From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Date: Fri, 20 Mar 2015 07:24:41 +0000 Subject: Re: [PATCH 1/3] i2c: slave: rework the slave API Message-Id: <20150320072441.GA10068@pengutronix.de> List-Id: References: <1426164123-8853-1-git-send-email-wsa@the-dreams.de> <1426164123-8853-2-git-send-email-wsa@the-dreams.de> <20150319201751.GZ10068@pengutronix.de> <20150320071504.GA906@katana> In-Reply-To: <20150320071504.GA906@katana> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Wolfram Sang Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sh-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Magnus Damm , Simon Horman , Laurent Pinchart , Geert Uytterhoeven , Andrey Danin , Marc Dietrich , Debora Grosse , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Moin Wolfram, On Fri, Mar 20, 2015 at 08:15:04AM +0100, Wolfram Sang wrote: > On Thu, Mar 19, 2015 at 09:17:51PM +0100, Uwe Kleine-K=F6nig wrote: > > Hello Wolfram, > >=20 > > On Thu, Mar 12, 2015 at 01:42:01PM +0100, Wolfram Sang wrote: > > > From: Wolfram Sang > > >=20 > > > After more discussion, brave users, and additional datasheet evaluati= on, > > > some API updates for the new I2C slave framework became imminent. The > > > slave events now get some easier to understand naming. Also, the event > > > handling has been simplified to only send one event per interrupt. > > what is an interrupt here? An event where the bus driver needs feedback > > from the backend? >=20 > More the other way around: when the bus driver needs to notify the > backend. I wasn't 100% sure about the word 'interrupt', but then decided > a HW slave support without interrupts would be so rare and adventurous > that it is okay to use the term :) Yeah, I agree on HW slave support without interrupts is hardly possible. But I imagine that controllers differ in which situations they can issue an interrupt so talking about them for generic code feels strange to me because $flexiblecontrolerwithvariousirqs doesn't need to send more events than $bareminimumcontroler. Best regards Uwe --=20 Pengutronix e.K. | Uwe Kleine-K=F6nig | Industrial Linux Solutions | http://www.pengutronix.de/ |