linux-kernel - [PATCH v8 00/15] Add PSR support for eDP

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Message-Id: <1665576159-3749-1-git-send-email-quic_vpolimer@quicinc.com>
Date:   Wed, 12 Oct 2022 17:32:24 +0530
From:   Vinod Polimera <quic_vpolimer@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, swboyd@...omium.org,
        quic_kalyant@...cinc.com, dmitry.baryshkov@...aro.org,
        quic_khsieh@...cinc.com, quic_vproddut@...cinc.com,
        quic_bjorande@...cinc.com, quic_aravindh@...cinc.com,
        quic_abhinavk@...cinc.com, quic_sbillaka@...cinc.com
Subject: [PATCH v8 00/15] Add PSR support for eDP

Changes in v2:
  - Use dp bridge to set psr entry/exit instead of dpu_enocder.
  - Don't modify whitespaces.
  - Set self refresh aware from atomic_check.
  - Set self refresh aware only if psr is supported.
  - Provide a stub for msm_dp_display_set_psr.
  - Move dp functions to bridge code.

Changes in v3:
  - Change callback names to reflect atomic interfaces.
  - Move bridge callback change to separate patch as suggested by Dmitry.
  - Remove psr function declaration from msm_drv.h.
  - Set self_refresh_aware flag only if psr is supported.
  - Modify the variable names to simpler form.
  - Define bit fields for PSR settings.
  - Add comments explaining the steps to enter/exit psr.
  - Change DRM_INFO to drm_dbg_db. 

Changes in v4:
  - Move the get crtc functions to drm_atomic.
  - Add atomic functions for DP bridge too.
  - Add ternary operator to choose eDP or DP ops.
  - Return true/false instead of 1/0.
  - mode_valid missing in the eDP bridge ops.
  - Move the functions to get crtc into drm_atomic.c.
  - Fix compilation issues.
  - Remove dpu_assign_crtc and get crtc from drm_enc instead of dpu_enc.
  - Check for crtc state enable while reserving resources.

Changes in v5:
  - Move the mode_valid changes into a different patch.
  - Complete psr_op_comp only when isr is set.
  - Move the DP atomic callback changes to a different patch.
  - Get crtc from drm connector state crtc.
  - Move to separate patch for check for crtc state enable while
reserving resources.

Changes in v6:
  - Remove crtc from dpu_encoder_virt struct.
  - fix crtc check during vblank toggle crtc.
  - Misc changes. 

Changes in v7:
  - Add fix for underrun issue on kasan build.

Changes in v8:
  - Drop the enc spinlock as it won't serve any purpose in
protetcing conn state.(Dmitry/Doug)

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@...cinc.com>
Signed-off-by: Kalyan Thota <quic_kalyant@...cinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@...cinc.com>

Sankeerth Billakanti (1):
  drm/msm/dp: disable self_refresh_aware after entering psr

Vinod Polimera (14):
  drm/msm/disp/dpu: clear dpu_assign_crtc and get crtc from connector
    state instead of dpu_enc
  drm: add helper functions to retrieve old and new crtc
  drm/msm/dp: use atomic callbacks for DP bridge ops
  drm/msm/dp: Add basic PSR support for eDP
  drm/msm/dp: use the eDP bridge ops to validate eDP modes
  drm/bridge: use atomic enable/disable callbacks for panel bridge
  drm/bridge: add psr support for panel bridge callbacks
  drm/msm/disp/dpu: use atomic enable/disable callbacks for encoder
    functions
  drm/msm/disp/dpu: check for crtc enable rather than crtc active to
    release shared resources
  drm/msm/disp/dpu: add PSR support for eDP interface in dpu driver
  drm/msm/disp/dpu: get timing engine status from intf status register
  drm/msm/disp/dpu: wait for extra vsync till timing engine status is
    disabled
  drm/msm/disp/dpu: reset the datapath after timing engine disable
  drm/msm/disp/dpu: clear active interface in the datapath cleanup

 drivers/gpu/drm/bridge/panel.c                     |  68 ++++++-
 drivers/gpu/drm/drm_atomic.c                       |  60 ++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c           |  17 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c        |  71 +++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h        |   8 -
 .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c   |  22 +++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c     |   3 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h     |  12 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c        |   8 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c            |   2 +-
 drivers/gpu/drm/msm/dp/dp_catalog.c                |  80 ++++++++
 drivers/gpu/drm/msm/dp/dp_catalog.h                |   4 +
 drivers/gpu/drm/msm/dp/dp_ctrl.c                   |  80 ++++++++
 drivers/gpu/drm/msm/dp/dp_ctrl.h                   |   3 +
 drivers/gpu/drm/msm/dp/dp_display.c                |  36 ++--
 drivers/gpu/drm/msm/dp/dp_display.h                |   2 +
 drivers/gpu/drm/msm/dp/dp_drm.c                    | 207 ++++++++++++++++++++-
 drivers/gpu/drm/msm/dp/dp_drm.h                    |   9 +-
 drivers/gpu/drm/msm/dp/dp_link.c                   |  36 ++++
 drivers/gpu/drm/msm/dp/dp_panel.c                  |  22 +++
 drivers/gpu/drm/msm/dp/dp_panel.h                  |   6 +
 drivers/gpu/drm/msm/dp/dp_reg.h                    |  27 +++
 include/drm/drm_atomic.h                           |   7 +
 23 files changed, 705 insertions(+), 85 deletions(-)

-- 
2.7.4