Hi, This series fixes problems and adds features to OPP API that are required for implementation of a power domain driver for NVIDIA Tegra SoCs. It is a continuation of [1], where Viresh Kumar asked to factor OPP patches into a separate series. I factored out the patches into this series, addressed the previous review comments and re-based patches on top of [2], which replaced some of my patches that added resource-managed helpers. [1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=221130 [2] https://lore.kernel.org/linux-pm/20210101165507.19486-1-tiny.windzz@xxxxxxxxx/ Changelog: v4: - Fixed missing export of devm_pm_opp_attach_genpd(). Thanks to Nicolas Chauvet for catching this problem. - Removed a bit questionable locking from dev_pm_opp_sync_regulators() and dev_pm_opp_set_voltage(). We may come back to the OPP locking sometime later, it's not an essential problem right now. I moved the lock from OPP core to the PD driver for now. - Added "Make _set_opp_custom() work without regulators" patch, which is made on top of "Prepare for ->set_opp() helper to work without regulators" patch from Viresh Kumar. The set_opp() helper now works without regulators. v3: - Reordered patches by importance. - Added locking to dev_pm_opp_set_voltage(). - Reworked "Fix adding OPP entries in a wrong order if rate is unavailable" patch, like it was suggested by Viresh Kumar. - Reworked "Support set_opp() customization without requiring to use regulators" patch, like it was suggested by Viresh Kumar. The opp_table->set_opp_data is now allocated by dev_pm_opp_register_set_opp_helper(). The set_opp_data is refcounted now and can be allocated by any other OPP functions if this will become needed in the future for other OPP API changes. Dmitry Osipenko (4): opp: Export devm_pm_opp_attach_genpd() opp: Add dev_pm_opp_sync_regulators() opp: Add dev_pm_opp_set_voltage() opp: Make _set_opp_custom() work without regulators drivers/opp/core.c | 119 +++++++++++++++++++++++++++++++++++++---- include/linux/pm_opp.h | 12 +++++ 2 files changed, 122 insertions(+), 9 deletions(-) -- 2.29.2
