From: zain wang <wzz@xxxxxxxxxxxxxx>
Panel would reset it's setting when it power down. It would forget the last
successed link training setting. So we can't use the last successful link
training setting to do fast link training. Let's reset fast_train_enable in
analogix_dp_bridge_disable();
Cc: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
Signed-off-by: zain wang <wzz@xxxxxxxxxxxxxx>
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 9 +++++----
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +-
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 52218d743059..919ae68e7670 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -582,14 +582,14 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
if (retval != 1) {
dev_err(dp->dev, "failed to read downspread %d\n",
retval);
- dp->fast_train_support = false;
+ dp->fast_train_enable = false;
} else {
- dp->fast_train_support =
+ dp->fast_train_enable =
(spread & DP_NO_AUX_HANDSHAKE_LINK_TRAINING) ?
true : false;
}
dev_dbg(dp->dev, "fast link training %s\n",
- dp->fast_train_support ? "supported" : "unsupported");
+ dp->fast_train_enable ? "supported" : "unsupported");
/* set enhanced mode if available */
analogix_dp_set_enhanced_mode(dp);
@@ -796,7 +796,7 @@ static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
static int analogix_dp_train_link(struct analogix_dp_device *dp)
{
- if (dp->fast_train_support)
+ if (dp->fast_train_enable)
return analogix_dp_fast_link_train(dp);
return analogix_dp_full_link_train(dp, dp->video_info.max_lane_count,
@@ -1200,6 +1200,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
DRM_ERROR("failed to setup the panel ret = %d\n", ret);
dp->psr_enable = false;
+ dp->fast_train_enable = false;
dp->dpms_mode = DRM_MODE_DPMS_OFF;
}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 6a96ef7e6934..403ff853464b 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -173,7 +173,7 @@ struct analogix_dp_device {
int hpd_gpio;
bool force_hpd;
bool psr_enable;
- bool fast_train_support;
+ bool fast_train_enable;
struct mutex panel_lock;
bool panel_is_modeset;
--
2.12.0.246.ga2ecc84866-goog
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