cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/vpstate.c

/*
 * Copyright 2016 Karol Herbst
 *
 * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * Authors: Karol Herbst
 */
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/vpstate.h>


static u32 nvbios_vpstate_offset(struct nvkm_bios *b) { struct bit_entry bit_P; if (!bit_entry(b, 'P', &bit_P)) { if (bit_P.version == 2) return nvbios_rd32(b, bit_P.offset + 0x38); } return 0x0000; }

Contributors

PersonTokensPropCommitsCommitProp
Karol Herbst53100.00%1100.00%
Total53100.00%1100.00%


int nvbios_vpstate_parse(struct nvkm_bios *b, struct nvbios_vpstate_header *h) { if (!h) return -EINVAL; h->offset = nvbios_vpstate_offset(b); if (!h->offset) return -ENODEV; h->version = nvbios_rd08(b, h->offset); switch (h->version) { case 0x10: h->hlen = nvbios_rd08(b, h->offset + 0x1); h->elen = nvbios_rd08(b, h->offset + 0x2); h->slen = nvbios_rd08(b, h->offset + 0x3); h->scount = nvbios_rd08(b, h->offset + 0x4); h->ecount = nvbios_rd08(b, h->offset + 0x5); h->base_id = nvbios_rd08(b, h->offset + 0x0f); h->boost_id = nvbios_rd08(b, h->offset + 0x10); h->tdp_id = nvbios_rd08(b, h->offset + 0x11); return 0; default: return -EINVAL; } }

Contributors

PersonTokensPropCommitsCommitProp
Karol Herbst196100.00%1100.00%
Total196100.00%1100.00%


int nvbios_vpstate_entry(struct nvkm_bios *b, struct nvbios_vpstate_header *h, u8 idx, struct nvbios_vpstate_entry *e) { u32 offset; if (!e || !h || idx > h->ecount) return -EINVAL; offset = h->offset + h->hlen + idx * (h->elen + (h->slen * h->scount)); e->pstate = nvbios_rd08(b, offset); e->clock_mhz = nvbios_rd16(b, offset + 0x5); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Karol Herbst99100.00%1100.00%
Total99100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Karol Herbst358100.00%1100.00%
Total358100.00%1100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.