drm/nouveau/dp: make dp dpms function common, call from sor code instead

GF119 will use this too.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_dp.c

@@ -475,6 +475,29 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate,
 	return true;
 }
 
+void
+nouveau_dp_dpms(struct drm_encoder *encoder, int mode, u32 datarate,
+		struct dp_train_func *func)
+{
+	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+	struct nouveau_i2c_chan *auxch;
+	u8 status;
+
+	auxch = nouveau_i2c_find(encoder->dev, nv_encoder->dcb->i2c_index);
+	if (!auxch)
+		return;
+
+	if (mode == DRM_MODE_DPMS_ON)
+		status = DP_SET_POWER_D0;
+	else
+		status = DP_SET_POWER_D3;
+
+	nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
+
+	if (mode == DRM_MODE_DPMS_ON)
+		nouveau_dp_link_train(encoder, datarate, func);
+}
+
 bool
 nouveau_dp_detect(struct drm_encoder *encoder)
 {

drivers/gpu/drm/nouveau/nouveau_encoder.h

@@ -90,7 +90,7 @@ get_slave_funcs(struct drm_encoder *enc)
 int nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr,
 		     uint8_t *data, int data_nr);
 bool nouveau_dp_detect(struct drm_encoder *);
-bool nouveau_dp_link_train(struct drm_encoder *, u32 datarate,
+void nouveau_dp_dpms(struct drm_encoder *, int mode, u32 datarate,
 		     struct dp_train_func *);
 u8 *nouveau_dp_bios_data(struct drm_device *, struct dcb_entry *, u8 **);
 

drivers/gpu/drm/nouveau/nv50_sor.c

@@ -304,27 +304,13 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
 	}
 
 	if (nv_encoder->dcb->type == OUTPUT_DP) {
-		struct nouveau_i2c_chan *auxch;
-
-		auxch = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
-		if (!auxch)
-			return;
-
-		if (mode == DRM_MODE_DPMS_ON) {
 		struct dp_train_func func = {
 			.link_set = nv50_sor_dp_link_set,
 			.train_set = nv50_sor_dp_train_set,
 			.train_adj = nv50_sor_dp_train_adj
 		};
-			u32 rate = nv_encoder->dp.datarate;
-			u8 status = DP_SET_POWER_D0;
 
-			nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
-			nouveau_dp_link_train(encoder, rate, &func);
-		} else {
-			u8 status = DP_SET_POWER_D3;
-			nouveau_dp_auxch(auxch, 8, DP_SET_POWER, &status, 1);
-		}
+		nouveau_dp_dpms(encoder, mode, nv_encoder->dp.datarate, &func);
 	}
 }