This patch moves cpufreq driver of MIPS architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
endmenu
-source "arch/mips/kernel/cpufreq/Kconfig"
+config MIPS_EXTERNAL_TIMER
+ bool
+
+if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
+menu "CPU Power Management"
+source "drivers/cpufreq/Kconfig"
+endmenu
+endif
source "net/Kconfig"
obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o
-obj-$(CONFIG_MIPS_CPUFREQ) += cpufreq/
-
obj-$(CONFIG_PERF_EVENTS) += perf_event.o
obj-$(CONFIG_HW_PERF_EVENTS) += perf_event_mipsxx.o
+++ /dev/null
-#
-# CPU Frequency scaling
-#
-
-config MIPS_EXTERNAL_TIMER
- bool
-
-config MIPS_CPUFREQ
- bool
- default y
- depends on CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
-
-if MIPS_CPUFREQ
-
-menu "CPU Frequency scaling"
-
-source "drivers/cpufreq/Kconfig"
-
-if CPU_FREQ
-
-comment "CPUFreq processor drivers"
-
-config LOONGSON2_CPUFREQ
- tristate "Loongson2 CPUFreq Driver"
- select CPU_FREQ_TABLE
- depends on MIPS_CPUFREQ
- help
- This option adds a CPUFreq driver for loongson processors which
- support software configurable cpu frequency.
-
- Loongson2F and it's successors support this feature.
-
- For details, take a look at <file:Documentation/cpu-freq/>.
-
- If in doubt, say N.
-
-endif # CPU_FREQ
-
-endmenu
-
-endif # MIPS_CPUFREQ
+++ /dev/null
-#
-# Makefile for the Linux/MIPS cpufreq.
-#
-
-obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
+++ /dev/null
-/*
- * Cpufreq driver for the loongson-2 processors
- *
- * The 2E revision of loongson processor not support this feature.
- *
- * Copyright (C) 2006 - 2008 Lemote Inc. & Insititute of Computing Technology
- * Author: Yanhua, yanh@lemote.com
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/cpufreq.h>
-#include <linux/module.h>
-#include <linux/err.h>
-#include <linux/sched.h> /* set_cpus_allowed() */
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-
-#include <asm/clock.h>
-
-#include <asm/mach-loongson/loongson.h>
-
-static uint nowait;
-
-static struct clk *cpuclk;
-
-static void (*saved_cpu_wait) (void);
-
-static int loongson2_cpu_freq_notifier(struct notifier_block *nb,
- unsigned long val, void *data);
-
-static struct notifier_block loongson2_cpufreq_notifier_block = {
- .notifier_call = loongson2_cpu_freq_notifier
-};
-
-static int loongson2_cpu_freq_notifier(struct notifier_block *nb,
- unsigned long val, void *data)
-{
- if (val == CPUFREQ_POSTCHANGE)
- current_cpu_data.udelay_val = loops_per_jiffy;
-
- return 0;
-}
-
-static unsigned int loongson2_cpufreq_get(unsigned int cpu)
-{
- return clk_get_rate(cpuclk);
-}
-
-/*
- * Here we notify other drivers of the proposed change and the final change.
- */
-static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- unsigned int cpu = policy->cpu;
- unsigned int newstate = 0;
- cpumask_t cpus_allowed;
- struct cpufreq_freqs freqs;
- unsigned int freq;
-
- cpus_allowed = current->cpus_allowed;
- set_cpus_allowed_ptr(current, cpumask_of(cpu));
-
- if (cpufreq_frequency_table_target
- (policy, &loongson2_clockmod_table[0], target_freq, relation,
- &newstate))
- return -EINVAL;
-
- freq =
- ((cpu_clock_freq / 1000) *
- loongson2_clockmod_table[newstate].index) / 8;
- if (freq < policy->min || freq > policy->max)
- return -EINVAL;
-
- pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
-
- freqs.old = loongson2_cpufreq_get(cpu);
- freqs.new = freq;
- freqs.flags = 0;
-
- if (freqs.new == freqs.old)
- return 0;
-
- /* notifiers */
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
- set_cpus_allowed_ptr(current, &cpus_allowed);
-
- /* setting the cpu frequency */
- clk_set_rate(cpuclk, freq);
-
- /* notifiers */
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
- pr_debug("cpufreq: set frequency %u kHz\n", freq);
-
- return 0;
-}
-
-static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
-{
- int i;
- unsigned long rate;
- int ret;
-
- cpuclk = clk_get(NULL, "cpu_clk");
- if (IS_ERR(cpuclk)) {
- printk(KERN_ERR "cpufreq: couldn't get CPU clk\n");
- return PTR_ERR(cpuclk);
- }
-
- rate = cpu_clock_freq / 1000;
- if (!rate) {
- clk_put(cpuclk);
- return -EINVAL;
- }
- ret = clk_set_rate(cpuclk, rate);
- if (ret) {
- clk_put(cpuclk);
- return ret;
- }
-
- /* clock table init */
- for (i = 2;
- (loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END);
- i++)
- loongson2_clockmod_table[i].frequency = (rate * i) / 8;
-
- policy->cur = loongson2_cpufreq_get(policy->cpu);
-
- cpufreq_frequency_table_get_attr(&loongson2_clockmod_table[0],
- policy->cpu);
-
- return cpufreq_frequency_table_cpuinfo(policy,
- &loongson2_clockmod_table[0]);
-}
-
-static int loongson2_cpufreq_verify(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy,
- &loongson2_clockmod_table[0]);
-}
-
-static int loongson2_cpufreq_exit(struct cpufreq_policy *policy)
-{
- clk_put(cpuclk);
- return 0;
-}
-
-static struct freq_attr *loongson2_table_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
-static struct cpufreq_driver loongson2_cpufreq_driver = {
- .owner = THIS_MODULE,
- .name = "loongson2",
- .init = loongson2_cpufreq_cpu_init,
- .verify = loongson2_cpufreq_verify,
- .target = loongson2_cpufreq_target,
- .get = loongson2_cpufreq_get,
- .exit = loongson2_cpufreq_exit,
- .attr = loongson2_table_attr,
-};
-
-static struct platform_device_id platform_device_ids[] = {
- {
- .name = "loongson2_cpufreq",
- },
- {}
-};
-
-MODULE_DEVICE_TABLE(platform, platform_device_ids);
-
-static struct platform_driver platform_driver = {
- .driver = {
- .name = "loongson2_cpufreq",
- .owner = THIS_MODULE,
- },
- .id_table = platform_device_ids,
-};
-
-/*
- * This is the simple version of Loongson-2 wait, Maybe we need do this in
- * interrupt disabled context.
- */
-
-static DEFINE_SPINLOCK(loongson2_wait_lock);
-
-static void loongson2_cpu_wait(void)
-{
- unsigned long flags;
- u32 cpu_freq;
-
- spin_lock_irqsave(&loongson2_wait_lock, flags);
- cpu_freq = LOONGSON_CHIPCFG0;
- LOONGSON_CHIPCFG0 &= ~0x7; /* Put CPU into wait mode */
- LOONGSON_CHIPCFG0 = cpu_freq; /* Restore CPU state */
- spin_unlock_irqrestore(&loongson2_wait_lock, flags);
-}
-
-static int __init cpufreq_init(void)
-{
- int ret;
-
- /* Register platform stuff */
- ret = platform_driver_register(&platform_driver);
- if (ret)
- return ret;
-
- pr_info("cpufreq: Loongson-2F CPU frequency driver.\n");
-
- cpufreq_register_notifier(&loongson2_cpufreq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
-
- ret = cpufreq_register_driver(&loongson2_cpufreq_driver);
-
- if (!ret && !nowait) {
- saved_cpu_wait = cpu_wait;
- cpu_wait = loongson2_cpu_wait;
- }
-
- return ret;
-}
-
-static void __exit cpufreq_exit(void)
-{
- if (!nowait && saved_cpu_wait)
- cpu_wait = saved_cpu_wait;
- cpufreq_unregister_driver(&loongson2_cpufreq_driver);
- cpufreq_unregister_notifier(&loongson2_cpufreq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
-
- platform_driver_unregister(&platform_driver);
-}
-
-module_init(cpufreq_init);
-module_exit(cpufreq_exit);
-
-module_param(nowait, uint, 0644);
-MODULE_PARM_DESC(nowait, "Disable Loongson-2F specific wait");
-
-MODULE_AUTHOR("Yanhua <yanh@lemote.com>");
-MODULE_DESCRIPTION("cpufreq driver for Loongson2F");
-MODULE_LICENSE("GPL");
endmenu
+menu "MIPS CPUFreq processor drivers"
+depends on MIPS
+
+config LOONGSON2_CPUFREQ
+ tristate "Loongson2 CPUFreq Driver"
+ select CPU_FREQ_TABLE
+ help
+ This option adds a CPUFreq driver for loongson processors which
+ support software configurable cpu frequency.
+
+ Loongson2F and it's successors support this feature.
+
+ For details, take a look at <file:Documentation/cpu-freq/>.
+
+ If in doubt, say N.
+
+endmenu
+
menu "PowerPC CPU frequency scaling drivers"
depends on PPC32 || PPC64
source "drivers/cpufreq/Kconfig.powerpc"
obj-$(CONFIG_CRIS_MACH_ARTPEC3) += cris-artpec3-cpufreq.o
obj-$(CONFIG_ETRAXFS) += cris-etraxfs-cpufreq.o
obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o
+obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
--- /dev/null
+/*
+ * Cpufreq driver for the loongson-2 processors
+ *
+ * The 2E revision of loongson processor not support this feature.
+ *
+ * Copyright (C) 2006 - 2008 Lemote Inc. & Insititute of Computing Technology
+ * Author: Yanhua, yanh@lemote.com
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/cpufreq.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/sched.h> /* set_cpus_allowed() */
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+
+#include <asm/clock.h>
+
+#include <asm/mach-loongson/loongson.h>
+
+static uint nowait;
+
+static struct clk *cpuclk;
+
+static void (*saved_cpu_wait) (void);
+
+static int loongson2_cpu_freq_notifier(struct notifier_block *nb,
+ unsigned long val, void *data);
+
+static struct notifier_block loongson2_cpufreq_notifier_block = {
+ .notifier_call = loongson2_cpu_freq_notifier
+};
+
+static int loongson2_cpu_freq_notifier(struct notifier_block *nb,
+ unsigned long val, void *data)
+{
+ if (val == CPUFREQ_POSTCHANGE)
+ current_cpu_data.udelay_val = loops_per_jiffy;
+
+ return 0;
+}
+
+static unsigned int loongson2_cpufreq_get(unsigned int cpu)
+{
+ return clk_get_rate(cpuclk);
+}
+
+/*
+ * Here we notify other drivers of the proposed change and the final change.
+ */
+static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
+ unsigned int target_freq,
+ unsigned int relation)
+{
+ unsigned int cpu = policy->cpu;
+ unsigned int newstate = 0;
+ cpumask_t cpus_allowed;
+ struct cpufreq_freqs freqs;
+ unsigned int freq;
+
+ cpus_allowed = current->cpus_allowed;
+ set_cpus_allowed_ptr(current, cpumask_of(cpu));
+
+ if (cpufreq_frequency_table_target
+ (policy, &loongson2_clockmod_table[0], target_freq, relation,
+ &newstate))
+ return -EINVAL;
+
+ freq =
+ ((cpu_clock_freq / 1000) *
+ loongson2_clockmod_table[newstate].index) / 8;
+ if (freq < policy->min || freq > policy->max)
+ return -EINVAL;
+
+ pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
+
+ freqs.old = loongson2_cpufreq_get(cpu);
+ freqs.new = freq;
+ freqs.flags = 0;
+
+ if (freqs.new == freqs.old)
+ return 0;
+
+ /* notifiers */
+ cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
+
+ set_cpus_allowed_ptr(current, &cpus_allowed);
+
+ /* setting the cpu frequency */
+ clk_set_rate(cpuclk, freq);
+
+ /* notifiers */
+ cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
+
+ pr_debug("cpufreq: set frequency %u kHz\n", freq);
+
+ return 0;
+}
+
+static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
+{
+ int i;
+ unsigned long rate;
+ int ret;
+
+ cpuclk = clk_get(NULL, "cpu_clk");
+ if (IS_ERR(cpuclk)) {
+ printk(KERN_ERR "cpufreq: couldn't get CPU clk\n");
+ return PTR_ERR(cpuclk);
+ }
+
+ rate = cpu_clock_freq / 1000;
+ if (!rate) {
+ clk_put(cpuclk);
+ return -EINVAL;
+ }
+ ret = clk_set_rate(cpuclk, rate);
+ if (ret) {
+ clk_put(cpuclk);
+ return ret;
+ }
+
+ /* clock table init */
+ for (i = 2;
+ (loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END);
+ i++)
+ loongson2_clockmod_table[i].frequency = (rate * i) / 8;
+
+ policy->cur = loongson2_cpufreq_get(policy->cpu);
+
+ cpufreq_frequency_table_get_attr(&loongson2_clockmod_table[0],
+ policy->cpu);
+
+ return cpufreq_frequency_table_cpuinfo(policy,
+ &loongson2_clockmod_table[0]);
+}
+
+static int loongson2_cpufreq_verify(struct cpufreq_policy *policy)
+{
+ return cpufreq_frequency_table_verify(policy,
+ &loongson2_clockmod_table[0]);
+}
+
+static int loongson2_cpufreq_exit(struct cpufreq_policy *policy)
+{
+ clk_put(cpuclk);
+ return 0;
+}
+
+static struct freq_attr *loongson2_table_attr[] = {
+ &cpufreq_freq_attr_scaling_available_freqs,
+ NULL,
+};
+
+static struct cpufreq_driver loongson2_cpufreq_driver = {
+ .owner = THIS_MODULE,
+ .name = "loongson2",
+ .init = loongson2_cpufreq_cpu_init,
+ .verify = loongson2_cpufreq_verify,
+ .target = loongson2_cpufreq_target,
+ .get = loongson2_cpufreq_get,
+ .exit = loongson2_cpufreq_exit,
+ .attr = loongson2_table_attr,
+};
+
+static struct platform_device_id platform_device_ids[] = {
+ {
+ .name = "loongson2_cpufreq",
+ },
+ {}
+};
+
+MODULE_DEVICE_TABLE(platform, platform_device_ids);
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = "loongson2_cpufreq",
+ .owner = THIS_MODULE,
+ },
+ .id_table = platform_device_ids,
+};
+
+/*
+ * This is the simple version of Loongson-2 wait, Maybe we need do this in
+ * interrupt disabled context.
+ */
+
+static DEFINE_SPINLOCK(loongson2_wait_lock);
+
+static void loongson2_cpu_wait(void)
+{
+ unsigned long flags;
+ u32 cpu_freq;
+
+ spin_lock_irqsave(&loongson2_wait_lock, flags);
+ cpu_freq = LOONGSON_CHIPCFG0;
+ LOONGSON_CHIPCFG0 &= ~0x7; /* Put CPU into wait mode */
+ LOONGSON_CHIPCFG0 = cpu_freq; /* Restore CPU state */
+ spin_unlock_irqrestore(&loongson2_wait_lock, flags);
+}
+
+static int __init cpufreq_init(void)
+{
+ int ret;
+
+ /* Register platform stuff */
+ ret = platform_driver_register(&platform_driver);
+ if (ret)
+ return ret;
+
+ pr_info("cpufreq: Loongson-2F CPU frequency driver.\n");
+
+ cpufreq_register_notifier(&loongson2_cpufreq_notifier_block,
+ CPUFREQ_TRANSITION_NOTIFIER);
+
+ ret = cpufreq_register_driver(&loongson2_cpufreq_driver);
+
+ if (!ret && !nowait) {
+ saved_cpu_wait = cpu_wait;
+ cpu_wait = loongson2_cpu_wait;
+ }
+
+ return ret;
+}
+
+static void __exit cpufreq_exit(void)
+{
+ if (!nowait && saved_cpu_wait)
+ cpu_wait = saved_cpu_wait;
+ cpufreq_unregister_driver(&loongson2_cpufreq_driver);
+ cpufreq_unregister_notifier(&loongson2_cpufreq_notifier_block,
+ CPUFREQ_TRANSITION_NOTIFIER);
+
+ platform_driver_unregister(&platform_driver);
+}
+
+module_init(cpufreq_init);
+module_exit(cpufreq_exit);
+
+module_param(nowait, uint, 0644);
+MODULE_PARM_DESC(nowait, "Disable Loongson-2F specific wait");
+
+MODULE_AUTHOR("Yanhua <yanh@lemote.com>");
+MODULE_DESCRIPTION("cpufreq driver for Loongson2F");
+MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff