From: Viresh Kumar Subject: [PATCH V4 0/7] PM / Domains: Allow performance state propagation Date: Fri, 14 Dec 2018 15:45:26 +0530 Message-ID: Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: ulf.hansson@linaro.org, Rafael Wysocki , Kevin Hilman , Len Brown , Nishanth Menon , Pavel Machek , Stephen Boyd , Viresh Kumar Cc: Viresh Kumar , linux-pm@vger.kernel.org, Vincent Guittot , rnayak@codeaurora.org, niklas.cassel@linaro.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org Hi, This series adds performance state propagation support in genpd core. The propagation happens from the sub-domains to their masters. More details can be found in the individual commit logs. This is tested on hikey960 by faking power domains in such a way that the CPU devices have two power domains and both of them have the same master domain. The CPU device, as well as its power domains have "required-opps" property set and the performance requirement from the CPU eventually configures all the domains (2 sub-domains and 1 master). Based on opp/linux-next branch (which is 4.20-rc1 + multiple-power-domain-support-in-opp-core + some OPP fixes). Rajendra has already tested the previous version of this series and so I have included his Tested-by for all patches. V3->V4: - dev_pm_opp_xlate_performance_state() returns negative values on error now. - of_get_required_opp_performance_state() is also updated to do the same. - _genpd_set_performance_state() is not called anymore from _genpd_reeval_performance_state() and we get rid of the extra declaration. - Improved commit log in the last patch. - dropped an unlikely. V2->V3: - Include Ulf's patch (sent separately earlier) with this series. - The performance state update code doesn't rely anymore on the power on/off state of the genpd, it sets and propagates rate in all cases. - That simplified a lot of code from V2 in _genpd_power_on(). - commit logs improved for few commits. - s/mstate/master_state/ - and few more minor changes. v1->V2: - First patch (1/5) is new and an improvement to earlier stuff. - Move genpd_status_on() check to _genpd_reeval_performance_state() from _genpd_set_performance_state(). - Improve dev_pm_opp_xlate_performance_state() to handle 1:1 pstate mapping between genpd and its master and also to fix a problem while finding the dst_table. - Handle pstate=0 case properly. -- viresh Ulf Hansson (1): PM / Domains: Make genpd performance states orthogonal to the idlestates Viresh Kumar (6): OPP: Improve _find_table_of_opp_np() OPP: Add dev_pm_opp_xlate_performance_state() helper OPP: Don't return 0 on error from of_get_required_opp_performance_state() PM / Domains: Save OPP table pointer in genpd PM / Domains: Factorize dev_pm_genpd_set_performance_state() PM / Domains: Propagate performance state updates drivers/base/power/domain.c | 202 ++++++++++++++++++++++++++---------- drivers/opp/core.c | 63 +++++++++++ drivers/opp/of.c | 24 +++-- include/linux/pm_domain.h | 6 ++ include/linux/pm_opp.h | 13 ++- 5 files changed, 242 insertions(+), 66 deletions(-) -- 2.19.1.568.g152ad8e3369a