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-rw-r--r--drivers/cpufreq/cpufreq.c74
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c11
-rw-r--r--drivers/cpufreq/freq_table.c12
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c35
-rw-r--r--drivers/cpufreq/intel_pstate.c131
-rw-r--r--drivers/cpufreq/loongson2_cpufreq.c6
-rw-r--r--drivers/cpufreq/powernow-k6.c1
-rw-r--r--drivers/cpufreq/powernv-cpufreq.c18
-rw-r--r--drivers/cpufreq/s3c2410-cpufreq.c2
-rw-r--r--drivers/cpufreq/s3c2412-cpufreq.c3
-rw-r--r--drivers/cpufreq/s3c2440-cpufreq.c3
-rw-r--r--drivers/cpufreq/s3c24xx-cpufreq.c1
-rw-r--r--drivers/cpufreq/s5pv210-cpufreq.c131
13 files changed, 267 insertions, 161 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6f02485..d9fdedd 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1076,10 +1076,20 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
kfree(policy);
}
-static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
+static int update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu,
+ struct device *cpu_dev)
{
+ int ret;
+
if (WARN_ON(cpu == policy->cpu))
- return;
+ return 0;
+
+ /* Move kobject to the new policy->cpu */
+ ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
+ if (ret) {
+ pr_err("%s: Failed to move kobj: %d\n", __func__, ret);
+ return ret;
+ }
down_write(&policy->rwsem);
@@ -1090,6 +1100,8 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_UPDATE_POLICY_CPU, policy);
+
+ return 0;
}
static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
@@ -1153,12 +1165,10 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
* the creation of a brand new one. So we need to perform this update
* by invoking update_policy_cpu().
*/
- if (recover_policy && cpu != policy->cpu) {
- update_policy_cpu(policy, cpu);
- WARN_ON(kobject_move(&policy->kobj, &dev->kobj));
- } else {
+ if (recover_policy && cpu != policy->cpu)
+ WARN_ON(update_policy_cpu(policy, cpu, dev));
+ else
policy->cpu = cpu;
- }
cpumask_copy(policy->cpus, cpumask_of(cpu));
@@ -1309,38 +1319,11 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
return __cpufreq_add_dev(dev, sif);
}
-static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
- unsigned int old_cpu)
-{
- struct device *cpu_dev;
- int ret;
-
- /* first sibling now owns the new sysfs dir */
- cpu_dev = get_cpu_device(cpumask_any_but(policy->cpus, old_cpu));
-
- sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
- ret = kobject_move(&policy->kobj, &cpu_dev->kobj);
- if (ret) {
- pr_err("%s: Failed to move kobj: %d\n", __func__, ret);
-
- down_write(&policy->rwsem);
- cpumask_set_cpu(old_cpu, policy->cpus);
- up_write(&policy->rwsem);
-
- ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
- "cpufreq");
-
- return -EINVAL;
- }
-
- return cpu_dev->id;
-}
-
static int __cpufreq_remove_dev_prepare(struct device *dev,
struct subsys_interface *sif)
{
unsigned int cpu = dev->id, cpus;
- int new_cpu, ret;
+ int ret;
unsigned long flags;
struct cpufreq_policy *policy;
@@ -1380,14 +1363,23 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
if (cpu != policy->cpu) {
sysfs_remove_link(&dev->kobj, "cpufreq");
} else if (cpus > 1) {
- new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu);
- if (new_cpu >= 0) {
- update_policy_cpu(policy, new_cpu);
+ /* Nominate new CPU */
+ int new_cpu = cpumask_any_but(policy->cpus, cpu);
+ struct device *cpu_dev = get_cpu_device(new_cpu);
- if (!cpufreq_suspended)
- pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
- __func__, new_cpu, cpu);
+ sysfs_remove_link(&cpu_dev->kobj, "cpufreq");
+ ret = update_policy_cpu(policy, new_cpu, cpu_dev);
+ if (ret) {
+ if (sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
+ "cpufreq"))
+ pr_err("%s: Failed to restore kobj link to cpu:%d\n",
+ __func__, cpu_dev->id);
+ return ret;
}
+
+ if (!cpufreq_suspended)
+ pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
+ __func__, new_cpu, cpu);
} else if (cpufreq_driver->stop_cpu && cpufreq_driver->setpolicy) {
cpufreq_driver->stop_cpu(policy);
}
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 18d4091..ad3f38f 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -170,21 +170,24 @@ static void od_check_cpu(int cpu, unsigned int load)
dbs_freq_increase(policy, policy->max);
} else {
/* Calculate the next frequency proportional to load */
- unsigned int freq_next;
- freq_next = load * policy->cpuinfo.max_freq / 100;
+ unsigned int freq_next, min_f, max_f;
+
+ min_f = policy->cpuinfo.min_freq;
+ max_f = policy->cpuinfo.max_freq;
+ freq_next = min_f + load * (max_f - min_f) / 100;
/* No longer fully busy, reset rate_mult */
dbs_info->rate_mult = 1;
if (!od_tuners->powersave_bias) {
__cpufreq_driver_target(policy, freq_next,
- CPUFREQ_RELATION_L);
+ CPUFREQ_RELATION_C);
return;
}
freq_next = od_ops.powersave_bias_target(policy, freq_next,
CPUFREQ_RELATION_L);
- __cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
+ __cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_C);
}
}
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index 1632981..df14766 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -117,7 +117,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
.frequency = 0,
};
struct cpufreq_frequency_table *pos;
- unsigned int freq, i = 0;
+ unsigned int freq, diff, i = 0;
pr_debug("request for target %u kHz (relation: %u) for cpu %u\n",
target_freq, relation, policy->cpu);
@@ -127,6 +127,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
suboptimal.frequency = ~0;
break;
case CPUFREQ_RELATION_L:
+ case CPUFREQ_RELATION_C:
optimal.frequency = ~0;
break;
}
@@ -168,6 +169,15 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
}
}
break;
+ case CPUFREQ_RELATION_C:
+ diff = abs(freq - target_freq);
+ if (diff < optimal.frequency ||
+ (diff == optimal.frequency &&
+ freq > table[optimal.driver_data].frequency)) {
+ optimal.frequency = diff;
+ optimal.driver_data = i;
+ }
+ break;
}
}
if (optimal.driver_data > i) {
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index af366c2..c2d3076 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -66,10 +66,12 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
/* scaling up? scale voltage before frequency */
if (new_freq > old_freq) {
- ret = regulator_set_voltage_tol(pu_reg, imx6_soc_volt[index], 0);
- if (ret) {
- dev_err(cpu_dev, "failed to scale vddpu up: %d\n", ret);
- return ret;
+ if (!IS_ERR(pu_reg)) {
+ ret = regulator_set_voltage_tol(pu_reg, imx6_soc_volt[index], 0);
+ if (ret) {
+ dev_err(cpu_dev, "failed to scale vddpu up: %d\n", ret);
+ return ret;
+ }
}
ret = regulator_set_voltage_tol(soc_reg, imx6_soc_volt[index], 0);
if (ret) {
@@ -121,10 +123,12 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
dev_warn(cpu_dev, "failed to scale vddsoc down: %d\n", ret);
ret = 0;
}
- ret = regulator_set_voltage_tol(pu_reg, imx6_soc_volt[index], 0);
- if (ret) {
- dev_warn(cpu_dev, "failed to scale vddpu down: %d\n", ret);
- ret = 0;
+ if (!IS_ERR(pu_reg)) {
+ ret = regulator_set_voltage_tol(pu_reg, imx6_soc_volt[index], 0);
+ if (ret) {
+ dev_warn(cpu_dev, "failed to scale vddpu down: %d\n", ret);
+ ret = 0;
+ }
}
}
@@ -182,9 +186,9 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
}
arm_reg = regulator_get(cpu_dev, "arm");
- pu_reg = regulator_get(cpu_dev, "pu");
+ pu_reg = regulator_get_optional(cpu_dev, "pu");
soc_reg = regulator_get(cpu_dev, "soc");
- if (IS_ERR(arm_reg) || IS_ERR(pu_reg) || IS_ERR(soc_reg)) {
+ if (IS_ERR(arm_reg) || IS_ERR(soc_reg)) {
dev_err(cpu_dev, "failed to get regulators\n");
ret = -ENOENT;
goto put_reg;
@@ -268,9 +272,11 @@ soc_opp_out:
ret = regulator_set_voltage_time(soc_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);
if (ret > 0)
transition_latency += ret * 1000;
- ret = regulator_set_voltage_time(pu_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);
- if (ret > 0)
- transition_latency += ret * 1000;
+ if (!IS_ERR(pu_reg)) {
+ ret = regulator_set_voltage_time(pu_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);
+ if (ret > 0)
+ transition_latency += ret * 1000;
+ }
/*
* OPP is maintained in order of increasing frequency, and
@@ -327,7 +333,8 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
cpufreq_unregister_driver(&imx6q_cpufreq_driver);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
regulator_put(arm_reg);
- regulator_put(pu_reg);
+ if (!IS_ERR(pu_reg))
+ regulator_put(pu_reg);
regulator_put(soc_reg);
clk_put(arm_clk);
clk_put(pll1_sys_clk);
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 86631cb..c5eac94 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -37,7 +37,6 @@
#define BYT_TURBO_RATIOS 0x66c
#define BYT_TURBO_VIDS 0x66d
-
#define FRAC_BITS 8
#define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
#define fp_toint(X) ((X) >> FRAC_BITS)
@@ -50,7 +49,7 @@ static inline int32_t mul_fp(int32_t x, int32_t y)
static inline int32_t div_fp(int32_t x, int32_t y)
{
- return div_s64((int64_t)x << FRAC_BITS, (int64_t)y);
+ return div_s64((int64_t)x << FRAC_BITS, y);
}
struct sample {
@@ -148,7 +147,7 @@ static struct perf_limits limits = {
};
static inline void pid_reset(struct _pid *pid, int setpoint, int busy,
- int deadband, int integral) {
+ int deadband, int integral) {
pid->setpoint = setpoint;
pid->deadband = deadband;
pid->integral = int_tofp(integral);
@@ -167,7 +166,6 @@ static inline void pid_i_gain_set(struct _pid *pid, int percent)
static inline void pid_d_gain_set(struct _pid *pid, int percent)
{
-
pid->d_gain = div_fp(int_tofp(percent), int_tofp(100));
}
@@ -207,16 +205,13 @@ static inline void intel_pstate_busy_pid_reset(struct cpudata *cpu)
pid_d_gain_set(&cpu->pid, pid_params.d_gain_pct);
pid_i_gain_set(&cpu->pid, pid_params.i_gain_pct);
- pid_reset(&cpu->pid,
- pid_params.setpoint,
- 100,
- pid_params.deadband,
- 0);
+ pid_reset(&cpu->pid, pid_params.setpoint, 100, pid_params.deadband, 0);
}
static inline void intel_pstate_reset_all_pid(void)
{
unsigned int cpu;
+
for_each_online_cpu(cpu) {
if (all_cpu_data[cpu])
intel_pstate_busy_pid_reset(all_cpu_data[cpu]);
@@ -230,13 +225,13 @@ static int pid_param_set(void *data, u64 val)
intel_pstate_reset_all_pid();
return 0;
}
+
static int pid_param_get(void *data, u64 *val)
{
*val = *(u32 *)data;
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(fops_pid_param, pid_param_get,
- pid_param_set, "%llu\n");
+DEFINE_SIMPLE_ATTRIBUTE(fops_pid_param, pid_param_get, pid_param_set, "%llu\n");
struct pid_param {
char *name;
@@ -253,9 +248,9 @@ static struct pid_param pid_files[] = {
{NULL, NULL}
};
-static struct dentry *debugfs_parent;
-static void intel_pstate_debug_expose_params(void)
+static void __init intel_pstate_debug_expose_params(void)
{
+ struct dentry *debugfs_parent;
int i = 0;
debugfs_parent = debugfs_create_dir("pstate_snb", NULL);
@@ -263,8 +258,8 @@ static void intel_pstate_debug_expose_params(void)
return;
while (pid_files[i].name) {
debugfs_create_file(pid_files[i].name, 0660,
- debugfs_parent, pid_files[i].value,
- &fops_pid_param);
+ debugfs_parent, pid_files[i].value,
+ &fops_pid_param);
i++;
}
}
@@ -280,10 +275,11 @@ static void intel_pstate_debug_expose_params(void)
}
static ssize_t store_no_turbo(struct kobject *a, struct attribute *b,
- const char *buf, size_t count)
+ const char *buf, size_t count)
{
unsigned int input;
int ret;
+
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
@@ -296,10 +292,11 @@ static ssize_t store_no_turbo(struct kobject *a, struct attribute *b,
}
static ssize_t store_max_perf_pct(struct kobject *a, struct attribute *b,
- const char *buf, size_t count)
+ const char *buf, size_t count)
{
unsigned int input;
int ret;
+
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
@@ -307,14 +304,16 @@ static ssize_t store_max_perf_pct(struct kobject *a, struct attribute *b,
limits.max_sysfs_pct = clamp_t(int, input, 0 , 100);
limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
+
return count;
}
static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b,
- const char *buf, size_t count)
+ const char *buf, size_t count)
{
unsigned int input;
int ret;
+
ret = sscanf(buf, "%u", &input);
if (ret != 1)
return -EINVAL;
@@ -342,17 +341,16 @@ static struct attribute *intel_pstate_attributes[] = {
static struct attribute_group intel_pstate_attr_group = {
.attrs = intel_pstate_attributes,
};
-static struct kobject *intel_pstate_kobject;
-static void intel_pstate_sysfs_expose_params(void)
+static void __init intel_pstate_sysfs_expose_params(void)
{
+ struct kobject *intel_pstate_kobject;
int rc;
intel_pstate_kobject = kobject_create_and_add("intel_pstate",
&cpu_subsys.dev_root->kobj);
BUG_ON(!intel_pstate_kobject);
- rc = sysfs_create_group(intel_pstate_kobject,
- &intel_pstate_attr_group);
+ rc = sysfs_create_group(intel_pstate_kobject, &intel_pstate_attr_group);
BUG_ON(rc);
}
@@ -360,6 +358,7 @@ static void intel_pstate_sysfs_expose_params(void)
static int byt_get_min_pstate(void)
{
u64 value;
+
rdmsrl(BYT_RATIOS, value);
return (value >> 8) & 0x7F;
}
@@ -367,6 +366,7 @@ static int byt_get_min_pstate(void)
static int byt_get_max_pstate(void)
{
u64 value;
+
rdmsrl(BYT_RATIOS, value);
return (value >> 16) & 0x7F;
}
@@ -374,6 +374,7 @@ static int byt_get_max_pstate(void)
static int byt_get_turbo_pstate(void)
{
u64 value;
+
rdmsrl(BYT_TURBO_RATIOS, value);
return value & 0x7F;
}
@@ -407,7 +408,6 @@ static void byt_get_vid(struct cpudata *cpudata)
{
u64 value;
-
rdmsrl(BYT_VIDS, value);
cpudata->vid.min = int_tofp((value >> 8) & 0x7f);
cpudata->vid.max = int_tofp((value >> 16) & 0x7f);
@@ -420,10 +420,10 @@ static void byt_get_vid(struct cpudata *cpudata)
cpudata->vid.turbo = value & 0x7f;
}
-
static int core_get_min_pstate(void)
{
u64 value;
+
rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 40) & 0xFF;
}
@@ -431,6 +431,7 @@ static int core_get_min_pstate(void)
static int core_get_max_pstate(void)
{
u64 value;
+
rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 8) & 0xFF;
}
@@ -439,9 +440,10 @@ static int core_get_turbo_pstate(void)
{
u64 value;
int nont, ret;
+
rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
nont = core_get_max_pstate();
- ret = ((value) & 255);
+ ret = (value) & 255;
if (ret <= nont)
ret = nont;
return ret;
@@ -493,12 +495,12 @@ static struct cpu_defaults byt_params = {
},
};
-
static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
{
int max_perf = cpu->pstate.turbo_pstate;
int max_perf_adj;
int min_perf;
+
if (limits.no_turbo)
max_perf = cpu->pstate.max_pstate;
@@ -507,8 +509,7 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
cpu->pstate.min_pstate, cpu->pstate.turbo_pstate);
min_perf = fp_toint(mul_fp(int_tofp(max_perf), limits.min_perf));
- *min = clamp_t(int, min_perf,
- cpu->pstate.min_pstate, max_perf);
+ *min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
}
static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
@@ -529,21 +530,6 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
pstate_funcs.set(cpu, pstate);
}
-static inline void intel_pstate_pstate_increase(struct cpudata *cpu, int steps)
-{
- int target;
- target = cpu->pstate.current_pstate + steps;
-
- intel_pstate_set_pstate(cpu, target);
-}
-
-static inline void intel_pstate_pstate_decrease(struct cpudata *cpu, int steps)
-{
- int target;
- target = cpu->pstate.current_pstate - steps;
- intel_pstate_set_pstate(cpu, target);
-}
-
static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
{
cpu->pstate.min_pstate = pstate_funcs.get_min();
@@ -559,13 +545,9 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu)
{
struct sample *sample = &cpu->sample;
int64_t core_pct;
- int32_t rem;
core_pct = int_tofp(sample->aperf) * int_tofp(100);
- core_pct = div_u64_rem(core_pct, int_tofp(sample->mperf), &rem);
-
- if ((rem << 1) >= int_tofp(sample->mperf))
- core_pct += 1;
+ core_pct = div64_u64(core_pct, int_tofp(sample->mperf));
sample->freq = fp_toint(
mul_fp(int_tofp(cpu->pstate.max_pstate * 1000), core_pct));
@@ -576,12 +558,12 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu)
static inline void intel_pstate_sample(struct cpudata *cpu)
{
u64 aperf, mperf;
+ unsigned long flags;
+ local_irq_save(flags);
rdmsrl(MSR_IA32_APERF, aperf);
rdmsrl(MSR_IA32_MPERF, mperf);
-
- aperf = aperf >> FRAC_BITS;
- mperf = mperf >> FRAC_BITS;
+ local_irq_restore(flags);
cpu->last_sample_time = cpu->sample.time;
cpu->sample.time = ktime_get();
@@ -598,10 +580,9 @@ static inline void intel_pstate_sample(struct cpudata *cpu)
static inline void intel_pstate_set_sample_time(struct cpudata *cpu)
{
- int sample_time, delay;
+ int delay;
- sample_time = pid_params.sample_rate_ms;
- delay = msecs_to_jiffies(sample_time);
+ delay = msecs_to_jiffies(pid_params.sample_rate_ms);
mod_timer_pinned(&cpu->timer, jiffies + delay);
}
@@ -616,12 +597,12 @@ static inline int32_t intel_pstate_get_scaled_busy(struct cpudata *cpu)
current_pstate = int_tofp(cpu->pstate.current_pstate);
core_busy = mul_fp(core_busy, div_fp(max_pstate, current_pstate));
- sample_time = (pid_params.sample_rate_ms * USEC_PER_MSEC);
+ sample_time = pid_params.sample_rate_ms * USEC_PER_MSEC;
duration_us = (u32) ktime_us_delta(cpu->sample.time,
- cpu->last_sample_time);
+ cpu->last_sample_time);
if (duration_us > sample_time * 3) {
sample_ratio = div_fp(int_tofp(sample_time),
- int_tofp(duration_us));
+ int_tofp(duration_us));
core_busy = mul_fp(core_busy, sample_ratio);
}
@@ -632,20 +613,15 @@ static inline void intel_pstate_adjust_busy_pstate(struct cpudata *cpu)
{
int32_t busy_scaled;
struct _pid *pid;
- signed int ctl = 0;
- int steps;
+ signed int ctl;
pid = &cpu->pid;
busy_scaled = intel_pstate_get_scaled_busy(cpu);
ctl = pid_calc(pid, busy_scaled);
- steps = abs(ctl);
-
- if (ctl < 0)
- intel_pstate_pstate_increase(cpu, steps);
- else
- intel_pstate_pstate_decrease(cpu, steps);
+ /* Negative values of ctl increase the pstate and vice versa */
+ intel_pstate_set_pstate(cpu, cpu->pstate.current_pstate - ctl);
}
static void intel_pstate_timer_func(unsigned long __data)
@@ -705,8 +681,7 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
init_timer_deferrable(&cpu->timer);
cpu->timer.function = intel_pstate_timer_func;
- cpu->timer.data =
- (unsigned long)cpu;
+ cpu->timer.data = (unsigned long)cpu;
cpu->timer.expires = jiffies + HZ/100;
intel_pstate_busy_pid_reset(cpu);
intel_pstate_sample(cpu);
@@ -751,7 +726,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
limits.min_perf_pct = clamp_t(int, limits.min_perf_pct, 0 , 100);
limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100));
- limits.max_policy_pct = policy->max * 100 / policy->cpuinfo.max_freq;
+ limits.max_policy_pct = (policy->max * 100) / policy->cpuinfo.max_freq;
limits.max_policy_pct = clamp_t(int, limits.max_policy_pct, 0 , 100);
limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
@@ -763,8 +738,8 @@ static int intel_pstate_verify_policy(struct cpufreq_policy *policy)
{
cpufreq_verify_within_cpu_limits(policy);
- if ((policy->policy != CPUFREQ_POLICY_POWERSAVE) &&
- (policy->policy != CPUFREQ_POLICY_PERFORMANCE))
+ if (policy->policy != CPUFREQ_POLICY_POWERSAVE &&
+ policy->policy != CPUFREQ_POLICY_PERFORMANCE)
return -EINVAL;
return 0;
@@ -797,7 +772,7 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
if (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ||
- cpu->pstate.max_pstate == cpu->pstate.turbo_pstate) {
+ cpu->pstate.max_pstate == cpu->pstate.turbo_pstate) {
limits.turbo_disabled = 1;
limits.no_turbo = 1;
}
@@ -839,8 +814,8 @@ static int intel_pstate_msrs_not_valid(void)
rdmsrl(MSR_IA32_MPERF, mperf);
if (!pstate_funcs.get_max() ||
- !pstate_funcs.get_min() ||
- !pstate_funcs.get_turbo())
+ !pstate_funcs.get_min() ||
+ !pstate_funcs.get_turbo())
return -ENODEV;
rdmsrl(MSR_IA32_APERF, tmp);
@@ -922,14 +897,14 @@ static bool intel_pstate_platform_pwr_mgmt_exists(void)
struct acpi_table_header hdr;
struct hw_vendor_info *v_info;
- if (acpi_disabled
- || ACPI_FAILURE(acpi_get_table_header(ACPI_SIG_FADT, 0, &hdr)))
+ if (acpi_disabled ||
+ ACPI_FAILURE(acpi_get_table_header(ACPI_SIG_FADT, 0, &hdr)))
return false;
for (v_info = vendor_info; v_info->valid; v_info++) {
- if (!strncmp(hdr.oem_id, v_info->oem_id, ACPI_OEM_ID_SIZE)
- && !strncmp(hdr.oem_table_id, v_info->oem_table_id, ACPI_OEM_TABLE_ID_SIZE)
- && intel_pstate_no_acpi_pss())
+ if (!strncmp(hdr.oem_id, v_info->oem_id, ACPI_OEM_ID_SIZE) &&
+ !strncmp(hdr.oem_table_id, v_info->oem_table_id, ACPI_OEM_TABLE_ID_SIZE) &&
+ intel_pstate_no_acpi_pss())
return true;
}
diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c
index d4add86..9fa1772 100644
--- a/drivers/cpufreq/loongson2_cpufreq.c
+++ b/drivers/cpufreq/loongson2_cpufreq.c
@@ -148,9 +148,9 @@ static void loongson2_cpu_wait(void)
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 */
+ cpu_freq = LOONGSON_CHIPCFG(0);
+ LOONGSON_CHIPCFG(0) &= ~0x7; /* Put CPU into wait mode */
+ LOONGSON_CHIPCFG(0) = cpu_freq; /* Restore CPU state */
spin_unlock_irqrestore(&loongson2_wait_lock, flags);
local_irq_enable();
}
diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
index c8012bc..f910272 100644
--- a/drivers/cpufreq/powernow-k6.c
+++ b/drivers/cpufreq/powernow-k6.c
@@ -55,6 +55,7 @@ static const struct {
unsigned freq;
unsigned mult;
} usual_frequency_table[] = {
+ { 350000, 35 }, // 100 * 3.5
{ 400000, 40 }, // 100 * 4
{ 450000, 45 }, // 100 * 4.5
{ 475000, 50 }, // 95 * 5
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index bb1d08d..379c083 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -28,6 +28,7 @@
#include <linux/of.h>
#include <asm/cputhreads.h>
+#include <asm/firmware.h>
#include <asm/reg.h>
#include <asm/smp.h> /* Required for cpu_sibling_mask() in UP configs */
@@ -98,7 +99,11 @@ static int init_powernv_pstates(void)
return -ENODEV;
}
- WARN_ON(len_ids != len_freqs);
+ if (len_ids != len_freqs) {
+ pr_warn("Entries in ibm,pstate-ids and "
+ "ibm,pstate-frequencies-mhz does not match\n");
+ }
+
nr_pstates = min(len_ids, len_freqs) / sizeof(u32);
if (!nr_pstates) {
pr_warn("No PStates found\n");
@@ -131,7 +136,12 @@ static unsigned int pstate_id_to_freq(int pstate_id)
int i;
i = powernv_pstate_info.max - pstate_id;
- BUG_ON(i >= powernv_pstate_info.nr_pstates || i < 0);
+ if (i >= powernv_pstate_info.nr_pstates || i < 0) {
+ pr_warn("PState id %d outside of PState table, "
+ "reporting nominal id %d instead\n",
+ pstate_id, powernv_pstate_info.nominal);
+ i = powernv_pstate_info.max - powernv_pstate_info.nominal;
+ }
return powernv_freqs[i].frequency;
}
@@ -321,6 +331,10 @@ static int __init powernv_cpufreq_init(void)
{
int rc = 0;
+ /* Don't probe on pseries (guest) platforms */
+ if (!firmware_has_feature(FW_FEATURE_OPALv3))
+ return -ENODEV;
+
/* Discover pstates from device tree and init */
rc = init_powernv_pstates();
if (rc) {
diff --git a/drivers/cpufreq/s3c2410-cpufreq.c b/drivers/cpufreq/s3c2410-cpufreq.c
index cfa0dd8..b8e5da8 100644
--- a/drivers/cpufreq/s3c2410-cpufreq.c
+++ b/drivers/cpufreq/s3c2410-cpufreq.c
@@ -26,7 +26,6 @@
#include <mach/regs-clock.h>
#include <plat/cpu.h>
-#include <plat/clock.h>
#include <plat/cpu-freq-core.h>
/* Note, 2410A has an extra mode for 1:4:4 ratio, bit 2 of CLKDIV */
@@ -104,7 +103,6 @@ static struct s3c_cpufreq_info s3c2410_cpufreq_info = {
.calc_iotiming = s3c2410_iotiming_calc,
.set_iotiming = s3c2410_iotiming_set,
.get_iotiming = s3c2410_iotiming_get,
- .resume_clocks = s3c2410_setup_clocks,
.set_fvco = s3c2410_set_fvco,
.set_refresh = s3c2410_cpufreq_setrefresh,
diff --git a/drivers/cpufreq/s3c2412-cpufreq.c b/drivers/cpufreq/s3c2412-cpufreq.c
index 4645b48..eb26213 100644
--- a/drivers/cpufreq/s3c2412-cpufreq.c
+++ b/drivers/cpufreq/s3c2412-cpufreq.c
@@ -28,7 +28,6 @@
#include <mach/s3c2412.h>
#include <plat/cpu.h>
-#include <plat/clock.h>
#include <plat/cpu-freq-core.h>
/* our clock resources. */
@@ -188,8 +187,6 @@ static struct s3c_cpufreq_info s3c2412_cpufreq_info = {
.set_iotiming = s3c2412_iotiming_set,
.get_iotiming = s3c2412_iotiming_get,
- .resume_clocks = s3c2412_setup_clocks,
-
.debug_io_show = s3c_cpufreq_debugfs_call(s3c2412_iotiming_debugfs),
};
diff --git a/drivers/cpufreq/s3c2440-cpufreq.c b/drivers/cpufreq/s3c2440-cpufreq.c
index f84ed10..0129f5c 100644
--- a/drivers/cpufreq/s3c2440-cpufreq.c
+++ b/drivers/cpufreq/s3c2440-cpufreq.c
@@ -29,7 +29,6 @@
#include <plat/cpu.h>
#include <plat/cpu-freq-core.h>
-#include <plat/clock.h>
static struct clk *xtal;
static struct clk *fclk;
@@ -262,8 +261,6 @@ static struct s3c_cpufreq_info s3c2440_cpufreq_info = {
.calc_divs = s3c2440_cpufreq_calcdivs,
.calc_freqtable = s3c2440_cpufreq_calctable,
- .resume_clocks = s3c244x_setup_clocks,
-
.debug_io_show = s3c_cpufreq_debugfs_call(s3c2410_iotiming_debugfs),
};
diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index 227ebf7..d00f1ce 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -27,7 +27,6 @@
#include <asm/mach/map.h>
#include <plat/cpu.h>
-#include <plat/clock.h>
#include <plat/cpu-freq-core.h>
#include <mach/regs-clock.h>
diff --git a/drivers/cpufreq/s5pv210-cpufreq.c b/drivers/cpufreq/s5pv210-cpufreq.c
index 19a10b8..9a68225 100644
--- a/drivers/cpufreq/s5pv210-cpufreq.c
+++ b/drivers/cpufreq/s5pv210-cpufreq.c
@@ -16,11 +16,70 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/cpufreq.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/regulator/consumer.h>
-#include <mach/map.h>
-#include <mach/regs-clock.h>
+static void __iomem *clk_base;
+static void __iomem *dmc_base[2];
+
+#define S5P_CLKREG(x) (clk_base + (x))
+
+#define S5P_APLL_LOCK S5P_CLKREG(0x00)
+#define S5P_APLL_CON S5P_CLKREG(0x100)
+#define S5P_CLK_SRC0 S5P_CLKREG(0x200)
+#define S5P_CLK_SRC2 S5P_CLKREG(0x208)
+#define S5P_CLK_DIV0 S5P_CLKREG(0x300)
+#define S5P_CLK_DIV2 S5P_CLKREG(0x308)
+#define S5P_CLK_DIV6 S5P_CLKREG(0x318)
+#define S5P_CLKDIV_STAT0 S5P_CLKREG(0x1000)
+#define S5P_CLKDIV_STAT1 S5P_CLKREG(0x1004)
+#define S5P_CLKMUX_STAT0 S5P_CLKREG(0x1100)
+#define S5P_CLKMUX_STAT1 S5P_CLKREG(0x1104)
+
+#define S5P_ARM_MCS_CON S5P_CLKREG(0x6100)
+
+/* CLKSRC0 */
+#define S5P_CLKSRC0_MUX200_SHIFT (16)
+#define S5P_CLKSRC0_MUX200_MASK (0x1 << S5P_CLKSRC0_MUX200_SHIFT)
+#define S5P_CLKSRC0_MUX166_MASK (0x1<<20)
+#define S5P_CLKSRC0_MUX133_MASK (0x1<<24)
+
+/* CLKSRC2 */
+#define S5P_CLKSRC2_G3D_SHIFT (0)
+#define S5P_CLKSRC2_G3D_MASK (0x3 << S5P_CLKSRC2_G3D_SHIFT)
+#define S5P_CLKSRC2_MFC_SHIFT (4)
+#define S5P_CLKSRC2_MFC_MASK (0x3 << S5P_CLKSRC2_MFC_SHIFT)
+
+/* CLKDIV0 */
+#define S5P_CLKDIV0_APLL_SHIFT (0)
+#define S5P_CLKDIV0_APLL_MASK (0x7 << S5P_CLKDIV0_APLL_SHIFT)
+#define S5P_CLKDIV0_A2M_SHIFT (4)
+#define S5P_CLKDIV0_A2M_MASK (0x7 << S5P_CLKDIV0_A2M_SHIFT)
+#define S5P_CLKDIV0_HCLK200_SHIFT (8)
+#define S5P_CLKDIV0_HCLK200_MASK (0x7 << S5P_CLKDIV0_HCLK200_SHIFT)
+#define S5P_CLKDIV0_PCLK100_SHIFT (12)
+#define S5P_CLKDIV0_PCLK100_MASK (0x7 << S5P_CLKDIV0_PCLK100_SHIFT)
+#define S5P_CLKDIV0_HCLK166_SHIFT (16)
+#define S5P_CLKDIV0_HCLK166_MASK (0xF << S5P_CLKDIV0_HCLK166_SHIFT)
+#define S5P_CLKDIV0_PCLK83_SHIFT (20)
+#define S5P_CLKDIV0_PCLK83_MASK (0x7 << S5P_CLKDIV0_PCLK83_SHIFT)
+#define S5P_CLKDIV0_HCLK133_SHIFT (24)
+#define S5P_CLKDIV0_HCLK133_MASK (0xF << S5P_CLKDIV0_HCLK133_SHIFT)
+#define S5P_CLKDIV0_PCLK66_SHIFT (28)
+#define S5P_CLKDIV0_PCLK66_MASK (0x7 << S5P_CLKDIV0_PCLK66_SHIFT)
+
+/* CLKDIV2 */
+#define S5P_CLKDIV2_G3D_SHIFT (0)
+#define S5P_CLKDIV2_G3D_MASK (0xF << S5P_CLKDIV2_G3D_SHIFT)
+#define S5P_CLKDIV2_MFC_SHIFT (4)
+#define S5P_CLKDIV2_MFC_MASK (0xF << S5P_CLKDIV2_MFC_SHIFT)
+
+/* CLKDIV6 */
+#define S5P_CLKDIV6_ONEDRAM_SHIFT (28)
+#define S5P_CLKDIV6_ONEDRAM_MASK (0xF << S5P_CLKDIV6_ONEDRAM_SHIFT)
static struct clk *dmc0_clk;
static struct clk *dmc1_clk;
@@ -142,9 +201,9 @@ static void s5pv210_set_refresh(enum s5pv210_dmc_port ch, unsigned long freq)
void __iomem *reg = NULL;
if (ch == DMC0) {
- reg = (S5P_VA_DMC0 + 0x30);
+ reg = (dmc_base[0] + 0x30);
} else if (ch == DMC1) {
- reg = (S5P_VA_DMC1 + 0x30);
+ reg = (dmc_base[1] + 0x30);
} else {
printk(KERN_ERR "Cannot find DMC port\n");
return;
@@ -472,7 +531,7 @@ static int __init s5pv210_cpu_init(struct cpufreq_policy *policy)
* check_mem_type : This driver only support LPDDR & LPDDR2.
* other memory type is not supported.
*/
- mem_type = check_mem_type(S5P_VA_DMC0);
+ mem_type = check_mem_type(dmc_base[0]);
if ((mem_type != LPDDR) && (mem_type != LPDDR2)) {
printk(KERN_ERR "CPUFreq doesn't support this memory type\n");
@@ -481,10 +540,10 @@ static int __init s5pv210_cpu_init(struct cpufreq_policy *policy)
}
/* Find current refresh counter and frequency each DMC */
- s5pv210_dram_conf[0].refresh = (__raw_readl(S5P_VA_DMC0 + 0x30) * 1000);
+ s5pv210_dram_conf[0].refresh = (__raw_readl(dmc_base[0] + 0x30) * 1000);
s5pv210_dram_conf[0].freq = clk_get_rate(dmc0_clk);
- s5pv210_dram_conf[1].refresh = (__raw_readl(S5P_VA_DMC1 + 0x30) * 1000);
+ s5pv210_dram_conf[1].refresh = (__raw_readl(dmc_base[1] + 0x30) * 1000);
s5pv210_dram_conf[1].freq = clk_get_rate(dmc1_clk);
policy->suspend_freq = SLEEP_FREQ;
@@ -527,8 +586,55 @@ static struct notifier_block s5pv210_cpufreq_reboot_notifier = {
.notifier_call = s5pv210_cpufreq_reboot_notifier_event,
};
-static int __init s5pv210_cpufreq_init(void)
+static int s5pv210_cpufreq_probe(struct platform_device *pdev)
{
+ struct device_node *np;
+ int id;
+
+ /*
+ * HACK: This is a temporary workaround to get access to clock
+ * and DMC controller registers directly and remove static mappings
+ * and dependencies on platform headers. It is necessary to enable
+ * S5PV210 multi-platform support and will be removed together with
+ * this whole driver as soon as S5PV210 gets migrated to use
+ * cpufreq-cpu0 driver.
+ */
+ np = of_find_compatible_node(NULL, NULL, "samsung,s5pv210-clock");
+ if (!np) {
+ pr_err("%s: failed to find clock controller DT node\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ clk_base = of_iomap(np, 0);
+ if (!clk_base) {
+ pr_err("%s: failed to map clock registers\n", __func__);
+ return -EFAULT;
+ }
+
+ for_each_compatible_node(np, NULL, "samsung,s5pv210-dmc") {
+ id = of_alias_get_id(np, "dmc");
+ if (id < 0 || id >= ARRAY_SIZE(dmc_base)) {
+ pr_err("%s: failed to get alias of dmc node '%s'\n",
+ __func__, np->name);
+ return id;
+ }
+
+ dmc_base[id] = of_iomap(np, 0);
+ if (!dmc_base[id]) {
+ pr_err("%s: failed to map dmc%d registers\n",
+ __func__, id);
+ return -EFAULT;
+ }
+ }
+
+ for (id = 0; id < ARRAY_SIZE(dmc_base); ++id) {
+ if (!dmc_base[id]) {
+ pr_err("%s: failed to find dmc%d node\n", __func__, id);
+ return -ENODEV;
+ }
+ }
+
arm_regulator = regulator_get(NULL, "vddarm");
if (IS_ERR(arm_regulator)) {
pr_err("failed to get regulator vddarm");
@@ -547,4 +653,11 @@ static int __init s5pv210_cpufreq_init(void)
return cpufreq_register_driver(&s5pv210_driver);
}
-late_initcall(s5pv210_cpufreq_init);
+static struct platform_driver s5pv210_cpufreq_platdrv = {
+ .driver = {
+ .name = "s5pv210-cpufreq",
+ .owner = THIS_MODULE,
+ },
+ .probe = s5pv210_cpufreq_probe,
+};
+module_platform_driver(s5pv210_cpufreq_platdrv);
generated by cgit v0.10.2 at 2024-08-30 06:30:24 (GMT)