[v10,0/8] NVIDIA Tegra power management patches for 5.16

Message

Dmitry Osipenko Aug. 31, 2021, 1:54 p.m. UTC

This is a reduced version of the patchset which adds power management
support to NVIDIA Tegra drivers. Viresh Kumar asked to send these PD/OPP
patches separately for now to reduce the noise and finalize the review.

I implemented new dev_get_performance_state() GENPD callback as was
discussed in v8/v9. GR3D driver patch shows how it's used by consumer
drivers.

v10: - Replaced dev_pm_opp_from_clk_rate() with dev_pm_opp_get_current(),
       as was requested by Viresh Kumar.

     - Added more comments to the code and extended commit message,
       as was requested by Viresh Kumar and Ulf Hansson.

     - Renamed get_performance_state() to dev_get_performance_state(),
       as was requested by Ulf Hansson.

     - Factored out 'performance' code out of __genpd_dev_pm_attach() into
       a separate function genpd_dev_initialize_performance_state(), as was
       requested by Ulf Hansson.

     - Removed dev_suspended argument from dev_get_performance_state(),
       as was requested by Ulf Hansson. It's replaced by the usage of
       pm_runtime_status_suspended(), see genpd_dev_get_current_performance_state().

Dmitry Osipenko (8):
  opp: Add dev_pm_opp_get_current()
  opp: Allow dev_pm_opp_set_clkname() to replace released clock
  opp: Change type of dev_pm_opp_attach_genpd(names) argument
  PM: domains: Add dev_get_performance_state() callback
  soc/tegra: pmc: Implement dev_get_performance_state() callback
  soc/tegra: Add devm_tegra_core_dev_init_opp_table_simple()
  gpu: host1x: Add host1x_channel_stop()
  drm/tegra: gr3d: Support generic power domain and runtime PM

 drivers/base/power/domain.c  |  90 ++++++--
 drivers/gpu/drm/tegra/gr3d.c | 384 ++++++++++++++++++++++++++++++-----
 drivers/gpu/host1x/channel.c |   8 +
 drivers/opp/core.c           |  51 ++++-
 drivers/soc/tegra/pmc.c      | 101 +++++++++
 include/linux/host1x.h       |   1 +
 include/linux/pm_domain.h    |   2 +
 include/linux/pm_opp.h       |  14 +-
 include/soc/tegra/common.h   |  13 ++
 9 files changed, 586 insertions(+), 78 deletions(-)