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Diffstat (limited to 'nvkm/subdev/volt/gk20a.c')
| -rw-r--r-- | nvkm/subdev/volt/gk20a.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/nvkm/subdev/volt/gk20a.c b/nvkm/subdev/volt/gk20a.c deleted file mode 100644 index 717368ef3..000000000 --- a/nvkm/subdev/volt/gk20a.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifdef __KERNEL__ -#include <nouveau_platform.h> -#endif -#include <subdev/volt.h> - -struct cvb_coef { - int c0; - int c1; - int c2; - int c3; - int c4; - int c5; -}; - -struct gk20a_volt_priv { - struct nouveau_volt base; - struct regulator *vdd; -}; - -const struct cvb_coef gk20a_cvb_coef[] = { - /* MHz, c0, c1, c2, c3, c4, c5 */ - /* 72 */ { 1209886, -36468, 515, 417, -13123, 203}, - /* 108 */ { 1130804, -27659, 296, 298, -10834, 221}, - /* 180 */ { 1162871, -27110, 247, 238, -10681, 268}, - /* 252 */ { 1220458, -28654, 247, 179, -10376, 298}, - /* 324 */ { 1280953, -30204, 247, 119, -9766, 304}, - /* 396 */ { 1344547, -31777, 247, 119, -8545, 292}, - /* 468 */ { 1420168, -34227, 269, 60, -7172, 256}, - /* 540 */ { 1490757, -35955, 274, 60, -5188, 197}, - /* 612 */ { 1599112, -42583, 398, 0, -1831, 119}, - /* 648 */ { 1366986, -16459, -274, 0, -3204, 72}, - /* 684 */ { 1391884, -17078, -274, -60, -1526, 30}, - /* 708 */ { 1415522, -17497, -274, -60, -458, 0}, - /* 756 */ { 1464061, -18331, -274, -119, 1831, -72}, - /* 804 */ { 1524225, -20064, -254, -119, 4272, -155}, - /* 852 */ { 1608418, -21643, -269, 0, 763, -48}, -}; - -/** - * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) - */ -static inline int -gk20a_volt_get_cvb_voltage(int speedo, int s_scale, - const struct cvb_coef *coef) -{ - int mv; - - mv = DIV_ROUND_CLOSEST(coef->c2 * speedo, s_scale); - mv = DIV_ROUND_CLOSEST((mv + coef->c1) * speedo, s_scale) + coef->c0; - return mv; -} - -/** - * cvb_t_mv = - * ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) + - * ((c3 * speedo / s_scale + c4 + c5 * T / t_scale) * T / t_scale) - */ -static inline int -gk20a_volt_get_cvb_t_voltage(int speedo, int temp, int s_scale, int t_scale, - const struct cvb_coef *coef) -{ - int cvb_mv, mv; - - cvb_mv = gk20a_volt_get_cvb_voltage(speedo, s_scale, coef); - - mv = DIV_ROUND_CLOSEST(coef->c3 * speedo, s_scale) + coef->c4 + - DIV_ROUND_CLOSEST(coef->c5 * temp, t_scale); - mv = DIV_ROUND_CLOSEST(mv * temp, t_scale) + cvb_mv; - return mv; -} - -static int -gk20a_volt_calc_voltage(const struct cvb_coef *coef, int speedo) -{ - int mv; - - mv = gk20a_volt_get_cvb_t_voltage(speedo, -10, 100, 10, coef); - mv = DIV_ROUND_UP(mv, 1000); - - return mv * 1000; -} - -static int -gk20a_volt_vid_get(struct nouveau_volt *volt) -{ - struct gk20a_volt_priv *priv = (void *)volt; - int i, uv; - - uv = regulator_get_voltage(priv->vdd); - - for (i = 0; i < volt->vid_nr; i++) - if (volt->vid[i].uv >= uv) - return i; - - return -EINVAL; -} - -static int -gk20a_volt_vid_set(struct nouveau_volt *volt, u8 vid) -{ - struct gk20a_volt_priv *priv = (void *)volt; - - nv_debug(volt, "set voltage as %duv\n", volt->vid[vid].uv); - return regulator_set_voltage(priv->vdd, volt->vid[vid].uv, 1200000); -} - -static int -gk20a_volt_set_id(struct nouveau_volt *volt, u8 id, int condition) -{ - struct gk20a_volt_priv *priv = (void *)volt; - int prev_uv = regulator_get_voltage(priv->vdd); - int target_uv = volt->vid[id].uv; - int ret; - - nv_debug(volt, "prev=%d, target=%d, condition=%d\n", - prev_uv, target_uv, condition); - if (!condition || - (condition < 0 && target_uv < prev_uv) || - (condition > 0 && target_uv > prev_uv)) { - ret = gk20a_volt_vid_set(volt, volt->vid[id].vid); - } else { - ret = 0; - } - - return ret; -} - -static int -gk20a_volt_ctor(struct nouveau_object *parent, struct nouveau_object *engine, - struct nouveau_oclass *oclass, void *data, u32 size, - struct nouveau_object **pobject) -{ - struct gk20a_volt_priv *priv; - struct nouveau_volt *volt; - struct nouveau_platform_device *plat; - int i, ret, uv; - - ret = nouveau_volt_create(parent, engine, oclass, &priv); - *pobject = nv_object(priv); - if (ret) - return ret; - - volt = &priv->base; - - plat = nv_device_to_platform(nv_device(parent)); - - uv = regulator_get_voltage(plat->gpu->vdd); - nv_info(priv, "The default voltage is %duV\n", uv); - - priv->vdd = plat->gpu->vdd; - priv->base.vid_get = gk20a_volt_vid_get; - priv->base.vid_set = gk20a_volt_vid_set; - priv->base.set_id = gk20a_volt_set_id; - - volt->vid_nr = ARRAY_SIZE(gk20a_cvb_coef); - nv_debug(priv, "%s - vid_nr = %d\n", __func__, volt->vid_nr); - for (i = 0; i < volt->vid_nr; i++) { - volt->vid[i].vid = i; - volt->vid[i].uv = gk20a_volt_calc_voltage(&gk20a_cvb_coef[i], - plat->gpu_speedo); - nv_debug(priv, "%2d: vid=%d, uv=%d\n", i, volt->vid[i].vid, - volt->vid[i].uv); - } - - return 0; -} - -struct nouveau_oclass -gk20a_volt_oclass = { - .handle = NV_SUBDEV(VOLT, 0xea), - .ofuncs = &(struct nouveau_ofuncs) { - .ctor = gk20a_volt_ctor, - .dtor = _nouveau_volt_dtor, - .init = _nouveau_volt_init, - .fini = _nouveau_volt_fini, - }, -}; |