drm/nouveau: remove unused nouveau_channel_idle() function

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

2 files changed, 0 insertions, 42 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
index 4f378b68fe7b..d1c7f8c911c7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_channel.c
+++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
@@ -235,47 +235,6 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
         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 9181eaefe918..4087a9a20ba9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -745,7 +745,6 @@ extern int  nouveau_channel_alloc(struct drm_device *dev,
                                   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 *);