| /* |
| * 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" |
| |
| struct nv40_therm_priv { |
| struct nouveau_therm_priv base; |
| }; |
| |
| enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 }; |
| |
| static enum nv40_sensor_style |
| nv40_sensor_style(struct nouveau_therm *therm) |
| { |
| struct nouveau_device *device = nv_device(therm); |
| |
| switch (device->chipset) { |
| case 0x43: |
| case 0x44: |
| case 0x4a: |
| case 0x47: |
| return OLD_STYLE; |
| |
| case 0x46: |
| case 0x49: |
| case 0x4b: |
| case 0x4e: |
| case 0x4c: |
| case 0x67: |
| case 0x68: |
| case 0x63: |
| return NEW_STYLE; |
| default: |
| return INVALID_STYLE; |
| } |
| } |
| |
| static int |
| nv40_sensor_setup(struct nouveau_therm *therm) |
| { |
| enum nv40_sensor_style style = nv40_sensor_style(therm); |
| |
| /* enable ADC readout and disable the ALARM threshold */ |
| if (style == NEW_STYLE) { |
| nv_mask(therm, 0x15b8, 0x80000000, 0); |
| nv_wr32(therm, 0x15b0, 0x80003fff); |
| mdelay(20); /* wait for the temperature to stabilize */ |
| return nv_rd32(therm, 0x15b4) & 0x3fff; |
| } else if (style == OLD_STYLE) { |
| nv_wr32(therm, 0x15b0, 0xff); |
| mdelay(20); /* wait for the temperature to stabilize */ |
| return nv_rd32(therm, 0x15b4) & 0xff; |
| } else |
| return -ENODEV; |
| } |
| |
| static int |
| nv40_temp_get(struct nouveau_therm *therm) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| struct nvbios_therm_sensor *sensor = &priv->bios_sensor; |
| enum nv40_sensor_style style = nv40_sensor_style(therm); |
| int core_temp; |
| |
| if (style == NEW_STYLE) { |
| nv_wr32(therm, 0x15b0, 0x80003fff); |
| core_temp = nv_rd32(therm, 0x15b4) & 0x3fff; |
| } else if (style == OLD_STYLE) { |
| nv_wr32(therm, 0x15b0, 0xff); |
| core_temp = nv_rd32(therm, 0x15b4) & 0xff; |
| } else |
| return -ENODEV; |
| |
| /* if the slope or the offset is unset, do no use the sensor */ |
| if (!sensor->slope_div || !sensor->slope_mult || |
| !sensor->offset_num || !sensor->offset_den) |
| return -ENODEV; |
| |
| core_temp = core_temp * sensor->slope_mult / sensor->slope_div; |
| core_temp = core_temp + sensor->offset_num / sensor->offset_den; |
| core_temp = core_temp + sensor->offset_constant - 8; |
| |
| /* reserve negative temperatures for errors */ |
| if (core_temp < 0) |
| core_temp = 0; |
| |
| return core_temp; |
| } |
| |
| static int |
| nv40_fan_pwm_ctrl(struct nouveau_therm *therm, int line, bool enable) |
| { |
| u32 mask = enable ? 0x80000000 : 0x0000000; |
| if (line == 2) nv_mask(therm, 0x0010f0, 0x80000000, mask); |
| else if (line == 9) nv_mask(therm, 0x0015f4, 0x80000000, mask); |
| else { |
| nv_error(therm, "unknown pwm ctrl for gpio %d\n", line); |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| static int |
| nv40_fan_pwm_get(struct nouveau_therm *therm, int line, u32 *divs, u32 *duty) |
| { |
| if (line == 2) { |
| u32 reg = nv_rd32(therm, 0x0010f0); |
| if (reg & 0x80000000) { |
| *duty = (reg & 0x7fff0000) >> 16; |
| *divs = (reg & 0x00007fff); |
| return 0; |
| } |
| } else |
| if (line == 9) { |
| u32 reg = nv_rd32(therm, 0x0015f4); |
| if (reg & 0x80000000) { |
| *divs = nv_rd32(therm, 0x0015f8); |
| *duty = (reg & 0x7fffffff); |
| return 0; |
| } |
| } else { |
| nv_error(therm, "unknown pwm ctrl for gpio %d\n", line); |
| return -ENODEV; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int |
| nv40_fan_pwm_set(struct nouveau_therm *therm, int line, u32 divs, u32 duty) |
| { |
| if (line == 2) { |
| nv_mask(therm, 0x0010f0, 0x7fff7fff, (duty << 16) | divs); |
| } else |
| if (line == 9) { |
| nv_wr32(therm, 0x0015f8, divs); |
| nv_mask(therm, 0x0015f4, 0x7fffffff, duty); |
| } else { |
| nv_error(therm, "unknown pwm ctrl for gpio %d\n", line); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| void |
| nv40_therm_intr(struct nouveau_subdev *subdev) |
| { |
| struct nouveau_therm *therm = nouveau_therm(subdev); |
| uint32_t stat = nv_rd32(therm, 0x1100); |
| |
| /* traitement */ |
| |
| /* ack all IRQs */ |
| nv_wr32(therm, 0x1100, 0x70000); |
| |
| nv_error(therm, "THERM received an IRQ: stat = %x\n", stat); |
| } |
| |
| static int |
| nv40_therm_ctor(struct nouveau_object *parent, |
| struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct nv40_therm_priv *priv; |
| int ret; |
| |
| ret = nouveau_therm_create(parent, engine, oclass, &priv); |
| *pobject = nv_object(priv); |
| if (ret) |
| return ret; |
| |
| priv->base.base.pwm_ctrl = nv40_fan_pwm_ctrl; |
| priv->base.base.pwm_get = nv40_fan_pwm_get; |
| priv->base.base.pwm_set = nv40_fan_pwm_set; |
| priv->base.base.temp_get = nv40_temp_get; |
| priv->base.sensor.program_alarms = nouveau_therm_program_alarms_polling; |
| nv_subdev(priv)->intr = nv40_therm_intr; |
| return nouveau_therm_preinit(&priv->base.base); |
| } |
| |
| static int |
| nv40_therm_init(struct nouveau_object *object) |
| { |
| struct nouveau_therm *therm = (void *)object; |
| |
| nv40_sensor_setup(therm); |
| |
| return _nouveau_therm_init(object); |
| } |
| |
| struct nouveau_oclass |
| nv40_therm_oclass = { |
| .handle = NV_SUBDEV(THERM, 0x40), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nv40_therm_ctor, |
| .dtor = _nouveau_therm_dtor, |
| .init = nv40_therm_init, |
| .fini = _nouveau_therm_fini, |
| }, |
| }; |