From 24003d501f112a9827aa8c59c00e12b2d5cbddf6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Wed, 14 Feb 2024 10:30:49 +0100 Subject: [PATCH] pwm: Provide wrappers for storing and getting driver private data MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit These functions are useful to store and query driver private data depending on the pwm_chip. After struct pwm_chip got its own struct device, this can make use of dev_get_drvdata() and dev_set_drvdata() on that device. These functions are required already now to convert drivers to pwmchip_alloc() which must happen before changing pwm_chip::dev. Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/67514cdf29d29bd8b4ad8d44fac87f6ae6dca1e5.1707900770.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König --- include/linux/pwm.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 07af6910bdce..29a7d9140f77 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -272,6 +272,7 @@ struct pwm_ops { * @npwm: number of PWMs controlled by this chip * @of_xlate: request a PWM device given a device tree PWM specifier * @atomic: can the driver's ->apply() be called in atomic context + * @driver_data: Private pointer for driver specific info * @pwms: array of PWM devices allocated by the framework */ struct pwm_chip { @@ -286,6 +287,7 @@ struct pwm_chip { bool atomic; /* only used internally by the PWM framework */ + void *driver_data; struct pwm_device *pwms; }; @@ -294,6 +296,24 @@ static inline struct device *pwmchip_parent(const struct pwm_chip *chip) return chip->dev; } +static inline void *pwmchip_get_drvdata(struct pwm_chip *chip) +{ + /* + * After pwm_chip got a dedicated struct device, this can be replaced by + * dev_get_drvdata(&chip->dev); + */ + return chip->driver_data; +} + +static inline void pwmchip_set_drvdata(struct pwm_chip *chip, void *data) +{ + /* + * After pwm_chip got a dedicated struct device, this can be replaced by + * dev_set_drvdata(&chip->dev, data); + */ + chip->driver_data = data; +} + #if IS_ENABLED(CONFIG_PWM) /* PWM user APIs */ int pwm_apply_might_sleep(struct pwm_device *pwm, const struct pwm_state *state); -- 2.20.1