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drm/radeon: rework SI dpm thermal setup 

In preparation for fan control.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2014-09-08 03:35:17 -04:00
parent 9b92d1ec62
commit 2271e2e2a2
1 changed files with 48 additions and 17 deletions
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65
drivers/gpu/drm/radeon/si_dpm.c
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@ -5817,8 +5817,33 @@ void si_dpm_setup_asic(struct radeon_device *rdev)
si_enable_acpi_power_management(rdev);
}
static int si_set_thermal_temperature_range(struct radeon_device *rdev,
int min_temp, int max_temp)
static int si_thermal_enable_alert(struct radeon_device *rdev,
bool enable)
{
u32 thermal_int = RREG32(CG_THERMAL_INT);
if (enable) {
PPSMC_Result result;
thermal_int |= THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW;
rdev->irq.dpm_thermal = true;
result = si_send_msg_to_smc(rdev, PPSMC_MSG_EnableThermalInterrupt);
if (result != PPSMC_Result_OK) {
DRM_DEBUG_KMS("Could not enable thermal interrupts.\n");
return -EINVAL;
}
} else {
thermal_int &= ~(THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW);
rdev->irq.dpm_thermal = false;
}
WREG32(CG_THERMAL_INT, thermal_int);
return 0;
}
static int si_thermal_set_temperature_range(struct radeon_device *rdev,
int min_temp, int max_temp)
{
int low_temp = 0 * 1000;
int high_temp = 255 * 1000;
@ -5959,26 +5984,32 @@ int si_dpm_enable(struct radeon_device *rdev)
return 0;
}
static int si_set_temperature_range(struct radeon_device *rdev)
{
int ret;
ret = si_thermal_enable_alert(rdev, false);
if (ret)
return ret;
ret = si_thermal_set_temperature_range(rdev, R600_TEMP_RANGE_MIN, R600_TEMP_RANGE_MAX);
if (ret)
return ret;
ret = si_thermal_enable_alert(rdev, true);
if (ret)
return ret;
return ret;
}
int si_dpm_late_enable(struct radeon_device *rdev)
{
int ret;
if (rdev->irq.installed &&
r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) {
PPSMC_Result result;
ret = si_set_temperature_range(rdev);
if (ret)
return ret;
ret = si_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, R600_TEMP_RANGE_MAX);
if (ret)
return ret;
rdev->irq.dpm_thermal = true;
radeon_irq_set(rdev);
result = si_send_msg_to_smc(rdev, PPSMC_MSG_EnableThermalInterrupt);
if (result != PPSMC_Result_OK)
DRM_DEBUG_KMS("Could not enable thermal interrupts.\n");
}
return 0;
return ret;
}
void si_dpm_disable(struct radeon_device *rdev)