From: Ulf Hansson <ulf.hansson@linaro.org> To: Sudeep Holla <sudeep.holla@arm.com>, Cristian Marussi <cristian.marussi@arm.com>, Viresh Kumar <vireshk@kernel.org>, "Rafael J . Wysocki" <rafael@kernel.org> Cc: Nishanth Menon <nm@ti.com>, Stephen Boyd <sboyd@kernel.org>, Nikunj Kela <nkela@quicinc.com>, Prasad Sodagudi <psodagud@quicinc.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Ulf Hansson <ulf.hansson@linaro.org>, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/9] OPP: Extend support for the opp-level beyond required-opps Date: Mon, 25 Sep 2023 15:17:12 +0200 [thread overview] Message-ID: <20230925131715.138411-7-ulf.hansson@linaro.org> (raw) In-Reply-To: <20230925131715.138411-1-ulf.hansson@linaro.org> At this point the level (performance state) for an OPP is currently limited to be requested for a device that is attached to a PM domain. Moreover, the device needs to have the so called required-opps assigned to it, which are based upon OPP tables being described in DT. To extend the support beyond required-opps and DT, let's enable the level to be set for all OPPs. More precisely, if the requested OPP has a valid level let's try to request it through the device's optional PM domain, via calling dev_pm_domain_set_performance_state(). Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- drivers/opp/core.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 60dca60ac4af..afb73978cdcb 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1107,6 +1107,22 @@ void _update_set_required_opps(struct opp_table *opp_table) opp_table->set_required_opps = _opp_set_required_opps_generic; } +static int _set_opp_level(struct device *dev, struct opp_table *opp_table, + struct dev_pm_opp *opp) +{ + int ret = 0; + + /* Request a new performance state through the device's PM domain. */ + if (opp && opp->level) { + ret = dev_pm_domain_set_performance_state(dev, opp->level); + if (ret) + dev_err(dev, "Failed to set performance state %u (%d)\n", + opp->level, ret); + } + + return ret; +} + static void _find_current_opp(struct device *dev, struct opp_table *opp_table) { struct dev_pm_opp *opp = ERR_PTR(-ENODEV); @@ -1154,8 +1170,13 @@ static int _disable_opp_table(struct device *dev, struct opp_table *opp_table) if (opp_table->regulators) regulator_disable(opp_table->regulators[0]); + ret = _set_opp_level(dev, opp_table, NULL); + if (ret) + goto out; + ret = _set_required_opps(dev, opp_table, NULL, false); +out: opp_table->enabled = false; return ret; } @@ -1198,6 +1219,10 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + ret = _set_opp_level(dev, opp_table, opp); + if (ret) + return ret; + ret = _set_opp_bw(opp_table, opp, dev); if (ret) { dev_err(dev, "Failed to set bw: %d\n", ret); @@ -1241,6 +1266,10 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + ret = _set_opp_level(dev, opp_table, opp); + if (ret) + return ret; + ret = _set_required_opps(dev, opp_table, opp, false); if (ret) { dev_err(dev, "Failed to set required opps: %d\n", ret); -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Ulf Hansson <ulf.hansson@linaro.org> To: Sudeep Holla <sudeep.holla@arm.com>, Cristian Marussi <cristian.marussi@arm.com>, Viresh Kumar <vireshk@kernel.org>, "Rafael J . Wysocki" <rafael@kernel.org> Cc: Nishanth Menon <nm@ti.com>, Stephen Boyd <sboyd@kernel.org>, Nikunj Kela <nkela@quicinc.com>, Prasad Sodagudi <psodagud@quicinc.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, Ulf Hansson <ulf.hansson@linaro.org>, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/9] OPP: Extend support for the opp-level beyond required-opps Date: Mon, 25 Sep 2023 15:17:12 +0200 [thread overview] Message-ID: <20230925131715.138411-7-ulf.hansson@linaro.org> (raw) In-Reply-To: <20230925131715.138411-1-ulf.hansson@linaro.org> At this point the level (performance state) for an OPP is currently limited to be requested for a device that is attached to a PM domain. Moreover, the device needs to have the so called required-opps assigned to it, which are based upon OPP tables being described in DT. To extend the support beyond required-opps and DT, let's enable the level to be set for all OPPs. More precisely, if the requested OPP has a valid level let's try to request it through the device's optional PM domain, via calling dev_pm_domain_set_performance_state(). Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- drivers/opp/core.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 60dca60ac4af..afb73978cdcb 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1107,6 +1107,22 @@ void _update_set_required_opps(struct opp_table *opp_table) opp_table->set_required_opps = _opp_set_required_opps_generic; } +static int _set_opp_level(struct device *dev, struct opp_table *opp_table, + struct dev_pm_opp *opp) +{ + int ret = 0; + + /* Request a new performance state through the device's PM domain. */ + if (opp && opp->level) { + ret = dev_pm_domain_set_performance_state(dev, opp->level); + if (ret) + dev_err(dev, "Failed to set performance state %u (%d)\n", + opp->level, ret); + } + + return ret; +} + static void _find_current_opp(struct device *dev, struct opp_table *opp_table) { struct dev_pm_opp *opp = ERR_PTR(-ENODEV); @@ -1154,8 +1170,13 @@ static int _disable_opp_table(struct device *dev, struct opp_table *opp_table) if (opp_table->regulators) regulator_disable(opp_table->regulators[0]); + ret = _set_opp_level(dev, opp_table, NULL); + if (ret) + goto out; + ret = _set_required_opps(dev, opp_table, NULL, false); +out: opp_table->enabled = false; return ret; } @@ -1198,6 +1219,10 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + ret = _set_opp_level(dev, opp_table, opp); + if (ret) + return ret; + ret = _set_opp_bw(opp_table, opp, dev); if (ret) { dev_err(dev, "Failed to set bw: %d\n", ret); @@ -1241,6 +1266,10 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, return ret; } + ret = _set_opp_level(dev, opp_table, opp); + if (ret) + return ret; + ret = _set_required_opps(dev, opp_table, opp, false); if (ret) { dev_err(dev, "Failed to set required opps: %d\n", ret); -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-09-25 13:18 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-09-25 13:17 [PATCH 0/9] PM: domains/opp/arm_scmi: Extend performance scaling support Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 1/9] PM: domains: Introduce dev_pm_domain_set_performance_state() Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 2/9] PM: domains: Implement the ->set_performance_state() callback for genpd Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 3/9] OPP: Add dev_pm_opp_add_dynamic() to allow more flexibility Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 4/9] OPP: Extend dev_pm_opp_data with a level Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 5/9] OPP: Switch to use dev_pm_domain_set_performance_state() Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson [this message] 2023-09-25 13:17 ` [PATCH 6/9] OPP: Extend support for the opp-level beyond required-opps Ulf Hansson 2023-09-25 13:33 ` Ulf Hansson 2023-09-25 13:33 ` Ulf Hansson 2023-10-03 8:23 ` Viresh Kumar 2023-10-03 8:23 ` Viresh Kumar 2023-10-03 12:36 ` Ulf Hansson 2023-10-03 12:36 ` Ulf Hansson 2023-10-04 5:04 ` Viresh Kumar 2023-10-04 5:04 ` Viresh Kumar 2023-10-04 9:06 ` Ulf Hansson 2023-10-04 9:06 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 7/9] firmware: arm_scmi: Simplify error path in scmi_dvfs_device_opps_add() Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 8/9] firmware: arm_scmi: Specify the performance level when adding an OPP Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-25 13:17 ` [PATCH 9/9] firmware: arm_scmi: Add generic OPP support to the SCMI performance domain Ulf Hansson 2023-09-25 13:17 ` Ulf Hansson 2023-09-29 16:25 ` Sudeep Holla 2023-09-29 16:25 ` Sudeep Holla 2023-10-03 8:21 ` Viresh Kumar 2023-10-03 8:21 ` Viresh Kumar 2023-10-03 11:26 ` Sudeep Holla 2023-10-03 11:26 ` Sudeep Holla 2023-10-04 5:08 ` Viresh Kumar 2023-10-04 5:08 ` Viresh Kumar 2023-10-05 15:06 ` Sudeep Holla 2023-10-05 15:06 ` Sudeep Holla 2023-10-06 7:09 ` Viresh Kumar 2023-10-06 7:09 ` Viresh Kumar 2023-10-06 9:43 ` Sudeep Holla 2023-10-06 9:43 ` Sudeep Holla 2023-09-26 16:54 ` [PATCH 0/9] PM: domains/opp/arm_scmi: Extend performance scaling support Rafael J. Wysocki 2023-09-26 16:54 ` Rafael J. Wysocki 2023-10-06 14:30 ` (subset) " Sudeep Holla 2023-10-06 14:30 ` Sudeep Holla
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