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drm/mipi-dsi: add flag for sending all DSC slices in one packet

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The MIPI DSI v1.3 spec defines two modes for transporting compressed
pixel data: one slice per packet or multiple slice widths in a single
packet (Section 8.8.24 Figure 40).

Add a MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT flag that panel drivers can
set to indicate that all DSC slices for a line should be packed into a
single packet. When unset should default to 1 slice per packet.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Alexander Koskovich <akoskovich@pm.me>
Tested-by: Junjie Cao <junjie.cao@linux.dev>
Acked-by: Maxime Ripard <mripard@kernel.org> # from v1
Link: https://patch.msgid.link/20260318-dsi-dsc-slice-per-pkt-v2-1-0a1b316f8250@pm.me
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Alexander Koskovich 2026-03-18 09:54:04 +00:00 committed by Dmitry Baryshkov
parent 2e5268fc45
commit ffa88de8dd
1 changed files with 2 additions and 0 deletions
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2
include/drm/drm_mipi_dsi.h
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@ -138,6 +138,8 @@ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node);
#define MIPI_DSI_MODE_LPM BIT(11)
/* transmit data ending at the same time for all lanes within one hsync */
#define MIPI_DSI_HS_PKT_END_ALIGNED BIT(12)
/* pack all DSC slices for a line into a single packet */
#define MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT BIT(13)
enum mipi_dsi_pixel_format {
MIPI_DSI_FMT_RGB888,