linux-kernel - Re: [PATCH] staging: iio: ad7746: add device tree support

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Date:   Sun, 19 May 2019 12:02:50 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     João Seckler <joaoseckler@...il.com>
Cc:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: iio: ad7746: add device tree support

On Sat, 18 May 2019 19:27:33 -0300
João Seckler <joaoseckler@...il.com> wrote:

> Add a of_device_id struct variable and subsequent call to
> MODULE_DEVICE_TABLE macro to support device tree.
> 
> Signed-off-by: João Seckler <joaoseckler@...il.com>
> Signed-off-by: Lucas Oshiro <lucasseikioshiro@...il.com>
> Co-developed-by: Lucas Oshiro <lucasseikioshiro@...il.com>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.

For a future improvement, try to explain the 'why' rather than
'what' of a patch in the description.   This particular change
is so common I don't mind that much, but it is a good habit to
get into!

Thanks,

Jonathan
> ---
>  drivers/staging/iio/cdc/ad7746.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c
> index 47610d863908..21527d84f940 100644
> --- a/drivers/staging/iio/cdc/ad7746.c
> +++ b/drivers/staging/iio/cdc/ad7746.c
> @@ -748,9 +748,19 @@ static const struct i2c_device_id ad7746_id[] = {
>  
>  MODULE_DEVICE_TABLE(i2c, ad7746_id);
>  
> +static const struct of_device_id ad7746_of_match[] = {
> +	{ .compatible = "adi,ad7745" },
> +	{ .compatible = "adi,ad7746" },
> +	{ .compatible = "adi,ad7747" },
> +	{ },
> +};
> +
> +MODULE_DEVICE_TABLE(of, ad7746_of_match);
> +
>  static struct i2c_driver ad7746_driver = {
>  	.driver = {
>  		.name = KBUILD_MODNAME,
> +		.of_match_table = ad7746_of_match,
>  	},
>  	.probe = ad7746_probe,
>  	.id_table = ad7746_id,