diff options
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r-- | drivers/cpufreq/Kconfig.powerpc | 8 | ||||
-rw-r--r-- | drivers/cpufreq/Kconfig.x86 | 16 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq-dt-platdev.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_conservative.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_ondemand.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_performance.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_powersave.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq_userspace.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/qcom-cpufreq-hw.c | 2 | ||||
-rw-r--r-- | drivers/cpufreq/tegra124-cpufreq.c | 59 | ||||
-rw-r--r-- | drivers/cpufreq/vexpress-spc-cpufreq.c | 2 |
11 files changed, 79 insertions, 20 deletions
diff --git a/drivers/cpufreq/Kconfig.powerpc b/drivers/cpufreq/Kconfig.powerpc index 35b4f700f054..58151ca56695 100644 --- a/drivers/cpufreq/Kconfig.powerpc +++ b/drivers/cpufreq/Kconfig.powerpc @@ -48,9 +48,9 @@ config PPC_PASEMI_CPUFREQ PWRficient processors. config POWERNV_CPUFREQ - tristate "CPU frequency scaling for IBM POWERNV platform" - depends on PPC_POWERNV - default y - help + tristate "CPU frequency scaling for IBM POWERNV platform" + depends on PPC_POWERNV + default y + help This adds support for CPU frequency switching on IBM POWERNV platform diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 index dfa6457deaf6..a6528388952e 100644 --- a/drivers/cpufreq/Kconfig.x86 +++ b/drivers/cpufreq/Kconfig.x86 @@ -4,17 +4,17 @@ # config X86_INTEL_PSTATE - bool "Intel P state control" - depends on X86 - select ACPI_PROCESSOR if ACPI - select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO - help - This driver provides a P state for Intel core processors. + bool "Intel P state control" + depends on X86 + select ACPI_PROCESSOR if ACPI + select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO + help + This driver provides a P state for Intel core processors. The driver implements an internal governor and will become - the scaling driver and governor for Sandy bridge processors. + the scaling driver and governor for Sandy bridge processors. When this driver is enabled it will become the preferred - scaling driver for Sandy bridge processors. + scaling driver for Sandy bridge processors. If in doubt, say N. diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c index 54bc76743b1f..f1d170dcf4d3 100644 --- a/drivers/cpufreq/cpufreq-dt-platdev.c +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -180,4 +180,4 @@ create_pdev: -1, data, sizeof(struct cpufreq_dt_platform_data))); } -device_initcall(cpufreq_dt_platdev_init); +core_initcall(cpufreq_dt_platdev_init); diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index b66e81c06a57..737ff3b9c2c0 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -346,7 +346,7 @@ struct cpufreq_governor *cpufreq_default_governor(void) return CPU_FREQ_GOV_CONSERVATIVE; } -fs_initcall(cpufreq_gov_dbs_init); +core_initcall(cpufreq_gov_dbs_init); #else module_init(cpufreq_gov_dbs_init); #endif diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index dced033875bf..82a4d37ddecb 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -483,7 +483,7 @@ struct cpufreq_governor *cpufreq_default_governor(void) return CPU_FREQ_GOV_ONDEMAND; } -fs_initcall(cpufreq_gov_dbs_init); +core_initcall(cpufreq_gov_dbs_init); #else module_init(cpufreq_gov_dbs_init); #endif diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c index aaa04dfcacd9..def9afe0f5b8 100644 --- a/drivers/cpufreq/cpufreq_performance.c +++ b/drivers/cpufreq/cpufreq_performance.c @@ -50,5 +50,5 @@ MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); MODULE_DESCRIPTION("CPUfreq policy governor 'performance'"); MODULE_LICENSE("GPL"); -fs_initcall(cpufreq_gov_performance_init); +core_initcall(cpufreq_gov_performance_init); module_exit(cpufreq_gov_performance_exit); diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index c143dc237d87..1ae66019eb83 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -43,7 +43,7 @@ struct cpufreq_governor *cpufreq_default_governor(void) return &cpufreq_gov_powersave; } -fs_initcall(cpufreq_gov_powersave_init); +core_initcall(cpufreq_gov_powersave_init); #else module_init(cpufreq_gov_powersave_init); #endif diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c index cbd81c58cb8f..b43e7cd502c5 100644 --- a/drivers/cpufreq/cpufreq_userspace.c +++ b/drivers/cpufreq/cpufreq_userspace.c @@ -147,7 +147,7 @@ struct cpufreq_governor *cpufreq_default_governor(void) return &cpufreq_gov_userspace; } -fs_initcall(cpufreq_gov_userspace_init); +core_initcall(cpufreq_gov_userspace_init); #else module_init(cpufreq_gov_userspace_init); #endif diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index a9ae2f84a4ef..fc92a8842e25 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -334,7 +334,7 @@ static int __init qcom_cpufreq_hw_init(void) { return platform_driver_register(&qcom_cpufreq_hw_driver); } -device_initcall(qcom_cpufreq_hw_init); +postcore_initcall(qcom_cpufreq_hw_init); static void __exit qcom_cpufreq_hw_exit(void) { diff --git a/drivers/cpufreq/tegra124-cpufreq.c b/drivers/cpufreq/tegra124-cpufreq.c index 4f0c637b3b49..7a1ea6fdcab6 100644 --- a/drivers/cpufreq/tegra124-cpufreq.c +++ b/drivers/cpufreq/tegra124-cpufreq.c @@ -6,6 +6,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/clk.h> +#include <linux/cpufreq.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> @@ -128,8 +129,66 @@ out_put_np: return ret; } +static int __maybe_unused tegra124_cpufreq_suspend(struct device *dev) +{ + struct tegra124_cpufreq_priv *priv = dev_get_drvdata(dev); + int err; + + /* + * PLLP rate 408Mhz is below the CPU Fmax at Vmin and is safe to + * use during suspend and resume. So, switch the CPU clock source + * to PLLP and disable DFLL. + */ + err = clk_set_parent(priv->cpu_clk, priv->pllp_clk); + if (err < 0) { + dev_err(dev, "failed to reparent to PLLP: %d\n", err); + return err; + } + + clk_disable_unprepare(priv->dfll_clk); + + return 0; +} + +static int __maybe_unused tegra124_cpufreq_resume(struct device *dev) +{ + struct tegra124_cpufreq_priv *priv = dev_get_drvdata(dev); + int err; + + /* + * Warmboot code powers up the CPU with PLLP clock source. + * Enable DFLL clock and switch CPU clock source back to DFLL. + */ + err = clk_prepare_enable(priv->dfll_clk); + if (err < 0) { + dev_err(dev, "failed to enable DFLL clock for CPU: %d\n", err); + goto disable_cpufreq; + } + + err = clk_set_parent(priv->cpu_clk, priv->dfll_clk); + if (err < 0) { + dev_err(dev, "failed to reparent to DFLL clock: %d\n", err); + goto disable_dfll; + } + + return 0; + +disable_dfll: + clk_disable_unprepare(priv->dfll_clk); +disable_cpufreq: + disable_cpufreq(); + + return err; +} + +static const struct dev_pm_ops tegra124_cpufreq_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(tegra124_cpufreq_suspend, + tegra124_cpufreq_resume) +}; + static struct platform_driver tegra124_cpufreq_platdrv = { .driver.name = "cpufreq-tegra124", + .driver.pm = &tegra124_cpufreq_pm_ops, .probe = tegra124_cpufreq_probe, }; diff --git a/drivers/cpufreq/vexpress-spc-cpufreq.c b/drivers/cpufreq/vexpress-spc-cpufreq.c index 506e3f2bf53a..83c85d3d67e3 100644 --- a/drivers/cpufreq/vexpress-spc-cpufreq.c +++ b/drivers/cpufreq/vexpress-spc-cpufreq.c @@ -434,7 +434,7 @@ static int ve_spc_cpufreq_init(struct cpufreq_policy *policy) if (cur_cluster < MAX_CLUSTERS) { int cpu; - cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu)); + dev_pm_opp_get_sharing_cpus(cpu_dev, policy->cpus); for_each_cpu(cpu, policy->cpus) per_cpu(physical_cluster, cpu) = cur_cluster; |