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media: vsp1: drm: Implement writeback support

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Extend the vsp1_du_atomic_flush() API with writeback support by adding
format, pitch and memory addresses of the writeback framebuffer.
Writeback completion is reported through the existing frame completion
callback with a new VSP1_DU_STATUS_WRITEBACK status flag.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Laurent Pinchart
2019-02-21 03:46:42 +02:00
parent 09e513e390
commit a63722aeb7
4 changed files with 55 additions and 2 deletions
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15
include/media/vsp1.h
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@@ -18,6 +18,7 @@ struct device;
int vsp1_du_init(struct device *dev);
#define VSP1_DU_STATUS_COMPLETE BIT(0)
#define VSP1_DU_STATUS_WRITEBACK BIT(1)
/**
* struct vsp1_du_lif_config - VSP LIF configuration
@@ -83,12 +84,26 @@ struct vsp1_du_crc_config {
unsigned int index;
};
/**
* struct vsp1_du_writeback_config - VSP writeback configuration parameters
* @pixelformat: plane pixel format (V4L2 4CC)
* @pitch: line pitch in bytes for the first plane
* @mem: DMA memory address for each plane of the frame buffer
*/
struct vsp1_du_writeback_config {
u32 pixelformat;
unsigned int pitch;
dma_addr_t mem[3];
};
/**
* struct vsp1_du_atomic_pipe_config - VSP atomic pipe configuration parameters
* @crc: CRC computation configuration
* @writeback: writeback configuration
*/
struct vsp1_du_atomic_pipe_config {
struct vsp1_du_crc_config crc;
struct vsp1_du_writeback_config writeback;
};
void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index);