This is a series of changes for DSI to enable command mode support
for DSC v1.2.
This includes:
1) Rounding up `hdisplay / 3` in dsc_timing_setup()
2) Adjusting pclk_rate to account for compression
3) Fixing incorrect uses of slice_count in DSI DSC calculations
4) Setting the DATA_COMPRESS bit when DSC is enabled
With these changes (and the dependency below), DSC v1.2 should work over
DSI in command mode.
Note: Changes that add DSC v1.2 support for video mode will be posted
with the DP support changes.
Depends-on: "add DSC 1.2 dpu supports" [1] and "Introduce MSM-specific
DSC helpers" [2]
[1] https://patchwork.freedesktop.org/series/116789/
[2] https://patchwork.freedesktop.org/series/115833/
Signed-off-by: Jessica Zhang <[email protected]>
---
Changes in v4:
- Clarified slice_per_pkt comment regarding pkt_per_line calculations
- Reworded commit message for "drm/msm/dsi: Remove incorrect references
to slice_count"
- Wrapped INTF_SC7280_MASK macro definition in parentheses
- Fixed incorrect commit hash in "msm/drm/dsi: Round up DSC hdisplay
calculation"
- Picked up Reviewed-by tag
- Link to v3: https://lore.kernel.org/r/[email protected]
Changes in v3:
- Added fix to round up hdisplay DSC adjustment
- Fixed inconsistent whitespace in dpu_hw_intf_ops comment doc
- Moved placement of dpu_hw_intf_enable_compression
- Picked up "drm/msm/dsi: Fix calculation for pkt_per_line" patch and
squashed all slice_count fixes into a single patch
- Use drm_mode_vrefresh() to calculate adjusted pclk rate
- Moved compressed pclk adjustment to dsi_adjust_compressed_pclk() helper
- Rebased changes on top of updated dependencies
- Reworded commit message for "drm/msm/dpu: Set DATA_COMPRESS for
command mode" for clarity
- Removed revision changelog in commit messages
- Link to v2: https://lore.kernel.org/r/[email protected]
Changes in v2:
- Changed has_data_compress dpu_cap to a DATA_COMPRESS INTF feature flag
- Changed pclk math to only divide hdisplay by compression ratio
- Reworded word count TODO comment
- Make DATA_COMPRESS an INTF flag
- Read INTF_CONFIG2 before writing to DATA_COMPRESS bit
- Fixed whitespace issue in macro definition
- Removed `inline` from dpu_hw_intf_enable_compression declaration
- Only set dpu_hw_intf_ops.data_compress if DATA_COMPRESS feature is set
- Reworded commit messages and cover letter for clarity
- Link to v1: https://lore.kernel.org/r/[email protected]
---
Jessica Zhang (5):
msm/drm/dsi: Round up DSC hdisplay calculation
drm/msm/dsi: Adjust pclk rate for compression
drm/msm/dpu: Add DPU_INTF_DATA_COMPRESS feature flag
drm/msm/dpu: Set DATA_COMPRESS for command mode
drm/msm/dsi: Remove incorrect references to slice_count
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 3 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 3 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 2 +
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 13 ++++++
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h | 2 +
drivers/gpu/drm/msm/dsi/dsi_host.c | 51 +++++++++++++++-------
6 files changed, 58 insertions(+), 16 deletions(-)
---
base-commit: 2f0218fa4805d7c7eed8dc072e1bdf9f100492c7
change-id: 20230405-add-dsc-support-fe130ba49841
Best regards,
--
Jessica Zhang <[email protected]>