[PATCH 09/11] extcon: ptn5150: Make 'vbus-gpios' optional

Krzysztof Kozlowski
2020-08-12T16:30:40Z

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>
---
drivers/extcon/extcon-ptn5150.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c
index bbb185378e4b..9daf45118ffd 100644
--- a/drivers/extcon/extcon-ptn5150.c
+++ b/drivers/extcon/extcon-ptn5150.c
@@ -239,8 +239,14 @@ 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);
--
2.17.1