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Merge branch 'pm-cpufreq' 

* pm-cpufreq:
  cpufreq: ppc: Remove duplicate inclusion of fsl_soc.h
  cpufreq: create another field .flags in cpufreq_frequency_table
  cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table
  cpufreq: don't print value of .driver_data from core
  cpufreq: ia64: don't set .driver_data to index
  cpufreq: powernv: Select CPUFreq related Kconfig options for powernv
  cpufreq: powernv: Use cpufreq_frequency_table.driver_data to store pstate ids
  cpufreq: powernv: cpufreq driver for powernv platform
  cpufreq: at32ap: don't declare local variable as static
  cpufreq: loongson2_cpufreq: don't declare local variable as static
  cpufreq: unicore32: fix typo issue for 'clk'
  cpufreq: exynos: Disable on multiplatform build
This commit is contained in:
Rafael J. Wysocki 2014-04-08 13:28:02 +02:00
parent 8c73c4d831 f334a1e843
commit fe10739284
41 changed files with 535 additions and 177 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/mips/loongson/lemote-2f/clock.c
View File

@ -28,16 +28,16 @@ enum {
};
struct cpufreq_frequency_table loongson2_clockmod_table[] = {
{DC_RESV, CPUFREQ_ENTRY_INVALID},
{DC_ZERO, CPUFREQ_ENTRY_INVALID},
{DC_25PT, 0},
{DC_37PT, 0},
{DC_50PT, 0},
{DC_62PT, 0},
{DC_75PT, 0},
{DC_87PT, 0},
{DC_DISABLE, 0},
{DC_RESV, CPUFREQ_TABLE_END},
{0, DC_RESV, CPUFREQ_ENTRY_INVALID},
{0, DC_ZERO, CPUFREQ_ENTRY_INVALID},
{0, DC_25PT, 0},
{0, DC_37PT, 0},
{0, DC_50PT, 0},
{0, DC_62PT, 0},
{0, DC_75PT, 0},
{0, DC_87PT, 0},
{0, DC_DISABLE, 0},
{0, DC_RESV, CPUFREQ_TABLE_END},
};
EXPORT_SYMBOL_GPL(loongson2_clockmod_table);

1
arch/powerpc/configs/pseries_defconfig
View File

@ -306,3 +306,4 @@ CONFIG_KVM_BOOK3S_64=m
CONFIG_KVM_BOOK3S_64_HV=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y

1
arch/powerpc/configs/pseries_le_defconfig
View File

@ -301,3 +301,4 @@ CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y

4
arch/powerpc/include/asm/reg.h
View File

@ -272,6 +272,10 @@
#define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */
#define SPRN_IC 0x350 /* Virtual Instruction Count */
#define SPRN_VTB 0x351 /* Virtual Time Base */
#define SPRN_PMICR 0x354 /* Power Management Idle Control Reg */
#define SPRN_PMSR 0x355 /* Power Management Status Reg */
#define SPRN_PMCR 0x374 /* Power Management Control Register */
/* HFSCR and FSCR bit numbers are the same */
#define FSCR_TAR_LG 8 /* Enable Target Address Register */
#define FSCR_EBB_LG 7 /* Enable Event Based Branching */

6
arch/powerpc/platforms/powernv/Kconfig
View File

@ -11,6 +11,12 @@ config PPC_POWERNV
select PPC_UDBG_16550
select PPC_SCOM
select ARCH_RANDOM
select CPU_FREQ
select CPU_FREQ_GOV_PERFORMANCE
select CPU_FREQ_GOV_POWERSAVE
select CPU_FREQ_GOV_USERSPACE
select CPU_FREQ_GOV_ONDEMAND
select CPU_FREQ_GOV_CONSERVATIVE
default y
config PPC_POWERNV_RTAS

6
drivers/cpufreq/Kconfig.arm
View File

@ -30,7 +30,7 @@ config ARM_EXYNOS_CPUFREQ
config ARM_EXYNOS4210_CPUFREQ
bool "SAMSUNG EXYNOS4210"
depends on CPU_EXYNOS4210
depends on CPU_EXYNOS4210 && !ARCH_MULTIPLATFORM
default y
select ARM_EXYNOS_CPUFREQ
help
@ -41,7 +41,7 @@ config ARM_EXYNOS4210_CPUFREQ
config ARM_EXYNOS4X12_CPUFREQ
bool "SAMSUNG EXYNOS4x12"
depends on (SOC_EXYNOS4212 || SOC_EXYNOS4412)
depends on (SOC_EXYNOS4212 || SOC_EXYNOS4412) && !ARCH_MULTIPLATFORM
default y
select ARM_EXYNOS_CPUFREQ
help
@ -52,7 +52,7 @@ config ARM_EXYNOS4X12_CPUFREQ
config ARM_EXYNOS5250_CPUFREQ
bool "SAMSUNG EXYNOS5250"
depends on SOC_EXYNOS5250
depends on SOC_EXYNOS5250 && !ARCH_MULTIPLATFORM
default y
select ARM_EXYNOS_CPUFREQ
help

8
drivers/cpufreq/Kconfig.powerpc
View File

@ -54,3 +54,11 @@ config PPC_PASEMI_CPUFREQ
help
This adds the support for frequency switching on PA Semi
PWRficient processors.
config POWERNV_CPUFREQ
tristate "CPU frequency scaling for IBM POWERNV platform"
depends on PPC_POWERNV
default y
help
This adds support for CPU frequency switching on IBM POWERNV
platform

1
drivers/cpufreq/Makefile
View File

@ -86,6 +86,7 @@ obj-$(CONFIG_PPC_CORENET_CPUFREQ) += ppc-corenet-cpufreq.o
obj-$(CONFIG_CPU_FREQ_PMAC) += pmac32-cpufreq.o
obj-$(CONFIG_CPU_FREQ_PMAC64) += pmac64-cpufreq.o
obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += pasemi-cpufreq.o
obj-$(CONFIG_POWERNV_CPUFREQ) += powernv-cpufreq.o
##################################################################################
# Other platform drivers

2
drivers/cpufreq/acpi-cpufreq.c
View File

@ -754,7 +754,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
goto err_unreg;
}
data->freq_table = kmalloc(sizeof(*data->freq_table) *
data->freq_table = kzalloc(sizeof(*data->freq_table) *
(perf->state_count+1), GFP_KERNEL);
if (!data->freq_table) {
result = -ENOMEM;

2
drivers/cpufreq/at32ap-cpufreq.c
View File

@ -52,7 +52,7 @@ static int at32_set_target(struct cpufreq_policy *policy, unsigned int index)
static int at32_cpufreq_driver_init(struct cpufreq_policy *policy)
{
unsigned int frequency, rate, min_freq;
static struct clk *cpuclk;
struct clk *cpuclk;
int retval, steps, i;
if (policy->cpu != 0)

6
drivers/cpufreq/cris-artpec3-cpufreq.c
View File

@ -15,9 +15,9 @@ static struct notifier_block cris_sdram_freq_notifier_block = {
};
static struct cpufreq_frequency_table cris_freq_table[] = {
{0x01, 6000},
{0x02, 200000},
{0, CPUFREQ_TABLE_END},
{0, 0x01, 6000},
{0, 0x02, 200000},
{0, 0, CPUFREQ_TABLE_END},
};
static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)

6
drivers/cpufreq/cris-etraxfs-cpufreq.c
View File

@ -15,9 +15,9 @@ static struct notifier_block cris_sdram_freq_notifier_block = {
};
static struct cpufreq_frequency_table cris_freq_table[] = {
{0x01, 6000},
{0x02, 200000},
{0, CPUFREQ_TABLE_END},
{0, 0x01, 6000},
{0, 0x02, 200000},
{0, 0, CPUFREQ_TABLE_END},
};
static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)

18
drivers/cpufreq/elanfreq.c
View File

@ -56,15 +56,15 @@ static struct s_elan_multiplier elan_multiplier[] = {
};
static struct cpufreq_frequency_table elanfreq_table[] = {
{0, 1000},
{1, 2000},
{2, 4000},
{3, 8000},
{4, 16000},
{5, 33000},
{6, 66000},
{7, 99000},
{0, CPUFREQ_TABLE_END},
{0, 0, 1000},
{0, 1, 2000},
{0, 2, 4000},
{0, 3, 8000},
{0, 4, 16000},
{0, 5, 33000},
{0, 6, 66000},
{0, 7, 99000},
{0, 0, CPUFREQ_TABLE_END},
};

12
drivers/cpufreq/exynos4210-cpufreq.c
View File

@ -29,12 +29,12 @@ static unsigned int exynos4210_volt_table[] = {
};
static struct cpufreq_frequency_table exynos4210_freq_table[] = {
{L0, 1200 * 1000},
{L1, 1000 * 1000},
{L2, 800 * 1000},
{L3, 500 * 1000},
{L4, 200 * 1000},
{0, CPUFREQ_TABLE_END},
{0, L0, 1200 * 1000},
{0, L1, 1000 * 1000},
{0, L2, 800 * 1000},
{0, L3, 500 * 1000},
{0, L4, 200 * 1000},
{0, 0, CPUFREQ_TABLE_END},
};
static struct apll_freq apll_freq_4210[] = {

30
drivers/cpufreq/exynos4x12-cpufreq.c
View File

@ -30,21 +30,21 @@ static unsigned int exynos4x12_volt_table[] = {
};
static struct cpufreq_frequency_table exynos4x12_freq_table[] = {
{CPUFREQ_BOOST_FREQ, 1500 * 1000},
{L1, 1400 * 1000},
{L2, 1300 * 1000},
{L3, 1200 * 1000},
{L4, 1100 * 1000},
{L5, 1000 * 1000},
{L6, 900 * 1000},
{L7, 800 * 1000},
{L8, 700 * 1000},
{L9, 600 * 1000},
{L10, 500 * 1000},
{L11, 400 * 1000},
{L12, 300 * 1000},
{L13, 200 * 1000},
{0, CPUFREQ_TABLE_END},
{CPUFREQ_BOOST_FREQ, L0, 1500 * 1000},
{0, L1, 1400 * 1000},
{0, L2, 1300 * 1000},
{0, L3, 1200 * 1000},
{0, L4, 1100 * 1000},
{0, L5, 1000 * 1000},
{0, L6, 900 * 1000},
{0, L7, 800 * 1000},
{0, L8, 700 * 1000},
{0, L9, 600 * 1000},
{0, L10, 500 * 1000},
{0, L11, 400 * 1000},
{0, L12, 300 * 1000},
{0, L13, 200 * 1000},
{0, 0, CPUFREQ_TABLE_END},
};
static struct apll_freq *apll_freq_4x12;

34
drivers/cpufreq/exynos5250-cpufreq.c
View File

@ -34,23 +34,23 @@ static unsigned int exynos5250_volt_table[] = {
};
static struct cpufreq_frequency_table exynos5250_freq_table[] = {
{L0, 1700 * 1000},
{L1, 1600 * 1000},
{L2, 1500 * 1000},
{L3, 1400 * 1000},
{L4, 1300 * 1000},
{L5, 1200 * 1000},
{L6, 1100 * 1000},
{L7, 1000 * 1000},
{L8, 900 * 1000},
{L9, 800 * 1000},
{L10, 700 * 1000},
{L11, 600 * 1000},
{L12, 500 * 1000},
{L13, 400 * 1000},
{L14, 300 * 1000},
{L15, 200 * 1000},
{0, CPUFREQ_TABLE_END},
{0, L0, 1700 * 1000},
{0, L1, 1600 * 1000},
{0, L2, 1500 * 1000},
{0, L3, 1400 * 1000},
{0, L4, 1300 * 1000},
{0, L5, 1200 * 1000},
{0, L6, 1100 * 1000},
{0, L7, 1000 * 1000},
{0, L8, 900 * 1000},
{0, L9, 800 * 1000},
{0, L10, 700 * 1000},
{0, L11, 600 * 1000},
{0, L12, 500 * 1000},
{0, L13, 400 * 1000},
{0, L14, 300 * 1000},
{0, L15, 200 * 1000},
{0, 0, CPUFREQ_TABLE_END},
};
static struct apll_freq apll_freq_5250[] = {

11
drivers/cpufreq/freq_table.c
View File

@ -33,11 +33,10 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
continue;
}
if (!cpufreq_boost_enabled()
&& table[i].driver_data == CPUFREQ_BOOST_FREQ)
&& (table[i].flags & CPUFREQ_BOOST_FREQ))
continue;
pr_debug("table entry %u: %u kHz, %u driver_data\n",
i, freq, table[i].driver_data);
pr_debug("table entry %u: %u kHz\n", i, freq);
if (freq < min_freq)
min_freq = freq;
if (freq > max_freq)
@ -175,8 +174,8 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
} else
*index = optimal.driver_data;
pr_debug("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
table[*index].driver_data);
pr_debug("target index is %u, freq is:%u kHz\n", *index,
table[*index].frequency);
return 0;
}
@ -230,7 +229,7 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf,
* show_boost = false and driver_data != BOOST freq
* display NON BOOST freqs
*/
if (show_boost ^ (table[i].driver_data == CPUFREQ_BOOST_FREQ))
if (show_boost ^ (table[i].flags & CPUFREQ_BOOST_FREQ))
continue;
count += sprintf(&buf[count], "%d ", table[i].frequency);

3
drivers/cpufreq/ia64-acpi-cpufreq.c
View File

@ -254,7 +254,7 @@ acpi_cpufreq_cpu_init (
}
/* alloc freq_table */
data->freq_table = kmalloc(sizeof(*data->freq_table) *
data->freq_table = kzalloc(sizeof(*data->freq_table) *
(data->acpi_data.state_count + 1),
GFP_KERNEL);
if (!data->freq_table) {
@ -275,7 +275,6 @@ acpi_cpufreq_cpu_init (
/* table init */
for (i = 0; i <= data->acpi_data.state_count; i++)
{
data->freq_table[i].driver_data = i;
if (i < data->acpi_data.state_count) {
data->freq_table[i].frequency =
data->acpi_data.states[i].core_frequency * 1000;

6
drivers/cpufreq/kirkwood-cpufreq.c
View File

@ -43,9 +43,9 @@ static struct priv
* table.
*/
static struct cpufreq_frequency_table kirkwood_freq_table[] = {
{STATE_CPU_FREQ, 0}, /* CPU uses cpuclk */
{STATE_DDR_FREQ, 0}, /* CPU uses ddrclk */
{0, CPUFREQ_TABLE_END},
{0, STATE_CPU_FREQ, 0}, /* CPU uses cpuclk */
{0, STATE_DDR_FREQ, 0}, /* CPU uses ddrclk */
{0, 0, CPUFREQ_TABLE_END},
};
static unsigned int kirkwood_cpufreq_get_cpu_frequency(unsigned int cpu)

2
drivers/cpufreq/longhaul.c
View File

@ -475,7 +475,7 @@ static int longhaul_get_ranges(void)
return -EINVAL;
}
longhaul_table = kmalloc((numscales + 1) * sizeof(*longhaul_table),
longhaul_table = kzalloc((numscales + 1) * sizeof(*longhaul_table),
GFP_KERNEL);
if (!longhaul_table)
return -ENOMEM;

2
drivers/cpufreq/loongson2_cpufreq.c
View File

@ -69,7 +69,7 @@ static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
static struct clk *cpuclk;
struct clk *cpuclk;
int i;
unsigned long rate;
int ret;

6
drivers/cpufreq/maple-cpufreq.c
View File

@ -59,9 +59,9 @@
#define CPUFREQ_LOW 1
static struct cpufreq_frequency_table maple_cpu_freqs[] = {
{CPUFREQ_HIGH, 0},
{CPUFREQ_LOW, 0},
{0, CPUFREQ_TABLE_END},
{0, CPUFREQ_HIGH, 0},
{0, CPUFREQ_LOW, 0},
{0, 0, CPUFREQ_TABLE_END},
};
/* Power mode data is an array of the 32 bits PCR values to use for

20
drivers/cpufreq/p4-clockmod.c
View File

@ -92,16 +92,16 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
static struct cpufreq_frequency_table p4clockmod_table[] = {
{DC_RESV, CPUFREQ_ENTRY_INVALID},
{DC_DFLT, 0},
{DC_25PT, 0},
{DC_38PT, 0},
{DC_50PT, 0},
{DC_64PT, 0},
{DC_75PT, 0},
{DC_88PT, 0},
{DC_DISABLE, 0},
{DC_RESV, CPUFREQ_TABLE_END},
{0, DC_RESV, CPUFREQ_ENTRY_INVALID},
{0, DC_DFLT, 0},
{0, DC_25PT, 0},
{0, DC_38PT, 0},
{0, DC_50PT, 0},
{0, DC_64PT, 0},
{0, DC_75PT, 0},
{0, DC_88PT, 0},
{0, DC_DISABLE, 0},
{0, DC_RESV, CPUFREQ_TABLE_END},
};

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

@ -60,12 +60,12 @@ static int current_astate;
/* We support 5(A0-A4) power states excluding turbo(A5-A6) modes */
static struct cpufreq_frequency_table pas_freqs[] = {
{0, 0},
{1, 0},
{2, 0},
{3, 0},
{4, 0},
{0, CPUFREQ_TABLE_END},
{0, 0, 0},
{0, 1, 0},
{0, 2, 0},
{0, 3, 0},
{0, 4, 0},
{0, 0, CPUFREQ_TABLE_END},
};
/*

6
drivers/cpufreq/pmac32-cpufreq.c
View File

@ -81,9 +81,9 @@ static int is_pmu_based;
#define CPUFREQ_LOW 1
static struct cpufreq_frequency_table pmac_cpu_freqs[] = {
{CPUFREQ_HIGH, 0},
{CPUFREQ_LOW, 0},
{0, CPUFREQ_TABLE_END},
{0, CPUFREQ_HIGH, 0},
{0, CPUFREQ_LOW, 0},
{0, 0, CPUFREQ_TABLE_END},
};
static inline void local_delay(unsigned long ms)

6
drivers/cpufreq/pmac64-cpufreq.c
View File

@ -65,9 +65,9 @@
#define CPUFREQ_LOW 1
static struct cpufreq_frequency_table g5_cpu_freqs[] = {
{CPUFREQ_HIGH, 0},
{CPUFREQ_LOW, 0},
{0, CPUFREQ_TABLE_END},
{0, CPUFREQ_HIGH, 0},
{0, CPUFREQ_LOW, 0},
{0, 0, CPUFREQ_TABLE_END},
};
/* Power mode data is an array of the 32 bits PCR values to use for

18
drivers/cpufreq/powernow-k6.c
View File

@ -37,15 +37,15 @@ MODULE_PARM_DESC(bus_frequency, "Bus frequency in kHz");
/* Clock ratio multiplied by 10 - see table 27 in AMD#23446 */
static struct cpufreq_frequency_table clock_ratio[] = {
{60, /* 110 -> 6.0x */ 0},
{55, /* 011 -> 5.5x */ 0},
{50, /* 001 -> 5.0x */ 0},
{45, /* 000 -> 4.5x */ 0},
{40, /* 010 -> 4.0x */ 0},
{35, /* 111 -> 3.5x */ 0},
{30, /* 101 -> 3.0x */ 0},
{20, /* 100 -> 2.0x */ 0},
{0, CPUFREQ_TABLE_END}
{0, 60, /* 110 -> 6.0x */ 0},
{0, 55, /* 011 -> 5.5x */ 0},
{0, 50, /* 001 -> 5.0x */ 0},
{0, 45, /* 000 -> 4.5x */ 0},
{0, 40, /* 010 -> 4.0x */ 0},
{0, 35, /* 111 -> 3.5x */ 0},
{0, 30, /* 101 -> 3.0x */ 0},
{0, 20, /* 100 -> 2.0x */ 0},
{0, 0, CPUFREQ_TABLE_END}
};
static const u8 index_to_register[8] = { 6, 3, 1, 0, 2, 7, 5, 4 };

5
drivers/cpufreq/powernow-k8.c
View File

@ -623,7 +623,7 @@ static int fill_powernow_table(struct powernow_k8_data *data,
if (check_pst_table(data, pst, maxvid))
return -EINVAL;
powernow_table = kmalloc((sizeof(*powernow_table)
powernow_table = kzalloc((sizeof(*powernow_table)
* (data->numps + 1)), GFP_KERNEL);
if (!powernow_table) {
printk(KERN_ERR PFX "powernow_table memory alloc failure\n");
@ -793,7 +793,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
}
/* fill in data->powernow_table */
powernow_table = kmalloc((sizeof(*powernow_table)
powernow_table = kzalloc((sizeof(*powernow_table)
* (data->acpi_data.state_count + 1)), GFP_KERNEL);
if (!powernow_table) {
pr_debug("powernow_table memory alloc failure\n");
@ -810,7 +810,6 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
powernow_table[data->acpi_data.state_count].frequency =
CPUFREQ_TABLE_END;
powernow_table[data->acpi_data.state_count].driver_data = 0;
data->powernow_table = powernow_table;
if (cpumask_first(cpu_core_mask(data->cpu)) == data->cpu)

341
drivers/cpufreq/powernv-cpufreq.c Normal file
View File

@ -0,0 +1,341 @@
/*
* POWERNV cpufreq driver for the IBM POWER processors
*
* (C) Copyright IBM 2014
*
* Author: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#define pr_fmt(fmt) "powernv-cpufreq: " fmt
#include <linux/kernel.h>
#include <linux/sysfs.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/cpufreq.h>
#include <linux/smp.h>
#include <linux/of.h>
#include <asm/cputhreads.h>
#include <asm/reg.h>
#define POWERNV_MAX_PSTATES 256
static struct cpufreq_frequency_table powernv_freqs[POWERNV_MAX_PSTATES+1];
/*
* Note: The set of pstates consists of contiguous integers, the
* smallest of which is indicated by powernv_pstate_info.min, the
* largest of which is indicated by powernv_pstate_info.max.
*
* The nominal pstate is the highest non-turbo pstate in this
* platform. This is indicated by powernv_pstate_info.nominal.
*/
static struct powernv_pstate_info {
int min;
int max;
int nominal;
int nr_pstates;
} powernv_pstate_info;
/*
* Initialize the freq table based on data obtained
* from the firmware passed via device-tree
*/
static int init_powernv_pstates(void)
{
struct device_node *power_mgt;
int i, pstate_min, pstate_max, pstate_nominal, nr_pstates = 0;
const __be32 *pstate_ids, *pstate_freqs;
u32 len_ids, len_freqs;
power_mgt = of_find_node_by_path("/ibm,opal/power-mgt");
if (!power_mgt) {
pr_warn("power-mgt node not found\n");
return -ENODEV;
}
if (of_property_read_u32(power_mgt, "ibm,pstate-min", &pstate_min)) {
pr_warn("ibm,pstate-min node not found\n");
return -ENODEV;
}
if (of_property_read_u32(power_mgt, "ibm,pstate-max", &pstate_max)) {
pr_warn("ibm,pstate-max node not found\n");
return -ENODEV;
}
if (of_property_read_u32(power_mgt, "ibm,pstate-nominal",
&pstate_nominal)) {
pr_warn("ibm,pstate-nominal not found\n");
return -ENODEV;
}
pr_info("cpufreq pstate min %d nominal %d max %d\n", pstate_min,
pstate_nominal, pstate_max);
pstate_ids = of_get_property(power_mgt, "ibm,pstate-ids", &len_ids);
if (!pstate_ids) {
pr_warn("ibm,pstate-ids not found\n");
return -ENODEV;
}
pstate_freqs = of_get_property(power_mgt, "ibm,pstate-frequencies-mhz",
&len_freqs);
if (!pstate_freqs) {
pr_warn("ibm,pstate-frequencies-mhz not found\n");
return -ENODEV;
}
WARN_ON(len_ids != len_freqs);
nr_pstates = min(len_ids, len_freqs) / sizeof(u32);
if (!nr_pstates) {
pr_warn("No PStates found\n");
return -ENODEV;
}
pr_debug("NR PStates %d\n", nr_pstates);
for (i = 0; i < nr_pstates; i++) {
u32 id = be32_to_cpu(pstate_ids[i]);
u32 freq = be32_to_cpu(pstate_freqs[i]);
pr_debug("PState id %d freq %d MHz\n", id, freq);
powernv_freqs[i].frequency = freq * 1000; /* kHz */
powernv_freqs[i].driver_data = id;
}
/* End of list marker entry */
powernv_freqs[i].frequency = CPUFREQ_TABLE_END;
powernv_pstate_info.min = pstate_min;
powernv_pstate_info.max = pstate_max;
powernv_pstate_info.nominal = pstate_nominal;
powernv_pstate_info.nr_pstates = nr_pstates;
return 0;
}
/* Returns the CPU frequency corresponding to the pstate_id. */
static unsigned int pstate_id_to_freq(int pstate_id)
{
int i;
i = powernv_pstate_info.max - pstate_id;
BUG_ON(i >= powernv_pstate_info.nr_pstates || i < 0);
return powernv_freqs[i].frequency;
}
/*
* cpuinfo_nominal_freq_show - Show the nominal CPU frequency as indicated by
* the firmware
*/
static ssize_t cpuinfo_nominal_freq_show(struct cpufreq_policy *policy,
char *buf)
{
return sprintf(buf, "%u\n",
pstate_id_to_freq(powernv_pstate_info.nominal));
}
struct freq_attr cpufreq_freq_attr_cpuinfo_nominal_freq =
__ATTR_RO(cpuinfo_nominal_freq);
static struct freq_attr *powernv_cpu_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
&cpufreq_freq_attr_cpuinfo_nominal_freq,
NULL,
};
/* Helper routines */
/* Access helpers to power mgt SPR */
static inline unsigned long get_pmspr(unsigned long sprn)
{
switch (sprn) {
case SPRN_PMCR:
return mfspr(SPRN_PMCR);
case SPRN_PMICR:
return mfspr(SPRN_PMICR);
case SPRN_PMSR:
return mfspr(SPRN_PMSR);
}
BUG();
}
static inline void set_pmspr(unsigned long sprn, unsigned long val)
{
switch (sprn) {
case SPRN_PMCR:
mtspr(SPRN_PMCR, val);
return;
case SPRN_PMICR:
mtspr(SPRN_PMICR, val);
return;
}
BUG();
}
/*
* Use objects of this type to query/update
* pstates on a remote CPU via smp_call_function.
*/
struct powernv_smp_call_data {
unsigned int freq;
int pstate_id;
};
/*
* powernv_read_cpu_freq: Reads the current frequency on this CPU.
*
* Called via smp_call_function.
*
* Note: The caller of the smp_call_function should pass an argument of
* the type 'struct powernv_smp_call_data *' along with this function.
*
* The current frequency on this CPU will be returned via
* ((struct powernv_smp_call_data *)arg)->freq;
*/
static void powernv_read_cpu_freq(void *arg)
{
unsigned long pmspr_val;
s8 local_pstate_id;
struct powernv_smp_call_data *freq_data = arg;
pmspr_val = get_pmspr(SPRN_PMSR);
/*
* The local pstate id corresponds bits 48..55 in the PMSR.
* Note: Watch out for the sign!
*/
local_pstate_id = (pmspr_val >> 48) & 0xFF;
freq_data->pstate_id = local_pstate_id;
freq_data->freq = pstate_id_to_freq(freq_data->pstate_id);
pr_debug("cpu %d pmsr %016lX pstate_id %d frequency %d kHz\n",
raw_smp_processor_id(), pmspr_val, freq_data->pstate_id,
freq_data->freq);
}
/*
* powernv_cpufreq_get: Returns the CPU frequency as reported by the
* firmware for CPU 'cpu'. This value is reported through the sysfs
* file cpuinfo_cur_freq.
*/
unsigned int powernv_cpufreq_get(unsigned int cpu)
{
struct powernv_smp_call_data freq_data;
smp_call_function_any(cpu_sibling_mask(cpu), powernv_read_cpu_freq,
&freq_data, 1);
return freq_data.freq;
}
/*
* set_pstate: Sets the pstate on this CPU.
*
* This is called via an smp_call_function.
*
* The caller must ensure that freq_data is of the type
* (struct powernv_smp_call_data *) and the pstate_id which needs to be set
* on this CPU should be present in freq_data->pstate_id.
*/
static void set_pstate(void *freq_data)
{
unsigned long val;
unsigned long pstate_ul =
((struct powernv_smp_call_data *) freq_data)->pstate_id;
val = get_pmspr(SPRN_PMCR);
val = val & 0x0000FFFFFFFFFFFFULL;
pstate_ul = pstate_ul & 0xFF;
/* Set both global(bits 56..63) and local(bits 48..55) PStates */
val = val | (pstate_ul << 56) | (pstate_ul << 48);
pr_debug("Setting cpu %d pmcr to %016lX\n",
raw_smp_processor_id(), val);
set_pmspr(SPRN_PMCR, val);
}
/*
* powernv_cpufreq_target_index: Sets the frequency corresponding to
* the cpufreq table entry indexed by new_index on the cpus in the
* mask policy->cpus
*/
static int powernv_cpufreq_target_index(struct cpufreq_policy *policy,
unsigned int new_index)
{
struct powernv_smp_call_data freq_data;
freq_data.pstate_id = powernv_freqs[new_index].driver_data;
/*
* Use smp_call_function to send IPI and execute the
* mtspr on target CPU. We could do that without IPI
* if current CPU is within policy->cpus (core)
*/
smp_call_function_any(policy->cpus, set_pstate, &freq_data, 1);
return 0;
}
static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
int base, i;
base = cpu_first_thread_sibling(policy->cpu);
for (i = 0; i < threads_per_core; i++)
cpumask_set_cpu(base + i, policy->cpus);
return cpufreq_table_validate_and_show(policy, powernv_freqs);
}
static struct cpufreq_driver powernv_cpufreq_driver = {
.name = "powernv-cpufreq",
.flags = CPUFREQ_CONST_LOOPS,
.init = powernv_cpufreq_cpu_init,
.verify = cpufreq_generic_frequency_table_verify,
.target_index = powernv_cpufreq_target_index,
.get = powernv_cpufreq_get,
.attr = powernv_cpu_freq_attr,
};
static int __init powernv_cpufreq_init(void)
{
int rc = 0;
/* Discover pstates from device tree and init */
rc = init_powernv_pstates();
if (rc) {
pr_info("powernv-cpufreq disabled. System does not support PState control\n");
return rc;
}
return cpufreq_register_driver(&powernv_cpufreq_driver);
}
module_init(powernv_cpufreq_init);
static void __exit powernv_cpufreq_exit(void)
{
cpufreq_unregister_driver(&powernv_cpufreq_driver);
}
module_exit(powernv_cpufreq_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>");

1
drivers/cpufreq/ppc-corenet-cpufreq.c
View File

@ -13,7 +13,6 @@
#include <linux/clk.h>
#include <linux/cpufreq.h>
#include <linux/errno.h>
#include <sysdev/fsl_soc.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>

18
drivers/cpufreq/ppc_cbe_cpufreq.c
View File

@ -32,15 +32,15 @@
/* the CBE supports an 8 step frequency scaling */
static struct cpufreq_frequency_table cbe_freqs[] = {
{1, 0},
{2, 0},
{3, 0},
{4, 0},
{5, 0},
{6, 0},
{8, 0},
{10, 0},
{0, CPUFREQ_TABLE_END},
{0, 1, 0},
{0, 2, 0},
{0, 3, 0},
{0, 4, 0},
{0, 5, 0},
{0, 6, 0},
{0, 8, 0},
{0, 10, 0},
{0, 0, CPUFREQ_TABLE_END},
};
/*

20
drivers/cpufreq/s3c2416-cpufreq.c
View File

@ -72,19 +72,19 @@ static struct s3c2416_dvfs s3c2416_dvfs_table[] = {
#endif
static struct cpufreq_frequency_table s3c2416_freq_table[] = {
{ SOURCE_HCLK, FREQ_DVS },
{ SOURCE_ARMDIV, 133333 },
{ SOURCE_ARMDIV, 266666 },
{ SOURCE_ARMDIV, 400000 },
{ 0, CPUFREQ_TABLE_END },
{ 0, SOURCE_HCLK, FREQ_DVS },
{ 0, SOURCE_ARMDIV, 133333 },
{ 0, SOURCE_ARMDIV, 266666 },
{ 0, SOURCE_ARMDIV, 400000 },
{ 0, 0, CPUFREQ_TABLE_END },
};
static struct cpufreq_frequency_table s3c2450_freq_table[] = {
{ SOURCE_HCLK, FREQ_DVS },
{ SOURCE_ARMDIV, 133500 },
{ SOURCE_ARMDIV, 267000 },
{ SOURCE_ARMDIV, 534000 },
{ 0, CPUFREQ_TABLE_END },
{ 0, SOURCE_HCLK, FREQ_DVS },
{ 0, SOURCE_ARMDIV, 133500 },
{ 0, SOURCE_ARMDIV, 267000 },
{ 0, SOURCE_ARMDIV, 534000 },
{ 0, 0, CPUFREQ_TABLE_END },
};
static unsigned int s3c2416_cpufreq_get_speed(unsigned int cpu)

4
drivers/cpufreq/s3c24xx-cpufreq.c
View File

@ -586,7 +586,7 @@ static int s3c_cpufreq_build_freq(void)
size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
size++;
ftab = kmalloc(sizeof(*ftab) * size, GFP_KERNEL);
ftab = kzalloc(sizeof(*ftab) * size, GFP_KERNEL);
if (!ftab) {
printk(KERN_ERR "%s: no memory for tables\n", __func__);
return -ENOMEM;
@ -664,7 +664,7 @@ int __init s3c_plltab_register(struct cpufreq_frequency_table *plls,
size = sizeof(*vals) * (plls_no + 1);
vals = kmalloc(size, GFP_KERNEL);
vals = kzalloc(size, GFP_KERNEL);
if (vals) {
memcpy(vals, plls, size);
pll_reg = vals;

26
drivers/cpufreq/s3c64xx-cpufreq.c
View File

@ -37,19 +37,19 @@ static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = {
};
static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
{ 0, 66000 },
{ 0, 100000 },
{ 0, 133000 },
{ 1, 200000 },
{ 1, 222000 },
{ 1, 266000 },
{ 2, 333000 },
{ 2, 400000 },
{ 2, 532000 },
{ 2, 533000 },
{ 3, 667000 },
{ 4, 800000 },
{ 0, CPUFREQ_TABLE_END },
{ 0, 0, 66000 },
{ 0, 0, 100000 },
{ 0, 0, 133000 },
{ 0, 1, 200000 },
{ 0, 1, 222000 },
{ 0, 1, 266000 },
{ 0, 2, 333000 },
{ 0, 2, 400000 },
{ 0, 2, 532000 },
{ 0, 2, 533000 },
{ 0, 3, 667000 },
{ 0, 4, 800000 },
{ 0, 0, CPUFREQ_TABLE_END },
};
#endif

12
drivers/cpufreq/s5pv210-cpufreq.c
View File

@ -64,12 +64,12 @@ enum s5pv210_dmc_port {
};
static struct cpufreq_frequency_table s5pv210_freq_table[] = {
{L0, 1000*1000},
{L1, 800*1000},
{L2, 400*1000},
{L3, 200*1000},
{L4, 100*1000},
{0, CPUFREQ_TABLE_END},
{0, L0, 1000*1000},
{0, L1, 800*1000},
{0, L2, 400*1000},
{0, L3, 200*1000},
{0, L4, 100*1000},
{0, 0, CPUFREQ_TABLE_END},
};
static struct regulator *arm_regulator;

6
drivers/cpufreq/sc520_freq.c
View File

@ -33,9 +33,9 @@ static __u8 __iomem *cpuctl;
#define PFX "sc520_freq: "
static struct cpufreq_frequency_table sc520_freq_table[] = {
{0x01, 100000},
{0x02, 133000},
{0, CPUFREQ_TABLE_END},
{0, 0x01, 100000},
{0, 0x02, 133000},
{0, 0, CPUFREQ_TABLE_END},
};
static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu)

7
drivers/cpufreq/spear-cpufreq.c
View File

@ -195,18 +195,15 @@ static int spear_cpufreq_probe(struct platform_device *pdev)
cnt = prop->length / sizeof(u32);
val = prop->value;
freq_tbl = kmalloc(sizeof(*freq_tbl) * (cnt + 1), GFP_KERNEL);
freq_tbl = kzalloc(sizeof(*freq_tbl) * (cnt + 1), GFP_KERNEL);
if (!freq_tbl) {
ret = -ENOMEM;
goto out_put_node;
}
for (i = 0; i < cnt; i++) {
freq_tbl[i].driver_data = i;
for (i = 0; i < cnt; i++)
freq_tbl[i].frequency = be32_to_cpup(val++);
}
freq_tbl[i].driver_data = i;
freq_tbl[i].frequency = CPUFREQ_TABLE_END;
spear_cpufreq.freq_tbl = freq_tbl;

6
drivers/cpufreq/speedstep-ich.c
View File

@ -49,9 +49,9 @@ static u32 pmbase;
* are in kHz for the time being.
*/
static struct cpufreq_frequency_table speedstep_freqs[] = {
{SPEEDSTEP_HIGH, 0},
{SPEEDSTEP_LOW, 0},
{0, CPUFREQ_TABLE_END},
{0, SPEEDSTEP_HIGH, 0},
{0, SPEEDSTEP_LOW, 0},
{0, 0, CPUFREQ_TABLE_END},
};

6
drivers/cpufreq/speedstep-smi.c
View File

@ -42,9 +42,9 @@ static enum speedstep_processor speedstep_processor;
* are in kHz for the time being.
*/
static struct cpufreq_frequency_table speedstep_freqs[] = {
{SPEEDSTEP_HIGH, 0},
{SPEEDSTEP_LOW, 0},
{0, CPUFREQ_TABLE_END},
{0, SPEEDSTEP_HIGH, 0},
{0, SPEEDSTEP_LOW, 0},
{0, 0, CPUFREQ_TABLE_END},
};
#define GET_SPEEDSTEP_OWNER 0

2
drivers/cpufreq/unicore2-cpufreq.c
View File

@ -45,7 +45,7 @@ static int ucv2_target(struct cpufreq_policy *policy,
freqs.new = target_freq;
cpufreq_freq_transition_begin(policy, &freqs);
ret = clk_set_rate(policy->mclk, target_freq * 1000);
ret = clk_set_rate(policy->clk, target_freq * 1000);
cpufreq_freq_transition_end(policy, &freqs, ret);
return ret;

9
include/linux/cpufreq.h
View File

@ -455,11 +455,14 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
* FREQUENCY TABLE HELPERS *
*********************************************************************/
#define CPUFREQ_ENTRY_INVALID ~0
#define CPUFREQ_TABLE_END ~1
#define CPUFREQ_BOOST_FREQ ~2
/* Special Values of .frequency field */
#define CPUFREQ_ENTRY_INVALID ~0
#define CPUFREQ_TABLE_END ~1
/* Special Values of .flags field */
#define CPUFREQ_BOOST_FREQ (1 << 0)
struct cpufreq_frequency_table {
unsigned int flags;
unsigned int driver_data; /* driver specific data, not used by core */
unsigned int frequency; /* kHz - doesn't need to be in ascending
* order */