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[08/10,SRU,M] ALSA: hda: cs35l41: Do not unload firmware before reset in system suspend

Message ID 20231122063541.11346-9-chris.chiu@canonical.com
State New
Headers show
Series Fix system suspend problem for Cirrus CS35L41 HDA codec on HP ZBook Fury 16 G9 | expand

Commit Message

Chris Chiu Nov. 22, 2023, 6:35 a.m. UTC 
From: Stefan Binding <sbinding@opensource.cirrus.com>

BugLink: https://bugs.launchpad.net/bugs/2042060

Given the part is about to reset due to system suspend, and we are
already in hibernate, there is no need to wake up the amp, just to get
it ready to be reset. We just need to ensure cs_dsp is ready for reset
by resetting the states.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231026150558.2105827-7-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
(cherry picked from commit 33790d1f039114a829433b89fc55a0d781d38d62)
Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
---
 sound/pci/hda/cs35l41_hda.c | 33 ++++-----------------------------
 1 file changed, 4 insertions(+), 29 deletions(-)
diff mbox series

Patch

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index be74b3c5547b..3c88f71d97f4 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -695,41 +695,16 @@  int cs35l41_verify_id(struct cs35l41_hda *cs35l41, unsigned int *regid, unsigned
 
 static int cs35l41_ready_for_reset(struct cs35l41_hda *cs35l41)
 {
-	int ret = 0;
-
 	mutex_lock(&cs35l41->fw_mutex);
 	if (cs35l41->firmware_running) {
-
-		regcache_cache_only(cs35l41->regmap, false);
-
-		ret = cs35l41_exit_hibernate(cs35l41->dev, cs35l41->regmap);
-		if (ret) {
-			dev_warn(cs35l41->dev, "Unable to exit Hibernate.");
-			goto err;
-		}
-
-		/* Test key needs to be unlocked to allow the OTP settings to re-apply */
-		cs35l41_test_key_unlock(cs35l41->dev, cs35l41->regmap);
-		ret = regcache_sync(cs35l41->regmap);
-		cs35l41_test_key_lock(cs35l41->dev, cs35l41->regmap);
-		if (ret) {
-			dev_err(cs35l41->dev, "Failed to restore register cache: %d\n", ret);
-			goto err;
-		}
-
-		if (cs35l41->hw_cfg.bst_type == CS35L41_EXT_BOOST)
-			cs35l41_init_boost(cs35l41->dev, cs35l41->regmap, &cs35l41->hw_cfg);
-
-		cs35l41_shutdown_dsp(cs35l41);
-		cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type);
+		cs35l41->cs_dsp.running = false;
+		cs35l41->cs_dsp.booted = false;
+		cs35l41->firmware_running = false;
 	}
-err:
-	regcache_cache_only(cs35l41->regmap, true);
 	regcache_mark_dirty(cs35l41->regmap);
-
 	mutex_unlock(&cs35l41->fw_mutex);
 
-	return ret;
+	return 0;
 }
 
 static int cs35l41_system_suspend_prep(struct device *dev)