linux-kernel - Re: [PATCHv8 2/4] power_supply: Introduce generic psy charging driver

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Date:	Wed, 12 Mar 2014 15:40:35 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Jenny TC <jenny.tc@...el.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Anton Vorontsov <cbouatmailru@...il.com>,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Kim Milo <Milo.Kim@...com>, Lee Jones <lee.jones@...aro.org>,
	Jingoo Han <jg1.han@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Pali Rohár <pali.rohar@...il.com>,
	Rhyland Klein <rklein@...dia.com>, Pavel Machek <pavel@....cz>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	David Woodhouse <dwmw2@...radead.org>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Sebastian Reichel <sre@...g0.de>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pallala Ramakrishna <ramakrishna.pallala@...el.com>,
	Ивайло Димитров <freemangordon@....bg>,
	Linux-OMAP <linux-omap@...r.kernel.org>
Subject: Re: [PATCHv8 2/4] power_supply: Introduce generic psy charging driver

On Fri, Mar 7, 2014 at 6:29 AM, Jenny TC <jenny.tc@...el.com> wrote:

> +enum psy_charger_cable_type {
> +       PSY_CHARGER_CABLE_TYPE_NONE = 0,
> +       PSY_CHARGER_CABLE_TYPE_USB_SDP = 1 << 0,
> +       PSY_CHARGER_CABLE_TYPE_USB_DCP = 1 << 1,
> +       PSY_CHARGER_CABLE_TYPE_USB_CDP = 1 << 2,
> +       PSY_CHARGER_CABLE_TYPE_USB_ACA = 1 << 3,
> +       PSY_CHARGER_CABLE_TYPE_AC = 1 << 4,
> +       PSY_CHARGER_CABLE_TYPE_ACA_DOCK = 1 << 5,
> +       PSY_CHARGER_CABLE_TYPE_ACA_A = 1 << 6,
> +       PSY_CHARGER_CABLE_TYPE_ACA_B = 1 << 7,
> +       PSY_CHARGER_CABLE_TYPE_ACA_C = 1 << 8,
> +       PSY_CHARGER_CABLE_TYPE_SE1 = 1 << 9,
> +       PSY_CHARGER_CABLE_TYPE_MHL = 1 << 10,
> +       PSY_CHARGER_CABLE_TYPE_B_DEVICE = 1 << 11,
> +};

I still disagree with using an enum as bitfield.

Atleast
#include <linux/bitops.h>
and use BIT(0), BIT(1) etc to define the bits.

Yours,
Linus Walleij
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