@@ -17,6 +17,7 @@ struct nvkm_volt {
u32 min_uv;
};
+int nvkm_volt_map_min(struct nvkm_volt *volt, u8 id);
int nvkm_volt_get(struct nvkm_volt *);
int nvkm_volt_set_id(struct nvkm_volt *, u8 id, int condition);
@@ -65,6 +65,28 @@ nvkm_volt_set(struct nvkm_volt *volt, u32 uv)
return ret;
}
+int
+nvkm_volt_map_min(struct nvkm_volt *volt, u8 id)
+{
+ struct nvkm_bios *bios = volt->subdev.device->bios;
+ struct nvbios_vmap_entry info;
+ u8 ver, len;
+ u16 vmap;
+
+ vmap = nvbios_vmap_entry_parse(bios, id, &ver, &len, &info);
+ if (vmap) {
+ if (info.link != 0xff) {
+ int ret = nvkm_volt_map_min(volt, info.link);
+ if (ret < 0)
+ return ret;
+ info.min += ret;
+ }
+ return info.min;
+ }
+
+ return id ? id * 10000 : -ENODEV;
+}
+
static int
nvkm_volt_map(struct nvkm_volt *volt, u8 id)
{