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

Dmitry Osipenko
2021-08-31T13:57:07Z

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(-)

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2.32.0