diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c new file mode 100644 index 000000000..9e451bd93 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gt215.c @@ -0,0 +1,75 @@ +/* + * 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 + */ +#include "priv.h" + +#include <subdev/gpio.h> + +int +gt215_therm_fan_sense(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff; + u32 ctrl = nvkm_rd32(device, 0x00e720); + if (ctrl & 0x00000001) + return tach * 60 / 2; + return -ENODEV; +} + +static void +gt215_therm_init(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + struct dcb_gpio_func *tach = &therm->fan->tach; + + g84_sensor_setup(therm); + + /* enable fan tach, count revolutions per-second */ + nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002); + if (tach->func != DCB_GPIO_UNUSED) { + nvkm_wr32(device, 0x00e724, device->crystal * 1000); + nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16); + nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001); + } + nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000); +} + +static const struct nvkm_therm_func +gt215_therm = { + .init = gt215_therm_init, + .fini = g84_therm_fini, + .pwm_ctrl = nv50_fan_pwm_ctrl, + .pwm_get = nv50_fan_pwm_get, + .pwm_set = nv50_fan_pwm_set, + .pwm_clock = nv50_fan_pwm_clock, + .temp_get = g84_temp_get, + .fan_sense = gt215_therm_fan_sense, + .program_alarms = nvkm_therm_program_alarms_polling, +}; + +int +gt215_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_therm **ptherm) +{ + return nvkm_therm_new_(>215_therm, device, type, inst, ptherm); +} |