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Date: Wed, 21 Oct 2020 14:18:02 -0700 From: Prashant Malani <pmalani@...omium.org> To: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, gregkh@...uxfoundation.org Cc: Prashant Malani <pmalani@...omium.org>, Benson Leung <bleung@...omium.org>, Heikki Krogerus <heikki.krogerus@...ux.intel.com> Subject: [PATCH] usb: typec: Expose Product Type VDOs via sysfs A PD-capable device can return up to 3 Product Type VDOs as part of its DiscoverIdentity Response (USB PD Spec, Rev 3.0, Version 2.0, Section 6.4.4.3.1). Add a sysfs attribute to expose these to userspace. Cc: Benson Leung <bleung@...omium.org> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com> Signed-off-by: Prashant Malani <pmalani@...omium.org> --- drivers/usb/typec/class.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 35eec707cb51..e6abb0dee9fa 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -122,10 +122,20 @@ static ssize_t product_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(product); +static ssize_t product_type_vdo_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n0x%08x\n0x%08x\n", id->vdo[0], id->vdo[1], id->vdo[2]); +} +static DEVICE_ATTR_RO(product_type_vdo); + static struct attribute *usb_pd_id_attrs[] = { &dev_attr_id_header.attr, &dev_attr_cert_stat.attr, &dev_attr_product.attr, + &dev_attr_product_type_vdo.attr, NULL }; -- 2.29.0.rc1.297.gfa9743e501-goog
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