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path: root/drivers/cpufreq/e_powersaver.c
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Diffstat (limited to 'drivers/cpufreq/e_powersaver.c')
-rw-r--r--drivers/cpufreq/e_powersaver.c73
1 files changed, 16 insertions, 57 deletions
diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
index 3fffbe6025c..a0d2a423cea 100644
--- a/drivers/cpufreq/e_powersaver.c
+++ b/drivers/cpufreq/e_powersaver.c
@@ -54,7 +54,7 @@ static struct acpi_processor_performance *eps_acpi_cpu_perf;
/* Minimum necessary to get acpi_processor_get_bios_limit() working */
static int eps_acpi_init(void)
{
- eps_acpi_cpu_perf = kzalloc(sizeof(struct acpi_processor_performance),
+ eps_acpi_cpu_perf = kzalloc(sizeof(*eps_acpi_cpu_perf),
GFP_KERNEL);
if (!eps_acpi_cpu_perf)
return -ENOMEM;
@@ -104,19 +104,12 @@ static unsigned int eps_get(unsigned int cpu)
}
static int eps_set_state(struct eps_cpu_data *centaur,
- unsigned int cpu,
+ struct cpufreq_policy *policy,
u32 dest_state)
{
- struct cpufreq_freqs freqs;
u32 lo, hi;
- int err = 0;
int i;
- freqs.old = eps_get(cpu);
- freqs.new = centaur->fsb * ((dest_state >> 8) & 0xff);
- freqs.cpu = cpu;
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
/* Wait while CPU is busy */
rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
i = 0;
@@ -125,8 +118,7 @@ static int eps_set_state(struct eps_cpu_data *centaur,
rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
i++;
if (unlikely(i > 64)) {
- err = -ENODEV;
- goto postchange;
+ return -ENODEV;
}
}
/* Set new multiplier and voltage */
@@ -138,16 +130,10 @@ static int eps_set_state(struct eps_cpu_data *centaur,
rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
i++;
if (unlikely(i > 64)) {
- err = -ENODEV;
- goto postchange;
+ return -ENODEV;
}
} while (lo & ((1 << 16) | (1 << 17)));
- /* Return current frequency */
-postchange:
- rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
- freqs.new = centaur->fsb * ((lo >> 8) & 0xff);
-
#ifdef DEBUG
{
u8 current_multiplier, current_voltage;
@@ -162,16 +148,12 @@ postchange:
current_multiplier);
}
#endif
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
- return err;
+ return 0;
}
-static int eps_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
+static int eps_target(struct cpufreq_policy *policy, unsigned int index)
{
struct eps_cpu_data *centaur;
- unsigned int newstate = 0;
unsigned int cpu = policy->cpu;
unsigned int dest_state;
int ret;
@@ -180,28 +162,14 @@ static int eps_target(struct cpufreq_policy *policy,
return -ENODEV;
centaur = eps_cpu[cpu];
- if (unlikely(cpufreq_frequency_table_target(policy,
- &eps_cpu[cpu]->freq_table[0],
- target_freq,
- relation,
- &newstate))) {
- return -EINVAL;
- }
-
/* Make frequency transition */
- dest_state = centaur->freq_table[newstate].index & 0xffff;
- ret = eps_set_state(centaur, cpu, dest_state);
+ dest_state = centaur->freq_table[index].driver_data & 0xffff;
+ ret = eps_set_state(centaur, policy, dest_state);
if (ret)
printk(KERN_ERR "eps: Timeout!\n");
return ret;
}
-static int eps_verify(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy,
- &eps_cpu[policy->cpu]->freq_table[0]);
-}
-
static int eps_cpu_init(struct cpufreq_policy *policy)
{
unsigned int i;
@@ -364,7 +332,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
states = 2;
/* Allocate private data and frequency table for current cpu */
- centaur = kzalloc(sizeof(struct eps_cpu_data)
+ centaur = kzalloc(sizeof(*centaur)
+ (states + 1) * sizeof(struct cpufreq_frequency_table),
GFP_KERNEL);
if (!centaur)
@@ -381,9 +349,9 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
f_table = &centaur->freq_table[0];
if (brand != EPS_BRAND_C7M) {
f_table[0].frequency = fsb * min_multiplier;
- f_table[0].index = (min_multiplier << 8) | min_voltage;
+ f_table[0].driver_data = (min_multiplier << 8) | min_voltage;
f_table[1].frequency = fsb * max_multiplier;
- f_table[1].index = (max_multiplier << 8) | max_voltage;
+ f_table[1].driver_data = (max_multiplier << 8) | max_voltage;
f_table[2].frequency = CPUFREQ_TABLE_END;
} else {
k = 0;
@@ -392,22 +360,20 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
for (i = min_multiplier; i <= max_multiplier; i++) {
voltage = (k * step) / 256 + min_voltage;
f_table[k].frequency = fsb * i;
- f_table[k].index = (i << 8) | voltage;
+ f_table[k].driver_data = (i << 8) | voltage;
k++;
}
f_table[k].frequency = CPUFREQ_TABLE_END;
}
policy->cpuinfo.transition_latency = 140000; /* 844mV -> 700mV in ns */
- policy->cur = fsb * current_multiplier;
- ret = cpufreq_frequency_table_cpuinfo(policy, &centaur->freq_table[0]);
+ ret = cpufreq_table_validate_and_show(policy, &centaur->freq_table[0]);
if (ret) {
kfree(centaur);
return ret;
}
- cpufreq_frequency_table_get_attr(&centaur->freq_table[0], policy->cpu);
return 0;
}
@@ -416,26 +382,19 @@ static int eps_cpu_exit(struct cpufreq_policy *policy)
unsigned int cpu = policy->cpu;
/* Bye */
- cpufreq_frequency_table_put_attr(policy->cpu);
kfree(eps_cpu[cpu]);
eps_cpu[cpu] = NULL;
return 0;
}
-static struct freq_attr *eps_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
static struct cpufreq_driver eps_driver = {
- .verify = eps_verify,
- .target = eps_target,
+ .verify = cpufreq_generic_frequency_table_verify,
+ .target_index = eps_target,
.init = eps_cpu_init,
.exit = eps_cpu_exit,
.get = eps_get,
.name = "e_powersaver",
- .owner = THIS_MODULE,
- .attr = eps_attr,
+ .attr = cpufreq_generic_attr,
};