int
_gk20a_volt_ctor(struct nvkm_device *device, int index,
const struct cvb_coef *coefs, int nb_coefs,
struct gk20a_volt *volt)
{
struct nvkm_device_tegra *tdev = device->func->tegra(device);
int i, uv;
nvkm_volt_ctor(&gk20a_volt, device, index, &volt->base);
uv = regulator_get_voltage(tdev->vdd);
nvkm_debug(&volt->base.subdev, "the default voltage is %duV\n", uv);
volt->vdd = tdev->vdd;
volt->base.vid_nr = nb_coefs;
for (i = 0; i < volt->base.vid_nr; i++) {
volt->base.vid[i].vid = i;
volt->base.vid[i].uv =
gk20a_volt_calc_voltage(&coefs[i],
tdev->gpu_speedo);
nvkm_debug(&volt->base.subdev, "%2d: vid=%d, uv=%d\n", i,
volt->base.vid[i].vid, volt->base.vid[i].uv);
}
return 0;
}
int
gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
{
struct nvkm_device_tegra *tdev = device->func->tegra(device);
struct gk20a_volt *volt;
int i, uv;
if (!(volt = kzalloc(sizeof(*volt), GFP_KERNEL)))
return -ENOMEM;
nvkm_volt_ctor(&gk20a_volt, device, index, &volt->base);
*pvolt = &volt->base;
uv = regulator_get_voltage(tdev->vdd);
nvkm_info(&volt->base.subdev, "The default voltage is %duV\n", uv);
volt->vdd = tdev->vdd;
volt->base.vid_nr = ARRAY_SIZE(gk20a_cvb_coef);
nvkm_debug(&volt->base.subdev, "%s - vid_nr = %d\n", __func__,
volt->base.vid_nr);
for (i = 0; i < volt->base.vid_nr; i++) {
volt->base.vid[i].vid = i;
volt->base.vid[i].uv =
gk20a_volt_calc_voltage(&gk20a_cvb_coef[i],
tdev->gpu_speedo);
nvkm_debug(&volt->base.subdev, "%2d: vid=%d, uv=%d\n", i,
volt->base.vid[i].vid, volt->base.vid[i].uv);
}
return 0;
}
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;
}
