diff options
Diffstat (limited to 'drivers/cpufreq')
50 files changed, 324 insertions, 282 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index f8129edc145e..56c31a78c692 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -93,6 +93,15 @@ config ARM_IMX6Q_CPUFREQ If in doubt, say N. +config ARM_IMX_CPUFREQ_DT + tristate "Freescale i.MX8M cpufreq support" + depends on ARCH_MXC && CPUFREQ_DT + help + This adds cpufreq driver support for Freescale i.MX8M series SoCs, + based on cpufreq-dt. + + If in doubt, say N. + config ARM_KIRKWOOD_CPUFREQ def_bool MACH_KIRKWOOD help @@ -133,6 +142,14 @@ config ARM_QCOM_CPUFREQ_HW The driver implements the cpufreq interface for this HW engine. Say Y if you want to support CPUFreq HW. +config ARM_RASPBERRYPI_CPUFREQ + tristate "Raspberry Pi cpufreq support" + depends on CLK_RASPBERRYPI || COMPILE_TEST + help + This adds the CPUFreq driver for Raspberry Pi + + If in doubt, say N. + config ARM_S3C_CPUFREQ bool help diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index 689b26c6f949..5a6c70d26c98 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -56,6 +56,7 @@ obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o obj-$(CONFIG_ARCH_DAVINCI) += davinci-cpufreq.o obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ) += highbank-cpufreq.o obj-$(CONFIG_ARM_IMX6Q_CPUFREQ) += imx6q-cpufreq.o +obj-$(CONFIG_ARM_IMX_CPUFREQ_DT) += imx-cpufreq-dt.o obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += kirkwood-cpufreq.o obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ) += mediatek-cpufreq.o obj-$(CONFIG_MACH_MVEBU_V7) += mvebu-cpufreq.o @@ -64,6 +65,7 @@ obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o obj-$(CONFIG_ARM_QCOM_CPUFREQ_HW) += qcom-cpufreq-hw.o obj-$(CONFIG_ARM_QCOM_CPUFREQ_KRYO) += qcom-cpufreq-kryo.o +obj-$(CONFIG_ARM_RASPBERRYPI_CPUFREQ) += raspberrypi-cpufreq.o obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o obj-$(CONFIG_ARM_S3C2412_CPUFREQ) += s3c2412-cpufreq.o obj-$(CONFIG_ARM_S3C2416_CPUFREQ) += s3c2416-cpufreq.o diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c index 6927a8c0e748..e2df9d112106 100644 --- a/drivers/cpufreq/amd_freq_sensitivity.c +++ b/drivers/cpufreq/amd_freq_sensitivity.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * amd_freq_sensitivity.c: AMD frequency sensitivity feedback powersave bias * for the ondemand governor. @@ -5,10 +6,6 @@ * Copyright (C) 2013 Advanced Micro Devices, Inc. * * Author: Jacob Shin <jacob.shin@amd.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/drivers/cpufreq/armada-37xx-cpufreq.c b/drivers/cpufreq/armada-37xx-cpufreq.c index 0df16eb1eb3c..aa0f06dec959 100644 --- a/drivers/cpufreq/armada-37xx-cpufreq.c +++ b/drivers/cpufreq/armada-37xx-cpufreq.c @@ -257,7 +257,7 @@ static void __init armada37xx_cpufreq_avs_configure(struct regmap *base, static void __init armada37xx_cpufreq_avs_setup(struct regmap *base, struct armada_37xx_dvfs *dvfs) { - unsigned int avs_val = 0, freq; + unsigned int avs_val = 0; int load_level = 0; if (base == NULL) @@ -275,8 +275,6 @@ static void __init armada37xx_cpufreq_avs_setup(struct regmap *base, for (load_level = 1; load_level < LOAD_LEVEL_NR; load_level++) { - freq = dvfs->cpu_freq_max / dvfs->divider[load_level]; - avs_val = dvfs->avs[load_level]; regmap_update_bits(base, ARMADA_37XX_AVS_VSET(load_level-1), ARMADA_37XX_AVS_VDD_MASK << ARMADA_37XX_AVS_HIGH_VDD_LIMIT | diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c index e6f9cbe5835f..77b0e5d0fb13 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -384,12 +384,12 @@ static int brcm_avs_set_pstate(struct private_data *priv, unsigned int pstate) return __issue_avs_command(priv, AVS_CMD_SET_PSTATE, true, args); } -static unsigned long brcm_avs_get_voltage(void __iomem *base) +static u32 brcm_avs_get_voltage(void __iomem *base) { return readl(base + AVS_MBOX_VOLTAGE1); } -static unsigned long brcm_avs_get_frequency(void __iomem *base) +static u32 brcm_avs_get_frequency(void __iomem *base) { return readl(base + AVS_MBOX_FREQUENCY) * 1000; /* in kHz */ } @@ -446,8 +446,8 @@ static bool brcm_avs_is_firmware_loaded(struct private_data *priv) rc = brcm_avs_get_pmap(priv, NULL); magic = readl(priv->base + AVS_MBOX_MAGIC); - return (magic == AVS_FIRMWARE_MAGIC) && (rc != -ENOTSUPP) && - (rc != -EINVAL); + return (magic == AVS_FIRMWARE_MAGIC) && ((rc != -ENOTSUPP) || + (rc != -EINVAL)); } static unsigned int brcm_avs_cpufreq_get(unsigned int cpu) @@ -653,14 +653,14 @@ static ssize_t show_brcm_avs_voltage(struct cpufreq_policy *policy, char *buf) { struct private_data *priv = policy->driver_data; - return sprintf(buf, "0x%08lx\n", brcm_avs_get_voltage(priv->base)); + return sprintf(buf, "0x%08x\n", brcm_avs_get_voltage(priv->base)); } static ssize_t show_brcm_avs_frequency(struct cpufreq_policy *policy, char *buf) { struct private_data *priv = policy->driver_data; - return sprintf(buf, "0x%08lx\n", brcm_avs_get_frequency(priv->base)); + return sprintf(buf, "0x%08x\n", brcm_avs_get_frequency(priv->base)); } cpufreq_freq_attr_ro(brcm_avs_pstate); diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c index 2ae978d27e61..8d8da763adc5 100644 --- a/drivers/cpufreq/cppc_cpufreq.c +++ b/drivers/cpufreq/cppc_cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * CPPC (Collaborative Processor Performance Control) driver for * interfacing with the CPUfreq layer and governors. See @@ -5,11 +6,6 @@ * * (C) Copyright 2014, 2015 Linaro Ltd. * Author: Ashwin Chaugule <ashwin.chaugule@linaro.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. */ #define pr_fmt(fmt) "CPPC Cpufreq:" fmt diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c index 47729a22c159..03dc4244ab00 100644 --- a/drivers/cpufreq/cpufreq-dt-platdev.c +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2016 Linaro. * Viresh Kumar <viresh.kumar@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/err.h> @@ -40,7 +37,6 @@ static const struct of_device_id whitelist[] __initconst = { { .compatible = "fsl,imx27", }, { .compatible = "fsl,imx51", }, { .compatible = "fsl,imx53", }, - { .compatible = "fsl,imx7d", }, { .compatible = "marvell,berlin", }, { .compatible = "marvell,pxa250", }, @@ -108,6 +104,10 @@ static const struct of_device_id blacklist[] __initconst = { { .compatible = "calxeda,highbank", }, { .compatible = "calxeda,ecx-2000", }, + { .compatible = "fsl,imx7d", }, + { .compatible = "fsl,imx8mq", }, + { .compatible = "fsl,imx8mm", }, + { .compatible = "marvell,armadaxp", }, { .compatible = "mediatek,mt2701", }, diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index bde28878725b..d2b5f062a07b 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Freescale Semiconductor, Inc. * * Copyright (C) 2014 Linaro. * Viresh Kumar <viresh.kumar@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/cpufreq-dt.h b/drivers/cpufreq/cpufreq-dt.h index d5aeea13433e..a5a45b547d0b 100644 --- a/drivers/cpufreq/cpufreq-dt.h +++ b/drivers/cpufreq/cpufreq-dt.h @@ -1,10 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2016 Linaro * Viresh Kumar <viresh.kumar@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef __CPUFREQ_DT_H__ diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 85ff958e01f1..0a9f675f2af4 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/cpufreq/cpufreq.c * @@ -9,10 +10,6 @@ * Added handling for CPU hotplug * Feb 2006 - Jacob Shin <jacob.shin@amd.com> * Fix handling for CPU hotplug -- affected CPUs - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -359,12 +356,10 @@ static void cpufreq_notify_transition(struct cpufreq_policy *policy, * which is not equal to what the cpufreq core thinks is * "old frequency". */ - if (!(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) { - if (policy->cur && (policy->cur != freqs->old)) { - pr_debug("Warning: CPU frequency is %u, cpufreq assumed %u kHz\n", - freqs->old, policy->cur); - freqs->old = policy->cur; - } + if (policy->cur && policy->cur != freqs->old) { + pr_debug("Warning: CPU frequency is %u, cpufreq assumed %u kHz\n", + freqs->old, policy->cur); + freqs->old = policy->cur; } srcu_notifier_call_chain(&cpufreq_transition_notifier_list, @@ -634,7 +629,7 @@ static int cpufreq_parse_policy(char *str_governor, } /** - * cpufreq_parse_governor - parse a governor string only for !setpolicy + * cpufreq_parse_governor - parse a governor string only for has_target() */ static int cpufreq_parse_governor(char *str_governor, struct cpufreq_policy *policy) @@ -1117,13 +1112,25 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cp return ret; } +static void refresh_frequency_limits(struct cpufreq_policy *policy) +{ + struct cpufreq_policy new_policy = *policy; + + pr_debug("updating policy for CPU %u\n", policy->cpu); + + new_policy.min = policy->user_policy.min; + new_policy.max = policy->user_policy.max; + + cpufreq_set_policy(policy, &new_policy); +} + static void handle_update(struct work_struct *work) { struct cpufreq_policy *policy = container_of(work, struct cpufreq_policy, update); - unsigned int cpu = policy->cpu; - pr_debug("handle_update for cpu %u called\n", cpu); - cpufreq_update_policy(cpu); + + pr_debug("handle_update for cpu %u called\n", policy->cpu); + refresh_frequency_limits(policy); } static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu) @@ -1303,7 +1310,7 @@ static int cpufreq_online(unsigned int cpu) policy->max = policy->user_policy.max; } - if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { + if (cpufreq_driver->get && has_target()) { policy->cur = cpufreq_driver->get(policy->cpu); if (!policy->cur) { pr_err("%s: ->get() failed\n", __func__); @@ -1378,8 +1385,7 @@ static int cpufreq_online(unsigned int cpu) if (cpufreq_driver->ready) cpufreq_driver->ready(policy); - if (IS_ENABLED(CONFIG_CPU_THERMAL) && - cpufreq_driver->flags & CPUFREQ_IS_COOLING_DEV) + if (cpufreq_thermal_control_enabled(cpufreq_driver)) policy->cdev = of_cpufreq_cooling_register(policy); pr_debug("initialization complete\n"); @@ -1469,8 +1475,7 @@ static int cpufreq_offline(unsigned int cpu) goto unlock; } - if (IS_ENABLED(CONFIG_CPU_THERMAL) && - cpufreq_driver->flags & CPUFREQ_IS_COOLING_DEV) { + if (cpufreq_thermal_control_enabled(cpufreq_driver)) { cpufreq_cooling_unregister(policy->cdev); policy->cdev = NULL; } @@ -1549,6 +1554,30 @@ static void cpufreq_out_of_sync(struct cpufreq_policy *policy, cpufreq_freq_transition_end(policy, &freqs, 0); } +static unsigned int cpufreq_verify_current_freq(struct cpufreq_policy *policy, bool update) +{ + unsigned int new_freq; + + new_freq = cpufreq_driver->get(policy->cpu); + if (!new_freq) + return 0; + + /* + * If fast frequency switching is used with the given policy, the check + * against policy->cur is pointless, so skip it in that case. + */ + if (policy->fast_switch_enabled || !has_target()) + return new_freq; + + if (policy->cur != new_freq) { + cpufreq_out_of_sync(policy, new_freq); + if (update) + schedule_work(&policy->update); + } + + return new_freq; +} + /** * cpufreq_quick_get - get the CPU frequency (in kHz) from policy->cur * @cpu: CPU number @@ -1604,31 +1633,10 @@ EXPORT_SYMBOL(cpufreq_quick_get_max); static unsigned int __cpufreq_get(struct cpufreq_policy *policy) { - unsigned int ret_freq = 0; - if (unlikely(policy_is_inactive(policy))) - return ret_freq; - - ret_freq = cpufreq_driver->get(policy->cpu); - - /* - * If fast frequency switching is used with the given policy, the check - * against policy->cur is pointless, so skip it in that case too. - */ - if (policy->fast_switch_enabled) - return ret_freq; - - if (ret_freq && policy->cur && - !(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) { - /* verify no discrepancy between actual and - saved value exists */ - if (unlikely(ret_freq != policy->cur)) { - cpufreq_out_of_sync(policy, ret_freq); - schedule_work(&policy->update); - } - } + return 0; - return ret_freq; + return cpufreq_verify_current_freq(policy, true); } /** @@ -1655,24 +1663,6 @@ unsigned int cpufreq_get(unsigned int cpu) } EXPORT_SYMBOL(cpufreq_get); -static unsigned int cpufreq_update_current_freq(struct cpufreq_policy *policy) -{ - unsigned int new_freq; - - new_freq = cpufreq_driver->get(policy->cpu); - if (!new_freq) - return 0; - - if (!policy->cur) { - pr_debug("cpufreq: Driver did not initialize current freq\n"); - policy->cur = new_freq; - } else if (policy->cur != new_freq && has_target()) { - cpufreq_out_of_sync(policy, new_freq); - } - - return new_freq; -} - static struct subsys_interface cpufreq_interface = { .name = "cpufreq", .subsys = &cpu_subsys, @@ -2153,8 +2143,8 @@ static int cpufreq_start_governor(struct cpufreq_policy *policy) pr_debug("%s: for CPU %u\n", __func__, policy->cpu); - if (cpufreq_driver->get && !cpufreq_driver->setpolicy) - cpufreq_update_current_freq(policy); + if (cpufreq_driver->get) + cpufreq_verify_current_freq(policy, false); if (policy->governor->start) { ret = policy->governor->start(policy); @@ -2395,7 +2385,6 @@ int cpufreq_set_policy(struct cpufreq_policy *policy, void cpufreq_update_policy(unsigned int cpu) { struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu); - struct cpufreq_policy new_policy; if (!policy) return; @@ -2404,16 +2393,11 @@ void cpufreq_update_policy(unsigned int cpu) * BIOS might change freq behind our back * -> ask driver for current freq and notify governors about a change */ - if (cpufreq_driver->get && !cpufreq_driver->setpolicy && - (cpufreq_suspended || WARN_ON(!cpufreq_update_current_freq(policy)))) + if (cpufreq_driver->get && has_target() && + (cpufreq_suspended || WARN_ON(!cpufreq_verify_current_freq(policy, false)))) goto unlock; - pr_debug("updating policy for CPU %u\n", cpu); - memcpy(&new_policy, policy, sizeof(*policy)); - new_policy.min = policy->user_policy.min; - new_policy.max = policy->user_policy.max; - - cpufreq_set_policy(policy, &new_policy); + refresh_frequency_limits(policy); unlock: cpufreq_cpu_release(policy); diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 4268f87e99fc..b66e81c06a57 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * drivers/cpufreq/cpufreq_conservative.c * @@ -5,10 +6,6 @@ * (C) 2003 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>. * Jun Nakajima <jun.nakajima@intel.com> * (C) 2009 Alexander Clouter <alex@digriz.org.uk> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/slab.h> diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 9d1d9bf02710..4bb054d0cb43 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * drivers/cpufreq/cpufreq_governor.c * @@ -8,10 +9,6 @@ * (C) 2003 Jun Nakajima <jun.nakajima@intel.com> * (C) 2009 Alexander Clouter <alex@digriz.org.uk> * (c) 2012 Viresh Kumar <viresh.kumar@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 8463f5def0f5..c56773c25757 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * drivers/cpufreq/cpufreq_governor.h * @@ -8,10 +9,6 @@ * (C) 2003 Jun Nakajima <jun.nakajima@intel.com> * (C) 2009 Alexander Clouter <alex@digriz.org.uk> * (c) 2012 Viresh Kumar <viresh.kumar@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef _CPUFREQ_GOVERNOR_H diff --git a/drivers/cpufreq/cpufreq_governor_attr_set.c b/drivers/cpufreq/cpufreq_governor_attr_set.c index 52841f807a7e..66b05a326910 100644 --- a/drivers/cpufreq/cpufreq_governor_attr_set.c +++ b/drivers/cpufreq/cpufreq_governor_attr_set.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Abstract code for CPUFreq governor tunable sysfs attributes. * * Copyright (C) 2016, Intel Corporation * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include "cpufreq_governor.h" diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 6b423eebfd5d..dced033875bf 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * drivers/cpufreq/cpufreq_ondemand.c * * Copyright (C) 2001 Russell King * (C) 2003 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>. * Jun Nakajima <jun.nakajima@intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/cpufreq_ondemand.h b/drivers/cpufreq/cpufreq_ondemand.h index 640ea4e97106..1af8e5c4b86f 100644 --- a/drivers/cpufreq/cpufreq_ondemand.h +++ b/drivers/cpufreq/cpufreq_ondemand.h @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Header file for CPUFreq ondemand governor and related code. * * Copyright (C) 2016, Intel Corporation * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include "cpufreq_governor.h" diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c index dafb679adc58..aaa04dfcacd9 100644 --- a/drivers/cpufreq/cpufreq_performance.c +++ b/drivers/cpufreq/cpufreq_performance.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/cpufreq/cpufreq_performance.c * * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index 78a651038faf..c143dc237d87 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/cpufreq/cpufreq_powersave.c * * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 08b192eb22c6..f9bcf0f3ea30 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * drivers/cpufreq/cpufreq_stats.c * * Copyright (C) 2003-2004 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>. * (C) 2004 Zou Nan hai <nanhai.zou@intel.com>. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/cpu.h> diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c index bd897e3e134d..cbd81c58cb8f 100644 --- a/drivers/cpufreq/cpufreq_userspace.c +++ b/drivers/cpufreq/cpufreq_userspace.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/cpufreq/cpufreq_userspace.c * * Copyright (C) 2001 Russell King * (C) 2002 - 2004 Dominik Brodowski <linux@brodo.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/davinci-cpufreq.c b/drivers/cpufreq/davinci-cpufreq.c index 940fe85db97a..3de48ae60c29 100644 --- a/drivers/cpufreq/davinci-cpufreq.c +++ b/drivers/cpufreq/davinci-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * CPU frequency scaling for DaVinci * @@ -13,10 +14,6 @@ * Copyright (C) 2007-2008 Texas Instruments, Inc. * Updated to support OMAP3 * Rajendra Nayak <rnayak@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/types.h> #include <linux/cpufreq.h> diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index e7be0af3199f..ded427e0a488 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/cpufreq/freq_table.c * * Copyright (C) 2002 - 2003 Dominik Brodowski - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index 8f52a06664e3..e97b5733aa24 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Cyrix MediaGX and NatSemi Geode Suspend Modulation * (C) 2002 Zwane Mwaikambo <zwane@commfireservices.com> * (C) 2002 Hiroshi Miura <miura@da-cha.org> * All Rights Reserved * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation - * * The author(s) of this software shall not be held liable for damages * of any nature resulting due to the use of this software. This * software is provided AS-IS with no warranties. @@ -48,7 +45,6 @@ * off_duration = (freq * DURATION) / stock_freq * on_duration = DURATION - off_duration * - * *--------------------------------------------------------------------------- * * ChangeLog: diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c index 1608f7105c9f..5a7f6dafcddb 100644 --- a/drivers/cpufreq/highbank-cpufreq.c +++ b/drivers/cpufreq/highbank-cpufreq.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Calxeda, Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This driver provides the clk notifier callbacks that are used when * the cpufreq-dt driver changes to frequency to alert the highbank * EnergyCore Management Engine (ECME) about the need to change diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c new file mode 100644 index 000000000000..b54fd26ea7df --- /dev/null +++ b/drivers/cpufreq/imx-cpufreq-dt.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 NXP + */ + +#include <linux/cpu.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/nvmem-consumer.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm_opp.h> +#include <linux/slab.h> + +#define OCOTP_CFG3_SPEED_GRADE_SHIFT 8 +#define OCOTP_CFG3_SPEED_GRADE_MASK (0x3 << 8) +#define OCOTP_CFG3_MKT_SEGMENT_SHIFT 6 +#define OCOTP_CFG3_MKT_SEGMENT_MASK (0x3 << 6) + +/* cpufreq-dt device registered by imx-cpufreq-dt */ +static struct platform_device *cpufreq_dt_pdev; +static struct opp_table *cpufreq_opp_table; + +static int imx_cpufreq_dt_probe(struct platform_device *pdev) +{ + struct device *cpu_dev = get_cpu_device(0); + u32 cell_value, supported_hw[2]; + int speed_grade, mkt_segment; + int ret; + + ret = nvmem_cell_read_u32(cpu_dev, "speed_grade", &cell_value); + if (ret) + return ret; + + speed_grade = (cell_value & OCOTP_CFG3_SPEED_GRADE_MASK) >> OCOTP_CFG3_SPEED_GRADE_SHIFT; + mkt_segment = (cell_value & OCOTP_CFG3_MKT_SEGMENT_MASK) >> OCOTP_CFG3_MKT_SEGMENT_SHIFT; + + /* + * Early samples without fuses written report "0 0" which means + * consumer segment and minimum speed grading. + * + * According to datasheet minimum speed grading is not supported for + * consumer parts so clamp to 1 to avoid warning for "no OPPs" + * + * Applies to 8mq and 8mm. + */ + if (mkt_segment == 0 && speed_grade == 0 && ( + of_machine_is_compatible("fsl,imx8mm") || + of_machine_is_compatible("fsl,imx8mq"))) + speed_grade = 1; + + supported_hw[0] = BIT(speed_grade); + supported_hw[1] = BIT(mkt_segment); + dev_info(&pdev->dev, "cpu speed grade %d mkt segment %d supported-hw %#x %#x\n", + speed_grade, mkt_segment, supported_hw[0], supported_hw[1]); + + cpufreq_opp_table = dev_pm_opp_set_supported_hw(cpu_dev, supported_hw, 2); + if (IS_ERR(cpufreq_opp_table)) { + ret = PTR_ERR(cpufreq_opp_table); + dev_err(&pdev->dev, "Failed to set supported opp: %d\n", ret); + return ret; + } + + cpufreq_dt_pdev = platform_device_register_data( + &pdev->dev, "cpufreq-dt", -1, NULL, 0); + if (IS_ERR(cpufreq_dt_pdev)) { + dev_pm_opp_put_supported_hw(cpufreq_opp_table); + ret = PTR_ERR(cpufreq_dt_pdev); + dev_err(&pdev->dev, "Failed to register cpufreq-dt: %d\n", ret); + return ret; + } + + return 0; +} + +static int imx_cpufreq_dt_remove(struct platform_device *pdev) +{ + platform_device_unregister(cpufreq_dt_pdev); + dev_pm_opp_put_supported_hw(cpufreq_opp_table); + + return 0; +} + +static struct platform_driver imx_cpufreq_dt_driver = { + .probe = imx_cpufreq_dt_probe, + .remove = imx_cpufreq_dt_remove, + .driver = { + .name = "imx-cpufreq-dt", + }, +}; +module_platform_driver(imx_cpufreq_dt_driver); + +MODULE_ALIAS("platform:imx-cpufreq-dt"); +MODULE_DESCRIPTION("Freescale i.MX cpufreq speed grading driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index 3e17560b1efe..47ccfa6b17b7 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clk.h> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 34b54df41aaa..f2ff5de988c1 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * intel_pstate.c: Native P state management for Intel processors * * (C) Copyright 2012 Intel Corporation * Author: Dirk Brandewie <dirk.j.brandewie@intel.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/maple-cpufreq.c b/drivers/cpufreq/maple-cpufreq.c index a94355723ef8..f5220b3d4ec5 100644 --- a/drivers/cpufreq/maple-cpufreq.c +++ b/drivers/cpufreq/maple-cpufreq.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2011 Dmitry Eremin-Solenikov * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This driver adds basic cpufreq support for SMU & 970FX based G5 Macs, * that is iMac G5 and latest single CPU desktop. */ diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index 68052b74d28f..29643f06a3c3 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * CPU frequency scaling for OMAP using OPP information * @@ -8,10 +9,6 @@ * * Copyright (C) 2007-2011 Texas Instruments, Inc. * - OMAP3/4 support by Rajendra Nayak, Santosh Shilimkar - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 1e5e64643c3a..fdc767fdbe6a 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -582,10 +582,10 @@ static int __init pcc_cpufreq_init(void) /* Skip initialization if another cpufreq driver is there. */ if (cpufreq_get_current_driver()) - return 0; + return -EEXIST; if (acpi_disabled) - return 0; + return -ENODEV; ret = pcc_cpufreq_probe(); if (ret) { diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index 9b4ce2eb8222..650104d729f3 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -1,16 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> * Copyright (C) 2004 John Steele Scott <toojays@toojays.net> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * TODO: Need a big cleanup here. Basically, we need to have different * cpufreq_driver structures for the different type of HW instead of the * current mess. We also need to better deal with the detection of the * type of machine. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c index 1d32a863332d..1af3492a000d 100644 --- a/drivers/cpufreq/pmac64-cpufreq.c +++ b/drivers/cpufreq/pmac64-cpufreq.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This driver adds basic cpufreq support for SMU & 970FX based G5 Macs, * that is iMac G5 and latest single CPU desktop. */ diff --git a/drivers/cpufreq/powernow-k8.h b/drivers/cpufreq/powernow-k8.h index 45ce11e86626..83331ceb6bc3 100644 --- a/drivers/cpufreq/powernow-k8.h +++ b/drivers/cpufreq/powernow-k8.h @@ -1,8 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * (c) 2003-2006 Advanced Micro Devices, Inc. - * Your use of this code is subject to the terms and conditions of the - * GNU general public license version 2. See "COPYING" or - * http://www.gnu.org/licenses/gpl.html */ struct powernow_k8_data { diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c index 71b640c8c1a5..8e436dc75c8b 100644 --- a/drivers/cpufreq/qoriq-cpufreq.c +++ b/drivers/cpufreq/qoriq-cpufreq.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2013 Freescale Semiconductor, Inc. * * CPU Frequency Scaling driver for Freescale QorIQ SoCs. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/raspberrypi-cpufreq.c b/drivers/cpufreq/raspberrypi-cpufreq.c new file mode 100644 index 000000000000..2bc7d9734272 --- /dev/null +++ b/drivers/cpufreq/raspberrypi-cpufreq.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Raspberry Pi cpufreq driver + * + * Copyright (C) 2019, Nicolas Saenz Julienne <nsaenzjulienne@suse.de> + */ + +#include <linux/clk.h> +#include <linux/cpu.h> +#include <linux/cpufreq.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_opp.h> + +#define RASPBERRYPI_FREQ_INTERVAL 100000000 + +static struct platform_device *cpufreq_dt; + +static int raspberrypi_cpufreq_probe(struct platform_device *pdev) +{ + struct device *cpu_dev; + unsigned long min, max; + unsigned long rate; + struct clk *clk; + int ret; + + cpu_dev = get_cpu_device(0); + if (!cpu_dev) { + pr_err("Cannot get CPU for cpufreq driver\n"); + return -ENODEV; + } + + clk = clk_get(cpu_dev, NULL); + if (IS_ERR(clk)) { + dev_err(cpu_dev, "Cannot get clock for CPU0\n"); + return PTR_ERR(clk); + } + + /* + * The max and min frequencies are configurable in the Raspberry Pi + * firmware, so we query them at runtime. + */ + min = roundup(clk_round_rate(clk, 0), RASPBERRYPI_FREQ_INTERVAL); + max = roundup(clk_round_rate(clk, ULONG_MAX), RASPBERRYPI_FREQ_INTERVAL); + clk_put(clk); + + for (rate = min; rate <= max; rate += RASPBERRYPI_FREQ_INTERVAL) { + ret = dev_pm_opp_add(cpu_dev, rate, 0); + if (ret) + goto remove_opp; + } + + cpufreq_dt = platform_device_register_simple("cpufreq-dt", -1, NULL, 0); + ret = PTR_ERR_OR_ZERO(cpufreq_dt); + if (ret) { + dev_err(cpu_dev, "Failed to create platform device, %d\n", ret); + goto remove_opp; + } + + return 0; + +remove_opp: + dev_pm_opp_remove_all_dynamic(cpu_dev); + + return ret; +} + +static int raspberrypi_cpufreq_remove(struct platform_device *pdev) +{ + struct device *cpu_dev; + + cpu_dev = get_cpu_device(0); + if (cpu_dev) + dev_pm_opp_remove_all_dynamic(cpu_dev); + + platform_device_unregister(cpufreq_dt); + + return 0; +} + +/* + * Since the driver depends on clk-raspberrypi, which may return EPROBE_DEFER, + * all the activity is performed in the probe, which may be defered as well. + */ +static struct platform_driver raspberrypi_cpufreq_driver = { + .driver = { + .name = "raspberrypi-cpufreq", + }, + .probe = raspberrypi_cpufreq_probe, + .remove = raspberrypi_cpufreq_remove, +}; +module_platform_driver(raspberrypi_cpufreq_driver); + +MODULE_AUTHOR("Nicolas Saenz Julienne <nsaenzjulienne@suse.de"); +MODULE_DESCRIPTION("Raspberry Pi cpufreq driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:raspberrypi-cpufreq"); diff --git a/drivers/cpufreq/s3c2410-cpufreq.c b/drivers/cpufreq/s3c2410-cpufreq.c index b8e5da8e188b..0c4f2ccd7e22 100644 --- a/drivers/cpufreq/s3c2410-cpufreq.c +++ b/drivers/cpufreq/s3c2410-cpufreq.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2006-2008 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks <ben@simtec.co.uk> * * S3C2410 CPU Frequency scaling - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> diff --git a/drivers/cpufreq/s3c2412-cpufreq.c b/drivers/cpufreq/s3c2412-cpufreq.c index b04b6f02bbdc..53385a9ab957 100644 --- a/drivers/cpufreq/s3c2412-cpufreq.c +++ b/drivers/cpufreq/s3c2412-cpufreq.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2008 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks <ben@simtec.co.uk> * * S3C2412 CPU Frequency scalling - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c index 5b2db3c6568f..f7ff1ed7fef1 100644 --- a/drivers/cpufreq/s3c2416-cpufreq.c +++ b/drivers/cpufreq/s3c2416-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * S3C2416/2450 CPUfreq Support * @@ -6,10 +7,6 @@ * based on s3c64xx_cpufreq.c * * Copyright 2009 Wolfson Microelectronics plc - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/drivers/cpufreq/s3c2440-cpufreq.c b/drivers/cpufreq/s3c2440-cpufreq.c index d2f67b7a20dd..3f772ba8896e 100644 --- a/drivers/cpufreq/s3c2440-cpufreq.c +++ b/drivers/cpufreq/s3c2440-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2006-2009 Simtec Electronics * http://armlinux.simtec.co.uk/ @@ -5,10 +6,6 @@ * Vincent Sanders <vince@simtec.co.uk> * * S3C2440/S3C2442 CPU Frequency scaling - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/s3c24xx-cpufreq-debugfs.c b/drivers/cpufreq/s3c24xx-cpufreq-debugfs.c index 0df87b6480fe..290e3539d03e 100644 --- a/drivers/cpufreq/s3c24xx-cpufreq-debugfs.c +++ b/drivers/cpufreq/s3c24xx-cpufreq-debugfs.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2009 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks <ben@simtec.co.uk> * * S3C24XX CPU Frequency scaling - debugfs status support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c index 3b291a2b0cb3..ed0e713b1b57 100644 --- a/drivers/cpufreq/s3c24xx-cpufreq.c +++ b/drivers/cpufreq/s3c24xx-cpufreq.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2006-2008 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks <ben@simtec.co.uk> * * S3C24XX CPU Frequency scaling - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c index 0cb9040eca49..37df2d892eb0 100644 --- a/drivers/cpufreq/s3c64xx-cpufreq.c +++ b/drivers/cpufreq/s3c64xx-cpufreq.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2009 Wolfson Microelectronics plc * * S3C64xx CPUfreq Support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) "cpufreq: " fmt diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c index 5b4289460bc9..e5cb17d4be7b 100644 --- a/drivers/cpufreq/s5pv210-cpufreq.c +++ b/drivers/cpufreq/s5pv210-cpufreq.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2010 Samsung Electronics Co., Ltd. * http://www.samsung.com * * CPU frequency scaling for S5PC110/S5PV210 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -481,7 +478,7 @@ static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index) arm_volt, arm_volt_max); } - printk(KERN_DEBUG "Perf changed[L%d]\n", index); + pr_debug("Perf changed[L%d]\n", index); exit: mutex_unlock(&set_freq_lock); diff --git a/drivers/cpufreq/sa1110-cpufreq.c b/drivers/cpufreq/sa1110-cpufreq.c index 66e5fb088ecc..dab54e051c0e 100644 --- a/drivers/cpufreq/sa1110-cpufreq.c +++ b/drivers/cpufreq/sa1110-cpufreq.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/mach-sa1100/cpu-sa1110.c * * Copyright (C) 2001 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Note: there are two erratas that apply to the SA1110 here: * 7 - SDRAM auto-power-up failure (rev A0) * 13 - Corruption of internal register reads/writes following diff --git a/drivers/cpufreq/sfi-cpufreq.c b/drivers/cpufreq/sfi-cpufreq.c index 978770432b13..45cfdf67cf03 100644 --- a/drivers/cpufreq/sfi-cpufreq.c +++ b/drivers/cpufreq/sfi-cpufreq.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * SFI Performance States Driver * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * * Author: Vishwesh M Rudramuni <vishwesh.m.rudramuni@intel.com> * Author: Srinidhi Kasagar <srinidhi.kasagar@intel.com> */ diff --git a/drivers/cpufreq/sti-cpufreq.c b/drivers/cpufreq/sti-cpufreq.c index 47105735df12..8f16bbb164b8 100644 --- a/drivers/cpufreq/sti-cpufreq.c +++ b/drivers/cpufreq/sti-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Match running platform with pre-defined OPP values for CPUFreq * @@ -5,10 +6,6 @@ * Lee Jones <lee.jones@linaro.org> * * Copyright (C) 2015 STMicroelectronics (R&D) Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the version 2 of the GNU General Public License as - * published by the Free Software Foundation */ #include <linux/cpu.h> diff --git a/drivers/cpufreq/tegra124-cpufreq.c b/drivers/cpufreq/tegra124-cpufreq.c index 5e748c8a5c9a..4f0c637b3b49 100644 --- a/drivers/cpufreq/tegra124-cpufreq.c +++ b/drivers/cpufreq/tegra124-cpufreq.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Tegra 124 cpufreq driver - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c index f1e09022b819..bcecb068b51b 100644 --- a/drivers/cpufreq/tegra186-cpufreq.c +++ b/drivers/cpufreq/tegra186-cpufreq.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #include <linux/cpufreq.h> diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c index 05f57dcd5215..3c32cc7b0671 100644 --- a/drivers/cpufreq/tegra20-cpufreq.c +++ b/drivers/cpufreq/tegra20-cpufreq.c @@ -1,19 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2010 Google, Inc. * * Author: * Colin Cross <ccross@google.com> * Based on arch/arm/plat-omap/cpu-omap.c, (C) 2005 Nokia Corporation - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/clk.h> diff --git a/drivers/cpufreq/unicore2-cpufreq.c b/drivers/cpufreq/unicore2-cpufreq.c index db62d9844751..707dbc1b7ac8 100644 --- a/drivers/cpufreq/unicore2-cpufreq.c +++ b/drivers/cpufreq/unicore2-cpufreq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * clock scaling for the UniCore-II * @@ -5,10 +6,6 @@ * * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> * Copyright (C) 2001-2010 Guan Xuetao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/err.h> |