_status);
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s][%s] Channel equalization failed 5 times\n",
- encoder->base.base.id, encoder->base.name, phy_name);
+ encoder->base.base.id, encoder->base.name,
+ drm_dp_phy_name(dp_phy));
}
return channel_eq;
@@ -1026,7 +1016,6 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp,
{
struct intel_connector *connector = intel_dp->attached_connector;
struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
- char phy_name[10];
bool ret = false;
if (!intel_dp_link_training_clock_recovery(intel_dp, crtc_state, dp_phy))
@@ -1042,7 +1031,7 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp,
"[CONNECTOR:%d:%s][ENCODER:%d:%s][%s] Link Training %s at link rate = %d, lane count = %d\n",
connector->base.base.id, connector->base.name,
encoder->base.base.id, encoder->base.name,
- intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)),
+ drm_dp_phy_name(dp_phy),
ret ? "passed" : "failed",
crtc_state->port_clock, crtc_state->lane_count);
--
2.30.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
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