linux-kernel - Re: [PATCH v6 00/10] Add PSR support for eDP

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Date:   Thu, 4 Aug 2022 18:21:05 +0200
From:   Robert Foss <robert.foss@...aro.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Rob Clark <robdclark@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        quic_kalyant <quic_kalyant@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Kuogee Hsieh (QUIC)" <quic_khsieh@...cinc.com>,
        quic_vproddut <quic_vproddut@...cinc.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        "Aravind Venkateswaran (QUIC)" <quic_aravindh@...cinc.com>,
        "Abhinav Kumar (QUIC)" <quic_abhinavk@...cinc.com>,
        Sankeerth Billakanti <quic_sbillaka@...cinc.com>
Subject: Re: [PATCH v6 00/10] Add PSR support for eDP

On Fri, 29 Jul 2022 at 02:22, Doug Anderson <dianders@...omium.org> wrote:
>
> Hi,
>
> On Mon, Jul 11, 2022 at 5:57 AM Vinod Polimera
> <quic_vpolimer@...cinc.com> wrote:
> >
> > 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.
> >
> > 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>
> >
> > Vinod Polimera (10):
> >   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: add PSR support for eDP interface in dpu driver
> >   drm/msm/disp/dpu: check for crtc enable rather than crtc active to
> >     release shared resources
> >
> >  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 |  56 +++++----
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h |   8 --
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     |   2 +-
> >  drivers/gpu/drm/msm/dp/dp_catalog.c         |  81 ++++++++++++
> >  drivers/gpu/drm/msm/dp/dp_catalog.h         |   4 +
> >  drivers/gpu/drm/msm/dp/dp_ctrl.c            |  73 +++++++++++
> >  drivers/gpu/drm/msm/dp/dp_ctrl.h            |   3 +
> >  drivers/gpu/drm/msm/dp/dp_display.c         |  31 +++--
> >  drivers/gpu/drm/msm/dp/dp_display.h         |   2 +
> >  drivers/gpu/drm/msm/dp/dp_drm.c             | 184 ++++++++++++++++++++++++++--
> >  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 ++
> >  19 files changed, 631 insertions(+), 65 deletions(-)
>

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