From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org,
Jonathan Marek <jonathan@marek.ca>
Subject: [PATCH AUTOSEL 4.14 30/95] gpu: ipu-v3: dp: fix CSC handling
Date: Tue, 7 May 2019 01:37:19 -0400 [thread overview]
Message-ID: <20190507053826.31622-30-sashal@kernel.org> (raw)
In-Reply-To: <20190507053826.31622-1-sashal@kernel.org>
From: Lucas Stach <l.stach@pengutronix.de>
[ Upstream commit d4fad0a426c6e26f48c9a7cdd21a7fe9c198d645 ]
Initialize the flow input colorspaces to unknown and reset to that value
when the channel gets disabled. This avoids the state getting mixed up
with a previous mode.
Also keep the CSC settings for the background flow intact when disabling
the foreground flow.
Root-caused-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/ipu-v3/ipu-dp.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/ipu-v3/ipu-dp.c b/drivers/gpu/ipu-v3/ipu-dp.c
index 9b2b3fa479c4..5e44ff1f2085 100644
--- a/drivers/gpu/ipu-v3/ipu-dp.c
+++ b/drivers/gpu/ipu-v3/ipu-dp.c
@@ -195,7 +195,8 @@ int ipu_dp_setup_channel(struct ipu_dp *dp,
ipu_dp_csc_init(flow, flow->foreground.in_cs, flow->out_cs,
DP_COM_CONF_CSC_DEF_BOTH);
} else {
- if (flow->foreground.in_cs == flow->out_cs)
+ if (flow->foreground.in_cs == IPUV3_COLORSPACE_UNKNOWN ||
+ flow->foreground.in_cs == flow->out_cs)
/*
* foreground identical to output, apply color
* conversion on background
@@ -261,6 +262,8 @@ void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync)
struct ipu_dp_priv *priv = flow->priv;
u32 reg, csc;
+ dp->in_cs = IPUV3_COLORSPACE_UNKNOWN;
+
if (!dp->foreground)
return;
@@ -268,8 +271,9 @@ void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync)
reg = readl(flow->base + DP_COM_CONF);
csc = reg & DP_COM_CONF_CSC_DEF_MASK;
- if (csc == DP_COM_CONF_CSC_DEF_FG)
- reg &= ~DP_COM_CONF_CSC_DEF_MASK;
+ reg &= ~DP_COM_CONF_CSC_DEF_MASK;
+ if (csc == DP_COM_CONF_CSC_DEF_BOTH || csc == DP_COM_CONF_CSC_DEF_BG)
+ reg |= DP_COM_CONF_CSC_DEF_BG;
reg &= ~DP_COM_CONF_FG_EN;
writel(reg, flow->base + DP_COM_CONF);
@@ -347,6 +351,8 @@ int ipu_dp_init(struct ipu_soc *ipu, struct device *dev, unsigned long base)
mutex_init(&priv->mutex);
for (i = 0; i < IPUV3_NUM_FLOWS; i++) {
+ priv->flow[i].background.in_cs = IPUV3_COLORSPACE_UNKNOWN;
+ priv->flow[i].foreground.in_cs = IPUV3_COLORSPACE_UNKNOWN;
priv->flow[i].foreground.foreground = true;
priv->flow[i].base = priv->base + ipu_dp_flow_base[i];
priv->flow[i].priv = priv;
--
2.20.1
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next prev parent reply other threads:[~2019-05-07 5:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190507053826.31622-1-sashal@kernel.org>
2019-05-07 5:37 ` [PATCH AUTOSEL 4.14 28/95] drm/sun4i: Set device driver data at bind time for use in unbind Sasha Levin
2019-05-07 5:37 ` Sasha Levin [this message]
2019-05-07 5:37 ` [PATCH AUTOSEL 4.14 31/95] drm/imx: don't skip DP channel disable for background plane Sasha Levin
2019-05-07 5:37 ` [PATCH AUTOSEL 4.14 49/95] drm/i915: Disable LP3 watermarks on all SNB machines Sasha Levin
2019-05-07 5:37 ` [PATCH AUTOSEL 4.14 55/95] drm/i915: Downgrade Gen9 Plane WM latency error Sasha Levin
2019-05-07 5:37 ` [PATCH AUTOSEL 4.14 67/95] drm/rockchip: psr: do not dereference encoder before it is null checked Sasha Levin
2019-05-07 5:38 ` [PATCH AUTOSEL 4.14 82/95] drm/rockchip: fix for mailbox read validation Sasha Levin
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