From owner-freebsd-current@freebsd.org Sun Jun 12 17:34:20 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 55BF2AF0196 for ; Sun, 12 Jun 2016 17:34:20 +0000 (UTC) (envelope-from johannes@brilliantservice.co.jp) Received: from mail-vk0-x22a.google.com (mail-vk0-x22a.google.com [IPv6:2607:f8b0:400c:c05::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 17F2E25F3 for ; Sun, 12 Jun 2016 17:34:19 +0000 (UTC) (envelope-from johannes@brilliantservice.co.jp) Received: by mail-vk0-x22a.google.com with SMTP id t129so25750354vka.1 for ; Sun, 12 Jun 2016 10:34:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brilliantservice-co-jp.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; 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Sun, 12 Jun 2016 10:34:18 -0700 (PDT) MIME-Version: 1.0 Received: by 10.159.40.33 with HTTP; Sun, 12 Jun 2016 10:34:04 -0700 (PDT) In-Reply-To: <1465751553.1188.110.camel@freebsd.org> References: <1465751553.1188.110.camel@freebsd.org> From: "Lundberg, Johannes" Date: Sun, 12 Jun 2016 10:34:04 -0700 Message-ID: Subject: Re: GPIO driver for Intel Atom SoC To: Ian Lepore Cc: "freebsd-mobile@freebsd.org" , FreeBSD Current Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Content-Filtered-By: Mailman/MimeDel 2.1.22 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jun 2016 17:34:20 -0000 SGkgSWFuDQoNClRoYW5rcyBmb3IgdGhlIGhlYWRzIHVwLg0KDQpUaGlzIGlzIGEgdmFuaWxsYSBJ bnRlbCBjaGlwIHdpdGggQUNQSS4NCkFDUEkgSUQgaXMgSU5UMzNGRiAoSW50ZWwgU2VyaWFsIElP IEdQSU8gQ29udHJvbGxlcikuDQoNCkkgZG9uJ3QgdGhpbmsgSSBuZWVkIHRvIHdvcnJ5IGFib3V0 IEZEVC4gKEhvcGVmdWxseSkNCkkgY2FuJ3QgZmluZCBhbnkgdHJhY2VzIG9mIEZEVCBpbiB0aGUg TGludXggZHJpdmVyLg0KDQoNCk9uIFN1biwgSnVuIDEyLCAyMDE2IGF0IDEwOjEyIEFNLCBJYW4g TGVwb3JlIDxpYW5AZnJlZWJzZC5vcmc+IHdyb3RlOg0KDQo+IE9uIFNhdCwgMjAxNi0wNi0xMSBh dCAyMTo1OSAtMDcwMCwgTHVuZGJlcmcsIEpvaGFubmVzIHdyb3RlOg0KPiA+IEhpDQo+ID4NCj4g PiBJIHdhbnQgdG8gcG9ydCB0aGUgcGluY3RybC1jaGVycnl2aWV3IGRyaXZlciBmcm9tIExpbnV4 Lg0KPiA+DQo+ID4gSSd2ZSBzZWVuIHRoZXJlIGlzIHRoZSBncGlvYnVzIGFuZCBhIGNvbnRyb2xs ZXIgZ3Bpb2MsIGNhbiBhbnkgb2YNCj4gPiB0aGVzZSBiZQ0KPiA+IGxldmVyYWdlIHdoZW4gcG9y dGluZyBwaW5jdHJsPw0KPiA+DQo+ID4gV2hhdCBpcyB0aGUgcmVjb21tZW5kIHdheSB0byBwcm9j ZWVkPw0KPiA+DQo+ID4gVGhhbmtzIQ0KPiA+DQo+DQo+IFRoZSB0ZXJtICdwaW5jdHJsJyBoYXMg YSB2ZXJ5IHNwZWNpZmljIG1lYW5pbmcgaW4gdGhlIEZEVC9kZXZpY2V0cmVlDQo+IHdvcmxkIHdo aWNoIGlzIHByZXZlbGFudCBpbiBsaW51eCB0aGVzZSBkYXlzLiAgQSBwaW5jdHJsIGRyaXZlciBp cyBub3QNCj4ganVzdCBhIGdwaW8gY29udHJvbGxlciBkcml2ZXIuICBJZiB0aGUgbGludXggZHJp dmVyIHlvdSdyZSB0YWxraW5nDQo+IGFib3V0IGlzIGluIGZhY3QgYW4gRkRUIHBpbmN0cmwgZHJp dmVyLCB0aGVuIHlvdSdsbCBlc3NlbnRpYWxseSBiZQ0KPiBlbWJyYWNpbmcgdGhlIGVudGlyZSBG RFQgd29ybGQgKGl0J3MgYW4gYWx0ZXJuYXRpdmUgdG8gQUNQSSBhbmQgaGludHMNCj4gYW5kIG90 aGVyIHR5cGVzIG9mIG1ldGFkYXRhIGZvciBkZXNjcmliaW5nIGhhcmR3YXJlKS4gIFlvdSdsbCBh bHNvIGJlDQo+IGJyZWFraW5nIG5ldyBncm91bmQgaW4gZnJlZWJzZCBieSBiZWluZyB0aGUgZmly c3QgdG8gdHJ5IHRvIHVzZQ0KPiBmcmVlYnNkJ3MgRkRUIHN1cHBvcnQgZnJhbWV3b3JrIG9uIGFu IHg4NiBwbGF0Zm9ybS4NCj4NCj4gLS0gSWFuDQo+DQoKLS0gCj0tPS09LT0tPS09LT0tPS09LT0t PS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LT0tPS09LQrnp5jlr4bkv53mjIHjgavjgaTjgYTj gabvvJrjgZPjga7pm7vlrZDjg6Hjg7zjg6vjga/jgIHlkI3lrpvkurrjgavpgIHkv6HjgZfjgZ/j goLjga7jgafjgYLjgorjgIHnp5jljL/nibnmqKnjga7lr77osaHjgajjgarjgovmg4XloLHjgpLl kKvjgpPjgafjgYTjgb7jgZnjgIIK44KC44GX44CB5ZCN5a6b5Lq65Lul5aSW44Gu5pa544GM5Y+X 5L+h44GV44KM44Gf5aC05ZCI44CB44GT44Gu44Oh44O844Or44Gu56C05qOE44CB44GK44KI44Gz 44GT44Gu44Oh44O844Or44Gr6Zai44GZ44KL5LiA5YiH44Gu6ZaL56S644CBCuikh+WGmeOAgemF jeW4g+OAgeOBneOBruS7luOBruWIqeeUqOOAgeOBvuOBn+OBr+iomOi8ieWGheWuueOBq+WfuuOB peOBj+OBhOOBi+OBquOCi+ihjOWLleOCguOBleOCjOOBquOBhOOCiOOBhuOBiumhmOOBhOeUs+OB l+S4iuOBkuOBvuOBmeOAggotLS0KQ09ORklERU5USUFMSVRZIE5PVEU6IFRoZSBpbmZvcm1hdGlv biBpbiB0aGlzIGVtYWlsIGlzIGNvbmZpZGVudGlhbAphbmQgaW50ZW5kZWQgc29sZWx5IGZvciB0 aGUgYWRkcmVzc2VlLgpEaXNjbG9zdXJlLCBjb3B5aW5nLCBkaXN0cmlidXRpb24gb3IgYW55IG90 aGVyIGFjdGlvbiBvZiB1c2Ugb2YgdGhpcwplbWFpbCBieSBwZXJzb24gb3RoZXIgdGhhbiBpbnRl bmRlZCByZWNpcGllbnQsIGlzIHByb2hpYml0ZWQuCklmIHlvdSBhcmUgbm90IHRoZSBpbnRlbmRl ZCByZWNpcGllbnQgYW5kIGhhdmUgcmVjZWl2ZWQgdGhpcyBlbWFpbCBpbgplcnJvciwgcGxlYXNl IGRlc3Ryb3kgdGhlIG9yaWdpbmFsIG1lc3NhZ2UuCg== From owner-freebsd-current@freebsd.org Sun Jun 12 17:48:42 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F1481AF04C4 for ; 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Sun, 12 Jun 2016 18:02:24 +0000 (UTC) (envelope-from ian@freebsd.org) Received: from pmta2.delivery6.ore.mailhop.org (pmta2.delivery6.ore.mailhop.org [54.200.129.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0BF7322BA for ; Sun, 12 Jun 2016 18:02:23 +0000 (UTC) (envelope-from ian@freebsd.org) X-MHO-User: db170252-30c7-11e6-8929-8ded99d5e9d7 X-Report-Abuse-To: https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information X-Originating-IP: 73.34.117.227 X-Mail-Handler: DuoCircle Outbound SMTP Received: from ilsoft.org (unknown [73.34.117.227]) by outbound2.ore.mailhop.org (Halon Mail Gateway) with ESMTPSA; Sun, 12 Jun 2016 18:02:41 +0000 (UTC) Received: from rev (rev [172.22.42.240]) by ilsoft.org (8.15.2/8.14.9) with ESMTP id u5CI2KBw011723; Sun, 12 Jun 2016 12:02:21 -0600 (MDT) (envelope-from ian@freebsd.org) Message-ID: <1465754540.1188.113.camel@freebsd.org> Subject: Re: GPIO driver for Intel Atom SoC From: Ian Lepore To: "Lundberg, Johannes" , Adrian Chadd Cc: "freebsd-mobile@freebsd.org" , FreeBSD Current Date: Sun, 12 Jun 2016 12:02:20 -0600 In-Reply-To: References: Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.16.5 FreeBSD GNOME Team Port Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jun 2016 18:02:24 -0000 On Sun, 2016-06-12 at 10:48 -0700, Lundberg, Johannes wrote: > Thanks Adrian > > Looks like this is something I can base the new driver on. > Hopefully with this we can get eMMC support for Intel SDHCI > controller. > Why do we need gpio support for emmc/sdhci? Is there a power-enable pin that has to be asserted or something? I don't think we have an API that lets an arbitrary driver which is not a child of the gpiobus manipulate pins, outside of the FDT world. -- Ian