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drm/radeon/atom: add new voltage fetch function for hawaii 

Some hawaii boards use a different method for fetching the
voltage information from the vbios.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2014-07-31 17:57:42 -04:00
parent 72a9987edc
commit e9f274b2a1
2 changed files with 38 additions and 0 deletions
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3
drivers/gpu/drm/radeon/radeon.h
View File

@ -304,6 +304,9 @@ int radeon_atom_get_leakage_vddc_based_on_leakage_params(struct radeon_device *r
u16 *vddc, u16 *vddci,
u16 virtual_voltage_id,
u16 vbios_voltage_id);
int radeon_atom_get_voltage_evv(struct radeon_device *rdev,
u16 virtual_voltage_id,
u16 *voltage);
int radeon_atom_round_to_true_voltage(struct radeon_device *rdev,
u8 voltage_type,
u16 nominal_voltage,

35
drivers/gpu/drm/radeon/radeon_atombios.c
View File

@ -3236,6 +3236,41 @@ int radeon_atom_get_leakage_vddc_based_on_leakage_params(struct radeon_device *r
return 0;
}
union get_voltage_info {
struct _GET_VOLTAGE_INFO_INPUT_PARAMETER_V1_2 in;
struct _GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_2 evv_out;
};
int radeon_atom_get_voltage_evv(struct radeon_device *rdev,
u16 virtual_voltage_id,
u16 *voltage)
{
int index = GetIndexIntoMasterTable(COMMAND, GetVoltageInfo);
u32 entry_id;
u32 count = rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.count;
union get_voltage_info args;
for (entry_id = 0; entry_id < count; entry_id++) {
if (rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries[entry_id].v ==
virtual_voltage_id)
break;
}
if (entry_id >= count)
return -EINVAL;
args.in.ucVoltageType = VOLTAGE_TYPE_VDDC;
args.in.ucVoltageMode = ATOM_GET_VOLTAGE_EVV_VOLTAGE;
args.in.ulSCLKFreq =
cpu_to_le32(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries[entry_id].clk);
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
*voltage = le16_to_cpu(args.evv_out.usVoltageLevel);
return 0;
}
int radeon_atom_get_voltage_gpio_settings(struct radeon_device *rdev,
u16 voltage_level, u8 voltage_type,
u32 *gpio_value, u32 *gpio_mask)