From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laxman Dewangan Subject: Re: [rtc-linux] [PATCH 5/6] rtc: max77620: add support for max77620/max20024 RTC driver Date: Fri, 8 Jan 2016 19:06:45 +0530 Message-ID: <568FBB6D.2020904@nvidia.com> References: <1452177524-23192-1-git-send-email-ldewangan@nvidia.com> <1452177524-23192-6-git-send-email-ldewangan@nvidia.com> <568F8D7E.10500@nvidia.com> <20160108125117.GM6588@sirena.org.uk> <568FB3DD.4090503@nvidia.com> <20160108133648.GQ6588@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20160108133648.GQ6588@sirena.org.uk> Sender: linux-gpio-owner@vger.kernel.org To: Mark Brown Cc: Krzysztof Kozlowski , rtc-linux@googlegroups.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linus.walleij@linaro.org, gnurou@gmail.com, lee.jones@linaro.org, a.zummo@towertech.it, alexandre.belloni@free-electrons.com, lgirdwood@gmail.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, swarren@nvidia.com, treding@nvidia.com, Chaitanya Bandi List-Id: devicetree@vger.kernel.org On Friday 08 January 2016 07:06 PM, Mark Brown wrote: > * PGP Signed by an unknown key > > On Fri, Jan 08, 2016 at 06:34:29PM +0530, Laxman Dewangan wrote: > >> If we get the parent device, regmap handle and interrupt number from mfd >> core independent of the PMIC (MAX77620 or MAX77686), then same driver can be >> used here. >> Two way which I can think of here: > Parent device is just dev->parent, you can use dev_get_regmap() to get a > regmap given a struct device and you can use platform resources to pass > the interrupts to the children from the MFD (there's some examples, > wm831x is one). > > I think it should work with named regmap. mfd whould init regmap with name and rtc driver should ask with same name. I saw three drivers which looks same: rtc-max77620.c (new from me) and already available rtc-max77686.c, rtc-max77802.c Seems I can develop IP based rtc driver as rtc-max77xxx.c