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Bugfix: crash due to device probing order

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This commit is contained in:
peter.yang 2018-01-29 19:14:28 +08:00
parent 780db6f6ab
commit d8b60f1116
1 changed files with 24 additions and 10 deletions
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34
ac108.c
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@ -8,7 +8,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#undef DEBUG
#define DEBUG
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
@ -26,6 +26,9 @@
#include <sound/tlv.h>
#include "ac108.h"
#define _USE_CAPTURE 0
#define _MASTER_INDEX 1
/**
* TODO:
* 1, add PM API: ac108_suspend,ac108_resume
@ -885,8 +888,7 @@ static int ac108_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_h
unsigned bclkdiv;
u8 r;
dev_dbg(dai->dev, "%s() stream=%d\n",
__FUNCTION__, substream->stream);
dev_dbg(dai->dev, "%s() stream=%d\n", __func__, substream->stream);
/* nothing should be done when it isn't capturing stream. */
if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) {
@ -1063,6 +1065,7 @@ static int ac108_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) {
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM: /*AC108 Master*/
dev_dbg(dai->dev, "AC108 set to work as Master\n");
#if 0
/**
* 0x30:chip is master mode ,BCLK & LRCK output
*/
@ -1073,6 +1076,7 @@ static int ac108_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) {
ac108_update_bits(I2S_CTRL, 0x3 << LRCK_IOEN, 0x0 << LRCK_IOEN, ac108->i2c[i]);
}
break;
#endif
case SND_SOC_DAIFMT_CBS_CFS: /*AC108 Slave*/
dev_dbg(dai->dev, "AC108 set to work as Slave\n");
/**
@ -1266,6 +1270,7 @@ static const struct snd_soc_dai_ops ac108_dai_ops = {
static struct snd_soc_dai_driver ac108_dai0 = {
.name = "ac108-codec0",
#if _USE_CAPTURE
.playback = {
.stream_name = "Playback",
.channels_min = 1,
@ -1273,6 +1278,7 @@ static struct snd_soc_dai_driver ac108_dai0 = {
.rates = AC108_RATES,
.formats = AC108_FORMATS,
},
#endif
.capture = {
.stream_name = "Capture",
.channels_min = 1,
@ -1285,6 +1291,7 @@ static struct snd_soc_dai_driver ac108_dai0 = {
static struct snd_soc_dai_driver ac108_dai1 = {
.name = "ac108-codec1",
#if _USE_CAPTURE
.playback = {
.stream_name = "Playback",
.channels_min = 1,
@ -1292,6 +1299,7 @@ static struct snd_soc_dai_driver ac108_dai1 = {
.rates = AC108_RATES,
.formats = AC108_FORMATS,
},
#endif
.capture = {
.stream_name = "Capture",
.channels_min = 1,
@ -1304,6 +1312,7 @@ static struct snd_soc_dai_driver ac108_dai1 = {
static struct snd_soc_dai_driver ac108_dai2 = {
.name = "ac108-codec2",
#if _USE_CAPTURE
.playback = {
.stream_name = "Playback",
.channels_min = 1,
@ -1311,6 +1320,7 @@ static struct snd_soc_dai_driver ac108_dai2 = {
.rates = AC108_RATES,
.formats = AC108_FORMATS,
},
#endif
.capture = {
.stream_name = "Capture",
.channels_min = 1,
@ -1323,6 +1333,7 @@ static struct snd_soc_dai_driver ac108_dai2 = {
static struct snd_soc_dai_driver ac108_dai3 = {
.name = "ac108-codec3",
#if _USE_CAPTURE
.playback = {
.stream_name = "Playback",
.channels_min = 1,
@ -1330,6 +1341,7 @@ static struct snd_soc_dai_driver ac108_dai3 = {
.rates = AC108_RATES,
.formats = AC108_FORMATS,
},
#endif
.capture = {
.stream_name = "Capture",
.channels_min = 1,
@ -1348,16 +1360,16 @@ static struct snd_soc_dai_driver *ac108_dai[] = {
};
static int ac108_add_widgets(struct snd_soc_codec *codec) {
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
// struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
snd_soc_add_codec_controls(codec, ac108_snd_controls,
ARRAY_SIZE(ac108_snd_controls));
#if 0
snd_soc_dapm_new_controls(dapm, ac108_dapm_widgets,
ARRAY_SIZE(ac108_dapm_widgets));
snd_soc_dapm_add_routes(dapm, ac108_dapm_routes, ARRAY_SIZE(ac108_dapm_routes));
#endif
return 0;
}
@ -1508,15 +1520,17 @@ static int ac108_i2c_probe(struct i2c_client *i2c,
pr_err(" ac108 I2S data protocol type :%d\n", ac108->data_protocol);
ac108->i2c[i2c_id->driver_data] = i2c;
if (ac108->codec_index == 0) {
ret = snd_soc_register_codec(&i2c->dev, &ac108_soc_codec_driver, ac108_dai[i2c_id->driver_data], 1);
ac108->codec_index++;
/* we need i2c[0] && i2c[1], codec bind with i2c[_MASTER_INDEX] */
if (ac108->codec_index == 2) {
ret = snd_soc_register_codec(&ac108->i2c[_MASTER_INDEX]->dev, &ac108_soc_codec_driver,
ac108_dai[_MASTER_INDEX], 1);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to register ac108 codec: %d\n", ret);
}
}
ac108->codec_index++;
ret = sysfs_create_group(&i2c->dev.kobj, &ac108_debug_attr_group);
if (ret) {
pr_err("failed to create attr group\n");