From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 152638AF for ; Wed, 7 May 2014 11:05:12 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 82F182025B for ; Wed, 7 May 2014 11:05:10 +0000 (UTC) Message-ID: <1399460702.2996.89.camel@shinybook.infradead.org> From: David Woodhouse To: Benjamin Herrenschmidt Date: Wed, 07 May 2014 12:05:02 +0100 In-Reply-To: <1399279156.20388.32.camel@pasglop> References: <1583732.MIn3aNNoTS@vostro.rjw.lan> <6728604.hICTKAEWzt@wuerfel> <20140504111436.GC15180@arm.com> <20140504171807.GA4418@quad.lixom.net> <1399279156.20388.32.camel@pasglop> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-0RE4bWH9BSP3Smq+x4xP" Mime-Version: 1.0 Cc: Greg Kroah-Hartman , "dvhart@dvhart.com" , "Rafael J. Wysocki" , "ksummit-discuss@lists.linuxfoundation.org" Subject: Re: [Ksummit-discuss] [TECH TOPIC] Driver model/resources, ACPI, DT, etc (sigh) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-0RE4bWH9BSP3Smq+x4xP Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2014-05-05 at 18:39 +1000, Benjamin Herrenschmidt wrote: >=20 > The other option is to have both the DT representation and the ACPI > representation reach the drivers and leave it to the them (the drivers) t= o get > through two different functions at probe time to "translates" that into a > "3rd" driver private one (a structure, in a way akin to the old platform = data > but of course completely local to the driver scope). I don't like that much. For "leaf-node" device drivers, I think we're better off with a simple set of "device_get_property" functions which are a little more type-safe than the existing of_* ones, thus helping us to deal with the details of 32-bit cells vs. ACPI integers, etc. --=20 David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation --=-0RE4bWH9BSP3Smq+x4xP Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISxDCCBjQw ggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0 Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxKTAn BgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3MTAyNDIxMDE1NVoX DTE3MTAyNDIxMDE1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSsw KQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFy 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