[PATCH] usb: typec: tcpci: add regulator support

[PATCH] usb: typec: tcpci: add regulator support

[Michael Grzeschik]

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>
---
 drivers/usb/typec/tcpm/tcpci.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index 19ab6647af706..a56e31b20c214 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -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;

---
base-commit: a1b5bd45d4ee58af4f56e49497b8c3db96d8f8a3
change-id: 20250404-ml-topic-tcpci-524d1d6bfede

Best regards,
-- 
Michael Grzeschik <m.grzeschik@pengutronix.de>

Re: [PATCH] usb: typec: tcpci: add regulator support

[Heikki Krogerus]

+Badhri

On Fri, Apr 04, 2025 at 01:17:20AM +0200, Michael Grzeschik wrote:
> 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>

> ---
>  drivers/usb/typec/tcpm/tcpci.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
> index 19ab6647af706..a56e31b20c214 100644
> --- a/drivers/usb/typec/tcpm/tcpci.c
> +++ b/drivers/usb/typec/tcpm/tcpci.c
> @@ -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;
> 
> ---
> base-commit: a1b5bd45d4ee58af4f56e49497b8c3db96d8f8a3
> change-id: 20250404-ml-topic-tcpci-524d1d6bfede
> 
> Best regards,
> -- 
> Michael Grzeschik <m.grzeschik@pengutronix.de>

-- 
heikki