From: Daniel Scally <djrscally@gmail.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-media@vger.kernel.org, devel@acpica.org, rjw@rjwysocki.net,
lenb@kernel.org, gregkh@linuxfoundation.org, yong.zhi@intel.com,
bingbu.cao@intel.com, tian.shu.qiu@intel.com, mchehab@kernel.org,
robert.moore@intel.com, erik.kaneda@intel.com, pmladek@suse.com,
rostedt@goodmis.org, sergey.senozhatsky@gmail.com,
andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk,
laurent.pinchart+renesas@ideasonboard.com,
jacopo+renesas@jmondi.org,
kieran.bingham+renesas@ideasonboard.com,
hverkuil-cisco@xs4all.nl, m.felsch@pengutronix.de,
niklas.soderlund+renesas@ragnatech.se, slongerbeam@gmail.com,
heikki.krogerus@linux.intel.com, linus.walleij@linaro.org
Subject: Re: [PATCH v3 06/14] include: fwnode.h: Define format macros for ports and endpoints
Date: Mon, 28 Dec 2020 21:36:13 +0000 [thread overview]
Message-ID: <d5c489fb-5b6e-cc9f-2294-7bc7e3640362@gmail.com> (raw)
In-Reply-To: <20201228171150.GA26370@paasikivi.fi.intel.com>
Hi Sakari
On 28/12/2020 17:11, Sakari Ailus wrote:
> On Mon, Dec 28, 2020 at 06:30:24PM +0200, Sakari Ailus wrote:
>> Hi Daniel, Andy,
>>
>> On Thu, Dec 24, 2020 at 01:08:59AM +0000, Daniel Scally wrote:
>>> OF, ACPI and software_nodes all implement graphs including nodes for ports
>>> and endpoints. These are all intended to be named with a common schema,
>>> as "port@n" and "endpoint@n" where n is an unsigned int representing the
>>> index of the node. To ensure commonality across the subsystems, provide a
>>> set of macros to define the format.
>>>
>>> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>>> Signed-off-by: Daniel Scally <djrscally@gmail.com>
>>> ---
>>> Changes in v3
>>> - Patch introduced
>>>
>>> include/linux/fwnode.h | 13 +++++++++++++
>>> 1 file changed, 13 insertions(+)
>>>
>>> diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
>>> index 9506f8ec0974..52889efceb7d 100644
>>> --- a/include/linux/fwnode.h
>>> +++ b/include/linux/fwnode.h
>>> @@ -32,6 +32,19 @@ struct fwnode_endpoint {
>>> const struct fwnode_handle *local_fwnode;
>>> };
>>>
>>> +/*
>>> + * ports and endpoints defined in OF, ACPI and as software_nodes should all
>>> + * follow a common naming scheme; use these macros to ensure commonality across
>>> + * the subsystems.
>>> + *
>>> + * The *PREFIX_LEN macros refer to the length of the "port@" and "endpoint@"
>>> + * sections of the naming scheme.
>>> + */
>>> +#define FWNODE_GRAPH_PORT_NAME_FORMAT "port@%u"
>>> +#define FWNODE_GRAPH_PORT_NAME_PREFIX_LEN 5
>>> +#define FWNODE_GRAPH_ENDPOINT_NAME_FORMAT "endpoint@%u"
>>> +#define FWNODE_GRAPH_ENDPOINT_PREFIX_LEN 9
>>> +
>>> #define NR_FWNODE_REFERENCE_ARGS 8
>>
>> I'd keep such definitions local to the swnode implementation as neither
>> ACPI nor DT have an apparent need for them. They do use the naming, but
>> don't appear to format such strings.
>
> Ah, I noticed these are used by the later patches. Please ignore that
> comment then.
>
> But these are still definitions, so I'd use SWNODE prefix rather than
> FWNODE. That should also be reflected in the comment.
Fine by me; I shall change that.
> ACPI does not have a format port concept so the definitions that are being
> used can be said to be specific to Linux.
>
next prev parent reply other threads:[~2020-12-28 23:23 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-24 1:08 [PATCH v3 00/14] Add functionality to ipu3-cio2 driver allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-12-24 1:08 ` [PATCH v3 01/14] software_node: Fix refcounts in software_node_get_next_child() Daniel Scally
2020-12-24 1:08 ` [PATCH v3 02/14] property: Return true in fwnode_device_is_available for NULL ops Daniel Scally
2020-12-24 1:08 ` [PATCH v3 03/14] property: Call fwnode_graph_get_endpoint_by_id() for fwnode->secondary Daniel Scally
2020-12-24 1:08 ` [PATCH v3 04/14] software_node: Enforce parent before child ordering of nodes arrays Daniel Scally
2020-12-24 1:08 ` [PATCH v3 05/14] software_node: unregister software_nodes in reverse order Daniel Scally
2020-12-24 12:13 ` Andy Shevchenko
2020-12-24 14:00 ` Daniel Scally
2020-12-24 14:12 ` Andy Shevchenko
2020-12-24 14:14 ` Daniel Scally
2020-12-24 18:36 ` David Laight
2020-12-28 10:15 ` Andy Shevchenko
2020-12-28 21:17 ` Daniel Scally
2020-12-28 16:34 ` Sakari Ailus
2020-12-28 17:47 ` Andy Shevchenko
2020-12-24 1:08 ` [PATCH v3 06/14] include: fwnode.h: Define format macros for ports and endpoints Daniel Scally
2020-12-24 12:17 ` Andy Shevchenko
2020-12-24 12:41 ` Laurent Pinchart
2020-12-28 16:30 ` Sakari Ailus
2020-12-28 17:11 ` Sakari Ailus
2020-12-28 21:36 ` Daniel Scally [this message]
2020-12-24 1:09 ` [PATCH v3 07/14] software_node: Add support for fwnode_graph*() family of functions Daniel Scally
2020-12-24 12:24 ` Andy Shevchenko
2020-12-24 12:55 ` Laurent Pinchart
2020-12-24 13:03 ` Andy Shevchenko
2020-12-24 14:21 ` Daniel Scally
2020-12-28 16:41 ` Sakari Ailus
2020-12-28 21:37 ` Daniel Scally
2020-12-26 23:47 ` Daniel Scally
2020-12-24 12:53 ` Laurent Pinchart
2020-12-24 14:24 ` Daniel Scally
2020-12-24 1:09 ` [PATCH v3 08/14] lib/test_printf.c: Use helper function to unwind array of software_nodes Daniel Scally
2020-12-24 1:09 ` [PATCH v3 09/14] ipu3-cio2: Add T: entry to MAINTAINERS Daniel Scally
2020-12-24 1:09 ` [PATCH v3 10/14] ipu3-cio2: Rename ipu3-cio2.c Daniel Scally
2020-12-24 1:09 ` [PATCH v3 11/14] media: v4l2-core: v4l2-async: Check sd->fwnode->secondary in match_fwnode() Daniel Scally
2020-12-24 1:09 ` [PATCH v3 12/14] acpi: Add acpi_dev_get_next_match_dev() and helper macro Daniel Scally
2020-12-24 1:09 ` [PATCH v3 13/14] include: media: v4l2-fwnode: Include v4l2_fwnode_bus_type Daniel Scally
2020-12-24 12:32 ` Andy Shevchenko
2020-12-26 23:14 ` Daniel Scally
2020-12-24 12:58 ` Laurent Pinchart
2020-12-24 1:09 ` [PATCH v3 14/14] ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver Daniel Scally
2020-12-24 12:54 ` Andy Shevchenko
2020-12-26 23:23 ` Daniel Scally
2020-12-28 17:05 ` Sakari Ailus
2020-12-28 22:37 ` Daniel Scally
2020-12-28 22:55 ` Andy Shevchenko
2020-12-28 22:56 ` Andy Shevchenko
2020-12-28 23:07 ` Laurent Pinchart
2020-12-28 23:54 ` Andy Shevchenko
2020-12-29 0:07 ` Laurent Pinchart
2020-12-30 20:47 ` Andy Shevchenko
2020-12-28 23:30 ` Daniel Scally
2020-12-28 23:47 ` Andy Shevchenko
2021-01-02 17:07 ` Sakari Ailus
2021-01-02 17:12 ` Daniel Scally
2021-01-02 17:21 ` Sakari Ailus
2021-01-02 17:24 ` Sakari Ailus
2021-01-02 21:23 ` Daniel Scally
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