ASoC: wm_adsp: Ensure set controls are synced on each boot

Rename `dirty' to `set' as it is a bit more descriptive.  A set
control is any control that has been set by the user.  We need to ensure
that everytime we boot the DSP we sync out any controls that were
set.

We could at some point start keeping track of the default values of
the controls to suppress some of the device I/O.
Signed-off-by: NDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm_adsp.c

@@ -242,7 +242,7 @@ struct wm_coeff_ctl {
 	struct list_head list;
 	void *cache;
 	size_t len;
-	unsigned int dirty:1;
+	unsigned int set:1;
 	struct snd_kcontrol *kcontrol;
 };
 
@@ -424,7 +424,7 @@ static int wm_coeff_put(struct snd_kcontrol *kcontrol,
 	memcpy(ctl->cache, p, ctl->len);
 
 	if (!ctl->enabled) {
-		ctl->dirty = 1;
+		ctl->set = 1;
 		return 0;
 	}
 
@@ -760,7 +760,7 @@ static int wm_coeff_init_control_caches(struct wm_coeff *wm_coeff)
 
 	list_for_each_entry(ctl, &wm_coeff->ctl_list,
 			    list) {
-		if (!ctl->enabled || ctl->dirty)
+		if (!ctl->enabled || ctl->set)
 			continue;
 		ret = wm_coeff_read_control(ctl->kcontrol,
 					    ctl->cache,
@@ -781,13 +781,12 @@ static int wm_coeff_sync_controls(struct wm_coeff *wm_coeff)
 			    list) {
 		if (!ctl->enabled)
 			continue;
-		if (ctl->dirty) {
+		if (ctl->set) {
 			ret = wm_coeff_write_control(ctl->kcontrol,
 						     ctl->cache,
 						     ctl->len);
 			if (ret < 0)
 				return ret;
-			ctl->dirty = 0;
 		}
 	}
 
@@ -864,7 +863,7 @@ static int wm_adsp_create_control(struct snd_soc_codec *codec,
 		goto err_ctl;
 	}
 	ctl->enabled = 1;
-	ctl->dirty = 0;
+	ctl->set = 0;
 	ctl->ops.xget = wm_coeff_get;
 	ctl->ops.xput = wm_coeff_put;
 	ctl->card = codec->card->snd_card;
@@ -1434,12 +1433,12 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w,
 		if (ret != 0)
 			goto err;
 
-		/* Initialize caches for enabled and non-dirty controls */
+		/* Initialize caches for enabled and unset controls */
 		ret = wm_coeff_init_control_caches(dsp->wm_coeff);
 		if (ret != 0)
 			goto err;
 
-		/* Sync dirty controls */
+		/* Sync set controls */
 		ret = wm_coeff_sync_controls(dsp->wm_coeff);
 		if (ret != 0)
 			goto err;
@@ -1591,12 +1590,12 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
 		if (ret != 0)
 			goto err;
 
-		/* Initialize caches for enabled and non-dirty controls */
+		/* Initialize caches for enabled and unset controls */
 		ret = wm_coeff_init_control_caches(dsp->wm_coeff);
 		if (ret != 0)
 			goto err;
 
-		/* Sync dirty controls */
+		/* Sync set controls */
 		ret = wm_coeff_sync_controls(dsp->wm_coeff);
 		if (ret != 0)
 			goto err;