On 2018-04-04 17:49, Daniel Vetter wrote:
On Wed, Apr 04, 2018 at 04:53:51PM +0530, ryadav@xxxxxxxxxxxxxx wrote:
On 2018-04-04 15:56, Daniel Vetter wrote:
> On Wed, Apr 04, 2018 at 02:34:40PM +0530, Rajesh Yadav wrote:
> > MSM display controller hardware (DPU) has an inbuilt RSC block
> > which can control power resources and bus bandwidth voting
> > based on frame timing parameters w/o DPU driver intervention.
> > In absence of RSC HW, DPU driver controls these resources.
> >
> > Downstream driver relies on RSC driver for controlling these
> > resources (via RSC HW block) for better power benefits.
> >
> > Since, DPU driver can control these resources, removing RSC
> > driver support. Corresponding devicetree binding are also removed.
>
> If it has benefits, why remove the support for this?
> -Daniel
Currently, the dpu driver has custom implementation for power
management.
We are planning to move to runtime_pm and this change is 1st step
toward
that goal.
We will re-introduce the RSC support at a later stage when all the
dependencies
are sent upstream.
That kind of context would be really good to explain in the commit
message
and cover letter.
-Daniel
Noted. Will take care of it going forward.
Thanks,
Rajesh
Thanks,
Rajesh
>
> >
> > Details for DPU driver upstreaming:
> > https://lists.freedesktop.org/archives/freedreno/2018-February/001678.html
> >
> > Changes in v2:
> > - Remove last reference to dpu_power_rsc_update
> > - Add DPU PATCH tag for better filtering
> > - Rebase on tip of for-next-staging
> >
> > Rajesh Yadav (2):
> > dt-bindings: msm/disp: Remove DPU RSC device bindings
> > drm/msm: Remove RSC support from DPU driver
> >
> > .../devicetree/bindings/display/msm/dpu-rsc.txt | 96 --
> > drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 130 +-
> > drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h | 6 -
> > drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 14 -
> > drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 9 +-
> > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 242 +---
> > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 7 -
> > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 1 -
> > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 20 +-
> > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h | 3 -
> > drivers/gpu/drm/msm/dpu_dbg.c | 27 -
> > drivers/gpu/drm/msm/dpu_dbg.h | 10 -
> > drivers/gpu/drm/msm/dpu_power_handle.c | 73 +-
> > drivers/gpu/drm/msm/dpu_power_handle.h | 4 -
> > drivers/gpu/drm/msm/dpu_rsc.c | 1367
> > --------------------
> > drivers/gpu/drm/msm/dpu_rsc_hw.c | 818
> > ------------
> > drivers/gpu/drm/msm/dpu_rsc_priv.h | 191 ---
> > include/linux/dpu_rsc.h | 302 -----
> > 18 files changed, 42 insertions(+), 3278 deletions(-)
> > delete mode 100644
> > Documentation/devicetree/bindings/display/msm/dpu-rsc.txt
> > delete mode 100644 drivers/gpu/drm/msm/dpu_rsc.c
> > delete mode 100644 drivers/gpu/drm/msm/dpu_rsc_hw.c
> > delete mode 100644 drivers/gpu/drm/msm/dpu_rsc_priv.h
> > delete mode 100644 include/linux/dpu_rsc.h
> >
> > --
> > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora
> > Forum,
> > a Linux Foundation Collaborative Project
> >
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