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Merge branch 'pm-cpufreq'

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* pm-cpufreq: (41 commits)
  cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: e_powersaver: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: ACPI: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: s3c2416: fix forgotten driver_data conversions
  cpufreq: make __cpufreq_notify_transition() static
  cpufreq: Fix minor formatting issues
  cpufreq: Fix governor start/stop race condition
  cpufreq: Simplify userspace governor
  cpufreq: X86_AMD_FREQ_SENSITIVITY: select CPU_FREQ_TABLE
  cpufreq: tegra: create CONFIG_ARM_TEGRA_CPUFREQ
  cpufreq: S3C2416/S3C64XX: select CPU_FREQ_TABLE
  ...
This commit is contained in:
Rafael J. Wysocki 2013-06-28 13:01:34 +02:00
parent 52388492ea e11158c0c9
commit 405a1086bd
67 changed files with 929 additions and 543 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
Documentation/cpu-freq/cpu-drivers.txt
View file

@ -186,7 +186,7 @@ As most cpufreq processors only allow for being set to a few specific
frequencies, a "frequency table" with some functions might assist in
some work of the processor driver. Such a "frequency table" consists
of an array of struct cpufreq_frequency_table entries, with any value in
"index" you want to use, and the corresponding frequency in
"driver_data" you want to use, and the corresponding frequency in
"frequency". At the end of the table, you need to add a
cpufreq_frequency_table entry with frequency set to CPUFREQ_TABLE_END. And
if you want to skip one entry in the table, set the frequency to
@ -214,10 +214,4 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
is the corresponding frequency table helper for the ->target
stage. Just pass the values to this function, and the unsigned int
index returns the number of the frequency table entry which contains
the frequency the CPU shall be set to. PLEASE NOTE: This is not the
"index" which is in this cpufreq_table_entry.index, but instead
cpufreq_table[index]. So, the new frequency is
cpufreq_table[index].frequency, and the value you stored into the
frequency table "index" field is
cpufreq_table[index].index.
the frequency the CPU shall be set to.

3
MAINTAINERS
View file

@ -2218,7 +2218,8 @@ M: Viresh Kumar <viresh.kumar@linaro.org>
L: cpufreq@vger.kernel.org
L: linux-pm@vger.kernel.org
S: Maintained
T: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
T: git git://git.linaro.org/people/vireshk/linux.git (For ARM Updates)
F: drivers/cpufreq/
F: include/linux/cpufreq.h

1
arch/arm/mach-davinci/Kconfig
View file

@ -40,6 +40,7 @@ config ARCH_DAVINCI_DA850
bool "DA850/OMAP-L138/AM18x based system"
select ARCH_DAVINCI_DA8XX
select ARCH_HAS_CPUFREQ
select CPU_FREQ_TABLE
select CP_INTC
config ARCH_DAVINCI_DA8XX

8
arch/arm/mach-davinci/da850.c
View file

@ -1004,7 +1004,7 @@ static const struct da850_opp da850_opp_96 = {
#define OPP(freq) \
{ \
.index = (unsigned int) &da850_opp_##freq, \
.driver_data = (unsigned int) &da850_opp_##freq, \
.frequency = freq * 1000, \
}
@ -1016,7 +1016,7 @@ static struct cpufreq_frequency_table da850_freq_table[] = {
OPP(200),
OPP(96),
{
.index = 0,
.driver_data = 0,
.frequency = CPUFREQ_TABLE_END,
},
};
@ -1044,7 +1044,7 @@ static int da850_set_voltage(unsigned int index)
if (!cvdd)
return -ENODEV;
opp = (struct da850_opp *) cpufreq_info.freq_table[index].index;
opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data;
return regulator_set_voltage(cvdd, opp->cvdd_min, opp->cvdd_max);
}
@ -1125,7 +1125,7 @@ static int da850_set_pll0rate(struct clk *clk, unsigned long index)
struct pll_data *pll = clk->pll_data;
int ret;
opp = (struct da850_opp *) cpufreq_info.freq_table[index].index;
opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data;
prediv = opp->prediv;
mult = opp->mult;
postdiv = opp->postdiv;

3
arch/arm/mach-pxa/Kconfig
View file

@ -615,12 +615,14 @@ endmenu
config PXA25x
bool
select CPU_XSCALE
select CPU_FREQ_TABLE if CPU_FREQ
help
Select code specific to PXA21x/25x/26x variants
config PXA27x
bool
select CPU_XSCALE
select CPU_FREQ_TABLE if CPU_FREQ
help
Select code specific to PXA27x variants
@ -633,6 +635,7 @@ config CPU_PXA26x
config PXA3xx
bool
select CPU_XSC3
select CPU_FREQ_TABLE if CPU_FREQ
help
Select code specific to PXA3xx variants

2
arch/arm/mach-s3c24xx/cpufreq-utils.c
View file

@ -60,5 +60,5 @@ void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
*/
void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg)
{
__raw_writel(cfg->pll.index, S3C2410_MPLLCON);
__raw_writel(cfg->pll.driver_data, S3C2410_MPLLCON);
}

4
arch/arm/mach-s3c24xx/cpufreq.c
View file

@ -70,7 +70,7 @@ static void s3c_cpufreq_getcur(struct s3c_cpufreq_config *cfg)
cfg->freq.pclk = pclk = clk_get_rate(clk_pclk);
cfg->freq.armclk = armclk = clk_get_rate(clk_arm);
cfg->pll.index = __raw_readl(S3C2410_MPLLCON);
cfg->pll.driver_data = __raw_readl(S3C2410_MPLLCON);
cfg->pll.frequency = fclk;
cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10);
@ -431,7 +431,7 @@ static unsigned int suspend_freq;
static int s3c_cpufreq_suspend(struct cpufreq_policy *policy)
{
suspend_pll.frequency = clk_get_rate(_clk_mpll);
suspend_pll.index = __raw_readl(S3C2410_MPLLCON);
suspend_pll.driver_data = __raw_readl(S3C2410_MPLLCON);
suspend_freq = s3c_cpufreq_get(0) * 1000;
return 0;

54
arch/arm/mach-s3c24xx/pll-s3c2410.c
View file

@ -33,36 +33,36 @@
#include <plat/cpu-freq-core.h>
static struct cpufreq_frequency_table pll_vals_12MHz[] = {
{ .frequency = 34000000, .index = PLLVAL(82, 2, 3), },
{ .frequency = 45000000, .index = PLLVAL(82, 1, 3), },
{ .frequency = 51000000, .index = PLLVAL(161, 3, 3), },
{ .frequency = 48000000, .index = PLLVAL(120, 2, 3), },
{ .frequency = 56000000, .index = PLLVAL(142, 2, 3), },
{ .frequency = 68000000, .index = PLLVAL(82, 2, 2), },
{ .frequency = 79000000, .index = PLLVAL(71, 1, 2), },
{ .frequency = 85000000, .index = PLLVAL(105, 2, 2), },
{ .frequency = 90000000, .index = PLLVAL(112, 2, 2), },
{ .frequency = 101000000, .index = PLLVAL(127, 2, 2), },
{ .frequency = 113000000, .index = PLLVAL(105, 1, 2), },
{ .frequency = 118000000, .index = PLLVAL(150, 2, 2), },
{ .frequency = 124000000, .index = PLLVAL(116, 1, 2), },
{ .frequency = 135000000, .index = PLLVAL(82, 2, 1), },
{ .frequency = 147000000, .index = PLLVAL(90, 2, 1), },
{ .frequency = 152000000, .index = PLLVAL(68, 1, 1), },
{ .frequency = 158000000, .index = PLLVAL(71, 1, 1), },
{ .frequency = 170000000, .index = PLLVAL(77, 1, 1), },
{ .frequency = 180000000, .index = PLLVAL(82, 1, 1), },
{ .frequency = 186000000, .index = PLLVAL(85, 1, 1), },
{ .frequency = 192000000, .index = PLLVAL(88, 1, 1), },
{ .frequency = 203000000, .index = PLLVAL(161, 3, 1), },
{ .frequency = 34000000, .driver_data = PLLVAL(82, 2, 3), },
{ .frequency = 45000000, .driver_data = PLLVAL(82, 1, 3), },
{ .frequency = 51000000, .driver_data = PLLVAL(161, 3, 3), },
{ .frequency = 48000000, .driver_data = PLLVAL(120, 2, 3), },
{ .frequency = 56000000, .driver_data = PLLVAL(142, 2, 3), },
{ .frequency = 68000000, .driver_data = PLLVAL(82, 2, 2), },
{ .frequency = 79000000, .driver_data = PLLVAL(71, 1, 2), },
{ .frequency = 85000000, .driver_data = PLLVAL(105, 2, 2), },
{ .frequency = 90000000, .driver_data = PLLVAL(112, 2, 2), },
{ .frequency = 101000000, .driver_data = PLLVAL(127, 2, 2), },
{ .frequency = 113000000, .driver_data = PLLVAL(105, 1, 2), },
{ .frequency = 118000000, .driver_data = PLLVAL(150, 2, 2), },
{ .frequency = 124000000, .driver_data = PLLVAL(116, 1, 2), },
{ .frequency = 135000000, .driver_data = PLLVAL(82, 2, 1), },
{ .frequency = 147000000, .driver_data = PLLVAL(90, 2, 1), },
{ .frequency = 152000000, .driver_data = PLLVAL(68, 1, 1), },
{ .frequency = 158000000, .driver_data = PLLVAL(71, 1, 1), },
{ .frequency = 170000000, .driver_data = PLLVAL(77, 1, 1), },
{ .frequency = 180000000, .driver_data = PLLVAL(82, 1, 1), },
{ .frequency = 186000000, .driver_data = PLLVAL(85, 1, 1), },
{ .frequency = 192000000, .driver_data = PLLVAL(88, 1, 1), },
{ .frequency = 203000000, .driver_data = PLLVAL(161, 3, 1), },
/* 2410A extras */
{ .frequency = 210000000, .index = PLLVAL(132, 2, 1), },
{ .frequency = 226000000, .index = PLLVAL(105, 1, 1), },
{ .frequency = 266000000, .index = PLLVAL(125, 1, 1), },
{ .frequency = 268000000, .index = PLLVAL(126, 1, 1), },
{ .frequency = 270000000, .index = PLLVAL(127, 1, 1), },
{ .frequency = 210000000, .driver_data = PLLVAL(132, 2, 1), },
{ .frequency = 226000000, .driver_data = PLLVAL(105, 1, 1), },
{ .frequency = 266000000, .driver_data = PLLVAL(125, 1, 1), },
{ .frequency = 268000000, .driver_data = PLLVAL(126, 1, 1), },
{ .frequency = 270000000, .driver_data = PLLVAL(127, 1, 1), },
};
static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif)

54
arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
View file

@ -21,33 +21,33 @@
#include <plat/cpu-freq-core.h>
static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
{ .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
{ .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
{ .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
{ .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
{ .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
{ .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
{ .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
{ .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
{ .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
{ .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
{ .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
{ .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
{ .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
{ .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
{ .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
{ .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
{ .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
{ .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
{ .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
{ .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
{ .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
{ .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
{ .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
{ .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
{ .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
{ .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
{ .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
{ .frequency = 75000000, .driver_data = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
{ .frequency = 80000000, .driver_data = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
{ .frequency = 90000000, .driver_data = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
{ .frequency = 100000000, .driver_data = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
{ .frequency = 110000000, .driver_data = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
{ .frequency = 120000000, .driver_data = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
{ .frequency = 150000000, .driver_data = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
{ .frequency = 160000000, .driver_data = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
{ .frequency = 170000000, .driver_data = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
{ .frequency = 180000000, .driver_data = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
{ .frequency = 190000000, .driver_data = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
{ .frequency = 200000000, .driver_data = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
{ .frequency = 210000000, .driver_data = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
{ .frequency = 220000000, .driver_data = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
{ .frequency = 230000000, .driver_data = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
{ .frequency = 240000000, .driver_data = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
{ .frequency = 300000000, .driver_data = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
{ .frequency = 310000000, .driver_data = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
{ .frequency = 320000000, .driver_data = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
{ .frequency = 330000000, .driver_data = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
{ .frequency = 340000000, .driver_data = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
{ .frequency = 350000000, .driver_data = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
{ .frequency = 360000000, .driver_data = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
{ .frequency = 370000000, .driver_data = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
{ .frequency = 380000000, .driver_data = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
{ .frequency = 390000000, .driver_data = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
{ .frequency = 400000000, .driver_data = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
};
static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)

110
arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c
View file

@ -21,61 +21,61 @@
#include <plat/cpu-freq-core.h>
static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
{ .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */
{ .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */
{ .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */
{ .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */
{ .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */
{ .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */
{ .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */
{ .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */
{ .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */
{ .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */
{ .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */
{ .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */
{ .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */
{ .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */
{ .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */
{ .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */
{ .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */
{ .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */
{ .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */
{ .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */
{ .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */
{ .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */
{ .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */
{ .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */
{ .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */
{ .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */
{ .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */
{ .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */
{ .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */
{ .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */
{ .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */
{ .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */
{ .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */
{ .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */
{ .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */
{ .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */
{ .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */
{ .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */
{ .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */
{ .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */
{ .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */
{ .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */
{ .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */
{ .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */
{ .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */
{ .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */
{ .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */
{ .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */
{ .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */
{ .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */
{ .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */
{ .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */
{ .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */
{ .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */
{ .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */
{ .frequency = 78019200, .driver_data = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */
{ .frequency = 84067200, .driver_data = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */
{ .frequency = 90115200, .driver_data = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */
{ .frequency = 96163200, .driver_data = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */
{ .frequency = 102135600, .driver_data = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */
{ .frequency = 108259200, .driver_data = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */
{ .frequency = 114307200, .driver_data = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */
{ .frequency = 120234240, .driver_data = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */
{ .frequency = 126161280, .driver_data = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */
{ .frequency = 132088320, .driver_data = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */
{ .frequency = 138015360, .driver_data = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */
{ .frequency = 144789120, .driver_data = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */
{ .frequency = 150100363, .driver_data = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */
{ .frequency = 156038400, .driver_data = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */
{ .frequency = 162086400, .driver_data = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */
{ .frequency = 168134400, .driver_data = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */
{ .frequency = 174048000, .driver_data = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */
{ .frequency = 180230400, .driver_data = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */
{ .frequency = 186278400, .driver_data = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */
{ .frequency = 192326400, .driver_data = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */
{ .frequency = 198132480, .driver_data = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */
{ .frequency = 204271200, .driver_data = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */
{ .frequency = 210268800, .driver_data = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */
{ .frequency = 216518400, .driver_data = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */
{ .frequency = 222264000, .driver_data = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */
{ .frequency = 228614400, .driver_data = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */
{ .frequency = 234259200, .driver_data = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */
{ .frequency = 240468480, .driver_data = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */
{ .frequency = 246960000, .driver_data = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */
{ .frequency = 252322560, .driver_data = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */
{ .frequency = 258249600, .driver_data = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */
{ .frequency = 264176640, .driver_data = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */
{ .frequency = 270950400, .driver_data = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */
{ .frequency = 276030720, .driver_data = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */
{ .frequency = 282240000, .driver_data = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */
{ .frequency = 289578240, .driver_data = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */
{ .frequency = 294235200, .driver_data = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */
{ .frequency = 300200727, .driver_data = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */
{ .frequency = 306358690, .driver_data = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */
{ .frequency = 312076800, .driver_data = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */
{ .frequency = 318366720, .driver_data = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */
{ .frequency = 324172800, .driver_data = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */
{ .frequency = 330220800, .driver_data = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */
{ .frequency = 336268800, .driver_data = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */
{ .frequency = 342074880, .driver_data = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */
{ .frequency = 348096000, .driver_data = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */
{ .frequency = 355622400, .driver_data = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */
{ .frequency = 360460800, .driver_data = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */
{ .frequency = 366206400, .driver_data = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */
{ .frequency = 372556800, .driver_data = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */
{ .frequency = 378201600, .driver_data = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */
{ .frequency = 384652800, .driver_data = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */
{ .frequency = 391608000, .driver_data = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */
{ .frequency = 396264960, .driver_data = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */
{ .frequency = 402192000, .driver_data = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */
};
static int s3c2440_plls169344_add(struct device *dev,

6
arch/arm/mach-shmobile/clock-sh7372.c
View file

@ -142,15 +142,15 @@ static void pllc2_table_rebuild(struct clk *clk)
/* Initialise PLLC2 frequency table */
for (i = 0; i < ARRAY_SIZE(pllc2_freq_table) - 2; i++) {
pllc2_freq_table[i].frequency = clk->parent->rate * (i + 20) * 2;
pllc2_freq_table[i].index = i;
pllc2_freq_table[i].driver_data = i;
}
/* This is a special entry - switching PLL off makes it a repeater */
pllc2_freq_table[i].frequency = clk->parent->rate;
pllc2_freq_table[i].index = i;
pllc2_freq_table[i].driver_data = i;
pllc2_freq_table[++i].frequency = CPUFREQ_TABLE_END;
pllc2_freq_table[i].index = i;
pllc2_freq_table[i].driver_data = i;
}
static unsigned long pllc2_recalc(struct clk *clk)

3
arch/arm/mach-tegra/Kconfig
View file

@ -28,7 +28,6 @@ config ARCH_TEGRA_2x_SOC
select ARM_ERRATA_754327 if SMP
select ARM_ERRATA_764369 if SMP
select ARM_GIC
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA20
@ -46,7 +45,6 @@ config ARCH_TEGRA_3x_SOC
select ARM_ERRATA_754322
select ARM_ERRATA_764369 if SMP
select ARM_GIC
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA30
@ -63,7 +61,6 @@ config ARCH_TEGRA_114_SOC
select ARM_ARCH_TIMER
select ARM_GIC
select ARM_L1_CACHE_SHIFT_6
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA114

2
arch/arm/plat-samsung/include/plat/cpu-freq-core.h
View file

@ -285,7 +285,7 @@ static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table,
s3c_freq_dbg("%s: { %d = %u kHz }\n",
__func__, index, freq);
table[index].index = index;
table[index].driver_data = index;
table[index].frequency = freq;
}

2
arch/cris/Kconfig
View file

@ -134,11 +134,13 @@ config SVINTO_SIM
config ETRAXFS
bool "ETRAX-FS-V32"
select CPU_FREQ_TABLE if CPU_FREQ
help
Support CRIS V32.
config CRIS_MACH_ARTPEC3
bool "ARTPEC-3"
select CPU_FREQ_TABLE if CPU_FREQ
help
Support Axis ARTPEC-3.

3
arch/mips/loongson/lemote-2f/clock.c
View file

@ -121,7 +121,8 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
clk->rate = rate;
regval = LOONGSON_CHIPCFG0;
regval = (regval & ~0x7) | (loongson2_clockmod_table[i].index - 1);
regval = (regval & ~0x7) |
(loongson2_clockmod_table[i].driver_data - 1);
LOONGSON_CHIPCFG0 = regval;
return ret;

31
arch/powerpc/platforms/Kconfig
View file

@ -193,37 +193,6 @@ config PPC_IO_WORKAROUNDS
source "drivers/cpufreq/Kconfig"
menu "CPU Frequency drivers"
depends on CPU_FREQ
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
PowerBook.
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.
config PPC_PASEMI_CPUFREQ
bool "Support for PA Semi PWRficient"
depends on PPC_PASEMI
default y
select CPU_FREQ_TABLE
help
This adds the support for frequency switching on PA Semi
PWRficient processors.
endmenu
menu "CPUIdle driver"
source "drivers/cpuidle/Kconfig"

1
arch/powerpc/platforms/pasemi/Makefile
View file

@ -1,3 +1,2 @@
obj-y += setup.o pci.o time.o idle.o powersave.o iommu.o dma_lib.o misc.o
obj-$(CONFIG_PPC_PASEMI_MDIO) += gpio_mdio.o
obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += cpufreq.o

2
arch/powerpc/platforms/powermac/Makefile
View file

@ -9,8 +9,6 @@ obj-y += pic.o setup.o time.o feature.o pci.o \
sleep.o low_i2c.o cache.o pfunc_core.o \
pfunc_base.o udbg_scc.o udbg_adb.o
obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq_32.o
obj-$(CONFIG_CPU_FREQ_PMAC64) += cpufreq_64.o
# CONFIG_NVRAM is an arch. independent tristate symbol, for pmac32 we really
# need this to be a bool. Cheat here and pretend CONFIG_NVRAM=m is really
# CONFIG_NVRAM=y

4
drivers/base/power/opp.c
View file

@ -648,14 +648,14 @@ int opp_init_cpufreq_table(struct device *dev,
list_for_each_entry(opp, &dev_opp->opp_list, node) {
if (opp->available) {
freq_table[i].index = i;
freq_table[i].driver_data = i;
freq_table[i].frequency = opp->rate / 1000;
i++;
}
}
mutex_unlock(&dev_opp_list_lock);
freq_table[i].index = i;
freq_table[i].driver_data = i;
freq_table[i].frequency = CPUFREQ_TABLE_END;
*table = &freq_table[0];

17
drivers/cpufreq/Kconfig.arm
View file

@ -5,6 +5,7 @@
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.
@ -18,6 +19,7 @@ config ARM_DT_BL_CPUFREQ
config ARM_EXYNOS_CPUFREQ
bool "SAMSUNG EXYNOS SoCs"
depends on ARCH_EXYNOS
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver common part for Samsung
@ -46,6 +48,7 @@ config ARM_EXYNOS5250_CPUFREQ
config ARM_EXYNOS5440_CPUFREQ
def_bool SOC_EXYNOS5440
depends on HAVE_CLK && PM_OPP && OF
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Samsung EXYNOS5440
SoC. The nature of exynos5440 clock controller is
@ -55,7 +58,6 @@ config ARM_EXYNOS5440_CPUFREQ
config ARM_HIGHBANK_CPUFREQ
tristate "Calxeda Highbank-based"
depends on ARCH_HIGHBANK
select CPU_FREQ_TABLE
select GENERIC_CPUFREQ_CPU0
select PM_OPP
select REGULATOR
@ -71,6 +73,7 @@ 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.
@ -86,6 +89,7 @@ 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.
@ -99,6 +103,7 @@ config ARM_OMAP2PLUS_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
@ -121,6 +126,7 @@ config ARM_S3C2416_CPUFREQ_VCORESCALE
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.
@ -147,6 +153,15 @@ 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.
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.

37
drivers/cpufreq/Kconfig.powerpc
View file

@ -1,6 +1,7 @@
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.
@ -23,3 +24,39 @@ config CPU_FREQ_MAPLE
help
This adds support for frequency switching on Maple 970FX
Evaluation Board and compatible boards (IBM JS2x blades).
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,
e5500 and e6500 series SoCs which are capable of changing
the CPU's frequency dynamically.
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
PowerBook.
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.
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
PWRficient processors.

1
drivers/cpufreq/Kconfig.x86
View file

@ -132,6 +132,7 @@ 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

8
drivers/cpufreq/Makefile
View file

@ -71,7 +71,7 @@ obj-$(CONFIG_ARM_S5PV210_CPUFREQ) += s5pv210-cpufreq.o
obj-$(CONFIG_ARM_SA1100_CPUFREQ) += sa1100-cpufreq.o
obj-$(CONFIG_ARM_SA1110_CPUFREQ) += sa1110-cpufreq.o
obj-$(CONFIG_ARM_SPEAR_CPUFREQ) += spear-cpufreq.o
obj-$(CONFIG_ARCH_TEGRA) += tegra-cpufreq.o
obj-$(CONFIG_ARM_TEGRA_CPUFREQ) += tegra-cpufreq.o
##################################################################################
# PowerPC platform drivers
@ -79,11 +79,15 @@ obj-$(CONFIG_CPU_FREQ_CBE) += ppc-cbe-cpufreq.o
ppc-cbe-cpufreq-y += ppc_cbe_cpufreq_pervasive.o ppc_cbe_cpufreq.o
obj-$(CONFIG_CPU_FREQ_CBE_PMI) += ppc_cbe_cpufreq_pmi.o
obj-$(CONFIG_CPU_FREQ_MAPLE) += maple-cpufreq.o
obj-$(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-$(CONFIG_PPC_PASEMI_CPUFREQ) += pasemi-cpufreq.o
##################################################################################
# Other platform drivers
obj-$(CONFIG_AVR32_AT32AP_CPUFREQ) += at32ap-cpufreq.o
obj-$(CONFIG_BLACKFIN) += blackfin-cpufreq.o
obj-$(CONFIG_BFIN_CPU_FREQ) += blackfin-cpufreq.o
obj-$(CONFIG_CRIS_MACH_ARTPEC3) += cris-artpec3-cpufreq.o
obj-$(CONFIG_ETRAXFS) += cris-etraxfs-cpufreq.o
obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o

16
drivers/cpufreq/acpi-cpufreq.c
View file

@ -232,7 +232,7 @@ static unsigned extract_msr(u32 msr, struct acpi_cpufreq_data *data)
perf = data->acpi_data;
for (i = 0; data->freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
if (msr == perf->states[data->freq_table[i].index].status)
if (msr == perf->states[data->freq_table[i].driver_data].status)
return data->freq_table[i].frequency;
}
return data->freq_table[0].frequency;
@ -442,7 +442,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
goto out;
}
next_perf_state = data->freq_table[next_state].index;
next_perf_state = data->freq_table[next_state].driver_data;
if (perf->state == next_perf_state) {
if (unlikely(data->resume)) {
pr_debug("Called after resume, resetting to P%d\n",
@ -494,12 +494,14 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
pr_debug("acpi_cpufreq_target failed (%d)\n",
policy->cpu);
result = -EAGAIN;
goto out;
freqs.new = freqs.old;
}
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
perf->state = next_perf_state;
if (!result)
perf->state = next_perf_state;
out:
return result;
@ -811,7 +813,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->freq_table[valid_states-1].frequency / 1000)
continue;
data->freq_table[valid_states].index = i;
data->freq_table[valid_states].driver_data = i;
data->freq_table[valid_states].frequency =
perf->states[i].core_frequency * 1000;
valid_states++;
@ -947,7 +949,7 @@ static void __init acpi_cpufreq_boost_init(void)
/* We create the boost file in any case, though for systems without
* hardware support it will be read-only and hardwired to return 0.
*/
if (sysfs_create_file(cpufreq_global_kobject, &(global_boost.attr)))
if (cpufreq_sysfs_create_file(&(global_boost.attr)))
pr_warn(PFX "could not register global boost sysfs file\n");
else
pr_debug("registered global boost sysfs file\n");
@ -955,7 +957,7 @@ static void __init acpi_cpufreq_boost_init(void)
static void __exit acpi_cpufreq_boost_exit(void)
{
sysfs_remove_file(cpufreq_global_kobject, &(global_boost.attr));
cpufreq_sysfs_remove_file(&(global_boost.attr));
if (msrs) {
unregister_cpu_notifier(&boost_nb);

4
drivers/cpufreq/arm_big_little.c
View file

@ -84,11 +84,9 @@ static int bL_cpufreq_set_target(struct cpufreq_policy *policy,
ret = clk_set_rate(clk[cur_cluster], freqs.new * 1000);
if (ret) {
pr_err("clk_set_rate failed: %d\n", ret);
return ret;
freqs.new = freqs.old;
}
policy->cur = freqs.new;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return ret;

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

@ -20,23 +20,23 @@
/* this is the table of CCLK frequencies, in Hz */
/* .index is the entry in the auxiliary dpm_state_table[] */
/* .driver_data is the entry in the auxiliary dpm_state_table[] */
static struct cpufreq_frequency_table bfin_freq_table[] = {
{
.frequency = CPUFREQ_TABLE_END,
.index = 0,
.driver_data = 0,
},
{
.frequency = CPUFREQ_TABLE_END,
.index = 1,
.driver_data = 1,
},
{
.frequency = CPUFREQ_TABLE_END,
.index = 2,
.driver_data = 2,
},
{
.frequency = CPUFREQ_TABLE_END,
.index = 0,
.driver_data = 0,
},
};

202
drivers/cpufreq/cpufreq.c
View file

@ -3,6 +3,7 @@
*
* Copyright (C) 2001 Russell King
* (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
* (C) 2013 Viresh Kumar <viresh.kumar@linaro.org>
*
* Oct 2005 - Ashok Raj <ashok.raj@intel.com>
* Added handling for CPU hotplug
@ -12,12 +13,13 @@
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <asm/cputime.h>
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/notifier.h>
@ -25,6 +27,7 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/tick.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/cpu.h>
@ -41,11 +44,13 @@
*/
static struct cpufreq_driver *cpufreq_driver;
static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
static DEFINE_RWLOCK(cpufreq_driver_lock);
static DEFINE_MUTEX(cpufreq_governor_lock);
#ifdef CONFIG_HOTPLUG_CPU
/* This one keeps track of the previously set governor of a removed CPU */
static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
#endif
static DEFINE_RWLOCK(cpufreq_driver_lock);
/*
* cpu_policy_rwsem is a per CPU reader-writer semaphore designed to cure
@ -132,6 +137,51 @@ bool have_governor_per_policy(void)
{
return cpufreq_driver->have_governor_per_policy;
}
EXPORT_SYMBOL_GPL(have_governor_per_policy);
struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy)
{
if (have_governor_per_policy())
return &policy->kobj;
else
return cpufreq_global_kobject;
}
EXPORT_SYMBOL_GPL(get_governor_parent_kobj);
static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
{
u64 idle_time;
u64 cur_wall_time;
u64 busy_time;
cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
idle_time = cur_wall_time - busy_time;
if (wall)
*wall = cputime_to_usecs(cur_wall_time);
return cputime_to_usecs(idle_time);
}
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
{
u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
if (idle_time == -1ULL)
return get_cpu_idle_time_jiffy(cpu, wall);
else if (!io_busy)
idle_time += get_cpu_iowait_time_us(cpu, wall);
return idle_time;
}
EXPORT_SYMBOL_GPL(get_cpu_idle_time);
static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
{
@ -150,7 +200,6 @@ static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
if (!try_module_get(cpufreq_driver->owner))
goto err_out_unlock;
/* get the CPU */
data = per_cpu(cpufreq_cpu_data, cpu);
@ -220,7 +269,7 @@ static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *data)
*/
#ifndef CONFIG_SMP
static unsigned long l_p_j_ref;
static unsigned int l_p_j_ref_freq;
static unsigned int l_p_j_ref_freq;
static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
{
@ -233,7 +282,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
pr_debug("saving %lu as reference value for loops_per_jiffy; "
"freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
}
if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) ||
if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) ||
(val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
ci->new);
@ -248,8 +297,7 @@ static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
}
#endif
void __cpufreq_notify_transition(struct cpufreq_policy *policy,
static void __cpufreq_notify_transition(struct cpufreq_policy *policy,
struct cpufreq_freqs *freqs, unsigned int state)
{
BUG_ON(irqs_disabled());
@ -294,6 +342,7 @@ void __cpufreq_notify_transition(struct cpufreq_policy *policy,
break;
}
}
/**
* cpufreq_notify_transition - call notifier chain and adjust_jiffies
* on frequency transition.
@ -311,7 +360,6 @@ void cpufreq_notify_transition(struct cpufreq_policy *policy,
EXPORT_SYMBOL_GPL(cpufreq_notify_transition);
/*********************************************************************
* SYSFS INTERFACE *
*********************************************************************/
@ -376,7 +424,6 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
return err;
}
/**
* cpufreq_per_cpu_attr_read() / show_##file_name() -
* print out cpufreq information
@ -441,7 +488,6 @@ static ssize_t show_cpuinfo_cur_freq(struct cpufreq_policy *policy,
return sprintf(buf, "%u\n", cur_freq);
}
/**
* show_scaling_governor - show the current policy for the specified CPU
*/
@ -457,7 +503,6 @@ static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf)
return -EINVAL;
}
/**
* store_scaling_governor - store policy for the specified CPU
*/
@ -480,8 +525,10 @@ 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 */
/*
* Do not use cpufreq_set_policy here or the user_policy.max
* will be wrongly overridden
*/
ret = __cpufreq_set_policy(policy, &new_policy);
policy->user_policy.policy = policy->policy;
@ -630,9 +677,6 @@ static struct attribute *default_attrs[] = {
NULL
};
struct kobject *cpufreq_global_kobject;
EXPORT_SYMBOL(cpufreq_global_kobject);
#define to_policy(k) container_of(k, struct cpufreq_policy, kobj)
#define to_attr(a) container_of(a, struct freq_attr, attr)
@ -703,6 +747,49 @@ static struct kobj_type ktype_cpufreq = {
.release = cpufreq_sysfs_release,
};
struct kobject *cpufreq_global_kobject;
EXPORT_SYMBOL(cpufreq_global_kobject);
static int cpufreq_global_kobject_usage;
int cpufreq_get_global_kobject(void)
{
if (!cpufreq_global_kobject_usage++)
return kobject_add(cpufreq_global_kobject,
&cpu_subsys.dev_root->kobj, "%s", "cpufreq");
return 0;
}
EXPORT_SYMBOL(cpufreq_get_global_kobject);
void cpufreq_put_global_kobject(void)
{
if (!--cpufreq_global_kobject_usage)
kobject_del(cpufreq_global_kobject);
}
EXPORT_SYMBOL(cpufreq_put_global_kobject);
int cpufreq_sysfs_create_file(const struct attribute *attr)
{
int ret = cpufreq_get_global_kobject();
if (!ret) {
ret = sysfs_create_file(cpufreq_global_kobject, attr);
if (ret)
cpufreq_put_global_kobject();
}
return ret;
}
EXPORT_SYMBOL(cpufreq_sysfs_create_file);
void cpufreq_sysfs_remove_file(const struct attribute *attr)
{
sysfs_remove_file(cpufreq_global_kobject, attr);
cpufreq_put_global_kobject();
}
EXPORT_SYMBOL(cpufreq_sysfs_remove_file);
/* symlink affected CPUs */
static int cpufreq_add_dev_symlink(unsigned int cpu,
struct cpufreq_policy *policy)
@ -1005,7 +1092,8 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
* Caller should already have policy_rwsem in write mode for this CPU.
* This routine frees the rwsem before returning.
*/
static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
static int __cpufreq_remove_dev(struct device *dev,
struct subsys_interface *sif)
{
unsigned int cpu = dev->id, ret, cpus;
unsigned long flags;
@ -1112,7 +1200,6 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
return 0;
}
static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
{
unsigned int cpu = dev->id;
@ -1125,7 +1212,6 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
return retval;
}
static void handle_update(struct work_struct *work)
{
struct cpufreq_policy *policy =
@ -1136,7 +1222,8 @@ static void handle_update(struct work_struct *work)
}
/**
* cpufreq_out_of_sync - If actual and saved CPU frequency differs, we're in deep trouble.
* cpufreq_out_of_sync - If actual and saved CPU frequency differs, we're
* in deep trouble.
* @cpu: cpu number
* @old_freq: CPU frequency the kernel thinks the CPU runs at
* @new_freq: CPU frequency the CPU actually runs at
@ -1151,7 +1238,6 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
struct cpufreq_freqs freqs;
unsigned long flags;
pr_debug("Warning: CPU frequency out of sync: cpufreq and timing "
"core thinks of %u, is %u kHz.\n", old_freq, new_freq);
@ -1166,7 +1252,6 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
}
/**
* cpufreq_quick_get - get the CPU frequency (in kHz) from policy->cur
* @cpu: CPU number
@ -1212,7 +1297,6 @@ unsigned int cpufreq_quick_get_max(unsigned int cpu)
}
EXPORT_SYMBOL(cpufreq_quick_get_max);
static unsigned int __cpufreq_get(unsigned int cpu)
{
struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);
@ -1271,7 +1355,6 @@ static struct subsys_interface cpufreq_interface = {
.remove_dev = cpufreq_remove_dev,
};
/**
* cpufreq_bp_suspend - Prepare the boot CPU for system suspend.
*
@ -1408,11 +1491,10 @@ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list)
}
EXPORT_SYMBOL(cpufreq_register_notifier);
/**
* cpufreq_unregister_notifier - unregister a driver with cpufreq
* @nb: notifier block to be unregistered
* @list: CPUFREQ_TRANSITION_NOTIFIER or CPUFREQ_POLICY_NOTIFIER
* @list: CPUFREQ_TRANSITION_NOTIFIER or CPUFREQ_POLICY_NOTIFIER
*
* Remove a driver from the CPU frequency notifier list.
*
@ -1448,7 +1530,6 @@ EXPORT_SYMBOL(cpufreq_unregister_notifier);
* GOVERNORS *
*********************************************************************/
int __cpufreq_driver_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
@ -1484,10 +1565,6 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
{
int ret = -EINVAL;
policy = cpufreq_cpu_get(policy->cpu);
if (!policy)
goto no_policy;
if (unlikely(lock_policy_rwsem_write(policy->cpu)))
goto fail;
@ -1496,30 +1573,19 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
unlock_policy_rwsem_write(policy->cpu);
fail:
cpufreq_cpu_put(policy);
no_policy:
return ret;
}
EXPORT_SYMBOL_GPL(cpufreq_driver_target);
int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu)
{
int ret = 0;
if (cpufreq_disabled())
return ret;
return 0;
if (!cpufreq_driver->getavg)
return 0;
policy = cpufreq_cpu_get(policy->cpu);
if (!policy)
return -EINVAL;
ret = cpufreq_driver->getavg(policy, cpu);
cpufreq_cpu_put(policy);
return ret;
return cpufreq_driver->getavg(policy, cpu);
}
EXPORT_SYMBOL_GPL(__cpufreq_driver_getavg);
@ -1562,6 +1628,21 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
pr_debug("__cpufreq_governor for CPU %u, event %u\n",
policy->cpu, event);
mutex_lock(&cpufreq_governor_lock);
if ((!policy->governor_enabled && (event == CPUFREQ_GOV_STOP)) ||
(policy->governor_enabled && (event == CPUFREQ_GOV_START))) {
mutex_unlock(&cpufreq_governor_lock);
return -EBUSY;
}
if (event == CPUFREQ_GOV_STOP)
policy->governor_enabled = false;
else if (event == CPUFREQ_GOV_START)
policy->governor_enabled = true;
mutex_unlock(&cpufreq_governor_lock);
ret = policy->governor->governor(policy, event);
if (!ret) {
@ -1569,6 +1650,14 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
policy->governor->initialized++;
else if (event == CPUFREQ_GOV_POLICY_EXIT)
policy->governor->initialized--;
} else {
/* Restore original values */
mutex_lock(&cpufreq_governor_lock);
if (event == CPUFREQ_GOV_STOP)
policy->governor_enabled = true;
else if (event == CPUFREQ_GOV_START)
policy->governor_enabled = false;
mutex_unlock(&cpufreq_governor_lock);
}
/* we keep one module reference alive for
@ -1581,7 +1670,6 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
return ret;
}
int cpufreq_register_governor(struct cpufreq_governor *governor)
{
int err;
@ -1606,7 +1694,6 @@ int cpufreq_register_governor(struct cpufreq_governor *governor)
}
EXPORT_SYMBOL_GPL(cpufreq_register_governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor)
{
#ifdef CONFIG_HOTPLUG_CPU
@ -1636,7 +1723,6 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor)
EXPORT_SYMBOL_GPL(cpufreq_unregister_governor);
/*********************************************************************
* POLICY INTERFACE *
*********************************************************************/
@ -1665,7 +1751,6 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu)
}
EXPORT_SYMBOL(cpufreq_get_policy);
/*
* data : current policy.
* policy : policy to be set.
@ -1699,8 +1784,10 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data,
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_INCOMPATIBLE, policy);
/* verify the cpu speed can be set within this limit,
which might be different to the first one */
/*
* verify the cpu speed can be set within this limit, which might be
* different to the first one
*/
ret = cpufreq_driver->verify(policy);
if (ret)
goto error_out;
@ -1802,8 +1889,10 @@ int cpufreq_update_policy(unsigned int cpu)
policy.policy = data->user_policy.policy;
policy.governor = data->user_policy.governor;
/* BIOS might change freq behind our back
-> ask driver for current freq and notify governors about a change */
/*
* BIOS might change freq behind our back
* -> ask driver for current freq and notify governors about a change
*/
if (cpufreq_driver->get) {
policy.cur = cpufreq_driver->get(cpu);
if (!data->cur) {
@ -1852,7 +1941,7 @@ static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb,
}
static struct notifier_block __refdata cpufreq_cpu_notifier = {
.notifier_call = cpufreq_cpu_callback,
.notifier_call = cpufreq_cpu_callback,
};
/*********************************************************************
@ -1864,7 +1953,7 @@ static struct notifier_block __refdata cpufreq_cpu_notifier = {
* @driver_data: A struct cpufreq_driver containing the values#
* submitted by the CPU Frequency driver.
*
* Registers a CPU Frequency driver to this core code. This code
* Registers a CPU Frequency driver to this core code. This code
* returns zero on success, -EBUSY when another driver got here first
* (and isn't unregistered in the meantime).
*
@ -1931,11 +2020,10 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
}
EXPORT_SYMBOL_GPL(cpufreq_register_driver);
/**
* cpufreq_unregister_driver - unregister the current CPUFreq driver
*
* Unregister the current CPUFreq driver. Only call this if you have
* Unregister the current CPUFreq driver. Only call this if you have
* the right to do so, i.e. if you have succeeded in initialising before!
* Returns zero if successful, and -EINVAL if the cpufreq_driver is
* currently not initialised.
@ -1972,7 +2060,7 @@ static int __init cpufreq_core_init(void)
init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
}
cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
cpufreq_global_kobject = kobject_create();
BUG_ON(!cpufreq_global_kobject);
register_syscore_ops(&cpufreq_syscore_ops);

50
drivers/cpufreq/cpufreq_governor.c
View file

@ -23,21 +23,12 @@
#include <linux/kernel_stat.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/tick.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/cpu.h>
#include "cpufreq_governor.h"
static struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy)
{
if (have_governor_per_policy())
return &policy->kobj;
else
return cpufreq_global_kobject;
}
static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
{
if (have_governor_per_policy())
@ -46,41 +37,6 @@ static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
return dbs_data->cdata->attr_group_gov_sys;
}
static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
{
u64 idle_time;
u64 cur_wall_time;
u64 busy_time;
cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
idle_time = cur_wall_time - busy_time;
if (wall)
*wall = cputime_to_usecs(cur_wall_time);
return cputime_to_usecs(idle_time);
}
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
{
u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
if (idle_time == -1ULL)
return get_cpu_idle_time_jiffy(cpu, wall);
else if (!io_busy)
idle_time += get_cpu_iowait_time_us(cpu, wall);
return idle_time;
}
EXPORT_SYMBOL_GPL(get_cpu_idle_time);
void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
{
struct cpu_dbs_common_info *cdbs = dbs_data->cdata->get_cpu_cdbs(cpu);
@ -278,6 +234,9 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
return rc;
}
if (!have_governor_per_policy())
WARN_ON(cpufreq_get_global_kobject());
rc = sysfs_create_group(get_governor_parent_kobj(policy),
get_sysfs_attr(dbs_data));
if (rc) {
@ -316,6 +275,9 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
sysfs_remove_group(get_governor_parent_kobj(policy),
get_sysfs_attr(dbs_data));
if (!have_governor_per_policy())
cpufreq_put_global_kobject();
if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
(policy->governor->initialized == 1)) {
struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;

5
drivers/cpufreq/cpufreq_governor.h
View file

@ -81,7 +81,7 @@ static ssize_t show_##file_name##_gov_sys \
return sprintf(buf, "%u\n", tuners->file_name); \
} \
\
static ssize_t show_##file_name##_gov_pol \
static ssize_t show_##file_name##_gov_pol \
(struct cpufreq_policy *policy, char *buf) \
{ \
struct dbs_data *dbs_data = policy->governor_data; \
@ -91,7 +91,7 @@ static ssize_t show_##file_name##_gov_pol \
#define store_one(_gov, file_name) \
static ssize_t store_##file_name##_gov_sys \
(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) \
(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) \
{ \
struct dbs_data *dbs_data = _gov##_dbs_cdata.gdbs_data; \
return store_##file_name(dbs_data, buf, count); \
@ -256,7 +256,6 @@ static ssize_t show_sampling_rate_min_gov_pol \
return sprintf(buf, "%u\n", dbs_data->min_sampling_rate); \
}
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
void dbs_check_cpu(struct dbs_data *dbs_data, int cpu);
bool need_load_eval(struct cpu_dbs_common_info *cdbs,
unsigned int sampling_rate);

4
drivers/cpufreq/cpufreq_performance.c
View file

@ -17,7 +17,6 @@
#include <linux/cpufreq.h>
#include <linux/init.h>
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
@ -44,19 +43,16 @@ struct cpufreq_governor cpufreq_gov_performance = {
.owner = THIS_MODULE,
};
static int __init cpufreq_gov_performance_init(void)
{
return cpufreq_register_governor(&cpufreq_gov_performance);
}
static void __exit cpufreq_gov_performance_exit(void)
{
cpufreq_unregister_governor(&cpufreq_gov_performance);
}
MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
MODULE_LICENSE("GPL");

6
drivers/cpufreq/cpufreq_powersave.c
View file

@ -1,7 +1,7 @@
/*
* linux/drivers/cpufreq/cpufreq_powersave.c
* linux/drivers/cpufreq/cpufreq_powersave.c
*
* Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
*
*
* This program is free software; you can redistribute it and/or modify
@ -48,13 +48,11 @@ static int __init cpufreq_gov_powersave_init(void)
return cpufreq_register_governor(&cpufreq_gov_powersave);
}
static void __exit cpufreq_gov_powersave_exit(void)
{
cpufreq_unregister_governor(&cpufreq_gov_powersave);
}
MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
MODULE_LICENSE("GPL");

4
drivers/cpufreq/cpufreq_stats.c
View file

@ -27,7 +27,7 @@ static spinlock_t cpufreq_stats_lock;
struct cpufreq_stats {
unsigned int cpu;
unsigned int total_trans;
unsigned long long last_time;
unsigned long long last_time;
unsigned int max_state;
unsigned int state_num;
unsigned int last_index;
@ -116,7 +116,7 @@ static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
len += snprintf(buf + len, PAGE_SIZE - len, "%9u: ",
stat->freq_table[i]);
for (j = 0; j < stat->state_num; j++) {
for (j = 0; j < stat->state_num; j++) {
if (len >= PAGE_SIZE)
break;
len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",

114
drivers/cpufreq/cpufreq_userspace.c
View file

@ -13,55 +13,13 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/cpufreq.h>
#include <linux/cpu.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/sysfs.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mutex.h>
/**
* A few values needed by the userspace governor
*/
static DEFINE_PER_CPU(unsigned int, cpu_max_freq);
static DEFINE_PER_CPU(unsigned int, cpu_min_freq);
static DEFINE_PER_CPU(unsigned int, cpu_cur_freq); /* current CPU freq */
static DEFINE_PER_CPU(unsigned int, cpu_set_freq); /* CPU freq desired by
userspace */
static DEFINE_PER_CPU(unsigned int, cpu_is_managed);
static DEFINE_MUTEX(userspace_mutex);
static int cpus_using_userspace_governor;
/* keep track of frequency transitions */
static int
userspace_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
void *data)
{
struct cpufreq_freqs *freq = data;
if (!per_cpu(cpu_is_managed, freq->cpu))
return 0;
if (val == CPUFREQ_POSTCHANGE) {
pr_debug("saving cpu_cur_freq of cpu %u to be %u kHz\n",
freq->cpu, freq->new);
per_cpu(cpu_cur_freq, freq->cpu) = freq->new;
}
return 0;
}
static struct notifier_block userspace_cpufreq_notifier_block = {
.notifier_call = userspace_cpufreq_notifier
};
/**
* cpufreq_set - set the CPU frequency
@ -80,13 +38,6 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
if (!per_cpu(cpu_is_managed, policy->cpu))
goto err;
per_cpu(cpu_set_freq, policy->cpu) = freq;
if (freq < per_cpu(cpu_min_freq, policy->cpu))
freq = per_cpu(cpu_min_freq, policy->cpu);
if (freq > per_cpu(cpu_max_freq, policy->cpu))
freq = per_cpu(cpu_max_freq, policy->cpu);
/*
* We're safe from concurrent calls to ->target() here
* as we hold the userspace_mutex lock. If we were calling
@ -104,10 +55,9 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
return ret;
}
static ssize_t show_speed(struct cpufreq_policy *policy, char *buf)
{
return sprintf(buf, "%u\n", per_cpu(cpu_cur_freq, policy->cpu));
return sprintf(buf, "%u\n", policy->cur);
}
static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
@ -119,73 +69,37 @@ static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
switch (event) {
case CPUFREQ_GOV_START:
BUG_ON(!policy->cur);
pr_debug("started managing cpu %u\n", cpu);
mutex_lock(&userspace_mutex);
if (cpus_using_userspace_governor == 0) {
cpufreq_register_notifier(
&userspace_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
}
cpus_using_userspace_governor++;
per_cpu(cpu_is_managed, cpu) = 1;
per_cpu(cpu_min_freq, cpu) = policy->min;
per_cpu(cpu_max_freq, cpu) = policy->max;
per_cpu(cpu_cur_freq, cpu) = policy->cur;
per_cpu(cpu_set_freq, cpu) = policy->cur;
pr_debug("managing cpu %u started "
"(%u - %u kHz, currently %u kHz)\n",
cpu,
per_cpu(cpu_min_freq, cpu),
per_cpu(cpu_max_freq, cpu),
per_cpu(cpu_cur_freq, cpu));
mutex_unlock(&userspace_mutex);
break;
case CPUFREQ_GOV_STOP:
mutex_lock(&userspace_mutex);
cpus_using_userspace_governor--;
if (cpus_using_userspace_governor == 0) {
cpufreq_unregister_notifier(
&userspace_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
}
per_cpu(cpu_is_managed, cpu) = 0;
per_cpu(cpu_min_freq, cpu) = 0;
per_cpu(cpu_max_freq, cpu) = 0;
per_cpu(cpu_set_freq, cpu) = 0;
pr_debug("managing cpu %u stopped\n", cpu);
mutex_lock(&userspace_mutex);
per_cpu(cpu_is_managed, cpu) = 0;
mutex_unlock(&userspace_mutex);
break;
case CPUFREQ_GOV_LIMITS:
mutex_lock(&userspace_mutex);
pr_debug("limit event for cpu %u: %u - %u kHz, "
"currently %u kHz, last set to %u kHz\n",
pr_debug("limit event for cpu %u: %u - %u kHz, currently %u kHz\n",
cpu, policy->min, policy->max,
per_cpu(cpu_cur_freq, cpu),
per_cpu(cpu_set_freq, cpu));
if (policy->max < per_cpu(cpu_set_freq, cpu)) {
policy->cur);
if (policy->max < policy->cur)
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
} else if (policy->min > per_cpu(cpu_set_freq, cpu)) {
else if (policy->min > policy->cur)
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_L);
} else {
__cpufreq_driver_target(policy,
per_cpu(cpu_set_freq, cpu),
CPUFREQ_RELATION_L);
}
per_cpu(cpu_min_freq, cpu) = policy->min;
per_cpu(cpu_max_freq, cpu) = policy->max;
per_cpu(cpu_cur_freq, cpu) = policy->cur;
mutex_unlock(&userspace_mutex);
break;
}
return rc;
}
#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE
static
#endif
@ -202,13 +116,11 @@ static int __init cpufreq_gov_userspace_init(void)
return cpufreq_register_governor(&cpufreq_gov_userspace);
}
static void __exit cpufreq_gov_userspace_exit(void)
{
cpufreq_unregister_governor(&cpufreq_gov_userspace);
}
MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>, "
"Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("CPUfreq policy governor 'userspace'");

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

@ -114,6 +114,9 @@ static int davinci_target(struct cpufreq_policy *policy,
pdata->set_voltage(idx);
out:
if (ret)
freqs.new = freqs.old;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return ret;

4
drivers/cpufreq/dbx500-cpufreq.c
View file

@ -57,13 +57,13 @@ static int dbx500_cpufreq_target(struct cpufreq_policy *policy,
if (ret) {
pr_err("dbx500-cpufreq: Failed to set armss_clk to %d Hz: error %d\n",
freqs.new * 1000, ret);
return ret;
freqs.new = freqs.old;
}
/* post change notification */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
return ret;
}
static unsigned int dbx500_cpufreq_getspeed(unsigned int cpu)

11
drivers/cpufreq/e_powersaver.c
View file

@ -161,6 +161,9 @@ static int eps_set_state(struct eps_cpu_data *centaur,
current_multiplier);
}
#endif
if (err)
freqs.new = freqs.old;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return err;
}
@ -188,7 +191,7 @@ static int eps_target(struct cpufreq_policy *policy,
}
/* Make frequency transition */
dest_state = centaur->freq_table[newstate].index & 0xffff;
dest_state = centaur->freq_table[newstate].driver_data & 0xffff;
ret = eps_set_state(centaur, policy, dest_state);
if (ret)
printk(KERN_ERR "eps: Timeout!\n");
@ -380,9 +383,9 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
f_table = &centaur->freq_table[0];
if (brand != EPS_BRAND_C7M) {
f_table[0].frequency = fsb * min_multiplier;
f_table[0].index = (min_multiplier << 8) | min_voltage;
f_table[0].driver_data = (min_multiplier << 8) | min_voltage;
f_table[1].frequency = fsb * max_multiplier;
f_table[1].index = (max_multiplier << 8) | max_voltage;
f_table[1].driver_data = (max_multiplier << 8) | max_voltage;
f_table[2].frequency = CPUFREQ_TABLE_END;
} else {
k = 0;
@ -391,7 +394,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
for (i = min_multiplier; i <= max_multiplier; i++) {
voltage = (k * step) / 256 + min_voltage;
f_table[k].frequency = fsb * i;
f_table[k].index = (i << 8) | voltage;
f_table[k].driver_data = (i << 8) | voltage;
k++;
}
f_table[k].frequency = CPUFREQ_TABLE_END;

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

@ -113,7 +113,8 @@ static int exynos_cpufreq_scale(unsigned int target_freq)
if (ret) {
pr_err("%s: failed to set cpu voltage to %d\n",
__func__, arm_volt);
goto out;
freqs.new = freqs.old;
goto post_notify;
}
}
@ -123,14 +124,19 @@ static int exynos_cpufreq_scale(unsigned int target_freq)
if (ret) {
pr_err("%s: failed to set cpu voltage to %d\n",
__func__, safe_arm_volt);
goto out;
freqs.new = freqs.old;
goto post_notify;
}
}
exynos_info->set_freq(old_index, index);
post_notify:
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
if (ret)
goto out;
/* When the new frequency is lower than current frequency */
if ((freqs.new < freqs.old) ||
((freqs.new > freqs.old) && safe_arm_volt)) {

26
drivers/cpufreq/freq_table.c
View file

@ -34,8 +34,8 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
continue;
}
pr_debug("table entry %u: %u kHz, %u index\n",
i, freq, table[i].index);
pr_debug("table entry %u: %u kHz, %u driver_data\n",
i, freq, table[i].driver_data);
if (freq < min_freq)
min_freq = freq;
if (freq > max_freq)
@ -97,11 +97,11 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
unsigned int *index)
{
struct cpufreq_frequency_table optimal = {
.index = ~0,
.driver_data = ~0,
.frequency = 0,
};
struct cpufreq_frequency_table suboptimal = {
.index = ~0,
.driver_data = ~0,
.frequency = 0,
};
unsigned int i;
@ -129,12 +129,12 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
if (freq <= target_freq) {
if (freq >= optimal.frequency) {
optimal.frequency = freq;
optimal.index = i;
optimal.driver_data = i;
}
} else {
if (freq <= suboptimal.frequency) {
suboptimal.frequency = freq;
suboptimal.index = i;
suboptimal.driver_data = i;
}
}
break;
@ -142,26 +142,26 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
if (freq >= target_freq) {
if (freq <= optimal.frequency) {
optimal.frequency = freq;
optimal.index = i;
optimal.driver_data = i;
}
} else {
if (freq >= suboptimal.frequency) {
suboptimal.frequency = freq;
suboptimal.index = i;
suboptimal.driver_data = i;
}
}
break;
}
}
if (optimal.index > i) {
if (suboptimal.index > i)
if (optimal.driver_data > i) {
if (suboptimal.driver_data > i)
return -EINVAL;
*index = suboptimal.index;
*index = suboptimal.driver_data;
} else
*index = optimal.index;
*index = optimal.driver_data;
pr_debug("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
table[*index].index);
table[*index].driver_data);
return 0;
}

2
drivers/cpufreq/ia64-acpi-cpufreq.c
View file

@ -326,7 +326,7 @@ acpi_cpufreq_cpu_init (
/* table init */
for (i = 0; i <= data->acpi_data.state_count; i++)
{
data->freq_table[i].index = 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;

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

@ -68,8 +68,6 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
if (freqs.old == freqs.new)
return 0;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
rcu_read_lock();
opp = opp_find_freq_ceil(cpu_dev, &freq_hz);
if (IS_ERR(opp)) {
@ -86,13 +84,16 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
freqs.old / 1000, volt_old / 1000,
freqs.new / 1000, volt / 1000);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* scaling up? scale voltage before frequency */
if (freqs.new > freqs.old) {
ret = regulator_set_voltage_tol(arm_reg, volt, 0);
if (ret) {
dev_err(cpu_dev,
"failed to scale vddarm up: %d\n", ret);
return ret;
freqs.new = freqs.old;
goto post_notify;
}
/*
@ -145,15 +146,18 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
if (ret) {
dev_err(cpu_dev, "failed to set clock rate: %d\n", ret);
regulator_set_voltage_tol(arm_reg, volt_old, 0);
return ret;
freqs.new = freqs.old;
goto post_notify;
}
/* scaling down? scale voltage after frequency */
if (freqs.new < freqs.old) {
ret = regulator_set_voltage_tol(arm_reg, volt, 0);
if (ret)
if (ret) {
dev_warn(cpu_dev,
"failed to scale vddarm down: %d\n", ret);
ret = 0;
}
if (freqs.old == FREQ_1P2_GHZ / 1000) {
regulator_set_voltage_tol(pu_reg,
@ -163,9 +167,10 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
}
}
post_notify:
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
return ret;
}
static int imx6q_cpufreq_init(struct cpufreq_policy *policy)

2
drivers/cpufreq/kirkwood-cpufreq.c
View file

@ -59,7 +59,7 @@ static void kirkwood_cpufreq_set_cpu_state(struct cpufreq_policy *policy,
unsigned int index)
{
struct cpufreq_freqs freqs;
unsigned int state = kirkwood_freq_table[index].index;
unsigned int state = kirkwood_freq_table[index].driver_data;
unsigned long reg;
freqs.old = kirkwood_cpufreq_get_cpu_frequency(0);

16
drivers/cpufreq/longhaul.c
View file

@ -254,7 +254,7 @@ static void longhaul_setstate(struct cpufreq_policy *policy,
u32 bm_timeout = 1000;
unsigned int dir = 0;
mults_index = longhaul_table[table_index].index;
mults_index = longhaul_table[table_index].driver_data;
/* Safety precautions */
mult = mults[mults_index & 0x1f];
if (mult == -1)
@ -487,7 +487,7 @@ static int __cpuinit longhaul_get_ranges(void)
if (ratio > maxmult || ratio < minmult)
continue;
longhaul_table[k].frequency = calc_speed(ratio);
longhaul_table[k].index = j;
longhaul_table[k].driver_data = j;
k++;
}
if (k <= 1) {
@ -508,8 +508,8 @@ static int __cpuinit longhaul_get_ranges(void)
if (min_i != j) {
swap(longhaul_table[j].frequency,
longhaul_table[min_i].frequency);
swap(longhaul_table[j].index,
longhaul_table[min_i].index);
swap(longhaul_table[j].driver_data,
longhaul_table[min_i].driver_data);
}
}
@ -517,7 +517,7 @@ static int __cpuinit longhaul_get_ranges(void)
/* Find index we are running on */
for (j = 0; j < k; j++) {
if (mults[longhaul_table[j].index & 0x1f] == mult) {
if (mults[longhaul_table[j].driver_data & 0x1f] == mult) {
longhaul_index = j;
break;
}
@ -613,7 +613,7 @@ static void __cpuinit longhaul_setup_voltagescaling(void)
pos = (speed - min_vid_speed) / kHz_step + minvid.pos;
else
pos = minvid.pos;
longhaul_table[j].index |= mV_vrm_table[pos] << 8;
longhaul_table[j].driver_data |= mV_vrm_table[pos] << 8;
vid = vrm_mV_table[mV_vrm_table[pos]];
printk(KERN_INFO PFX "f: %d kHz, index: %d, vid: %d mV\n",
speed, j, vid.mV);
@ -656,12 +656,12 @@ static int longhaul_target(struct cpufreq_policy *policy,
* this in hardware, C3 is old and we need to do this
* in software. */
i = longhaul_index;
current_vid = (longhaul_table[longhaul_index].index >> 8);
current_vid = (longhaul_table[longhaul_index].driver_data >> 8);
current_vid &= 0x1f;
if (table_index > longhaul_index)
dir = 1;
while (i != table_index) {
vid = (longhaul_table[i].index >> 8) & 0x1f;
vid = (longhaul_table[i].driver_data >> 8) & 0x1f;
if (vid != current_vid) {
longhaul_setstate(policy, i);
current_vid = vid;

2
drivers/cpufreq/loongson2_cpufreq.c
View file

@ -72,7 +72,7 @@ static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
freq =
((cpu_clock_freq / 1000) *
loongson2_clockmod_table[newstate].index) / 8;
loongson2_clockmod_table[newstate].driver_data) / 8;
if (freq < policy->min || freq > policy->max)
return -EINVAL;

6
drivers/cpufreq/omap-cpufreq.c
View file

@ -93,9 +93,6 @@ static int omap_target(struct cpufreq_policy *policy,
if (freqs.old == freqs.new && policy->cur == freqs.new)
return ret;
/* notifiers */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
freq = freqs.new * 1000;
ret = clk_round_rate(mpu_clk, freq);
if (IS_ERR_VALUE(ret)) {
@ -125,6 +122,9 @@ static int omap_target(struct cpufreq_policy *policy,
freqs.old / 1000, volt_old ? volt_old / 1000 : -1,
freqs.new / 1000, volt ? volt / 1000 : -1);
/* notifiers */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
/* scaling up? scale voltage before frequency */
if (mpu_reg && (freqs.new > freqs.old)) {
r = regulator_set_voltage(mpu_reg, volt - tol, volt + tol);

4
drivers/cpufreq/p4-clockmod.c
View file

@ -118,7 +118,7 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
return -EINVAL;
freqs.old = cpufreq_p4_get(policy->cpu);
freqs.new = stock_freq * p4clockmod_table[newstate].index / 8;
freqs.new = stock_freq * p4clockmod_table[newstate].driver_data / 8;
if (freqs.new == freqs.old)
return 0;
@ -131,7 +131,7 @@ 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].index);
cpufreq_p4_setdc(i, p4clockmod_table[newstate].driver_data);
/* notifiers */
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);

5
arch/powerpc/platforms/pasemi/cpufreq.c → drivers/cpufreq/pasemi-cpufreq.c
View file

@ -204,7 +204,8 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* initialize frequency table */
for (i=0; pas_freqs[i].frequency!=CPUFREQ_TABLE_END; i++) {
pas_freqs[i].frequency = get_astate_freq(pas_freqs[i].index) * 100000;
pas_freqs[i].frequency =
get_astate_freq(pas_freqs[i].driver_data) * 100000;
pr_debug("%d: %d\n", i, pas_freqs[i].frequency);
}
@ -280,7 +281,7 @@ static int pas_cpufreq_target(struct cpufreq_policy *policy,
pr_debug("setting frequency for cpu %d to %d kHz, 1/%d of max frequency\n",
policy->cpu,
pas_freqs[pas_astate_new].frequency,
pas_freqs[pas_astate_new].index);
pas_freqs[pas_astate_new].driver_data);
current_astate = pas_astate_new;

2
drivers/cpufreq/pcc-cpufreq.c
View file

@ -243,6 +243,8 @@ static int pcc_cpufreq_target(struct cpufreq_policy *policy,
return 0;
cmd_incomplete:
freqs.new = freqs.old;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
iowrite16(0, &pcch_hdr->status);
spin_unlock(&pcc_lock);
return -EINVAL;

0
arch/powerpc/platforms/powermac/cpufreq_32.c → drivers/cpufreq/pmac32-cpufreq.c
View file

0
arch/powerpc/platforms/powermac/cpufreq_64.c → drivers/cpufreq/pmac64-cpufreq.c
View file

8
drivers/cpufreq/powernow-k6.c
View file

@ -58,7 +58,7 @@ static int powernow_k6_get_cpu_multiplier(void)
msrval = POWERNOW_IOPORT + 0x0;
wrmsr(MSR_K6_EPMR, msrval, 0); /* disable it again */
return clock_ratio[(invalue >> 5)&7].index;
return clock_ratio[(invalue >> 5)&7].driver_data;
}
@ -75,13 +75,13 @@ static void powernow_k6_set_state(struct cpufreq_policy *policy,
unsigned long msrval;
struct cpufreq_freqs freqs;
if (clock_ratio[best_i].index > max_multiplier) {
if (clock_ratio[best_i].driver_data > max_multiplier) {
printk(KERN_ERR PFX "invalid target frequency\n");
return;
}
freqs.old = busfreq * powernow_k6_get_cpu_multiplier();
freqs.new = busfreq * clock_ratio[best_i].index;
freqs.new = busfreq * clock_ratio[best_i].driver_data;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
@ -156,7 +156,7 @@ static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
/* table init */
for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) {
f = clock_ratio[i].index;
f = clock_ratio[i].driver_data;
if (f > max_multiplier)
clock_ratio[i].frequency = CPUFREQ_ENTRY_INVALID;
else

16
drivers/cpufreq/powernow-k7.c
View file

@ -186,7 +186,7 @@ static int get_ranges(unsigned char *pst)
fid = *pst++;
powernow_table[j].frequency = (fsb * fid_codes[fid]) / 10;
powernow_table[j].index = fid; /* lower 8 bits */
powernow_table[j].driver_data = fid; /* lower 8 bits */
speed = powernow_table[j].frequency;
@ -203,7 +203,7 @@ static int get_ranges(unsigned char *pst)
maximum_speed = speed;
vid = *pst++;
powernow_table[j].index |= (vid << 8); /* upper 8 bits */
powernow_table[j].driver_data |= (vid << 8); /* upper 8 bits */
pr_debug(" FID: 0x%x (%d.%dx [%dMHz]) "
"VID: 0x%x (%d.%03dV)\n", fid, fid_codes[fid] / 10,
@ -212,7 +212,7 @@ static int get_ranges(unsigned char *pst)
mobile_vid_table[vid]%1000);
}
powernow_table[number_scales].frequency = CPUFREQ_TABLE_END;
powernow_table[number_scales].index = 0;
powernow_table[number_scales].driver_data = 0;
return 0;
}
@ -260,8 +260,8 @@ static void change_speed(struct cpufreq_policy *policy, unsigned int index)
* vid are the upper 8 bits.
*/
fid = powernow_table[index].index & 0xFF;
vid = (powernow_table[index].index & 0xFF00) >> 8;
fid = powernow_table[index].driver_data & 0xFF;
vid = (powernow_table[index].driver_data & 0xFF00) >> 8;
rdmsrl(MSR_K7_FID_VID_STATUS, fidvidstatus.val);
cfid = fidvidstatus.bits.CFID;
@ -373,8 +373,8 @@ static int powernow_acpi_init(void)
fid = pc.bits.fid;
powernow_table[i].frequency = fsb * fid_codes[fid] / 10;
powernow_table[i].index = fid; /* lower 8 bits */
powernow_table[i].index |= (vid << 8); /* upper 8 bits */
powernow_table[i].driver_data = fid; /* lower 8 bits */
powernow_table[i].driver_data |= (vid << 8); /* upper 8 bits */
speed = powernow_table[i].frequency;
speed_mhz = speed / 1000;
@ -417,7 +417,7 @@ static int powernow_acpi_init(void)
}
powernow_table[i].frequency = CPUFREQ_TABLE_END;
powernow_table[i].index = 0;
powernow_table[i].driver_data = 0;
/* notify BIOS that we exist */
acpi_processor_notify_smm(THIS_MODULE);

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

@ -584,9 +584,9 @@ static void print_basics(struct powernow_k8_data *data)
CPUFREQ_ENTRY_INVALID) {
printk(KERN_INFO PFX
"fid 0x%x (%d MHz), vid 0x%x\n",
data->powernow_table[j].index & 0xff,
data->powernow_table[j].driver_data & 0xff,
data->powernow_table[j].frequency/1000,
data->powernow_table[j].index >> 8);
data->powernow_table[j].driver_data >> 8);
}
}
if (data->batps)
@ -632,13 +632,13 @@ static int fill_powernow_table(struct powernow_k8_data *data,
for (j = 0; j < data->numps; j++) {
int freq;
powernow_table[j].index = pst[j].fid; /* lower 8 bits */
powernow_table[j].index |= (pst[j].vid << 8); /* upper 8 bits */
powernow_table[j].driver_data = pst[j].fid; /* lower 8 bits */
powernow_table[j].driver_data |= (pst[j].vid << 8); /* upper 8 bits */
freq = find_khz_freq_from_fid(pst[j].fid);
powernow_table[j].frequency = freq;
}
powernow_table[data->numps].frequency = CPUFREQ_TABLE_END;
powernow_table[data->numps].index = 0;
powernow_table[data->numps].driver_data = 0;
if (query_current_values_with_pending_wait(data)) {
kfree(powernow_table);
@ -810,7 +810,7 @@ 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].index = 0;
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)
@ -865,7 +865,7 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
pr_debug(" %d : fid 0x%x, vid 0x%x\n", i, fid, vid);
index = fid | (vid<<8);
powernow_table[i].index = index;
powernow_table[i].driver_data = index;
freq = find_khz_freq_from_fid(fid);
powernow_table[i].frequency = freq;
@ -941,8 +941,8 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data,
* the cpufreq frequency table in find_psb_table, vid
* are the upper 8 bits.
*/
fid = data->powernow_table[index].index & 0xFF;
vid = (data->powernow_table[index].index & 0xFF00) >> 8;
fid = data->powernow_table[index].driver_data & 0xFF;
vid = (data->powernow_table[index].driver_data & 0xFF00) >> 8;
pr_debug("table matched fid 0x%x, giving vid 0x%x\n", fid, vid);
@ -967,9 +967,9 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data,
res = transition_fid_vid(data, fid, vid);
if (res)
return res;
freqs.new = find_khz_freq_from_fid(data->currfid);
freqs.new = freqs.old;
else
freqs.new = find_khz_freq_from_fid(data->currfid);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return res;

380
drivers/cpufreq/ppc-corenet-cpufreq.c Normal file
View file

@ -0,0 +1,380 @@
/*
* Copyright 2013 Freescale Semiconductor, Inc.
*
* CPU Frequency Scaling driver for Freescale PowerPC corenet SoCs.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/smp.h>
/**
* struct cpu_data - per CPU data struct
* @clk: the clk of CPU
* @parent: the parent node of cpu clock
* @table: frequency table
*/
struct cpu_data {
struct clk *clk;
struct device_node *parent;
struct cpufreq_frequency_table *table;
};
/**
* struct soc_data - SoC specific data
* @freq_mask: mask the disallowed frequencies
* @flag: unique flags
*/
struct soc_data {
u32 freq_mask[4];
u32 flag;
};
#define FREQ_MASK 1
/* see hardware specification for the allowed frqeuencies */
static const struct soc_data sdata[] = {
{ /* used by p2041 and p3041 */
.freq_mask = {0x8, 0x8, 0x2, 0x2},
.flag = FREQ_MASK,
},
{ /* used by p5020 */
.freq_mask = {0x8, 0x2},
.flag = FREQ_MASK,
},
{ /* used by p4080, p5040 */
.freq_mask = {0},
.flag = 0,
},
};
/*
* the minimum allowed core frequency, in Hz
* for chassis v1.0, >= platform frequency
* for chassis v2.0, >= platform frequency / 2
*/
static u32 min_cpufreq;
static const u32 *fmask;
/* serialize frequency changes */
static DEFINE_MUTEX(cpufreq_lock);
static DEFINE_PER_CPU(struct cpu_data *, cpu_data);
/* cpumask in a cluster */
static DEFINE_PER_CPU(cpumask_var_t, cpu_mask);
#ifndef CONFIG_SMP
static inline const struct cpumask *cpu_core_mask(int cpu)
{
return cpumask_of(0);
}
#endif
static unsigned int corenet_cpufreq_get_speed(unsigned int cpu)
{
struct cpu_data *data = per_cpu(cpu_data, cpu);
return clk_get_rate(data->clk) / 1000;
}
/* reduce the duplicated frequencies in frequency table */
static void freq_table_redup(struct cpufreq_frequency_table *freq_table,
int count)
{
int i, j;
for (i = 1; i < count; i++) {
for (j = 0; j < i; j++) {
if (freq_table[j].frequency == CPUFREQ_ENTRY_INVALID ||
freq_table[j].frequency !=
freq_table[i].frequency)
continue;
freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
break;
}
}
}
/* sort the frequencies in frequency table in descenting order */
static void freq_table_sort(struct cpufreq_frequency_table *freq_table,
int count)
{
int i, j, ind;
unsigned int freq, max_freq;
struct cpufreq_frequency_table table;
for (i = 0; i < count - 1; i++) {
max_freq = freq_table[i].frequency;
ind = i;
for (j = i + 1; j < count; j++) {
freq = freq_table[j].frequency;
if (freq == CPUFREQ_ENTRY_INVALID ||
freq <= max_freq)
continue;
ind = j;
max_freq = freq;
}
if (ind != i) {
/* exchange the frequencies */
table.driver_data = freq_table[i].driver_data;
table.frequency = freq_table[i].frequency;
freq_table[i].driver_data = freq_table[ind].driver_data;
freq_table[i].frequency = freq_table[ind].frequency;
freq_table[ind].driver_data = table.driver_data;
freq_table[ind].frequency = table.frequency;
}
}
}
static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
struct device_node *np;
int i, count, ret;
u32 freq, mask;
struct clk *clk;
struct cpufreq_frequency_table *table;
struct cpu_data *data;
unsigned int cpu = policy->cpu;
np = of_get_cpu_node(cpu, NULL);
if (!np)
return -ENODEV;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
pr_err("%s: no memory\n", __func__);
goto err_np;
}
data->clk = of_clk_get(np, 0);
if (IS_ERR(data->clk)) {
pr_err("%s: no clock information\n", __func__);
goto err_nomem2;
}
data->parent = of_parse_phandle(np, "clocks", 0);
if (!data->parent) {
pr_err("%s: could not get clock information\n", __func__);
goto err_nomem2;
}
count = of_property_count_strings(data->parent, "clock-names");
table = kcalloc(count + 1, sizeof(*table), GFP_KERNEL);
if (!table) {
pr_err("%s: no memory\n", __func__);
goto err_node;
}
if (fmask)
mask = fmask[get_hard_smp_processor_id(cpu)];
else
mask = 0x0;
for (i = 0; i < count; i++) {
clk = of_clk_get(data->parent, i);
freq = clk_get_rate(clk);
/*
* the clock is valid if its frequency is not masked
* and large than minimum allowed frequency.
*/
if (freq < min_cpufreq || (mask & (1 << i)))
table[i].frequency = CPUFREQ_ENTRY_INVALID;
else
table[i].frequency = freq / 1000;
table[i].driver_data = i;
}
freq_table_redup(table, count);
freq_table_sort(table, count);
table[i].frequency = CPUFREQ_TABLE_END;
/* set the min and max frequency properly */
ret = cpufreq_frequency_table_cpuinfo(policy, table);
if (ret) {
pr_err("invalid frequency table: %d\n", ret);
goto err_nomem1;
}
data->table = table;
per_cpu(cpu_data, cpu) = data;
/* update ->cpus if we have cluster, no harm if not */
cpumask_copy(policy->cpus, per_cpu(cpu_mask, cpu));
for_each_cpu(i, per_cpu(cpu_mask, cpu))
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;
err_nomem1:
kfree(table);
err_node:
of_node_put(data->parent);
err_nomem2:
per_cpu(cpu_data, cpu) = NULL;
kfree(data);
err_np:
of_node_put(np);
return -ENODEV;
}
static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy)
{
struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
unsigned int cpu;
cpufreq_frequency_table_put_attr(policy->cpu);
of_node_put(data->parent);
kfree(data->table);
kfree(data);
for_each_cpu(cpu, per_cpu(cpu_mask, policy->cpu))
per_cpu(cpu_data, cpu) = NULL;
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)
{
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;
mutex_lock(&cpufreq_lock);
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
parent = of_clk_get(data->parent, data->table[new].driver_data);
ret = clk_set_parent(data->clk, parent);
if (ret)
freqs.new = freqs.old;
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
mutex_unlock(&cpufreq_lock);
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",
.owner = THIS_MODULE,
.flags = CPUFREQ_CONST_LOOPS,
.init = corenet_cpufreq_cpu_init,
.exit = __exit_p(corenet_cpufreq_cpu_exit),
.verify = corenet_cpufreq_verify,
.target = corenet_cpufreq_target,
.get = corenet_cpufreq_get_speed,
.attr = corenet_cpufreq_attr,
};
static const struct of_device_id node_matches[] __initdata = {
{ .compatible = "fsl,p2041-clockgen", .data = &sdata[0], },
{ .compatible = "fsl,p3041-clockgen", .data = &sdata[0], },
{ .compatible = "fsl,p5020-clockgen", .data = &sdata[1], },
{ .compatible = "fsl,p4080-clockgen", .data = &sdata[2], },
{ .compatible = "fsl,p5040-clockgen", .data = &sdata[2], },
{ .compatible = "fsl,qoriq-clockgen-2.0", },
{}
};
static int __init ppc_corenet_cpufreq_init(void)
{
int ret;
struct device_node *np;
const struct of_device_id *match;
const struct soc_data *data;
unsigned int cpu;
np = of_find_matching_node(NULL, node_matches);
if (!np)
return -ENODEV;
for_each_possible_cpu(cpu) {
if (!alloc_cpumask_var(&per_cpu(cpu_mask, cpu), GFP_KERNEL))
goto err_mask;
cpumask_copy(per_cpu(cpu_mask, cpu), cpu_core_mask(cpu));
}
match = of_match_node(node_matches, np);
data = match->data;
if (data) {
if (data->flag)
fmask = data->freq_mask;
min_cpufreq = fsl_get_sys_freq();
} else {
min_cpufreq = fsl_get_sys_freq() / 2;
}
of_node_put(np);
ret = cpufreq_register_driver(&ppc_corenet_cpufreq_driver);
if (!ret)
pr_info("Freescale PowerPC corenet CPU frequency scaling driver\n");
return ret;
err_mask:
for_each_possible_cpu(cpu)
free_cpumask_var(per_cpu(cpu_mask, cpu));
return -ENOMEM;
}
module_init(ppc_corenet_cpufreq_init);
static void __exit ppc_corenet_cpufreq_exit(void)
{
unsigned int cpu;
for_each_possible_cpu(cpu)
free_cpumask_var(per_cpu(cpu_mask, cpu));
cpufreq_unregister_driver(&ppc_corenet_cpufreq_driver);
}
module_exit(ppc_corenet_cpufreq_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Tang Yuantian <Yuantian.Tang@freescale.com>");
MODULE_DESCRIPTION("cpufreq driver for Freescale e500mc series SoCs");

4
drivers/cpufreq/ppc_cbe_cpufreq.c
View file

@ -106,7 +106,7 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* initialize frequency table */
for (i=0; cbe_freqs[i].frequency!=CPUFREQ_TABLE_END; i++) {
cbe_freqs[i].frequency = max_freq / cbe_freqs[i].index;
cbe_freqs[i].frequency = max_freq / cbe_freqs[i].driver_data;
pr_debug("%d: %d\n", i, cbe_freqs[i].frequency);
}
@ -165,7 +165,7 @@ static int cbe_cpufreq_target(struct cpufreq_policy *policy,
"1/%d of max frequency\n",
policy->cpu,
cbe_freqs[cbe_pmode_new].frequency,
cbe_freqs[cbe_pmode_new].index);
cbe_freqs[cbe_pmode_new].driver_data);
rc = set_pmode(policy->cpu, cbe_pmode_new);

8
drivers/cpufreq/pxa2xx-cpufreq.c
View file

@ -420,7 +420,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
/* Generate pxa25x the run cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA25x_RUN_FREQS; i++) {
pxa255_run_freq_table[i].frequency = pxa255_run_freqs[i].khz;
pxa255_run_freq_table[i].index = i;
pxa255_run_freq_table[i].driver_data = i;
}
pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
@ -428,7 +428,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
for (i = 0; i < NUM_PXA25x_TURBO_FREQS; i++) {
pxa255_turbo_freq_table[i].frequency =
pxa255_turbo_freqs[i].khz;
pxa255_turbo_freq_table[i].index = i;
pxa255_turbo_freq_table[i].driver_data = i;
}
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
@ -440,9 +440,9 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
if (freq > pxa27x_maxfreq)
break;
pxa27x_freq_table[i].frequency = freq;
pxa27x_freq_table[i].index = i;
pxa27x_freq_table[i].driver_data = i;
}
pxa27x_freq_table[i].index = i;
pxa27x_freq_table[i].driver_data = i;
pxa27x_freq_table[i].frequency = CPUFREQ_TABLE_END;
/*

4
drivers/cpufreq/pxa3xx-cpufreq.c
View file

@ -98,10 +98,10 @@ static int setup_freqs_table(struct cpufreq_policy *policy,
return -ENOMEM;
for (i = 0; i < num; i++) {
table[i].index = i;
table[i].driver_data = i;
table[i].frequency = freqs[i].cpufreq_mhz * 1000;
}
table[num].index = i;
table[num].driver_data = i;
table[num].frequency = CPUFREQ_TABLE_END;
pxa3xx_freqs = freqs;

6
drivers/cpufreq/s3c2416-cpufreq.c
View file

@ -244,7 +244,7 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy,
if (ret != 0)
goto out;
idx = s3c_freq->freq_table[i].index;
idx = s3c_freq->freq_table[i].driver_data;
if (idx == SOURCE_HCLK)
to_dvs = 1;
@ -312,7 +312,7 @@ static void __init s3c2416_cpufreq_cfg_regulator(struct s3c2416_data *s3c_freq)
if (freq->frequency == CPUFREQ_ENTRY_INVALID)
continue;
dvfs = &s3c2416_dvfs_table[freq->index];
dvfs = &s3c2416_dvfs_table[freq->driver_data];
found = 0;
/* Check only the min-voltage, more is always ok on S3C2416 */
@ -462,7 +462,7 @@ static int __init s3c2416_cpufreq_driver_init(struct cpufreq_policy *policy)
freq = s3c_freq->freq_table;
while (freq->frequency != CPUFREQ_TABLE_END) {
/* special handling for dvs mode */
if (freq->index == 0) {
if (freq->driver_data == 0) {
if (!s3c_freq->hclk) {
pr_debug("cpufreq: %dkHz unsupported as it would need unavailable dvs mode\n",
freq->frequency);

10
drivers/cpufreq/s3c64xx-cpufreq.c
View file

@ -87,7 +87,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
freqs.old = clk_get_rate(armclk) / 1000;
freqs.new = s3c64xx_freq_table[i].frequency;
freqs.flags = 0;
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].index];
dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].driver_data];
if (freqs.old == freqs.new)
return 0;
@ -104,7 +104,8 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
if (ret != 0) {
pr_err("Failed to set VDDARM for %dkHz: %d\n",
freqs.new, ret);
goto err;
freqs.new = freqs.old;
goto post_notify;
}
}
#endif
@ -113,10 +114,13 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
if (ret < 0) {
pr_err("Failed to set rate %dkHz: %d\n",
freqs.new, ret);
goto err;
freqs.new = freqs.old;
}
post_notify:
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
if (ret)
goto err;
#ifdef CONFIG_REGULATOR
if (vddarm && freqs.new < freqs.old) {

2
drivers/cpufreq/sc520_freq.c
View file

@ -71,7 +71,7 @@ static void sc520_freq_set_cpu_state(struct cpufreq_policy *policy,
local_irq_disable();
clockspeed_reg = *cpuctl & ~0x03;
*cpuctl = clockspeed_reg | sc520_freq_table[state].index;
*cpuctl = clockspeed_reg | sc520_freq_table[state].driver_data;
local_irq_enable();

12
drivers/cpufreq/sparc-us2e-cpufreq.c
View file

@ -308,17 +308,17 @@ static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
struct cpufreq_frequency_table *table =
&us2e_freq_table[cpu].table[0];
table[0].index = 0;
table[0].driver_data = 0;
table[0].frequency = clock_tick / 1;
table[1].index = 1;
table[1].driver_data = 1;
table[1].frequency = clock_tick / 2;
table[2].index = 2;
table[2].driver_data = 2;
table[2].frequency = clock_tick / 4;
table[2].index = 3;
table[2].driver_data = 3;
table[2].frequency = clock_tick / 6;
table[2].index = 4;
table[2].driver_data = 4;
table[2].frequency = clock_tick / 8;
table[2].index = 5;
table[2].driver_data = 5;
table[3].frequency = CPUFREQ_TABLE_END;
policy->cpuinfo.transition_latency = 0;

8
drivers/cpufreq/sparc-us3-cpufreq.c
View file

@ -169,13 +169,13 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
struct cpufreq_frequency_table *table =
&us3_freq_table[cpu].table[0];
table[0].index = 0;
table[0].driver_data = 0;
table[0].frequency = clock_tick / 1;
table[1].index = 1;
table[1].driver_data = 1;
table[1].frequency = clock_tick / 2;
table[2].index = 2;
table[2].driver_data = 2;
table[2].frequency = clock_tick / 32;
table[3].index = 0;
table[3].driver_data = 0;
table[3].frequency = CPUFREQ_TABLE_END;
policy->cpuinfo.transition_latency = 0;

4
drivers/cpufreq/spear-cpufreq.c
View file

@ -250,11 +250,11 @@ static int spear_cpufreq_driver_init(void)
}
for (i = 0; i < cnt; i++) {
freq_tbl[i].index = i;
freq_tbl[i].driver_data = i;
freq_tbl[i].frequency = be32_to_cpup(val++);
}
freq_tbl[i].index = i;
freq_tbl[i].driver_data = i;
freq_tbl[i].frequency = CPUFREQ_TABLE_END;
spear_cpufreq.freq_tbl = freq_tbl;

8
drivers/cpufreq/speedstep-centrino.c
View file

@ -79,11 +79,11 @@ static struct cpufreq_driver centrino_driver;
/* Computes the correct form for IA32_PERF_CTL MSR for a particular
frequency/voltage operating point; frequency in MHz, volts in mV.
This is stored as "index" in the structure. */
This is stored as "driver_data" in the structure. */
#define OP(mhz, mv) \
{ \
.frequency = (mhz) * 1000, \
.index = (((mhz)/100) << 8) | ((mv - 700) / 16) \
.driver_data = (((mhz)/100) << 8) | ((mv - 700) / 16) \
}
/*
@ -307,7 +307,7 @@ static unsigned extract_clock(unsigned msr, unsigned int cpu, int failsafe)
per_cpu(centrino_model, cpu)->op_points[i].frequency
!= CPUFREQ_TABLE_END;
i++) {
if (msr == per_cpu(centrino_model, cpu)->op_points[i].index)
if (msr == per_cpu(centrino_model, cpu)->op_points[i].driver_data)
return per_cpu(centrino_model, cpu)->
op_points[i].frequency;
}
@ -501,7 +501,7 @@ static int centrino_target (struct cpufreq_policy *policy,
break;
}
msr = per_cpu(centrino_model, cpu)->op_points[newstate].index;
msr = per_cpu(centrino_model, cpu)->op_points[newstate].driver_data;
if (first_cpu) {
rdmsr_on_cpu(good_cpu, MSR_IA32_PERF_CTL, &oldmsr, &h);

23
drivers/cpufreq/tegra-cpufreq.c
View file

@ -28,17 +28,16 @@
#include <linux/io.h>
#include <linux/suspend.h>
/* Frequency table index must be sequential starting at 0 */
static struct cpufreq_frequency_table freq_table[] = {
{ 0, 216000 },
{ 1, 312000 },
{ 2, 456000 },
{ 3, 608000 },
{ 4, 760000 },
{ 5, 816000 },
{ 6, 912000 },
{ 7, 1000000 },
{ 8, CPUFREQ_TABLE_END },
{ .frequency = 216000 },
{ .frequency = 312000 },
{ .frequency = 456000 },
{ .frequency = 608000 },
{ .frequency = 760000 },
{ .frequency = 816000 },
{ .frequency = 912000 },
{ .frequency = 1000000 },
{ .frequency = CPUFREQ_TABLE_END },
};
#define NUM_CPUS 2
@ -138,12 +137,12 @@ static int tegra_update_cpu_speed(struct cpufreq_policy *policy,
if (ret) {
pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n",
freqs.new);
return ret;
freqs.new = freqs.old;
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
return 0;
return ret;
}
static unsigned long tegra_cpu_highest_speed(void)

10
drivers/mfd/db8500-prcmu.c
View file

@ -1724,9 +1724,9 @@ static long round_clock_rate(u8 clock, unsigned long rate)
/* CPU FREQ table, may be changed due to if MAX_OPP is supported. */
static struct cpufreq_frequency_table db8500_cpufreq_table[] = {
{ .frequency = 200000, .index = ARM_EXTCLK,},
{ .frequency = 400000, .index = ARM_50_OPP,},
{ .frequency = 800000, .index = ARM_100_OPP,},
{ .frequency = 200000, .driver_data = ARM_EXTCLK,},
{ .frequency = 400000, .driver_data = ARM_50_OPP,},
{ .frequency = 800000, .driver_data = ARM_100_OPP,},
{ .frequency = CPUFREQ_TABLE_END,}, /* To be used for MAX_OPP. */
{ .frequency = CPUFREQ_TABLE_END,},
};
@ -1901,7 +1901,7 @@ static int set_armss_rate(unsigned long rate)
return -EINVAL;
/* Set the new arm opp. */
return db8500_prcmu_set_arm_opp(db8500_cpufreq_table[i].index);
return db8500_prcmu_set_arm_opp(db8500_cpufreq_table[i].driver_data);
}
static int set_plldsi_rate(unsigned long rate)
@ -3105,7 +3105,7 @@ static void db8500_prcmu_update_cpufreq(void)
{
if (prcmu_has_arm_maxopp()) {
db8500_cpufreq_table[3].frequency = 1000000;
db8500_cpufreq_table[3].index = ARM_MAX_OPP;
db8500_cpufreq_table[3].driver_data = ARM_MAX_OPP;
}
}

4
drivers/sh/clk/core.c
View file

@ -63,12 +63,12 @@ void clk_rate_table_build(struct clk *clk,
else
freq = clk->parent->rate * mult / div;
freq_table[i].index = i;
freq_table[i].driver_data = i;
freq_table[i].frequency = freq;
}
/* Termination entry */
freq_table[i].index = i;
freq_table[i].driver_data = i;
freq_table[i].frequency = CPUFREQ_TABLE_END;
}

50
include/linux/cpufreq.h
View file

@ -1,8 +1,8 @@
/*
* linux/include/linux/cpufreq.h
* linux/include/linux/cpufreq.h
*
* Copyright (C) 2001 Russell King
* (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2001 Russell King
* (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -26,7 +26,6 @@
/* Print length for names. Extra 1 space for accomodating '\n' in prints */
#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
/*********************************************************************
* CPUFREQ NOTIFIER INTERFACE *
*********************************************************************/
@ -71,6 +70,10 @@ struct cpufreq_governor;
/* /sys/devices/system/cpu/cpufreq: entry point for global variables */
extern struct kobject *cpufreq_global_kobject;
int cpufreq_get_global_kobject(void);
void cpufreq_put_global_kobject(void);
int cpufreq_sysfs_create_file(const struct attribute *attr);
void cpufreq_sysfs_remove_file(const struct attribute *attr);
#define CPUFREQ_ETERNAL (-1)
struct cpufreq_cpuinfo {
@ -107,6 +110,7 @@ struct cpufreq_policy {
unsigned int policy; /* see above */
struct cpufreq_governor *governor; /* see below */
void *governor_data;
bool governor_enabled; /* governor start/stop flag */
struct work_struct update; /* if update_policy() needs to be
* called, but you're in IRQ context */
@ -148,17 +152,18 @@ struct cpufreq_freqs {
u8 flags; /* flags of cpufreq_driver, see below. */
};
/**
* cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch safe)
* cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch
* safe)
* @old: old value
* @div: divisor
* @mult: multiplier
*
*
* new = old * mult / div
* new = old * mult / div
*/
static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mult)
static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
u_int mult)
{
#if BITS_PER_LONG == 32
@ -211,14 +216,12 @@ extern int __cpufreq_driver_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation);
extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy,
unsigned int cpu);
int cpufreq_register_governor(struct cpufreq_governor *governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
/*********************************************************************
* CPUFREQ DRIVER INTERFACE *
*********************************************************************/
@ -229,7 +232,7 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor);
struct freq_attr;
struct cpufreq_driver {
struct module *owner;
struct module *owner;
char name[CPUFREQ_NAME_LEN];
u8 flags;
/*
@ -277,11 +280,11 @@ struct cpufreq_driver {
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
void cpufreq_notify_transition(struct cpufreq_policy *policy,
struct cpufreq_freqs *freqs, unsigned int state);
static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max)
static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
unsigned int min, unsigned int max)
{
if (policy->min < min)
policy->min = min;
@ -337,12 +340,16 @@ const char *cpufreq_get_current_driver(void);
/*********************************************************************
* CPUFREQ 2.6. INTERFACE *
*********************************************************************/
u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
int cpufreq_update_policy(unsigned int cpu);
bool have_governor_per_policy(void);
struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
#ifdef CONFIG_CPU_FREQ
/* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
/*
* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it
*/
unsigned int cpufreq_get(unsigned int cpu);
#else
static inline unsigned int cpufreq_get(unsigned int cpu)
@ -351,7 +358,9 @@ static inline unsigned int cpufreq_get(unsigned int cpu)
}
#endif
/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
/*
* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it
*/
#ifdef CONFIG_CPU_FREQ
unsigned int cpufreq_quick_get(unsigned int cpu);
unsigned int cpufreq_quick_get_max(unsigned int cpu);
@ -366,16 +375,14 @@ static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
}
#endif
/*********************************************************************
* CPUFREQ DEFAULT GOVERNOR *
*********************************************************************/
/*
Performance governor is fallback governor if any other gov failed to
auto load due latency restrictions
*/
* Performance governor is fallback governor if any other gov failed to auto
* load due latency restrictions
*/
#ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE
extern struct cpufreq_governor cpufreq_gov_performance;
#endif
@ -395,7 +402,6 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_conservative)
#endif
/*********************************************************************
* FREQUENCY TABLE HELPERS *
*********************************************************************/
@ -404,7 +410,7 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
#define CPUFREQ_TABLE_END ~1
struct cpufreq_frequency_table {
unsigned int index; /* any */
unsigned int driver_data; /* driver specific data, not used by core */
unsigned int frequency; /* kHz - doesn't need to be in ascending
* order */
};