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Commit 52b8b3ff authored by Vatsal Bucha's avatar Vatsal Bucha Committed by Gerrit - the friendly Code Review server
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ASoC: wcd937x_slave: Add retry while getting logical addr for wcd937x slave 



Add retry while getting logical addr for wcd937x slave.

Change-Id: Iff3f6a071c13f8bdccc72da69e95432be2d4f90a
Signed-off-by: default avatarVatsal Bucha <vbucha@codeaurora.org>
parent 6fec0645

asoc/codecs/wcd937x/wcd937x_slave.c

+11 −1
Original line number Diff line number Diff line
@@ -9,6 +9,8 @@ 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.

 */



#include <linux/module.h>
@@ -18,6 +20,8 @@ 
#include <linux/kernel.h>

#include <linux/component.h>

#include <soc/soundwire.h>

#include <linux/delay.h>

#define SWR_MAX_RETRY 5



struct wcd937x_slave_priv {

	struct swr_device *swr_slave;
@@ -30,6 +34,7 @@ static int wcd937x_slave_bind(struct device *dev, 
	struct wcd937x_slave_priv *wcd937x_slave = NULL;

	uint8_t devnum = 0;

	struct swr_device *pdev = to_swr_device(dev);

	int retry = SWR_MAX_RETRY;



	if (pdev == NULL) {

		dev_err(dev, "%s: pdev is NULL\n", __func__);
@@ -45,7 +50,12 @@ static int wcd937x_slave_bind(struct device *dev, 


	wcd937x_slave->swr_slave = pdev;



	do {

		/* Add delay for soundwire enumeration */

		usleep_range(100, 110);

		ret = swr_get_logical_dev_num(pdev, pdev->addr, &devnum);

	} while (ret && --retry);



	if (ret) {

		dev_dbg(&pdev->dev,

				"%s get devnum %d for dev addr %lx failed\n",