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extcon: ptn5150: Make 'vbus-gpios' optional

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The PTN5150 chip can be used in hardware designs with only reporting of
USB Type-C connection, without the VBUS control.  The driver however
unconditionally expected 'vbus-gpios'.

Since all uses of the VBUS GPIO descriptor are NULL safe, the code can
accept missing GPIO and provide only extcon status reporting.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Krzysztof Kozlowski 2020-08-17 09:00:05 +02:00 committed by Chanwoo Choi
parent 85256f611f
commit fbaf3b67d4
1 changed files with 8 additions and 2 deletions
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10
drivers/extcon/extcon-ptn5150.c
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@ -238,8 +238,14 @@ static int ptn5150_i2c_probe(struct i2c_client *i2c,
info->i2c = i2c;
info->vbus_gpiod = devm_gpiod_get(&i2c->dev, "vbus", GPIOD_OUT_LOW);
if (IS_ERR(info->vbus_gpiod)) {
dev_err(dev, "failed to get VBUS GPIO\n");
return PTR_ERR(info->vbus_gpiod);
ret = PTR_ERR(info->vbus_gpiod);
if (ret == -ENOENT) {
dev_info(dev, "No VBUS GPIO, ignoring VBUS control\n");
info->vbus_gpiod = NULL;
} else {
dev_err(dev, "failed to get VBUS GPIO\n");
return ret;
}
}
mutex_init(&info->mutex);