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Message-Id: <20180130202913.28724-5-thierry.escande@collabora.com>
Date: Tue, 30 Jan 2018 21:28:34 +0100
From: Thierry Escande <thierry.escande@...labora.com>
To: Archit Taneja <architt@...eaurora.org>,
Inki Dae <inki.dae@...sung.com>,
Thierry Reding <thierry.reding@...il.com>,
Sandy Huang <hjc@...k-chips.com>,
Sean Paul <seanpaul@...omium.org>,
David Airlie <airlied@...ux.ie>,
Tomasz Figa <tfiga@...omium.org>,
Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc: Haixia Shi <hshi@...omium.org>,
Ørjan Eide <orjan.eide@....com>,
Zain Wang <wzz@...k-chips.com>,
Yakir Yang <ykk@...k-chips.com>, Lin Huang <hl@...k-chips.com>,
Douglas Anderson <dianders@...omium.org>,
Mark Yao <mark.yao@...k-chips.com>,
linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH v3 04/43] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge
From: zain wang <wzz@...k-chips.com>
There's a race between when bridge_disable and when vop_crtc_disable
are called. If the flush timer triggers a new psr work between these,
we will operate eDP without power shutdowned by bridge_disable. In this
case, moving activate/deactivate to enable/disable bridge to avoid it.
Cc: Stéphane Marchesin <marcheu@...omium.org>
Signed-off-by: zain wang <wzz@...k-chips.com>
Signed-off-by: Caesar Wang <wxt@...k-chips.com>
Signed-off-by: Sean Paul <seanpaul@...omium.org>
Signed-off-by: Thierry Escande <thierry.escande@...labora.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 7 +++++-
drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 30 ++++++++++++++++++++-----
drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 4 ++--
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ----
4 files changed, 32 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index eb88c52336a7..7d76ff47028d 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -150,12 +150,17 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
return ret;
}
- return 0;
+ return rockchip_drm_psr_activate(&dp->encoder);
}
static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data)
{
struct rockchip_dp_device *dp = to_dp(plat_data);
+ int ret;
+
+ ret = rockchip_drm_psr_deactivate(&dp->encoder);
+ if (ret != 0)
+ return ret;
clk_disable_unprepare(dp->pclk);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
index 3acfd576b7df..b3fb99c5b1fd 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
@@ -57,6 +57,24 @@ static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
return psr;
}
+static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder)
+{
+ struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
+ struct psr_drv *psr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ list_for_each_entry(psr, &drm_drv->psr_list, list) {
+ if (psr->encoder == encoder)
+ goto out;
+ }
+ psr = ERR_PTR(-ENODEV);
+
+out:
+ spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ return psr;
+}
+
static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state)
{
/*
@@ -115,14 +133,14 @@ static void psr_flush_handler(struct timer_list *t)
/**
* rockchip_drm_psr_activate - activate PSR on the given pipe
- * @crtc: CRTC to obtain the PSR encoder
+ * @encoder: encoder to obtain the PSR encoder
*
* Returns:
* Zero on success, negative errno on failure.
*/
-int rockchip_drm_psr_activate(struct drm_crtc *crtc)
+int rockchip_drm_psr_activate(struct drm_encoder *encoder)
{
- struct psr_drv *psr = find_psr_by_crtc(crtc);
+ struct psr_drv *psr = find_psr_by_encoder(encoder);
unsigned long flags;
if (IS_ERR(psr))
@@ -138,14 +156,14 @@ EXPORT_SYMBOL(rockchip_drm_psr_activate);
/**
* rockchip_drm_psr_deactivate - deactivate PSR on the given pipe
- * @crtc: CRTC to obtain the PSR encoder
+ * @encoder: encoder to obtain the PSR encoder
*
* Returns:
* Zero on success, negative errno on failure.
*/
-int rockchip_drm_psr_deactivate(struct drm_crtc *crtc)
+int rockchip_drm_psr_deactivate(struct drm_encoder *encoder)
{
- struct psr_drv *psr = find_psr_by_crtc(crtc);
+ struct psr_drv *psr = find_psr_by_encoder(encoder);
unsigned long flags;
if (IS_ERR(psr))
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
index b420cf1bf902..b1ea0155e57c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
@@ -18,8 +18,8 @@
void rockchip_drm_psr_flush_all(struct drm_device *dev);
int rockchip_drm_psr_flush(struct drm_crtc *crtc);
-int rockchip_drm_psr_activate(struct drm_crtc *crtc);
-int rockchip_drm_psr_deactivate(struct drm_crtc *crtc);
+int rockchip_drm_psr_activate(struct drm_encoder *encoder);
+int rockchip_drm_psr_deactivate(struct drm_encoder *encoder);
int rockchip_drm_psr_register(struct drm_encoder *encoder,
void (*psr_set)(struct drm_encoder *, bool enable));
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 7a137bc5708c..31304434847a 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -577,8 +577,6 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc,
WARN_ON(vop->event);
- rockchip_drm_psr_deactivate(&vop->crtc);
-
drm_crtc_vblank_off(crtc);
/*
@@ -951,8 +949,6 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
VOP_REG_SET(vop, common, standby, 0);
-
- rockchip_drm_psr_activate(&vop->crtc);
}
static bool vop_fs_irq_is_pending(struct vop *vop)
--
2.14.1
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