drm/nouveau: remove unused nouveau_channel_idle() function
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
index 4f378b6..d1c7f8c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_channel.c
+++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
@@ -235,47 +235,6 @@
return 0;
}
-int
-nouveau_channel_idle(struct nouveau_channel *chan)
-{
- struct drm_device *dev = chan->dev;
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_engine *engine = &dev_priv->engine;
- uint32_t caches;
- int idle;
-
- if (!chan) {
- NV_ERROR(dev, "no channel...\n");
- return 1;
- }
-
- caches = nv_rd32(dev, NV03_PFIFO_CACHES);
- nv_wr32(dev, NV03_PFIFO_CACHES, caches & ~1);
-
- if (engine->fifo.channel_id(dev) != chan->id) {
- struct nouveau_gpuobj *ramfc =
- chan->ramfc ? chan->ramfc->gpuobj : NULL;
-
- if (!ramfc) {
- NV_ERROR(dev, "No RAMFC for channel %d\n", chan->id);
- return 1;
- }
-
- engine->instmem.prepare_access(dev, false);
- if (nv_ro32(dev, ramfc, 0) != nv_ro32(dev, ramfc, 1))
- idle = 0;
- else
- idle = 1;
- engine->instmem.finish_access(dev);
- } else {
- idle = (nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET) ==
- nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT));
- }
-
- nv_wr32(dev, NV03_PFIFO_CACHES, caches);
- return idle;
-}
-
/* stops a fifo */
void
nouveau_channel_free(struct nouveau_channel *chan)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 9181eae..4087a9a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -745,7 +745,6 @@
struct drm_file *file_priv,
uint32_t fb_ctxdma, uint32_t tt_ctxdma);
extern void nouveau_channel_free(struct nouveau_channel *);
-extern int nouveau_channel_idle(struct nouveau_channel *chan);
/* nouveau_object.c */
extern int nouveau_gpuobj_early_init(struct drm_device *);