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usb: typec: tcpci: add regulator support

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The tcpci chip vbus pin is possibly driven by an regulator. This patch
is adding support to enable an optional vdd regulator before probing.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20250404-ml-topic-tcpci-v1-1-4442c7d0ee1e@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik
2025-04-04 01:17:20 +02:00
committed by Greg Kroah-Hartman
parent 8a50da8491
commit a592e0673a
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/typec/tcpm/tcpci.c
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@@ -17,6 +17,7 @@
#include <linux/usb/tcpci.h>
#include <linux/usb/tcpm.h>
#include <linux/usb/typec.h>
#include <linux/regulator/consumer.h>
#define PD_RETRY_COUNT_DEFAULT 3
#define PD_RETRY_COUNT_3_0_OR_HIGHER 2
@@ -905,6 +906,10 @@ static int tcpci_probe(struct i2c_client *client)
int err;
u16 val = 0;
err = devm_regulator_get_enable_optional(&client->dev, "vdd");
if (err && err != -ENODEV)
return dev_err_probe(&client->dev, err, "Failed to get regulator\n");
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;