linux-kernel - Re: [PATCH v4 2/2] msm: gpio: Add irq support to v2 gpiolib.

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Message-ID: <alpine.DEB.2.00.1011181229380.26784@gbean-linux.qualcomm.com>
Date:	Thu, 18 Nov 2010 12:30:53 -0800 (PST)
From:	Gregory Bean <gbean@...eaurora.org>
To:	Janakiram Sistla <janakiram.sistla@...il.com>
cc:	Gregory Bean <gbean@...eaurora.org>, dwalker@...eaurora.org,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/2] msm: gpio: Add irq support to v2 gpiolib.

On Thu, 18 Nov 2010, Janakiram Sistla wrote:

> Can you let me know how this naming convention gpio-v2??
>
> Do you mean to MSM have v1 and v2 gpio hardware ??? can not we
> have one file under mach-msm as gpio.c??

The MSM8x60 is the first MSM chip to carry the second-generation, or v2,
GPIO hardware block.  This block is not backward compatible with the
v1 block found on older MSMs, so the two drivers cannot be elegantly merged.

--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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