155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "priv.h"
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static int
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pwm_info(struct nvkm_therm *therm, int line)
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{
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struct nvkm_subdev *subdev = &therm->subdev;
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struct nvkm_device *device = subdev->device;
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u32 gpio = nvkm_rd32(device, 0x00d610 + (line * 0x04));
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switch (gpio & 0x000000c0) {
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case 0x00000000: /* normal mode, possibly pwm forced off by us */
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case 0x00000040: /* nvio special */
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switch (gpio & 0x0000001f) {
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case 0x00: return 2;
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case 0x19: return 1;
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case 0x1c: return 0;
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case 0x1e: return 2;
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default:
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break;
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}
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break;
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default:
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break;
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}
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nvkm_error(subdev, "GPIO %d unknown PWM: %08x\n", line, gpio);
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return -ENODEV;
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}
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int
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gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
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{
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struct nvkm_device *device = therm->subdev.device;
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u32 data = enable ? 0x00000040 : 0x00000000;
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int indx = pwm_info(therm, line);
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if (indx < 0)
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return indx;
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else if (indx < 2)
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nvkm_mask(device, 0x00d610 + (line * 0x04), 0x000000c0, data);
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/* nothing to do for indx == 2, it seems hardwired to PTHERM */
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return 0;
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}
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int
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gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
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{
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struct nvkm_device *device = therm->subdev.device;
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int indx = pwm_info(therm, line);
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if (indx < 0)
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return indx;
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else if (indx < 2) {
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if (nvkm_rd32(device, 0x00d610 + (line * 0x04)) & 0x00000040) {
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*divs = nvkm_rd32(device, 0x00e114 + (indx * 8));
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*duty = nvkm_rd32(device, 0x00e118 + (indx * 8));
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return 0;
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}
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} else if (indx == 2) {
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*divs = nvkm_rd32(device, 0x0200d8) & 0x1fff;
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*duty = nvkm_rd32(device, 0x0200dc) & 0x1fff;
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return 0;
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}
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return -EINVAL;
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}
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int
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gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
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{
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struct nvkm_device *device = therm->subdev.device;
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int indx = pwm_info(therm, line);
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if (indx < 0)
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return indx;
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else if (indx < 2) {
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nvkm_wr32(device, 0x00e114 + (indx * 8), divs);
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nvkm_wr32(device, 0x00e118 + (indx * 8), duty | 0x80000000);
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} else if (indx == 2) {
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nvkm_mask(device, 0x0200d8, 0x1fff, divs); /* keep the high bits */
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nvkm_wr32(device, 0x0200dc, duty | 0x40000000);
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}
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return 0;
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}
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int
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gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
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{
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struct nvkm_device *device = therm->subdev.device;
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int indx = pwm_info(therm, line);
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if (indx < 0)
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return 0;
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else if (indx < 2)
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return (device->crystal * 1000) / 20;
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else
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return device->crystal * 1000 / 10;
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}
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void
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gf119_therm_init(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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g84_sensor_setup(therm);
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/* enable fan tach, count revolutions per-second */
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nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
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if (therm->fan->tach.func != DCB_GPIO_UNUSED) {
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nvkm_mask(device, 0x00d79c, 0x000000ff, therm->fan->tach.line);
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nvkm_wr32(device, 0x00e724, device->crystal * 1000);
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nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
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}
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nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
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}
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static const struct nvkm_therm_func
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gf119_therm = {
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.init = gf119_therm_init,
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.fini = g84_therm_fini,
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.pwm_ctrl = gf119_fan_pwm_ctrl,
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.pwm_get = gf119_fan_pwm_get,
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.pwm_set = gf119_fan_pwm_set,
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.pwm_clock = gf119_fan_pwm_clock,
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.temp_get = g84_temp_get,
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.fan_sense = gt215_therm_fan_sense,
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.program_alarms = nvkm_therm_program_alarms_polling,
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};
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int
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gf119_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_therm **ptherm)
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{
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return nvkm_therm_new_(&gf119_therm, device, type, inst, ptherm);
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}
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