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drm/radeon/dpm: add infrastructure to properly handle bapm

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bapm is a pm feature for sharing the power budget between
the GPU and the CPU on APUs.  It needs to be enabled or
disabled in certain circumstances.  For now, disable it
when on battery and enable it when on AC power.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2013-09-09 19:11:52 -04:00
parent 64d03221ee
commit 1c71bda097
2 changed files with 12 additions and 1 deletions
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11
drivers/gpu/drm/radeon/radeon_pm.c
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@@ -67,7 +67,16 @@ int radeon_pm_get_type_index(struct radeon_device *rdev,
void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
{
if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
mutex_lock(&rdev->pm.mutex);
if (power_supply_is_system_supplied() > 0)
rdev->pm.dpm.ac_power = true;
else
rdev->pm.dpm.ac_power = false;
if (rdev->asic->dpm.enable_bapm)
radeon_dpm_enable_bapm(rdev, rdev->pm.dpm.ac_power);
mutex_unlock(&rdev->pm.mutex);
} else if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
if (rdev->pm.profile == PM_PROFILE_AUTO) {
mutex_lock(&rdev->pm.mutex);
radeon_pm_update_profile(rdev);