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-rw-r--r--arch/mips/kernel/cpufreq/Kconfig41
-rw-r--r--arch/mips/kernel/cpufreq/Makefile5
-rw-r--r--arch/mips/kernel/cpufreq/loongson2_clock.c170
-rw-r--r--arch/mips/kernel/cpufreq/loongson2_cpufreq.c227
4 files changed, 0 insertions, 443 deletions
diff --git a/arch/mips/kernel/cpufreq/Kconfig b/arch/mips/kernel/cpufreq/Kconfig
deleted file mode 100644
index 58c601eee6f..00000000000
--- a/arch/mips/kernel/cpufreq/Kconfig
+++ /dev/null
@@ -1,41 +0,0 @@
-#
-# 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
diff --git a/arch/mips/kernel/cpufreq/Makefile b/arch/mips/kernel/cpufreq/Makefile
deleted file mode 100644
index c3479a432ef..00000000000
--- a/arch/mips/kernel/cpufreq/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# Makefile for the Linux/MIPS cpufreq.
-#
-
-obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o loongson2_clock.o
diff --git a/arch/mips/kernel/cpufreq/loongson2_clock.c b/arch/mips/kernel/cpufreq/loongson2_clock.c
deleted file mode 100644
index cefc6e259ba..00000000000
--- a/arch/mips/kernel/cpufreq/loongson2_clock.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * 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/platform_device.h>
-
-#include <asm/clock.h>
-
-#include <loongson.h>
-
-static LIST_HEAD(clock_list);
-static DEFINE_SPINLOCK(clock_lock);
-static DEFINE_MUTEX(clock_list_sem);
-
-/* Minimum CLK support */
-enum {
- DC_ZERO, DC_25PT = 2, DC_37PT, DC_50PT, DC_62PT, DC_75PT,
- DC_87PT, DC_DISABLE, DC_RESV
-};
-
-struct cpufreq_frequency_table loongson2_clockmod_table[] = {
- {DC_RESV, CPUFREQ_ENTRY_INVALID},
- {DC_ZERO, CPUFREQ_ENTRY_INVALID},
- {DC_25PT, 0},
- {DC_37PT, 0},
- {DC_50PT, 0},
- {DC_62PT, 0},
- {DC_75PT, 0},
- {DC_87PT, 0},
- {DC_DISABLE, 0},
- {DC_RESV, CPUFREQ_TABLE_END},
-};
-EXPORT_SYMBOL_GPL(loongson2_clockmod_table);
-
-static struct clk cpu_clk = {
- .name = "cpu_clk",
- .flags = CLK_ALWAYS_ENABLED | CLK_RATE_PROPAGATES,
- .rate = 800000000,
-};
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- return &cpu_clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-static void propagate_rate(struct clk *clk)
-{
- struct clk *clkp;
-
- list_for_each_entry(clkp, &clock_list, node) {
- if (likely(clkp->parent != clk))
- continue;
- if (likely(clkp->ops && clkp->ops->recalc))
- clkp->ops->recalc(clkp);
- if (unlikely(clkp->flags & CLK_RATE_PROPAGATES))
- propagate_rate(clkp);
- }
-}
-
-int clk_enable(struct clk *clk)
-{
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
- return (unsigned long)clk->rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
- return clk_set_rate_ex(clk, rate, 0);
-}
-EXPORT_SYMBOL_GPL(clk_set_rate);
-
-int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
-{
- int ret = 0;
- int regval;
- int i;
-
- if (likely(clk->ops && clk->ops->set_rate)) {
- unsigned long flags;
-
- spin_lock_irqsave(&clock_lock, flags);
- ret = clk->ops->set_rate(clk, rate, algo_id);
- spin_unlock_irqrestore(&clock_lock, flags);
- }
-
- if (unlikely(clk->flags & CLK_RATE_PROPAGATES))
- propagate_rate(clk);
-
- for (i = 0; loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END;
- i++) {
- if (loongson2_clockmod_table[i].frequency ==
- CPUFREQ_ENTRY_INVALID)
- continue;
- if (rate == loongson2_clockmod_table[i].frequency)
- break;
- }
- if (rate != loongson2_clockmod_table[i].frequency)
- return -ENOTSUPP;
-
- clk->rate = rate;
-
- regval = LOONGSON_CHIPCFG0;
- regval = (regval & ~0x7) | (loongson2_clockmod_table[i].index - 1);
- LOONGSON_CHIPCFG0 = regval;
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(clk_set_rate_ex);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
- if (likely(clk->ops && clk->ops->round_rate)) {
- unsigned long flags, rounded;
-
- spin_lock_irqsave(&clock_lock, flags);
- rounded = clk->ops->round_rate(clk, rate);
- spin_unlock_irqrestore(&clock_lock, flags);
-
- return rounded;
- }
-
- return rate;
-}
-EXPORT_SYMBOL_GPL(clk_round_rate);
-
-/*
- * This is the simple version of Loongson-2 wait, Maybe we need do this in
- * interrupt disabled content
- */
-
-DEFINE_SPINLOCK(loongson2_wait_lock);
-void loongson2_cpu_wait(void)
-{
- u32 cpu_freq;
- unsigned long flags;
-
- 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);
-}
-EXPORT_SYMBOL_GPL(loongson2_cpu_wait);
-
-MODULE_AUTHOR("Yanhua <yanh@lemote.com>");
-MODULE_DESCRIPTION("cpufreq driver for Loongson 2F");
-MODULE_LICENSE("GPL");
diff --git a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c b/arch/mips/kernel/cpufreq/loongson2_cpufreq.c
deleted file mode 100644
index ae5db206347..00000000000
--- a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * 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 <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;
-
- if (!cpu_online(cpu))
- return -ENODEV;
-
- 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.cpu = cpu;
- freqs.old = loongson2_cpufreq_get(cpu);
- freqs.new = freq;
- freqs.flags = 0;
-
- if (freqs.new == freqs.old)
- return 0;
-
- /* notifiers */
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
- set_cpus_allowed_ptr(current, &cpus_allowed);
-
- /* setting the cpu frequency */
- clk_set_rate(cpuclk, freq);
-
- /* notifiers */
- cpufreq_notify_transition(&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;
-
- if (!cpu_online(policy->cpu))
- return -ENODEV;
-
- cpuclk = clk_get(NULL, "cpu_clk");
- if (IS_ERR(cpuclk)) {
- printk(KERN_ERR "cpufreq: couldn't get CPU clk\n");
- return PTR_ERR(cpuclk);
- }
-
- cpuclk->rate = cpu_clock_freq / 1000;
- if (!cpuclk->rate)
- return -EINVAL;
-
- /* clock table init */
- for (i = 2;
- (loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END);
- i++)
- loongson2_clockmod_table[i].frequency = (cpuclk->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,
-};
-
-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");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 20:23:21 +0000