Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk104.c
/*
* Copyright 2015 Martin Peres
*
* 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: Martin Peres
*/
#include "priv.h"
#include <subdev/volt.h>
#include <subdev/gpio.h>
#include <subdev/bios.h>
#include <subdev/bios/volt.h>
#include <subdev/fuse.h>
#define gk104_volt(p) container_of((p), struct gk104_volt, base)
struct gk104_volt {
struct nvkm_volt base;
struct nvbios_volt bios;
};
static int
gk104_volt_get(struct nvkm_volt *base)
{
struct nvbios_volt *bios = &gk104_volt(base)->bios;
struct nvkm_device *device = base->subdev.device;
u32 div, duty;
div = nvkm_rd32(device, 0x20340);
duty = nvkm_rd32(device, 0x20344);
return bios->base + bios->pwm_range * duty / div;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 70 | 98.59% | 1 | 50.00% |
| Baoyou Xie | 1 | 1.41% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
static int
gk104_volt_set(struct nvkm_volt *base, u32 uv)
{
struct nvbios_volt *bios = &gk104_volt(base)->bios;
struct nvkm_device *device = base->subdev.device;
u32 div, duty;
/* the blob uses this crystal frequency, let's use it too. */
div = 27648000 / bios->pwm_freq;
duty = DIV_ROUND_UP((uv - bios->base) * div, bios->pwm_range);
nvkm_wr32(device, 0x20340, div);
nvkm_wr32(device, 0x20344, 0x80000000 | duty);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 89 | 94.68% | 2 | 50.00% |
| Karol Herbst | 4 | 4.26% | 1 | 25.00% |
| Baoyou Xie | 1 | 1.06% | 1 | 25.00% |
| Total | 94 | 100.00% | 4 | 100.00% |
static int
gk104_volt_speedo_read(struct nvkm_volt *volt)
{
struct nvkm_device *device = volt->subdev.device;
struct nvkm_fuse *fuse = device->fuse;
int ret;
if (!fuse)
return -EINVAL;
nvkm_wr32(device, 0x122634, 0x0);
ret = nvkm_fuse_read(fuse, 0x3a8);
nvkm_wr32(device, 0x122634, 0x41);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Karol Herbst | 73 | 100.00% | 1 | 100.00% |
| Total | 73 | 100.00% | 1 | 100.00% |
static const struct nvkm_volt_func
gk104_volt_pwm = {
.oneinit = gf100_volt_oneinit,
.volt_get = gk104_volt_get,
.volt_set = gk104_volt_set,
.speedo_read = gk104_volt_speedo_read,
}
, gk104_volt_gpio = {
.oneinit = gf100_volt_oneinit,
.vid_get = nvkm_voltgpio_get,
.vid_set = nvkm_voltgpio_set,
.speedo_read = gk104_volt_speedo_read,
};
int
gk104_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
{
const struct nvkm_volt_func *volt_func = &gk104_volt_gpio;
struct dcb_gpio_func gpio;
struct nvbios_volt bios;
struct gk104_volt *volt;
u8 ver, hdr, cnt, len;
const char *mode;
if (!nvbios_volt_parse(device->bios, &ver, &hdr, &cnt, &len, &bios))
return 0;
if (!nvkm_gpio_find(device->gpio, 0, DCB_GPIO_VID_PWM, 0xff, &gpio) &&
bios.type == NVBIOS_VOLT_PWM) {
volt_func = &gk104_volt_pwm;
}
if (!(volt = kzalloc(sizeof(*volt), GFP_KERNEL)))
return -ENOMEM;
nvkm_volt_ctor(volt_func, device, index, &volt->base);
*pvolt = &volt->base;
volt->bios = bios;
/* now that we have a subdev, we can show an error if we found through
* the voltage table that we were supposed to use the PWN mode but we
* did not find the right GPIO for it.
*/
if (bios.type == NVBIOS_VOLT_PWM && volt_func != &gk104_volt_pwm) {
nvkm_error(&volt->base.subdev,
"Type mismatch between the voltage table type and "
"the GPIO table. Fallback to GPIO mode.\n");
}
if (volt_func == &gk104_volt_gpio) {
nvkm_voltgpio_init(&volt->base);
mode = "GPIO";
} else
mode = "PWM";
nvkm_debug(&volt->base.subdev, "Using %s mode\n", mode);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 237 | 100.00% | 1 | 100.00% |
| Total | 237 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Martin Peres | 464 | 81.98% | 2 | 40.00% |
| Karol Herbst | 100 | 17.67% | 2 | 40.00% |
| Baoyou Xie | 2 | 0.35% | 1 | 20.00% |
| Total | 566 | 100.00% | 5 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.