drm/nouveau/disp: add output detect method

This will check the relevant hotplug pin and skip the DDC probe we
currently do if a display is present.

- preparation for GSP-RM.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Danilo Krummrich <me@dakr.org>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-8-lyude@redhat.com

1 files changed, 0 insertions, 41 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
index dad942be6679..971cccc0892c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
@@ -100,46 +100,6 @@ nvkm_uconn_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_
 			       nvkm_uconn_uevent_gpio);
 }
 
-static int
-nvkm_uconn_mthd_hpd_status(struct nvkm_conn *conn, void *argv, u32 argc)
-{
-	struct nvkm_gpio *gpio = conn->disp->engine.subdev.device->gpio;
-	union nvif_conn_hpd_status_args *args = argv;
-
-	if (argc != sizeof(args->v0) || args->v0.version != 0)
-		return -ENOSYS;
-
-	args->v0.support = gpio && conn->info.hpd != DCB_GPIO_UNUSED;
-	args->v0.present = 0;
-
-	if (args->v0.support) {
-		int ret = nvkm_gpio_get(gpio, 0, DCB_GPIO_UNUSED, conn->info.hpd);
-
-		if (WARN_ON(ret < 0)) {
-			args->v0.support = false;
-			return 0;
-		}
-
-		args->v0.present = ret;
-	}
-
-	return 0;
-}
-
-static int
-nvkm_uconn_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
-{
-	struct nvkm_conn *conn = nvkm_uconn(object);
-
-	switch (mthd) {
-	case NVIF_CONN_V0_HPD_STATUS: return nvkm_uconn_mthd_hpd_status(conn, argv, argc);
-	default:
-		break;
-	}
-
-	return -EINVAL;
-}
-
 static void *
 nvkm_uconn_dtor(struct nvkm_object *object)
 {
@@ -155,7 +115,6 @@ nvkm_uconn_dtor(struct nvkm_object *object)
 static const struct nvkm_object_func
 nvkm_uconn = {
 	.dtor = nvkm_uconn_dtor,
-	.mthd = nvkm_uconn_mthd,
 	.uevent = nvkm_uconn_uevent,
 };