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ASoC: cs35l41: Add a file node for TCMD to read CS35L41_GPIO_STATUS1

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TCMD needs to check the connectivity of the CDC_LP_GATE line by reading GPIO1 status,
and CS35L41_GPIO_STATUS1 indicates the status of GPIO1.

Change-Id: I4a563cc228a455f9995fc92bfcf4b11cdfd6136b
Reviewed-on: https://gerrit.mot.com/1274600
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Seungyoon Lee <yoon@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
lixp5 2018-11-28 14:50:17 +08:00 • committed by Xiaopeng Li
commit 2d3acf4413
1 changed files with 33 additions and 0 deletions
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33
sound/soc/codecs/cs35l41-i2c.c
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@ -55,6 +55,35 @@ static const struct i2c_device_id cs35l41_id_i2c[] = {
MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c);
static ssize_t gpio_status_show(struct device *dev, struct device_attribute *attr, char *buf)
{
u32 int_status = 0;
struct cs35l41_private *cs35l41 = dev_get_drvdata(dev);
if (cs35l41 != NULL)
{
regmap_read(cs35l41->regmap, CS35L41_GPIO_STATUS1, &int_status);
dev_err(cs35l41->dev, "gpio_status_show read regmap:%d\n", int_status);
}
else
{
dev_err(cs35l41->dev, "gpio_status_show cs35l41 not init\n");
}
return snprintf(buf, PAGE_SIZE, "%d\n", int_status);
}
static DEVICE_ATTR(gpio_status, S_IRUGO, gpio_status_show, NULL);
static struct attribute *gpio_status_attrs[] = {
&dev_attr_gpio_status.attr,
NULL,
};
static struct attribute_group gpio_status_attr_group = {
.attrs = gpio_status_attrs,
};
static int cs35l41_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@ -82,6 +111,10 @@ static int cs35l41_i2c_probe(struct i2c_client *client,
return ret;
}
ret = sysfs_create_group(&cs35l41->dev->kobj, &gpio_status_attr_group);
if (ret < 0)
dev_err(cs35l41->dev, "sysfs group creation failed, ret = %d\n", ret);
return cs35l41_probe(cs35l41, pdata);
}