linux-kernel - RE: [PATCH 1/6] input: cyapa: rearchitecture driver to support function pointers

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Date:	Tue, 20 May 2014 06:10:01 +0000
From:	Dudley Du <dudl@...ress.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Benson Leung <bleung@...gle.com>,
	Daniel Kurtz <djkurtz@...gle.com>,
	"David Solda" <dso@...ress.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/6] input: cyapa: rearchitecture driver to support
 function pointers

Hi Dmitry,

Thanks for your advice, I will organize it and resubmit it as v2.

Thanks,
Dudley

> -----Original Message-----
> From: Dmitry Torokhov [mailto:dmitry.torokhov@...il.com]
> Sent: Tuesday, May 20, 2014 11:48 AM
> To: Dudley Du
> Cc: Benson Leung; Daniel Kurtz; David Solda; linux-input@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 1/6] input: cyapa: rearchitecture driver to support function pointers
>
> Hi Dudley,
>
> On Wed, Apr 16, 2014 at 08:35:52AM +0000, Dudley Du wrote:
> > Re-architecture the driver to support function pointers, so it can support and integrate new devices later in one driver.
> > Including use async thread in device proble to speed up system boot time.
> > TEST=test on Chomebooks.
>
> There seems to be changes implementing aasync probing intermixed with the function pointers change, it had to be split out and justification needs to be provided - I am not quite convinced we should be doing this, at least not at individual driver level.
>
> Also instead of listing individual function pointers consider defining
>
> struct cyapa_ops {
>       void (*irq_handler)(struct cyapa *);
>       int (*set_power_mode)(struct cyapa *, u8, u16);
>       int (*bl_enter_func)(struct cyapa *);
>       ....
> };
>
> and use const pointer to it in cyapa_state. Then you can have gen3 and
> gen5 implementation separated into individual files and the rest forming cyapa core.
>
> Thanks.
>
> --
> Dmitry
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