1/* $NetBSD: nouveau_nvkm_subdev_therm_gt215.c,v 1.4 2021/12/19 10:51:59 riastradh Exp $ */ 2 3/* 4 * Copyright 2012 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_therm_gt215.c,v 1.4 2021/12/19 10:51:59 riastradh Exp $"); 28 29#include "priv.h" 30 31#include <subdev/gpio.h> 32 33int 34gt215_therm_fan_sense(struct nvkm_therm *therm) 35{ 36 struct nvkm_device *device = therm->subdev.device; 37 u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff; 38 u32 ctrl = nvkm_rd32(device, 0x00e720); 39 if (ctrl & 0x00000001) 40 return tach * 60 / 2; 41 return -ENODEV; 42} 43 44static void 45gt215_therm_init(struct nvkm_therm *therm) 46{ 47 struct nvkm_device *device = therm->subdev.device; 48 struct dcb_gpio_func *tach = &therm->fan->tach; 49 50 g84_sensor_setup(therm); 51 52 /* enable fan tach, count revolutions per-second */ 53 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002); 54 if (tach->func != DCB_GPIO_UNUSED) { 55 nvkm_wr32(device, 0x00e724, device->crystal * 1000); 56 nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16); 57 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001); 58 } 59 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000); 60} 61 62static const struct nvkm_therm_func 63gt215_therm = { 64 .init = gt215_therm_init, 65 .fini = g84_therm_fini, 66 .pwm_ctrl = nv50_fan_pwm_ctrl, 67 .pwm_get = nv50_fan_pwm_get, 68 .pwm_set = nv50_fan_pwm_set, 69 .pwm_clock = nv50_fan_pwm_clock, 70 .temp_get = g84_temp_get, 71 .fan_sense = gt215_therm_fan_sense, 72 .program_alarms = nvkm_therm_program_alarms_polling, 73}; 74 75int 76gt215_therm_new(struct nvkm_device *device, int index, 77 struct nvkm_therm **ptherm) 78{ 79 return nvkm_therm_new_(>215_therm, device, index, ptherm); 80} 81