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2017-12-28PM / OPP: Make local function ti_opp_supply_set_opp() staticWei Yongjun1-1/+1
Fixes the following sparse warning: drivers/opp/ti-opp-supply.c:276:5: warning: symbol 'ti_opp_supply_set_opp' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-12-17PM / OPP: Add ti-opp-supply driverDave Gerlach2-0/+426
Introduce a ti-opp-supply driver that will use new multiple regulator support that is part of the OPP core This is needed on TI platforms like DRA7/AM57 in order to control both CPU regulator and Adaptive Body Bias (ABB) regulator. These regulators must be scaled in sequence during an OPP transition depending on whether or not the frequency is being scaled up or down. This driver also implements AVS Class0 for these parts by looking up the required values from registers in the SoC and programming adjusted optimal voltage values for each OPP. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-14PM / OPP: Add dev_pm_opp_{un}register_get_pstate_helper()Viresh Kumar2-0/+80
This adds the dev_pm_opp_{un}register_get_pstate_helper() helper routines which will be used to set the get_pstate() callback for a device. This callback will be later called internally by the OPP core to get performance state corresponding to an OPP. This is required temporarily until the time we have proper DT bindings to include the performance state information. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-14PM / OPP: Support updating performance state of device's power domainViresh Kumar3-1/+63
The genpd framework now provides an API to request device's power domain to update its performance state. Use that interface from the OPP core for devices whose power domains support performance states. Note that this commit doesn't add any mechanism by which performance states are made available to the OPP core. That would be done by a later commit. Note that the current implementation is restricted to the case where the device doesn't have separate regulators for itself. We shouldn't over engineer the code before we have real use case for them. We can always come back and add more code to support such cases later on. Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-14PM / OPP: add missing of_node_put() for of_get_cpu_node()Sudeep Holla1-2/+3
Commit 762792913f8c (PM / OPP: Fix get sharing CPUs when hotplug is used) moved away from using cpu_dev->of_node because of some limitations. However, commit 7467c9d95989 (of: return of_get_cpu_node from of_cpu_device_node_get if CPUs are not registered) added support to fall back to of_get_cpu_node() if called if CPUs are not registered yet. Add the missing of_node_put() for the CPU device nodes. Also go back to using of_cpu_device_node_get() in dev_pm_opp_of_get_sharing_cpus() to avoid scanning the device tree again. Acked-by: Viresh Kumar <vireshk@kernel.org> Fixes: 762792913f8c (PM / OPP: Fix get sharing CPUs when hotplug is used) Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-11PM / OPP: Rename dev_pm_opp_register_put_opp_helper()Viresh Kumar1-3/+3
The routine is named incorrectly since the first attempt as there is nothing like a put_opp() helper. We wanted to unregister the set_opp() helper here and so it should rather be named as dev_pm_opp_unregister_set_opp_helper(). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-11PM / OPP: Add missing of_node_put(np)Tobias Jordan1-0/+1
The for_each_available_child_of_node() loop in _of_add_opp_table_v2() doesn't drop the reference to "np" on errors. Fix that. Fixes: 274659029c9d (PM / OPP: Add support to parse "operating-points-v2" bindings) Cc: 4.3+ <stable@vger.kernel.org> # 4.3+ Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com> [ VK: Improved commit log. ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-11PM / OPP: Move error message to debug levelFabio Estevam1-1/+1
On some i.MX6 platforms which do not have speed grading check, opp table will not be created in platform code, so cpufreq driver prints the following error message: cpu cpu0: dev_pm_opp_get_opp_count: OPP table not found (-19) However, this is not really an error in this case because the imx6q-cpufreq driver first calls dev_pm_opp_get_opp_count() and if it fails, it means that platform code does not provide OPP and then dev_pm_opp_of_add_table() will be called. In order to avoid such confusing error message, move it to debug level. It is up to the caller of dev_pm_opp_get_opp_count() to check its return value and decide if it will print an error or not. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-11PM / OPP: Use snprintf() to avoid kasprintf() and kfree()Arvind Yadav1-4/+3
Use snprintf() to avoid unnecessary initializations, avoid calling kfree(). Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-10-03PM / OPP: Move the OPP directory out of power/Viresh Kumar7-0/+3104
The drivers/base/power/ directory is special and contains code related to power management core like system suspend/resume, hibernation, etc. It was fine to keep the OPP code inside it when we had just one file for it, but it is growing now and already has a directory for itself. Lets move it directly under drivers/ directory, just like cpufreq and cpuidle. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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