ASoC: Allow suppression of series updates on wm_hubs devices

Some devices do not support manual updates of the DC servo.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NLiam Girdwood <lrg@ti.com>

sound/soc/codecs/wm_hubs.c

@@ -194,7 +194,7 @@ static int wm8993_put_dc_servo(struct snd_kcontrol *kcontrol,
 
 	/* If we're applying an offset correction then updating the
 	 * callibration would be likely to introduce further offsets. */
-	if (hubs->dcs_codes)
+	if (hubs->dcs_codes || hubs->no_series_update)
 		return ret;
 
 	/* Only need to do this if the outputs are active */

sound/soc/codecs/wm_hubs.h

@@ -24,6 +24,7 @@ struct wm_hubs_data {
 	int dcs_readback_mode;
 	int hp_startup_mode;
 	int series_startup;
+	int no_series_update;
 
 	bool class_w;
 	u16 class_w_dcs;