cregit-Linux how code gets into the kernel

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

/*
 * Copyright 2014 Martin Peres
 *
 * 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: Martin Peres
 */
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/fan.h>


static u32 nvbios_fan_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) { struct bit_entry bit_P; u32 fan = 0; if (!bit_entry(bios, 'P', &bit_P)) { if (bit_P.version == 2 && bit_P.length >= 0x5a) fan = nvbios_rd32(bios, bit_P.offset + 0x58); if (fan) { *ver = nvbios_rd08(bios, fan + 0); switch (*ver) { case 0x10: *hdr = nvbios_rd08(bios, fan + 1); *len = nvbios_rd08(bios, fan + 2); *cnt = nvbios_rd08(bios, fan + 3); return fan; default: break; } } } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Martin Peres13992.67%120.00%
Ben Skeggs106.67%360.00%
Baoyou Xie10.67%120.00%
Total150100.00%5100.00%


static u32 nvbios_fan_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) { u32 data = nvbios_fan_table(bios, ver, hdr, cnt, len); if (data && idx < *cnt) return data + *hdr + (idx * (*len)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Martin Peres6893.15%125.00%
Ben Skeggs45.48%250.00%
Baoyou Xie11.37%125.00%
Total73100.00%4100.00%


u32 nvbios_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan) { u8 ver, hdr, cnt, len; u32 data = nvbios_fan_entry(bios, 0, &ver, &hdr, &cnt, &len); if (data) { u8 type = nvbios_rd08(bios, data + 0x00); switch (type) { case 0: fan->type = NVBIOS_THERM_FAN_TOGGLE; break; case 1: case 2: /* TODO: Understand the difference between the two! */ fan->type = NVBIOS_THERM_FAN_PWM; break; default: fan->type = NVBIOS_THERM_FAN_UNK; } fan->fan_mode = NVBIOS_THERM_FAN_LINEAR; fan->min_duty = nvbios_rd08(bios, data + 0x02); fan->max_duty = nvbios_rd08(bios, data + 0x03); fan->pwm_freq = nvbios_rd32(bios, data + 0x0b) & 0xffffff; } return data; }

Contributors

PersonTokensPropCommitsCommitProp
Martin Peres14495.36%240.00%
Ben Skeggs74.64%360.00%
Total151100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Martin Peres36194.01%233.33%
Ben Skeggs215.47%350.00%
Baoyou Xie20.52%116.67%
Total384100.00%6100.00%
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