mbox series

[v6,00/10] Add PSR support for eDP

Message ID 1657544224-10680-1-git-send-email-quic_vpolimer@quicinc.com (mailing list archive)
Headers show
Series Add PSR support for eDP | expand

Message

Vinod Polimera July 11, 2022, 12:56 p.m. UTC
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@quicinc.com>
Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.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(-)

Comments

Douglas Anderson July 29, 2022, 12:22 a.m. UTC | #1
Hi,

On Mon, Jul 11, 2022 at 5:57 AM Vinod Polimera
<quic_vpolimer@quicinc.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@quicinc.com>
> Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
> Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.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(-)

I spent some time looking at the first few patches. I can try to look
at more later this week, though (as you've noticed) many of my reviews
are more nit-picks because I don't really have experience with PSR and
my overall knowledge of the Qualcomm DP driver is pretty weak.

I tried to at least pick to give a Tested-by, but when I did that it
didn't work flawlessly. I picked this series to the chromeos-5.15
tree, which is pretty close to mainline right now. I left it sitting
at a screen with a blinking cursor which pretty much means it's always
transitioning into and out of PSR. I've seen several glitches on the
screen with the series applied. :( No idea what's wrong--that's just
me black-box testing. I did try to add debug printouts to see if we
were hitting "PSR_UPDATE_ERROR_INT | PSR_WAKE_ERROR_INT" but I didn't
see my printouts...

FWIW: I'm running with KASAN enabled which could affect timings...
Glitches happen every few minutes or so for me and so far I haven't
see any glitches without KASAN, but that could just be chance...

-Doug
Robert Foss Aug. 4, 2022, 4:21 p.m. UTC | #2
On Fri, 29 Jul 2022 at 02:22, Doug Anderson <dianders@chromium.org> wrote:
>
> Hi,
>
> On Mon, Jul 11, 2022 at 5:57 AM Vinod Polimera
> <quic_vpolimer@quicinc.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@quicinc.com>
> > Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
> > Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.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(-)
>

Which tree does this series apply to?
Douglas Anderson Aug. 4, 2022, 5:54 p.m. UTC | #3
Hi,

On Thu, Aug 4, 2022 at 9:21 AM Robert Foss <robert.foss@linaro.org> wrote:
>
> On Fri, 29 Jul 2022 at 02:22, Doug Anderson <dianders@chromium.org> wrote:
> >
> > Hi,
> >
> > On Mon, Jul 11, 2022 at 5:57 AM Vinod Polimera
> > <quic_vpolimer@quicinc.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@quicinc.com>
> > > Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
> > > Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.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(-)
> >
>
> Which tree does this series apply to?

It ought to apply to msm-next, but as I mentioned in my reply to patch
#1 it doesn't apply to the top of msm-next. I think I also had to
manually apply a few of the later patches with "patch -p1".

-Doug