Re: [PATCH] driver: add function to look up device by DT node

[Peter Mamonov <pmamonov@gmail.com>]

Hi, Lucas,

On Thu, Dec 19, 2019 at 11:10:11AM +0100, Lucas Stach wrote:
> Useful if we need to remove a deivce from the Barebox internal DT.
> 
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> ---
> This is a prerequisite for "ARM: zii-imx8mq-dev: add DT fixups", which
> I missed to send out in the series.
> ---
>  drivers/base/driver.c | 12 ++++++++++++
>  include/driver.h      |  1 +
>  2 files changed, 13 insertions(+)
> 
> diff --git a/drivers/base/driver.c b/drivers/base/driver.c
> index eec2a2d8a2a5..437b0162d3f7 100644
> --- a/drivers/base/driver.c
> +++ b/drivers/base/driver.c
> @@ -70,6 +70,18 @@ static struct device_d *get_device_by_name_id(const char *name, int id)
>  	return NULL;
>  }
>  
> +struct device_d *get_device_by_device_node(struct device_node *np)
> +{
> +	struct device_d *dev;
> +
> +	for_each_device(dev) {
> +		if(dev->device_node == np)
> +			return dev;
> +	}
> +
> +	return NULL;
> +}
> +

This is already implemented in `of_find_device_by_node`.

Regards,
Peter

>  int get_free_deviceid(const char *name_template)
>  {
>  	int i = 0;
> diff --git a/include/driver.h b/include/driver.h
> index ad59ce90c3a3..4e3b2443a708 100644
> --- a/include/driver.h
> +++ b/include/driver.h
> @@ -170,6 +170,7 @@ int unregister_device(struct device_d *);
>  struct device_d *get_device_by_type(ulong type, struct device_d *last);
>  struct device_d *get_device_by_id(const char *id);
>  struct device_d *get_device_by_name(const char *name);
> +struct device_d *get_device_by_device_node(struct device_node *np);
>  
>  /* Find a free device id from the given template. This is archieved by
>   * appending a number to the template. Dynamically created devices should
> -- 
> 2.20.1
> 
> 
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> barebox@lists.infradead.org
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