diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c index 1399d923d446..914276410ef8 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gpio/base.c @@ -23,6 +23,7 @@ */ #include "priv.h" +#include <core/option.h> #include <core/notify.h> static int @@ -182,12 +183,43 @@ static const struct dmi_system_id gpio_reset_ids[] = { { } }; +static enum dcb_gpio_func_name power_checks[] = { + DCB_GPIO_THERM_EXT_POWER_EVENT, + DCB_GPIO_POWER_ALERT, + DCB_GPIO_EXT_POWER_LOW, +}; + static int nvkm_gpio_init(struct nvkm_subdev *subdev) { struct nvkm_gpio *gpio = nvkm_gpio(subdev); + struct dcb_gpio_func func; + int ret; + int i; + if (dmi_check_system(gpio_reset_ids)) nvkm_gpio_reset(gpio, DCB_GPIO_UNUSED); + + if (nvkm_boolopt(subdev->device->cfgopt, "NvPowerChecks", true)) { + for (i = 0; i < ARRAY_SIZE(power_checks); ++i) { + ret = nvkm_gpio_find(gpio, 0, power_checks[i], + DCB_GPIO_UNUSED, &func); + if (ret) + continue; + + ret = nvkm_gpio_get(gpio, 0, func.func, func.line); + if (!ret) + continue; + + nvkm_error(&gpio->subdev, + "GPU is missing power, check its power " + "cables. Boot with " + "nouveau.config=NvPowerChecks=0 to " + "disable.\n"); + return -EINVAL; + } + } + return 0; } |