diff options
Diffstat (limited to 'sound/soc/codecs/max98373.c')
| -rw-r--r-- | sound/soc/codecs/max98373.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c index 8c601a3ebc27..e609abcf3220 100644 --- a/sound/soc/codecs/max98373.c +++ b/sound/soc/codecs/max98373.c @@ -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" @@ -901,6 +902,17 @@ 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 @@ -929,7 +941,6 @@ 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); @@ -940,6 +951,24 @@ 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, ®); @@ -950,9 +979,6 @@ 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)); |