From: "Michał Pecio" <michal.pecio@gmail.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>,
linux-usb@vger.kernel.org, linux-media@vger.kernel.org,
gregkh@linuxfoundation.org, laurent.pinchart@ideasonboard.com,
hdegoede@redhat.com, Thinh.Nguyen@synopsys.com,
Amardeep Rai <amardeep.rai@intel.com>,
Kannappan R <r.kannappan@intel.com>,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: [PATCH v4 3/4] USB: Add a function to obtain USB version independent maximum bpi value
Date: Mon, 18 Aug 2025 10:37:37 +0200 [thread overview]
Message-ID: <20250818103737.487e4093@foxbook> (raw)
In-Reply-To: <767ac1c3-f09c-47cf-947d-968ae574e577@linux.intel.com>
On Mon, 18 Aug 2025 10:32:48 +0300, Mathias Nyman wrote:
> I think the "ESIT" acronym (Endpoint Service Interval Time) is very xHCI spec
> specific. Usb spec usually refers to isoc and interrupt endpoints as "periodic"
>
> how about one of these:
> usb_endpoint_max_periodic_bytes()
> usb_endpoint_max_periodic_payload()
> usb_endpoint_max_periodic_bpi()
I was thinking just drop "isoch" and leave usb_endpoint_max_bpi(),
because USB specs call this "bytes per interval".
But Alan didn't like this 3LA so we can get creative. More ideas:
usb_endpoint_interval_payload()
usb_endpoint_interval_bytes()
Naming things and off-by-one errors...
next prev parent reply other threads:[~2025-08-18 8:37 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-12 13:24 [PATCH v4 0/4] eUSB2 Double Isochronous IN Bandwidth support Sakari Ailus
2025-08-12 13:24 ` [PATCH v4 1/4] xhci: Add host support for eUSB2 double isochronous bandwidth devices Sakari Ailus
2025-08-18 9:50 ` Michał Pecio
2025-08-18 15:30 ` Mathias Nyman
2025-08-19 14:01 ` Sakari Ailus
2025-08-20 8:24 ` Sakari Ailus
2025-08-20 8:43 ` Michał Pecio
2025-08-20 13:19 ` Sakari Ailus
2025-08-12 13:24 ` [PATCH v4 2/4] USB: core: support eUSB2 double bandwidth large isoc URB frames Sakari Ailus
2025-08-12 13:24 ` [PATCH v4 3/4] USB: Add a function to obtain USB version independent maximum bpi value Sakari Ailus
2025-08-12 13:58 ` Alan Stern
2025-08-13 14:49 ` Michał Pecio
2025-08-18 6:08 ` Sakari Ailus
2025-08-18 7:32 ` Mathias Nyman
2025-08-18 8:37 ` Michał Pecio [this message]
2025-08-18 11:27 ` Sakari Ailus
2025-08-18 12:13 ` Sakari Ailus
2025-08-18 13:39 ` Alan Stern
2025-08-12 13:24 ` [PATCH v4 4/4] media: uvcvideo: eUSB2 double isochronous bandwidth support Sakari Ailus
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