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drm/radeon/kms/pm: add support for SetVoltage cmd table (V2) 

- This enables voltage adjustment on r6xx+ and certain
r5xx asics.
- Voltage drop support is already available for most
r1xx-r5xx asics.

V2: endian fix for voltage table.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-05-27 19:25:54 -04:00 committed by Dave Airlie
parent cb5fcbd540
commit 7ac9aa5a1f
4 changed files with 45 additions and 1 deletions
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6
drivers/gpu/drm/radeon/r600.c
View File

@ -475,6 +475,12 @@ void r600_pm_init_profile(struct radeon_device *rdev)
void r600_pm_misc(struct radeon_device *rdev)
{
int requested_index = rdev->pm.requested_power_state_index;
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);
}

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

@ -176,6 +176,7 @@ void radeon_pm_suspend(struct radeon_device *rdev);
void radeon_pm_resume(struct radeon_device *rdev);
void radeon_combios_get_power_modes(struct radeon_device *rdev);
void radeon_atombios_get_power_modes(struct radeon_device *rdev);
void radeon_atom_set_voltage(struct radeon_device *rdev, u16 level);
/*
* Fences.

36
drivers/gpu/drm/radeon/radeon_atombios.c
View File

@ -1998,6 +1998,42 @@ void radeon_atom_set_memory_clock(struct radeon_device *rdev,
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
union set_voltage {
struct _SET_VOLTAGE_PS_ALLOCATION alloc;
struct _SET_VOLTAGE_PARAMETERS v1;
struct _SET_VOLTAGE_PARAMETERS_V2 v2;
};
void radeon_atom_set_voltage(struct radeon_device *rdev, u16 level)
{
union set_voltage args;
int index = GetIndexIntoMasterTable(COMMAND, SetVoltage);
u8 frev, crev, volt_index = level;
if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
return;
switch (crev) {
case 1:
args.v1.ucVoltageType = SET_VOLTAGE_TYPE_ASIC_VDDC;
args.v1.ucVoltageMode = SET_ASIC_VOLTAGE_MODE_ALL_SOURCE;
args.v1.ucVoltageIndex = volt_index;
break;
case 2:
args.v2.ucVoltageType = SET_VOLTAGE_TYPE_ASIC_VDDC;
args.v2.ucVoltageMode = SET_ASIC_VOLTAGE_MODE_SET_VOLTAGE;
args.v2.usVoltageLevel = cpu_to_le16(level);
break;
default:
DRM_ERROR("Unknown table version %d, %d\n", frev, crev);
return;
}
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;

3
drivers/gpu/drm/radeon/rs600.c
View File

@ -74,7 +74,8 @@ void rs600_pm_misc(struct radeon_device *rdev)
if (voltage->delay)
udelay(voltage->delay);
}
}
} else if (voltage->type == VOLTAGE_VDDC)
radeon_atom_set_voltage(rdev, voltage->vddc_id);
dyn_pwrmgt_sclk_length = RREG32_PLL(DYN_PWRMGT_SCLK_LENGTH);
dyn_pwrmgt_sclk_length &= ~REDUCED_POWER_SCLK_HILEN(0xf);