Hi,
On Tue, Sep 26, 2017 at 08:45:16AM +0800, Li Jun wrote:
> This patch add 2 APIs to get port type and preferred role from firmware
> description.
>
> Signed-off-by: Li Jun <jun...@nxp.com>
> ---
> drivers/usb/typec/typec.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
> include/linux/usb/typec.h | 2 ++
> 2 files changed, 47 insertions(+)
>
> diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c
> index 24e355b..0c77cc4 100644
> --- a/drivers/usb/typec/typec.c
> +++ b/drivers/usb/typec/typec.c
> @@ -12,6 +12,7 @@
> #include <linux/device.h>
> #include <linux/module.h>
> #include <linux/mutex.h>
> +#include <linux/of.h>
Not needed.
> #include <linux/slab.h>
> #include <linux/usb/typec.h>
>
> @@ -1249,6 +1250,50 @@ void typec_set_pwr_opmode(struct typec_port *port,
> }
> EXPORT_SYMBOL_GPL(typec_set_pwr_opmode);
>
> +/**
> + * typec_get_port_type - Get the typec port type
> + * @dev: Device to get the property of
> + *
> + * This routine is used by typec hardware driver to read property port type
> + * from the device firmware description.
> + *
> + * Returns typec_port_type if success, otherwise negative error code.
> + */
> +int typec_get_port_type(struct device *dev)
> +{
> + const char *type_str;
> + int ret;
> +
> + ret = device_property_read_string(dev, "port-type", &type_str);
> + if (ret < 0)
> + return ret;
> +
> + return match_string(typec_port_types, ARRAY_SIZE(typec_port_types),
> + type_str);
> +}
> +EXPORT_SYMBOL_GPL(typec_get_port_type);
> +
> +/**
> + * typec_get_power_role - Get the typec preferred role
> + * @dev: Device to get the property of
> + *
> + * This routine is used by typec hardware driver to read property default
> role
> + * from the device firmware description.
> + *
> + * Returns typec_role if success, otherwise negative error code.
> + */
> +int typec_get_power_role(struct device *dev)
> +{
> + const char *power_str;
> + int ret;
> +
> + ret = device_property_read_string(dev, "default-role", &power_str);
> + if (ret < 0)
> + return ret;
> +
> + return match_string(typec_roles, ARRAY_SIZE(typec_roles), power_str);
> +}
> +EXPORT_SYMBOL_GPL(typec_get_power_role);
> /* --------------------------------------- */
>
> /**
> diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
> index ffe7487..bfac685 100644
> --- a/include/linux/usb/typec.h
> +++ b/include/linux/usb/typec.h
> @@ -243,5 +243,7 @@ void typec_set_data_role(struct typec_port *port, enum
> typec_data_role role);
> void typec_set_pwr_role(struct typec_port *port, enum typec_role role);
> void typec_set_vconn_role(struct typec_port *port, enum typec_role role);
> void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode
> mode);
> +int typec_get_port_type(struct device *dev);
> +int typec_get_power_role(struct device *dev);
>
> #endif /* __LINUX_USB_TYPEC_H */
> --
> 2.6.6
Thanks,
--
heikki
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