linux-kernel - Re: [PATCH v1 14/22] iio: imu: st_lsm6dsx: Get platform data via dev_get

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Message-ID: <Zta2gaV_8qintFts@lore-rh-laptop>
Date: Tue, 3 Sep 2024 09:10:57 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	David Lechner <dlechner@...libre.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Michael Hennerich <michael.hennerich@...log.com>,
	Antoniu Miclaus <antoniu.miclaus@...log.com>,
	Jinjie Ruan <ruanjinjie@...wei.com>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Basavaraj Natikar <Basavaraj.Natikar@....com>,
	linux-input@...r.kernel.org, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, Jiri Kosina <jikos@...nel.org>,
	Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH v1 14/22] iio: imu: st_lsm6dsx: Get platform data via
 dev_get_platdata()

> From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
> Access to platform data via dev_get_platdata() getter to make code cleaner.
> 
> Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
> ---
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index ed0267929725..3958b5e1a3f6 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -2132,14 +2132,11 @@ st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
>  			const struct st_lsm6dsx_reg **drdy_reg)
>  {
>  	struct device *dev = hw->dev;
> +	const struct st_sensors_platform_data *pdata = dev_get_platdata(dev);

nit: I guess you can move pdata pointer in the 'if' block, since it is just
used there.

Regards,
Lorenzo

>  	int err = 0, drdy_pin;
>  
> -	if (device_property_read_u32(dev, "st,drdy-int-pin", &drdy_pin) < 0) {
> -		struct st_sensors_platform_data *pdata;
> -
> -		pdata = (struct st_sensors_platform_data *)dev->platform_data;
> +	if (device_property_read_u32(dev, "st,drdy-int-pin", &drdy_pin) < 0)
>  		drdy_pin = pdata ? pdata->drdy_int_pin : 1;
> -	}
>  
>  	switch (drdy_pin) {
>  	case 1:
> @@ -2162,14 +2159,13 @@ st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
>  static int st_lsm6dsx_init_shub(struct st_lsm6dsx_hw *hw)
>  {
>  	const struct st_lsm6dsx_shub_settings *hub_settings;
> -	struct st_sensors_platform_data *pdata;
>  	struct device *dev = hw->dev;
> +	const struct st_sensors_platform_data *pdata = dev_get_platdata(dev);
>  	unsigned int data;
>  	int err = 0;
>  
>  	hub_settings = &hw->settings->shub_settings;
>  
> -	pdata = (struct st_sensors_platform_data *)dev->platform_data;
>  	if (device_property_read_bool(dev, "st,pullups") ||
>  	    (pdata && pdata->pullups)) {
>  		if (hub_settings->pullup_en.sec_page) {
> @@ -2524,9 +2520,9 @@ static irqreturn_t st_lsm6dsx_sw_trigger_handler_thread(int irq,
>  
>  static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw)
>  {
> -	struct st_sensors_platform_data *pdata;
>  	const struct st_lsm6dsx_reg *reg;
>  	struct device *dev = hw->dev;
> +	const struct st_sensors_platform_data *pdata = dev_get_platdata(dev);
>  	unsigned long irq_type;
>  	bool irq_active_low;
>  	int err;
> @@ -2554,7 +2550,6 @@ static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw)
>  	if (err < 0)
>  		return err;
>  
> -	pdata = (struct st_sensors_platform_data *)dev->platform_data;
>  	if (device_property_read_bool(dev, "drive-open-drain") ||
>  	    (pdata && pdata->open_drain)) {
>  		reg = &hw->settings->irq_config.od;
> @@ -2639,7 +2634,7 @@ static int st_lsm6dsx_init_regulators(struct device *dev)
>  int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
>  		     struct regmap *regmap)
>  {
> -	struct st_sensors_platform_data *pdata = dev->platform_data;
> +	const struct st_sensors_platform_data *pdata = dev_get_platdata(dev);
>  	const struct st_lsm6dsx_shub_settings *hub_settings;
>  	struct st_lsm6dsx_hw *hw;
>  	const char *name = NULL;
> -- 
> 2.46.0
> 

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