diff options
Diffstat (limited to 'drivers/cpufreq/e_powersaver.c')
| -rw-r--r-- | drivers/cpufreq/e_powersaver.c | 76 |
1 files changed, 34 insertions, 42 deletions
diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 4085244c8a67..cdf097b29862 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -6,6 +6,8 @@ * BIG FAT DISCLAIMER: Work in progress code. Possibly *dangerous* */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -20,7 +22,7 @@ #include <asm/msr.h> #include <asm/tsc.h> -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) #include <linux/acpi.h> #include <acpi/processor.h> #endif @@ -33,7 +35,7 @@ struct eps_cpu_data { u32 fsb; -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) u32 bios_limit; #endif struct cpufreq_frequency_table freq_table[]; @@ -46,7 +48,7 @@ static int freq_failsafe_off; static int voltage_failsafe_off; static int set_max_voltage; -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) static int ignore_acpi_limit; static struct acpi_processor_performance *eps_acpi_cpu_perf; @@ -141,11 +143,9 @@ static int eps_set_state(struct eps_cpu_data *centaur, /* Print voltage and multiplier */ rdmsr(MSR_IA32_PERF_STATUS, lo, hi); current_voltage = lo & 0xff; - printk(KERN_INFO "eps: Current voltage = %dmV\n", - current_voltage * 16 + 700); + pr_info("Current voltage = %dmV\n", current_voltage * 16 + 700); current_multiplier = (lo >> 8) & 0xff; - printk(KERN_INFO "eps: Current multiplier = %d\n", - current_multiplier); + pr_info("Current multiplier = %d\n", current_multiplier); } #endif return 0; @@ -166,7 +166,7 @@ static int eps_target(struct cpufreq_policy *policy, unsigned int index) dest_state = centaur->freq_table[index].driver_data & 0xffff; ret = eps_set_state(centaur, policy, dest_state); if (ret) - printk(KERN_ERR "eps: Timeout!\n"); + pr_err("Timeout!\n"); return ret; } @@ -186,7 +186,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy) int k, step, voltage; int ret; int states; -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) unsigned int limit; #endif @@ -194,36 +194,36 @@ static int eps_cpu_init(struct cpufreq_policy *policy) return -ENODEV; /* Check brand */ - printk(KERN_INFO "eps: Detected VIA "); + pr_info("Detected VIA "); switch (c->x86_model) { case 10: rdmsr(0x1153, lo, hi); brand = (((lo >> 2) ^ lo) >> 18) & 3; - printk(KERN_CONT "Model A "); + pr_cont("Model A "); break; case 13: rdmsr(0x1154, lo, hi); brand = (((lo >> 4) ^ (lo >> 2))) & 0x000000ff; - printk(KERN_CONT "Model D "); + pr_cont("Model D "); break; } switch (brand) { case EPS_BRAND_C7M: - printk(KERN_CONT "C7-M\n"); + pr_cont("C7-M\n"); break; case EPS_BRAND_C7: - printk(KERN_CONT "C7\n"); + pr_cont("C7\n"); break; case EPS_BRAND_EDEN: - printk(KERN_CONT "Eden\n"); + pr_cont("Eden\n"); break; case EPS_BRAND_C7D: - printk(KERN_CONT "C7-D\n"); + pr_cont("C7-D\n"); break; case EPS_BRAND_C3: - printk(KERN_CONT "C3\n"); + pr_cont("C3\n"); return -ENODEV; break; } @@ -235,7 +235,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy) /* Can be locked at 0 */ rdmsrl(MSR_IA32_MISC_ENABLE, val); if (!(val & MSR_IA32_MISC_ENABLE_ENHANCED_SPEEDSTEP)) { - printk(KERN_INFO "eps: Can't enable Enhanced PowerSaver\n"); + pr_info("Can't enable Enhanced PowerSaver\n"); return -ENODEV; } } @@ -243,22 +243,19 @@ static int eps_cpu_init(struct cpufreq_policy *policy) /* Print voltage and multiplier */ rdmsr(MSR_IA32_PERF_STATUS, lo, hi); current_voltage = lo & 0xff; - printk(KERN_INFO "eps: Current voltage = %dmV\n", - current_voltage * 16 + 700); + pr_info("Current voltage = %dmV\n", current_voltage * 16 + 700); current_multiplier = (lo >> 8) & 0xff; - printk(KERN_INFO "eps: Current multiplier = %d\n", current_multiplier); + pr_info("Current multiplier = %d\n", current_multiplier); /* Print limits */ max_voltage = hi & 0xff; - printk(KERN_INFO "eps: Highest voltage = %dmV\n", - max_voltage * 16 + 700); + pr_info("Highest voltage = %dmV\n", max_voltage * 16 + 700); max_multiplier = (hi >> 8) & 0xff; - printk(KERN_INFO "eps: Highest multiplier = %d\n", max_multiplier); + pr_info("Highest multiplier = %d\n", max_multiplier); min_voltage = (hi >> 16) & 0xff; - printk(KERN_INFO "eps: Lowest voltage = %dmV\n", - min_voltage * 16 + 700); + pr_info("Lowest voltage = %dmV\n", min_voltage * 16 + 700); min_multiplier = (hi >> 24) & 0xff; - printk(KERN_INFO "eps: Lowest multiplier = %d\n", min_multiplier); + pr_info("Lowest multiplier = %d\n", min_multiplier); /* Sanity checks */ if (current_multiplier == 0 || max_multiplier == 0 @@ -276,34 +273,30 @@ static int eps_cpu_init(struct cpufreq_policy *policy) /* Check for systems using underclocked CPU */ if (!freq_failsafe_off && max_multiplier != current_multiplier) { - printk(KERN_INFO "eps: Your processor is running at different " - "frequency then its maximum. Aborting.\n"); - printk(KERN_INFO "eps: You can use freq_failsafe_off option " - "to disable this check.\n"); + pr_info("Your processor is running at different frequency then its maximum. Aborting.\n"); + pr_info("You can use freq_failsafe_off option to disable this check.\n"); return -EINVAL; } if (!voltage_failsafe_off && max_voltage != current_voltage) { - printk(KERN_INFO "eps: Your processor is running at different " - "voltage then its maximum. Aborting.\n"); - printk(KERN_INFO "eps: You can use voltage_failsafe_off " - "option to disable this check.\n"); + pr_info("Your processor is running at different voltage then its maximum. Aborting.\n"); + pr_info("You can use voltage_failsafe_off option to disable this check.\n"); return -EINVAL; } /* Calc FSB speed */ fsb = cpu_khz / current_multiplier; -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) /* Check for ACPI processor speed limit */ if (!ignore_acpi_limit && !eps_acpi_init()) { if (!acpi_processor_get_bios_limit(policy->cpu, &limit)) { - printk(KERN_INFO "eps: ACPI limit %u.%uGHz\n", + pr_info("ACPI limit %u.%uGHz\n", limit/1000000, (limit%1000000)/10000); eps_acpi_exit(policy); /* Check if max_multiplier is in BIOS limits */ if (limit && max_multiplier * fsb > limit) { - printk(KERN_INFO "eps: Aborting.\n"); + pr_info("Aborting\n"); return -EINVAL; } } @@ -319,8 +312,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy) v = (set_max_voltage - 700) / 16; /* Check if voltage is within limits */ if (v >= min_voltage && v <= max_voltage) { - printk(KERN_INFO "eps: Setting %dmV as maximum.\n", - v * 16 + 700); + pr_info("Setting %dmV as maximum\n", v * 16 + 700); max_voltage = v; } } @@ -341,7 +333,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy) /* Copy basic values */ centaur->fsb = fsb; -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) centaur->bios_limit = limit; #endif @@ -426,7 +418,7 @@ module_param(freq_failsafe_off, int, 0644); MODULE_PARM_DESC(freq_failsafe_off, "Disable current vs max frequency check"); module_param(voltage_failsafe_off, int, 0644); MODULE_PARM_DESC(voltage_failsafe_off, "Disable current vs max voltage check"); -#if defined CONFIG_ACPI_PROCESSOR || defined CONFIG_ACPI_PROCESSOR_MODULE +#if IS_ENABLED(CONFIG_ACPI_PROCESSOR) module_param(ignore_acpi_limit, int, 0644); MODULE_PARM_DESC(ignore_acpi_limit, "Don't check ACPI's processor speed limit"); #endif |