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>
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 24ea683..24ebb4e 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1998,6 +1998,42 @@
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;