drm/nv50: supply encoder disable() hook for SOR outputs

Allows us to remove a driver hack that used to be necessary to disable
encoders in certain situations before setting up a mode.  The DRM has
better knowledge of when this is needed than the driver does.

This fixes a number of display switching issues.

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

1 files changed, 0 insertions, 31 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c
index b4e4a3b05ea..fb3ed5d80aa 100644
--- a/drivers/gpu/drm/nouveau/nv50_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv50_crtc.c
@@ -440,40 +440,9 @@ nv50_crtc_prepare(struct drm_crtc *crtc)
 {
 	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
-	struct drm_encoder *encoder;
-	uint32_t dac = 0, sor = 0;
 
 	NV_DEBUG_KMS(dev, "index %d\n", nv_crtc->index);
 
-	/* Disconnect all unused encoders. */
-	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
-
-		if (!drm_helper_encoder_in_use(encoder))
-			continue;
-
-		if (nv_encoder->dcb->type == OUTPUT_ANALOG ||
-		    nv_encoder->dcb->type == OUTPUT_TV)
-			dac |= (1 << nv_encoder->or);
-		else
-			sor |= (1 << nv_encoder->or);
-	}
-
-	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
-
-		if (nv_encoder->dcb->type == OUTPUT_ANALOG ||
-		    nv_encoder->dcb->type == OUTPUT_TV) {
-			if (dac & (1 << nv_encoder->or))
-				continue;
-		} else {
-			if (sor & (1 << nv_encoder->or))
-				continue;
-		}
-
-		nv_encoder->disconnect(nv_encoder);
-	}
-
 	nv50_crtc_blank(nv_crtc, true);
 }