diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c new file mode 100644 index 000000000..c13fee973 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c @@ -0,0 +1,204 @@ +/* + * 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" + +enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 }; + +static enum nv40_sensor_style +nv40_sensor_style(struct nvkm_therm *therm) +{ + switch (therm->subdev.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 nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + enum nv40_sensor_style style = nv40_sensor_style(therm); + + /* enable ADC readout and disable the ALARM threshold */ + if (style == NEW_STYLE) { + nvkm_mask(device, 0x15b8, 0x80000000, 0); + nvkm_wr32(device, 0x15b0, 0x80003fff); + mdelay(20); /* wait for the temperature to stabilize */ + return nvkm_rd32(device, 0x15b4) & 0x3fff; + } else if (style == OLD_STYLE) { + nvkm_wr32(device, 0x15b0, 0xff); + mdelay(20); /* wait for the temperature to stabilize */ + return nvkm_rd32(device, 0x15b4) & 0xff; + } else + return -ENODEV; +} + +static int +nv40_temp_get(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + struct nvbios_therm_sensor *sensor = &therm->bios_sensor; + enum nv40_sensor_style style = nv40_sensor_style(therm); + int core_temp; + + if (style == NEW_STYLE) { + nvkm_wr32(device, 0x15b0, 0x80003fff); + core_temp = nvkm_rd32(device, 0x15b4) & 0x3fff; + } else if (style == OLD_STYLE) { + nvkm_wr32(device, 0x15b0, 0xff); + core_temp = nvkm_rd32(device, 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 nvkm_therm *therm, int line, bool enable) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + u32 mask = enable ? 0x80000000 : 0x00000000; + if (line == 2) nvkm_mask(device, 0x0010f0, 0x80000000, mask); + else if (line == 9) nvkm_mask(device, 0x0015f4, 0x80000000, mask); + else { + nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line); + return -ENODEV; + } + return 0; +} + +static int +nv40_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + if (line == 2) { + u32 reg = nvkm_rd32(device, 0x0010f0); + if (reg & 0x80000000) { + *duty = (reg & 0x7fff0000) >> 16; + *divs = (reg & 0x00007fff); + return 0; + } + } else + if (line == 9) { + u32 reg = nvkm_rd32(device, 0x0015f4); + if (reg & 0x80000000) { + *divs = nvkm_rd32(device, 0x0015f8); + *duty = (reg & 0x7fffffff); + return 0; + } + } else { + nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line); + return -ENODEV; + } + + return -EINVAL; +} + +static int +nv40_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + if (line == 2) { + nvkm_mask(device, 0x0010f0, 0x7fff7fff, (duty << 16) | divs); + } else + if (line == 9) { + nvkm_wr32(device, 0x0015f8, divs); + nvkm_mask(device, 0x0015f4, 0x7fffffff, duty); + } else { + nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line); + return -ENODEV; + } + + return 0; +} + +void +nv40_therm_intr(struct nvkm_therm *therm) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + uint32_t stat = nvkm_rd32(device, 0x1100); + + /* traitement */ + + /* ack all IRQs */ + nvkm_wr32(device, 0x1100, 0x70000); + + nvkm_error(subdev, "THERM received an IRQ: stat = %x\n", stat); +} + +static void +nv40_therm_init(struct nvkm_therm *therm) +{ + nv40_sensor_setup(therm); +} + +static const struct nvkm_therm_func +nv40_therm = { + .init = nv40_therm_init, + .intr = nv40_therm_intr, + .pwm_ctrl = nv40_fan_pwm_ctrl, + .pwm_get = nv40_fan_pwm_get, + .pwm_set = nv40_fan_pwm_set, + .temp_get = nv40_temp_get, + .program_alarms = nvkm_therm_program_alarms_polling, +}; + +int +nv40_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_therm **ptherm) +{ + return nvkm_therm_new_(&nv40_therm, device, type, inst, ptherm); +} |