[Nouveau] [PATCH v3 3/4] gpio: check the gpio function 16 in the power check as well

[Mark Menzynski]

Added GPIO is "Thermal and External Power Detect". It's uncertain if this
GPIO is set on GPU initialization or only if a change is detected by the
GPU at runtime.

This GPIO can be found in Rankine and Curie and rarely on Tesla GPUs
VBIOS.

Untested, wrote according to documentation.

Signed-off-by: Mark Menzynski <mmenzyns at redhat.com>
---
 drm/nouveau/include/nvkm/subdev/bios/gpio.h | 1 +
 drm/nouveau/nvkm/subdev/gpio/base.c         | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drm/nouveau/include/nvkm/subdev/bios/gpio.h b/drm/nouveau/include/nvkm/subdev/bios/gpio.h
index a70ec9e8..fc2b5fb0 100644
--- a/drm/nouveau/include/nvkm/subdev/bios/gpio.h
+++ b/drm/nouveau/include/nvkm/subdev/bios/gpio.h
@@ -5,6 +5,7 @@ enum dcb_gpio_func_name {
 	DCB_GPIO_PANEL_POWER = 0x01,
 	DCB_GPIO_FAN = 0x09,
 	DCB_GPIO_TVDAC0 = 0x0c,
+	DCB_GPIO_THERM_EXT_POWER_EVENT = 0x10,
 	DCB_GPIO_TVDAC1 = 0x2d,
 	DCB_GPIO_FAN_SENSE = 0x3d,
 	DCB_GPIO_EXT_POWER_LOW = 0x79,
diff --git a/drm/nouveau/nvkm/subdev/gpio/base.c b/drm/nouveau/nvkm/subdev/gpio/base.c
index 72289e2e..cc56637f 100644
--- a/drm/nouveau/nvkm/subdev/gpio/base.c
+++ b/drm/nouveau/nvkm/subdev/gpio/base.c
@@ -184,6 +184,7 @@ 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_EXT_POWER_LOW,
 };
 
-- 
2.21.0