| Message ID | 20240822224547.385095-1-ulf.hansson@linaro.org |
|---|---|
| Headers | show |
| Series | OPP/pmdomain: Assign required_devs for required OPPs through genpd | expand |
On 23-08-24, 00:45, Ulf Hansson wrote: > Changes in v3: > - Combine the two series [1] and [2] into one. > - A few minor changes to consumer drivers. > - Clarification in commit messages. > > Through dev_pm_opp_set_config() the _opp_attach_genpd() allows consumer > drivers to attach a device to its PM domains. Their corresponding virtual > devices that are created by genpd during attach, are later being assigned > as the required_devs for the corresponding required OPPs. In principle, > using dev_pm_opp_set_config() for this works fine. > > However, attaching a device to its PM domains is in general better done > with dev_pm_domain_attach|detach_list(). To avoid having two different ways > to manage this, this series prepare for the removal of _opp_attach_genpd(). > > Moreover, it converts the few existing users of the _opp_attach_genpd() into > dev|devm__pm_domain_attach(), allowing the final patch to drop the redundant > code that becomes redundant. > > To test this, I have used a QEMU setup, with local PM test-drivers to try to > test all various combinations of single/multi power/performance PM domains for > a device. Hopefully I have covered it all, but I would certainly appreciate if > someone could help to run a slew of tests on some HWs. > > Note, due to dependencies I think this whole series is best funneled together > through my pmdomain tree. If you think there may be issues with this approach, > please let me know so we can figure out the best merging strategy. > > Kind regards > Ulf Hansson > > [1] > https://lore.kernel.org/all/20240718234319.356451-1-ulf.hansson@linaro.org/ > [2] > https://lore.kernel.org/all/20240723144610.564273-1-ulf.hansson@linaro.org/ > > > Ulf Hansson (10): > OPP: Fix support for required OPPs for multiple PM domains > OPP: Rework _set_required_devs() to manage a single device per call > pmdomain: core: Manage the default required OPP from a separate > function > OPP/pmdomain: Set the required_dev for a required OPP during genpd > attach > pmdomain: core: Drop the redundant dev_to_genpd_dev() > OPP: Drop redundant code in _link_required_opps() > drm/tegra: gr3d: Convert into devm_pm_domain_attach_list() > media: venus: Convert into devm_pm_domain_attach_list() for OPP PM > domain > cpufreq: qcom-nvmem: Convert to dev_pm_domain_attach|detach_list() > OPP: Drop redundant _opp_attach|detach_genpd() Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
On Fri, 23 Aug 2024 at 00:46, Ulf Hansson <ulf.hansson@linaro.org> wrote: > > Changes in v3: > - Combine the two series [1] and [2] into one. > - A few minor changes to consumer drivers. > - Clarification in commit messages. > > Through dev_pm_opp_set_config() the _opp_attach_genpd() allows consumer > drivers to attach a device to its PM domains. Their corresponding virtual > devices that are created by genpd during attach, are later being assigned > as the required_devs for the corresponding required OPPs. In principle, > using dev_pm_opp_set_config() for this works fine. > > However, attaching a device to its PM domains is in general better done > with dev_pm_domain_attach|detach_list(). To avoid having two different ways > to manage this, this series prepare for the removal of _opp_attach_genpd(). > > Moreover, it converts the few existing users of the _opp_attach_genpd() into > dev|devm__pm_domain_attach(), allowing the final patch to drop the redundant > code that becomes redundant. > > To test this, I have used a QEMU setup, with local PM test-drivers to try to > test all various combinations of single/multi power/performance PM domains for > a device. Hopefully I have covered it all, but I would certainly appreciate if > someone could help to run a slew of tests on some HWs. > > Note, due to dependencies I think this whole series is best funneled together > through my pmdomain tree. If you think there may be issues with this approach, > please let me know so we can figure out the best merging strategy. > > Kind regards > Ulf Hansson FYI This series has been cooking in linux-next via my pmdomain tree for a while - and lately we have received some bug reports. Rather than rushing to fix the issues on top, because the merge window is getting closer, I decided that it was better to drop the whole series from my next branch for now. I will continue to work on a new version of the series and post it as soon as I can.. [...] Kind regards Uffe
Changes in v3: - Combine the two series [1] and [2] into one. - A few minor changes to consumer drivers. - Clarification in commit messages. Through dev_pm_opp_set_config() the _opp_attach_genpd() allows consumer drivers to attach a device to its PM domains. Their corresponding virtual devices that are created by genpd during attach, are later being assigned as the required_devs for the corresponding required OPPs. In principle, using dev_pm_opp_set_config() for this works fine. However, attaching a device to its PM domains is in general better done with dev_pm_domain_attach|detach_list(). To avoid having two different ways to manage this, this series prepare for the removal of _opp_attach_genpd(). Moreover, it converts the few existing users of the _opp_attach_genpd() into dev|devm__pm_domain_attach(), allowing the final patch to drop the redundant code that becomes redundant. To test this, I have used a QEMU setup, with local PM test-drivers to try to test all various combinations of single/multi power/performance PM domains for a device. Hopefully I have covered it all, but I would certainly appreciate if someone could help to run a slew of tests on some HWs. Note, due to dependencies I think this whole series is best funneled together through my pmdomain tree. If you think there may be issues with this approach, please let me know so we can figure out the best merging strategy. Kind regards Ulf Hansson [1] https://lore.kernel.org/all/20240718234319.356451-1-ulf.hansson@linaro.org/ [2] https://lore.kernel.org/all/20240723144610.564273-1-ulf.hansson@linaro.org/ Ulf Hansson (10): OPP: Fix support for required OPPs for multiple PM domains OPP: Rework _set_required_devs() to manage a single device per call pmdomain: core: Manage the default required OPP from a separate function OPP/pmdomain: Set the required_dev for a required OPP during genpd attach pmdomain: core: Drop the redundant dev_to_genpd_dev() OPP: Drop redundant code in _link_required_opps() drm/tegra: gr3d: Convert into devm_pm_domain_attach_list() media: venus: Convert into devm_pm_domain_attach_list() for OPP PM domain cpufreq: qcom-nvmem: Convert to dev_pm_domain_attach|detach_list() OPP: Drop redundant _opp_attach|detach_genpd() drivers/cpufreq/qcom-cpufreq-nvmem.c | 79 ++---- drivers/gpu/drm/tegra/gr3d.c | 38 +-- drivers/media/platform/qcom/venus/core.c | 8 +- drivers/media/platform/qcom/venus/core.h | 6 +- .../media/platform/qcom/venus/pm_helpers.c | 44 +-- drivers/opp/core.c | 252 ++++++------------ drivers/opp/of.c | 39 +-- drivers/opp/opp.h | 5 +- drivers/pmdomain/core.c | 107 ++++++-- include/linux/pm_domain.h | 6 - include/linux/pm_opp.h | 42 +-- 11 files changed, 217 insertions(+), 409 deletions(-)