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1/*2 * Copyright 2016 Karol Herbst3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Karol Herbst23 */24#include "priv.h"25 26#include <subdev/fuse.h>27 28static int29gf100_volt_speedo_read(struct nvkm_volt *volt)30{31 struct nvkm_device *device = volt->subdev.device;32 struct nvkm_fuse *fuse = device->fuse;33 34 if (!fuse)35 return -EINVAL;36 37 return nvkm_fuse_read(fuse, 0x1cc);38}39 40int41gf100_volt_oneinit(struct nvkm_volt *volt)42{43 struct nvkm_subdev *subdev = &volt->subdev;44 if (volt->speedo <= 0)45 nvkm_error(subdev, "couldn't find speedo value, volting not "46 "possible\n");47 return 0;48}49 50static const struct nvkm_volt_func51gf100_volt = {52 .oneinit = gf100_volt_oneinit,53 .vid_get = nvkm_voltgpio_get,54 .vid_set = nvkm_voltgpio_set,55 .speedo_read = gf100_volt_speedo_read,56};57 58int59gf100_volt_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,60 struct nvkm_volt **pvolt)61{62 struct nvkm_volt *volt;63 int ret;64 65 ret = nvkm_volt_new_(&gf100_volt, device, type, inst, &volt);66 *pvolt = volt;67 if (ret)68 return ret;69 70 return nvkm_voltgpio_init(volt);71}72