From: Martin Peres Date: Sun, 17 Aug 2014 15:33:06 +0000 (+0200) Subject: drm/nouveau/bios/fan: add support for maxwell's fan management table v2 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=288c17bd9e959a32cfd8c3aec96410579cb9dccc;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/nouveau/bios/fan: add support for maxwell's fan management table v2 Re-use the therm-exported fan structure with only two minor modifications: - pwm_freq: u16 -> u32; - add fan_type (toggle or PWM) v2: - Do not memset the table to 0 as it erases the pre-set default values Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index f5d7f7ce4bc6..75aa5e332d4f 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -52,6 +52,7 @@ nouveau-y += core/subdev/bios/vmap.o nouveau-y += core/subdev/bios/volt.o nouveau-y += core/subdev/bios/xpio.o nouveau-y += core/subdev/bios/P0260.o +nouveau-y += core/subdev/bios/fan.o nouveau-y += core/subdev/bus/hwsq.o nouveau-y += core/subdev/bus/nv04.o nouveau-y += core/subdev/bus/nv31.o diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/fan.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/fan.h new file mode 100644 index 000000000000..119d0874e041 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/fan.h @@ -0,0 +1,8 @@ +#ifndef __NVBIOS_FAN_H__ +#define __NVBIOS_FAN_H__ + +#include + +u16 nvbios_fan_parse(struct nouveau_bios *bios, struct nvbios_therm_fan *fan); + +#endif diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/therm.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/therm.h index 8dc5051df55d..295d093f3b30 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/bios/therm.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/therm.h @@ -23,6 +23,12 @@ struct nvbios_therm_sensor { struct nvbios_therm_threshold thrs_shutdown; }; +enum nvbios_therm_fan_type { + NVBIOS_THERM_FAN_UNK = 0, + NVBIOS_THERM_FAN_TOGGLE = 1, + NVBIOS_THERM_FAN_PWM = 2, +}; + /* no vbios have more than 6 */ #define NOUVEAU_TEMP_FAN_TRIP_MAX 10 struct nouveau_therm_trip_point { @@ -38,7 +44,9 @@ enum nvbios_therm_fan_mode { }; struct nvbios_therm_fan { - u16 pwm_freq; + enum nvbios_therm_fan_type type; + + u32 pwm_freq; u8 min_duty; u8 max_duty; diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/fan.c b/drivers/gpu/drm/nouveau/core/subdev/bios/fan.c new file mode 100644 index 000000000000..e419892240f5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/fan.c @@ -0,0 +1,93 @@ +/* + * 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 +#include +#include + +u16 +nvbios_fan_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + struct bit_entry bit_P; + u16 fan = 0x0000; + + if (!bit_entry(bios, 'P', &bit_P)) { + if (bit_P.version == 2 && bit_P.length >= 0x5a) + fan = nv_ro16(bios, bit_P.offset + 0x58); + + if (fan) { + *ver = nv_ro08(bios, fan + 0); + switch (*ver) { + case 0x10: + *hdr = nv_ro08(bios, fan + 1); + *len = nv_ro08(bios, fan + 2); + *cnt = nv_ro08(bios, fan + 3); + return fan; + default: + break; + } + } + } + + return 0x0000; +} + +u16 +nvbios_fan_entry(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr, + u8 *cnt, u8 *len) +{ + u16 data = nvbios_fan_table(bios, ver, hdr, cnt, len); + if (data && idx < *cnt) + return data + *hdr + (idx * (*len)); + return 0x0000; +} + +u16 +nvbios_fan_parse(struct nouveau_bios *bios, struct nvbios_therm_fan *fan) +{ + u8 ver, hdr, cnt, len; + + u16 data = nvbios_fan_entry(bios, 0, &ver, &hdr, &cnt, &len); + if (data) { + u8 type = nv_ro08(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->min_duty = nv_ro08(bios, data + 0x02); + fan->max_duty = nv_ro08(bios, data + 0x03); + + fan->pwm_freq = nv_ro32(bios, data + 0x0b) & 0xffffff; + } + return data; +}