Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-12-29 01:05:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ASoC: rt1015: add delay to fix pop noise from speaker

Browse Source 
Add delay to fix pop noise from speaker.

Signed-off-by: Jack Yu <jack.yu@realtek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20201105030804.31115-1-jack.yu@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jack Yu 2020-11-05 11:08:04 +08:00 committed by Mark Brown
parent f9d7c6eb23
commit 93bd813c17
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
4 changed files with 43 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/devicetree/bindings/sound/rt1015.txt
View File

@ -8,10 +8,16 @@ Required properties:
- reg : The I2C address of the device.
Optional properties:
- realtek,power-up-delay-ms
Set a delay time for flush work to be completed,
this value is adjustable depending on platform.
Example:
rt1015: codec@28 {
compatible = "realtek,rt1015";
reg = <0x28>;
realtek,power-up-delay-ms = <50>;
};

15
include/sound/rt1015.h Normal file
View File

@ -0,0 +1,15 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/sound/rt1015.h -- Platform data for RT1015
*
* Copyright 2020 Realtek Microelectronics
*/
#ifndef __LINUX_SND_RT1015_H
#define __LINUX_SND_RT1015_H
struct rt1015_platform_data {
unsigned int power_up_delay_ms;
};
#endif

20
sound/soc/codecs/rt1015.c
View File

@ -27,10 +27,15 @@
#include <sound/soc-dapm.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/rt1015.h>
#include "rl6231.h"
#include "rt1015.h"
static const struct rt1015_platform_data i2s_default_platform_data = {
.power_up_delay_ms = 50,
};
static const struct reg_default rt1015_reg[] = {
{ 0x0000, 0x0000 },
{ 0x0004, 0xa000 },
@ -650,6 +655,7 @@ static int rt1015_amp_drv_event(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_POST_PMU:
if (rt1015->hw_config == RT1015_HW_28)
schedule_delayed_work(&rt1015->flush_work, msecs_to_jiffies(10));
msleep(rt1015->pdata.power_up_delay_ms);
break;
default:
break;
@ -1067,9 +1073,16 @@ static struct acpi_device_id rt1015_acpi_match[] = {
MODULE_DEVICE_TABLE(acpi, rt1015_acpi_match);
#endif
static void rt1015_parse_dt(struct rt1015_priv *rt1015, struct device *dev)
{
device_property_read_u32(dev, "realtek,power-up-delay-ms",
&rt1015->pdata.power_up_delay_ms);
}
static int rt1015_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct rt1015_platform_data *pdata = dev_get_platdata(&i2c->dev);
struct rt1015_priv *rt1015;
int ret;
unsigned int val;
@ -1081,6 +1094,13 @@ static int rt1015_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, rt1015);
rt1015->pdata = i2s_default_platform_data;
if (pdata)
rt1015->pdata = *pdata;
else
rt1015_parse_dt(rt1015, &i2c->dev);
rt1015->regmap = devm_regmap_init_i2c(i2c, &rt1015_regmap);
if (IS_ERR(rt1015->regmap)) {
ret = PTR_ERR(rt1015->regmap);

2
sound/soc/codecs/rt1015.h
View File

@ -12,6 +12,7 @@
#ifndef __RT1015_H__
#define __RT1015_H__
#include <sound/rt1015.h>
#define RT1015_DEVICE_ID_VAL 0x1011
#define RT1015_DEVICE_ID_VAL2 0x1015
@ -380,6 +381,7 @@ enum {
struct rt1015_priv {
struct snd_soc_component *component;
struct rt1015_platform_data pdata;
struct regmap *regmap;
int sysclk;
int sysclk_src;