linux-dev/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c, branch linus/master

drm/msm/dpu: limit writeback modes according to max_linewidth

2022-05-18T22:43:08Z

Writeback modes were being added according to mode_config.max_width but this is assigned to double of max_mixer_width. For compositors/clients using a single SSPP, this will fail the dpu_plane's atomic check as it checks for max_linewidth. Limit writeback modes according to max_linewidth to allow even compositors/clients which use only a single SSPP to use writeback. Fixes: 77b001acdcfeb ("drm/msm/dpu: add the writeback connector layer") Reported-by: Jessica Zhang Signed-off-by: Abhinav Kumar Tested-by: Jessica Zhang # Trogdor (SC8170) Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/486176/ Link: https://lore.kernel.org/r/20220513225959.19004-1-quic_abhinavk@quicinc.com Signed-off-by: Abhinav Kumar

drm/msm/dpu: add the writeback connector layer

2022-05-01T23:13:00Z

Introduce the dpu_writeback module which serves as the interface between dpu operations and the drm_writeback. This module manages the connector related operations for dpu writeback. changes in v2: - start using drm_writeback_connector_init_with_encoder() - drop unnecessary arguments from dpu_writeback_init() - rebase on msm-next tip and remove usage of priv->connectors changes in v3: - none changes in v4: - none changes in v5: - store the drm_enc in the dpu_wb_conn to be used while using dpu_encoder APIs Signed-off-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/483520/ Link: https://lore.kernel.org/r/1650984096-9964-15-git-send-email-quic_abhinavk@quicinc.com Signed-off-by: Dmitry Baryshkov