2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
27 enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 };
29 static enum nv40_sensor_style
30 nv40_sensor_style(struct nvkm_therm *therm)
32 switch (therm->subdev.device->chipset) {
53 nv40_sensor_setup(struct nvkm_therm *therm)
55 struct nvkm_device *device = therm->subdev.device;
56 enum nv40_sensor_style style = nv40_sensor_style(therm);
58 /* enable ADC readout and disable the ALARM threshold */
59 if (style == NEW_STYLE) {
60 nvkm_mask(device, 0x15b8, 0x80000000, 0);
61 nvkm_wr32(device, 0x15b0, 0x80003fff);
62 mdelay(20); /* wait for the temperature to stabilize */
63 return nvkm_rd32(device, 0x15b4) & 0x3fff;
64 } else if (style == OLD_STYLE) {
65 nvkm_wr32(device, 0x15b0, 0xff);
66 mdelay(20); /* wait for the temperature to stabilize */
67 return nvkm_rd32(device, 0x15b4) & 0xff;
73 nv40_temp_get(struct nvkm_therm *therm)
75 struct nvkm_device *device = therm->subdev.device;
76 struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
77 enum nv40_sensor_style style = nv40_sensor_style(therm);
80 if (style == NEW_STYLE) {
81 nvkm_wr32(device, 0x15b0, 0x80003fff);
82 core_temp = nvkm_rd32(device, 0x15b4) & 0x3fff;
83 } else if (style == OLD_STYLE) {
84 nvkm_wr32(device, 0x15b0, 0xff);
85 core_temp = nvkm_rd32(device, 0x15b4) & 0xff;
89 /* if the slope or the offset is unset, do no use the sensor */
90 if (!sensor->slope_div || !sensor->slope_mult ||
91 !sensor->offset_num || !sensor->offset_den)
94 core_temp = core_temp * sensor->slope_mult / sensor->slope_div;
95 core_temp = core_temp + sensor->offset_num / sensor->offset_den;
96 core_temp = core_temp + sensor->offset_constant - 8;
98 /* reserve negative temperatures for errors */
106 nv40_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
108 struct nvkm_subdev *subdev = &therm->subdev;
109 struct nvkm_device *device = subdev->device;
110 u32 mask = enable ? 0x80000000 : 0x00000000;
111 if (line == 2) nvkm_mask(device, 0x0010f0, 0x80000000, mask);
112 else if (line == 9) nvkm_mask(device, 0x0015f4, 0x80000000, mask);
114 nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line);
121 nv40_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
123 struct nvkm_subdev *subdev = &therm->subdev;
124 struct nvkm_device *device = subdev->device;
126 u32 reg = nvkm_rd32(device, 0x0010f0);
127 if (reg & 0x80000000) {
128 *duty = (reg & 0x7fff0000) >> 16;
129 *divs = (reg & 0x00007fff);
134 u32 reg = nvkm_rd32(device, 0x0015f4);
135 if (reg & 0x80000000) {
136 *divs = nvkm_rd32(device, 0x0015f8);
137 *duty = (reg & 0x7fffffff);
141 nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line);
149 nv40_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
151 struct nvkm_subdev *subdev = &therm->subdev;
152 struct nvkm_device *device = subdev->device;
154 nvkm_mask(device, 0x0010f0, 0x7fff7fff, (duty << 16) | divs);
157 nvkm_wr32(device, 0x0015f8, divs);
158 nvkm_mask(device, 0x0015f4, 0x7fffffff, duty);
160 nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", line);
168 nv40_therm_intr(struct nvkm_therm *therm)
170 struct nvkm_subdev *subdev = &therm->subdev;
171 struct nvkm_device *device = subdev->device;
172 uint32_t stat = nvkm_rd32(device, 0x1100);
177 nvkm_wr32(device, 0x1100, 0x70000);
179 nvkm_error(subdev, "THERM received an IRQ: stat = %x\n", stat);
183 nv40_therm_init(struct nvkm_therm *therm)
185 nv40_sensor_setup(therm);
188 static const struct nvkm_therm_func
190 .init = nv40_therm_init,
191 .intr = nv40_therm_intr,
192 .pwm_ctrl = nv40_fan_pwm_ctrl,
193 .pwm_get = nv40_fan_pwm_get,
194 .pwm_set = nv40_fan_pwm_set,
195 .temp_get = nv40_temp_get,
196 .program_alarms = nvkm_therm_program_alarms_polling,
200 nv40_therm_new(struct nvkm_device *device, int index,
201 struct nvkm_therm **ptherm)
203 return nvkm_therm_new_(&nv40_therm, device, index, ptherm);