171757abfSAlexandre Courbot /*
271757abfSAlexandre Courbot * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
371757abfSAlexandre Courbot *
471757abfSAlexandre Courbot * Permission is hereby granted, free of charge, to any person obtaining a
571757abfSAlexandre Courbot * copy of this software and associated documentation files (the "Software"),
671757abfSAlexandre Courbot * to deal in the Software without restriction, including without limitation
771757abfSAlexandre Courbot * the rights to use, copy, modify, merge, publish, distribute, sublicense,
871757abfSAlexandre Courbot * and/or sell copies of the Software, and to permit persons to whom the
971757abfSAlexandre Courbot * Software is furnished to do so, subject to the following conditions:
1071757abfSAlexandre Courbot *
1171757abfSAlexandre Courbot * The above copyright notice and this permission notice shall be included in
1271757abfSAlexandre Courbot * all copies or substantial portions of the Software.
1371757abfSAlexandre Courbot *
1471757abfSAlexandre Courbot * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
1571757abfSAlexandre Courbot * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
1671757abfSAlexandre Courbot * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
1771757abfSAlexandre Courbot * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
1871757abfSAlexandre Courbot * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
1971757abfSAlexandre Courbot * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
2071757abfSAlexandre Courbot * DEALINGS IN THE SOFTWARE.
2171757abfSAlexandre Courbot */
2271757abfSAlexandre Courbot
2371757abfSAlexandre Courbot #include "priv.h"
2471757abfSAlexandre Courbot #include "gk20a.h"
2571757abfSAlexandre Courbot
2671757abfSAlexandre Courbot #include <core/tegra.h>
2771757abfSAlexandre Courbot
28f3a8b664SBen Skeggs static const struct cvb_coef gm20b_cvb_coef[] = {
2971757abfSAlexandre Courbot /* KHz, c0, c1, c2 */
3071757abfSAlexandre Courbot /* 76800 */ { 1786666, -85625, 1632 },
3171757abfSAlexandre Courbot /* 153600 */ { 1846729, -87525, 1632 },
3271757abfSAlexandre Courbot /* 230400 */ { 1910480, -89425, 1632 },
3371757abfSAlexandre Courbot /* 307200 */ { 1977920, -91325, 1632 },
3471757abfSAlexandre Courbot /* 384000 */ { 2049049, -93215, 1632 },
3571757abfSAlexandre Courbot /* 460800 */ { 2122872, -95095, 1632 },
3671757abfSAlexandre Courbot /* 537600 */ { 2201331, -96985, 1632 },
3771757abfSAlexandre Courbot /* 614400 */ { 2283479, -98885, 1632 },
3871757abfSAlexandre Courbot /* 691200 */ { 2369315, -100785, 1632 },
3971757abfSAlexandre Courbot /* 768000 */ { 2458841, -102685, 1632 },
4071757abfSAlexandre Courbot /* 844800 */ { 2550821, -104555, 1632 },
4171757abfSAlexandre Courbot /* 921600 */ { 2647676, -106455, 1632 },
4271757abfSAlexandre Courbot };
4371757abfSAlexandre Courbot
4422b6c9e8SAlexandre Courbot static const struct cvb_coef gm20b_na_cvb_coef[] = {
4522b6c9e8SAlexandre Courbot /* KHz, c0, c1, c2, c3, c4, c5 */
4622b6c9e8SAlexandre Courbot /* 76800 */ { 814294, 8144, -940, 808, -21583, 226 },
4722b6c9e8SAlexandre Courbot /* 153600 */ { 856185, 8144, -940, 808, -21583, 226 },
4822b6c9e8SAlexandre Courbot /* 230400 */ { 898077, 8144, -940, 808, -21583, 226 },
4922b6c9e8SAlexandre Courbot /* 307200 */ { 939968, 8144, -940, 808, -21583, 226 },
5022b6c9e8SAlexandre Courbot /* 384000 */ { 981860, 8144, -940, 808, -21583, 226 },
5122b6c9e8SAlexandre Courbot /* 460800 */ { 1023751, 8144, -940, 808, -21583, 226 },
5222b6c9e8SAlexandre Courbot /* 537600 */ { 1065642, 8144, -940, 808, -21583, 226 },
5322b6c9e8SAlexandre Courbot /* 614400 */ { 1107534, 8144, -940, 808, -21583, 226 },
5422b6c9e8SAlexandre Courbot /* 691200 */ { 1149425, 8144, -940, 808, -21583, 226 },
5522b6c9e8SAlexandre Courbot /* 768000 */ { 1191317, 8144, -940, 808, -21583, 226 },
5622b6c9e8SAlexandre Courbot /* 844800 */ { 1233208, 8144, -940, 808, -21583, 226 },
5722b6c9e8SAlexandre Courbot /* 921600 */ { 1275100, 8144, -940, 808, -21583, 226 },
5822b6c9e8SAlexandre Courbot /* 998400 */ { 1316991, 8144, -940, 808, -21583, 226 },
5922b6c9e8SAlexandre Courbot };
6022b6c9e8SAlexandre Courbot
61f3a8b664SBen Skeggs static const u32 speedo_to_vmin[] = {
62791eeea2SAlexandre Courbot /* 0, 1, 2, 3, 4, */
63791eeea2SAlexandre Courbot 950000, 840000, 818750, 840000, 810000,
64791eeea2SAlexandre Courbot };
65791eeea2SAlexandre Courbot
6671757abfSAlexandre Courbot int
gm20b_volt_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_volt ** pvolt)67*d07be5d7SBen Skeggs gm20b_volt_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
68*d07be5d7SBen Skeggs struct nvkm_volt **pvolt)
6971757abfSAlexandre Courbot {
70791eeea2SAlexandre Courbot struct nvkm_device_tegra *tdev = device->func->tegra(device);
7171757abfSAlexandre Courbot struct gk20a_volt *volt;
72791eeea2SAlexandre Courbot u32 vmin;
73791eeea2SAlexandre Courbot
74791eeea2SAlexandre Courbot if (tdev->gpu_speedo_id >= ARRAY_SIZE(speedo_to_vmin)) {
75791eeea2SAlexandre Courbot nvdev_error(device, "unsupported speedo %d\n",
76791eeea2SAlexandre Courbot tdev->gpu_speedo_id);
77791eeea2SAlexandre Courbot return -EINVAL;
78791eeea2SAlexandre Courbot }
7971757abfSAlexandre Courbot
8071757abfSAlexandre Courbot volt = kzalloc(sizeof(*volt), GFP_KERNEL);
8171757abfSAlexandre Courbot if (!volt)
8271757abfSAlexandre Courbot return -ENOMEM;
8371757abfSAlexandre Courbot *pvolt = &volt->base;
8471757abfSAlexandre Courbot
85791eeea2SAlexandre Courbot vmin = speedo_to_vmin[tdev->gpu_speedo_id];
86791eeea2SAlexandre Courbot
8722b6c9e8SAlexandre Courbot if (tdev->gpu_speedo_id >= 1)
88*d07be5d7SBen Skeggs return gk20a_volt_ctor(device, type, inst, gm20b_na_cvb_coef,
8922b6c9e8SAlexandre Courbot ARRAY_SIZE(gm20b_na_cvb_coef), vmin, volt);
9022b6c9e8SAlexandre Courbot else
91*d07be5d7SBen Skeggs return gk20a_volt_ctor(device, type, inst, gm20b_cvb_coef,
92791eeea2SAlexandre Courbot ARRAY_SIZE(gm20b_cvb_coef), vmin, volt);
9371757abfSAlexandre Courbot }
94