From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Dan Scally <djrscally@gmail.com>,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
linus.walleij@linaro.org,
prabhakar.mahadev-lad.rj@bp.renesas.com,
heikki.krogerus@linux.intel.com, dmitry.torokhov@gmail.com,
laurent.pinchart+renesas@ideasonboard.com,
kieran.bingham+renesas@ideasonboard.com,
jacopo+renesas@jmondi.org, robh@kernel.org, davem@davemloft.net,
linux@rasmusvillemoes.dk, sergey.senozhatsky@gmail.com,
rostedt@goodmis.org, pmladek@suse.com, mchehab@kernel.org,
tian.shu.qiu@intel.com, bingbu.cao@intel.com,
sakari.ailus@linux.intel.com, yong.zhi@intel.com,
rafael@kernel.org, gregkh@linuxfoundation.org, kitakar@gmail.com
Subject: Re: [RFC PATCH v3 9/9] ipu3-cio2: Add functionality allowing software_node connections to sensors on platforms designed for Windows
Date: Mon, 26 Oct 2020 18:10:50 +0200 [thread overview]
Message-ID: <20201026161050.GQ4077@smile.fi.intel.com> (raw)
In-Reply-To: <20201024093702.GA3939@pendragon.ideasonboard.com>
On Sat, Oct 24, 2020 at 12:37:02PM +0300, Laurent Pinchart wrote:
> On Sat, Oct 24, 2020 at 09:50:07AM +0100, Dan Scally wrote:
> > On 24/10/2020 02:24, Laurent Pinchart wrote:
> > > On Mon, Oct 19, 2020 at 11:59:03PM +0100, Daniel Scally wrote:
> > >> + adev = acpi_dev_get_first_match_dev(supported_devices[i], NULL, -1);
> > >
> > > What if there are multiple sensor of the same model ?
> >
> > Hmm, yeah, that would be a bit of a pickle. I guess the newer
> > smartphones have multiple sensors on the back, which I presume are the
> > same model. So that will probably crop up at some point. How about
> > instead I use bus_for_each_dev() and in the applied function check if
> > the _HID is in the supported list?
>
> Sounds good to me.
>
> > >> + if (!adev)
> > >> + continue;
Please, don't.
If we have so weird ACPI tables it must be w/a differently. The all, even badly
formed, ACPI tables I have seen so far are using _UID to distinguish instance
of the device (see second parameter to the above function).
If we meet the very broken table I would like rather to know about, then
silently think ahead what could be best.
I.o.w. don't change this until we will have a real example of the problematic
firmware.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2020-10-29 20:02 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-19 22:58 [RFC PATCH v3 0/9] Add functionality to ipu3-cio2 driver allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-10-19 22:58 ` [RFC PATCH v3 1/9] software_node: Add helper function to unregister arrays of software_nodes ordered parent to child Daniel Scally
2020-10-20 9:22 ` Andy Shevchenko
2020-10-20 10:05 ` Sakari Ailus
2020-10-20 11:01 ` Andy Shevchenko
2020-10-20 11:02 ` Andy Shevchenko
2020-10-20 11:04 ` Heikki Krogerus
2020-10-20 22:52 ` Dan Scally
2020-10-21 9:40 ` Andy Shevchenko
2020-10-21 9:54 ` Dan Scally
2020-10-19 22:58 ` [RFC PATCH v3 2/9] lib/test_printf.c: Use helper function to unwind array of software_nodes Daniel Scally
2020-10-20 7:23 ` Petr Mladek
2020-10-20 9:20 ` Andy Shevchenko
2020-10-19 22:58 ` [RFC PATCH v3 3/9] software_node: Fix failure to hold refcount in software_node_get_next_child Daniel Scally
2020-10-20 12:44 ` Rafael J. Wysocki
2020-10-20 13:31 ` Sakari Ailus
2020-10-20 23:25 ` Dan Scally
2020-10-21 9:33 ` Andy Shevchenko
2020-10-21 9:37 ` Sakari Ailus
2020-10-21 9:56 ` Dan Scally
2020-10-19 22:58 ` [RFC PATCH v3 4/9] software_node: Add support for fwnode_graph*() family of functions Daniel Scally
2020-10-20 9:17 ` Andy Shevchenko
2020-10-20 12:35 ` Sakari Ailus
2020-10-20 13:32 ` Sakari Ailus
2020-10-19 22:58 ` [RFC PATCH v3 5/9] ipu3-cio2: Add T: entry to MAINTAINERS Daniel Scally
2020-10-20 9:16 ` Andy Shevchenko
2020-10-24 0:28 ` Laurent Pinchart
2020-10-19 22:59 ` [RFC PATCH v3 6/9] ipu3-cio2: Rename ipu3-cio2.c to allow module to be built from multiple sources files retaining ipu3-cio2 name Daniel Scally
2020-10-20 9:15 ` Andy Shevchenko
2020-10-20 20:41 ` Dan Scally
2020-10-24 0:34 ` Laurent Pinchart
2020-10-19 22:59 ` [RFC PATCH v3 7/9] ipu3-cio2: Check if pci_dev->dev's fwnode is a software_node in cio2_parse_firmware() and set FWNODE_GRAPH_DEVICE_DISABLED if so Daniel Scally
2020-10-20 9:19 ` Andy Shevchenko
2020-10-20 12:06 ` Sakari Ailus
2020-10-20 19:56 ` Dan Scally
2020-10-20 22:49 ` Sakari Ailus
2020-10-20 22:55 ` Dan Scally
2020-10-24 0:39 ` Laurent Pinchart
2020-10-24 14:29 ` Sakari Ailus
2020-10-24 16:33 ` Dan Scally
2020-10-24 16:55 ` Laurent Pinchart
2020-10-19 22:59 ` [RFC PATCH v3 8/9] media: v4l2-core: v4l2-async: Check possible match in match_fwnode based on sd->fwnode->secondary Daniel Scally
2020-10-19 22:59 ` [RFC PATCH v3 9/9] ipu3-cio2: Add functionality allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-10-20 9:41 ` Andy Shevchenko
2020-10-21 22:05 ` Daniel Scally
2020-10-22 13:40 ` Andy Shevchenko
2020-10-23 10:06 ` Dan Scally
2020-10-24 1:24 ` Laurent Pinchart
2020-10-24 8:50 ` Dan Scally
2020-10-24 9:37 ` Laurent Pinchart
2020-10-24 22:28 ` Daniel Scally
2020-10-24 22:36 ` Laurent Pinchart
2020-10-24 22:50 ` Daniel Scally
2020-10-26 8:20 ` Dan Scally
2020-10-26 16:05 ` Andy Shevchenko
2020-10-29 20:17 ` Laurent Pinchart
2020-10-29 22:36 ` Dan Scally
2020-10-26 16:10 ` Andy Shevchenko [this message]
2020-10-29 20:19 ` Laurent Pinchart
2020-10-29 20:26 ` Andy Shevchenko
2020-10-29 21:29 ` Laurent Pinchart
2020-10-29 22:22 ` Andy Shevchenko
2020-10-29 22:51 ` Laurent Pinchart
2020-11-13 10:02 ` Dan Scally
2020-11-13 16:22 ` Laurent Pinchart
2020-11-13 19:45 ` Andy Shevchenko
2020-11-15 8:45 ` Daniel Scally
2020-11-16 8:53 ` Laurent Pinchart
2020-11-16 13:57 ` Andy Shevchenko
2020-11-16 14:10 ` Laurent Pinchart
2020-11-16 14:15 ` Dan Scally
2020-11-16 16:16 ` Andy Shevchenko
2020-11-17 12:01 ` Dan Scally
2020-11-17 16:42 ` Andy Shevchenko
2020-11-17 22:59 ` Dan Scally
2020-10-24 15:11 ` Sakari Ailus
2020-10-24 15:14 ` Sakari Ailus
2020-10-24 20:28 ` Dan Scally
2020-10-25 11:18 ` Sakari Ailus
2020-10-20 9:24 ` [RFC PATCH v3 0/9] Add functionality to ipu3-cio2 driver " Andy Shevchenko
2020-10-20 13:38 ` Rafael J. Wysocki
2020-10-21 20:59 ` Daniel Scally
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