From e72db3b1e50febff493bc5e3fb57da9cb8cc3d91 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 9 Jan 2015 11:03:13 +0100 Subject: 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 --- include/video/imx-ipu-v3.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/video/imx-ipu-v3.h') 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); -- cgit v1.2.3-59-g8ed1b