From 928adf0ebc7893ee228a06479b1b797779fd41a9 Mon Sep 17 00:00:00 2001
From: Stefan Binding <sbinding@opensource.cirrus.com>
Date: Wed, 11 Aug 2021 19:56:51 +0100
Subject: [PATCH] ALSA: hda/cs8409: Use timeout rather than retries for I2C transaction waits
Git-commit: 928adf0ebc7893ee228a06479b1b797779fd41a9
Patch-mainline: v5.15-rc1
References: bsc#1192354

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210811185654.6837-25-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/pci/hda/patch_cs8409.c | 16 +++-------------
 sound/pci/hda/patch_cs8409.h |  2 ++
 2 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index 897c48140d8b..9f6c51a5835a 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -140,24 +140,14 @@ static void cs8409_enable_i2c_clock(struct hda_codec *codec)
  * @codec: the codec instance
  *
  * Wait for I2C transaction to complete.
- * Return -1 if transaction wait times out.
+ * Return -ETIMEDOUT if transaction wait times out.
  */
 static int cs8409_i2c_wait_complete(struct hda_codec *codec)
 {
-	int repeat = 5;
 	unsigned int retval;
 
-	do {
-		retval = cs8409_vendor_coef_get(codec, CS8409_I2C_STS);
-		if ((retval & 0x18) != 0x18) {
-			usleep_range(2000, 4000);
-			--repeat;
-		} else
-			return 0;
-
-	} while (repeat);
-
-	return -1;
+	return read_poll_timeout(cs8409_vendor_coef_get, retval, retval & 0x18,
+		CS42L42_I2C_SLEEP_US, CS42L42_I2C_TIMEOUT_US, false, codec, CS8409_I2C_STS);
 }
 
 /**
diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h
index 2208be2ffad1..71dbbd8e2f3b 100644
--- a/sound/pci/hda/patch_cs8409.h
+++ b/sound/pci/hda/patch_cs8409.h
@@ -231,6 +231,8 @@ enum cs8409_coefficient_index_registers {
 #define CS42L42_HSTYPE_MASK			(0x03)
 #define CS42L42_JACK_INSERTED			(0x0C)
 #define CS42L42_JACK_REMOVED			(0x00)
+#define CS42L42_I2C_TIMEOUT_US			(20000)
+#define CS42L42_I2C_SLEEP_US			(2000)
 
 /* Dell BULLSEYE / WARLOCK / CYBORG Specific Definitions */
 
-- 
2.26.2