drm/nouveau/gpio/tu102-: prepare for GSP-RM

- disable GPIO completely when GSP-RM detected

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-13-skeggsb@gmail.com

Author: Ben Skeggs

drivers/gpu/drm/nouveau/nvkm/subdev/gpio/ga102.c

@@ -21,6 +21,8 @@
  */
 #include "priv.h"
 
+#include <subdev/gsp.h>
+
 static void
 ga102_gpio_reset(struct nvkm_gpio *gpio, u8 match)
 {
@@ -115,5 +117,8 @@ int
 ga102_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 	       struct nvkm_gpio **pgpio)
 {
+	if (nvkm_gsp_rm(device->gsp))
+		return -ENODEV;
+
 	return nvkm_gpio_new_(&ga102_gpio, device, type, inst, pgpio);
 }

drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gk104.c

@@ -23,6 +23,8 @@
  */
 #include "priv.h"
 
+#include <subdev/gsp.h>
+
 static void
 gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
 {
@@ -71,5 +73,8 @@ int
 gk104_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 	       struct nvkm_gpio **pgpio)
 {
+	if (nvkm_gsp_rm(device->gsp))
+		return -ENODEV;
+
 	return nvkm_gpio_new_(&gk104_gpio, device, type, inst, pgpio);
 }