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thermal: use integers rather than strings for thermal values

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The thermal API currently uses strings to pass values to userspace. This
makes it difficult to use from within the kernel. Change the interface
to use integers and fix up the consumers.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Matthew Garrett
2008-11-27 17:48:13 +00:00
committed by Len Brown
parent d2f8d7ee1a
commit 6503e5df08
7 changed files with 198 additions and 96 deletions
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20
drivers/acpi/processor_thermal.c
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@ -373,7 +373,8 @@ static int acpi_processor_max_state(struct acpi_processor *pr)
return max_state;
}
static int
processor_get_max_state(struct thermal_cooling_device *cdev, char *buf)
processor_get_max_state(struct thermal_cooling_device *cdev,
unsigned long *state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);
@ -381,28 +382,29 @@ processor_get_max_state(struct thermal_cooling_device *cdev, char *buf)
if (!device || !pr)
return -EINVAL;
return sprintf(buf, "%d\n", acpi_processor_max_state(pr));
*state = acpi_processor_max_state(pr);
return 0;
}
static int
processor_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
processor_get_cur_state(struct thermal_cooling_device *cdev,
unsigned long *cur_state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);
int cur_state;
if (!device || !pr)
return -EINVAL;
cur_state = cpufreq_get_cur_state(pr->id);
*cur_state = cpufreq_get_cur_state(pr->id);
if (pr->flags.throttling)
cur_state += pr->throttling.state;
return sprintf(buf, "%d\n", cur_state);
*cur_state += pr->throttling.state;
return 0;
}
static int
processor_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
processor_set_cur_state(struct thermal_cooling_device *cdev,
unsigned long state)
{
struct acpi_device *device = cdev->devdata;
struct acpi_processor *pr = acpi_driver_data(device);