linux-kernel - Re: [PATCH v1 02/10] include: media: Add Renesas CEU driver interface

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Date:   Mon, 11 Dec 2017 16:26:27 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Sakari Ailus <sakari.ailus@....fi>
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>, magnus.damm@...il.com,
        geert@...der.be, mchehab@...nel.org, hverkuil@...all.nl,
        linux-renesas-soc@...r.kernel.org, linux-media@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 02/10] include: media: Add Renesas CEU driver interface

Hi Sakari,

On Wednesday, 15 November 2017 14:36:33 EET Sakari Ailus wrote:
> On Wed, Nov 15, 2017 at 11:55:55AM +0100, Jacopo Mondi wrote:
> > Add renesas-ceu header file.
> > 
> > Do not remove the existing sh_mobile_ceu.h one as long as the original
> > driver does not go away.
> 
> Hmm. This isn't really not about not removing a file but adding a new one.
> Do you really need it outside the driver's own directory?

The file defines platform data structures that are needed for arch/sh/.

> > Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
> > ---
> > 
> >  include/media/drv-intf/renesas-ceu.h | 23 +++++++++++++++++++++++
> >  1 file changed, 23 insertions(+)
> >  create mode 100644 include/media/drv-intf/renesas-ceu.h
> > 
> > diff --git a/include/media/drv-intf/renesas-ceu.h
> > b/include/media/drv-intf/renesas-ceu.h new file mode 100644
> > index 0000000..f2da78c
> > --- /dev/null
> > +++ b/include/media/drv-intf/renesas-ceu.h
> > @@ -0,0 +1,23 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +#ifndef __ASM_RENESAS_CEU_H__
> > +#define __ASM_RENESAS_CEU_H__
> > +
> > +#include <media/v4l2-mediabus.h>

I don't think you need this.

> > +#define CEU_FLAG_PRIMARY_SENS	BIT(0)
> > +#define CEU_MAX_SENS		2

I assume SENS stands for sensor. As other sources than sensors can be 
supported (video decoders for instance), I would name this CEU_MAX_SUBDEVS, 
CEU_MAX_INPUTS or something similar.

> > +
> > +struct ceu_async_subdev {
> > +	unsigned long flags;
> > +	unsigned char bus_width;
> > +	unsigned char bus_shift;
> > +	unsigned int i2c_adapter_id;
> > +	unsigned int i2c_address;
> > +};
> > +
> > +struct ceu_info {
> > +	unsigned int num_subdevs;
> > +	struct ceu_async_subdev subdevs[CEU_MAX_SENS];
> > +};
> > +
> > +#endif /* __ASM_RENESAS_CEU_H__ */
> > --
> > 2.7.4


-- 
Regards,

Laurent Pinchart