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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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2
drivers/gpu/drm/radeon/radeon.h
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@ -1778,6 +1778,7 @@ struct radeon_asic {
int (*force_performance_level)(struct radeon_device *rdev, enum radeon_dpm_forced_level level);
bool (*vblank_too_short)(struct radeon_device *rdev);
void (*powergate_uvd)(struct radeon_device *rdev, bool gate);
void (*enable_bapm)(struct radeon_device *rdev, bool enable);
} dpm;
/* pageflipping */
struct {
@ -2647,6 +2648,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v);
#define radeon_dpm_force_performance_level(rdev, l) rdev->asic->dpm.force_performance_level((rdev), (l))
#define radeon_dpm_vblank_too_short(rdev) rdev->asic->dpm.vblank_too_short((rdev))
#define radeon_dpm_powergate_uvd(rdev, g) rdev->asic->dpm.powergate_uvd((rdev), (g))
#define radeon_dpm_enable_bapm(rdev, e) rdev->asic->dpm.enable_bapm((rdev), (e))
/* Common functions */
/* AGP */

11
drivers/gpu/drm/radeon/radeon_pm.c
View file

@ -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);