ASoC: tas2781: fixed register access error when switching to other chips

fixed register access error when switching to other tas2781 -- refresh the page
inside regmap on the switched tas2781

Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Link: https://lore.kernel.org/r/20230817093257.951-1-shenghao-ding@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/tas2781-comlib.c b/sound/soc/codecs/tas2781-comlib.c
index a88c6c2..ffb26e4 100644 (file)
--- a/sound/soc/codecs/tas2781-comlib.c
+++ b/sound/soc/codecs/tas2781-comlib.c
@@ -57,16 +57,17 @@ static int tasdevice_change_chn_book(struct tasdevice_priv *tas_priv,
 
                if (client->addr != tasdev->dev_addr) {
                        client->addr = tasdev->dev_addr;
-                       if (tasdev->cur_book == book) {
-                               ret = regmap_write(map,
-                                       TASDEVICE_PAGE_SELECT, 0);
-                               if (ret < 0) {
-                                       dev_err(tas_priv->dev, "%s, E=%d\n",
-                                               __func__, ret);
-                                       goto out;
-                               }
+                       /* All tas2781s share the same regmap, clear the page
+                        * inside regmap once switching to another tas2781.
+                        * Register 0 at any pages and any books inside tas2781
+                        * is the same one for page-switching.
+                        */
+                       ret = regmap_write(map, TASDEVICE_PAGE_SELECT, 0);
+                       if (ret < 0) {
+                               dev_err(tas_priv->dev, "%s, E=%d\n",
+                                       __func__, ret);
+                               goto out;
                        }
-                       goto out;
                }
 
                if (tasdev->cur_book != book) {