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authorLucas Stach <l.stach@pengutronix.de>2019-04-12 18:59:40 +0300
committerPhilipp Zabel <p.zabel@pengutronix.de>2019-04-23 15:54:16 +0300
commitd4fad0a426c6e26f48c9a7cdd21a7fe9c198d645 (patch)
treef316db9449635ed6afacf03b2252639417f9978e /drivers/gpu/ipu-v3
parentdc4060a5dc2557e6b5aa813bf5b73677299d62d2 (diff)
downloadlinux-d4fad0a426c6e26f48c9a7cdd21a7fe9c198d645.tar.xz
gpu: ipu-v3: dp: fix CSC handling
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>
Diffstat (limited to 'drivers/gpu/ipu-v3')
-rw-r--r--drivers/gpu/ipu-v3/ipu-dp.c12
1 files 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;