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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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MIPI-CSI has internal memory mapped buffers for the frame embedded (non-image) data. There are two buffers, for even and odd frames which need to be saved after an interrupt is raised. The packet data buffers size is 4 KiB and there is no status register in the hardware where the actual non-image data size can be read from. Hence the driver copies whole packet data buffer into a buffer provided by the FIMC driver. This will form a separate plane in the user buffer. When FIMC DMA engine is stopped by the driver due the to user space not keeping up with buffer de-queuing the MIPI-CSIS will still run, however it must discard data which is not captured by FIMC. Which frames are actually capture by MIPI-CSIS is determined by means of the s_tx_buffer subdev callback. When it is not called after a single embedded data frame has been captured and copied and before next embedded data frame interrupt occurrs, subsequent embedded data frames will be dropped. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> |
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| .. | ||
| blackfin | ||
| davinci | ||
| exynos-gsc | ||
| marvell-ccic | ||
| omap | ||
| omap3isp | ||
| s5p-fimc | ||
| s5p-g2d | ||
| s5p-jpeg | ||
| s5p-mfc | ||
| s5p-tv | ||
| soc_camera | ||
| arv.c | ||
| coda.c | ||
| coda.h | ||
| fsl-viu.c | ||
| indycam.c | ||
| indycam.h | ||
| Kconfig | ||
| m2m-deinterlace.c | ||
| Makefile | ||
| mem2mem_testdev.c | ||
| mx2_emmaprp.c | ||
| omap24xxcam-dma.c | ||
| omap24xxcam.c | ||
| omap24xxcam.h | ||
| sh_vou.c | ||
| timblogiw.c | ||
| via-camera.c | ||
| via-camera.h | ||
| vino.c | ||
| vino.h | ||
| vivi.c | ||