ASoC: rt5682-sdw: make regmap cache-only in probe

The RT5682 needs specific attention: there are two regmap in
rt5682_priv struct, one is sdw_regmap which is for IO transfer, and
the other is used for registers control.

We need to set both regmaps when we set cache only. Because if we set
rt5682->sdw_regmap only, rt5682->regmap won't set/get the right value
when it call regmap_write/read(rt5682->sdw_regmap, ...). If we set
rt5682->regmap only, regmap_write(rt5682->sdw_regmap, ...) is used
in rt5682_clock_config which will be called by the ..bus_config ops.
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/20230802153629.53576-4-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5682-sdw.c

@@ -322,6 +322,9 @@ static int rt5682_sdw_init(struct device *dev, struct regmap *regmap,
 		return ret;
 	}
 
+	regcache_cache_only(rt5682->sdw_regmap, true);
+	regcache_cache_only(rt5682->regmap, true);
+
 	/*
 	 * Mark hw_init to false
 	 * HW init will be performed when device reports present
@@ -352,6 +355,11 @@ static int rt5682_io_init(struct device *dev, struct sdw_slave *slave)
 	if (rt5682->hw_init)
 		return 0;
 
+	regcache_cache_only(rt5682->sdw_regmap, false);
+	regcache_cache_only(rt5682->regmap, false);
+	if (rt5682->first_hw_init)
+		regcache_cache_bypass(rt5682->regmap, true);
+
 	/*
 	 * PM runtime is only enabled when a Slave reports as Attached
 	 */
@@ -371,11 +379,6 @@ 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)
@@ -705,6 +708,7 @@ static int __maybe_unused rt5682_dev_suspend(struct device *dev)
 
 	cancel_delayed_work_sync(&rt5682->jack_detect_work);
 
+	regcache_cache_only(rt5682->sdw_regmap, true);
 	regcache_cache_only(rt5682->regmap, true);
 	regcache_mark_dirty(rt5682->regmap);
 
@@ -769,6 +773,7 @@ static int __maybe_unused rt5682_dev_resume(struct device *dev)
 
 regmap_sync:
 	slave->unattach_request = 0;
+	regcache_cache_only(rt5682->sdw_regmap, false);
 	regcache_cache_only(rt5682->regmap, false);
 	regcache_sync(rt5682->regmap);