diff options
56 files changed, 867 insertions, 514 deletions
diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt index a3585ea..19fa98e 100644 --- a/Documentation/cpu-freq/cpu-drivers.txt +++ b/Documentation/cpu-freq/cpu-drivers.txt @@ -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. diff --git a/MAINTAINERS b/MAINTAINERS index 5be702c..041df42 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2215,7 +2215,8 @@ 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 diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c index 4d69338..a0d4f60 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -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; diff --git a/arch/arm/mach-s3c24xx/cpufreq-utils.c b/arch/arm/mach-s3c24xx/cpufreq-utils.c index ddd8280..2a0aa56 100644 --- a/arch/arm/mach-s3c24xx/cpufreq-utils.c +++ b/arch/arm/mach-s3c24xx/cpufreq-utils.c @@ -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); } diff --git a/arch/arm/mach-s3c24xx/cpufreq.c b/arch/arm/mach-s3c24xx/cpufreq.c index 3c0e78e..3513e74 100644 --- a/arch/arm/mach-s3c24xx/cpufreq.c +++ b/arch/arm/mach-s3c24xx/cpufreq.c @@ -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; diff --git a/arch/arm/mach-s3c24xx/pll-s3c2410.c b/arch/arm/mach-s3c24xx/pll-s3c2410.c index dcf3420..5e37d36 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2410.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2410.c @@ -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) diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c index 6737817..a19460e 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c @@ -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) diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c b/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c index debfa10..1191b29 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c @@ -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, diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c index 7e10593..5390c6b 100644 --- a/arch/arm/mach-shmobile/clock-sh7372.c +++ b/arch/arm/mach-shmobile/clock-sh7372.c @@ -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) diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h index 95509d8..a8a760d 100644 --- a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h +++ b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h @@ -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; } diff --git a/arch/mips/loongson/lemote-2f/clock.c b/arch/mips/loongson/lemote-2f/clock.c index bc739d4..4dc2f5f 100644 --- a/arch/mips/loongson/lemote-2f/clock.c +++ b/arch/mips/loongson/lemote-2f/clock.c @@ -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; diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index b62aab3..e17cdfc 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -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" diff --git a/arch/powerpc/platforms/pasemi/Makefile b/arch/powerpc/platforms/pasemi/Makefile index ce6d789..8e8d4ca 100644 --- a/arch/powerpc/platforms/pasemi/Makefile +++ b/arch/powerpc/platforms/pasemi/Makefile @@ -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 diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile index ea47df6..52c6ce1 100644 --- a/arch/powerpc/platforms/powermac/Makefile +++ b/arch/powerpc/platforms/powermac/Makefile @@ -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 diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index f0077cb..c8ec186 100644 --- a/drivers/base/power/opp.c +++ b/drivers/base/power/opp.c @@ -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]; diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 5085427..fee9f48 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -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. @@ -88,6 +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. @@ -151,6 +153,7 @@ 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. diff --git a/drivers/cpufreq/Kconfig.powerpc b/drivers/cpufreq/Kconfig.powerpc index 68c1abc..25ca9db 100644 --- a/drivers/cpufreq/Kconfig.powerpc +++ b/drivers/cpufreq/Kconfig.powerpc @@ -24,3 +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. diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index 9c873e7..0c8d0c6 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -79,6 +79,10 @@ 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 diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index edc089e..2c5906d 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -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); diff --git a/drivers/cpufreq/blackfin-cpufreq.c b/drivers/cpufreq/blackfin-cpufreq.c index 995511e80..9cdbbd2 100644 --- a/drivers/cpufreq/blackfin-cpufreq.c +++ b/drivers/cpufreq/blackfin-cpufreq.c @@ -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, }, }; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2d53f47..d976e22 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -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 @@ out: 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 @@ err_null_driver: } 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); diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index dc9b72e..a849b2d 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -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; diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index e16a961..6663ec3 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -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); diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c index ceee068..9fef7d6 100644 --- a/drivers/cpufreq/cpufreq_performance.c +++ b/drivers/cpufreq/cpufreq_performance.c @@ -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"); diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index 2d948a1..32109a1 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -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"); diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index fb65dec..6d35caa 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -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 ", diff --git a/drivers/cpufreq/cpufreq_userspace.c b/drivers/cpufreq/cpufreq_userspace.c index bbeb9c0..0307809 100644 --- a/drivers/cpufreq/cpufreq_userspace.c +++ b/drivers/cpufreq/cpufreq_userspace.c @@ -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); - mutex_lock(&userspace_mutex); - - if (cpus_using_userspace_governor == 0) { - cpufreq_register_notifier( - &userspace_cpufreq_notifier_block, - CPUFREQ_TRANSITION_NOTIFIER); - } - cpus_using_userspace_governor++; + pr_debug("started managing cpu %u\n", cpu); + mutex_lock(&userspace_mutex); 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); - } + pr_debug("managing cpu %u stopped\n", cpu); + mutex_lock(&userspace_mutex); 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_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'"); diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 37380fb..a60efae 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -161,6 +161,9 @@ postchange: 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 = ¢aur->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; diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c index d7a7966..f0d8741 100644 --- a/drivers/cpufreq/freq_table.c +++ b/drivers/cpufreq/freq_table.c @@ -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; } diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c index c0075db..573c14e 100644 --- a/drivers/cpufreq/ia64-acpi-cpufreq.c +++ b/drivers/cpufreq/ia64-acpi-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/kirkwood-cpufreq.c b/drivers/cpufreq/kirkwood-cpufreq.c index b2644af..c233ea6 100644 --- a/drivers/cpufreq/kirkwood-cpufreq.c +++ b/drivers/cpufreq/kirkwood-cpufreq.c @@ -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); diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index b448638..b6a0a7a 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -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; diff --git a/drivers/cpufreq/loongson2_cpufreq.c b/drivers/cpufreq/loongson2_cpufreq.c index d539127..bb838b9 100644 --- a/drivers/cpufreq/loongson2_cpufreq.c +++ b/drivers/cpufreq/loongson2_cpufreq.c @@ -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; diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 421ef37..9ee7817 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -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); diff --git a/arch/powerpc/platforms/pasemi/cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c index be1e795..b704da4 100644 --- a/arch/powerpc/platforms/pasemi/cpufreq.c +++ b/drivers/cpufreq/pasemi-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c index 0de0008..1581fcc 100644 --- a/drivers/cpufreq/pcc-cpufreq.c +++ b/drivers/cpufreq/pcc-cpufreq.c @@ -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; diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/drivers/cpufreq/pmac32-cpufreq.c index 3104fad..3104fad 100644 --- a/arch/powerpc/platforms/powermac/cpufreq_32.c +++ b/drivers/cpufreq/pmac32-cpufreq.c diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/drivers/cpufreq/pmac64-cpufreq.c index 7ba4234..7ba4234 100644 --- a/arch/powerpc/platforms/powermac/cpufreq_64.c +++ b/drivers/cpufreq/pmac64-cpufreq.c diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index ea0222a..ea8e103 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -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 diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index 53888da..b9f80b7 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -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); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index b828efe..78f018f 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -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; diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c new file mode 100644 index 0000000..3cae452 --- /dev/null +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -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"); diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c index e577a1d..5936f8d 100644 --- a/drivers/cpufreq/ppc_cbe_cpufreq.c +++ b/drivers/cpufreq/ppc_cbe_cpufreq.c @@ -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); diff --git a/drivers/cpufreq/pxa2xx-cpufreq.c b/drivers/cpufreq/pxa2xx-cpufreq.c index 9e5bc8e..fb3981a 100644 --- a/drivers/cpufreq/pxa2xx-cpufreq.c +++ b/drivers/cpufreq/pxa2xx-cpufreq.c @@ -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; /* diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c index 15d60f8..9c92ef0 100644 --- a/drivers/cpufreq/pxa3xx-cpufreq.c +++ b/drivers/cpufreq/pxa3xx-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/s3c2416-cpufreq.c b/drivers/cpufreq/s3c2416-cpufreq.c index 4f1881e..69f2e55 100644 --- a/drivers/cpufreq/s3c2416-cpufreq.c +++ b/drivers/cpufreq/s3c2416-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c index 27cacb5..306d395 100644 --- a/drivers/cpufreq/s3c64xx-cpufreq.c +++ b/drivers/cpufreq/s3c64xx-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index f740b13..77a2109 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -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(); diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c index 306ae46..93061a40 100644 --- a/drivers/cpufreq/sparc-us2e-cpufreq.c +++ b/drivers/cpufreq/sparc-us2e-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c index c71ee14..880ee29 100644 --- a/drivers/cpufreq/sparc-us3-cpufreq.c +++ b/drivers/cpufreq/sparc-us3-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 156829f..c3efa7f 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -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; diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 618e6f4..0915e71 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -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); diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index c74c0e1..81561be 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -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 diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 66f8097..ed79d7b 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -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; } } diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index 7715de2..7472785 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -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; } diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 037d36a..3c7ee2f 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -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 */ }; |
