lkml.org 
[lkml]   [2012]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] serial: i.MX: evaluate linux,stdout-path property
On Thu, Oct 04, 2012 at 07:44:45AM -0500, Rob Herring wrote:
> On 10/04/2012 05:39 AM, Sascha Hauer wrote:
> > devicetrees may have the linux,stdout-path property to specify the
> > console. This patch adds support to the i.MX serial driver for this.
> >
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> >
> > I was originally looking for a more generic way to handle this, but
> > since a struct console has no device associated to it, it's not
> > possible to match a console with a device in a generic way. So we
>
> Could we add a device ptr to struct console?

I think not. Looking at some drivers they register a console very early
when there is no device available (even if there will be a device later
when the uart driver probes)

> > #ifdef CONFIG_OF
> > /*
> > + * Check if this device matches the linux,stdout-path property
> > + * in the chosen node. return true if yes, false otherwise
> > + */
> > +static int serial_imx_is_stdoutpath(struct platform_device *pdev)
>
> Couldn't this function be generic? Just move
> IS_ENABLED(CONFIG_SERIAL_IMX_CONSOLE) outside this function. Arguably,
> the presence of the property or not could replace the config option all
> together.
>
> And use a struct device so this can work with devices other than
> platform devices (i.e. amba).

Ok, makes sense.

Sascha

--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |


\
 
 \ /
  Last update: 2012-10-04 15:41    [W:2.936 / U:0.560 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site