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drm/radeon/kms/pm: track current voltage (v2)

Browse source 
track the current voltage level and avoid setting it
if the requested voltage is already set.

v2: check voltage type before checking current voltage

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-06-07 18:15:18 -04:00 committed by Dave Airlie
parent aa1df0f229
commit 4d60173fc1
6 changed files with 22 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpu/drm/radeon/evergreen.c
View file

@ -45,8 +45,12 @@ void evergreen_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
radeon_atom_set_voltage(rdev, voltage->voltage);
if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
if (voltage->voltage != rdev->pm.current_vddc) {
radeon_atom_set_voltage(rdev, voltage->voltage);
rdev->pm.current_vddc = voltage->voltage;
}
}
}
void evergreen_pm_prepare(struct radeon_device *rdev)

9
drivers/gpu/drm/radeon/r600.c
View file

@ -561,9 +561,12 @@ void r600_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
radeon_atom_set_voltage(rdev, voltage->voltage);
if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
if (voltage->voltage != rdev->pm.current_vddc) {
radeon_atom_set_voltage(rdev, voltage->voltage);
rdev->pm.current_vddc = voltage->voltage;
}
}
}
bool r600_gui_idle(struct radeon_device *rdev)

1
drivers/gpu/drm/radeon/radeon.h
View file

@ -748,6 +748,7 @@ struct radeon_pm {
int default_power_state_index;
u32 current_sclk;
u32 current_mclk;
u32 current_vddc;
struct radeon_i2c_chan *i2c_bus;
/* selected pm method */
enum radeon_pm_method pm_method;

1
drivers/gpu/drm/radeon/radeon_atombios.c
View file

@ -1966,6 +1966,7 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
rdev->pm.current_clock_mode_index = 0;
rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
}
void radeon_atom_set_clock_gating(struct radeon_device *rdev, int enable)

1
drivers/gpu/drm/radeon/radeon_pm.c
View file

@ -387,6 +387,7 @@ void radeon_pm_resume(struct radeon_device *rdev)
rdev->pm.current_clock_mode_index = 0;
rdev->pm.current_sclk = rdev->clock.default_sclk;
rdev->pm.current_mclk = rdev->clock.default_mclk;
rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
mutex_unlock(&rdev->pm.mutex);
radeon_pm_compute_clocks(rdev);
}

9
drivers/gpu/drm/radeon/rv770.c
View file

@ -48,8 +48,13 @@ void rv770_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
radeon_atom_set_voltage(rdev, voltage->voltage);
if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
if (voltage->voltage != rdev->pm.current_vddc) {
radeon_atom_set_voltage(rdev, voltage->voltage);
rdev->pm.current_vddc = voltage->voltage;
}
}
}
/*