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cpufreq: Implement light weight ->target_index() routine 

Currently, the prototype of cpufreq_drivers target routines is:

int target(struct cpufreq_policy *policy, unsigned int target_freq,
		unsigned int relation);

And most of the drivers call cpufreq_frequency_table_target() to get a valid
index of their frequency table which is closest to the target_freq. And they
don't use target_freq and relation after that.

So, it makes sense to just do this work in cpufreq core before calling
cpufreq_frequency_table_target() and simply pass index instead. But this can be
done only with drivers which expose their frequency table with cpufreq core. For
others we need to stick with the old prototype of target() until those drivers
are converted to expose frequency tables.

This patch implements the new light weight prototype for target_index() routine.
It looks like this:

int target_index(struct cpufreq_policy *policy, unsigned int index);

CPUFreq core will call cpufreq_frequency_table_target() before calling this
routine and pass index to it. Because CPUFreq core now requires to call routines
present in freq_table.c CONFIG_CPU_FREQ_TABLE must be enabled all the time.

This also marks target() interface as deprecated. So, that new drivers avoid
using it. And Documentation is updated accordingly.

It also converts existing .target() to newly defined light weight
.target_index() routine for many driver.

Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Russell King <linux@arm.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@rjwysocki.net>
hifive-unleashed-5.1
Viresh Kumar 2013-10-25 19:45:48 +05:30 committed by Rafael J. Wysocki
parent 6ddee424fe
commit 9c0ebcf78f
50 changed files with 242 additions and 759 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
Documentation/cpu-freq/cpu-drivers.txt
View File

@ -23,8 +23,8 @@ Contents:
1.1 Initialization
1.2 Per-CPU Initialization
1.3 verify
1.4 target or setpolicy?
1.5 target
1.4 target/target_index or setpolicy?
1.5 target/target_index
1.6 setpolicy
2. Frequency Table Helpers
@ -56,7 +56,8 @@ cpufreq_driver.init - A pointer to the per-CPU initialization
cpufreq_driver.verify - A pointer to a "verification" function.
cpufreq_driver.setpolicy _or_
cpufreq_driver.target - See below on the differences.
cpufreq_driver.target/
target_index - See below on the differences.
And optionally
@ -66,7 +67,7 @@ cpufreq_driver.resume - A pointer to a per-CPU resume function
which is called with interrupts disabled
and _before_ the pre-suspend frequency
and/or policy is restored by a call to
->target or ->setpolicy.
->target/target_index or ->setpolicy.
cpufreq_driver.attr - A pointer to a NULL-terminated list of
"struct freq_attr" which allow to
@ -103,8 +104,8 @@ policy->governor must contain the "default policy" for
this CPU. A few moments later,
cpufreq_driver.verify and either
cpufreq_driver.setpolicy or
cpufreq_driver.target is called with
these values.
cpufreq_driver.target/target_index is called
with these values.
For setting some of these values (cpuinfo.min[max]_freq, policy->min[max]), the
frequency table helpers might be helpful. See the section 2 for more information
@ -133,20 +134,28 @@ range) is within policy->min and policy->max. If necessary, increase
policy->max first, and only if this is no solution, decrease policy->min.
1.4 target or setpolicy?
1.4 target/target_index or setpolicy?
----------------------------
Most cpufreq drivers or even most cpu frequency scaling algorithms
only allow the CPU to be set to one frequency. For these, you use the
->target call.
->target/target_index call.
Some cpufreq-capable processors switch the frequency between certain
limits on their own. These shall use the ->setpolicy call
1.4. target
1.4. target/target_index
-------------
The target_index call has two arguments: struct cpufreq_policy *policy,
and unsigned int index (into the exposed frequency table).
The CPUfreq driver must set the new frequency when called here. The
actual frequency must be determined by freq_table[index].frequency.
Deprecated:
----------
The target call has three arguments: struct cpufreq_policy *policy,
unsigned int target_frequency, unsigned int relation.

4
Documentation/cpu-freq/governors.txt
View File

@ -40,7 +40,7 @@ Most cpufreq drivers (in fact, all except one, longrun) or even most
cpu frequency scaling algorithms only offer the CPU to be set to one
frequency. In order to offer dynamic frequency scaling, the cpufreq
core must be able to tell these drivers of a "target frequency". So
these specific drivers will be transformed to offer a "->target"
these specific drivers will be transformed to offer a "->target/target_index"
call instead of the existing "->setpolicy" call. For "longrun", all
stays the same, though.
@ -71,7 +71,7 @@ CPU can be set to switch independently | CPU can only be set
/ the limits of policy->{min,max}
/ \
/ \
Using the ->setpolicy call, Using the ->target call,
Using the ->setpolicy call, Using the ->target/target_index call,
the limits and the the frequency closest
"policy" is set. to target_freq is set.
It is assured that it

20
arch/arm/mach-sa1100/generic.c
View File

@ -62,26 +62,6 @@ struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = {
{ .frequency = CPUFREQ_TABLE_END, },
};
/* rounds up(!) */
unsigned int sa11x0_freq_to_ppcr(unsigned int khz)
{
int i;
for (i = 0; i < NR_FREQS; i++)
if (sa11x0_freq_table[i].frequency >= khz)
break;
return i;
}
unsigned int sa11x0_ppcr_to_freq(unsigned int idx)
{
unsigned int freq = 0;
if (idx < NR_FREQS)
freq = sa11x0_freq_table[idx].frequency;
return freq;
}
unsigned int sa11x0_getspeed(unsigned int cpu)
{
if (cpu)

2
arch/arm/mach-sa1100/generic.h
View File

@ -21,9 +21,7 @@ extern void sa1110_mb_enable(void);
extern void sa1110_mb_disable(void);
extern struct cpufreq_frequency_table sa11x0_freq_table[];
extern unsigned int sa11x0_freq_to_ppcr(unsigned int khz);
extern unsigned int sa11x0_getspeed(unsigned int cpu);
extern unsigned int sa11x0_ppcr_to_freq(unsigned int idx);
struct flash_platform_data;
struct resource;

21
drivers/cpufreq/acpi-cpufreq.c
View File

@ -424,17 +424,17 @@ static unsigned int check_freqs(const struct cpumask *mask, unsigned int freq,
}
static int acpi_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int index)
{
struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
struct acpi_processor_performance *perf;
struct cpufreq_freqs freqs;
struct drv_cmd cmd;
unsigned int next_state = 0; /* Index into freq_table */
unsigned int next_perf_state = 0; /* Index into perf table */
int result = 0;
pr_debug("acpi_cpufreq_target %d (%d)\n", target_freq, policy->cpu);
pr_debug("acpi_cpufreq_target %d (%d)\n",
data->freq_table[index].frequency, policy->cpu);
if (unlikely(data == NULL ||
data->acpi_data == NULL || data->freq_table == NULL)) {
@ -442,16 +442,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
}
perf = data->acpi_data;
result = cpufreq_frequency_table_target(policy,
data->freq_table,
target_freq,
relation, &next_state);
if (unlikely(result)) {
result = -ENODEV;
goto out;
}
next_perf_state = data->freq_table[next_state].driver_data;
next_perf_state = data->freq_table[index].driver_data;
if (perf->state == next_perf_state) {
if (unlikely(data->resume)) {
pr_debug("Called after resume, resetting to P%d\n",
@ -493,7 +484,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
cmd.mask = cpumask_of(policy->cpu);
freqs.old = perf->states[perf->state].core_frequency * 1000;
freqs.new = data->freq_table[next_state].frequency;
freqs.new = data->freq_table[index].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
drv_write(&cmd);
@ -923,7 +914,7 @@ static struct freq_attr *acpi_cpufreq_attr[] = {
static struct cpufreq_driver acpi_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = acpi_cpufreq_target,
.target_index = acpi_cpufreq_target,
.bios_limit = acpi_processor_get_bios_limit,
.init = acpi_cpufreq_cpu_init,
.exit = acpi_cpufreq_cpu_exit,

17
drivers/cpufreq/arm_big_little.c
View File

@ -49,28 +49,21 @@ static unsigned int bL_cpufreq_get(unsigned int cpu)
/* Set clock frequency */
static int bL_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int index)
{
struct cpufreq_freqs freqs;
u32 cpu = policy->cpu, freq_tab_idx, cur_cluster;
u32 cpu = policy->cpu, cur_cluster;
int ret = 0;
cur_cluster = cpu_to_cluster(policy->cpu);
freqs.old = bL_cpufreq_get(policy->cpu);
/* Determine valid target frequency using freq_table */
cpufreq_frequency_table_target(policy, freq_table[cur_cluster],
target_freq, relation, &freq_tab_idx);
freqs.new = freq_table[cur_cluster][freq_tab_idx].frequency;
freqs.new = freq_table[cur_cluster][index].frequency;
pr_debug("%s: cpu: %d, cluster: %d, oldfreq: %d, target freq: %d, new freq: %d\n",
__func__, cpu, cur_cluster, freqs.old, target_freq,
__func__, cpu, cur_cluster, freqs.old, freqs.new,
freqs.new);
if (freqs.old == freqs.new)
return 0;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
ret = clk_set_rate(clk[cur_cluster], freqs.new * 1000);
@ -200,7 +193,7 @@ static struct cpufreq_driver bL_cpufreq_driver = {
.flags = CPUFREQ_STICKY |
CPUFREQ_HAVE_GOVERNOR_PER_POLICY,
.verify = cpufreq_generic_frequency_table_verify,
.target = bL_cpufreq_set_target,
.target_index = bL_cpufreq_set_target,
.get = bL_cpufreq_get,
.init = bL_cpufreq_init,
.exit = bL_cpufreq_exit,

23
drivers/cpufreq/at32ap-cpufreq.c
View File

@ -35,25 +35,12 @@ static unsigned int at32_get_speed(unsigned int cpu)
static unsigned int ref_freq;
static unsigned long loops_per_jiffy_ref;
static int at32_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int at32_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct cpufreq_freqs freqs;
long freq;
/* Convert target_freq from kHz to Hz */
freq = clk_round_rate(cpuclk, target_freq * 1000);
/* Check if policy->min <= new_freq <= policy->max */
if(freq < (policy->min * 1000) || freq > (policy->max * 1000))
return -EINVAL;
pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
freqs.old = at32_get_speed(0);
freqs.new = (freq + 500) / 1000;
freqs.flags = 0;
freqs.new = freq_table[index].frequency;
if (!ref_freq) {
ref_freq = freqs.old;
@ -64,13 +51,13 @@ static int at32_set_target(struct cpufreq_policy *policy,
if (freqs.old < freqs.new)
boot_cpu_data.loops_per_jiffy = cpufreq_scale(
loops_per_jiffy_ref, ref_freq, freqs.new);
clk_set_rate(cpuclk, freq);
clk_set_rate(cpuclk, freqs.new * 1000);
if (freqs.new < freqs.old)
boot_cpu_data.loops_per_jiffy = cpufreq_scale(
loops_per_jiffy_ref, ref_freq, freqs.new);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
pr_debug("cpufreq: set frequency %lu Hz\n", freq);
pr_debug("cpufreq: set frequency %u Hz\n", freqs.new * 1000);
return 0;
}
@ -139,7 +126,7 @@ static struct cpufreq_driver at32_driver = {
.name = "at32ap",
.init = at32_cpufreq_driver_init,
.verify = cpufreq_generic_frequency_table_verify,
.target = at32_set_target,
.target_index = at32_set_target,
.get = at32_get_speed,
.flags = CPUFREQ_STICKY,
};

17
drivers/cpufreq/blackfin-cpufreq.c
View File

@ -127,14 +127,11 @@ unsigned long cpu_set_cclk(int cpu, unsigned long new)
}
#endif
static int bfin_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
static int bfin_target(struct cpufreq_policy *policy, unsigned int index)
{
#ifndef CONFIG_BF60x
unsigned int plldiv;
#endif
unsigned int index;
unsigned long cclk_hz;
struct cpufreq_freqs freqs;
static unsigned long lpj_ref;
static unsigned int lpj_ref_freq;
@ -144,17 +141,11 @@ static int bfin_target(struct cpufreq_policy *policy,
cycles_t cycles;
#endif
if (cpufreq_frequency_table_target(policy, bfin_freq_table, target_freq,
relation, &index))
return -EINVAL;
cclk_hz = bfin_freq_table[index].frequency;
freqs.old = bfin_getfreq_khz(0);
freqs.new = cclk_hz;
freqs.new = bfin_freq_table[index].frequency;
pr_debug("cpufreq: changing cclk to %lu; target = %u, oldfreq = %u\n",
cclk_hz, target_freq, freqs.old);
freqs.new, freqs.new, freqs.old);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
#ifndef CONFIG_BF60x
@ -209,7 +200,7 @@ static int __bfin_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver bfin_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = bfin_target,
.target_index = bfin_target,
.get = bfin_getfreq_khz,
.init = __bfin_cpu_init,
.exit = cpufreq_generic_exit,

17
drivers/cpufreq/cpufreq-cpu0.c
View File

@ -35,24 +35,14 @@ 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 target_freq, unsigned int relation)
static int cpu0_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct cpufreq_freqs freqs;
struct dev_pm_opp *opp;
unsigned long volt = 0, volt_old = 0, tol = 0;
long freq_Hz, freq_exact;
unsigned int index;
int ret;
ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &index);
if (ret) {
pr_err("failed to match target freqency %d: %d\n",
target_freq, ret);
return ret;
}
freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000);
if (freq_Hz < 0)
freq_Hz = freq_table[index].frequency * 1000;
@ -60,9 +50,6 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
freqs.new = freq_Hz / 1000;
freqs.old = clk_get_rate(cpu_clk) / 1000;
if (freqs.old == freqs.new)
return 0;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
if (!IS_ERR(cpu_reg)) {
@ -128,7 +115,7 @@ static int cpu0_cpufreq_init(struct cpufreq_policy *policy)
static struct cpufreq_driver cpu0_cpufreq_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = cpu0_set_target,
.target_index = cpu0_set_target,
.get = cpu0_get_speed,
.init = cpu0_cpufreq_init,
.exit = cpufreq_generic_exit,

57
drivers/cpufreq/cpufreq.c
View File

@ -47,6 +47,11 @@ static LIST_HEAD(cpufreq_policy_list);
static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
#endif
static inline bool has_target(void)
{
return cpufreq_driver->target_index || cpufreq_driver->target;
}
/*
* cpu_policy_rwsem is a per CPU reader-writer semaphore designed to cure
* all cpufreq/hotplug/workqueue/etc related lock issues.
@ -392,7 +397,7 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
*policy = CPUFREQ_POLICY_POWERSAVE;
err = 0;
}
} else if (cpufreq_driver->target) {
} else if (has_target()) {
struct cpufreq_governor *t;
mutex_lock(&cpufreq_governor_mutex);
@ -550,7 +555,7 @@ static ssize_t show_scaling_available_governors(struct cpufreq_policy *policy,
ssize_t i = 0;
struct cpufreq_governor *t;
if (!cpufreq_driver->target) {
if (!has_target()) {
i += sprintf(buf, "performance powersave");
goto out;
}
@ -835,7 +840,7 @@ static int cpufreq_add_dev_interface(struct cpufreq_policy *policy,
if (ret)
goto err_out_kobj_put;
}
if (cpufreq_driver->target) {
if (has_target()) {
ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr);
if (ret)
goto err_out_kobj_put;
@ -884,10 +889,10 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
unsigned int cpu, struct device *dev,
bool frozen)
{
int ret = 0, has_target = !!cpufreq_driver->target;
int ret = 0;
unsigned long flags;
if (has_target) {
if (has_target()) {
ret = __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
if (ret) {
pr_err("%s: Failed to stop governor\n", __func__);
@ -905,7 +910,7 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
unlock_policy_rwsem_write(policy->cpu);
if (has_target) {
if (has_target()) {
if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
(ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
pr_err("%s: Failed to start governor\n", __func__);
@ -1215,7 +1220,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
return -EINVAL;
}
if (cpufreq_driver->target) {
if (has_target()) {
ret = __cpufreq_governor(policy, CPUFREQ_GOV_STOP);
if (ret) {
pr_err("%s: Failed to stop governor\n", __func__);
@ -1280,7 +1285,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
/* If cpu is last user of policy, free policy */
if (cpus == 1) {
if (cpufreq_driver->target) {
if (has_target()) {
ret = __cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
if (ret) {
@ -1323,7 +1328,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
if (!frozen)
cpufreq_policy_free(policy);
} else {
if (cpufreq_driver->target) {
if (has_target()) {
if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
(ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
pr_err("%s: Failed to start governor\n",
@ -1694,12 +1699,41 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n",
policy->cpu, target_freq, relation, old_target_freq);
/*
* This might look like a redundant call as we are checking it again
* after finding index. But it is left intentionally for cases where
* exactly same freq is called again and so we can save on few function
* calls.
*/
if (target_freq == policy->cur)
return 0;
if (cpufreq_driver->target)
retval = cpufreq_driver->target(policy, target_freq, relation);
else if (cpufreq_driver->target_index) {
struct cpufreq_frequency_table *freq_table;
int index;
freq_table = cpufreq_frequency_get_table(policy->cpu);
if (unlikely(!freq_table)) {
pr_err("%s: Unable to find freq_table\n", __func__);
goto out;
}
retval = cpufreq_frequency_table_target(policy, freq_table,
target_freq, relation, &index);
if (unlikely(retval)) {
pr_err("%s: Unable to find matching freq\n", __func__);
goto out;
}
if (freq_table[index].frequency == policy->cur)
retval = 0;
else
retval = cpufreq_driver->target_index(policy, index);
}
out:
return retval;
}
EXPORT_SYMBOL_GPL(__cpufreq_driver_target);
@ -2025,7 +2059,7 @@ int cpufreq_update_policy(unsigned int cpu)
pr_debug("Driver did not initialize current freq");
policy->cur = new_policy.cur;
} else {
if (policy->cur != new_policy.cur && cpufreq_driver->target)
if (policy->cur != new_policy.cur && has_target())
cpufreq_out_of_sync(cpu, policy->cur,
new_policy.cur);
}
@ -2103,7 +2137,8 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
return -ENODEV;
if (!driver_data || !driver_data->verify || !driver_data->init ||
((!driver_data->setpolicy) && (!driver_data->target)))
!(driver_data->setpolicy || driver_data->target_index ||
driver_data->target))
return -EINVAL;
pr_debug("trying to register driver %s\n", driver_data->name);

18
drivers/cpufreq/cris-artpec3-cpufreq.c
View File

@ -27,8 +27,7 @@ static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
return clk_ctrl.pll ? 200000 : 6000;
}
static void cris_freq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int state)
static int cris_freq_target(struct cpufreq_policy *policy, unsigned int state)
{
struct cpufreq_freqs freqs;
reg_clkgen_rw_clk_ctrl clk_ctrl;
@ -52,19 +51,6 @@ static void cris_freq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
static int cris_freq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, cris_freq_table,
target_freq, relation, &newstate))
return -EINVAL;
cris_freq_set_cpu_state(policy, newstate);
return 0;
}
@ -77,7 +63,7 @@ static int cris_freq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver cris_freq_driver = {
.get = cris_freq_get_cpu_frequency,
.verify = cpufreq_generic_frequency_table_verify,
.target = cris_freq_target,
.target_index = cris_freq_target,
.init = cris_freq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "cris_freq",

17
drivers/cpufreq/cris-etraxfs-cpufreq.c
View File

@ -27,8 +27,7 @@ static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
return clk_ctrl.pll ? 200000 : 6000;
}
static void cris_freq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int state)
static int cris_freq_target(struct cpufreq_policy *policy, unsigned int state)
{
struct cpufreq_freqs freqs;
reg_config_rw_clk_ctrl clk_ctrl;
@ -52,18 +51,6 @@ static void cris_freq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
static int cris_freq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target
(policy, cris_freq_table, target_freq, relation, &newstate))
return -EINVAL;
cris_freq_set_cpu_state(policy, newstate);
return 0;
}
@ -76,7 +63,7 @@ static int cris_freq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver cris_freq_driver = {
.get = cris_freq_get_cpu_frequency,
.verify = cpufreq_generic_frequency_table_verify,
.target = cris_freq_target,
.target_index = cris_freq_target,
.init = cris_freq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "cris_freq",

16
drivers/cpufreq/davinci-cpufreq.c
View File

@ -66,28 +66,18 @@ static unsigned int davinci_getspeed(unsigned int cpu)
return clk_get_rate(cpufreq.armclk) / 1000;
}
static int davinci_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
static int davinci_target(struct cpufreq_policy *policy, unsigned int idx)
{
int ret = 0;
unsigned int idx;
struct cpufreq_freqs freqs;
struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
struct clk *armclk = cpufreq.armclk;
freqs.old = davinci_getspeed(0);
freqs.new = clk_round_rate(armclk, target_freq * 1000) / 1000;
if (freqs.old == freqs.new)
return ret;
freqs.new = pdata->freq_table[idx].frequency;
dev_dbg(cpufreq.dev, "transition: %u --> %u\n", freqs.old, freqs.new);
ret = cpufreq_frequency_table_target(policy, pdata->freq_table,
freqs.new, relation, &idx);
if (ret)
return -EINVAL;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* if moving to higher frequency, up the voltage beforehand */
@ -148,7 +138,7 @@ static int davinci_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver davinci_driver = {
.flags = CPUFREQ_STICKY,
.verify = davinci_verify_speed,
.target = davinci_target,
.target_index = davinci_target,
.get = davinci_getspeed,
.init = davinci_cpu_init,
.exit = cpufreq_generic_exit,

16
drivers/cpufreq/dbx500-cpufreq.c
View File

@ -20,23 +20,13 @@ static struct cpufreq_frequency_table *freq_table;
static struct clk *armss_clk;
static int dbx500_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int index)
{
struct cpufreq_freqs freqs;
unsigned int idx;
int ret;
/* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &idx))
return -EINVAL;
freqs.old = policy->cur;
freqs.new = freq_table[idx].frequency;
if (freqs.old == freqs.new)
return 0;
freqs.new = freq_table[index].frequency;
/* pre-change notification */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
@ -80,7 +70,7 @@ static int dbx500_cpufreq_init(struct cpufreq_policy *policy)
static struct cpufreq_driver dbx500_cpufreq_driver = {
.flags = CPUFREQ_STICKY | CPUFREQ_CONST_LOOPS,
.verify = cpufreq_generic_frequency_table_verify,
.target = dbx500_cpufreq_target,
.target_index = dbx500_cpufreq_target,
.get = dbx500_cpufreq_getspeed,
.init = dbx500_cpufreq_init,
.name = "DBX500",

17
drivers/cpufreq/e_powersaver.c
View File

@ -168,12 +168,9 @@ postchange:
return err;
}
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;
@ -182,16 +179,8 @@ 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].driver_data & 0xffff;
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");
@ -418,7 +407,7 @@ static int eps_cpu_exit(struct cpufreq_policy *policy)
static struct cpufreq_driver eps_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = eps_target,
.target_index = eps_target,
.init = eps_cpu_init,
.exit = eps_cpu_exit,
.get = eps_get,

34
drivers/cpufreq/elanfreq.c
View File

@ -105,20 +105,8 @@ static unsigned int elanfreq_get_cpu_frequency(unsigned int cpu)
}
/**
* elanfreq_set_cpu_frequency: Change the CPU core frequency
* @cpu: cpu number
* @freq: frequency in kHz
*
* This function takes a frequency value and changes the CPU frequency
* according to this. Note that the frequency has to be checked by
* elanfreq_validatespeed() for correctness!
*
* There is no return value.
*/
static void elanfreq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int state)
static int elanfreq_target(struct cpufreq_policy *policy,
unsigned int state)
{
struct cpufreq_freqs freqs;
@ -162,25 +150,9 @@ static void elanfreq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
static int elanfreq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, &elanfreq_table[0],
target_freq, relation, &newstate))
return -EINVAL;
elanfreq_set_cpu_state(policy, newstate);
return 0;
}
/*
* Module init and exit code
*/
@ -237,7 +209,7 @@ __setup("elanfreq=", elanfreq_setup);
static struct cpufreq_driver elanfreq_driver = {
.get = elanfreq_get_cpu_frequency,
.verify = cpufreq_generic_frequency_table_verify,
.target = elanfreq_target,
.target_index = elanfreq_target,
.init = elanfreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "elanfreq",

21
drivers/cpufreq/exynos-cpufreq.c
View File

@ -65,9 +65,6 @@ static int exynos_cpufreq_scale(unsigned int target_freq)
freqs.old = policy->cur;
freqs.new = target_freq;
if (freqs.new == freqs.old)
goto out;
/*
* The policy max have been changed so that we cannot get proper
* old_index with cpufreq_frequency_table_target(). Thus, ignore
@ -151,13 +148,9 @@ out:
return ret;
}
static int exynos_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int exynos_target(struct cpufreq_policy *policy, unsigned int index)
{
struct cpufreq_frequency_table *freq_table = exynos_info->freq_table;
unsigned int index;
unsigned int new_freq;
int ret = 0;
mutex_lock(&cpufreq_lock);
@ -165,15 +158,7 @@ static int exynos_target(struct cpufreq_policy *policy,
if (frequency_locked)
goto out;
if (cpufreq_frequency_table_target(policy, freq_table,
target_freq, relation, &index)) {
ret = -EINVAL;
goto out;
}
new_freq = freq_table[index].frequency;
ret = exynos_cpufreq_scale(new_freq);
ret = exynos_cpufreq_scale(freq_table[index].frequency);
out:
mutex_unlock(&cpufreq_lock);
@ -247,7 +232,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver exynos_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = exynos_target,
.target_index = exynos_target,
.get = exynos_getspeed,
.init = exynos_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,

21
drivers/cpufreq/exynos5440-cpufreq.c
View File

@ -214,27 +214,17 @@ static unsigned int exynos_getspeed(unsigned int cpu)
return dvfs_info->cur_frequency;
}
static int exynos_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int exynos_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int index, tmp;
int ret = 0, i;
unsigned int tmp;
int i;
struct cpufreq_frequency_table *freq_table = dvfs_info->freq_table;
mutex_lock(&cpufreq_lock);
ret = cpufreq_frequency_table_target(policy, freq_table,
target_freq, relation, &index);
if (ret)
goto out;
freqs.old = dvfs_info->cur_frequency;
freqs.new = freq_table[index].frequency;
if (freqs.old == freqs.new)
goto out;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* Set the target frequency in all C0_3_PSTATE register */
@ -245,9 +235,8 @@ static int exynos_target(struct cpufreq_policy *policy,
__raw_writel(tmp, dvfs_info->base + XMU_C0_3_PSTATE + i * 4);
}
out:
mutex_unlock(&cpufreq_lock);
return ret;
return 0;
}
static void exynos_cpufreq_work(struct work_struct *work)
@ -325,7 +314,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver exynos_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = exynos_target,
.target_index = exynos_target,
.get = exynos_getspeed,
.init = exynos_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,

21
drivers/cpufreq/ia64-acpi-cpufreq.c
View File

@ -227,26 +227,11 @@ acpi_cpufreq_get (
static int
acpi_cpufreq_target (
struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int index)
{
struct cpufreq_acpi_io *data = acpi_io_data[policy->cpu];
unsigned int next_state = 0;
unsigned int result = 0;
pr_debug("acpi_cpufreq_setpolicy\n");
result = cpufreq_frequency_table_target(policy,
data->freq_table, target_freq, relation, &next_state);
if (result)
return (result);
result = processor_set_freq(data, policy, next_state);
return (result);
return processor_set_freq(acpi_io_data[policy->cpu], policy, index);
}
static int
acpi_cpufreq_cpu_init (
struct cpufreq_policy *policy)
@ -379,7 +364,7 @@ acpi_cpufreq_cpu_exit (
static struct cpufreq_driver acpi_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = acpi_cpufreq_target,
.target_index = acpi_cpufreq_target,
.get = acpi_cpufreq_get,
.init = acpi_cpufreq_cpu_init,
.exit = acpi_cpufreq_cpu_exit,

17
drivers/cpufreq/imx6q-cpufreq.c
View File

@ -40,30 +40,17 @@ 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 target_freq, unsigned int relation)
static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct cpufreq_freqs freqs;
struct dev_pm_opp *opp;
unsigned long freq_hz, volt, volt_old;
unsigned int index;
int ret;
ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &index);
if (ret) {
dev_err(cpu_dev, "failed to match target frequency %d: %d\n",
target_freq, ret);
return ret;
}
freqs.new = freq_table[index].frequency;
freq_hz = freqs.new * 1000;
freqs.old = clk_get_rate(arm_clk) / 1000;
if (freqs.old == freqs.new)
return 0;
rcu_read_lock();
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_hz);
if (IS_ERR(opp)) {
@ -159,7 +146,7 @@ static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
static struct cpufreq_driver imx6q_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = imx6q_set_target,
.target_index = imx6q_set_target,
.get = imx6q_get_speed,
.init = imx6q_cpufreq_init,
.exit = cpufreq_generic_exit,

19
drivers/cpufreq/kirkwood-cpufreq.c
View File

@ -55,8 +55,8 @@ static unsigned int kirkwood_cpufreq_get_cpu_frequency(unsigned int cpu)
return kirkwood_freq_table[0].frequency;
}
static void kirkwood_cpufreq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int index)
static int kirkwood_cpufreq_target(struct cpufreq_policy *policy,
unsigned int index)
{
struct cpufreq_freqs freqs;
unsigned int state = kirkwood_freq_table[index].driver_data;
@ -100,19 +100,6 @@ static void kirkwood_cpufreq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
static int kirkwood_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int index = 0;
if (cpufreq_frequency_table_target(policy, kirkwood_freq_table,
target_freq, relation, &index))
return -EINVAL;
kirkwood_cpufreq_set_cpu_state(policy, index);
return 0;
}
@ -126,7 +113,7 @@ static int kirkwood_cpufreq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver kirkwood_cpufreq_driver = {
.get = kirkwood_cpufreq_get_cpu_frequency,
.verify = cpufreq_generic_frequency_table_verify,
.target = kirkwood_cpufreq_target,
.target_index = kirkwood_cpufreq_target,
.init = kirkwood_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "kirkwood-cpufreq",

13
drivers/cpufreq/longhaul.c
View File

@ -626,21 +626,12 @@ static void longhaul_setup_voltagescaling(void)
static int longhaul_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int table_index)
{
unsigned int table_index = 0;
unsigned int i;
unsigned int dir = 0;
u8 vid, current_vid;
if (cpufreq_frequency_table_target(policy, longhaul_table, target_freq,
relation, &table_index))
return -EINVAL;
/* Don't set same frequency again */
if (longhaul_index == table_index)
return 0;
if (!can_scale_voltage)
longhaul_setstate(policy, table_index);
else {
@ -919,7 +910,7 @@ static int longhaul_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver longhaul_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = longhaul_target,
.target_index = longhaul_target,
.get = longhaul_get,
.init = longhaul_cpu_init,
.exit = cpufreq_generic_exit,

21
drivers/cpufreq/loongson2_cpufreq.c
View File

@ -53,11 +53,9 @@ static unsigned int loongson2_cpufreq_get(unsigned int cpu)
* 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 index)
{
unsigned int cpu = policy->cpu;
unsigned int newstate = 0;
cpumask_t cpus_allowed;
struct cpufreq_freqs freqs;
unsigned int freq;
@ -65,26 +63,17 @@ static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
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].driver_data) / 8;
if (freq < policy->min || freq > policy->max)
return -EINVAL;
loongson2_clockmod_table[index].driver_data) / 8;
pr_debug("cpufreq: requested frequency %u Hz\n", target_freq * 1000);
pr_debug("cpufreq: requested frequency %u Hz\n",
loongson2_clockmod_table[index].frequency * 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);
@ -145,7 +134,7 @@ static struct cpufreq_driver loongson2_cpufreq_driver = {
.name = "loongson2",
.init = loongson2_cpufreq_cpu_init,
.verify = cpufreq_generic_frequency_table_verify,
.target = loongson2_cpufreq_target,
.target_index = loongson2_cpufreq_target,
.get = loongson2_cpufreq_get,
.exit = loongson2_cpufreq_exit,
.attr = cpufreq_generic_attr,

16
drivers/cpufreq/maple-cpufreq.c
View File

@ -131,26 +131,18 @@ static int maple_scom_query_freq(void)
*/
static int maple_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int index)
{
unsigned int newstate = 0;
struct cpufreq_freqs freqs;
int rc;
if (cpufreq_frequency_table_target(policy, maple_cpu_freqs,
target_freq, relation, &newstate))
return -EINVAL;
if (maple_pmode_cur == newstate)
return 0;
mutex_lock(&maple_switch_mutex);
freqs.old = maple_cpu_freqs[maple_pmode_cur].frequency;
freqs.new = maple_cpu_freqs[newstate].frequency;
freqs.new = maple_cpu_freqs[index].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
rc = maple_scom_switch_freq(newstate);
rc = maple_scom_switch_freq(index);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
mutex_unlock(&maple_switch_mutex);
@ -173,7 +165,7 @@ static struct cpufreq_driver maple_cpufreq_driver = {
.flags = CPUFREQ_CONST_LOOPS,
.init = maple_cpufreq_cpu_init,
.verify = cpufreq_generic_frequency_table_verify,
.target = maple_cpufreq_target,
.target_index = maple_cpufreq_target,
.get = maple_cpufreq_get_speed,
.attr = cpufreq_generic_attr,
};

31
drivers/cpufreq/omap-cpufreq.c
View File

@ -51,40 +51,15 @@ static unsigned int omap_getspeed(unsigned int cpu)
return rate;
}
static int omap_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int omap_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int i;
int r, ret = 0;
struct cpufreq_freqs freqs;
struct dev_pm_opp *opp;
unsigned long freq, volt = 0, volt_old = 0, tol = 0;
if (!freq_table) {
dev_err(mpu_dev, "%s: cpu%d: no freq table!\n", __func__,
policy->cpu);
return -EINVAL;
}
ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &i);
if (ret) {
dev_dbg(mpu_dev, "%s: cpu%d: no freq match for %d(ret=%d)\n",
__func__, policy->cpu, target_freq, ret);
return ret;
}
freqs.new = freq_table[i].frequency;
if (!freqs.new) {
dev_err(mpu_dev, "%s: cpu%d: no match for freq %d\n", __func__,
policy->cpu, target_freq);
return -EINVAL;
}
freqs.old = omap_getspeed(policy->cpu);
if (freqs.old == freqs.new && policy->cur == freqs.new)
return ret;
freqs.new = freq_table[index].frequency;
freq = freqs.new * 1000;
ret = clk_round_rate(mpu_clk, freq);
@ -200,7 +175,7 @@ static int omap_cpu_exit(struct cpufreq_policy *policy)
static struct cpufreq_driver omap_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = omap_target,
.target_index = omap_target,
.get = omap_getspeed,
.init = omap_cpu_init,
.exit = omap_cpu_exit,

18
drivers/cpufreq/p4-clockmod.c
View File

@ -105,23 +105,13 @@ static struct cpufreq_frequency_table p4clockmod_table[] = {
};
static int cpufreq_p4_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int cpufreq_p4_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int newstate = DC_RESV;
struct cpufreq_freqs freqs;
int i;
if (cpufreq_frequency_table_target(policy, &p4clockmod_table[0],
target_freq, relation, &newstate))
return -EINVAL;
freqs.old = cpufreq_p4_get(policy->cpu);
freqs.new = stock_freq * p4clockmod_table[newstate].driver_data / 8;
if (freqs.new == freqs.old)
return 0;
freqs.new = stock_freq * p4clockmod_table[index].driver_data / 8;
/* notifiers */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
@ -131,7 +121,7 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
* Developer's Manual, Volume 3
*/
for_each_cpu(i, policy->cpus)
cpufreq_p4_setdc(i, p4clockmod_table[newstate].driver_data);
cpufreq_p4_setdc(i, p4clockmod_table[index].driver_data);
/* notifiers */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
@ -255,7 +245,7 @@ static unsigned int cpufreq_p4_get(unsigned int cpu)
static struct cpufreq_driver p4clockmod_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = cpufreq_p4_target,
.target_index = cpufreq_p4_target,
.init = cpufreq_p4_cpu_init,
.exit = cpufreq_generic_exit,
.get = cpufreq_p4_get,

12
drivers/cpufreq/pasemi-cpufreq.c
View File

@ -240,19 +240,11 @@ static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy)
}
static int pas_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int pas_astate_new)
{
struct cpufreq_freqs freqs;
int pas_astate_new;
int i;
cpufreq_frequency_table_target(policy,
pas_freqs,
target_freq,
relation,
&pas_astate_new);
freqs.old = policy->cur;
freqs.new = pas_freqs[pas_astate_new].frequency;
@ -282,7 +274,7 @@ static struct cpufreq_driver pas_cpufreq_driver = {
.init = pas_cpufreq_cpu_init,
.exit = pas_cpufreq_cpu_exit,
.verify = cpufreq_generic_frequency_table_verify,
.target = pas_cpufreq_target,
.target_index = pas_cpufreq_target,
.attr = cpufreq_generic_attr,
};

12
drivers/cpufreq/pmac32-cpufreq.c
View File

@ -374,17 +374,11 @@ static unsigned int pmac_cpufreq_get_speed(unsigned int cpu)
}
static int pmac_cpufreq_target( struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int index)
{
unsigned int newstate = 0;
int rc;
if (cpufreq_frequency_table_target(policy, pmac_cpu_freqs,
target_freq, relation, &newstate))
return -EINVAL;
rc = do_set_cpu_speed(policy, newstate, 1);
rc = do_set_cpu_speed(policy, index, 1);
ppc_proc_freq = cur_freq * 1000ul;
return rc;
@ -453,7 +447,7 @@ static int pmac_cpufreq_resume(struct cpufreq_policy *policy)
static struct cpufreq_driver pmac_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = pmac_cpufreq_target,
.target_index = pmac_cpufreq_target,
.get = pmac_cpufreq_get_speed,
.init = pmac_cpufreq_cpu_init,
.suspend = pmac_cpufreq_suspend,

17
drivers/cpufreq/pmac64-cpufreq.c
View File

@ -312,27 +312,18 @@ static int g5_pfunc_query_freq(void)
* Common interface to the cpufreq core
*/
static int g5_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
static int g5_cpufreq_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int newstate = 0;
struct cpufreq_freqs freqs;
int rc;
if (cpufreq_frequency_table_target(policy, g5_cpu_freqs,
target_freq, relation, &newstate))
return -EINVAL;
if (g5_pmode_cur == newstate)
return 0;
mutex_lock(&g5_switch_mutex);
freqs.old = g5_cpu_freqs[g5_pmode_cur].frequency;
freqs.new = g5_cpu_freqs[newstate].frequency;
freqs.new = g5_cpu_freqs[index].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
rc = g5_switch_freq(newstate);
rc = g5_switch_freq(index);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
mutex_unlock(&g5_switch_mutex);
@ -355,7 +346,7 @@ static struct cpufreq_driver g5_cpufreq_driver = {
.flags = CPUFREQ_CONST_LOOPS,
.init = g5_cpufreq_cpu_init,
.verify = cpufreq_generic_frequency_table_verify,
.target = g5_cpufreq_target,
.target_index = g5_cpufreq_target,
.get = g5_cpufreq_get_speed,
.attr = cpufreq_generic_attr,
};

35
drivers/cpufreq/powernow-k6.c
View File

@ -63,12 +63,12 @@ static int powernow_k6_get_cpu_multiplier(void)
/**
* powernow_k6_set_state - set the PowerNow! multiplier
* powernow_k6_target - set the PowerNow! multiplier
* @best_i: clock_ratio[best_i] is the target multiplier
*
* Tries to change the PowerNow! multiplier
*/
static void powernow_k6_set_state(struct cpufreq_policy *policy,
static int powernow_k6_target(struct cpufreq_policy *policy,
unsigned int best_i)
{
unsigned long outvalue = 0, invalue = 0;
@ -77,7 +77,7 @@ static void powernow_k6_set_state(struct cpufreq_policy *policy,
if (clock_ratio[best_i].driver_data > max_multiplier) {
printk(KERN_ERR PFX "invalid target frequency\n");
return;
return -EINVAL;
}
freqs.old = busfreq * powernow_k6_get_cpu_multiplier();
@ -100,31 +100,6 @@ static void powernow_k6_set_state(struct cpufreq_policy *policy,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return;
}
/**
* powernow_k6_setpolicy - sets a new CPUFreq policy
* @policy: new policy
* @target_freq: the target frequency
* @relation: how that frequency relates to achieved frequency
* (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H)
*
* sets a new CPUFreq policy
*/
static int powernow_k6_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, &clock_ratio[0],
target_freq, relation, &newstate))
return -EINVAL;
powernow_k6_set_state(policy, newstate);
return 0;
}
@ -161,7 +136,7 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy)
unsigned int i;
for (i = 0; i < 8; i++) {
if (i == max_multiplier)
powernow_k6_set_state(policy, i);
powernow_k6_target(policy, i);
}
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
@ -176,7 +151,7 @@ static unsigned int powernow_k6_get(unsigned int cpu)
static struct cpufreq_driver powernow_k6_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = powernow_k6_target,
.target_index = powernow_k6_target,
.init = powernow_k6_cpu_init,
.exit = powernow_k6_cpu_exit,
.get = powernow_k6_get,

22
drivers/cpufreq/powernow-k7.c
View File

@ -248,7 +248,7 @@ static void change_VID(int vid)
}
static void change_speed(struct cpufreq_policy *policy, unsigned int index)
static int powernow_target(struct cpufreq_policy *policy, unsigned int index)
{
u8 fid, vid;
struct cpufreq_freqs freqs;
@ -291,6 +291,8 @@ static void change_speed(struct cpufreq_policy *policy, unsigned int index)
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
}
@ -533,22 +535,6 @@ static int powernow_decode_bios(int maxfid, int startvid)
}
static int powernow_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate;
if (cpufreq_frequency_table_target(policy, powernow_table, target_freq,
relation, &newstate))
return -EINVAL;
change_speed(policy, newstate);
return 0;
}
/*
* We use the fact that the bus frequency is somehow
* a multiple of 100000/3 khz, then we compute sgtc according
@ -694,7 +680,7 @@ static int powernow_cpu_exit(struct cpufreq_policy *policy)
static struct cpufreq_driver powernow_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = powernow_target,
.target_index = powernow_target,
.get = powernow_get,
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
.bios_limit = acpi_processor_get_bios_limit,

24
drivers/cpufreq/powernow-k8.c
View File

@ -977,20 +977,17 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data,
struct powernowk8_target_arg {
struct cpufreq_policy *pol;
unsigned targfreq;
unsigned relation;
unsigned newstate;
};
static long powernowk8_target_fn(void *arg)
{
struct powernowk8_target_arg *pta = arg;
struct cpufreq_policy *pol = pta->pol;
unsigned targfreq = pta->targfreq;
unsigned relation = pta->relation;
unsigned newstate = pta->newstate;
struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
u32 checkfid;
u32 checkvid;
unsigned int newstate;
int ret;
if (!data)
@ -1004,8 +1001,9 @@ static long powernowk8_target_fn(void *arg)
return -EIO;
}
pr_debug("targ: cpu %d, %d kHz, min %d, max %d, relation %d\n",
pol->cpu, targfreq, pol->min, pol->max, relation);
pr_debug("targ: cpu %d, %d kHz, min %d, max %d\n",
pol->cpu, data->powernow_table[newstate].frequency, pol->min,
pol->max);
if (query_current_values_with_pending_wait(data))
return -EIO;
@ -1021,10 +1019,6 @@ static long powernowk8_target_fn(void *arg)
checkvid, data->currvid);
}
if (cpufreq_frequency_table_target(pol, data->powernow_table,
targfreq, relation, &newstate))
return -EIO;
mutex_lock(&fidvid_mutex);
powernow_k8_acpi_pst_values(data, newstate);
@ -1044,11 +1038,9 @@ static long powernowk8_target_fn(void *arg)
}
/* Driver entry point to switch to the target frequency */
static int powernowk8_target(struct cpufreq_policy *pol,
unsigned targfreq, unsigned relation)
static int powernowk8_target(struct cpufreq_policy *pol, unsigned index)
{
struct powernowk8_target_arg pta = { .pol = pol, .targfreq = targfreq,
.relation = relation };
struct powernowk8_target_arg pta = { .pol = pol, .newstate = index };
return work_on_cpu(pol->cpu, powernowk8_target_fn, &pta);
}
@ -1213,7 +1205,7 @@ out:
static struct cpufreq_driver cpufreq_amd64_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = powernowk8_target,
.target_index = powernowk8_target,
.bios_limit = acpi_processor_get_bios_limit,
.init = powernowk8_cpu_init,
.exit = powernowk8_cpu_exit,

15
drivers/cpufreq/ppc-corenet-cpufreq.c
View File

@ -251,27 +251,20 @@ static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy)
}
static int corenet_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int index)
{
struct cpufreq_freqs freqs;
unsigned int new;
struct clk *parent;
int ret;
struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
cpufreq_frequency_table_target(policy, data->table,
target_freq, relation, &new);
if (policy->cur == data->table[new].frequency)
return 0;
freqs.old = policy->cur;
freqs.new = data->table[new].frequency;
freqs.new = data->table[index].frequency;
mutex_lock(&cpufreq_lock);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
parent = of_clk_get(data->parent, data->table[new].driver_data);
parent = of_clk_get(data->parent, data->table[index].driver_data);
ret = clk_set_parent(data->clk, parent);
if (ret)
freqs.new = freqs.old;
@ -288,7 +281,7 @@ static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
.init = corenet_cpufreq_cpu_init,
.exit = __exit_p(corenet_cpufreq_cpu_exit),
.verify = cpufreq_generic_frequency_table_verify,
.target = corenet_cpufreq_target,
.target_index = corenet_cpufreq_target,
.get = corenet_cpufreq_get_speed,
.attr = cpufreq_generic_attr,
};

12
drivers/cpufreq/ppc_cbe_cpufreq.c
View File

@ -129,18 +129,10 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
}
static int cbe_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int cbe_pmode_new)
{
int rc;
struct cpufreq_freqs freqs;
unsigned int cbe_pmode_new;
cpufreq_frequency_table_target(policy,
cbe_freqs,
target_freq,
relation,
&cbe_pmode_new);
freqs.old = policy->cur;
freqs.new = cbe_freqs[cbe_pmode_new].frequency;
@ -164,7 +156,7 @@ static int cbe_cpufreq_target(struct cpufreq_policy *policy,
static struct cpufreq_driver cbe_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = cbe_cpufreq_target,
.target_index = cbe_cpufreq_target,
.init = cbe_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "cbe-cpufreq",

13
drivers/cpufreq/pxa2xx-cpufreq.c
View File

@ -267,14 +267,11 @@ static unsigned int pxa_cpufreq_get(unsigned int cpu)
return get_clk_frequency_khz(0);
}
static int pxa_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int pxa_set_target(struct cpufreq_policy *policy, unsigned int idx)
{
struct cpufreq_frequency_table *pxa_freqs_table;
pxa_freqs_t *pxa_freq_settings;
struct cpufreq_freqs freqs;
unsigned int idx;
unsigned long flags;
unsigned int new_freq_cpu, new_freq_mem;
unsigned int unused, preset_mdrefr, postset_mdrefr, cclkcfg;
@ -283,12 +280,6 @@ static int pxa_set_target(struct cpufreq_policy *policy,
/* Get the current policy */
find_freq_tables(&pxa_freqs_table, &pxa_freq_settings);
/* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
target_freq, relation, &idx)) {
return -EINVAL;
}
new_freq_cpu = pxa_freq_settings[idx].khz;
new_freq_mem = pxa_freq_settings[idx].membus;
freqs.old = policy->cur;
@ -448,7 +439,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
static struct cpufreq_driver pxa_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = pxa_set_target,
.target_index = pxa_set_target,
.init = pxa_cpufreq_init,
.exit = cpufreq_generic_exit,
.get = pxa_cpufreq_get,

17
drivers/cpufreq/pxa3xx-cpufreq.c
View File

@ -155,24 +155,16 @@ static unsigned int pxa3xx_cpufreq_get(unsigned int cpu)
return pxa3xx_get_clk_frequency_khz(0);
}
static int pxa3xx_cpufreq_set(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int pxa3xx_cpufreq_set(struct cpufreq_policy *policy, unsigned int index)
{
struct pxa3xx_freq_info *next;
struct cpufreq_freqs freqs;
unsigned long flags;
int idx;
if (policy->cpu != 0)
return -EINVAL;
/* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, pxa3xx_freqs_table,
target_freq, relation, &idx))
return -EINVAL;
next = &pxa3xx_freqs[idx];
next = &pxa3xx_freqs[index];
freqs.old = policy->cur;
freqs.new = next->cpufreq_mhz * 1000;
@ -181,9 +173,6 @@ static int pxa3xx_cpufreq_set(struct cpufreq_policy *policy,
freqs.old / 1000, freqs.new / 1000,
(freqs.old == freqs.new) ? " (skipped)" : "");
if (freqs.old == target_freq)
return 0;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
local_irq_save(flags);
@ -225,7 +214,7 @@ static int pxa3xx_cpufreq_init(struct cpufreq_policy *policy)
static struct cpufreq_driver pxa3xx_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = pxa3xx_cpufreq_set,
.target_index = pxa3xx_cpufreq_set,
.init = pxa3xx_cpufreq_init,
.exit = cpufreq_generic_exit,
.get = pxa3xx_cpufreq_get,

17
drivers/cpufreq/s3c2416-cpufreq.c
View File

@ -217,24 +217,15 @@ static int s3c2416_cpufreq_leave_dvs(struct s3c2416_data *s3c_freq, int idx)
}
static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int index)
{
struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
struct cpufreq_freqs freqs;
int idx, ret, to_dvs = 0;
unsigned int i;
mutex_lock(&cpufreq_lock);
pr_debug("cpufreq: to %dKHz, relation %d\n", target_freq, relation);
ret = cpufreq_frequency_table_target(policy, s3c_freq->freq_table,
target_freq, relation, &i);
if (ret != 0)
goto out;
idx = s3c_freq->freq_table[i].driver_data;
idx = s3c_freq->freq_table[index].driver_data;
if (idx == SOURCE_HCLK)
to_dvs = 1;
@ -256,7 +247,7 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy,
*/
freqs.new = (s3c_freq->is_dvs && !to_dvs)
? clk_get_rate(s3c_freq->hclk) / 1000
: s3c_freq->freq_table[i].frequency;
: s3c_freq->freq_table[index].frequency;
pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new);
@ -505,7 +496,7 @@ err_hclk:
static struct cpufreq_driver s3c2416_cpufreq_driver = {
.flags = 0,
.verify = cpufreq_generic_frequency_table_verify,
.target = s3c2416_cpufreq_set_target,
.target_index = s3c2416_cpufreq_set_target,
.get = s3c2416_cpufreq_get_speed,
.init = s3c2416_cpufreq_driver_init,
.name = "s3c2416",

18
drivers/cpufreq/s3c64xx-cpufreq.c
View File

@ -63,26 +63,16 @@ static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
}
static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int index)
{
int ret;
unsigned int i;
struct cpufreq_freqs freqs;
struct s3c64xx_dvfs *dvfs;
ret = cpufreq_frequency_table_target(policy, s3c64xx_freq_table,
target_freq, relation, &i);
if (ret != 0)
return ret;
freqs.old = clk_get_rate(armclk) / 1000;
freqs.new = s3c64xx_freq_table[i].frequency;
freqs.new = s3c64xx_freq_table[index].frequency;
freqs.flags = 0;
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].driver_data];
if (freqs.old == freqs.new)
return 0;
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[index].driver_data];
pr_debug("Transition %d-%dkHz\n", freqs.old, freqs.new);
@ -254,7 +244,7 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
static struct cpufreq_driver s3c64xx_cpufreq_driver = {
.flags = 0,
.verify = cpufreq_generic_frequency_table_verify,
.target = s3c64xx_cpufreq_set_target,
.target_index = s3c64xx_cpufreq_set_target,
.get = s3c64xx_cpufreq_get_speed,
.init = s3c64xx_cpufreq_driver_init,
.name = "s3c",

54
drivers/cpufreq/s5pv210-cpufreq.c
View File

@ -36,16 +36,7 @@ static DEFINE_MUTEX(set_freq_lock);
/* Use 800MHz when entering sleep mode */
#define SLEEP_FREQ (800 * 1000)
/*
* relation has an additional symantics other than the standard of cpufreq
* DISALBE_FURTHER_CPUFREQ: disable further access to target
* ENABLE_FURTUER_CPUFREQ: enable access to target
*/
enum cpufreq_access {
DISABLE_FURTHER_CPUFREQ = 0x10,
ENABLE_FURTHER_CPUFREQ = 0x20,
};
/* Tracks if cpu freqency can be updated anymore */
static bool no_cpufreq_access;
/*
@ -182,12 +173,10 @@ static unsigned int s5pv210_getspeed(unsigned int cpu)
return clk_get_rate(cpu_clk) / 1000;
}
static int s5pv210_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int s5pv210_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned long reg;
unsigned int index, priv_index;
unsigned int priv_index;
unsigned int pll_changing = 0;
unsigned int bus_speed_changing = 0;
int arm_volt, int_volt;
@ -195,9 +184,6 @@ static int s5pv210_target(struct cpufreq_policy *policy,
mutex_lock(&set_freq_lock);
if (relation & ENABLE_FURTHER_CPUFREQ)
no_cpufreq_access = false;
if (no_cpufreq_access) {
#ifdef CONFIG_PM_VERBOSE
pr_err("%s:%d denied access to %s as it is disabled"
@ -207,27 +193,13 @@ static int s5pv210_target(struct cpufreq_policy *policy,
goto exit;
}
if (relation & DISABLE_FURTHER_CPUFREQ)
no_cpufreq_access = true;
relation &= ~(ENABLE_FURTHER_CPUFREQ | DISABLE_FURTHER_CPUFREQ);
freqs.old = s5pv210_getspeed(0);
if (cpufreq_frequency_table_target(policy, s5pv210_freq_table,
target_freq, relation, &index)) {
ret = -EINVAL;
goto exit;
}
freqs.new = s5pv210_freq_table[index].frequency;
if (freqs.new == freqs.old)
goto exit;
/* Finding current running level index */
if (cpufreq_frequency_table_target(policy, s5pv210_freq_table,
freqs.old, relation, &priv_index)) {
freqs.old, CPUFREQ_RELATION_H,
&priv_index)) {
ret = -EINVAL;
goto exit;
}
@ -559,16 +531,18 @@ static int s5pv210_cpufreq_notifier_event(struct notifier_block *this,
switch (event) {
case PM_SUSPEND_PREPARE:
ret = cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ,
DISABLE_FURTHER_CPUFREQ);
ret = cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ, 0);
if (ret < 0)
return NOTIFY_BAD;
/* Disable updation of cpu frequency */
no_cpufreq_access = true;
return NOTIFY_OK;
case PM_POST_RESTORE:
case PM_POST_SUSPEND:
cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ,
ENABLE_FURTHER_CPUFREQ);
/* Enable updation of cpu frequency */
no_cpufreq_access = false;
cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ, 0);
return NOTIFY_OK;
}
@ -581,18 +555,18 @@ static int s5pv210_cpufreq_reboot_notifier_event(struct notifier_block *this,
{
int ret;
ret = cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ,
DISABLE_FURTHER_CPUFREQ);
ret = cpufreq_driver_target(cpufreq_cpu_get(0), SLEEP_FREQ, 0);
if (ret < 0)
return NOTIFY_BAD;
no_cpufreq_access = true;
return NOTIFY_DONE;
}
static struct cpufreq_driver s5pv210_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = s5pv210_target,
.target_index = s5pv210_target,
.get = s5pv210_getspeed,
.init = s5pv210_cpu_init,
.name = "s5pv210",

24
drivers/cpufreq/sa1100-cpufreq.c
View File

@ -177,36 +177,20 @@ static void sa1100_update_dram_timings(int current_speed, int new_speed)
}
}
static int sa1100_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int sa1100_target(struct cpufreq_policy *policy, unsigned int ppcr)
{
unsigned int cur = sa11x0_getspeed(0);
unsigned int new_ppcr;
struct cpufreq_freqs freqs;
new_ppcr = sa11x0_freq_to_ppcr(target_freq);
switch (relation) {
case CPUFREQ_RELATION_L:
if (sa11x0_ppcr_to_freq(new_ppcr) > policy->max)
new_ppcr--;
break;
case CPUFREQ_RELATION_H:
if ((sa11x0_ppcr_to_freq(new_ppcr) > target_freq) &&
(sa11x0_ppcr_to_freq(new_ppcr - 1) >= policy->min))
new_ppcr--;
break;
}
freqs.old = cur;
freqs.new = sa11x0_ppcr_to_freq(new_ppcr);
freqs.new = sa11x0_freq_table[ppcr].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
if (freqs.new > cur)
sa1100_update_dram_timings(cur, freqs.new);
PPCR = new_ppcr;
PPCR = ppcr;
if (freqs.new < cur)
sa1100_update_dram_timings(cur, freqs.new);
@ -224,7 +208,7 @@ static int __init sa1100_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver sa1100_driver __refdata = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = sa1100_target,
.target_index = sa1100_target,
.get = sa11x0_getspeed,
.init = sa1100_cpu_init,
.name = "sa1100",

26
drivers/cpufreq/sa1110-cpufreq.c
View File

@ -229,34 +229,16 @@ sdram_update_refresh(u_int cpu_khz, struct sdram_params *sdram)
/*
* Ok, set the CPU frequency.
*/
static int sa1110_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int sa1110_target(struct cpufreq_policy *policy, unsigned int ppcr)
{
struct sdram_params *sdram = &sdram_params;
struct cpufreq_freqs freqs;
struct sdram_info sd;
unsigned long flags;
unsigned int ppcr, unused;
switch (relation) {
case CPUFREQ_RELATION_L:
ppcr = sa11x0_freq_to_ppcr(target_freq);
if (sa11x0_ppcr_to_freq(ppcr) > policy->max)
ppcr--;
break;
case CPUFREQ_RELATION_H:
ppcr = sa11x0_freq_to_ppcr(target_freq);
if (ppcr && (sa11x0_ppcr_to_freq(ppcr) > target_freq) &&
(sa11x0_ppcr_to_freq(ppcr-1) >= policy->min))
ppcr--;
break;
default:
return -EINVAL;
}
unsigned int unused;
freqs.old = sa11x0_getspeed(0);
freqs.new = sa11x0_ppcr_to_freq(ppcr);
freqs.new = sa11x0_freq_table[ppcr].frequency;
sdram_calculate_timing(&sd, freqs.new, sdram);
@ -340,7 +322,7 @@ static int __init sa1110_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver sa1110_driver __refdata = {
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = sa1110_target,
.target_index = sa1110_target,
.get = sa11x0_getspeed,
.init = sa1110_cpu_init,
.name = "sa1110",

19
drivers/cpufreq/sc520_freq.c
View File

@ -53,8 +53,7 @@ static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu)
}
}
static void sc520_freq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int state)
static int sc520_freq_target(struct cpufreq_policy *policy, unsigned int state)
{
struct cpufreq_freqs freqs;
@ -76,24 +75,10 @@ static void sc520_freq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
static int sc520_freq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, sc520_freq_table,
target_freq, relation, &newstate))
return -EINVAL;
sc520_freq_set_cpu_state(policy, newstate);
return 0;
}
/*
* Module init and exit code
*/
@ -117,7 +102,7 @@ static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver sc520_freq_driver = {
.get = sc520_freq_get_cpu_frequency,
.verify = cpufreq_generic_frequency_table_verify,
.target = sc520_freq_target,
.target_index = sc520_freq_target,
.init = sc520_freq_cpu_init,
.exit = cpufreq_generic_exit,
.name = "sc520_freq",

21
drivers/cpufreq/sparc-us2e-cpufreq.c
View File

@ -245,8 +245,7 @@ static unsigned int us2e_freq_get(unsigned int cpu)
return clock_tick / estar_to_divisor(estar);
}
static void us2e_set_cpu_divider_index(struct cpufreq_policy *policy,
unsigned int index)
static int us2e_freq_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int cpu = policy->cpu;
unsigned long new_bits, new_freq;
@ -277,20 +276,6 @@ static void us2e_set_cpu_divider_index(struct cpufreq_policy *policy,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
set_cpus_allowed_ptr(current, &cpus_allowed);
}
static int us2e_freq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int new_index = 0;
if (cpufreq_frequency_table_target(policy,
&us2e_freq_table[policy->cpu].table[0],
target_freq, relation, &new_index))
return -EINVAL;
us2e_set_cpu_divider_index(policy, new_index);
return 0;
}
@ -325,7 +310,7 @@ static int us2e_freq_cpu_exit(struct cpufreq_policy *policy)
{
if (cpufreq_us2e_driver) {
cpufreq_frequency_table_put_attr(policy->cpu);
us2e_set_cpu_divider_index(policy, 0);
us2e_freq_target(policy, 0);
}
return 0;
@ -358,7 +343,7 @@ static int __init us2e_freq_init(void)
driver->init = us2e_freq_cpu_init;
driver->verify = cpufreq_generic_frequency_table_verify;
driver->target = us2e_freq_target;
driver->target_index = us2e_freq_target;
driver->get = us2e_freq_get;
driver->exit = us2e_freq_cpu_exit;
strcpy(driver->name, "UltraSPARC-IIe");

23
drivers/cpufreq/sparc-us3-cpufreq.c
View File

@ -93,8 +93,7 @@ static unsigned int us3_freq_get(unsigned int cpu)
return ret;
}
static void us3_set_cpu_divider_index(struct cpufreq_policy *policy,
unsigned int index)
static int us3_freq_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int cpu = policy->cpu;
unsigned long new_bits, new_freq, reg;
@ -136,22 +135,6 @@ static void us3_set_cpu_divider_index(struct cpufreq_policy *policy,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
set_cpus_allowed_ptr(current, &cpus_allowed);
}
static int us3_freq_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int new_index = 0;
if (cpufreq_frequency_table_target(policy,
&us3_freq_table[policy->cpu].table[0],
target_freq,
relation,
&new_index))
return -EINVAL;
us3_set_cpu_divider_index(policy, new_index);
return 0;
}
@ -182,7 +165,7 @@ static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
{
if (cpufreq_us3_driver) {
cpufreq_frequency_table_put_attr(policy->cpu);
us3_set_cpu_divider_index(policy, 0);
us3_freq_target(policy, 0);
}
return 0;
@ -219,7 +202,7 @@ static int __init us3_freq_init(void)
driver->init = us3_freq_cpu_init;
driver->verify = cpufreq_generic_frequency_table_verify;
driver->target = us3_freq_target;
driver->target_index = us3_freq_target;
driver->get = us3_freq_get;
driver->exit = us3_freq_cpu_exit;
strcpy(driver->name, "UltraSPARC-III");

12
drivers/cpufreq/spear-cpufreq.c
View File

@ -105,20 +105,16 @@ static int spear1340_set_cpu_rate(struct clk *sys_pclk, unsigned long newfreq)
}
static int spear_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
unsigned int index)
{
struct cpufreq_freqs freqs;
long newfreq;
struct clk *srcclk;
int index, ret, mult = 1;
if (cpufreq_frequency_table_target(policy, spear_cpufreq.freq_tbl,
target_freq, relation, &index))
return -EINVAL;
int ret, mult = 1;
freqs.old = spear_cpufreq_get(0);
newfreq = spear_cpufreq.freq_tbl[index].frequency * 1000;
if (of_machine_is_compatible("st,spear1340")) {
/*
* SPEAr1340 is special in the sense that due to the possibility
@ -179,7 +175,7 @@ static struct cpufreq_driver spear_cpufreq_driver = {
.name = "cpufreq-spear",
.flags = CPUFREQ_STICKY,
.verify = cpufreq_generic_frequency_table_verify,
.target = spear_cpufreq_target,
.target_index = spear_cpufreq_target,
.get = spear_cpufreq_get,
.init = spear_cpufreq_init,
.exit = cpufreq_generic_exit,

27
drivers/cpufreq/speedstep-centrino.c
View File

@ -416,21 +416,17 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
/**
* centrino_setpolicy - set a new CPUFreq policy
* @policy: new policy
* @target_freq: the target frequency
* @relation: how that frequency relates to achieved frequency
* (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H)
* @index: index of target frequency
*
* Sets a new CPUFreq policy.
*/
static int centrino_target (struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int centrino_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int newstate = 0;
unsigned int msr, oldmsr = 0, h = 0, cpu = policy->cpu;
struct cpufreq_freqs freqs;
int retval = 0;
unsigned int j, first_cpu, tmp;
struct cpufreq_frequency_table *op_points;
cpumask_var_t covered_cpus;
if (unlikely(!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL)))
@ -441,16 +437,8 @@ static int centrino_target (struct cpufreq_policy *policy,
goto out;
}
if (unlikely(cpufreq_frequency_table_target(policy,
per_cpu(centrino_model, cpu)->op_points,
target_freq,
relation,
&newstate))) {
retval = -EINVAL;
goto out;
}
first_cpu = 1;
op_points = &per_cpu(centrino_model, cpu)->op_points[index];
for_each_cpu(j, policy->cpus) {
int good_cpu;
@ -474,7 +462,7 @@ static int centrino_target (struct cpufreq_policy *policy,
break;
}
msr = per_cpu(centrino_model, cpu)->op_points[newstate].driver_data;
msr = op_points->driver_data;
if (first_cpu) {
rdmsr_on_cpu(good_cpu, MSR_IA32_PERF_CTL, &oldmsr, &h);
@ -489,7 +477,8 @@ static int centrino_target (struct cpufreq_policy *policy,
freqs.new = extract_clock(msr, cpu, 0);
pr_debug("target=%dkHz old=%d new=%d msr=%04x\n",
target_freq, freqs.old, freqs.new, msr);
op_points->frequency, freqs.old, freqs.new,
msr);
cpufreq_notify_transition(policy, &freqs,
CPUFREQ_PRECHANGE);
@ -540,7 +529,7 @@ static struct cpufreq_driver centrino_driver = {
.init = centrino_cpu_init,
.exit = centrino_cpu_exit,
.verify = cpufreq_generic_frequency_table_verify,
.target = centrino_target,
.target_index = centrino_target,
.get = get_cur_freq,
.attr = cpufreq_generic_attr,
};

24
drivers/cpufreq/speedstep-ich.c
View File

@ -251,36 +251,24 @@ static unsigned int speedstep_get(unsigned int cpu)
/**
* speedstep_target - set a new CPUFreq policy
* @policy: new policy
* @target_freq: the target frequency
* @relation: how that frequency relates to achieved frequency
* (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H)
* @index: index of target frequency
*
* Sets a new CPUFreq policy.
*/
static int speedstep_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int speedstep_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int newstate = 0, policy_cpu;
unsigned int policy_cpu;
struct cpufreq_freqs freqs;
if (cpufreq_frequency_table_target(policy, &speedstep_freqs[0],
target_freq, relation, &newstate))
return -EINVAL;
policy_cpu = cpumask_any_and(policy->cpus, cpu_online_mask);
freqs.old = speedstep_get(policy_cpu);
freqs.new = speedstep_freqs[newstate].frequency;
freqs.new = speedstep_freqs[index].frequency;
pr_debug("transiting from %u to %u kHz\n", freqs.old, freqs.new);
/* no transition necessary */
if (freqs.old == freqs.new)
return 0;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
smp_call_function_single(policy_cpu, _speedstep_set_state, &newstate,
smp_call_function_single(policy_cpu, _speedstep_set_state, &index,
true);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
@ -330,7 +318,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
static struct cpufreq_driver speedstep_driver = {
.name = "speedstep-ich",
.verify = cpufreq_generic_frequency_table_verify,
.target = speedstep_target,
.target_index = speedstep_target,
.init = speedstep_cpu_init,
.exit = cpufreq_generic_exit,
.get = speedstep_get,

20
drivers/cpufreq/speedstep-smi.c
View File

@ -235,29 +235,19 @@ static void speedstep_set_state(unsigned int state)
/**
* speedstep_target - set a new CPUFreq policy
* @policy: new policy
* @target_freq: new freq
* @relation:
* @index: index of new freq
*
* Sets a new CPUFreq policy/freq.
*/
static int speedstep_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
static int speedstep_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int newstate = 0;
struct cpufreq_freqs freqs;
if (cpufreq_frequency_table_target(policy, &speedstep_freqs[0],
target_freq, relation, &newstate))
return -EINVAL;
freqs.old = speedstep_freqs[speedstep_get_state()].frequency;
freqs.new = speedstep_freqs[newstate].frequency;
if (freqs.old == freqs.new)
return 0;
freqs.new = speedstep_freqs[index].frequency;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
speedstep_set_state(newstate);
speedstep_set_state(index);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
@ -327,7 +317,7 @@ static int speedstep_resume(struct cpufreq_policy *policy)
static struct cpufreq_driver speedstep_driver = {
.name = "speedstep-smi",
.verify = cpufreq_generic_frequency_table_verify,
.target = speedstep_target,
.target_index = speedstep_target,
.init = speedstep_cpu_init,
.exit = cpufreq_generic_exit,
.get = speedstep_get,

12
drivers/cpufreq/tegra-cpufreq.c
View File

@ -150,11 +150,8 @@ static unsigned long tegra_cpu_highest_speed(void)
return rate;
}
static int tegra_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
static int tegra_target(struct cpufreq_policy *policy, unsigned int index)
{
unsigned int idx;
unsigned int freq;
int ret = 0;
@ -165,10 +162,7 @@ static int tegra_target(struct cpufreq_policy *policy,
goto out;
}
cpufreq_frequency_table_target(policy, freq_table, target_freq,
relation, &idx);
freq = freq_table[idx].frequency;
freq = freq_table[index].frequency;
target_cpu_speed[policy->cpu] = freq;
@ -238,7 +232,7 @@ static int tegra_cpu_exit(struct cpufreq_policy *policy)
static struct cpufreq_driver tegra_cpufreq_driver = {
.verify = cpufreq_generic_frequency_table_verify,
.target = tegra_target,
.target_index = tegra_target,
.get = tegra_getspeed,
.init = tegra_cpu_init,
.exit = tegra_cpu_exit,

4
include/linux/cpufreq.h
View File

@ -187,9 +187,11 @@ struct cpufreq_driver {
/* define one out of two */
int (*setpolicy) (struct cpufreq_policy *policy);
int (*target) (struct cpufreq_policy *policy,
int (*target) (struct cpufreq_policy *policy, /* Deprecated */
unsigned int target_freq,
unsigned int relation);
int (*target_index) (struct cpufreq_policy *policy,
unsigned int index);
/* should be defined, if possible */
unsigned int (*get) (unsigned int cpu);