ASoC: rt5682-sdw: set regcache_cache_only false before reading RT5682_DEVICE_ID

RT5682_DEVICE_ID is a volatile register, we can not read it in cache
only mode.

Fixes: 03f6fc6de919 ("ASoC: rt5682: Add the soundwire support")
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210607222239.582139-14-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt5682-sdw.c b/sound/soc/codecs/rt5682-sdw.c
index 529a85f..5487373 100644 (file)
--- a/sound/soc/codecs/rt5682-sdw.c
+++ b/sound/soc/codecs/rt5682-sdw.c
@@ -400,6 +400,11 @@ static int rt5682_io_init(struct device *dev, struct sdw_slave *slave)
 
        pm_runtime_get_noresume(&slave->dev);
 
+       if (rt5682->first_hw_init) {
+               regcache_cache_only(rt5682->regmap, false);
+               regcache_cache_bypass(rt5682->regmap, true);
+       }
+
        while (loop > 0) {
                regmap_read(rt5682->regmap, RT5682_DEVICE_ID, &val);
                if (val == DEVICE_ID)
@@ -415,11 +420,6 @@ static int rt5682_io_init(struct device *dev, struct sdw_slave *slave)
                goto err_nodev;
        }
 
-       if (rt5682->first_hw_init) {
-               regcache_cache_only(rt5682->regmap, false);
-               regcache_cache_bypass(rt5682->regmap, true);
-       }
-
        rt5682_calibrate(rt5682);
 
        if (rt5682->first_hw_init) {