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path: root/drivers/cpufreq/e_powersaver.c
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Diffstat (limited to 'drivers/cpufreq/e_powersaver.c')
-rw-r--r--drivers/cpufreq/e_powersaver.c76
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
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 19:21:42 +0000