Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ASoC: wcd937x: Fix headset record pop during SSR

Browse source 
Pop is heard with special headset with silence record
during SSR. Resolve pop by allowing sufficient time for
wcd937x_reset post SSR and again initialize registers
post SSR.

Change-Id: I80e70a98a72b247dca878673a30651647b676659
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
This commit is contained in:
Vatsal Bucha 2020-02-10 16:53:58 +05:30
parent 39e62ec486
commit 018dbd2d4c
1 changed files with 4 additions and 5 deletions

9
asoc/codecs/wcd937x/wcd937x.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
*/
#include <linux/module.h>
@ -1587,14 +1587,13 @@ static int wcd937x_event_notify(struct notifier_block *block,
break;
case BOLERO_WCD_EVT_SSR_UP:
wcd937x_reset(wcd937x->dev);
/* allow reset to take effect */
usleep_range(10000, 10010);
wcd937x_get_logical_addr(wcd937x->tx_swr_dev);
wcd937x_get_logical_addr(wcd937x->rx_swr_dev);
wcd937x_init_reg(component);
regcache_mark_dirty(wcd937x->regmap);
regcache_sync(wcd937x->regmap);
/* Enable surge protection */
snd_soc_component_update_bits(component,
WCD937X_HPH_SURGE_HPHLR_SURGE_EN,
0xFF, 0xD9);
/* Initialize MBHC module */
mbhc = &wcd937x->mbhc->wcd_mbhc;
ret = wcd937x_mbhc_post_ssr_init(wcd937x->mbhc, component);