| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * 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: Ben Skeggs |
| * Martin Peres |
| */ |
| |
| #include "priv.h" |
| |
| static int |
| pwm_info(struct nouveau_therm *therm, int *line, int *ctrl, int *indx) |
| { |
| if (*line == 0x04) { |
| *ctrl = 0x00e100; |
| *line = 4; |
| *indx = 0; |
| } else |
| if (*line == 0x09) { |
| *ctrl = 0x00e100; |
| *line = 9; |
| *indx = 1; |
| } else |
| if (*line == 0x10) { |
| *ctrl = 0x00e28c; |
| *line = 0; |
| *indx = 0; |
| } else { |
| nv_error(therm, "unknown pwm ctrl for gpio %d\n", *line); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| int |
| nv50_fan_pwm_get(struct nouveau_therm *therm, int line, u32 *divs, u32 *duty) |
| { |
| int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id); |
| if (ret) |
| return ret; |
| |
| if (nv_rd32(therm, ctrl) & (1 << line)) { |
| *divs = nv_rd32(therm, 0x00e114 + (id * 8)); |
| *duty = nv_rd32(therm, 0x00e118 + (id * 8)); |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| int |
| nv50_fan_pwm_set(struct nouveau_therm *therm, int line, u32 divs, u32 duty) |
| { |
| int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id); |
| if (ret) |
| return ret; |
| |
| nv_mask(therm, ctrl, 0x00010001 << line, 0x00000001 << line); |
| nv_wr32(therm, 0x00e114 + (id * 8), divs); |
| nv_wr32(therm, 0x00e118 + (id * 8), duty | 0x80000000); |
| return 0; |
| } |
| |
| int |
| nv50_fan_pwm_clock(struct nouveau_therm *therm) |
| { |
| int chipset = nv_device(therm)->chipset; |
| int crystal = nv_device(therm)->crystal; |
| int pwm_clock; |
| |
| /* determine the PWM source clock */ |
| if (chipset > 0x50 && chipset < 0x94) { |
| u8 pwm_div = nv_rd32(therm, 0x410c); |
| if (nv_rd32(therm, 0xc040) & 0x800000) { |
| /* Use the HOST clock (100 MHz) |
| * Where does this constant(2.4) comes from? */ |
| pwm_clock = (100000000 >> pwm_div) * 10 / 24; |
| } else { |
| /* Where does this constant(20) comes from? */ |
| pwm_clock = (crystal * 1000) >> pwm_div; |
| pwm_clock /= 20; |
| } |
| } else { |
| pwm_clock = (crystal * 1000) / 20; |
| } |
| |
| return pwm_clock; |
| } |
| |
| int |
| nv50_temp_get(struct nouveau_therm *therm) |
| { |
| return nv_rd32(therm, 0x20400); |
| } |
| |
| static int |
| nv50_therm_ctor(struct nouveau_object *parent, |
| struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct nouveau_therm_priv *priv; |
| struct nouveau_therm *therm; |
| int ret; |
| |
| ret = nouveau_therm_create(parent, engine, oclass, &priv); |
| *pobject = nv_object(priv); |
| therm = (void *) priv; |
| if (ret) |
| return ret; |
| |
| nouveau_therm_ic_ctor(therm); |
| nouveau_therm_sensor_ctor(therm); |
| nouveau_therm_fan_ctor(therm); |
| |
| priv->fan.pwm_get = nv50_fan_pwm_get; |
| priv->fan.pwm_set = nv50_fan_pwm_set; |
| priv->fan.pwm_clock = nv50_fan_pwm_clock; |
| |
| therm->temp_get = nv50_temp_get; |
| therm->fan_get = nouveau_therm_fan_user_get; |
| therm->fan_set = nouveau_therm_fan_user_set; |
| therm->fan_sense = nouveau_therm_fan_sense; |
| therm->attr_get = nouveau_therm_attr_get; |
| therm->attr_set = nouveau_therm_attr_set; |
| |
| return 0; |
| } |
| |
| struct nouveau_oclass |
| nv50_therm_oclass = { |
| .handle = NV_SUBDEV(THERM, 0x50), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nv50_therm_ctor, |
| .dtor = _nouveau_therm_dtor, |
| .init = nouveau_therm_init, |
| .fini = nouveau_therm_fini, |
| }, |
| }; |