* [PATCH] drm/i915: Cache DisplayPort link signal levels
@ 2016-04-20 10:21 Mika Kahola
2016-04-20 13:56 ` ✗ Fi.CI.BAT: failure for " Patchwork
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Mika Kahola @ 2016-04-20 10:21 UTC (permalink / raw)
To: intel-gfx
Cache DisplayPort signal levels including voltage swing and
pre-emphasis. After resume, the DP link is re-trained by trying
previusly computed voltage swing and pre-emphasis. In case, we
are not able to train the link by using these settings, the link
training is restarted. Now, the link is trained until the signal
levels of previus link training is achieved and clock recovery
is achieved.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91393
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 1 +
drivers/gpu/drm/i915/intel_dp_link_training.c | 7 ++++++-
drivers/gpu/drm/i915/intel_drv.h | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index a3fc494..bb44a7c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3622,6 +3622,7 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
DP_TRAIN_PRE_EMPHASIS_SHIFT);
intel_dp->DP = (intel_dp->DP & ~mask) | signal_levels;
+ intel_dp->signal_levels = signal_levels;
I915_WRITE(intel_dp->output_reg, intel_dp->DP);
POSTING_READ(intel_dp->output_reg);
diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c
index 0b8eefc..05d450d 100644
--- a/drivers/gpu/drm/i915/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/intel_dp_link_training.c
@@ -149,6 +149,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
loop_tries = 0;
for (;;) {
uint8_t link_status[DP_LINK_STATUS_SIZE];
+ DRM_DEBUG_KMS("signal levels (target/current): %.8x/%.8x\n",
+ intel_dp->target_signal_levels, intel_dp->signal_levels);
drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd);
if (!intel_dp_get_link_status(intel_dp, link_status)) {
@@ -156,7 +158,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp)
break;
}
- if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) {
+ if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count) &&
+ intel_dp->signal_levels >= intel_dp->target_signal_levels) {
DRM_DEBUG_KMS("clock recovery OK\n");
break;
}
@@ -324,6 +327,8 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp)
if (channel_eq) {
intel_dp->train_set_valid = true;
+ intel_dp->target_signal_levels = max(intel_dp->signal_levels,
+ intel_dp->target_signal_levels);
DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n");
}
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index beed9e8..e58f3935 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -859,6 +859,7 @@ struct intel_dp {
void (*prepare_link_retrain)(struct intel_dp *intel_dp);
bool train_set_valid;
+ uint32_t signal_levels, target_signal_levels;
/* Displayport compliance testing */
unsigned long compliance_test_type;
--
1.9.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 4+ messages in thread
* ✗ Fi.CI.BAT: failure for drm/i915: Cache DisplayPort link signal levels
2016-04-20 10:21 [PATCH] drm/i915: Cache DisplayPort link signal levels Mika Kahola
@ 2016-04-20 13:56 ` Patchwork
2016-04-22 16:53 ` ✓ Fi.CI.BAT: success " Patchwork
2016-04-24 13:51 ` Patchwork
2 siblings, 0 replies; 4+ messages in thread
From: Patchwork @ 2016-04-20 13:56 UTC (permalink / raw)
To: Mika Kahola; +Cc: intel-gfx
== Series Details ==
Series: drm/i915: Cache DisplayPort link signal levels
URL : https://patchwork.freedesktop.org/series/5973/
State : failure
== Summary ==
Series 5973v1 drm/i915: Cache DisplayPort link signal levels
http://patchwork.freedesktop.org/api/1.0/series/5973/revisions/1/mbox/
Test drv_module_reload_basic:
pass -> DMESG-FAIL (snb-dellxps)
Test gem_busy:
Subgroup basic-bsd1:
skip -> INCOMPLETE (snb-dellxps)
Test gem_exec_nop:
Subgroup basic:
pass -> FAIL (snb-dellxps)
Test gem_exec_store:
Subgroup basic-all:
pass -> FAIL (snb-dellxps)
Test gem_exec_suspend:
Subgroup basic:
pass -> FAIL (snb-dellxps)
Subgroup basic-s3:
dmesg-warn -> PASS (bsw-nuc-2)
Subgroup basic-s4:
skip -> FAIL (snb-dellxps)
Test gem_sync:
Subgroup basic-all:
pass -> FAIL (snb-dellxps)
Subgroup basic-blt:
pass -> FAIL (snb-dellxps)
Subgroup basic-default:
pass -> FAIL (snb-dellxps)
Test kms_frontbuffer_tracking:
Subgroup basic:
pass -> FAIL (snb-dellxps)
Test kms_pipe_crc_basic:
Subgroup suspend-read-crc-pipe-c:
pass -> DMESG-WARN (bsw-nuc-2)
skip -> DMESG-FAIL (snb-dellxps)
bdw-nuci7 total:192 pass:180 dwarn:0 dfail:0 fail:0 skip:12
bsw-nuc-2 total:191 pass:151 dwarn:1 dfail:0 fail:0 skip:39
byt-nuc total:191 pass:153 dwarn:0 dfail:0 fail:0 skip:38
hsw-brixbox total:192 pass:168 dwarn:0 dfail:0 fail:0 skip:24
hsw-gt2 total:192 pass:173 dwarn:0 dfail:0 fail:0 skip:19
ilk-hp8440p total:192 pass:135 dwarn:0 dfail:0 fail:0 skip:57
ivb-t430s total:192 pass:164 dwarn:0 dfail:0 fail:0 skip:28
skl-i7k-2 total:192 pass:167 dwarn:0 dfail:0 fail:0 skip:25
skl-nuci5 total:192 pass:181 dwarn:0 dfail:0 fail:0 skip:11
snb-dellxps total:83 pass:61 dwarn:0 dfail:2 fail:8 skip:11
snb-x220t failed to collect. IGT log at Patchwork_1954/snb-x220t/igt.log
Results at /archive/results/CI_IGT_test/Patchwork_1954/
16dfbb643433f63a34f226eb1f3d9f509cba9c1b drm-intel-nightly: 2016y-04m-20d-12h-50m-59s UTC integration manifest
ee6a7c9 drm/i915: Cache DisplayPort link signal levels
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 4+ messages in thread
* ✓ Fi.CI.BAT: success for drm/i915: Cache DisplayPort link signal levels
2016-04-20 10:21 [PATCH] drm/i915: Cache DisplayPort link signal levels Mika Kahola
2016-04-20 13:56 ` ✗ Fi.CI.BAT: failure for " Patchwork
@ 2016-04-22 16:53 ` Patchwork
2016-04-24 13:51 ` Patchwork
2 siblings, 0 replies; 4+ messages in thread
From: Patchwork @ 2016-04-22 16:53 UTC (permalink / raw)
To: Mika Kahola; +Cc: intel-gfx
== Series Details ==
Series: drm/i915: Cache DisplayPort link signal levels
URL : https://patchwork.freedesktop.org/series/5973/
State : success
== Summary ==
Series 5973v1 drm/i915: Cache DisplayPort link signal levels
http://patchwork.freedesktop.org/api/1.0/series/5973/revisions/1/mbox/
bdw-nuci7 total:193 pass:181 dwarn:0 dfail:0 fail:0 skip:12
bdw-ultra total:193 pass:170 dwarn:0 dfail:0 fail:0 skip:23
bsw-nuc-2 total:192 pass:153 dwarn:0 dfail:0 fail:0 skip:39
byt-nuc total:192 pass:154 dwarn:0 dfail:0 fail:0 skip:38
hsw-brixbox total:193 pass:169 dwarn:0 dfail:0 fail:0 skip:24
hsw-gt2 total:193 pass:174 dwarn:0 dfail:0 fail:0 skip:19
ilk-hp8440p total:193 pass:136 dwarn:0 dfail:0 fail:0 skip:57
ivb-t430s total:193 pass:165 dwarn:0 dfail:0 fail:0 skip:28
skl-i7k-2 total:193 pass:168 dwarn:0 dfail:0 fail:0 skip:25
skl-nuci5 total:193 pass:182 dwarn:0 dfail:0 fail:0 skip:11
snb-dellxps total:193 pass:155 dwarn:0 dfail:0 fail:0 skip:38
snb-x220t total:193 pass:155 dwarn:0 dfail:0 fail:1 skip:37
Results at /archive/results/CI_IGT_test/Patchwork_1999/
43973a44fd376caef9419c7abb460b47520a1734 drm-intel-nightly: 2016y-04m-22d-13h-33m-45s UTC integration manifest
1351b37 drm/i915: Cache DisplayPort link signal levels
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 4+ messages in thread
* ✓ Fi.CI.BAT: success for drm/i915: Cache DisplayPort link signal levels
2016-04-20 10:21 [PATCH] drm/i915: Cache DisplayPort link signal levels Mika Kahola
2016-04-20 13:56 ` ✗ Fi.CI.BAT: failure for " Patchwork
2016-04-22 16:53 ` ✓ Fi.CI.BAT: success " Patchwork
@ 2016-04-24 13:51 ` Patchwork
2 siblings, 0 replies; 4+ messages in thread
From: Patchwork @ 2016-04-24 13:51 UTC (permalink / raw)
To: Mika Kahola; +Cc: intel-gfx
== Series Details ==
Series: drm/i915: Cache DisplayPort link signal levels
URL : https://patchwork.freedesktop.org/series/5973/
State : success
== Summary ==
Series 5973v1 drm/i915: Cache DisplayPort link signal levels
http://patchwork.freedesktop.org/api/1.0/series/5973/revisions/1/mbox/
byt-nuc total:192 pass:154 dwarn:0 dfail:0 fail:0 skip:38
ilk-hp8440p total:193 pass:136 dwarn:0 dfail:0 fail:0 skip:57
ivb-t430s total:193 pass:165 dwarn:0 dfail:0 fail:0 skip:28
snb-dellxps total:193 pass:155 dwarn:0 dfail:0 fail:0 skip:38
Results at /archive/results/CI_IGT_test/Patchwork_2041/
1e81bacf1f7fdbdf83f46b55389713fa13cb1256 drm-intel-nightly: 2016y-04m-24d-10h-36m-11s UTC integration manifest
fb62cab drm/i915: Cache DisplayPort link signal levels
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-04-20 10:21 [PATCH] drm/i915: Cache DisplayPort link signal levels Mika Kahola
2016-04-20 13:56 ` ✗ Fi.CI.BAT: failure for " Patchwork
2016-04-22 16:53 ` ✓ Fi.CI.BAT: success " Patchwork
2016-04-24 13:51 ` Patchwork
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