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ASoC: max98383: fix i2c probe failure 

Added reset_gpio configuration for i2c probe successfully.
If not,i2c address can't be found rightly.

Error information:
max98373 3-0031: Failed to read: 0x21FF

Fixed:
[3.761299@3] max98373 3-0031: MAX98373 revisionID: 0x43
[3.828911@3] asoc-aml-card auge_sound: max98373-aif1 <-> TDM-B mapping ok

Signed-off-by: fengchunguo <chunguo.feng@amlogic.com>
Link: https://lore.kernel.org/r/20190715095556.1614-1-chunguo.feng@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
fengchunguo 2019-07-15 17:55:56 +08:00 committed by Mark Brown
parent 6d19d8a3ce
commit 96cd3b97bf
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 31 additions and 4 deletions
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34
sound/soc/codecs/max98373.c
View File

@ -12,6 +12,7 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <sound/tlv.h>
#include "max98373.h"
@ -895,6 +896,17 @@ static void max98373_slot_config(struct i2c_client *i2c,
else
max98373->i_slot = 1;
max98373->reset_gpio = of_get_named_gpio(dev->of_node,
"maxim,reset-gpio", 0);
if (!gpio_is_valid(max98373->reset_gpio)) {
dev_err(dev, "Looking up %s property in node %s failed %d\n",
"maxim,reset-gpio", dev->of_node->full_name,
max98373->reset_gpio);
} else {
dev_dbg(dev, "maxim,reset-gpio=%d",
max98373->reset_gpio);
}
if (!device_property_read_u32(dev, "maxim,spkfb-slot-no", &value))
max98373->spkfb_slot = value & 0xF;
else
@ -923,7 +935,6 @@ static int max98373_i2c_probe(struct i2c_client *i2c,
else
max98373->interleave_mode = false;
/* regmap initialization */
max98373->regmap
= devm_regmap_init_i2c(i2c, &max98373_regmap);
@ -934,6 +945,24 @@ static int max98373_i2c_probe(struct i2c_client *i2c,
return ret;
}
/* voltage/current slot & gpio configuration */
max98373_slot_config(i2c, max98373);
/* Power on device */
if (gpio_is_valid(max98373->reset_gpio)) {
ret = gpio_request(max98373->reset_gpio, "MAX98373_RESET");
if (ret) {
dev_err(&i2c->dev, "%s: Failed to request gpio %d\n",
__func__, max98373->reset_gpio);
gpio_free(max98373->reset_gpio);
return -EINVAL;
}
gpio_direction_output(max98373->reset_gpio, 0);
msleep(50);
gpio_direction_output(max98373->reset_gpio, 1);
msleep(20);
}
/* Check Revision ID */
ret = regmap_read(max98373->regmap,
MAX98373_R21FF_REV_ID, &reg);
@ -944,9 +973,6 @@ static int max98373_i2c_probe(struct i2c_client *i2c,
}
dev_info(&i2c->dev, "MAX98373 revisionID: 0x%02X\n", reg);
/* voltage/current slot configuration */
max98373_slot_config(i2c, max98373);
/* codec registeration */
ret = devm_snd_soc_register_component(&i2c->dev, &soc_codec_dev_max98373,
max98373_dai, ARRAY_SIZE(max98373_dai));

1
sound/soc/codecs/max98373.h
View File

@ -203,6 +203,7 @@
struct max98373_priv {
struct regmap *regmap;
int reset_gpio;
unsigned int v_slot;
unsigned int i_slot;
unsigned int spkfb_slot;