linux-kernel - Re: [PATCH v3 1/5] mfd/axp20x: rename files to support more devices

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Date:	Mon, 15 Sep 2014 23:18:27 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:	Jonathan Cameron <jic23@...nel.org>,
	IIO <linux-iio@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	DEVICE TREE <devicetree@...r.kernel.org>,
	Carlo Caione <carlo@...one.org>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Aaron Lu <aaron.lu@...el.com>, Alan Cox <alan@...ux.intel.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh+dt@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Hartmut Knaack <knaack.h@....de>,
	Fugang Duan <B38611@...escale.com>,
	Arnd Bergmann <arnd@...db.de>,
	Zubair Lutfullah <zubair.lutfullah@...il.com>,
	Sebastian Reichel <sre@...ian.org>,
	Johannes Thumshirn <johannes.thumshirn@....de>,
	Philippe Reynes <tremyfr@...oo.fr>,
	Angelo Compagnucci <angelo.compagnucci@...il.com>,
	Doug Anderson <dianders@...omium.org>,
	Ramakrishna Pallala <ramakrishna.pallala@...el.com>,
	Peter Meerwald <pmeerw@...erw.net>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH v3 1/5] mfd/axp20x: rename files to support more devices

On Mon, 15 Sep 2014, Jacob Pan wrote:

> On Sat, 13 Sep 2014 21:00:36 +0100
> Jonathan Cameron <jic23@...nel.org> wrote:
> 
> > On 12/09/14 00:15, Jacob Pan wrote:
> > > More XPowers PMIC devices can be supported by extending this
> > > driver, so rename it to axp2xx to cover axp288 variant.
> > > 
> > > Acked-by: Lee Jones <lee.jones@...aro.org>
> > > Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> > I'm not sure this rename is a good idea (or the original wild
> > card was for that matter).
> > 
> > For example, just a quick look at the xpowers website shows there is
> > a AXP228 which just got swept up by the name change.
> > 
> > Best plan, in my view, is to always name a driver after an individual
> > part it supports and rely on Kconfig description to say what else is
> > supported. Bit late here, but perhaps best not to make things worse!
> > > ---
> OK. I agree with this plan to keep axp20x name and modify Kconfig
> description.
> 
> Lee is that OK with you? please help to make a decision here.

I have no strong opinion either way.

> > >  drivers/mfd/Kconfig                      | 7 ++++---
> > >  drivers/mfd/Makefile                     | 2 +-
> > >  drivers/mfd/{axp20x.c => axp2xx.c}       | 6 +++---
> > >  include/linux/mfd/{axp20x.h => axp2xx.h} | 6 +++---
> > >  4 files changed, 11 insertions(+), 10 deletions(-)
> > >  rename drivers/mfd/{axp20x.c => axp2xx.c} (97%)
> > >  rename include/linux/mfd/{axp20x.h => axp2xx.h} (98%)
> > > 
> > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> > > index de5abf2..42a70a3 100644
> > > --- a/drivers/mfd/Kconfig
> > > +++ b/drivers/mfd/Kconfig
> > > @@ -67,14 +67,15 @@ config MFD_BCM590XX
> > >  	help
> > >  	  Support for the BCM590xx PMUs from Broadcom
> > >  
> > > -config MFD_AXP20X
> > > -	bool "X-Powers AXP20X"
> > > +config MFD_AXP2XX
> > > +	bool "X-Powers AXP2XX"
> > >  	select MFD_CORE
> > >  	select REGMAP_I2C
> > >  	select REGMAP_IRQ
> > >  	depends on I2C=y
> > >  	help
> > > -	  If you say Y here you get support for the X-Powers
> > > AXP202 and AXP209.
> > > +	  If you say Y here you get support for the X-Powers
> > > AXP202, AXP209 and
> > > +	  AXP288 power management IC (PMIC).
> > >  	  This driver include only the core APIs. You have to
> > > select individual components like regulators or the PEK (Power
> > > Enable Key) under the corresponding menus.
> > > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> > > index 3fcfdfc..8d0beb2 100644
> > > --- a/drivers/mfd/Makefile
> > > +++ b/drivers/mfd/Makefile
> > > @@ -103,7 +103,7 @@ obj-$(CONFIG_PMIC_DA9052)	+= da9052-irq.o
> > >  obj-$(CONFIG_PMIC_DA9052)	+= da9052-core.o
> > >  obj-$(CONFIG_MFD_DA9052_SPI)	+= da9052-spi.o
> > >  obj-$(CONFIG_MFD_DA9052_I2C)	+= da9052-i2c.o
> > > -obj-$(CONFIG_MFD_AXP20X)	+= axp20x.o
> > > +obj-$(CONFIG_MFD_AXP2XX)	+= axp2xx.o
> > >  
> > >  obj-$(CONFIG_MFD_LP3943)	+= lp3943.o
> > >  obj-$(CONFIG_MFD_LP8788)	+= lp8788.o lp8788-irq.o
> > > diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp2xx.c
> > > similarity index 97%
> > > rename from drivers/mfd/axp20x.c
> > > rename to drivers/mfd/axp2xx.c
> > > index dee6539..332a8a0 100644
> > > --- a/drivers/mfd/axp20x.c
> > > +++ b/drivers/mfd/axp2xx.c
> > > @@ -1,7 +1,7 @@
> > >  /*
> > > - * axp20x.c - MFD core driver for the X-Powers AXP202 and AXP209
> > > + * axp2xx.c - MFD core driver for the X-Powers AXP202 and AXP209
> > >   *
> > > - * AXP20x comprises an adaptive USB-Compatible PWM charger, 2 BUCK
> > > DC-DC
> > > + * AXP2xx comprises an adaptive USB-Compatible PWM charger, 2 BUCK
> > > DC-DC
> > >   * converters, 5 LDOs, multiple 12-bit ADCs of voltage, current
> > > and temperature
> > >   * as well as 4 configurable GPIOs.
> > >   *
> > > @@ -21,7 +21,7 @@
> > >  #include <linux/regmap.h>
> > >  #include <linux/slab.h>
> > >  #include <linux/regulator/consumer.h>
> > > -#include <linux/mfd/axp20x.h>
> > > +#include <linux/mfd/axp2xx.h>
> > >  #include <linux/mfd/core.h>
> > >  #include <linux/of_device.h>
> > >  #include <linux/of_irq.h>
> > > diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp2xx.h
> > > similarity index 98%
> > > rename from include/linux/mfd/axp20x.h
> > > rename to include/linux/mfd/axp2xx.h
> > > index d0e31a2..a36d91b 100644
> > > --- a/include/linux/mfd/axp20x.h
> > > +++ b/include/linux/mfd/axp2xx.h
> > > @@ -8,8 +8,8 @@
> > >   * published by the Free Software Foundation.
> > >   */
> > >  
> > > -#ifndef __LINUX_MFD_AXP20X_H
> > > -#define __LINUX_MFD_AXP20X_H
> > > +#ifndef __LINUX_MFD_AXP2XX_H
> > > +#define __LINUX_MFD_AXP2XX_H
> > >  
> > >  enum {
> > >  	AXP202_ID = 0,
> > > @@ -177,4 +177,4 @@ struct axp20x_dev {
> > >  	long				variant;
> > >  };
> > >  
> > > -#endif /* __LINUX_MFD_AXP20X_H */
> > > +#endif /* __LINUX_MFD_AXP2XX_H */
> > > 
> 
> [Jacob Pan]

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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