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ASoC: wsa881x: Add cache-always mode for sdm660

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As WSA881x registers fails to read sometimes on
sdm660 internal codec, use cache-always mode
to avoid speaker mute.

CRs-Fixed: 1117406
Change-Id: I9742af37c3e64efb46fc9b3cef616f685b7f01a8
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam 2017-02-01 10:37:19 +05:30
parent 42e1251b38
commit b3f17f8fe8
4 changed files with 19 additions and 4 deletions
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9
Documentation/devicetree/bindings/sound/wcd_codec.txt
View file

@ -1,4 +1,6 @@
WCD audio CODEC
* Qualcomm Technologies WCD Audio Codec
This node models the Qualcomm Technologies Audio HW WCD Codecs
Required properties:
@ -512,6 +514,10 @@ Required properties:
which is also existing driver WSA881x that represents
soundwire slave devices.
Optional Properties:
- qcom,cache-always : Boolean. This property is used in WSA slave
device to use cacheable for all registers.
Example:
msm_sdw_codec: qcom,msm-sdw-codec@152c1000 {
@ -529,6 +535,7 @@ msm_sdw_codec: qcom,msm-sdw-codec@152c1000 {
compatible = "qcom,wsa881x";
reg = <0x00 0x20170212>;
qcom,spkr-sd-n-gpio = <&tlmm 80 0>;
qcom,cache-always;
};
};
};

5
sound/soc/codecs/wsa881x-regmap.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2017, 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
@ -216,6 +216,9 @@ static bool wsa881x_readable_register(struct device *dev, unsigned int reg)
static bool wsa881x_volatile_register(struct device *dev, unsigned int reg)
{
if (cache_always)
return false;
switch (reg) {
case WSA881X_CHIP_ID0:
case WSA881X_CHIP_ID1:

6
sound/soc/codecs/wsa881x.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2017, 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
@ -78,6 +78,7 @@ enum {
WSA881X_DEV_UP,
};
bool cache_always;
/*
* Private data Structure for wsa881x. All parameters related to
* WSA881X codec needs to be defined here.
@ -1227,6 +1228,9 @@ static int wsa881x_swr_probe(struct swr_device *pdev)
if (ret)
goto err;
}
cache_always = of_property_read_bool(pdev->dev.of_node,
"qcom,cache-always");
wsa881x_gpio_ctrl(wsa881x, true);
wsa881x->state = WSA881X_DEV_UP;

3
sound/soc/codecs/wsa881x.h
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
/* Copyright (c) 2015-2017, 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
@ -20,6 +20,7 @@
#define WSA881X_MAX_SWR_PORTS 4
extern bool cache_always;
extern int wsa881x_set_channel_map(struct snd_soc_codec *codec, u8 *port,
u8 num_port, unsigned int *ch_mask,
unsigned int *ch_rate);