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From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Daniel Scally <djrscally@gmail.com>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Implementation of fwnode_operations :: device_get_match_data() for software nodes?
Date: Thu, 23 Feb 2023 22:37:13 +0200	[thread overview]
Message-ID: <20230223203713.hcse3mkbq3m6sogb@skbuf> (raw)

Hi,

I have a need to instantiate a driver written for OF which calls
device_get_match_data(dev) to get various information based on the
compatible string.

I am creating a software node based on the following properties:

	struct property_entry props[2] = {
		PROPERTY_ENTRY_STRING("compatible", compatible),
		{},
	};

(I see I'm not the only one doing this, some drivers/platform/x86/x86-android-tablets.c
and drivers/platform/chrome/chromeos_laptop.c also do it)

and the driver in question does begin to probe, but its match_data is
NULL, because the operation from the title isn't implemented for
software nodes. So probing ultimately fails.

Is there some sort or reason why this doesn't exist, other than a lack
of need?

Can someone please help me with an implementation of this feature?

Thanks,
Vladimir

             reply	other threads:[~2023-02-23 20:37 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-23 20:37 Vladimir Oltean [this message]
2023-02-27 12:18 ` Heikki Krogerus
2023-02-27 23:07   ` Vladimir Oltean
2023-02-27 22:26 ` Andy Shevchenko
2023-02-27 23:44   ` Vladimir Oltean
2023-03-01 14:33     ` Andy Shevchenko
2023-03-01 14:36       ` Vladimir Oltean
2023-03-01 15:09         ` Andy Shevchenko
2023-03-01 15:25           ` Vladimir Oltean
2023-03-01 15:34             ` Andy Shevchenko
2023-03-01 17:18               ` Vladimir Oltean
2023-03-01 17:33                 ` Andy Shevchenko
2023-03-01 17:43                   ` Vladimir Oltean
2024-03-25 13:41                     ` Andy Shevchenko
2024-03-25 15:16                       ` Herve Codina
2024-03-25 15:39                         ` Andy Shevchenko
2024-03-25 15:57                           ` Herve Codina

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