drm/nouveau/ibus/gm204: split implementation from gk104

GM20x doesn't require the priv ring timeout bumps that GK/GM10x have.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/subdev/ibus.h

@@ -6,4 +6,5 @@ int gf100_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
 int gf117_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
 int gk104_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
 int gk20a_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
+int gm204_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

@@ -1973,7 +1973,7 @@ nv124_chipset = {
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gm204_i2c_new,
-	.ibus = gk104_ibus_new,
+	.ibus = gm204_ibus_new,
 	.imem = nv50_instmem_new,
 	.ltc = gm107_ltc_new,
 	.mc = gk20a_mc_new,
@@ -2004,7 +2004,7 @@ nv126_chipset = {
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gm204_i2c_new,
-	.ibus = gk104_ibus_new,
+	.ibus = gm204_ibus_new,
 	.imem = nv50_instmem_new,
 	.ltc = gm107_ltc_new,
 	.mc = gk20a_mc_new,

drivers/gpu/drm/nouveau/nvkm/subdev/ibus/Kbuild

@@ -2,3 +2,4 @@ nvkm-y += nvkm/subdev/ibus/gf100.o
 nvkm-y += nvkm/subdev/ibus/gf117.o
 nvkm-y += nvkm/subdev/ibus/gk104.o
 nvkm-y += nvkm/subdev/ibus/gk20a.o
+nvkm-y += nvkm/subdev/ibus/gm204.o

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

@@ -21,7 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include <subdev/ibus.h>
+#include "priv.h"
 
 static void
 gk104_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
@@ -56,7 +56,7 @@ gk104_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
 	nvkm_mask(device, 0x128128 + (i * 0x0800), 0x00000200, 0x00000000);
 }
 
-static void
+void
 gk104_ibus_intr(struct nvkm_subdev *ibus)
 {
 	struct nvkm_device *device = ibus->device;

drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gm204.c

+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+static const struct nvkm_subdev_func
+gm204_ibus = {
+	.intr = gk104_ibus_intr,
+};
+
+int
+gm204_ibus_new(struct nvkm_device *device, int index,
+	       struct nvkm_subdev **pibus)
+{
+	struct nvkm_subdev *ibus;
+	if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&gm204_ibus, device, index, 0, ibus);
+	return 0;
+}

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

@@ -4,4 +4,5 @@
 #include <subdev/ibus.h>
 
 void gf100_ibus_intr(struct nvkm_subdev *);
+void gk104_ibus_intr(struct nvkm_subdev *);
 #endif