linux-kernel - Re: [PATCH v3 2/2] i2c: New bus driver for the Qualcomm QUP I2C controller

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Message-ID: <20140224174021.GA18563@joshc.qualcomm.com>
Date:	Mon, 24 Feb 2014 11:40:21 -0600
From:	Josh Cartwright <joshc@...eaurora.org>
To:	"Ivan T. Ivanov" <iivanov@...sol.com>
Cc:	Kumar Gala <galak@...eaurora.org>,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Mark Rutland <mark.rutland@....com>,
	devicetree <devicetree@...r.kernel.org>,
	Pawel Moll <pawel.moll@....com>,
	Wolfram Sang <wsa@...-dreams.de>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>, linux-i2c@...r.kernel.org,
	Rob Landley <rob@...dley.net>,
	Andy Gross <agross@...eaurora.org>,
	Grant Likely <grant.likely@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 2/2] i2c: New bus driver for the Qualcomm QUP I2C
 controller

On Mon, Feb 24, 2014 at 12:33:10PM +0200, Ivan T. Ivanov wrote:
> On Fri, 2014-02-21 at 09:35 -0600, Kumar Gala wrote: 
> > On Feb 20, 2014, at 6:38 PM, Bjorn Andersson <bjorn.andersson@...ymobile.com> wrote:
> > 
> > > This bus driver supports the QUP i2c hardware controller in the Qualcomm SOCs.
> > > The Qualcomm Universal Peripheral Engine (QUP) is a general purpose data path
> > > engine with input/output FIFOs and an embedded i2c mini-core. The driver
> > > supports FIFO mode (for low bandwidth applications) and block mode (interrupt
> > > generated for each block-size data transfer).
> > > 
> > > Cc: Andy Gross <agross@...eaurora.org>
> > > Cc: Stephen Boyd <sboyd@...eaurora.org>
> > > Signed-off-by: Ivan T. Ivanov <iivanov@...sol.com>
> > > Signed-off-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>
> > > ---
> > > +config I2C_QUP
> > > +	tristate "Qualcomm QUP based I2C controller"
> > > +	depends on ARCH_MSM
> > 
> > ARCH_QCOM
> 
> There is no such symbol, still.

For what it's worth, the rename/split is in linux-next, and will land in
3.15 (as part of arm-soc cleanups).

Is the (short-term) problem of the lack of the symbol a problem?  Worse
case, this driver lands before the ARCH_QCOM rename lands, and the
driver is just not selectable.  Only when both are in place can the
driver be selected.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
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