ALSA: hda: cs35l56: Exit cache-only after cs35l56_wait_for_firmware_boot()

Adds calls to disable regmap cache-only after a successful return from
cs35l56_wait_for_firmware_boot().

This is to prepare for a change in the shared ASoC module that will
leave regmap in cache-only mode after cs35l56_system_reset(). This is
to prevent register accesses going to the hardware while it is
rebooting.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://msgid.link/r/20240408101803.43183-3-rf@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/pci/hda/cs35l56_hda.c

@@ -644,6 +644,8 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56)
 		ret = cs35l56_wait_for_firmware_boot(&cs35l56->base);
 		if (ret)
 			goto err_powered_up;
+
+		regcache_cache_only(cs35l56->base.regmap, false);
 	}
 
 	/* Disable auto-hibernate so that runtime_pm has control */
@@ -1002,6 +1004,8 @@ int cs35l56_hda_common_probe(struct cs35l56_hda *cs35l56, int hid, int id)
 	if (ret)
 		goto err;
 
+	regcache_cache_only(cs35l56->base.regmap, false);
+
 	ret = cs35l56_set_patch(&cs35l56->base);
 	if (ret)
 		goto err;