[PATCH v5 003/111] pwm: Provide a macro to get the parent device of a given chip
AngeloGioacchino Del Regno
angelogioacchino.delregno at collabora.com
Thu Jan 25 06:14:35 PST 2024
Il 25/01/24 13:08, Uwe Kleine-König ha scritto:
> Currently a pwm_chip stores in its struct device *dev member a pointer
> to the parent device. Preparing a change that embeds a full struct
> device in struct pwm_chip, this accessor macro should be used in all
> drivers directly accessing chip->dev now. This way struct pwm_chip and
> this macro can be changed without having to touch all drivers in the
> same change set.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> ---
> include/linux/pwm.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/pwm.h b/include/linux/pwm.h
> index 8ffe9ae7a23a..d7966918f301 100644
> --- a/include/linux/pwm.h
> +++ b/include/linux/pwm.h
> @@ -289,6 +289,11 @@ struct pwm_chip {
> struct pwm_device *pwms;
> };
>
> +static inline struct device *pwmchip_parent(struct pwm_chip *chip)
> +{
> + return chip->dev;
> +}
> +
> #if IS_ENABLED(CONFIG_PWM)
> /* PWM user APIs */
> int pwm_apply_might_sleep(struct pwm_device *pwm, const struct pwm_state *state);
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