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From: slash.tmp@free.fr (Mason)
To: linux-arm-kernel@lists.infradead.org
Subject: Grafting old platform drivers onto a new DT kernel
Date: Mon, 9 Nov 2015 17:07:27 +0100	[thread overview]
Message-ID: <5640C4BF.2010204@free.fr> (raw)
In-Reply-To: <yw1xtwov5gh1.fsf@unicorn.mansr.com>

On 09/11/2015 16:40, M?ns Rullg?rd wrote:

> The simplest solution for you is probably to add a quick and dirty DT
> binding to the old driver.  If it doesn't use any driver-specific
> platform data struct, you only need to set .of_match_table in the
> struct platform_driver.  If there is a platform data struct, you'll also
> need to write some code to populate it from DT properties.  It shouldn't
> take more than a few minutes per driver in most cases.

I'll try that approach, although I fear that "a few minutes per driver"
is an optimistic assessment.

> To get those drivers accepted upstream will obviously take a bit more
> work.

AKA "rewrite from scratch" :-)

Regards.

WARNING: multiple messages have this Message-ID (diff)
From: Mason <slash.tmp@free.fr>
To: Mans Rullgard <mans@mansr.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>,
	Andrew Lunn <andrew@lunn.ch>, LKML <linux-kernel@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Jason Cooper <jason@lakedaemon.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ulf Hansson <ulf.hansson@linaro.org>
Subject: Re: Grafting old platform drivers onto a new DT kernel
Date: Mon, 9 Nov 2015 17:07:27 +0100	[thread overview]
Message-ID: <5640C4BF.2010204@free.fr> (raw)
In-Reply-To: <yw1xtwov5gh1.fsf@unicorn.mansr.com>

On 09/11/2015 16:40, Måns Rullgård wrote:

> The simplest solution for you is probably to add a quick and dirty DT
> binding to the old driver.  If it doesn't use any driver-specific
> platform data struct, you only need to set .of_match_table in the
> struct platform_driver.  If there is a platform data struct, you'll also
> need to write some code to populate it from DT properties.  It shouldn't
> take more than a few minutes per driver in most cases.

I'll try that approach, although I fear that "a few minutes per driver"
is an optimistic assessment.

> To get those drivers accepted upstream will obviously take a bit more
> work.

AKA "rewrite from scratch" :-)

Regards.


  reply	other threads:[~2015-11-09 16:07 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-05 11:02 Grafting old platform drivers onto a new DT kernel Mason
2015-11-05 11:02 ` Mason
2015-11-05 15:15 ` Andrew Lunn
2015-11-05 15:15   ` Andrew Lunn
2015-11-05 15:42   ` Javier Martinez Canillas
2015-11-05 15:42     ` Javier Martinez Canillas
2015-11-09 15:15     ` Mason
2015-11-09 15:15       ` Mason
2015-11-09 15:36       ` Marc Zyngier
2015-11-09 15:36         ` Marc Zyngier
2016-02-03 15:33         ` Sebastian Frias
2015-11-09 15:40       ` Måns Rullgård
2015-11-09 15:40         ` Måns Rullgård
2015-11-09 16:07         ` Mason [this message]
2015-11-09 16:07           ` Mason
2015-11-09 16:12           ` Måns Rullgård
2015-11-09 16:12             ` Måns Rullgård
2015-11-09 17:03             ` Mason
2015-11-09 17:03               ` Mason
2015-11-09 17:13               ` Måns Rullgård
2015-11-09 17:13                 ` Måns Rullgård
2015-11-10 12:44                 ` Mason
2015-11-10 12:44                   ` Mason
2015-11-10 12:56                   ` Arnd Bergmann
2015-11-10 12:56                     ` Arnd Bergmann
2015-11-09 16:26       ` Russell King - ARM Linux
2015-11-09 16:26         ` Russell King - ARM Linux

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