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Merge branch 'pm-cpufreq'

Browse source 
* pm-cpufreq: (167 commits)
  cpufreq: create per policy rwsem instead of per CPU cpu_policy_rwsem
  intel_pstate: Add Baytrail support
  intel_pstate: Refactor driver to support CPUs with different MSR layouts
  cpufreq: Implement light weight ->target_index() routine
  PM / OPP: rename header to linux/pm_opp.h
  PM / OPP: rename data structures to dev_pm equivalents
  PM / OPP: rename functions to dev_pm_opp*
  cpufreq / governor: Remove fossil comment
  cpufreq: exynos4210: Use the common clock framework to set APLL clock rate
  cpufreq: exynos4x12: Use the common clock framework to set APLL clock rate
  cpufreq: Detect spurious invocations of update_policy_cpu()
  cpufreq: pmac64: enable cpufreq on iMac G5 (iSight) model
  cpufreq: pmac64: provide cpufreq transition latency for older G5 models
  cpufreq: pmac64: speed up frequency switch
  cpufreq: highbank-cpufreq: Enable Midway/ECX-2000
  exynos-cpufreq: fix false return check from "regulator_set_voltage"
  speedstep-centrino: Remove unnecessary braces
  acpi-cpufreq: Add comment under ACPI_ADR_SPACE_SYSTEM_IO case
  cpufreq: arm-big-little: use clk_get instead of clk_get_sys
  cpufreq: exynos: Show a list of available frequencies
  ...

Conflicts:
	drivers/devfreq/exynos/exynos5_bus.c
This commit is contained in:
Rafael J. Wysocki 2013-10-28 01:29:34 +01:00
commit 93658cb859
90 changed files with 1227 additions and 2729 deletions
Download patch file Download diff file Expand all files Collapse all files

11
drivers/cpufreq/Kconfig
View file

@ -17,15 +17,11 @@ config CPU_FREQ
if CPU_FREQ
config CPU_FREQ_TABLE
tristate
config CPU_FREQ_GOV_COMMON
bool
config CPU_FREQ_STAT
tristate "CPU frequency translation statistics"
select CPU_FREQ_TABLE
default y
help
This driver exports CPU frequency statistics information through sysfs
@ -143,7 +139,6 @@ config CPU_FREQ_GOV_USERSPACE
config CPU_FREQ_GOV_ONDEMAND
tristate "'ondemand' cpufreq policy governor"
select CPU_FREQ_TABLE
select CPU_FREQ_GOV_COMMON
help
'ondemand' - This driver adds a dynamic cpufreq policy governor.
@ -187,7 +182,6 @@ config CPU_FREQ_GOV_CONSERVATIVE
config GENERIC_CPUFREQ_CPU0
tristate "Generic CPU0 cpufreq driver"
depends on HAVE_CLK && REGULATOR && PM_OPP && OF
select CPU_FREQ_TABLE
help
This adds a generic cpufreq driver for CPU0 frequency management.
It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
@ -223,7 +217,6 @@ depends on IA64
config IA64_ACPI_CPUFREQ
tristate "ACPI Processor P-States driver"
select CPU_FREQ_TABLE
depends on ACPI_PROCESSOR
help
This driver adds a CPUFreq driver which utilizes the ACPI
@ -240,7 +233,6 @@ depends on MIPS
config LOONGSON2_CPUFREQ
tristate "Loongson2 CPUFreq Driver"
select CPU_FREQ_TABLE
help
This option adds a CPUFreq driver for loongson processors which
support software configurable cpu frequency.
@ -262,7 +254,6 @@ menu "SPARC CPU frequency scaling drivers"
depends on SPARC64
config SPARC_US3_CPUFREQ
tristate "UltraSPARC-III CPU Frequency driver"
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for UltraSPARC-III processors.
@ -272,7 +263,6 @@ config SPARC_US3_CPUFREQ
config SPARC_US2E_CPUFREQ
tristate "UltraSPARC-IIe CPU Frequency driver"
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for UltraSPARC-IIe processors.
@ -285,7 +275,6 @@ menu "SH CPU Frequency scaling"
depends on SUPERH
config SH_CPU_FREQ
tristate "SuperH CPU Frequency driver"
select CPU_FREQ_TABLE
help
This adds the cpufreq driver for SuperH. Any CPU that supports
clock rate rounding through the clock framework can use this

11
drivers/cpufreq/Kconfig.arm
View file

@ -5,7 +5,6 @@
config ARM_BIG_LITTLE_CPUFREQ
tristate "Generic ARM big LITTLE CPUfreq driver"
depends on ARM_CPU_TOPOLOGY && PM_OPP && HAVE_CLK
select CPU_FREQ_TABLE
help
This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
@ -18,7 +17,6 @@ config ARM_DT_BL_CPUFREQ
config ARM_EXYNOS_CPUFREQ
bool
select CPU_FREQ_TABLE
config ARM_EXYNOS4210_CPUFREQ
bool "SAMSUNG EXYNOS4210"
@ -58,7 +56,6 @@ config ARM_EXYNOS5440_CPUFREQ
depends on SOC_EXYNOS5440
depends on HAVE_CLK && PM_OPP && OF
default y
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Samsung EXYNOS5440
SoC. The nature of exynos5440 clock controller is
@ -85,7 +82,6 @@ config ARM_IMX6Q_CPUFREQ
tristate "Freescale i.MX6Q cpufreq support"
depends on SOC_IMX6Q
depends on REGULATOR_ANATOP
select CPU_FREQ_TABLE
help
This adds cpufreq driver support for Freescale i.MX6Q SOC.
@ -101,7 +97,6 @@ config ARM_INTEGRATOR
config ARM_KIRKWOOD_CPUFREQ
def_bool ARCH_KIRKWOOD && OF
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Marvell Kirkwood
SoCs.
@ -110,7 +105,6 @@ config ARM_OMAP2PLUS_CPUFREQ
bool "TI OMAP2+"
depends on ARCH_OMAP2PLUS
default ARCH_OMAP2PLUS
select CPU_FREQ_TABLE
config ARM_S3C_CPUFREQ
bool
@ -165,7 +159,6 @@ config ARM_S3C2412_CPUFREQ
config ARM_S3C2416_CPUFREQ
bool "S3C2416 CPU Frequency scaling support"
depends on CPU_S3C2416
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for the Samsung S3C2416 and
S3C2450 SoC. The S3C2416 supports changing the rate of the
@ -196,7 +189,6 @@ config ARM_S3C2440_CPUFREQ
config ARM_S3C64XX_CPUFREQ
bool "Samsung S3C64XX"
depends on CPU_S3C6410
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver for Samsung S3C6410 SoC.
@ -206,7 +198,6 @@ config ARM_S3C64XX_CPUFREQ
config ARM_S5PV210_CPUFREQ
bool "Samsung S5PV210 and S5PC110"
depends on CPU_S5PV210
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver for Samsung S5PV210 and
@ -223,7 +214,6 @@ config ARM_SA1110_CPUFREQ
config ARM_SPEAR_CPUFREQ
bool "SPEAr CPUFreq support"
depends on PLAT_SPEAR
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver support for SPEAr SOCs.
@ -231,7 +221,6 @@ config ARM_SPEAR_CPUFREQ
config ARM_TEGRA_CPUFREQ
bool "TEGRA CPUFreq support"
depends on ARCH_TEGRA
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver support for TEGRA SOCs.

6
drivers/cpufreq/Kconfig.powerpc
View file

@ -1,7 +1,6 @@
config CPU_FREQ_CBE
tristate "CBE frequency scaling"
depends on CBE_RAS && PPC_CELL
select CPU_FREQ_TABLE
default m
help
This adds the cpufreq driver for Cell BE processors.
@ -20,7 +19,6 @@ config CPU_FREQ_CBE_PMI
config CPU_FREQ_MAPLE
bool "Support for Maple 970FX Evaluation Board"
depends on PPC_MAPLE
select CPU_FREQ_TABLE
help
This adds support for frequency switching on Maple 970FX
Evaluation Board and compatible boards (IBM JS2x blades).
@ -28,7 +26,6 @@ config CPU_FREQ_MAPLE
config PPC_CORENET_CPUFREQ
tristate "CPU frequency scaling driver for Freescale E500MC SoCs"
depends on PPC_E500MC && OF && COMMON_CLK
select CPU_FREQ_TABLE
select CLK_PPC_CORENET
help
This adds the CPUFreq driver support for Freescale e500mc,
@ -38,7 +35,6 @@ config PPC_CORENET_CPUFREQ
config CPU_FREQ_PMAC
bool "Support for Apple PowerBooks"
depends on ADB_PMU && PPC32
select CPU_FREQ_TABLE
help
This adds support for frequency switching on Apple PowerBooks,
this currently includes some models of iBook & Titanium
@ -47,7 +43,6 @@ config CPU_FREQ_PMAC
config CPU_FREQ_PMAC64
bool "Support for some Apple G5s"
depends on PPC_PMAC && PPC64
select CPU_FREQ_TABLE
help
This adds support for frequency switching on Apple iMac G5,
and some of the more recent desktop G5 machines as well.
@ -55,7 +50,6 @@ config CPU_FREQ_PMAC64
config PPC_PASEMI_CPUFREQ
bool "Support for PA Semi PWRficient"
depends on PPC_PASEMI
select CPU_FREQ_TABLE
default y
help
This adds the support for frequency switching on PA Semi

13
drivers/cpufreq/Kconfig.x86
View file

@ -31,7 +31,6 @@ config X86_PCC_CPUFREQ
config X86_ACPI_CPUFREQ
tristate "ACPI Processor P-States driver"
select CPU_FREQ_TABLE
depends on ACPI_PROCESSOR
help
This driver adds a CPUFreq driver which utilizes the ACPI
@ -60,7 +59,6 @@ config X86_ACPI_CPUFREQ_CPB
config ELAN_CPUFREQ
tristate "AMD Elan SC400 and SC410"
select CPU_FREQ_TABLE
depends on MELAN
---help---
This adds the CPUFreq driver for AMD Elan SC400 and SC410
@ -76,7 +74,6 @@ config ELAN_CPUFREQ
config SC520_CPUFREQ
tristate "AMD Elan SC520"
select CPU_FREQ_TABLE
depends on MELAN
---help---
This adds the CPUFreq driver for AMD Elan SC520 processor.
@ -88,7 +85,6 @@ config SC520_CPUFREQ
config X86_POWERNOW_K6
tristate "AMD Mobile K6-2/K6-3 PowerNow!"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
@ -100,7 +96,6 @@ config X86_POWERNOW_K6
config X86_POWERNOW_K7
tristate "AMD Mobile Athlon/Duron PowerNow!"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for mobile AMD K7 mobile processors.
@ -118,7 +113,6 @@ config X86_POWERNOW_K7_ACPI
config X86_POWERNOW_K8
tristate "AMD Opteron/Athlon64 PowerNow!"
select CPU_FREQ_TABLE
depends on ACPI && ACPI_PROCESSOR && X86_ACPI_CPUFREQ
help
This adds the CPUFreq driver for K8/early Opteron/Athlon64 processors.
@ -132,7 +126,6 @@ config X86_POWERNOW_K8
config X86_AMD_FREQ_SENSITIVITY
tristate "AMD frequency sensitivity feedback powersave bias"
depends on CPU_FREQ_GOV_ONDEMAND && X86_ACPI_CPUFREQ && CPU_SUP_AMD
select CPU_FREQ_TABLE
help
This adds AMD-specific powersave bias function to the ondemand
governor, which allows it to make more power-conscious frequency
@ -160,7 +153,6 @@ config X86_GX_SUSPMOD
config X86_SPEEDSTEP_CENTRINO
tristate "Intel Enhanced SpeedStep (deprecated)"
select CPU_FREQ_TABLE
select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
depends on X86_32 || (X86_64 && ACPI_PROCESSOR)
help
@ -190,7 +182,6 @@ config X86_SPEEDSTEP_CENTRINO_TABLE
config X86_SPEEDSTEP_ICH
tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for certain mobile Intel Pentium III
@ -204,7 +195,6 @@ config X86_SPEEDSTEP_ICH
config X86_SPEEDSTEP_SMI
tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for certain mobile Intel Pentium III
@ -217,7 +207,6 @@ config X86_SPEEDSTEP_SMI
config X86_P4_CLOCKMOD
tristate "Intel Pentium 4 clock modulation"
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Intel Pentium 4 / XEON
processors. When enabled it will lower CPU temperature by skipping
@ -259,7 +248,6 @@ config X86_LONGRUN
config X86_LONGHAUL
tristate "VIA Cyrix III Longhaul"
select CPU_FREQ_TABLE
depends on X86_32 && ACPI_PROCESSOR
help
This adds the CPUFreq driver for VIA Samuel/CyrixIII,
@ -272,7 +260,6 @@ config X86_LONGHAUL
config X86_E_POWERSAVER
tristate "VIA C7 Enhanced PowerSaver (DANGEROUS)"
select CPU_FREQ_TABLE
depends on X86_32 && ACPI_PROCESSOR
help
This adds the CPUFreq driver for VIA C7 processors. However, this driver

5
drivers/cpufreq/Makefile
View file

@ -1,5 +1,5 @@
# CPUfreq core
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o freq_table.o
# CPUfreq stats
obj-$(CONFIG_CPU_FREQ_STAT) += cpufreq_stats.o
@ -11,9 +11,6 @@ obj-$(CONFIG_CPU_FREQ_GOV_ONDEMAND) += cpufreq_ondemand.o
obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) += cpufreq_conservative.o
obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o
# CPUfreq cross-arch helpers
obj-$(CONFIG_CPU_FREQ_TABLE) += freq_table.o
obj-$(CONFIG_GENERIC_CPUFREQ_CPU0) += cpufreq-cpu0.o
##################################################################################

44
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);
@ -516,15 +507,6 @@ out:
return result;
}
static int acpi_cpufreq_verify(struct cpufreq_policy *policy)
{
struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
pr_debug("acpi_cpufreq_verify\n");
return cpufreq_frequency_table_verify(policy, data->freq_table);
}
static unsigned long
acpi_cpufreq_guess_freq(struct acpi_cpufreq_data *data, unsigned int cpu)
{
@ -837,7 +819,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->freq_table[valid_states].frequency = CPUFREQ_TABLE_END;
perf->state = 0;
result = cpufreq_frequency_table_cpuinfo(policy, data->freq_table);
result = cpufreq_table_validate_and_show(policy, data->freq_table);
if (result)
goto err_freqfree;
@ -846,12 +828,16 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
switch (perf->control_register.space_id) {
case ACPI_ADR_SPACE_SYSTEM_IO:
/* Current speed is unknown and not detectable by IO port */
/*
* The core will not set policy->cur, because
* cpufreq_driver->get is NULL, so we need to set it here.
* However, we have to guess it, because the current speed is
* unknown and not detectable via IO ports.
*/
policy->cur = acpi_cpufreq_guess_freq(data, policy->cpu);
break;
case ACPI_ADR_SPACE_FIXED_HARDWARE:
acpi_cpufreq_driver.get = get_cur_freq_on_cpu;
policy->cur = get_cur_freq_on_cpu(cpu);
break;
default:
break;
@ -868,8 +854,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
(u32) perf->states[i].power,
(u32) perf->states[i].transition_latency);
cpufreq_frequency_table_get_attr(data->freq_table, policy->cpu);
/*
* the first call to ->target() should result in us actually
* writing something to the appropriate registers.
@ -929,8 +913,8 @@ static struct freq_attr *acpi_cpufreq_attr[] = {
};
static struct cpufreq_driver acpi_cpufreq_driver = {
.verify = acpi_cpufreq_verify,
.target = acpi_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = acpi_cpufreq_target,
.bios_limit = acpi_processor_get_bios_limit,
.init = acpi_cpufreq_cpu_init,
.exit = acpi_cpufreq_cpu_exit,

56
drivers/cpufreq/arm_big_little.c
View file

@ -25,7 +25,7 @@
#include <linux/cpumask.h>
#include <linux/export.h>
#include <linux/of_platform.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/slab.h>
#include <linux/topology.h>
#include <linux/types.h>
@ -47,38 +47,23 @@ static unsigned int bL_cpufreq_get(unsigned int cpu)
return clk_get_rate(clk[cur_cluster]) / 1000;
}
/* Validate policy frequency range */
static int bL_cpufreq_verify_policy(struct cpufreq_policy *policy)
{
u32 cur_cluster = cpu_to_cluster(policy->cpu);
return cpufreq_frequency_table_verify(policy, freq_table[cur_cluster]);
}
/* 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);
@ -98,7 +83,7 @@ static void put_cluster_clk_and_freq_table(struct device *cpu_dev)
if (!atomic_dec_return(&cluster_usage[cluster])) {
clk_put(clk[cluster]);
opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
dev_dbg(cpu_dev, "%s: cluster: %d\n", __func__, cluster);
}
}
@ -119,7 +104,7 @@ static int get_cluster_clk_and_freq_table(struct device *cpu_dev)
goto atomic_dec;
}
ret = opp_init_cpufreq_table(cpu_dev, &freq_table[cluster]);
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table[cluster]);
if (ret) {
dev_err(cpu_dev, "%s: failed to init cpufreq table, cpu: %d, err: %d\n",
__func__, cpu_dev->id, ret);
@ -127,7 +112,7 @@ static int get_cluster_clk_and_freq_table(struct device *cpu_dev)
}
name[12] = cluster + '0';
clk[cluster] = clk_get_sys(name, NULL);
clk[cluster] = clk_get(cpu_dev, name);
if (!IS_ERR(clk[cluster])) {
dev_dbg(cpu_dev, "%s: clk: %p & freq table: %p, cluster: %d\n",
__func__, clk[cluster], freq_table[cluster],
@ -138,7 +123,7 @@ static int get_cluster_clk_and_freq_table(struct device *cpu_dev)
dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d, cluster: %d\n",
__func__, cpu_dev->id, cluster);
ret = PTR_ERR(clk[cluster]);
opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
atomic_dec:
atomic_dec(&cluster_usage[cluster]);
@ -165,7 +150,7 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
if (ret)
return ret;
ret = cpufreq_frequency_table_cpuinfo(policy, freq_table[cur_cluster]);
ret = cpufreq_table_validate_and_show(policy, freq_table[cur_cluster]);
if (ret) {
dev_err(cpu_dev, "CPU %d, cluster: %d invalid freq table\n",
policy->cpu, cur_cluster);
@ -173,16 +158,12 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
return ret;
}
cpufreq_frequency_table_get_attr(freq_table[cur_cluster], policy->cpu);
if (arm_bL_ops->get_transition_latency)
policy->cpuinfo.transition_latency =
arm_bL_ops->get_transition_latency(cpu_dev);
else
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = bL_cpufreq_get(policy->cpu);
cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu));
dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu);
@ -200,28 +181,23 @@ static int bL_cpufreq_exit(struct cpufreq_policy *policy)
return -ENODEV;
}
cpufreq_frequency_table_put_attr(policy->cpu);
put_cluster_clk_and_freq_table(cpu_dev);
dev_dbg(cpu_dev, "%s: Exited, cpu: %d\n", __func__, policy->cpu);
return 0;
}
/* Export freq_table to sysfs */
static struct freq_attr *bL_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver bL_cpufreq_driver = {
.name = "arm-big-little",
.flags = CPUFREQ_STICKY,
.verify = bL_cpufreq_verify_policy,
.target = bL_cpufreq_set_target,
.flags = CPUFREQ_STICKY |
CPUFREQ_HAVE_GOVERNOR_PER_POLICY,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = bL_cpufreq_set_target,
.get = bL_cpufreq_get,
.init = bL_cpufreq_init,
.exit = bL_cpufreq_exit,
.have_governor_per_policy = true,
.attr = bL_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops)

2
drivers/cpufreq/arm_big_little_dt.c
View file

@ -24,7 +24,7 @@
#include <linux/export.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/types.h>

90
drivers/cpufreq/at32ap-cpufreq.c
View file

@ -19,18 +19,10 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/export.h>
#include <linux/slab.h>
static struct clk *cpuclk;
static int at32_verify_speed(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
return 0;
}
static struct cpufreq_frequency_table *freq_table;
static unsigned int at32_get_speed(unsigned int cpu)
{
@ -43,25 +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;
@ -72,45 +51,82 @@ 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;
}
static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy)
{
unsigned int frequency, rate, min_freq;
int retval, steps, i;
if (policy->cpu != 0)
return -EINVAL;
cpuclk = clk_get(NULL, "cpu");
if (IS_ERR(cpuclk)) {
pr_debug("cpufreq: could not get CPU clk\n");
return PTR_ERR(cpuclk);
retval = PTR_ERR(cpuclk);
goto out_err;
}
policy->cpuinfo.min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
policy->cpuinfo.max_freq = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
frequency = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
policy->cpuinfo.transition_latency = 0;
policy->cur = at32_get_speed(0);
policy->min = policy->cpuinfo.min_freq;
policy->max = policy->cpuinfo.max_freq;
printk("cpufreq: AT32AP CPU frequency driver\n");
/*
* AVR32 CPU frequency rate scales in power of two between maximum and
* minimum, also add space for the table end marker.
*
* Further validate that the frequency is usable, and append it to the
* frequency table.
*/
steps = fls(frequency / min_freq) + 1;
freq_table = kzalloc(steps * sizeof(struct cpufreq_frequency_table),
GFP_KERNEL);
if (!freq_table) {
retval = -ENOMEM;
goto out_err_put_clk;
}
return 0;
for (i = 0; i < (steps - 1); i++) {
rate = clk_round_rate(cpuclk, frequency * 1000) / 1000;
if (rate != frequency)
freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
else
freq_table[i].frequency = frequency;
frequency /= 2;
}
freq_table[steps - 1].frequency = CPUFREQ_TABLE_END;
retval = cpufreq_table_validate_and_show(policy, freq_table);
if (!retval) {
printk("cpufreq: AT32AP CPU frequency driver\n");
return 0;
}
kfree(freq_table);
out_err_put_clk:
clk_put(cpuclk);
out_err:
return retval;
}
static struct cpufreq_driver at32_driver = {
.name = "at32ap",
.init = at32_cpufreq_driver_init,
.verify = at32_verify_speed,
.target = at32_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = at32_set_target,
.get = at32_get_speed,
.flags = CPUFREQ_STICKY,
};

36
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
@ -191,11 +182,6 @@ static int bfin_target(struct cpufreq_policy *policy,
return ret;
}
static int bfin_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, bfin_freq_table);
}
static int __bfin_cpu_init(struct cpufreq_policy *policy)
{
@ -209,23 +195,17 @@ static int __bfin_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = 50000; /* 50us assumed */
policy->cur = cclk;
cpufreq_frequency_table_get_attr(bfin_freq_table, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy, bfin_freq_table);
return cpufreq_table_validate_and_show(policy, bfin_freq_table);
}
static struct freq_attr *bfin_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver bfin_driver = {
.verify = bfin_verify_speed,
.target = bfin_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = bfin_target,
.get = bfin_getfreq_khz,
.init = __bfin_cpu_init,
.exit = cpufreq_generic_exit,
.name = "bfin cpufreq",
.attr = bfin_freq_attr,
.attr = cpufreq_generic_attr,
};
static int __init bfin_cpu_init(void)

86
drivers/cpufreq/cpufreq-cpu0.c
View file

@ -17,7 +17,7 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
@ -30,34 +30,19 @@ static struct clk *cpu_clk;
static struct regulator *cpu_reg;
static struct cpufreq_frequency_table *freq_table;
static int cpu0_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, freq_table);
}
static unsigned int cpu0_get_speed(unsigned int cpu)
{
return clk_get_rate(cpu_clk) / 1000;
}
static int cpu0_set_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
static int cpu0_set_target(struct cpufreq_policy *policy, unsigned int index)
{
struct cpufreq_freqs freqs;
struct opp *opp;
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;
@ -65,14 +50,11 @@ 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)) {
rcu_read_lock();
opp = opp_find_freq_ceil(cpu_dev, &freq_Hz);
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz);
if (IS_ERR(opp)) {
rcu_read_unlock();
pr_err("failed to find OPP for %ld\n", freq_Hz);
@ -80,7 +62,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy,
ret = PTR_ERR(opp);
goto post_notify;
}
volt = opp_get_voltage(opp);
volt = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
tol = volt * voltage_tolerance / 100;
volt_old = regulator_get_voltage(cpu_reg);
@ -127,50 +109,18 @@ post_notify:
static int cpu0_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
ret = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (ret) {
pr_err("invalid frequency table: %d\n", ret);
return ret;
}
policy->cpuinfo.transition_latency = transition_latency;
policy->cur = clk_get_rate(cpu_clk) / 1000;
/*
* The driver only supports the SMP configuartion where all processors
* share the clock and voltage and clock. Use cpufreq affected_cpus
* interface to have all CPUs scaled together.
*/
cpumask_setall(policy->cpus);
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, freq_table, transition_latency);
}
static int cpu0_cpufreq_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *cpu0_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver cpu0_cpufreq_driver = {
.flags = CPUFREQ_STICKY,
.verify = cpu0_verify_speed,
.target = cpu0_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cpu0_set_target,
.get = cpu0_get_speed,
.init = cpu0_cpufreq_init,
.exit = cpu0_cpufreq_exit,
.exit = cpufreq_generic_exit,
.name = "generic_cpu0",
.attr = cpu0_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int cpu0_cpufreq_probe(struct platform_device *pdev)
@ -218,7 +168,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
goto out_put_node;
}
ret = opp_init_cpufreq_table(cpu_dev, &freq_table);
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
pr_err("failed to init cpufreq table: %d\n", ret);
goto out_put_node;
@ -230,7 +180,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
transition_latency = CPUFREQ_ETERNAL;
if (!IS_ERR(cpu_reg)) {
struct opp *opp;
struct dev_pm_opp *opp;
unsigned long min_uV, max_uV;
int i;
@ -242,12 +192,12 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++)
;
rcu_read_lock();
opp = opp_find_freq_exact(cpu_dev,
opp = dev_pm_opp_find_freq_exact(cpu_dev,
freq_table[0].frequency * 1000, true);
min_uV = opp_get_voltage(opp);
opp = opp_find_freq_exact(cpu_dev,
min_uV = dev_pm_opp_get_voltage(opp);
opp = dev_pm_opp_find_freq_exact(cpu_dev,
freq_table[i-1].frequency * 1000, true);
max_uV = opp_get_voltage(opp);
max_uV = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
ret = regulator_set_voltage_time(cpu_reg, min_uV, max_uV);
if (ret > 0)
@ -264,7 +214,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
return 0;
out_free_table:
opp_free_cpufreq_table(cpu_dev, &freq_table);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
out_put_node:
of_node_put(np);
return ret;
@ -273,7 +223,7 @@ out_put_node:
static int cpu0_cpufreq_remove(struct platform_device *pdev)
{
cpufreq_unregister_driver(&cpu0_cpufreq_driver);
opp_free_cpufreq_table(cpu_dev, &freq_table);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
return 0;
}

5
drivers/cpufreq/cpufreq-nforce2.c
View file

@ -303,9 +303,7 @@ static int nforce2_verify(struct cpufreq_policy *policy)
if (policy->min < (fsb_pol_max * fid * 100))
policy->max = (fsb_pol_max + 1) * fid * 100;
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
return 0;
}
@ -362,7 +360,6 @@ static int nforce2_cpu_init(struct cpufreq_policy *policy)
policy->min = policy->cpuinfo.min_freq = min_fsb * fid * 100;
policy->max = policy->cpuinfo.max_freq = max_fsb * fid * 100;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = nforce2_get(policy->cpu);
return 0;
}

288
drivers/cpufreq/cpufreq.c
View file

@ -47,49 +47,11 @@ static LIST_HEAD(cpufreq_policy_list);
static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
#endif
/*
* cpu_policy_rwsem is a per CPU reader-writer semaphore designed to cure
* all cpufreq/hotplug/workqueue/etc related lock issues.
*
* The rules for this semaphore:
* - Any routine that wants to read from the policy structure will
* do a down_read on this semaphore.
* - Any routine that will write to the policy structure and/or may take away
* the policy altogether (eg. CPU hotplug), will hold this lock in write
* mode before doing so.
*
* Additional rules:
* - Governor routines that can be called in cpufreq hotplug path should not
* take this sem as top level hotplug notifier handler takes this.
* - Lock should not be held across
* __cpufreq_governor(data, CPUFREQ_GOV_STOP);
*/
static DEFINE_PER_CPU(struct rw_semaphore, cpu_policy_rwsem);
#define lock_policy_rwsem(mode, cpu) \
static int lock_policy_rwsem_##mode(int cpu) \
{ \
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); \
BUG_ON(!policy); \
down_##mode(&per_cpu(cpu_policy_rwsem, policy->cpu)); \
\
return 0; \
static inline bool has_target(void)
{
return cpufreq_driver->target_index || cpufreq_driver->target;
}
lock_policy_rwsem(read, cpu);
lock_policy_rwsem(write, cpu);
#define unlock_policy_rwsem(mode, cpu) \
static void unlock_policy_rwsem_##mode(int cpu) \
{ \
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); \
BUG_ON(!policy); \
up_##mode(&per_cpu(cpu_policy_rwsem, policy->cpu)); \
}
unlock_policy_rwsem(read, cpu);
unlock_policy_rwsem(write, cpu);
/*
* rwsem to guarantee that cpufreq driver module doesn't unload during critical
* sections
@ -135,7 +97,7 @@ static DEFINE_MUTEX(cpufreq_governor_mutex);
bool have_governor_per_policy(void)
{
return cpufreq_driver->have_governor_per_policy;
return !!(cpufreq_driver->flags & CPUFREQ_HAVE_GOVERNOR_PER_POLICY);
}
EXPORT_SYMBOL_GPL(have_governor_per_policy);
@ -183,6 +145,37 @@ u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
}
EXPORT_SYMBOL_GPL(get_cpu_idle_time);
/*
* This is a generic cpufreq init() routine which can be used by cpufreq
* drivers of SMP systems. It will do following:
* - validate & show freq table passed
* - set policies transition latency
* - policy->cpus with all possible CPUs
*/
int cpufreq_generic_init(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table,
unsigned int transition_latency)
{
int ret;
ret = cpufreq_table_validate_and_show(policy, table);
if (ret) {
pr_err("%s: invalid frequency table: %d\n", __func__, ret);
return ret;
}
policy->cpuinfo.transition_latency = transition_latency;
/*
* The driver only supports the SMP configuartion where all processors
* share the clock and voltage and clock.
*/
cpumask_setall(policy->cpus);
return 0;
}
EXPORT_SYMBOL_GPL(cpufreq_generic_init);
struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
{
struct cpufreq_policy *policy = NULL;
@ -363,7 +356,7 @@ 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);
@ -414,7 +407,7 @@ show_one(scaling_min_freq, min);
show_one(scaling_max_freq, max);
show_one(scaling_cur_freq, cur);
static int __cpufreq_set_policy(struct cpufreq_policy *policy,
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy);
/**
@ -435,7 +428,7 @@ static ssize_t store_##file_name \
if (ret != 1) \
return -EINVAL; \
\
ret = __cpufreq_set_policy(policy, &new_policy); \
ret = cpufreq_set_policy(policy, &new_policy); \
policy->user_policy.object = policy->object; \
\
return ret ? ret : count; \
@ -493,11 +486,7 @@ static ssize_t store_scaling_governor(struct cpufreq_policy *policy,
&new_policy.governor))
return -EINVAL;
/*
* Do not use cpufreq_set_policy here or the user_policy.max
* will be wrongly overridden
*/
ret = __cpufreq_set_policy(policy, &new_policy);
ret = cpufreq_set_policy(policy, &new_policy);
policy->user_policy.policy = policy->policy;
policy->user_policy.governor = policy->governor;
@ -525,7 +514,7 @@ 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;
}
@ -653,24 +642,21 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
{
struct cpufreq_policy *policy = to_policy(kobj);
struct freq_attr *fattr = to_attr(attr);
ssize_t ret = -EINVAL;
ssize_t ret;
if (!down_read_trylock(&cpufreq_rwsem))
goto exit;
return -EINVAL;
if (lock_policy_rwsem_read(policy->cpu) < 0)
goto up_read;
down_read(&policy->rwsem);
if (fattr->show)
ret = fattr->show(policy, buf);
else
ret = -EIO;
unlock_policy_rwsem_read(policy->cpu);
up_read:
up_read(&policy->rwsem);
up_read(&cpufreq_rwsem);
exit:
return ret;
}
@ -689,17 +675,15 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
if (!down_read_trylock(&cpufreq_rwsem))
goto unlock;
if (lock_policy_rwsem_write(policy->cpu) < 0)
goto up_read;
down_write(&policy->rwsem);
if (fattr->store)
ret = fattr->store(policy, buf, count);
else
ret = -EIO;
unlock_policy_rwsem_write(policy->cpu);
up_write(&policy->rwsem);
up_read:
up_read(&cpufreq_rwsem);
unlock:
put_online_cpus();
@ -815,7 +799,7 @@ 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;
@ -844,11 +828,11 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy)
int ret = 0;
memcpy(&new_policy, policy, sizeof(*policy));
/* assure that the starting sequence is run in __cpufreq_set_policy */
/* assure that the starting sequence is run in cpufreq_set_policy */
policy->governor = NULL;
/* set default policy */
ret = __cpufreq_set_policy(policy, &new_policy);
ret = cpufreq_set_policy(policy, &new_policy);
policy->user_policy.policy = policy->policy;
policy->user_policy.governor = policy->governor;
@ -864,10 +848,10 @@ 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__);
@ -875,7 +859,7 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
}
}
lock_policy_rwsem_write(policy->cpu);
down_write(&policy->rwsem);
write_lock_irqsave(&cpufreq_driver_lock, flags);
@ -883,9 +867,9 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
per_cpu(cpufreq_cpu_data, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
unlock_policy_rwsem_write(policy->cpu);
up_write(&policy->rwsem);
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__);
@ -930,6 +914,8 @@ static struct cpufreq_policy *cpufreq_policy_alloc(void)
goto err_free_cpumask;
INIT_LIST_HEAD(&policy->policy_list);
init_rwsem(&policy->rwsem);
return policy;
err_free_cpumask:
@ -949,26 +935,17 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
{
if (cpu == policy->cpu)
if (WARN_ON(cpu == policy->cpu))
return;
/*
* Take direct locks as lock_policy_rwsem_write wouldn't work here.
* Also lock for last cpu is enough here as contention will happen only
* after policy->cpu is changed and after it is changed, other threads
* will try to acquire lock for new cpu. And policy is already updated
* by then.
*/
down_write(&per_cpu(cpu_policy_rwsem, policy->cpu));
down_write(&policy->rwsem);
policy->last_cpu = policy->cpu;
policy->cpu = cpu;
up_write(&per_cpu(cpu_policy_rwsem, policy->last_cpu));
up_write(&policy->rwsem);
#ifdef CONFIG_CPU_FREQ_TABLE
cpufreq_frequency_table_update_policy_cpu(policy);
#endif
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_UPDATE_POLICY_CPU, policy);
}
@ -1053,6 +1030,14 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
goto err_set_policy_cpu;
}
if (cpufreq_driver->get) {
policy->cur = cpufreq_driver->get(policy->cpu);
if (!policy->cur) {
pr_err("%s: ->get() failed\n", __func__);
goto err_get_freq;
}
}
/* related cpus should atleast have policy->cpus */
cpumask_or(policy->related_cpus, policy->related_cpus, policy->cpus);
@ -1107,6 +1092,9 @@ err_out_unregister:
per_cpu(cpufreq_cpu_data, j) = NULL;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
err_get_freq:
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
err_set_policy_cpu:
cpufreq_policy_free(policy);
nomem_out:
@ -1147,9 +1135,9 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
if (ret) {
pr_err("%s: Failed to move kobj: %d", __func__, ret);
WARN_ON(lock_policy_rwsem_write(old_cpu));
down_write(&policy->rwsem);
cpumask_set_cpu(old_cpu, policy->cpus);
unlock_policy_rwsem_write(old_cpu);
up_write(&policy->rwsem);
ret = sysfs_create_link(&cpu_dev->kobj, &policy->kobj,
"cpufreq");
@ -1186,7 +1174,7 @@ 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__);
@ -1200,22 +1188,21 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
policy->governor->name, CPUFREQ_NAME_LEN);
#endif
lock_policy_rwsem_read(cpu);
down_read(&policy->rwsem);
cpus = cpumask_weight(policy->cpus);
unlock_policy_rwsem_read(cpu);
up_read(&policy->rwsem);
if (cpu != policy->cpu) {
if (!frozen)
sysfs_remove_link(&dev->kobj, "cpufreq");
} else if (cpus > 1) {
new_cpu = cpufreq_nominate_new_policy_cpu(policy, cpu, frozen);
if (new_cpu >= 0) {
update_policy_cpu(policy, new_cpu);
if (!frozen) {
pr_debug("%s: policy Kobject moved to cpu: %d "
"from: %d\n",__func__, new_cpu, cpu);
pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
__func__, new_cpu, cpu);
}
}
}
@ -1243,16 +1230,16 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
return -EINVAL;
}
WARN_ON(lock_policy_rwsem_write(cpu));
down_write(&policy->rwsem);
cpus = cpumask_weight(policy->cpus);
if (cpus > 1)
cpumask_clear_cpu(cpu, policy->cpus);
unlock_policy_rwsem_write(cpu);
up_write(&policy->rwsem);
/* 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) {
@ -1263,10 +1250,10 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
}
if (!frozen) {
lock_policy_rwsem_read(cpu);
down_read(&policy->rwsem);
kobj = &policy->kobj;
cmp = &policy->kobj_unregister;
unlock_policy_rwsem_read(cpu);
up_read(&policy->rwsem);
kobject_put(kobj);
/*
@ -1295,7 +1282,7 @@ 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",
@ -1310,36 +1297,24 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
}
/**
* __cpufreq_remove_dev - remove a CPU device
* cpufreq_remove_dev - remove a CPU device
*
* Removes the cpufreq interface for a CPU device.
* Caller should already have policy_rwsem in write mode for this CPU.
* This routine frees the rwsem before returning.
*/
static inline int __cpufreq_remove_dev(struct device *dev,
struct subsys_interface *sif,
bool frozen)
{
int ret;
ret = __cpufreq_remove_dev_prepare(dev, sif, frozen);
if (!ret)
ret = __cpufreq_remove_dev_finish(dev, sif, frozen);
return ret;
}
static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
{
unsigned int cpu = dev->id;
int retval;
int ret;
if (cpu_is_offline(cpu))
return 0;
retval = __cpufreq_remove_dev(dev, sif, false);
return retval;
ret = __cpufreq_remove_dev_prepare(dev, sif, false);
if (!ret)
ret = __cpufreq_remove_dev_finish(dev, sif, false);
return ret;
}
static void handle_update(struct work_struct *work)
@ -1458,22 +1433,22 @@ static unsigned int __cpufreq_get(unsigned int cpu)
*/
unsigned int cpufreq_get(unsigned int cpu)
{
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);
unsigned int ret_freq = 0;
if (cpufreq_disabled() || !cpufreq_driver)
return -ENOENT;
BUG_ON(!policy);
if (!down_read_trylock(&cpufreq_rwsem))
return 0;
if (unlikely(lock_policy_rwsem_read(cpu)))
goto out_policy;
down_read(&policy->rwsem);
ret_freq = __cpufreq_get(cpu);
unlock_policy_rwsem_read(cpu);
out_policy:
up_read(&policy->rwsem);
up_read(&cpufreq_rwsem);
return ret_freq;
@ -1681,12 +1656,41 @@ 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);
@ -1697,14 +1701,12 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
{
int ret = -EINVAL;
if (unlikely(lock_policy_rwsem_write(policy->cpu)))
goto fail;
down_write(&policy->rwsem);
ret = __cpufreq_driver_target(policy, target_freq, relation);
unlock_policy_rwsem_write(policy->cpu);
up_write(&policy->rwsem);
fail:
return ret;
}
EXPORT_SYMBOL_GPL(cpufreq_driver_target);
@ -1871,10 +1873,10 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu)
EXPORT_SYMBOL(cpufreq_get_policy);
/*
* data : current policy.
* policy : policy to be set.
* policy : current policy.
* new_policy: policy to be set.
*/
static int __cpufreq_set_policy(struct cpufreq_policy *policy,
static int cpufreq_set_policy(struct cpufreq_policy *policy,
struct cpufreq_policy *new_policy)
{
int ret = 0, failed = 1;
@ -1934,10 +1936,10 @@ static int __cpufreq_set_policy(struct cpufreq_policy *policy,
/* end old governor */
if (policy->governor) {
__cpufreq_governor(policy, CPUFREQ_GOV_STOP);
unlock_policy_rwsem_write(new_policy->cpu);
up_write(&policy->rwsem);
__cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
lock_policy_rwsem_write(new_policy->cpu);
down_write(&policy->rwsem);
}
/* start new governor */
@ -1946,10 +1948,10 @@ static int __cpufreq_set_policy(struct cpufreq_policy *policy,
if (!__cpufreq_governor(policy, CPUFREQ_GOV_START)) {
failed = 0;
} else {
unlock_policy_rwsem_write(new_policy->cpu);
up_write(&policy->rwsem);
__cpufreq_governor(policy,
CPUFREQ_GOV_POLICY_EXIT);
lock_policy_rwsem_write(new_policy->cpu);
down_write(&policy->rwsem);
}
}
@ -1995,10 +1997,7 @@ int cpufreq_update_policy(unsigned int cpu)
goto no_policy;
}
if (unlikely(lock_policy_rwsem_write(cpu))) {
ret = -EINVAL;
goto fail;
}
down_write(&policy->rwsem);
pr_debug("updating policy for CPU %u\n", cpu);
memcpy(&new_policy, policy, sizeof(*policy));
@ -2017,17 +2016,16 @@ 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);
}
}
ret = __cpufreq_set_policy(policy, &new_policy);
ret = cpufreq_set_policy(policy, &new_policy);
unlock_policy_rwsem_write(cpu);
up_write(&policy->rwsem);
fail:
cpufreq_cpu_put(policy);
no_policy:
return ret;
@ -2096,7 +2094,8 @@ 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);
@ -2183,14 +2182,9 @@ EXPORT_SYMBOL_GPL(cpufreq_unregister_driver);
static int __init cpufreq_core_init(void)
{
int cpu;
if (cpufreq_disabled())
return -ENODEV;
for_each_possible_cpu(cpu)
init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
cpufreq_global_kobject = kobject_create();
BUG_ON(!cpufreq_global_kobject);
register_syscore_ops(&cpufreq_syscore_ops);

5
drivers/cpufreq/cpufreq_governor.h
View file

@ -191,7 +191,10 @@ struct common_dbs_data {
struct attribute_group *attr_group_gov_sys; /* one governor - system */
struct attribute_group *attr_group_gov_pol; /* one governor - policy */
/* Common data for platforms that don't set have_governor_per_policy */
/*
* Common data for platforms that don't set
* CPUFREQ_HAVE_GOVERNOR_PER_POLICY
*/
struct dbs_data *gdbs_data;
struct cpu_dbs_common_info *(*get_cpu_cdbs)(int cpu);

11
drivers/cpufreq/cpufreq_userspace.c
View file

@ -38,18 +38,7 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
if (!per_cpu(cpu_is_managed, policy->cpu))
goto err;
/*
* We're safe from concurrent calls to ->target() here
* as we hold the userspace_mutex lock. If we were calling
* cpufreq_driver_target, a deadlock situation might occur:
* A: cpufreq_set (lock userspace_mutex) ->
* cpufreq_driver_target(lock policy->lock)
* B: cpufreq_set_policy(lock policy->lock) ->
* __cpufreq_governor ->
* cpufreq_governor_userspace (lock userspace_mutex)
*/
ret = __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_L);
err:
mutex_unlock(&userspace_mutex);
return ret;

56
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;
@ -52,66 +51,23 @@ 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_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &cris_freq_table[0]);
}
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;
}
static int cris_freq_cpu_init(struct cpufreq_policy *policy)
{
int result;
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = 1000000; /* 1ms */
policy->cur = cris_freq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, cris_freq_table);
if (result)
return (result);
cpufreq_frequency_table_get_attr(cris_freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, cris_freq_table, 1000000);
}
static int cris_freq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *cris_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver cris_freq_driver = {
.get = cris_freq_get_cpu_frequency,
.verify = cris_freq_verify,
.target = cris_freq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cris_freq_target,
.init = cris_freq_cpu_init,
.exit = cris_freq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "cris_freq",
.attr = cris_freq_attr,
.attr = cpufreq_generic_attr,
};
static int __init cris_freq_init(void)

53
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;
@ -52,63 +51,23 @@ 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_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &cris_freq_table[0]);
}
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;
}
static int cris_freq_cpu_init(struct cpufreq_policy *policy)
{
int result;
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = 1000000; /* 1ms */
policy->cur = cris_freq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, cris_freq_table);
if (result)
return (result);
cpufreq_frequency_table_get_attr(cris_freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, cris_freq_table, 1000000);
}
static int cris_freq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *cris_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver cris_freq_driver = {
.get = cris_freq_get_cpu_frequency,
.verify = cris_freq_verify,
.target = cris_freq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cris_freq_target,
.init = cris_freq_cpu_init,
.exit = cris_freq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "cris_freq",
.attr = cris_freq_attr,
.attr = cpufreq_generic_attr,
};
static int __init cris_freq_init(void)

49
drivers/cpufreq/davinci-cpufreq.c
View file

@ -50,9 +50,7 @@ static int davinci_verify_speed(struct cpufreq_policy *policy)
if (policy->cpu)
return -EINVAL;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
policy->min = clk_round_rate(armclk, policy->min * 1000) / 1000;
policy->max = clk_round_rate(armclk, policy->max * 1000) / 1000;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
@ -68,28 +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 */
@ -138,47 +126,24 @@ static int davinci_cpu_init(struct cpufreq_policy *policy)
return result;
}
policy->cur = davinci_getspeed(0);
result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (result) {
pr_err("%s: cpufreq_frequency_table_cpuinfo() failed",
__func__);
return result;
}
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
/*
* Time measurement across the target() function yields ~1500-1800us
* time taken with no drivers on notification list.
* Setting the latency to 2000 us to accommodate addition of drivers
* to pre/post change notification list.
*/
policy->cpuinfo.transition_latency = 2000 * 1000;
return 0;
return cpufreq_generic_init(policy, freq_table, 2000 * 1000);
}
static int davinci_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *davinci_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
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 = davinci_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "davinci",
.attr = davinci_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int __init davinci_cpufreq_probe(struct platform_device *pdev)

58
drivers/cpufreq/dbx500-cpufreq.c
View file

@ -19,34 +19,14 @@
static struct cpufreq_frequency_table *freq_table;
static struct clk *armss_clk;
static struct freq_attr *dbx500_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static int dbx500_cpufreq_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, freq_table);
}
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);
@ -84,43 +64,17 @@ static unsigned int dbx500_cpufreq_getspeed(unsigned int cpu)
static int dbx500_cpufreq_init(struct cpufreq_policy *policy)
{
int res;
/* get policy fields based on the table */
res = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (!res)
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
else {
pr_err("dbx500-cpufreq: Failed to read policy table\n");
return res;
}
policy->min = policy->cpuinfo.min_freq;
policy->max = policy->cpuinfo.max_freq;
policy->cur = dbx500_cpufreq_getspeed(policy->cpu);
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
/*
* FIXME : Need to take time measurement across the target()
* function with no/some/all drivers in the notification
* list.
*/
policy->cpuinfo.transition_latency = 20 * 1000; /* in ns */
/* policy sharing between dual CPUs */
cpumask_setall(policy->cpus);
return 0;
return cpufreq_generic_init(policy, freq_table, 20 * 1000);
}
static struct cpufreq_driver dbx500_cpufreq_driver = {
.flags = CPUFREQ_STICKY | CPUFREQ_CONST_LOOPS,
.verify = dbx500_cpufreq_verify_speed,
.target = dbx500_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = dbx500_cpufreq_target,
.get = dbx500_cpufreq_getspeed,
.init = dbx500_cpufreq_init,
.name = "DBX500",
.attr = dbx500_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int dbx500_cpufreq_probe(struct platform_device *pdev)

36
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;
@ -182,28 +179,14 @@ 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].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");
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;
@ -401,15 +384,13 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
}
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;
}
@ -424,19 +405,14 @@ static int eps_cpu_exit(struct cpufreq_policy *policy)
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",
.attr = eps_attr,
.attr = cpufreq_generic_attr,
};

75
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;
@ -162,38 +150,9 @@ static void elanfreq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_enable();
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
};
/**
* elanfreq_validatespeed: test if frequency range is valid
* @policy: the policy to validate
*
* This function checks if a given frequency range in kHz is valid
* for the hardware supported by the driver.
*/
static int elanfreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &elanfreq_table[0]);
}
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
*/
@ -202,7 +161,6 @@ static int elanfreq_cpu_init(struct cpufreq_policy *policy)
{
struct cpuinfo_x86 *c = &cpu_data(0);
unsigned int i;
int result;
/* capability check */
if ((c->x86_vendor != X86_VENDOR_AMD) ||
@ -221,21 +179,8 @@ static int elanfreq_cpu_init(struct cpufreq_policy *policy)
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = elanfreq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, elanfreq_table);
if (result)
return result;
cpufreq_frequency_table_get_attr(elanfreq_table, policy->cpu);
return 0;
}
static int elanfreq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, elanfreq_table);
}
@ -261,20 +206,14 @@ __setup("elanfreq=", elanfreq_setup);
#endif
static struct freq_attr *elanfreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver elanfreq_driver = {
.get = elanfreq_get_cpu_frequency,
.verify = elanfreq_verify,
.target = elanfreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = elanfreq_target,
.init = elanfreq_cpu_init,
.exit = elanfreq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "elanfreq",
.attr = elanfreq_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id elan_id[] = {

57
drivers/cpufreq/exynos-cpufreq.c
View file

@ -31,12 +31,6 @@ static unsigned int locking_frequency;
static bool frequency_locked;
static DEFINE_MUTEX(cpufreq_lock);
static int exynos_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
exynos_info->freq_table);
}
static unsigned int exynos_getspeed(unsigned int cpu)
{
return clk_get_rate(exynos_info->cpu_clk) / 1000;
@ -71,9 +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
@ -141,7 +132,7 @@ post_notify:
if ((freqs.new < freqs.old) ||
((freqs.new > freqs.old) && safe_arm_volt)) {
/* down the voltage after frequency change */
regulator_set_voltage(arm_regulator, arm_volt,
ret = regulator_set_voltage(arm_regulator, arm_volt,
arm_volt);
if (ret) {
pr_err("%s: failed to set cpu voltage to %d\n",
@ -157,13 +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);
@ -171,15 +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);
@ -247,38 +226,18 @@ static struct notifier_block exynos_cpufreq_nb = {
static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
policy->cur = policy->min = policy->max = exynos_getspeed(policy->cpu);
cpufreq_frequency_table_get_attr(exynos_info->freq_table, policy->cpu);
/* set the transition latency value */
policy->cpuinfo.transition_latency = 100000;
cpumask_setall(policy->cpus);
return cpufreq_frequency_table_cpuinfo(policy, exynos_info->freq_table);
return cpufreq_generic_init(policy, exynos_info->freq_table, 100000);
}
static int exynos_cpufreq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *exynos_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver exynos_driver = {
.flags = CPUFREQ_STICKY,
.verify = exynos_verify_speed,
.target = exynos_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = exynos_target,
.get = exynos_getspeed,
.init = exynos_cpufreq_cpu_init,
.exit = exynos_cpufreq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "exynos_cpufreq",
.attr = exynos_cpufreq_attr,
.attr = cpufreq_generic_attr,
#ifdef CONFIG_PM
.suspend = exynos_cpufreq_suspend,
.resume = exynos_cpufreq_resume,

67
drivers/cpufreq/exynos4210-cpufreq.c
View file

@ -81,9 +81,9 @@ static void exynos4210_set_clkdiv(unsigned int div_index)
static void exynos4210_set_apll(unsigned int index)
{
unsigned int tmp;
unsigned int tmp, freq = apll_freq_4210[index].freq;
/* 1. MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
/* MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
clk_set_parent(moutcore, mout_mpll);
do {
@ -92,21 +92,9 @@ static void exynos4210_set_apll(unsigned int index)
tmp &= 0x7;
} while (tmp != 0x2);
/* 2. Set APLL Lock time */
__raw_writel(EXYNOS4_APLL_LOCKTIME, EXYNOS4_APLL_LOCK);
clk_set_rate(mout_apll, freq * 1000);
/* 3. Change PLL PMS values */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~((0x3ff << 16) | (0x3f << 8) | (0x7 << 0));
tmp |= apll_freq_4210[index].mps;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
/* 4. wait_lock_time */
do {
tmp = __raw_readl(EXYNOS4_APLL_CON0);
} while (!(tmp & (0x1 << EXYNOS4_APLLCON0_LOCKED_SHIFT)));
/* 5. MUX_CORE_SEL = APLL */
/* MUX_CORE_SEL = APLL */
clk_set_parent(moutcore, mout_apll);
do {
@ -115,53 +103,15 @@ static void exynos4210_set_apll(unsigned int index)
} while (tmp != (0x1 << EXYNOS4_CLKSRC_CPU_MUXCORE_SHIFT));
}
static bool exynos4210_pms_change(unsigned int old_index, unsigned int new_index)
{
unsigned int old_pm = apll_freq_4210[old_index].mps >> 8;
unsigned int new_pm = apll_freq_4210[new_index].mps >> 8;
return (old_pm == new_pm) ? 0 : 1;
}
static void exynos4210_set_frequency(unsigned int old_index,
unsigned int new_index)
{
unsigned int tmp;
if (old_index > new_index) {
if (!exynos4210_pms_change(old_index, new_index)) {
/* 1. Change the system clock divider values */
exynos4210_set_clkdiv(new_index);
/* 2. Change just s value in apll m,p,s value */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~(0x7 << 0);
tmp |= apll_freq_4210[new_index].mps & 0x7;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
} else {
/* Clock Configuration Procedure */
/* 1. Change the system clock divider values */
exynos4210_set_clkdiv(new_index);
/* 2. Change the apll m,p,s value */
exynos4210_set_apll(new_index);
}
exynos4210_set_clkdiv(new_index);
exynos4210_set_apll(new_index);
} else if (old_index < new_index) {
if (!exynos4210_pms_change(old_index, new_index)) {
/* 1. Change just s value in apll m,p,s value */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~(0x7 << 0);
tmp |= apll_freq_4210[new_index].mps & 0x7;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
/* 2. Change the system clock divider values */
exynos4210_set_clkdiv(new_index);
} else {
/* Clock Configuration Procedure */
/* 1. Change the apll m,p,s value */
exynos4210_set_apll(new_index);
/* 2. Change the system clock divider values */
exynos4210_set_clkdiv(new_index);
}
exynos4210_set_apll(new_index);
exynos4210_set_clkdiv(new_index);
}
}
@ -194,7 +144,6 @@ int exynos4210_cpufreq_init(struct exynos_dvfs_info *info)
info->volt_table = exynos4210_volt_table;
info->freq_table = exynos4210_freq_table;
info->set_freq = exynos4210_set_frequency;
info->need_apll_change = exynos4210_pms_change;
return 0;

69
drivers/cpufreq/exynos4x12-cpufreq.c
View file

@ -128,9 +128,9 @@ static void exynos4x12_set_clkdiv(unsigned int div_index)
static void exynos4x12_set_apll(unsigned int index)
{
unsigned int tmp, pdiv;
unsigned int tmp, freq = apll_freq_4x12[index].freq;
/* 1. MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
/* MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
clk_set_parent(moutcore, mout_mpll);
do {
@ -140,24 +140,9 @@ static void exynos4x12_set_apll(unsigned int index)
tmp &= 0x7;
} while (tmp != 0x2);
/* 2. Set APLL Lock time */
pdiv = ((apll_freq_4x12[index].mps >> 8) & 0x3f);
clk_set_rate(mout_apll, freq * 1000);
__raw_writel((pdiv * 250), EXYNOS4_APLL_LOCK);
/* 3. Change PLL PMS values */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~((0x3ff << 16) | (0x3f << 8) | (0x7 << 0));
tmp |= apll_freq_4x12[index].mps;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
/* 4. wait_lock_time */
do {
cpu_relax();
tmp = __raw_readl(EXYNOS4_APLL_CON0);
} while (!(tmp & (0x1 << EXYNOS4_APLLCON0_LOCKED_SHIFT)));
/* 5. MUX_CORE_SEL = APLL */
/* MUX_CORE_SEL = APLL */
clk_set_parent(moutcore, mout_apll);
do {
@ -167,52 +152,15 @@ static void exynos4x12_set_apll(unsigned int index)
} while (tmp != (0x1 << EXYNOS4_CLKSRC_CPU_MUXCORE_SHIFT));
}
static bool exynos4x12_pms_change(unsigned int old_index, unsigned int new_index)
{
unsigned int old_pm = apll_freq_4x12[old_index].mps >> 8;
unsigned int new_pm = apll_freq_4x12[new_index].mps >> 8;
return (old_pm == new_pm) ? 0 : 1;
}
static void exynos4x12_set_frequency(unsigned int old_index,
unsigned int new_index)
{
unsigned int tmp;
if (old_index > new_index) {
if (!exynos4x12_pms_change(old_index, new_index)) {
/* 1. Change the system clock divider values */
exynos4x12_set_clkdiv(new_index);
/* 2. Change just s value in apll m,p,s value */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~(0x7 << 0);
tmp |= apll_freq_4x12[new_index].mps & 0x7;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
} else {
/* Clock Configuration Procedure */
/* 1. Change the system clock divider values */
exynos4x12_set_clkdiv(new_index);
/* 2. Change the apll m,p,s value */
exynos4x12_set_apll(new_index);
}
exynos4x12_set_clkdiv(new_index);
exynos4x12_set_apll(new_index);
} else if (old_index < new_index) {
if (!exynos4x12_pms_change(old_index, new_index)) {
/* 1. Change just s value in apll m,p,s value */
tmp = __raw_readl(EXYNOS4_APLL_CON0);
tmp &= ~(0x7 << 0);
tmp |= apll_freq_4x12[new_index].mps & 0x7;
__raw_writel(tmp, EXYNOS4_APLL_CON0);
/* 2. Change the system clock divider values */
exynos4x12_set_clkdiv(new_index);
} else {
/* Clock Configuration Procedure */
/* 1. Change the apll m,p,s value */
exynos4x12_set_apll(new_index);
/* 2. Change the system clock divider values */
exynos4x12_set_clkdiv(new_index);
}
exynos4x12_set_apll(new_index);
exynos4x12_set_clkdiv(new_index);
}
}
@ -250,7 +198,6 @@ int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info)
info->volt_table = exynos4x12_volt_table;
info->freq_table = exynos4x12_freq_table;
info->set_freq = exynos4x12_set_frequency;
info->need_apll_change = exynos4x12_pms_change;
return 0;

65
drivers/cpufreq/exynos5440-cpufreq.c
View file

@ -20,7 +20,7 @@
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@ -118,12 +118,12 @@ static int init_div_table(void)
struct cpufreq_frequency_table *freq_tbl = dvfs_info->freq_table;
unsigned int tmp, clk_div, ema_div, freq, volt_id;
int i = 0;
struct opp *opp;
struct dev_pm_opp *opp;
rcu_read_lock();
for (i = 0; freq_tbl[i].frequency != CPUFREQ_TABLE_END; i++) {
opp = opp_find_freq_exact(dvfs_info->dev,
opp = dev_pm_opp_find_freq_exact(dvfs_info->dev,
freq_tbl[i].frequency * 1000, true);
if (IS_ERR(opp)) {
rcu_read_unlock();
@ -142,7 +142,7 @@ static int init_div_table(void)
<< P0_7_CSCLKDEV_SHIFT;
/* Calculate EMA */
volt_id = opp_get_voltage(opp);
volt_id = dev_pm_opp_get_voltage(opp);
volt_id = (MAX_VOLTAGE - volt_id) / VOLTAGE_STEP;
if (volt_id < PMIC_HIGH_VOLT) {
ema_div = (CPUEMA_HIGH << P0_7_CPUEMA_SHIFT) |
@ -209,38 +209,22 @@ static void exynos_enable_dvfs(void)
dvfs_info->base + XMU_DVFS_CTRL);
}
static int exynos_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
dvfs_info->freq_table);
}
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 */
@ -251,9 +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)
@ -324,30 +307,19 @@ static void exynos_sort_descend_freq_table(void)
static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
int ret;
ret = cpufreq_frequency_table_cpuinfo(policy, dvfs_info->freq_table);
if (ret) {
dev_err(dvfs_info->dev, "Invalid frequency table: %d\n", ret);
return ret;
}
policy->cur = dvfs_info->cur_frequency;
policy->cpuinfo.transition_latency = dvfs_info->latency;
cpumask_setall(policy->cpus);
cpufreq_frequency_table_get_attr(dvfs_info->freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, dvfs_info->freq_table,
dvfs_info->latency);
}
static struct cpufreq_driver exynos_driver = {
.flags = CPUFREQ_STICKY,
.verify = exynos_verify_speed,
.target = exynos_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = exynos_target,
.get = exynos_getspeed,
.init = exynos_cpufreq_cpu_init,
.exit = cpufreq_generic_exit,
.name = CPUFREQ_NAME,
.attr = cpufreq_generic_attr,
};
static const struct of_device_id exynos_cpufreq_match[] = {
@ -399,13 +371,14 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
goto err_put_node;
}
ret = opp_init_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
ret = dev_pm_opp_init_cpufreq_table(dvfs_info->dev,
&dvfs_info->freq_table);
if (ret) {
dev_err(dvfs_info->dev,
"failed to init cpufreq table: %d\n", ret);
goto err_put_node;
}
dvfs_info->freq_count = opp_get_opp_count(dvfs_info->dev);
dvfs_info->freq_count = dev_pm_opp_get_opp_count(dvfs_info->dev);
exynos_sort_descend_freq_table();
if (of_property_read_u32(np, "clock-latency", &dvfs_info->latency))
@ -454,7 +427,7 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
return 0;
err_free_table:
opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
err_put_node:
of_node_put(np);
dev_err(&pdev->dev, "%s: failed initialization\n", __func__);
@ -464,7 +437,7 @@ err_put_node:
static int exynos_cpufreq_remove(struct platform_device *pdev)
{
cpufreq_unregister_driver(&exynos_driver);
opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
return 0;
}

59
drivers/cpufreq/freq_table.c
View file

@ -54,31 +54,30 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_cpuinfo);
int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table)
{
unsigned int next_larger = ~0;
unsigned int i;
unsigned int count = 0;
unsigned int next_larger = ~0, freq, i = 0;
bool found = false;
pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n",
policy->min, policy->max, policy->cpu);
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
unsigned int freq = table[i].frequency;
for (; freq = table[i].frequency, freq != CPUFREQ_TABLE_END; i++) {
if (freq == CPUFREQ_ENTRY_INVALID)
continue;
if ((freq >= policy->min) && (freq <= policy->max))
count++;
else if ((next_larger > freq) && (freq > policy->max))
if ((freq >= policy->min) && (freq <= policy->max)) {
found = true;
break;
}
if ((next_larger > freq) && (freq > policy->max))
next_larger = freq;
}
if (!count)
if (!found) {
policy->max = next_larger;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
}
pr_debug("verification lead to (%u - %u kHz) for cpu %u\n",
policy->min, policy->max, policy->cpu);
@ -87,6 +86,20 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
/*
* Generic routine to verify policy & frequency table, requires driver to call
* cpufreq_frequency_table_get_attr() prior to it.
*/
int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *table =
cpufreq_frequency_get_table(policy->cpu);
if (!table)
return -ENODEV;
return cpufreq_frequency_table_verify(policy, table);
}
EXPORT_SYMBOL_GPL(cpufreq_generic_frequency_table_verify);
int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table,
@ -200,6 +213,12 @@ struct freq_attr cpufreq_freq_attr_scaling_available_freqs = {
};
EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
struct freq_attr *cpufreq_generic_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
EXPORT_SYMBOL_GPL(cpufreq_generic_attr);
/*
* if you use these, you must assure that the frequency table is valid
* all the time between get_attr and put_attr!
@ -219,6 +238,18 @@ void cpufreq_frequency_table_put_attr(unsigned int cpu)
}
EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr);
int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table)
{
int ret = cpufreq_frequency_table_cpuinfo(policy, table);
if (!ret)
cpufreq_frequency_table_get_attr(table, policy->cpu);
return ret;
}
EXPORT_SYMBOL_GPL(cpufreq_table_validate_and_show);
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy)
{
pr_debug("Updating show_table for new_cpu %u from last_cpu %u\n",

5
drivers/cpufreq/gx-suspmod.c
View file

@ -401,7 +401,7 @@ static int cpufreq_gx_target(struct cpufreq_policy *policy,
static int cpufreq_gx_cpu_init(struct cpufreq_policy *policy)
{
unsigned int maxfreq, curfreq;
unsigned int maxfreq;
if (!policy || policy->cpu != 0)
return -ENODEV;
@ -415,10 +415,8 @@ static int cpufreq_gx_cpu_init(struct cpufreq_policy *policy)
maxfreq = 30000 * gx_freq_mult[getCx86(CX86_DIR1) & 0x0f];
stock_freq = maxfreq;
curfreq = gx_get_cpuspeed(0);
pr_debug("cpu max frequency is %d.\n", maxfreq);
pr_debug("cpu current frequency is %dkHz.\n", curfreq);
/* setup basic struct for cpufreq API */
policy->cpu = 0;
@ -428,7 +426,6 @@ static int cpufreq_gx_cpu_init(struct cpufreq_policy *policy)
else
policy->min = maxfreq / POLICY_MIN_DIV;
policy->max = maxfreq;
policy->cur = curfreq;
policy->cpuinfo.min_freq = maxfreq / max_duration;
policy->cpuinfo.max_freq = maxfreq;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;

3
drivers/cpufreq/highbank-cpufreq.c
View file

@ -66,7 +66,8 @@ static int hb_cpufreq_driver_init(void)
struct device_node *np;
int ret;
if (!of_machine_is_compatible("calxeda,highbank"))
if ((!of_machine_is_compatible("calxeda,highbank")) &&
(!of_machine_is_compatible("calxeda,ecx-2000")))
return -ENODEV;
cpu_dev = get_cpu_device(0);

52
drivers/cpufreq/ia64-acpi-cpufreq.c
View file

@ -227,42 +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_verify (
struct cpufreq_policy *policy)
{
unsigned int result = 0;
struct cpufreq_acpi_io *data = acpi_io_data[policy->cpu];
pr_debug("acpi_cpufreq_verify\n");
result = cpufreq_frequency_table_verify(policy,
data->freq_table);
return (result);
}
static int
acpi_cpufreq_cpu_init (
struct cpufreq_policy *policy)
@ -321,7 +290,6 @@ acpi_cpufreq_cpu_init (
data->acpi_data.states[i].transition_latency * 1000;
}
}
policy->cur = processor_get_freq(data, policy->cpu);
/* table init */
for (i = 0; i <= data->acpi_data.state_count; i++)
@ -335,7 +303,7 @@ acpi_cpufreq_cpu_init (
}
}
result = cpufreq_frequency_table_cpuinfo(policy, data->freq_table);
result = cpufreq_table_validate_and_show(policy, data->freq_table);
if (result) {
goto err_freqfree;
}
@ -356,8 +324,6 @@ acpi_cpufreq_cpu_init (
(u32) data->acpi_data.states[i].status,
(u32) data->acpi_data.states[i].control);
cpufreq_frequency_table_get_attr(data->freq_table, policy->cpu);
/* the first call to ->target() should result in us actually
* writing something to the appropriate registers. */
data->resume = 1;
@ -396,20 +362,14 @@ acpi_cpufreq_cpu_exit (
}
static struct freq_attr* acpi_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver acpi_cpufreq_driver = {
.verify = acpi_cpufreq_verify,
.target = acpi_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = acpi_cpufreq_target,
.get = acpi_cpufreq_get,
.init = acpi_cpufreq_cpu_init,
.exit = acpi_cpufreq_cpu_exit,
.name = "acpi-cpufreq",
.attr = acpi_cpufreq_attr,
.attr = cpufreq_generic_attr,
};

80
drivers/cpufreq/imx6q-cpufreq.c
View file

@ -13,7 +13,7 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
@ -35,49 +35,31 @@ static struct device *cpu_dev;
static struct cpufreq_frequency_table *freq_table;
static unsigned int transition_latency;
static int imx6q_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, freq_table);
}
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 opp *opp;
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 = opp_find_freq_ceil(cpu_dev, &freq_hz);
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_hz);
if (IS_ERR(opp)) {
rcu_read_unlock();
dev_err(cpu_dev, "failed to find OPP for %ld\n", freq_hz);
return PTR_ERR(opp);
}
volt = opp_get_voltage(opp);
volt = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
volt_old = regulator_get_voltage(arm_reg);
@ -159,47 +141,23 @@ post_notify:
static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
ret = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (ret) {
dev_err(cpu_dev, "invalid frequency table: %d\n", ret);
return ret;
}
policy->cpuinfo.transition_latency = transition_latency;
policy->cur = clk_get_rate(arm_clk) / 1000;
cpumask_setall(policy->cpus);
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, freq_table, transition_latency);
}
static int imx6q_cpufreq_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *imx6q_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver imx6q_cpufreq_driver = {
.verify = imx6q_verify_speed,
.target = imx6q_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = imx6q_set_target,
.get = imx6q_get_speed,
.init = imx6q_cpufreq_init,
.exit = imx6q_cpufreq_exit,
.exit = cpufreq_generic_exit,
.name = "imx6q-cpufreq",
.attr = imx6q_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int imx6q_cpufreq_probe(struct platform_device *pdev)
{
struct device_node *np;
struct opp *opp;
struct dev_pm_opp *opp;
unsigned long min_volt, max_volt;
int num, ret;
@ -237,14 +195,14 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
}
/* We expect an OPP table supplied by platform */
num = opp_get_opp_count(cpu_dev);
num = dev_pm_opp_get_opp_count(cpu_dev);
if (num < 0) {
ret = num;
dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
goto put_node;
}
ret = opp_init_cpufreq_table(cpu_dev, &freq_table);
ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
if (ret) {
dev_err(cpu_dev, "failed to init cpufreq table: %d\n", ret);
goto put_node;
@ -259,12 +217,12 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
* same order.
*/
rcu_read_lock();
opp = opp_find_freq_exact(cpu_dev,
opp = dev_pm_opp_find_freq_exact(cpu_dev,
freq_table[0].frequency * 1000, true);
min_volt = opp_get_voltage(opp);
opp = opp_find_freq_exact(cpu_dev,
min_volt = dev_pm_opp_get_voltage(opp);
opp = dev_pm_opp_find_freq_exact(cpu_dev,
freq_table[--num].frequency * 1000, true);
max_volt = opp_get_voltage(opp);
max_volt = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
ret = regulator_set_voltage_time(arm_reg, min_volt, max_volt);
if (ret > 0)
@ -292,7 +250,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
return 0;
free_freq_table:
opp_free_cpufreq_table(cpu_dev, &freq_table);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
put_node:
of_node_put(np);
return ret;
@ -301,7 +259,7 @@ put_node:
static int imx6q_cpufreq_remove(struct platform_device *pdev)
{
cpufreq_unregister_driver(&imx6q_cpufreq_driver);
opp_free_cpufreq_table(cpu_dev, &freq_table);
dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
return 0;
}

14
drivers/cpufreq/integrator-cpufreq.c
View file

@ -59,9 +59,7 @@ static int integrator_verify_policy(struct cpufreq_policy *policy)
{
struct icst_vco vco;
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
vco = icst_hz_to_vco(&cclk_params, policy->max * 1000);
policy->max = icst_hz(&cclk_params, vco) / 1000;
@ -69,10 +67,7 @@ static int integrator_verify_policy(struct cpufreq_policy *policy)
vco = icst_hz_to_vco(&cclk_params, policy->min * 1000);
policy->min = icst_hz(&cclk_params, vco) / 1000;
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
return 0;
}
@ -186,10 +181,9 @@ static int integrator_cpufreq_init(struct cpufreq_policy *policy)
{
/* set default policy and cpuinfo */
policy->cpuinfo.max_freq = 160000;
policy->cpuinfo.min_freq = 12000;
policy->max = policy->cpuinfo.max_freq = 160000;
policy->min = policy->cpuinfo.min_freq = 12000;
policy->cpuinfo.transition_latency = 1000000; /* 1 ms, assumed */
policy->cur = policy->min = policy->max = integrator_get(policy->cpu);
return 0;
}

181
drivers/cpufreq/intel_pstate.c
View file

@ -33,6 +33,8 @@
#define SAMPLE_COUNT 3
#define BYT_RATIOS 0x66a
#define FRAC_BITS 8
#define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
#define fp_toint(X) ((X) >> FRAC_BITS)
@ -78,7 +80,6 @@ struct cpudata {
struct timer_list timer;
struct pstate_adjust_policy *pstate_policy;
struct pstate_data pstate;
struct _pid pid;
@ -100,15 +101,21 @@ struct pstate_adjust_policy {
int i_gain_pct;
};
static struct pstate_adjust_policy default_policy = {
.sample_rate_ms = 10,
.deadband = 0,
.setpoint = 97,
.p_gain_pct = 20,
.d_gain_pct = 0,
.i_gain_pct = 0,
struct pstate_funcs {
int (*get_max)(void);
int (*get_min)(void);
int (*get_turbo)(void);
void (*set)(int pstate);
};
struct cpu_defaults {
struct pstate_adjust_policy pid_policy;
struct pstate_funcs funcs;
};
static struct pstate_adjust_policy pid_params;
static struct pstate_funcs pstate_funcs;
struct perf_limits {
int no_turbo;
int max_perf_pct;
@ -185,14 +192,14 @@ static signed int pid_calc(struct _pid *pid, int32_t busy)
static inline void intel_pstate_busy_pid_reset(struct cpudata *cpu)
{
pid_p_gain_set(&cpu->pid, cpu->pstate_policy->p_gain_pct);
pid_d_gain_set(&cpu->pid, cpu->pstate_policy->d_gain_pct);
pid_i_gain_set(&cpu->pid, cpu->pstate_policy->i_gain_pct);
pid_p_gain_set(&cpu->pid, pid_params.p_gain_pct);
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,
cpu->pstate_policy->setpoint,
pid_params.setpoint,
100,
cpu->pstate_policy->deadband,
pid_params.deadband,
0);
}
@ -226,12 +233,12 @@ struct pid_param {
};
static struct pid_param pid_files[] = {
{"sample_rate_ms", &default_policy.sample_rate_ms},
{"d_gain_pct", &default_policy.d_gain_pct},
{"i_gain_pct", &default_policy.i_gain_pct},
{"deadband", &default_policy.deadband},
{"setpoint", &default_policy.setpoint},
{"p_gain_pct", &default_policy.p_gain_pct},
{"sample_rate_ms", &pid_params.sample_rate_ms},
{"d_gain_pct", &pid_params.d_gain_pct},
{"i_gain_pct", &pid_params.i_gain_pct},
{"deadband", &pid_params.deadband},
{"setpoint", &pid_params.setpoint},
{"p_gain_pct", &pid_params.p_gain_pct},
{NULL, NULL}
};
@ -336,33 +343,92 @@ static void intel_pstate_sysfs_expose_params(void)
}
/************************** sysfs end ************************/
static int byt_get_min_pstate(void)
{
u64 value;
rdmsrl(BYT_RATIOS, value);
return value & 0xFF;
}
static int intel_pstate_min_pstate(void)
static int byt_get_max_pstate(void)
{
u64 value;
rdmsrl(BYT_RATIOS, value);
return (value >> 16) & 0xFF;
}
static int core_get_min_pstate(void)
{
u64 value;
rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 40) & 0xFF;
}
static int intel_pstate_max_pstate(void)
static int core_get_max_pstate(void)
{
u64 value;
rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 8) & 0xFF;
}
static int intel_pstate_turbo_pstate(void)
static int core_get_turbo_pstate(void)
{
u64 value;
int nont, ret;
rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
nont = intel_pstate_max_pstate();
nont = core_get_max_pstate();
ret = ((value) & 255);
if (ret <= nont)
ret = nont;
return ret;
}
static void core_set_pstate(int pstate)
{
u64 val;
val = pstate << 8;
if (limits.no_turbo)
val |= (u64)1 << 32;
wrmsrl(MSR_IA32_PERF_CTL, val);
}
static struct cpu_defaults core_params = {
.pid_policy = {
.sample_rate_ms = 10,
.deadband = 0,
.setpoint = 97,
.p_gain_pct = 20,
.d_gain_pct = 0,
.i_gain_pct = 0,
},
.funcs = {
.get_max = core_get_max_pstate,
.get_min = core_get_min_pstate,
.get_turbo = core_get_turbo_pstate,
.set = core_set_pstate,
},
};
static struct cpu_defaults byt_params = {
.pid_policy = {
.sample_rate_ms = 10,
.deadband = 0,
.setpoint = 97,
.p_gain_pct = 14,
.d_gain_pct = 0,
.i_gain_pct = 4,
},
.funcs = {
.get_max = byt_get_max_pstate,
.get_min = byt_get_min_pstate,
.get_turbo = byt_get_max_pstate,
.set = core_set_pstate,
},
};
static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
{
int max_perf = cpu->pstate.turbo_pstate;
@ -383,7 +449,6 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
{
int max_perf, min_perf;
u64 val;
intel_pstate_get_min_max(cpu, &min_perf, &max_perf);
@ -395,11 +460,8 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
trace_cpu_frequency(pstate * 100000, cpu->cpu);
cpu->pstate.current_pstate = pstate;
val = pstate << 8;
if (limits.no_turbo)
val |= (u64)1 << 32;
wrmsrl(MSR_IA32_PERF_CTL, val);
pstate_funcs.set(pstate);
}
static inline void intel_pstate_pstate_increase(struct cpudata *cpu, int steps)
@ -421,9 +483,9 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
{
sprintf(cpu->name, "Intel 2nd generation core");
cpu->pstate.min_pstate = intel_pstate_min_pstate();
cpu->pstate.max_pstate = intel_pstate_max_pstate();
cpu->pstate.turbo_pstate = intel_pstate_turbo_pstate();
cpu->pstate.min_pstate = pstate_funcs.get_min();
cpu->pstate.max_pstate = pstate_funcs.get_max();
cpu->pstate.turbo_pstate = pstate_funcs.get_turbo();
/*
* goto max pstate so we don't slow up boot if we are built-in if we are
@ -465,7 +527,7 @@ static inline void intel_pstate_set_sample_time(struct cpudata *cpu)
{
int sample_time, delay;
sample_time = cpu->pstate_policy->sample_rate_ms;
sample_time = pid_params.sample_rate_ms;
delay = msecs_to_jiffies(sample_time);
mod_timer_pinned(&cpu->timer, jiffies + delay);
}
@ -521,14 +583,15 @@ static void intel_pstate_timer_func(unsigned long __data)
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&policy }
static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
ICPU(0x2a, default_policy),
ICPU(0x2d, default_policy),
ICPU(0x3a, default_policy),
ICPU(0x3c, default_policy),
ICPU(0x3e, default_policy),
ICPU(0x3f, default_policy),
ICPU(0x45, default_policy),
ICPU(0x46, default_policy),
ICPU(0x2a, core_params),
ICPU(0x2d, core_params),
ICPU(0x37, byt_params),
ICPU(0x3a, core_params),
ICPU(0x3c, core_params),
ICPU(0x3e, core_params),
ICPU(0x3f, core_params),
ICPU(0x45, core_params),
ICPU(0x46, core_params),
{}
};
MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
@ -552,8 +615,7 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
intel_pstate_get_cpu_pstates(cpu);
cpu->cpu = cpunum;
cpu->pstate_policy =
(struct pstate_adjust_policy *)id->driver_data;
init_timer_deferrable(&cpu->timer);
cpu->timer.function = intel_pstate_timer_func;
cpu->timer.data =
@ -613,9 +675,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
static int intel_pstate_verify_policy(struct cpufreq_policy *policy)
{
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
if ((policy->policy != CPUFREQ_POLICY_POWERSAVE) &&
(policy->policy != CPUFREQ_POLICY_PERFORMANCE))
@ -683,9 +743,9 @@ static int intel_pstate_msrs_not_valid(void)
rdmsrl(MSR_IA32_APERF, aperf);
rdmsrl(MSR_IA32_MPERF, mperf);
if (!intel_pstate_min_pstate() ||
!intel_pstate_max_pstate() ||
!intel_pstate_turbo_pstate())
if (!pstate_funcs.get_max() ||
!pstate_funcs.get_min() ||
!pstate_funcs.get_turbo())
return -ENODEV;
rdmsrl(MSR_IA32_APERF, tmp);
@ -698,10 +758,30 @@ static int intel_pstate_msrs_not_valid(void)
return 0;
}
void copy_pid_params(struct pstate_adjust_policy *policy)
{
pid_params.sample_rate_ms = policy->sample_rate_ms;
pid_params.p_gain_pct = policy->p_gain_pct;
pid_params.i_gain_pct = policy->i_gain_pct;
pid_params.d_gain_pct = policy->d_gain_pct;
pid_params.deadband = policy->deadband;
pid_params.setpoint = policy->setpoint;
}
void copy_cpu_funcs(struct pstate_funcs *funcs)
{
pstate_funcs.get_max = funcs->get_max;
pstate_funcs.get_min = funcs->get_min;
pstate_funcs.get_turbo = funcs->get_turbo;
pstate_funcs.set = funcs->set;
}
static int __init intel_pstate_init(void)
{
int cpu, rc = 0;
const struct x86_cpu_id *id;
struct cpu_defaults *cpu_info;
if (no_load)
return -ENODEV;
@ -710,6 +790,11 @@ static int __init intel_pstate_init(void)
if (!id)
return -ENODEV;
cpu_info = (struct cpu_defaults *)id->driver_data;
copy_pid_params(&cpu_info->pid_policy);
copy_cpu_funcs(&cpu_info->funcs);
if (intel_pstate_msrs_not_valid())
return -ENODEV;

55
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;
@ -100,24 +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_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, kirkwood_freq_table);
}
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;
}
@ -125,40 +107,17 @@ static int kirkwood_cpufreq_target(struct cpufreq_policy *policy,
/* Module init and exit code */
static int kirkwood_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
int result;
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = 5000; /* 5uS */
policy->cur = kirkwood_cpufreq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, kirkwood_freq_table);
if (result)
return result;
cpufreq_frequency_table_get_attr(kirkwood_freq_table, policy->cpu);
return 0;
return cpufreq_generic_init(policy, kirkwood_freq_table, 5000);
}
static int kirkwood_cpufreq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *kirkwood_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver kirkwood_cpufreq_driver = {
.get = kirkwood_cpufreq_get_cpu_frequency,
.verify = kirkwood_cpufreq_verify,
.target = kirkwood_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = kirkwood_cpufreq_target,
.init = kirkwood_cpufreq_cpu_init,
.exit = kirkwood_cpufreq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "kirkwood-cpufreq",
.attr = kirkwood_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int kirkwood_cpufreq_probe(struct platform_device *pdev)

45
drivers/cpufreq/longhaul.c
View file

@ -625,28 +625,13 @@ static void longhaul_setup_voltagescaling(void)
}
static int longhaul_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, longhaul_table);
}
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 {
@ -919,36 +904,18 @@ static int longhaul_cpu_init(struct cpufreq_policy *policy)
longhaul_setup_voltagescaling();
policy->cpuinfo.transition_latency = 200000; /* nsec */
policy->cur = calc_speed(longhaul_get_cpu_mult());
ret = cpufreq_frequency_table_cpuinfo(policy, longhaul_table);
if (ret)
return ret;
cpufreq_frequency_table_get_attr(longhaul_table, policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, longhaul_table);
}
static int longhaul_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *longhaul_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver longhaul_driver = {
.verify = longhaul_verify,
.target = longhaul_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = longhaul_target,
.get = longhaul_get,
.init = longhaul_cpu_init,
.exit = longhaul_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "longhaul",
.attr = longhaul_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id longhaul_id[] = {

4
drivers/cpufreq/longrun.c
View file

@ -129,9 +129,7 @@ static int longrun_verify_policy(struct cpufreq_policy *policy)
return -EINVAL;
policy->cpu = 0;
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
if ((policy->policy != CPUFREQ_POLICY_POWERSAVE) &&
(policy->policy != CPUFREQ_POLICY_PERFORMANCE))

45
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);
@ -131,40 +120,24 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
return ret;
}
policy->cur = loongson2_cpufreq_get(policy->cpu);
cpufreq_frequency_table_get_attr(&loongson2_clockmod_table[0],
policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy,
&loongson2_clockmod_table[0]);
}
static int loongson2_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
&loongson2_clockmod_table[0]);
return cpufreq_generic_init(policy, &loongson2_clockmod_table[0], 0);
}
static int loongson2_cpufreq_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
clk_put(cpuclk);
return 0;
}
static struct freq_attr *loongson2_table_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver loongson2_cpufreq_driver = {
.name = "loongson2",
.init = loongson2_cpufreq_cpu_init,
.verify = loongson2_cpufreq_verify,
.target = loongson2_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = loongson2_cpufreq_target,
.get = loongson2_cpufreq_get,
.exit = loongson2_cpufreq_exit,
.attr = loongson2_table_attr,
.attr = cpufreq_generic_attr,
};
static struct platform_device_id platform_device_ids[] = {

42
drivers/cpufreq/maple-cpufreq.c
View file

@ -64,11 +64,6 @@ static struct cpufreq_frequency_table maple_cpu_freqs[] = {
{0, CPUFREQ_TABLE_END},
};
static struct freq_attr *maple_cpu_freqs_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
/* Power mode data is an array of the 32 bits PCR values to use for
* the various frequencies, retrieved from the device-tree
*/
@ -135,32 +130,19 @@ static int maple_scom_query_freq(void)
* Common interface to the cpufreq core
*/
static int maple_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, maple_cpu_freqs);
}
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);
@ -175,27 +157,17 @@ static unsigned int maple_cpufreq_get_speed(unsigned int cpu)
static int maple_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
policy->cpuinfo.transition_latency = 12000;
policy->cur = maple_cpu_freqs[maple_scom_query_freq()].frequency;
/* secondary CPUs are tied to the primary one by the
* cpufreq core if in the secondary policy we tell it that
* it actually must be one policy together with all others. */
cpumask_setall(policy->cpus);
cpufreq_frequency_table_get_attr(maple_cpu_freqs, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy,
maple_cpu_freqs);
return cpufreq_generic_init(policy, maple_cpu_freqs, 12000);
}
static struct cpufreq_driver maple_cpufreq_driver = {
.name = "maple",
.flags = CPUFREQ_CONST_LOOPS,
.init = maple_cpufreq_cpu_init,
.verify = maple_cpufreq_verify,
.target = maple_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = maple_cpufreq_target,
.get = maple_cpufreq_get_speed,
.attr = maple_cpu_freqs_attr,
.attr = cpufreq_generic_attr,
};
static int __init maple_cpufreq_init(void)

107
drivers/cpufreq/omap-cpufreq.c
View file

@ -22,7 +22,7 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/opp.h>
#include <linux/pm_opp.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/platform_device.h>
@ -40,13 +40,6 @@ static struct clk *mpu_clk;
static struct device *mpu_dev;
static struct regulator *mpu_reg;
static int omap_verify_speed(struct cpufreq_policy *policy)
{
if (!freq_table)
return -EINVAL;
return cpufreq_frequency_table_verify(policy, freq_table);
}
static unsigned int omap_getspeed(unsigned int cpu)
{
unsigned long rate;
@ -58,40 +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 opp *opp;
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);
@ -105,14 +73,14 @@ static int omap_target(struct cpufreq_policy *policy,
if (mpu_reg) {
rcu_read_lock();
opp = opp_find_freq_ceil(mpu_dev, &freq);
opp = dev_pm_opp_find_freq_ceil(mpu_dev, &freq);
if (IS_ERR(opp)) {
rcu_read_unlock();
dev_err(mpu_dev, "%s: unable to find MPU OPP for %d\n",
__func__, freqs.new);
return -EINVAL;
}
volt = opp_get_voltage(opp);
volt = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
tol = volt * OPP_TOLERANCE / 100;
volt_old = regulator_get_voltage(mpu_reg);
@ -162,86 +130,57 @@ done:
static inline void freq_table_free(void)
{
if (atomic_dec_and_test(&freq_table_users))
opp_free_cpufreq_table(mpu_dev, &freq_table);
dev_pm_opp_free_cpufreq_table(mpu_dev, &freq_table);
}
static int omap_cpu_init(struct cpufreq_policy *policy)
{
int result = 0;
int result;
mpu_clk = clk_get(NULL, "cpufreq_ck");
if (IS_ERR(mpu_clk))
return PTR_ERR(mpu_clk);
if (policy->cpu >= NR_CPUS) {
result = -EINVAL;
goto fail_ck;
}
policy->cur = omap_getspeed(policy->cpu);
if (!freq_table)
result = opp_init_cpufreq_table(mpu_dev, &freq_table);
if (result) {
dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n",
if (!freq_table) {
result = dev_pm_opp_init_cpufreq_table(mpu_dev, &freq_table);
if (result) {
dev_err(mpu_dev,
"%s: cpu%d: failed creating freq table[%d]\n",
__func__, policy->cpu, result);
goto fail_ck;
goto fail;
}
}
atomic_inc_return(&freq_table_users);
result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (result)
goto fail_table;
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
policy->cur = omap_getspeed(policy->cpu);
/*
* On OMAP SMP configuartion, both processors share the voltage
* and clock. So both CPUs needs to be scaled together and hence
* needs software co-ordination. Use cpufreq affected_cpus
* interface to handle this scenario. Additional is_smp() check
* is to keep SMP_ON_UP build working.
*/
if (is_smp())
cpumask_setall(policy->cpus);
/* FIXME: what's the actual transition time? */
policy->cpuinfo.transition_latency = 300 * 1000;
result = cpufreq_generic_init(policy, freq_table, 300 * 1000);
if (!result)
return 0;
return 0;
fail_table:
freq_table_free();
fail_ck:
fail:
clk_put(mpu_clk);
return result;
}
static int omap_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
freq_table_free();
clk_put(mpu_clk);
return 0;
}
static struct freq_attr *omap_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver omap_driver = {
.flags = CPUFREQ_STICKY,
.verify = omap_verify_speed,
.target = omap_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = omap_target,
.get = omap_getspeed,
.init = omap_cpu_init,
.exit = omap_cpu_exit,
.name = "omap",
.attr = omap_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int omap_cpufreq_probe(struct platform_device *pdev)

45
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);
@ -140,12 +130,6 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
}
static int cpufreq_p4_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &p4clockmod_table[0]);
}
static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
{
if (c->x86 == 0x06) {
@ -230,25 +214,17 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
else
p4clockmod_table[i].frequency = (stock_freq * i)/8;
}
cpufreq_frequency_table_get_attr(p4clockmod_table, policy->cpu);
/* cpuinfo and default policy values */
/* the transition latency is set to be 1 higher than the maximum
* transition latency of the ondemand governor */
policy->cpuinfo.transition_latency = 10000001;
policy->cur = stock_freq;
return cpufreq_frequency_table_cpuinfo(policy, &p4clockmod_table[0]);
return cpufreq_table_validate_and_show(policy, &p4clockmod_table[0]);
}
static int cpufreq_p4_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static unsigned int cpufreq_p4_get(unsigned int cpu)
{
u32 l, h;
@ -267,19 +243,14 @@ static unsigned int cpufreq_p4_get(unsigned int cpu)
return stock_freq;
}
static struct freq_attr *p4clockmod_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver p4clockmod_driver = {
.verify = cpufreq_p4_verify,
.target = cpufreq_p4_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cpufreq_p4_target,
.init = cpufreq_p4_cpu_init,
.exit = cpufreq_p4_cpu_exit,
.exit = cpufreq_generic_exit,
.get = cpufreq_p4_get,
.name = "p4-clockmod",
.attr = p4clockmod_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id cpufreq_p4_id[] = {

37
drivers/cpufreq/pasemi-cpufreq.c
View file

@ -69,11 +69,6 @@ static struct cpufreq_frequency_table pas_freqs[] = {
{0, CPUFREQ_TABLE_END},
};
static struct freq_attr *pas_cpu_freqs_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
/*
* hardware specific functions
*/
@ -209,22 +204,13 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
pr_debug("%d: %d\n", i, pas_freqs[i].frequency);
}
policy->cpuinfo.transition_latency = get_gizmo_latency();
cur_astate = get_cur_astate(policy->cpu);
pr_debug("current astate is at %d\n",cur_astate);
policy->cur = pas_freqs[cur_astate].frequency;
cpumask_copy(policy->cpus, cpu_online_mask);
ppc_proc_freq = policy->cur * 1000ul;
cpufreq_frequency_table_get_attr(pas_freqs, policy->cpu);
/* this ensures that policy->cpuinfo_min and policy->cpuinfo_max
* are set correctly
*/
return cpufreq_frequency_table_cpuinfo(policy, pas_freqs);
return cpufreq_generic_init(policy, pas_freqs, get_gizmo_latency());
out_unmap_sdcpwr:
iounmap(sdcpwr_mapbase);
@ -253,25 +239,12 @@ static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static int pas_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, pas_freqs);
}
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;
@ -300,9 +273,9 @@ static struct cpufreq_driver pas_cpufreq_driver = {
.flags = CPUFREQ_CONST_LOOPS,
.init = pas_cpufreq_cpu_init,
.exit = pas_cpufreq_cpu_exit,
.verify = pas_cpufreq_verify,
.target = pas_cpufreq_target,
.attr = pas_cpu_freqs_attr,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = pas_cpufreq_target,
.attr = cpufreq_generic_attr,
};
/*

10
drivers/cpufreq/pcc-cpufreq.c
View file

@ -111,8 +111,7 @@ static struct pcc_cpu __percpu *pcc_cpu_info;
static int pcc_cpufreq_verify(struct cpufreq_policy *policy)
{
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
return 0;
}
@ -559,13 +558,6 @@ static int pcc_cpufreq_cpu_init(struct cpufreq_policy *policy)
ioread32(&pcch_hdr->nominal) * 1000;
policy->min = policy->cpuinfo.min_freq =
ioread32(&pcch_hdr->minimum_frequency) * 1000;
policy->cur = pcc_get_freq(cpu);
if (!policy->cur) {
pr_debug("init: Unable to get current CPU frequency\n");
result = -EINVAL;
goto out;
}
pr_debug("init: policy->max is %d, policy->min is %d\n",
policy->max, policy->min);

35
drivers/cpufreq/pmac32-cpufreq.c
View file

@ -86,11 +86,6 @@ static struct cpufreq_frequency_table pmac_cpu_freqs[] = {
{0, CPUFREQ_TABLE_END},
};
static struct freq_attr* pmac_cpu_freqs_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static inline void local_delay(unsigned long ms)
{
if (no_schedule)
@ -378,23 +373,12 @@ static unsigned int pmac_cpufreq_get_speed(unsigned int cpu)
return cur_freq;
}
static int pmac_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, pmac_cpu_freqs);
}
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;
@ -402,14 +386,7 @@ static int pmac_cpufreq_target( struct cpufreq_policy *policy,
static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -ENODEV;
policy->cpuinfo.transition_latency = transition_latency;
policy->cur = cur_freq;
cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy, pmac_cpu_freqs);
return cpufreq_generic_init(policy, pmac_cpu_freqs, transition_latency);
}
static u32 read_gpio(struct device_node *np)
@ -469,14 +446,14 @@ static int pmac_cpufreq_resume(struct cpufreq_policy *policy)
}
static struct cpufreq_driver pmac_cpufreq_driver = {
.verify = pmac_cpufreq_verify,
.target = pmac_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = pmac_cpufreq_target,
.get = pmac_cpufreq_get_speed,
.init = pmac_cpufreq_cpu_init,
.suspend = pmac_cpufreq_suspend,
.resume = pmac_cpufreq_resume,
.flags = CPUFREQ_PM_NO_WARN,
.attr = pmac_cpu_freqs_attr,
.attr = cpufreq_generic_attr,
.name = "powermac",
};

56
drivers/cpufreq/pmac64-cpufreq.c
View file

@ -70,11 +70,6 @@ static struct cpufreq_frequency_table g5_cpu_freqs[] = {
{0, CPUFREQ_TABLE_END},
};
static struct freq_attr* g5_cpu_freqs_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
/* Power mode data is an array of the 32 bits PCR values to use for
* the various frequencies, retrieved from the device-tree
*/
@ -142,7 +137,7 @@ static void g5_vdnap_switch_volt(int speed_mode)
pmf_call_one(pfunc_vdnap0_complete, &args);
if (done)
break;
msleep(1);
usleep_range(1000, 1000);
}
if (done == 0)
printk(KERN_WARNING "cpufreq: Timeout in clock slewing !\n");
@ -241,7 +236,7 @@ static void g5_pfunc_switch_volt(int speed_mode)
if (pfunc_cpu1_volt_low)
pmf_call_one(pfunc_cpu1_volt_low, NULL);
}
msleep(10); /* should be faster , to fix */
usleep_range(10000, 10000); /* should be faster , to fix */
}
/*
@ -286,7 +281,7 @@ static int g5_pfunc_switch_freq(int speed_mode)
pmf_call_one(pfunc_slewing_done, &args);
if (done)
break;
msleep(1);
usleep_range(500, 500);
}
if (done == 0)
printk(KERN_WARNING "cpufreq: Timeout in clock slewing !\n");
@ -317,32 +312,18 @@ static int g5_pfunc_query_freq(void)
* Common interface to the cpufreq core
*/
static int g5_cpufreq_verify(struct cpufreq_policy *policy)
static int g5_cpufreq_target(struct cpufreq_policy *policy, unsigned int index)
{
return cpufreq_frequency_table_verify(policy, g5_cpu_freqs);
}
static int g5_cpufreq_target(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
{
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);
@ -357,27 +338,17 @@ static unsigned int g5_cpufreq_get_speed(unsigned int cpu)
static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
policy->cpuinfo.transition_latency = transition_latency;
policy->cur = g5_cpu_freqs[g5_query_freq()].frequency;
/* secondary CPUs are tied to the primary one by the
* cpufreq core if in the secondary policy we tell it that
* it actually must be one policy together with all others. */
cpumask_copy(policy->cpus, cpu_online_mask);
cpufreq_frequency_table_get_attr(g5_cpu_freqs, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy,
g5_cpu_freqs);
return cpufreq_generic_init(policy, g5_cpu_freqs, transition_latency);
}
static struct cpufreq_driver g5_cpufreq_driver = {
.name = "powermac",
.flags = CPUFREQ_CONST_LOOPS,
.init = g5_cpufreq_cpu_init,
.verify = g5_cpufreq_verify,
.target = g5_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = g5_cpufreq_target,
.get = g5_cpufreq_get_speed,
.attr = g5_cpu_freqs_attr,
.attr = cpufreq_generic_attr,
};
@ -397,7 +368,8 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpunode)
/* Check supported platforms */
if (of_machine_is_compatible("PowerMac8,1") ||
of_machine_is_compatible("PowerMac8,2") ||
of_machine_is_compatible("PowerMac9,1"))
of_machine_is_compatible("PowerMac9,1") ||
of_machine_is_compatible("PowerMac12,1"))
use_volts_smu = 1;
else if (of_machine_is_compatible("PowerMac11,2"))
use_volts_vdnap = 1;
@ -647,8 +619,10 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpunode)
g5_cpu_freqs[0].frequency = max_freq;
g5_cpu_freqs[1].frequency = min_freq;
/* Based on a measurement on Xserve G5, rounded up. */
transition_latency = 10 * NSEC_PER_MSEC;
/* Set callbacks */
transition_latency = CPUFREQ_ETERNAL;
g5_switch_volt = g5_pfunc_switch_volt;
g5_switch_freq = g5_pfunc_switch_freq;
g5_query_freq = g5_pfunc_query_freq;

67
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();
@ -100,44 +100,6 @@ static void powernow_k6_set_state(struct cpufreq_policy *policy,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return;
}
/**
* powernow_k6_verify - verifies a new CPUfreq policy
* @policy: new policy
*
* Policy must be within lowest and highest possible CPU Frequency,
* and at least one possible state must be within min and max.
*/
static int powernow_k6_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &clock_ratio[0]);
}
/**
* 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;
}
@ -145,7 +107,6 @@ static int powernow_k6_target(struct cpufreq_policy *policy,
static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
{
unsigned int i, f;
int result;
if (policy->cpu != 0)
return -ENODEV;
@ -165,15 +126,8 @@ static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = 200000;
policy->cur = busfreq * max_multiplier;
result = cpufreq_frequency_table_cpuinfo(policy, clock_ratio);
if (result)
return result;
cpufreq_frequency_table_get_attr(clock_ratio, policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, clock_ratio);
}
@ -182,7 +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;
@ -195,19 +149,14 @@ static unsigned int powernow_k6_get(unsigned int cpu)
return ret;
}
static struct freq_attr *powernow_k6_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver powernow_k6_driver = {
.verify = powernow_k6_verify,
.target = powernow_k6_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = powernow_k6_target,
.init = powernow_k6_cpu_init,
.exit = powernow_k6_cpu_exit,
.get = powernow_k6_get,
.name = "powernow-k6",
.attr = powernow_k6_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id powernow_k6_ids[] = {

42
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;
}
@ -533,27 +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;
}
static int powernow_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, powernow_table);
}
/*
* We use the fact that the bus frequency is somehow
* a multiple of 100000/3 khz, then we compute sgtc according
@ -678,11 +659,7 @@ static int powernow_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency =
cpufreq_scale(2000000UL, fsb, latency);
policy->cur = powernow_get(0);
cpufreq_frequency_table_get_attr(powernow_table, policy->cpu);
return cpufreq_frequency_table_cpuinfo(policy, powernow_table);
return cpufreq_table_validate_and_show(policy, powernow_table);
}
static int powernow_cpu_exit(struct cpufreq_policy *policy)
@ -701,14 +678,9 @@ static int powernow_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static struct freq_attr *powernow_table_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver powernow_driver = {
.verify = powernow_verify,
.target = powernow_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = powernow_target,
.get = powernow_get,
#ifdef CONFIG_X86_POWERNOW_K7_ACPI
.bios_limit = acpi_processor_get_bios_limit,
@ -716,7 +688,7 @@ static struct cpufreq_driver powernow_driver = {
.init = powernow_cpu_init,
.exit = powernow_cpu_exit,
.name = "powernow-k7",
.attr = powernow_table_attr,
.attr = cpufreq_generic_attr,
};
static int __init powernow_init(void)

51
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);
@ -1044,26 +1038,13 @@ 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);
}
/* Driver entry point to verify the policy and range of frequencies */
static int powernowk8_verify(struct cpufreq_policy *pol)
{
struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
if (!data)
return -EINVAL;
return cpufreq_frequency_table_verify(pol, data->powernow_table);
}
struct init_on_cpu {
struct powernow_k8_data *data;
int rc;
@ -1152,11 +1133,8 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
cpumask_copy(pol->cpus, cpu_core_mask(pol->cpu));
data->available_cores = pol->cpus;
pol->cur = find_khz_freq_from_fid(data->currfid);
pr_debug("policy current frequency %d kHz\n", pol->cur);
/* min/max the cpu is capable of */
if (cpufreq_frequency_table_cpuinfo(pol, data->powernow_table)) {
if (cpufreq_table_validate_and_show(pol, data->powernow_table)) {
printk(KERN_ERR FW_BUG PFX "invalid powernow_table\n");
powernow_k8_cpu_exit_acpi(data);
kfree(data->powernow_table);
@ -1164,8 +1142,6 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
return -EINVAL;
}
cpufreq_frequency_table_get_attr(data->powernow_table, pol->cpu);
pr_debug("cpu_init done, current fid 0x%x, vid 0x%x\n",
data->currfid, data->currvid);
@ -1227,20 +1203,15 @@ out:
return khz;
}
static struct freq_attr *powernow_k8_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver cpufreq_amd64_driver = {
.verify = powernowk8_verify,
.target = powernowk8_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = powernowk8_target,
.bios_limit = acpi_processor_get_bios_limit,
.init = powernowk8_cpu_init,
.exit = powernowk8_cpu_exit,
.get = powernowk8_get,
.name = "powernow-k8",
.attr = powernow_k8_attr,
.attr = cpufreq_generic_attr,
};
static void __request_acpi_cpufreq(void)

37
drivers/cpufreq/ppc-corenet-cpufreq.c
View file

@ -202,7 +202,7 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy)
table[i].frequency = CPUFREQ_TABLE_END;
/* set the min and max frequency properly */
ret = cpufreq_frequency_table_cpuinfo(policy, table);
ret = cpufreq_table_validate_and_show(policy, table);
if (ret) {
pr_err("invalid frequency table: %d\n", ret);
goto err_nomem1;
@ -217,9 +217,6 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy)
per_cpu(cpu_data, i) = data;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = corenet_cpufreq_get_speed(policy->cpu);
cpufreq_frequency_table_get_attr(table, cpu);
of_node_put(np);
return 0;
@ -253,36 +250,21 @@ static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static int corenet_cpufreq_verify(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *table =
per_cpu(cpu_data, policy->cpu)->table;
return cpufreq_frequency_table_verify(policy, table);
}
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;
@ -293,20 +275,15 @@ static int corenet_cpufreq_target(struct cpufreq_policy *policy,
return ret;
}
static struct freq_attr *corenet_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
.name = "ppc_cpufreq",
.flags = CPUFREQ_CONST_LOOPS,
.init = corenet_cpufreq_cpu_init,
.exit = __exit_p(corenet_cpufreq_cpu_exit),
.verify = corenet_cpufreq_verify,
.target = corenet_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = corenet_cpufreq_target,
.get = corenet_cpufreq_get_speed,
.attr = corenet_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static const struct of_device_id node_matches[] __initdata = {

31
drivers/cpufreq/ppc_cbe_cpufreq.c
View file

@ -123,37 +123,16 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
cpumask_copy(policy->cpus, cpu_sibling_mask(policy->cpu));
#endif
cpufreq_frequency_table_get_attr(cbe_freqs, policy->cpu);
/* this ensures that policy->cpuinfo_min
* and policy->cpuinfo_max are set correctly */
return cpufreq_frequency_table_cpuinfo(policy, cbe_freqs);
}
static int cbe_cpufreq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static int cbe_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, cbe_freqs);
return cpufreq_table_validate_and_show(policy, cbe_freqs);
}
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;
@ -176,10 +155,10 @@ static int cbe_cpufreq_target(struct cpufreq_policy *policy,
}
static struct cpufreq_driver cbe_cpufreq_driver = {
.verify = cbe_cpufreq_verify,
.target = cbe_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = cbe_cpufreq_target,
.init = cbe_cpufreq_cpu_init,
.exit = cbe_cpufreq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "cbe-cpufreq",
.flags = CPUFREQ_CONST_LOOPS,
};

43
drivers/cpufreq/pxa2xx-cpufreq.c
View file

@ -262,36 +262,16 @@ static u32 mdrefr_dri(unsigned int freq)
return (interval - (cpu_is_pxa27x() ? 31 : 0)) / 32;
}
/* find a valid frequency point */
static int pxa_verify_policy(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *pxa_freqs_table;
pxa_freqs_t *pxa_freqs;
int ret;
find_freq_tables(&pxa_freqs_table, &pxa_freqs);
ret = cpufreq_frequency_table_verify(policy, pxa_freqs_table);
if (freq_debug)
pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n",
policy->min, policy->max);
return ret;
}
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;
@ -300,12 +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;
@ -414,8 +388,6 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
/* set default policy and cpuinfo */
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
policy->cur = get_clk_frequency_khz(0); /* current freq */
policy->min = policy->max = policy->cur;
/* Generate pxa25x the run cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA25x_RUN_FREQS; i++) {
@ -453,10 +425,12 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
find_freq_tables(&pxa255_freq_table, &pxa255_freqs);
pr_info("PXA255 cpufreq using %s frequency table\n",
pxa255_turbo_table ? "turbo" : "run");
cpufreq_frequency_table_cpuinfo(policy, pxa255_freq_table);
cpufreq_table_validate_and_show(policy, pxa255_freq_table);
}
else if (cpu_is_pxa27x()) {
cpufreq_table_validate_and_show(policy, pxa27x_freq_table);
}
else if (cpu_is_pxa27x())
cpufreq_frequency_table_cpuinfo(policy, pxa27x_freq_table);
printk(KERN_INFO "PXA CPU frequency change support initialized\n");
@ -464,9 +438,10 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
}
static struct cpufreq_driver pxa_cpufreq_driver = {
.verify = pxa_verify_policy,
.target = pxa_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = pxa_set_target,
.init = pxa_cpufreq_init,
.exit = cpufreq_generic_exit,
.get = pxa_cpufreq_get,
.name = "PXA2xx",
};

34
drivers/cpufreq/pxa3xx-cpufreq.c
View file

@ -108,7 +108,7 @@ static int setup_freqs_table(struct cpufreq_policy *policy,
pxa3xx_freqs_num = num;
pxa3xx_freqs_table = table;
return cpufreq_frequency_table_cpuinfo(policy, table);
return cpufreq_table_validate_and_show(policy, table);
}
static void __update_core_freq(struct pxa3xx_freq_info *info)
@ -150,34 +150,21 @@ static void __update_bus_freq(struct pxa3xx_freq_info *info)
cpu_relax();
}
static int pxa3xx_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, pxa3xx_freqs_table);
}
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;
@ -186,9 +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);
@ -206,11 +190,10 @@ static int pxa3xx_cpufreq_init(struct cpufreq_policy *policy)
int ret = -EINVAL;
/* set default policy and cpuinfo */
policy->cpuinfo.min_freq = 104000;
policy->cpuinfo.max_freq = (cpu_is_pxa320()) ? 806000 : 624000;
policy->min = policy->cpuinfo.min_freq = 104000;
policy->max = policy->cpuinfo.max_freq =
(cpu_is_pxa320()) ? 806000 : 624000;
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
policy->max = pxa3xx_get_clk_frequency_khz(0);
policy->cur = policy->min = policy->max;
if (cpu_is_pxa300() || cpu_is_pxa310())
ret = setup_freqs_table(policy, pxa300_freqs,
@ -230,9 +213,10 @@ static int pxa3xx_cpufreq_init(struct cpufreq_policy *policy)
}
static struct cpufreq_driver pxa3xx_cpufreq_driver = {
.verify = pxa3xx_cpufreq_verify,
.target = pxa3xx_cpufreq_set,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = pxa3xx_cpufreq_set,
.init = pxa3xx_cpufreq_init,
.exit = cpufreq_generic_exit,
.get = pxa3xx_cpufreq_get,
.name = "pxa3xx-cpufreq",
};

46
drivers/cpufreq/s3c2416-cpufreq.c
View file

@ -87,16 +87,6 @@ static struct cpufreq_frequency_table s3c2450_freq_table[] = {
{ 0, CPUFREQ_TABLE_END },
};
static int s3c2416_cpufreq_verify_speed(struct cpufreq_policy *policy)
{
struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
if (policy->cpu != 0)
return -EINVAL;
return cpufreq_frequency_table_verify(policy, s3c_freq->freq_table);
}
static unsigned int s3c2416_cpufreq_get_speed(unsigned int cpu)
{
struct s3c2416_data *s3c_freq = &s3c2416_cpufreq;
@ -227,24 +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;
@ -266,7 +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);
@ -486,20 +467,14 @@ static int __init s3c2416_cpufreq_driver_init(struct cpufreq_policy *policy)
freq++;
}
policy->cur = clk_get_rate(s3c_freq->armclk) / 1000;
/* Datasheet says PLL stabalisation time must be at least 300us,
* so but add some fudge. (reference in LOCKCON0 register description)
*/
policy->cpuinfo.transition_latency = (500 * 1000) +
s3c_freq->regulator_latency;
ret = cpufreq_frequency_table_cpuinfo(policy, s3c_freq->freq_table);
ret = cpufreq_generic_init(policy, s3c_freq->freq_table,
(500 * 1000) + s3c_freq->regulator_latency);
if (ret)
goto err_freq_table;
cpufreq_frequency_table_get_attr(s3c_freq->freq_table, 0);
register_reboot_notifier(&s3c2416_cpufreq_reboot_notifier);
return 0;
@ -518,19 +493,14 @@ err_hclk:
return ret;
}
static struct freq_attr *s3c2416_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver s3c2416_cpufreq_driver = {
.flags = 0,
.verify = s3c2416_cpufreq_verify_speed,
.target = s3c2416_cpufreq_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s3c2416_cpufreq_set_target,
.get = s3c2416_cpufreq_get_speed,
.init = s3c2416_cpufreq_driver_init,
.name = "s3c2416",
.attr = s3c2416_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int __init s3c2416_cpufreq_init(void)

27
drivers/cpufreq/s3c24xx-cpufreq.c
View file

@ -373,23 +373,7 @@ struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
static int s3c_cpufreq_init(struct cpufreq_policy *policy)
{
printk(KERN_INFO "%s: initialising policy %p\n", __func__, policy);
if (policy->cpu != 0)
return -EINVAL;
policy->cur = s3c_cpufreq_get(0);
policy->min = policy->cpuinfo.min_freq = 0;
policy->max = policy->cpuinfo.max_freq = cpu_cur.info->max.fclk / 1000;
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
/* feed the latency information from the cpu driver */
policy->cpuinfo.transition_latency = cpu_cur.info->latency;
if (ftab)
cpufreq_frequency_table_cpuinfo(policy, ftab);
return 0;
return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
}
static int __init s3c_cpufreq_initclks(void)
@ -416,14 +400,6 @@ static int __init s3c_cpufreq_initclks(void)
return 0;
}
static int s3c_cpufreq_verify(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
return 0;
}
#ifdef CONFIG_PM
static struct cpufreq_frequency_table suspend_pll;
static unsigned int suspend_freq;
@ -473,7 +449,6 @@ static int s3c_cpufreq_resume(struct cpufreq_policy *policy)
static struct cpufreq_driver s3c24xx_driver = {
.flags = CPUFREQ_STICKY,
.verify = s3c_cpufreq_verify,
.target = s3c_cpufreq_target,
.get = s3c_cpufreq_get,
.init = s3c_cpufreq_init,

35
drivers/cpufreq/s3c64xx-cpufreq.c
View file

@ -54,14 +54,6 @@ static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
};
#endif
static int s3c64xx_cpufreq_verify_speed(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
return cpufreq_frequency_table_verify(policy, s3c64xx_freq_table);
}
static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
{
if (cpu != 0)
@ -71,26 +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);
@ -243,15 +225,12 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
freq++;
}
policy->cur = clk_get_rate(armclk) / 1000;
/* Datasheet says PLL stabalisation time (if we were to use
* the PLLs, which we don't currently) is ~300us worst case,
* but add some fudge.
*/
policy->cpuinfo.transition_latency = (500 * 1000) + regulator_latency;
ret = cpufreq_frequency_table_cpuinfo(policy, s3c64xx_freq_table);
ret = cpufreq_generic_init(policy, s3c64xx_freq_table,
(500 * 1000) + regulator_latency);
if (ret != 0) {
pr_err("Failed to configure frequency table: %d\n",
ret);
@ -264,8 +243,8 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
static struct cpufreq_driver s3c64xx_cpufreq_driver = {
.flags = 0,
.verify = s3c64xx_cpufreq_verify_speed,
.target = s3c64xx_cpufreq_set_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s3c64xx_cpufreq_set_target,
.get = s3c64xx_cpufreq_get_speed,
.init = s3c64xx_cpufreq_driver_init,
.name = "s3c",

72
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;
/*
@ -174,14 +165,6 @@ static void s5pv210_set_refresh(enum s5pv210_dmc_port ch, unsigned long freq)
__raw_writel(tmp1, reg);
}
static int s5pv210_verify_speed(struct cpufreq_policy *policy)
{
if (policy->cpu)
return -EINVAL;
return cpufreq_frequency_table_verify(policy, s5pv210_freq_table);
}
static unsigned int s5pv210_getspeed(unsigned int cpu)
{
if (cpu)
@ -190,12 +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;
@ -203,9 +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"
@ -215,27 +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;
}
@ -551,13 +515,7 @@ static int __init s5pv210_cpu_init(struct cpufreq_policy *policy)
s5pv210_dram_conf[1].refresh = (__raw_readl(S5P_VA_DMC1 + 0x30) * 1000);
s5pv210_dram_conf[1].freq = clk_get_rate(dmc1_clk);
policy->cur = policy->min = policy->max = s5pv210_getspeed(0);
cpufreq_frequency_table_get_attr(s5pv210_freq_table, policy->cpu);
policy->cpuinfo.transition_latency = 40000;
return cpufreq_frequency_table_cpuinfo(policy, s5pv210_freq_table);
return cpufreq_generic_init(policy, s5pv210_freq_table, 40000);
out_dmc1:
clk_put(dmc0_clk);
@ -573,16 +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;
}
@ -595,18 +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 = s5pv210_verify_speed,
.target = s5pv210_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = s5pv210_target,
.get = s5pv210_getspeed,
.init = s5pv210_cpu_init,
.name = "s5pv210",

34
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);
@ -218,19 +202,13 @@ static int sa1100_target(struct cpufreq_policy *policy,
static int __init sa1100_cpu_init(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
policy->cur = policy->min = policy->max = sa11x0_getspeed(0);
policy->cpuinfo.min_freq = 59000;
policy->cpuinfo.max_freq = 287000;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
return 0;
return cpufreq_generic_init(policy, sa11x0_freq_table, CPUFREQ_ETERNAL);
}
static struct cpufreq_driver sa1100_driver __refdata = {
.flags = CPUFREQ_STICKY,
.verify = sa11x0_verify_speed,
.target = sa1100_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = sa1100_target,
.get = sa11x0_getspeed,
.init = sa1100_cpu_init,
.name = "sa1100",

36
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);
@ -332,21 +314,15 @@ static int sa1110_target(struct cpufreq_policy *policy,
static int __init sa1110_cpu_init(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
policy->cur = policy->min = policy->max = sa11x0_getspeed(0);
policy->cpuinfo.min_freq = 59000;
policy->cpuinfo.max_freq = 287000;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
return 0;
return cpufreq_generic_init(policy, sa11x0_freq_table, CPUFREQ_ETERNAL);
}
/* sa1110_driver needs __refdata because it must remain after init registers
* it with cpufreq_register_driver() */
static struct cpufreq_driver sa1110_driver __refdata = {
.flags = CPUFREQ_STICKY,
.verify = sa11x0_verify_speed,
.target = sa1110_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = sa1110_target,
.get = sa11x0_getspeed,
.init = sa1110_cpu_init,
.name = "sa1110",

53
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;
@ -76,29 +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_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &sc520_freq_table[0]);
}
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
*/
@ -106,7 +86,6 @@ static int sc520_freq_target(struct cpufreq_policy *policy,
static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
{
struct cpuinfo_x86 *c = &cpu_data(0);
int result;
/* capability check */
if (c->x86_vendor != X86_VENDOR_AMD ||
@ -115,39 +94,19 @@ static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = 1000000; /* 1ms */
policy->cur = sc520_freq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, sc520_freq_table);
if (result)
return result;
cpufreq_frequency_table_get_attr(sc520_freq_table, policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, sc520_freq_table);
}
static int sc520_freq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *sc520_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver sc520_freq_driver = {
.get = sc520_freq_get_cpu_frequency,
.verify = sc520_freq_verify,
.target = sc520_freq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = sc520_freq_target,
.init = sc520_freq_cpu_init,
.exit = sc520_freq_cpu_exit,
.exit = cpufreq_generic_exit,
.name = "sc520_freq",
.attr = sc520_freq_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id sc520_ids[] = {

22
drivers/cpufreq/sh-cpufreq.c
View file

@ -87,15 +87,12 @@ static int sh_cpufreq_verify(struct cpufreq_policy *policy)
if (freq_table)
return cpufreq_frequency_table_verify(policy, freq_table);
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
policy->min = (clk_round_rate(cpuclk, 1) + 500) / 1000;
policy->max = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
return 0;
}
@ -114,15 +111,13 @@ static int sh_cpufreq_cpu_init(struct cpufreq_policy *policy)
return PTR_ERR(cpuclk);
}
policy->cur = sh_cpufreq_get(cpu);
freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
if (freq_table) {
int result;
result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
if (!result)
cpufreq_frequency_table_get_attr(freq_table, cpu);
result = cpufreq_table_validate_and_show(policy, freq_table);
if (result)
return result;
} else {
dev_notice(dev, "no frequency table found, falling back "
"to rate rounding.\n");
@ -154,11 +149,6 @@ static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static struct freq_attr *sh_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver sh_cpufreq_driver = {
.name = "sh",
.get = sh_cpufreq_get,
@ -166,7 +156,7 @@ static struct cpufreq_driver sh_cpufreq_driver = {
.verify = sh_cpufreq_verify,
.init = sh_cpufreq_cpu_init,
.exit = sh_cpufreq_cpu_exit,
.attr = sh_freq_attr,
.attr = cpufreq_generic_attr,
};
static int __init sh_cpufreq_module_init(void)

35
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;
@ -277,30 +276,10 @@ 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;
}
static int us2e_freq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
&us2e_freq_table[policy->cpu].table[0]);
}
static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
{
unsigned int cpu = policy->cpu;
@ -324,13 +303,15 @@ static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = 0;
policy->cur = clock_tick;
return cpufreq_frequency_table_cpuinfo(policy, table);
return cpufreq_table_validate_and_show(policy, table);
}
static int us2e_freq_cpu_exit(struct cpufreq_policy *policy)
{
if (cpufreq_us2e_driver)
us2e_set_cpu_divider_index(policy, 0);
if (cpufreq_us2e_driver) {
cpufreq_frequency_table_put_attr(policy->cpu);
us2e_freq_target(policy, 0);
}
return 0;
}
@ -361,8 +342,8 @@ static int __init us2e_freq_init(void)
goto err_out;
driver->init = us2e_freq_cpu_init;
driver->verify = us2e_freq_verify;
driver->target = us2e_freq_target;
driver->verify = cpufreq_generic_frequency_table_verify;
driver->target_index = us2e_freq_target;
driver->get = us2e_freq_get;
driver->exit = us2e_freq_cpu_exit;
strcpy(driver->name, "UltraSPARC-IIe");

37
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;
@ -136,32 +135,10 @@ 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;
}
static int us3_freq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
&us3_freq_table[policy->cpu].table[0]);
}
static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
{
unsigned int cpu = policy->cpu;
@ -181,13 +158,15 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency = 0;
policy->cur = clock_tick;
return cpufreq_frequency_table_cpuinfo(policy, table);
return cpufreq_table_validate_and_show(policy, table);
}
static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
{
if (cpufreq_us3_driver)
us3_set_cpu_divider_index(policy, 0);
if (cpufreq_us3_driver) {
cpufreq_frequency_table_put_attr(policy->cpu);
us3_freq_target(policy, 0);
}
return 0;
}
@ -222,8 +201,8 @@ static int __init us3_freq_init(void)
goto err_out;
driver->init = us3_freq_cpu_init;
driver->verify = us3_freq_verify;
driver->target = us3_freq_target;
driver->verify = cpufreq_generic_frequency_table_verify;
driver->target_index = us3_freq_target;
driver->get = us3_freq_get;
driver->exit = us3_freq_cpu_exit;
strcpy(driver->name, "UltraSPARC-III");

51
drivers/cpufreq/spear-cpufreq.c
View file

@ -30,11 +30,6 @@ static struct {
u32 cnt;
} spear_cpufreq;
static int spear_cpufreq_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, spear_cpufreq.freq_tbl);
}
static unsigned int spear_cpufreq_get(unsigned int cpu)
{
return clk_get_rate(spear_cpufreq.clk) / 1000;
@ -110,20 +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
@ -176,43 +167,19 @@ static int spear_cpufreq_target(struct cpufreq_policy *policy,
static int spear_cpufreq_init(struct cpufreq_policy *policy)
{
int ret;
ret = cpufreq_frequency_table_cpuinfo(policy, spear_cpufreq.freq_tbl);
if (ret) {
pr_err("cpufreq_frequency_table_cpuinfo() failed");
return ret;
}
cpufreq_frequency_table_get_attr(spear_cpufreq.freq_tbl, policy->cpu);
policy->cpuinfo.transition_latency = spear_cpufreq.transition_latency;
policy->cur = spear_cpufreq_get(0);
cpumask_setall(policy->cpus);
return 0;
return cpufreq_generic_init(policy, spear_cpufreq.freq_tbl,
spear_cpufreq.transition_latency);
}
static int spear_cpufreq_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *spear_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver spear_cpufreq_driver = {
.name = "cpufreq-spear",
.flags = CPUFREQ_STICKY,
.verify = spear_cpufreq_verify,
.target = spear_cpufreq_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = spear_cpufreq_target,
.get = spear_cpufreq_get,
.init = spear_cpufreq_init,
.exit = spear_cpufreq_exit,
.attr = spear_cpufreq_attr,
.exit = cpufreq_generic_exit,
.attr = cpufreq_generic_attr,
};
static int spear_cpufreq_driver_init(void)

67
drivers/cpufreq/speedstep-centrino.c
View file

@ -343,9 +343,7 @@ static unsigned int get_cur_freq(unsigned int cpu)
static int centrino_cpu_init(struct cpufreq_policy *policy)
{
struct cpuinfo_x86 *cpu = &cpu_data(policy->cpu);
unsigned freq;
unsigned l, h;
int ret;
int i;
/* Only Intel makes Enhanced Speedstep-capable CPUs */
@ -373,9 +371,8 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
return -ENODEV;
}
if (centrino_cpu_init_table(policy)) {
if (centrino_cpu_init_table(policy))
return -ENODEV;
}
/* Check to see if Enhanced SpeedStep is enabled, and try to
enable it if not. */
@ -395,22 +392,11 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
}
}
freq = get_cur_freq(policy->cpu);
policy->cpuinfo.transition_latency = 10000;
/* 10uS transition latency */
policy->cur = freq;
pr_debug("centrino_cpu_init: cur=%dkHz\n", policy->cur);
ret = cpufreq_frequency_table_cpuinfo(policy,
return cpufreq_table_validate_and_show(policy,
per_cpu(centrino_model, policy->cpu)->op_points);
if (ret)
return (ret);
cpufreq_frequency_table_get_attr(
per_cpu(centrino_model, policy->cpu)->op_points, policy->cpu);
return 0;
}
static int centrino_cpu_exit(struct cpufreq_policy *policy)
@ -427,37 +413,20 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
/**
* centrino_verify - verifies a new CPUFreq policy
* @policy: new policy
*
* Limit must be within this model's frequency range at least one
* border included.
*/
static int centrino_verify (struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy,
per_cpu(centrino_model, policy->cpu)->op_points);
}
/**
* 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)))
@ -468,16 +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;
@ -501,7 +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);
@ -516,7 +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);
@ -561,20 +523,15 @@ out:
return retval;
}
static struct freq_attr* centrino_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver centrino_driver = {
.name = "centrino", /* should be speedstep-centrino,
but there's a 16 char limit */
.init = centrino_cpu_init,
.exit = centrino_cpu_exit,
.verify = centrino_verify,
.target = centrino_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = centrino_target,
.get = get_cur_freq,
.attr = centrino_attr,
.attr = cpufreq_generic_attr,
};
/*

78
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);
@ -289,18 +277,6 @@ static int speedstep_target(struct cpufreq_policy *policy,
}
/**
* speedstep_verify - verifies a new CPUFreq policy
* @policy: new policy
*
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* at least one border included.
*/
static int speedstep_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &speedstep_freqs[0]);
}
struct get_freqs {
struct cpufreq_policy *policy;
int ret;
@ -320,8 +296,7 @@ static void get_freqs_on_cpu(void *_get_freqs)
static int speedstep_cpu_init(struct cpufreq_policy *policy)
{
int result;
unsigned int policy_cpu, speed;
unsigned int policy_cpu;
struct get_freqs gf;
/* only run on CPU to be set, or on its sibling */
@ -336,49 +311,18 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
if (gf.ret)
return gf.ret;
/* get current speed setting */
speed = speedstep_get(policy_cpu);
if (!speed)
return -EIO;
pr_debug("currently at %s speed setting - %i MHz\n",
(speed == speedstep_freqs[SPEEDSTEP_LOW].frequency)
? "low" : "high",
(speed / 1000));
/* cpuinfo and default policy values */
policy->cur = speed;
result = cpufreq_frequency_table_cpuinfo(policy, speedstep_freqs);
if (result)
return result;
cpufreq_frequency_table_get_attr(speedstep_freqs, policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, speedstep_freqs);
}
static int speedstep_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr *speedstep_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver speedstep_driver = {
.name = "speedstep-ich",
.verify = speedstep_verify,
.target = speedstep_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = speedstep_target,
.init = speedstep_cpu_init,
.exit = speedstep_cpu_exit,
.exit = cpufreq_generic_exit,
.get = speedstep_get,
.attr = speedstep_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id ss_smi_ids[] = {

71
drivers/cpufreq/speedstep-smi.c
View file

@ -235,52 +235,28 @@ 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;
}
/**
* speedstep_verify - verifies a new CPUFreq policy
* @policy: new policy
*
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* at least one border included.
*/
static int speedstep_verify(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &speedstep_freqs[0]);
}
static int speedstep_cpu_init(struct cpufreq_policy *policy)
{
int result;
unsigned int speed, state;
unsigned int *low, *high;
/* capability check */
@ -316,32 +292,8 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
pr_debug("workaround worked.\n");
}
/* get current speed setting */
state = speedstep_get_state();
speed = speedstep_freqs[state].frequency;
pr_debug("currently at %s speed setting - %i MHz\n",
(speed == speedstep_freqs[SPEEDSTEP_LOW].frequency)
? "low" : "high",
(speed / 1000));
/* cpuinfo and default policy values */
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = speed;
result = cpufreq_frequency_table_cpuinfo(policy, speedstep_freqs);
if (result)
return result;
cpufreq_frequency_table_get_attr(speedstep_freqs, policy->cpu);
return 0;
}
static int speedstep_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
return cpufreq_table_validate_and_show(policy, speedstep_freqs);
}
static unsigned int speedstep_get(unsigned int cpu)
@ -362,20 +314,15 @@ static int speedstep_resume(struct cpufreq_policy *policy)
return result;
}
static struct freq_attr *speedstep_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver speedstep_driver = {
.name = "speedstep-smi",
.verify = speedstep_verify,
.target = speedstep_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = speedstep_target,
.init = speedstep_cpu_init,
.exit = speedstep_cpu_exit,
.exit = cpufreq_generic_exit,
.get = speedstep_get,
.resume = speedstep_resume,
.attr = speedstep_attr,
.attr = cpufreq_generic_attr,
};
static const struct x86_cpu_id ss_smi_ids[] = {

45
drivers/cpufreq/tegra-cpufreq.c
View file

@ -51,11 +51,6 @@ static unsigned long target_cpu_speed[NUM_CPUS];
static DEFINE_MUTEX(tegra_cpu_lock);
static bool is_suspended;
static int tegra_verify_speed(struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, freq_table);
}
static unsigned int tegra_getspeed(unsigned int cpu)
{
unsigned long rate;
@ -155,11 +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;
@ -170,10 +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;
@ -209,21 +198,23 @@ static struct notifier_block tegra_cpu_pm_notifier = {
static int tegra_cpu_init(struct cpufreq_policy *policy)
{
int ret;
if (policy->cpu >= NUM_CPUS)
return -EINVAL;
clk_prepare_enable(emc_clk);
clk_prepare_enable(cpu_clk);
cpufreq_frequency_table_cpuinfo(policy, freq_table);
cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
policy->cur = tegra_getspeed(policy->cpu);
target_cpu_speed[policy->cpu] = policy->cur;
target_cpu_speed[policy->cpu] = tegra_getspeed(policy->cpu);
/* FIXME: what's the actual transition time? */
policy->cpuinfo.transition_latency = 300 * 1000;
cpumask_copy(policy->cpus, cpu_possible_mask);
ret = cpufreq_generic_init(policy, freq_table, 300 * 1000);
if (ret) {
clk_disable_unprepare(cpu_clk);
clk_disable_unprepare(emc_clk);
return ret;
}
if (policy->cpu == 0)
register_pm_notifier(&tegra_cpu_pm_notifier);
@ -233,24 +224,20 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
static int tegra_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_cpuinfo(policy, freq_table);
cpufreq_frequency_table_put_attr(policy->cpu);
clk_disable_unprepare(cpu_clk);
clk_disable_unprepare(emc_clk);
return 0;
}
static struct freq_attr *tegra_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver tegra_cpufreq_driver = {
.verify = tegra_verify_speed,
.target = tegra_target,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = tegra_target,
.get = tegra_getspeed,
.init = tegra_cpu_init,
.exit = tegra_cpu_exit,
.name = "tegra",
.attr = tegra_cpufreq_attr,
.attr = cpufreq_generic_attr,
};
static int __init tegra_cpufreq_init(void)

5
drivers/cpufreq/unicore2-cpufreq.c
View file

@ -29,9 +29,7 @@ static int ucv2_verify_speed(struct cpufreq_policy *policy)
if (policy->cpu)
return -EINVAL;
cpufreq_verify_within_limits(policy,
policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
cpufreq_verify_within_cpu_limits(policy);
return 0;
}
@ -68,7 +66,6 @@ static int __init ucv2_cpu_init(struct cpufreq_policy *policy)
{
if (policy->cpu != 0)
return -EINVAL;
policy->cur = ucv2_getspeed(0);
policy->min = policy->cpuinfo.min_freq = 250000;
policy->max = policy->cpuinfo.max_freq = 1000000;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;