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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2015-01-09 13:03:13 +0300 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2017-03-15 17:42:31 +0300 |
| commit | e72db3b1e50febff493bc5e3fb57da9cb8cc3d91 (patch) | |
| tree | 3ad57c2c2fe02185979ab99f6584c32b06c2431d /include/video | |
| parent | ba2b5277dc52cc96944d9765281bdf1e12681f66 (diff) | |
| download | linux-e72db3b1e50febff493bc5e3fb57da9cb8cc3d91.tar.xz | |
gpu: ipu-v3: add support for separate alpha channels
The IPUv3 can read 8-bit alpha values from a separate IDMAC channel driven
by the Alpha Transparency Controller (ATC) for the graphics IDMAC channels.
This allows to reduce memory bandwidth via a conditional read mechanism or
to support planar YUV formats with alpha transparency.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'include/video')
| -rw-r--r-- | include/video/imx-ipu-v3.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index 899d2b00ad6d..6af74f0cf161 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -161,6 +161,28 @@ enum ipu_channel_irq { #define IPUV3_CHANNEL_MEM_BG_ASYNC_ALPHA 52 #define IPUV3_NUM_CHANNELS 64 +static inline int ipu_channel_alpha_channel(int ch_num) +{ + switch (ch_num) { + case IPUV3_CHANNEL_G_MEM_IC_PRP_VF: + return IPUV3_CHANNEL_G_MEM_IC_PRP_VF_ALPHA; + case IPUV3_CHANNEL_G_MEM_IC_PP: + return IPUV3_CHANNEL_G_MEM_IC_PP_ALPHA; + case IPUV3_CHANNEL_MEM_FG_SYNC: + return IPUV3_CHANNEL_MEM_FG_SYNC_ALPHA; + case IPUV3_CHANNEL_MEM_FG_ASYNC: + return IPUV3_CHANNEL_MEM_FG_ASYNC_ALPHA; + case IPUV3_CHANNEL_MEM_BG_SYNC: + return IPUV3_CHANNEL_MEM_BG_SYNC_ALPHA; + case IPUV3_CHANNEL_MEM_BG_ASYNC: + return IPUV3_CHANNEL_MEM_BG_ASYNC_ALPHA; + case IPUV3_CHANNEL_MEM_VDI_PLANE1_COMB: + return IPUV3_CHANNEL_MEM_VDI_PLANE1_COMB_ALPHA; + default: + return -EINVAL; + } +} + int ipu_map_irq(struct ipu_soc *ipu, int irq); int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, enum ipu_channel_irq irq); |