drm/nouveau/acr: allow module to load when HSFW(s) are missing

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c

@@ -32,6 +32,17 @@
 #include <nvfw/acr.h>
 #include <nvfw/flcn.h>
 
+const struct nvkm_acr_func
+gm200_acr = {
+};
+
+int
+gm200_acr_nofw(struct nvkm_acr *acr, int ver, const struct nvkm_acr_fwif *fwif)
+{
+	nvkm_warn(&acr->subdev, "firmware unavailable\n");
+	return 0;
+}
+
 int
 gm200_acr_init(struct nvkm_acr *acr)
 {
@@ -425,7 +436,7 @@ gm200_acr_load_fwif[] = {
 };
 
 static const struct nvkm_acr_func
-gm200_acr = {
+gm200_acr_0 = {
 	.load = gm200_acr_load_fwif,
 	.unload = gm200_acr_unload_fwif,
 	.wpr_parse = gm200_acr_wpr_parse,
@@ -459,7 +470,8 @@ gm200_acr_load(struct nvkm_acr *acr, int ver, const struct nvkm_acr_fwif *fwif)
 
 static const struct nvkm_acr_fwif
 gm200_acr_fwif[] = {
-	{ 0, gm200_acr_load, &gm200_acr },
+	{  0, gm200_acr_load, &gm200_acr_0 },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm20b.c

@@ -124,6 +124,7 @@ gm20b_acr_load(struct nvkm_acr *acr, int ver, const struct nvkm_acr_fwif *fwif)
 static const struct nvkm_acr_fwif
 gm20b_acr_fwif[] = {
 	{  0, gm20b_acr_load, &gm20b_acr },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c

@@ -271,6 +271,7 @@ gp102_acr_load(struct nvkm_acr *acr, int ver, const struct nvkm_acr_fwif *fwif)
 static const struct nvkm_acr_fwif
 gp102_acr_fwif[] = {
 	{  0, gp102_acr_load, &gp102_acr },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp108.c

@@ -101,6 +101,7 @@ gp108_acr = {
 static const struct nvkm_acr_fwif
 gp108_acr_fwif[] = {
 	{  0, gp102_acr_load, &gp108_acr },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp10b.c

@@ -47,6 +47,7 @@ gp10b_acr = {
 static const struct nvkm_acr_fwif
 gp10b_acr_fwif[] = {
 	{  0, gm20b_acr_load, &gp10b_acr },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/acr/priv.h

@@ -10,6 +10,7 @@ struct nvkm_acr_fwif {
 	const struct nvkm_acr_func *func;
 };
 
+int gm200_acr_nofw(struct nvkm_acr *, int, const struct nvkm_acr_fwif *);
 int gm20b_acr_load(struct nvkm_acr *, int, const struct nvkm_acr_fwif *);
 int gp102_acr_load(struct nvkm_acr *, int, const struct nvkm_acr_fwif *);
 
@@ -29,6 +30,7 @@ struct nvkm_acr_func {
 	void (*fini)(struct nvkm_acr *);
 };
 
+extern const struct nvkm_acr_func gm200_acr;
 int gm200_acr_wpr_parse(struct nvkm_acr *);
 u32 gm200_acr_wpr_layout(struct nvkm_acr *);
 int gm200_acr_wpr_build(struct nvkm_acr *, struct nvkm_acr_lsf *);

drivers/gpu/drm/nouveau/nvkm/subdev/acr/tu102.c

@@ -219,6 +219,7 @@ tu102_acr_load(struct nvkm_acr *acr, int version,
 static const struct nvkm_acr_fwif
 tu102_acr_fwif[] = {
 	{  0, tu102_acr_load, &tu102_acr },
+	{ -1, gm200_acr_nofw, &gm200_acr },
 	{}
 };