From 4bfbd561fc7d3758873ebfc38b0043065acb77f1 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Tue, 11 Sep 2018 15:26:54 +0200 Subject: [PATCH] gpu: ipu-v3: prg: add function to get channel configure status This allows channels using the PRG to check if a requested configuration update has been applied or is still pending. Signed-off-by: Lucas Stach [p.zabel@pengutronix.de: inverted logic: done -> pending] Signed-off-by: Philipp Zabel --- drivers/gpu/ipu-v3/ipu-prg.c | 16 ++++++++++++++++ include/video/imx-ipu-v3.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/gpu/ipu-v3/ipu-prg.c b/drivers/gpu/ipu-v3/ipu-prg.c index 38a3a9764e49..94b76badf677 100644 --- a/drivers/gpu/ipu-v3/ipu-prg.c +++ b/drivers/gpu/ipu-v3/ipu-prg.c @@ -347,6 +347,22 @@ int ipu_prg_channel_configure(struct ipuv3_channel *ipu_chan, } EXPORT_SYMBOL_GPL(ipu_prg_channel_configure); +bool ipu_prg_channel_configure_pending(struct ipuv3_channel *ipu_chan) +{ + int prg_chan = ipu_prg_ipu_to_prg_chan(ipu_chan->num); + struct ipu_prg *prg = ipu_chan->ipu->prg_priv; + struct ipu_prg_channel *chan; + + if (prg_chan < 0) + return false; + + chan = &prg->chan[prg_chan]; + WARN_ON(!chan->enabled); + + return ipu_pre_update_pending(prg->pres[chan->used_pre]); +} +EXPORT_SYMBOL_GPL(ipu_prg_channel_configure_pending); + static int ipu_prg_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index e582e8e7527a..b80b85f0d9d8 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -348,6 +348,7 @@ int ipu_prg_channel_configure(struct ipuv3_channel *ipu_chan, unsigned int axi_id, unsigned int width, unsigned int height, unsigned int stride, u32 format, uint64_t modifier, unsigned long *eba); +bool ipu_prg_channel_configure_pending(struct ipuv3_channel *ipu_chan); /* * IPU CMOS Sensor Interface (csi) functions