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Message-Id: <20180305222324.5872-6-enric.balletbo@collabora.com>
Date: Mon, 5 Mar 2018 23:22:57 +0100
From: Enric Balletbo i Serra <enric.balletbo@...labora.com>
To: architt@...eaurora.org, inki.dae@...sung.com,
thierry.reding@...il.com, hjc@...k-chips.com,
seanpaul@...omium.org, airlied@...ux.ie, tfiga@...omium.org,
heiko@...ech.de
Cc: hshi@...omium.org, wzz@...k-chips.com, hl@...k-chips.com,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
dianders@...omium.org, linux-rockchip@...ts.infradead.org,
orjan.eide@....com, m.szyprowski@...sung.com,
Tomeu Vizoso <tomeu.vizoso@...labora.com>,
Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: [PATCH v4 05/38] drm/bridge: analogix_dp: Don't change psr while bridge is disabled
From: zain wang <wzz@...k-chips.com>
There is a race between AUX CH bring-up and enabling bridge which will
cause link training to fail. To avoid hitting it, don't change psr state
while enabling the bridge.
Cc: Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc: Sean Paul <seanpaul@...omium.org>
Signed-off-by: zain wang <wzz@...k-chips.com>
Signed-off-by: Caesar Wang <wxt@...k-chips.com>
[seanpaul fixed up the commit message a bit and renamed *_supported to *_enabled]
Signed-off-by: Sean Paul <seanpaul@...omium.org>
Signed-off-by: Thierry Escande <thierry.escande@...labora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 15 ++++++++-------
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +-
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 +-
include/drm/bridge/analogix_dp.h | 2 +-
4 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index e738aa6de1af..ee00d3d920e0 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -98,18 +98,18 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
return 0;
}
-int analogix_dp_psr_supported(struct analogix_dp_device *dp)
+int analogix_dp_psr_enabled(struct analogix_dp_device *dp)
{
- return dp->psr_support;
+ return dp->psr_enable;
}
-EXPORT_SYMBOL_GPL(analogix_dp_psr_supported);
+EXPORT_SYMBOL_GPL(analogix_dp_psr_enabled);
int analogix_dp_enable_psr(struct analogix_dp_device *dp)
{
struct edp_vsc_psr psr_vsc;
- if (!dp->psr_support)
+ if (!dp->psr_enable)
return 0;
/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
@@ -131,7 +131,7 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
struct edp_vsc_psr psr_vsc;
int ret;
- if (!dp->psr_support)
+ if (!dp->psr_enable)
return 0;
/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
@@ -871,8 +871,8 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
/* Enable video */
analogix_dp_start_video(dp);
- dp->psr_support = analogix_dp_detect_sink_psr(dp);
- if (dp->psr_support)
+ dp->psr_enable = analogix_dp_detect_sink_psr(dp);
+ if (dp->psr_enable)
analogix_dp_enable_sink_psr(dp);
}
@@ -1117,6 +1117,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
if (ret)
DRM_ERROR("failed to setup the panel ret = %d\n", ret);
+ dp->psr_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 b039b28d8fcc..e135a42cb19e 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -170,7 +170,7 @@ struct analogix_dp_device {
int dpms_mode;
int hpd_gpio;
bool force_hpd;
- bool psr_support;
+ bool psr_enable;
struct mutex panel_lock;
bool panel_is_modeset;
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 36334839a3f8..3e8bf79bea58 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -82,7 +82,7 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
struct rockchip_dp_device *dp = to_dp(encoder);
int ret;
- if (!analogix_dp_psr_supported(dp->adp))
+ if (!analogix_dp_psr_enabled(dp->adp))
return;
DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index 711fff9b6803..e9a1116d2f8e 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -41,7 +41,7 @@ struct analogix_dp_plat_data {
struct drm_connector *);
};
-int analogix_dp_psr_supported(struct analogix_dp_device *dp);
+int analogix_dp_psr_enabled(struct analogix_dp_device *dp);
int analogix_dp_enable_psr(struct analogix_dp_device *dp);
int analogix_dp_disable_psr(struct analogix_dp_device *dp);
--
2.16.1
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