#include <linux/export.h>
#include <linux/slab.h>
-static struct clk *cpuclk;
static struct cpufreq_frequency_table *freq_table;
-static unsigned int at32_get_speed(unsigned int cpu)
-{
- /* No SMP support */
- if (cpu)
- return 0;
- return (unsigned int)((clk_get_rate(cpuclk) + 500) / 1000);
-}
-
static unsigned int ref_freq;
static unsigned long loops_per_jiffy_ref;
{
unsigned int old_freq, new_freq;
- old_freq = at32_get_speed(0);
+ old_freq = policy->cur;
new_freq = freq_table[index].frequency;
if (!ref_freq) {
if (old_freq < new_freq)
boot_cpu_data.loops_per_jiffy = cpufreq_scale(
loops_per_jiffy_ref, ref_freq, new_freq);
- clk_set_rate(cpuclk, new_freq * 1000);
+ clk_set_rate(policy->clk, new_freq * 1000);
if (new_freq < old_freq)
boot_cpu_data.loops_per_jiffy = cpufreq_scale(
loops_per_jiffy_ref, ref_freq, new_freq);
static int at32_cpufreq_driver_init(struct cpufreq_policy *policy)
{
unsigned int frequency, rate, min_freq;
+ static struct clk *cpuclk;
int retval, steps, i;
if (policy->cpu != 0)
frequency /= 2;
}
+ policy->clk = cpuclk;
freq_table[steps - 1].frequency = CPUFREQ_TABLE_END;
retval = cpufreq_table_validate_and_show(policy, freq_table);
.init = at32_cpufreq_driver_init,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = at32_set_target,
- .get = at32_get_speed,
+ .get = cpufreq_generic_get,
.flags = CPUFREQ_STICKY,
};
static struct regulator *cpu_reg;
static struct cpufreq_frequency_table *freq_table;
-static unsigned int cpu0_get_speed(unsigned int cpu)
-{
- return clk_get_rate(cpu_clk) / 1000;
-}
-
static int cpu0_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct dev_pm_opp *opp;
static int cpu0_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = cpu_clk;
return cpufreq_generic_init(policy, freq_table, transition_latency);
}
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cpu0_set_target,
- .get = cpu0_get_speed,
+ .get = cpufreq_generic_get,
.init = cpu0_cpufreq_init,
.exit = cpufreq_generic_exit,
.name = "generic_cpu0",
}
EXPORT_SYMBOL_GPL(cpufreq_generic_init);
+unsigned int cpufreq_generic_get(unsigned int cpu)
+{
+ struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);
+
+ if (!policy || IS_ERR(policy->clk)) {
+ pr_err("%s: No %s associated to cpu: %d\n", __func__,
+ policy ? "clk" : "policy", cpu);
+ return 0;
+ }
+
+ return clk_get_rate(policy->clk) / 1000;
+}
+EXPORT_SYMBOL_GPL(cpufreq_generic_get);
+
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
{
struct cpufreq_policy *policy = NULL;
goto err_set_policy_cpu;
}
+ write_lock_irqsave(&cpufreq_driver_lock, flags);
+ for_each_cpu(j, policy->cpus)
+ per_cpu(cpufreq_cpu_data, j) = policy;
+ write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+
if (cpufreq_driver->get) {
policy->cur = cpufreq_driver->get(policy->cpu);
if (!policy->cur) {
}
#endif
- write_lock_irqsave(&cpufreq_driver_lock, flags);
- for_each_cpu(j, policy->cpus)
- per_cpu(cpufreq_cpu_data, j) = policy;
- write_unlock_irqrestore(&cpufreq_driver_lock, flags);
-
if (!frozen) {
ret = cpufreq_add_dev_interface(policy, dev);
if (ret)
return 0;
err_out_unregister:
+err_get_freq:
write_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_cpu(j, policy->cpus)
per_cpu(cpufreq_cpu_data, j) = NULL;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
-err_get_freq:
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
err_set_policy_cpu:
return 0;
}
-static unsigned int davinci_getspeed(unsigned int cpu)
-{
- if (cpu)
- return 0;
-
- return clk_get_rate(cpufreq.armclk) / 1000;
-}
-
static int davinci_target(struct cpufreq_policy *policy, unsigned int idx)
{
struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
unsigned int old_freq, new_freq;
int ret = 0;
- old_freq = davinci_getspeed(0);
+ old_freq = policy->cur;
new_freq = pdata->freq_table[idx].frequency;
/* if moving to higher frequency, up the voltage beforehand */
return result;
}
+ policy->clk = cpufreq.armclk;
+
/*
* Time measurement across the target() function yields ~1500-1800us
* time taken with no drivers on notification list.
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = davinci_verify_speed,
.target_index = davinci_target,
- .get = davinci_getspeed,
+ .get = cpufreq_generic_get,
.init = davinci_cpu_init,
.exit = cpufreq_generic_exit,
.name = "davinci",
return clk_set_rate(armss_clk, freq_table[index].frequency * 1000);
}
-static unsigned int dbx500_cpufreq_getspeed(unsigned int cpu)
-{
- int i = 0;
- unsigned long freq = clk_get_rate(armss_clk) / 1000;
-
- /* The value is rounded to closest frequency in the defined table. */
- while (freq_table[i + 1].frequency != CPUFREQ_TABLE_END) {
- if (freq < freq_table[i].frequency +
- (freq_table[i + 1].frequency - freq_table[i].frequency) / 2)
- return freq_table[i].frequency;
- i++;
- }
-
- return freq_table[i].frequency;
-}
-
static int dbx500_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = armss_clk;
return cpufreq_generic_init(policy, freq_table, 20 * 1000);
}
CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = dbx500_cpufreq_target,
- .get = dbx500_cpufreq_getspeed,
+ .get = cpufreq_generic_get,
.init = dbx500_cpufreq_init,
.name = "DBX500",
.attr = cpufreq_generic_attr,
static bool frequency_locked;
static DEFINE_MUTEX(cpufreq_lock);
-static unsigned int exynos_getspeed(unsigned int cpu)
-{
- return clk_get_rate(exynos_info->cpu_clk) / 1000;
-}
-
static int exynos_cpufreq_get_index(unsigned int freq)
{
struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
+ policy->clk = exynos_info->cpu_clk;
return cpufreq_generic_init(policy, exynos_info->freq_table, 100000);
}
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = exynos_target,
- .get = exynos_getspeed,
+ .get = cpufreq_generic_get,
.init = exynos_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "exynos_cpufreq",
goto err_vdd_arm;
}
- locking_frequency = exynos_getspeed(0);
+ locking_frequency = clk_get_rate(exynos_info->cpu_clk) / 1000;
register_pm_notifier(&exynos_cpufreq_nb);
struct resource *mem;
int irq;
struct clk *cpu_clk;
- unsigned int cur_frequency;
unsigned int latency;
struct cpufreq_frequency_table *freq_table;
unsigned int freq_count;
return 0;
}
-static void exynos_enable_dvfs(void)
+static void exynos_enable_dvfs(unsigned int cur_frequency)
{
unsigned int tmp, i, cpu;
struct cpufreq_frequency_table *freq_table = dvfs_info->freq_table;
/* Set initial performance index */
for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++)
- if (freq_table[i].frequency == dvfs_info->cur_frequency)
+ if (freq_table[i].frequency == cur_frequency)
break;
if (freq_table[i].frequency == CPUFREQ_TABLE_END) {
dev_crit(dvfs_info->dev, "Boot up frequency not supported\n");
/* Assign the highest frequency */
i = 0;
- dvfs_info->cur_frequency = freq_table[i].frequency;
+ cur_frequency = freq_table[i].frequency;
}
dev_info(dvfs_info->dev, "Setting dvfs initial frequency = %uKHZ",
- dvfs_info->cur_frequency);
+ cur_frequency);
for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++) {
tmp = __raw_readl(dvfs_info->base + XMU_C0_3_PSTATE + cpu * 4);
dvfs_info->base + XMU_DVFS_CTRL);
}
-static unsigned int exynos_getspeed(unsigned int cpu)
-{
- return dvfs_info->cur_frequency;
-}
-
static int exynos_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int tmp;
mutex_lock(&cpufreq_lock);
- freqs.old = dvfs_info->cur_frequency;
+ freqs.old = policy->cur;
freqs.new = freq_table[index].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
goto skip_work;
mutex_lock(&cpufreq_lock);
- freqs.old = dvfs_info->cur_frequency;
+ freqs.old = policy->cur;
cur_pstate = __raw_readl(dvfs_info->base + XMU_P_STATUS);
if (cur_pstate >> C0_3_PSTATE_VALID_SHIFT & 0x1)
if (likely(index < dvfs_info->freq_count)) {
freqs.new = freq_table[index].frequency;
- dvfs_info->cur_frequency = freqs.new;
} else {
dev_crit(dvfs_info->dev, "New frequency out of range\n");
- freqs.new = dvfs_info->cur_frequency;
+ freqs.new = freqs.old;
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
+ policy->clk = dvfs_info->cpu_clk;
return cpufreq_generic_init(policy, dvfs_info->freq_table,
dvfs_info->latency);
}
CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = exynos_target,
- .get = exynos_getspeed,
+ .get = cpufreq_generic_get,
.init = exynos_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = CPUFREQ_NAME,
int ret = -EINVAL;
struct device_node *np;
struct resource res;
+ unsigned int cur_frequency;
np = pdev->dev.of_node;
if (!np)
goto err_free_table;
}
- dvfs_info->cur_frequency = clk_get_rate(dvfs_info->cpu_clk);
- if (!dvfs_info->cur_frequency) {
+ cur_frequency = clk_get_rate(dvfs_info->cpu_clk);
+ if (!cur_frequency) {
dev_err(dvfs_info->dev, "Failed to get clock rate\n");
ret = -EINVAL;
goto err_free_table;
}
- dvfs_info->cur_frequency /= 1000;
+ cur_frequency /= 1000;
INIT_WORK(&dvfs_info->irq_work, exynos_cpufreq_work);
ret = devm_request_irq(dvfs_info->dev, dvfs_info->irq,
goto err_free_table;
}
- exynos_enable_dvfs();
+ exynos_enable_dvfs(cur_frequency);
ret = cpufreq_register_driver(&exynos_driver);
if (ret) {
dev_err(dvfs_info->dev,
static u32 *imx6_soc_volt;
static u32 soc_opp_count;
-static unsigned int imx6q_get_speed(unsigned int cpu)
-{
- return clk_get_rate(arm_clk) / 1000;
-}
-
static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct dev_pm_opp *opp;
static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = arm_clk;
return cpufreq_generic_init(policy, freq_table, transition_latency);
}
.flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = imx6q_set_target,
- .get = imx6q_get_speed,
+ .get = cpufreq_generic_get,
.init = imx6q_cpufreq_init,
.exit = cpufreq_generic_exit,
.name = "imx6q-cpufreq",
static uint nowait;
-static struct clk *cpuclk;
-
static void (*saved_cpu_wait) (void);
static int loongson2_cpu_freq_notifier(struct notifier_block *nb,
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.
*/
set_cpus_allowed_ptr(current, &cpus_allowed);
/* setting the cpu frequency */
- clk_set_rate(cpuclk, freq);
+ clk_set_rate(policy->clk, freq);
return 0;
}
static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
+ static struct clk *cpuclk;
int i;
unsigned long rate;
int ret;
return ret;
}
+ policy->clk = cpuclk;
return cpufreq_generic_init(policy, &loongson2_clockmod_table[0], 0);
}
static int loongson2_cpufreq_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
- clk_put(cpuclk);
+ clk_put(policy->clk);
return 0;
}
.init = loongson2_cpufreq_cpu_init,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = loongson2_cpufreq_target,
- .get = loongson2_cpufreq_get,
+ .get = cpufreq_generic_get,
.exit = loongson2_cpufreq_exit,
.attr = cpufreq_generic_attr,
};
static struct cpufreq_frequency_table *freq_table;
static atomic_t freq_table_users = ATOMIC_INIT(0);
-static struct clk *mpu_clk;
static struct device *mpu_dev;
static struct regulator *mpu_reg;
-static unsigned int omap_getspeed(unsigned int cpu)
-{
- unsigned long rate;
-
- if (cpu >= NR_CPUS)
- return 0;
-
- rate = clk_get_rate(mpu_clk) / 1000;
- return rate;
-}
-
static int omap_target(struct cpufreq_policy *policy, unsigned int index)
{
int r, ret;
unsigned long freq, volt = 0, volt_old = 0, tol = 0;
unsigned int old_freq, new_freq;
- old_freq = omap_getspeed(policy->cpu);
+ old_freq = policy->cur;
new_freq = freq_table[index].frequency;
freq = new_freq * 1000;
- ret = clk_round_rate(mpu_clk, freq);
+ ret = clk_round_rate(policy->clk, freq);
if (IS_ERR_VALUE(ret)) {
dev_warn(mpu_dev,
"CPUfreq: Cannot find matching frequency for %lu\n",
}
}
- ret = clk_set_rate(mpu_clk, new_freq * 1000);
+ ret = clk_set_rate(policy->clk, new_freq * 1000);
/* scaling down? scale voltage after frequency */
if (mpu_reg && (new_freq < old_freq)) {
if (r < 0) {
dev_warn(mpu_dev, "%s: unable to scale voltage down.\n",
__func__);
- clk_set_rate(mpu_clk, old_freq * 1000);
+ clk_set_rate(policy->clk, old_freq * 1000);
return r;
}
}
{
int result;
- mpu_clk = clk_get(NULL, "cpufreq_ck");
- if (IS_ERR(mpu_clk))
- return PTR_ERR(mpu_clk);
+ policy->clk = clk_get(NULL, "cpufreq_ck");
+ if (IS_ERR(policy->clk))
+ return PTR_ERR(policy->clk);
if (!freq_table) {
result = dev_pm_opp_init_cpufreq_table(mpu_dev, &freq_table);
freq_table_free();
fail:
- clk_put(mpu_clk);
+ clk_put(policy->clk);
return result;
}
{
cpufreq_frequency_table_put_attr(policy->cpu);
freq_table_free();
- clk_put(mpu_clk);
+ clk_put(policy->clk);
return 0;
}
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = omap_target,
- .get = omap_getspeed,
+ .get = cpufreq_generic_get,
.init = omap_cpu_init,
.exit = omap_cpu_exit,
.name = "omap",
/**
* struct cpu_data - per CPU data struct
- * @clk: the clk of CPU
* @parent: the parent node of cpu clock
* @table: frequency table
*/
struct cpu_data {
- struct clk *clk;
struct device_node *parent;
struct cpufreq_frequency_table *table;
};
}
#endif
-static unsigned int corenet_cpufreq_get_speed(unsigned int cpu)
-{
- struct cpu_data *data = per_cpu(cpu_data, cpu);
-
- return clk_get_rate(data->clk) / 1000;
-}
-
/* reduce the duplicated frequencies in frequency table */
static void freq_table_redup(struct cpufreq_frequency_table *freq_table,
int count)
goto err_np;
}
- data->clk = of_clk_get(np, 0);
- if (IS_ERR(data->clk)) {
+ policy->clk = of_clk_get(np, 0);
+ if (IS_ERR(policy->clk)) {
pr_err("%s: no clock information\n", __func__);
goto err_nomem2;
}
struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
parent = of_clk_get(data->parent, data->table[index].driver_data);
- return clk_set_parent(data->clk, parent);
+ return clk_set_parent(policy->clk, parent);
}
static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
.exit = __exit_p(corenet_cpufreq_cpu_exit),
.verify = cpufreq_generic_frequency_table_verify,
.target_index = corenet_cpufreq_target,
- .get = corenet_cpufreq_get_speed,
+ .get = cpufreq_generic_get,
.attr = cpufreq_generic_attr,
};
return -EINVAL;
}
-static unsigned int s3c_cpufreq_get(unsigned int cpu)
-{
- return clk_get_rate(clk_arm) / 1000;
-}
-
struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
{
struct clk *clk;
static int s3c_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = clk_arm;
return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
}
{
suspend_pll.frequency = clk_get_rate(_clk_mpll);
suspend_pll.driver_data = __raw_readl(S3C2410_MPLLCON);
- suspend_freq = s3c_cpufreq_get(0) * 1000;
+ suspend_freq = clk_get_rate(clk_arm);
return 0;
}
static struct cpufreq_driver s3c24xx_driver = {
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.target = s3c_cpufreq_target,
- .get = s3c_cpufreq_get,
+ .get = cpufreq_generic_get,
.init = s3c_cpufreq_init,
.suspend = s3c_cpufreq_suspend,
.resume = s3c_cpufreq_resume,
#include <linux/regulator/consumer.h>
#include <linux/module.h>
-static struct clk *armclk;
static struct regulator *vddarm;
static unsigned long regulator_latency;
};
#endif
-static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
-{
- if (cpu != 0)
- return 0;
-
- return clk_get_rate(armclk) / 1000;
-}
-
static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int index)
{
unsigned int old_freq, new_freq;
int ret;
- old_freq = clk_get_rate(armclk) / 1000;
+ old_freq = clk_get_rate(policy->clk) / 1000;
new_freq = s3c64xx_freq_table[index].frequency;
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[index].driver_data];
}
#endif
- ret = clk_set_rate(armclk, new_freq * 1000);
+ ret = clk_set_rate(policy->clk, new_freq * 1000);
if (ret < 0) {
pr_err("Failed to set rate %dkHz: %d\n",
new_freq, ret);
if (ret != 0) {
pr_err("Failed to set VDDARM for %dkHz: %d\n",
new_freq, ret);
- if (clk_set_rate(armclk, old_freq * 1000) < 0)
+ if (clk_set_rate(policy->clk, old_freq * 1000) < 0)
pr_err("Failed to restore original clock rate\n");
return ret;
#endif
pr_debug("Set actual frequency %lukHz\n",
- clk_get_rate(armclk) / 1000);
+ clk_get_rate(policy->clk) / 1000);
return 0;
}
return -ENODEV;
}
- armclk = clk_get(NULL, "armclk");
- if (IS_ERR(armclk)) {
+ policy->clk = clk_get(NULL, "armclk");
+ if (IS_ERR(policy->clk)) {
pr_err("Unable to obtain ARMCLK: %ld\n",
- PTR_ERR(armclk));
- return PTR_ERR(armclk);
+ PTR_ERR(policy->clk));
+ return PTR_ERR(policy->clk);
}
#ifdef CONFIG_REGULATOR
unsigned long r;
/* Check for frequencies we can generate */
- r = clk_round_rate(armclk, freq->frequency * 1000);
+ r = clk_round_rate(policy->clk, freq->frequency * 1000);
r /= 1000;
if (r != freq->frequency) {
pr_debug("%dkHz unsupported by clock\n",
/* If we have no regulator then assume startup
* frequency is the maximum we can support. */
- if (!vddarm && freq->frequency > s3c64xx_cpufreq_get_speed(0))
+ if (!vddarm && freq->frequency > clk_get_rate(policy->clk) / 1000)
freq->frequency = CPUFREQ_ENTRY_INVALID;
freq++;
pr_err("Failed to configure frequency table: %d\n",
ret);
regulator_put(vddarm);
- clk_put(armclk);
+ clk_put(policy->clk);
}
return ret;
.flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s3c64xx_cpufreq_set_target,
- .get = s3c64xx_cpufreq_get_speed,
+ .get = cpufreq_generic_get,
.init = s3c64xx_cpufreq_driver_init,
.name = "s3c",
};
#include <mach/map.h>
#include <mach/regs-clock.h>
-static struct clk *cpu_clk;
static struct clk *dmc0_clk;
static struct clk *dmc1_clk;
static DEFINE_MUTEX(set_freq_lock);
__raw_writel(tmp1, reg);
}
-static unsigned int s5pv210_getspeed(unsigned int cpu)
-{
- if (cpu)
- return 0;
-
- return clk_get_rate(cpu_clk) / 1000;
-}
-
static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned long reg;
goto exit;
}
- old_freq = s5pv210_getspeed(0);
+ old_freq = policy->cur;
new_freq = s5pv210_freq_table[index].frequency;
/* Finding current running level index */
unsigned long mem_type;
int ret;
- cpu_clk = clk_get(NULL, "armclk");
- if (IS_ERR(cpu_clk))
- return PTR_ERR(cpu_clk);
+ policy->clk = clk_get(NULL, "armclk");
+ if (IS_ERR(policy->clk))
+ return PTR_ERR(policy->clk);
dmc0_clk = clk_get(NULL, "sclk_dmc0");
if (IS_ERR(dmc0_clk)) {
out_dmc1:
clk_put(dmc0_clk);
out_dmc0:
- clk_put(cpu_clk);
+ clk_put(policy->clk);
return ret;
}
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s5pv210_target,
- .get = s5pv210_getspeed,
+ .get = cpufreq_generic_get,
.init = s5pv210_cpu_init,
.name = "s5pv210",
#ifdef CONFIG_PM
u32 cnt;
} spear_cpufreq;
-static unsigned int spear_cpufreq_get(unsigned int cpu)
-{
- return clk_get_rate(spear_cpufreq.clk) / 1000;
-}
-
static struct clk *spear1340_cpu_get_possible_parent(unsigned long newfreq)
{
struct clk *sys_pclk;
static int spear_cpufreq_init(struct cpufreq_policy *policy)
{
+ policy->clk = spear_cpufreq.clk;
return cpufreq_generic_init(policy, spear_cpufreq.freq_tbl,
spear_cpufreq.transition_latency);
}
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = spear_cpufreq_target,
- .get = spear_cpufreq_get,
+ .get = cpufreq_generic_get,
.init = spear_cpufreq_init,
.exit = cpufreq_generic_exit,
.attr = cpufreq_generic_attr,
static struct clk *pll_p_clk;
static struct clk *emc_clk;
-static unsigned long target_cpu_speed[NUM_CPUS];
static DEFINE_MUTEX(tegra_cpu_lock);
static bool is_suspended;
-static unsigned int tegra_getspeed(unsigned int cpu)
-{
- unsigned long rate;
-
- if (cpu >= NUM_CPUS)
- return 0;
-
- rate = clk_get_rate(cpu_clk) / 1000;
- return rate;
-}
-
static int tegra_cpu_clk_set_rate(unsigned long rate)
{
int ret;
{
int ret = 0;
- if (tegra_getspeed(0) == rate)
- return ret;
-
/*
* Vote on memory bus frequency based on cpu frequency
* This sets the minimum frequency, display or avp may request higher
return ret;
}
-static unsigned long tegra_cpu_highest_speed(void)
-{
- unsigned long rate = 0;
- int i;
-
- for_each_online_cpu(i)
- rate = max(rate, target_cpu_speed[i]);
- return rate;
-}
-
static int tegra_target(struct cpufreq_policy *policy, unsigned int index)
{
- unsigned int freq;
- int ret = 0;
+ int ret = -EBUSY;
mutex_lock(&tegra_cpu_lock);
- if (is_suspended)
- goto out;
-
- freq = freq_table[index].frequency;
+ if (!is_suspended)
+ ret = tegra_update_cpu_speed(policy,
+ freq_table[index].frequency);
- target_cpu_speed[policy->cpu] = freq;
-
- ret = tegra_update_cpu_speed(policy, tegra_cpu_highest_speed());
-
-out:
mutex_unlock(&tegra_cpu_lock);
return ret;
}
is_suspended = true;
pr_info("Tegra cpufreq suspend: setting frequency to %d kHz\n",
freq_table[0].frequency);
- tegra_update_cpu_speed(policy, freq_table[0].frequency);
+ if (clk_get_rate(cpu_clk) / 1000 != freq_table[0].frequency)
+ tegra_update_cpu_speed(policy, freq_table[0].frequency);
cpufreq_cpu_put(policy);
} else if (event == PM_POST_SUSPEND) {
is_suspended = false;
clk_prepare_enable(emc_clk);
clk_prepare_enable(cpu_clk);
- target_cpu_speed[policy->cpu] = tegra_getspeed(policy->cpu);
-
/* FIXME: what's the actual transition time? */
ret = cpufreq_generic_init(policy, freq_table, 300 * 1000);
if (ret) {
if (policy->cpu == 0)
register_pm_notifier(&tegra_cpu_pm_notifier);
+ policy->clk = cpu_clk;
return 0;
}
.flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = tegra_target,
- .get = tegra_getspeed,
+ .get = cpufreq_generic_get,
.init = tegra_cpu_init,
.exit = tegra_cpu_exit,
.name = "tegra",
* published by the Free Software Foundation.
*/
+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
return 0;
}
-static unsigned int ucv2_getspeed(unsigned int cpu)
-{
- struct clk *mclk = clk_get(NULL, "MAIN_CLK");
-
- if (cpu)
- return 0;
- return clk_get_rate(mclk)/1000;
-}
-
static int ucv2_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
struct cpufreq_freqs freqs;
- struct clk *mclk = clk_get(NULL, "MAIN_CLK");
int ret;
freqs.old = policy->cur;
freqs.new = target_freq;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
- ret = clk_set_rate(mclk, target_freq * 1000);
+ ret = clk_set_rate(policy->mclk, target_freq * 1000);
cpufreq_notify_post_transition(policy, &freqs, ret);
return ret;
{
if (policy->cpu != 0)
return -EINVAL;
+
policy->min = policy->cpuinfo.min_freq = 250000;
policy->max = policy->cpuinfo.max_freq = 1000000;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+ policy->clk = clk_get(NULL, "MAIN_CLK");
+ if (IS_ERR(policy->clk))
+ return PTR_ERR(policy->clk);
return 0;
}
.flags = CPUFREQ_STICKY,
.verify = ucv2_verify_speed,
.target = ucv2_target,
- .get = ucv2_getspeed,
+ .get = cpufreq_generic_get,
.init = ucv2_cpu_init,
.name = "UniCore-II",
};
#ifndef _LINUX_CPUFREQ_H
#define _LINUX_CPUFREQ_H
+#include <linux/clk.h>
#include <linux/cpumask.h>
#include <linux/completion.h>
#include <linux/kobject.h>
unsigned int cpu; /* cpu nr of CPU managing this policy */
unsigned int last_cpu; /* cpu nr of previous CPU that managed
* this policy */
+ struct clk *clk;
struct cpufreq_cpuinfo cpuinfo;/* see above */
unsigned int min; /* in kHz */
int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
+unsigned int cpufreq_generic_get(unsigned int cpu);
int cpufreq_generic_init(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table,
unsigned int transition_latency);
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff