* [PATCH] usb: typec: Expose Product Type VDOs via sysfs
@ 2020-10-21 21:18 Prashant Malani
2020-10-22 3:18 ` Benson Leung
2020-10-22 5:30 ` Greg KH
0 siblings, 2 replies; 4+ messages in thread
From: Prashant Malani @ 2020-10-21 21:18 UTC (permalink / raw)
To: linux-kernel, linux-usb, gregkh
Cc: Prashant Malani, Benson Leung, Heikki Krogerus
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@chromium.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Prashant Malani <pmalani@chromium.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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] usb: typec: Expose Product Type VDOs via sysfs
2020-10-21 21:18 [PATCH] usb: typec: Expose Product Type VDOs via sysfs Prashant Malani
@ 2020-10-22 3:18 ` Benson Leung
2020-10-22 5:30 ` Greg KH
1 sibling, 0 replies; 4+ messages in thread
From: Benson Leung @ 2020-10-22 3:18 UTC (permalink / raw)
To: Prashant Malani
Cc: linux-kernel, linux-usb, gregkh, Benson Leung, Heikki Krogerus
[-- Attachment #1: Type: text/plain, Size: 1653 bytes --]
Hi Prashant,
On Wed, Oct 21, 2020 at 02:18:02PM -0700, Prashant Malani wrote:
> 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@chromium.org>
> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.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
>
--
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@google.com
Chromium OS Project
bleung@chromium.org
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] usb: typec: Expose Product Type VDOs via sysfs
2020-10-21 21:18 [PATCH] usb: typec: Expose Product Type VDOs via sysfs Prashant Malani
2020-10-22 3:18 ` Benson Leung
@ 2020-10-22 5:30 ` Greg KH
2020-10-22 5:36 ` Prashant Malani
1 sibling, 1 reply; 4+ messages in thread
From: Greg KH @ 2020-10-22 5:30 UTC (permalink / raw)
To: Prashant Malani; +Cc: linux-kernel, linux-usb, Benson Leung, Heikki Krogerus
On Wed, Oct 21, 2020 at 02:18:02PM -0700, Prashant Malani wrote:
> 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.
You forgot to add the proper Documentation/ABI/ file at the same time,
which makes this patch impossible to review properly and able to be
applied :(
Please fix.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] usb: typec: Expose Product Type VDOs via sysfs
2020-10-22 5:30 ` Greg KH
@ 2020-10-22 5:36 ` Prashant Malani
0 siblings, 0 replies; 4+ messages in thread
From: Prashant Malani @ 2020-10-22 5:36 UTC (permalink / raw)
To: Greg KH
Cc: Linux Kernel Mailing List, open list:USB NETWORKING DRIVERS,
Benson Leung, Heikki Krogerus
Hi Greg,
Thanks for taking a look.
On Wed, Oct 21, 2020 at 10:30 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Wed, Oct 21, 2020 at 02:18:02PM -0700, Prashant Malani wrote:
> > 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.
>
> You forgot to add the proper Documentation/ABI/ file at the same time,
> which makes this patch impossible to review properly and able to be
> applied :(
>
Sorry about that, will fix and resend.
Best regards,
-Prashant
> Please fix.
>
> thanks,
>
> greg k-h
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-10-22 5:36 UTC | newest]
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2020-10-21 21:18 [PATCH] usb: typec: Expose Product Type VDOs via sysfs Prashant Malani
2020-10-22 3:18 ` Benson Leung
2020-10-22 5:30 ` Greg KH
2020-10-22 5:36 ` Prashant Malani
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