drm/nouveau/core: add top plumbing

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

drivers/gpu/drm/nouveau/include/nvkm/core/device.h

@@ -7,6 +7,7 @@ enum nvkm_devidx {
 	NVKM_SUBDEV_PCI,
 	NVKM_SUBDEV_VBIOS,
 	NVKM_SUBDEV_DEVINIT,
+	NVKM_SUBDEV_TOP,
 	NVKM_SUBDEV_IBUS,
 	NVKM_SUBDEV_GPIO,
 	NVKM_SUBDEV_I2C,
@@ -131,6 +132,7 @@ struct nvkm_device {
 	struct nvkm_secboot *secboot;
 	struct nvkm_therm *therm;
 	struct nvkm_timer *timer;
+	struct nvkm_top *top;
 	struct nvkm_volt *volt;
 
 	struct nvkm_engine *bsp;
@@ -200,6 +202,7 @@ struct nvkm_device_chip {
 	int (*secboot )(struct nvkm_device *, int idx, struct nvkm_secboot **);
 	int (*therm   )(struct nvkm_device *, int idx, struct nvkm_therm **);
 	int (*timer   )(struct nvkm_device *, int idx, struct nvkm_timer **);
+	int (*top     )(struct nvkm_device *, int idx, struct nvkm_top **);
 	int (*volt    )(struct nvkm_device *, int idx, struct nvkm_volt **);
 
 	int (*bsp     )(struct nvkm_device *, int idx, struct nvkm_engine **);

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

@@ -0,0 +1,8 @@
+#ifndef __NVKM_TOP_H__
+#define __NVKM_TOP_H__
+#include <core/subdev.h>
+
+struct nvkm_top {
+	struct nvkm_subdev subdev;
+};
+#endif

drivers/gpu/drm/nouveau/nvkm/core/subdev.c

@@ -50,6 +50,7 @@ nvkm_subdev_name[NVKM_SUBDEV_NR] = {
 	[NVKM_SUBDEV_SECBOOT ] = "secboot",
 	[NVKM_SUBDEV_THERM   ] = "therm",
 	[NVKM_SUBDEV_TIMER   ] = "tmr",
+	[NVKM_SUBDEV_TOP     ] = "top",
 	[NVKM_SUBDEV_VOLT    ] = "volt",
 	[NVKM_ENGINE_BSP     ] = "bsp",
 	[NVKM_ENGINE_CE0     ] = "ce0",

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

@@ -2150,6 +2150,7 @@ nvkm_device_subdev(struct nvkm_device *device, int index)
 	_(SECBOOT , device->secboot , &device->secboot->subdev);
 	_(THERM   , device->therm   , &device->therm->subdev);
 	_(TIMER   , device->timer   , &device->timer->subdev);
+	_(TOP     , device->top     , &device->top->subdev);
 	_(VOLT    , device->volt    , &device->volt->subdev);
 #undef _
 	default:
@@ -2604,6 +2605,7 @@ nvkm_device_ctor(const struct nvkm_device_func *func,
 		_(NVKM_SUBDEV_SECBOOT ,  secboot);
 		_(NVKM_SUBDEV_THERM   ,    therm);
 		_(NVKM_SUBDEV_TIMER   ,    timer);
+		_(NVKM_SUBDEV_TOP     ,      top);
 		_(NVKM_SUBDEV_VOLT    ,     volt);
 		_(NVKM_ENGINE_BSP     ,      bsp);
 		_(NVKM_ENGINE_CE0     ,    ce[0]);

drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h

@@ -22,6 +22,7 @@
 #include <subdev/pmu.h>
 #include <subdev/therm.h>
 #include <subdev/timer.h>
+#include <subdev/top.h>
 #include <subdev/volt.h>
 #include <subdev/secboot.h>
 

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

@@ -19,4 +19,5 @@ include $(src)/nvkm/subdev/pmu/Kbuild
 include $(src)/nvkm/subdev/secboot/Kbuild
 include $(src)/nvkm/subdev/therm/Kbuild
 include $(src)/nvkm/subdev/timer/Kbuild
+include $(src)/nvkm/subdev/top/Kbuild
 include $(src)/nvkm/subdev/volt/Kbuild

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

@@ -0,0 +1 @@
+#nvkm-y += nvkm/subdev/top/base.o

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

@@ -0,0 +1,5 @@
+#ifndef __NVKM_TOP_PRIV_H__
+#define __NVKM_TOP_PRIV_H__
+#define nvkm_top(p) container_of((p), struct nvkm_top, subdev)
+#include <subdev/top.h>
+#endif