evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

driver: mfd: Mark RCO calibration registers are volatile

Browse source 
RCO calibration codec registers are read only and they can
be modified at any time during codec operation. Mark them as
volatile so that reads to these registers always happen from
hardware instead of cache.

CRs-Fixed: 974785
Change-Id: I1fb66ca19d0889aa7e21f433f8722af7b527705c
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
This commit is contained in:
Phani Kumar Uppalapati 2016-02-10 15:39:19 -08:00 • committed by David Keitel
parent f019a8590f
commit e539160232
1 changed files with 5 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/mfd/wcd9335-regmap.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -1532,6 +1532,10 @@ static bool wcd9335_is_volatile_register(struct device *dev, unsigned int reg)
reg <= WCD9335_CPE_SS_OUTBOX2_ACK)
return true;
if (reg >= WCD9335_RCO_CAL_OUT_1 &&
reg <= WCD9335_RCO_CAL_OUT_5)
return true;
switch (reg) {
case WCD9335_CPE_SS_INBOX1_TRG:
case WCD9335_CPE_SS_INBOX2_TRG: