linux-kernel - Re: [PATCH v1 1/1] iio: light: tsl2772: Make use of device properties

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Message-ID: <20220416121238.67708b6a@jic23-huawei>
Date:   Sat, 16 Apr 2022 12:12:38 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lars-Peter Clausen <lars@...afoo.de>,
        Brian Masney <bmasney@...hat.com>
Subject: Re: [PATCH v1 1/1] iio: light: tsl2772: Make use of device
 properties

On Wed, 13 Apr 2022 21:14:02 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> Convert the module to be property provider agnostic and allow
> it to be used on non-OF platforms.
> 
> While at it, reuse temporary device pointer in the same function.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
+CC Bryan as an FYI.

Applied to the togreg branch of iio.git and pushed out as testing for
all the normal reasons.

Thanks,

Jonathan


> ---
>  drivers/iio/light/tsl2772.c | 25 ++++++++++---------------
>  1 file changed, 10 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index 729f14d9f2a4..dd9051f1cc1a 100644
> --- a/drivers/iio/light/tsl2772.c
> +++ b/drivers/iio/light/tsl2772.c
> @@ -15,7 +15,9 @@
>  #include <linux/kernel.h>
>  #include <linux/module.h>
>  #include <linux/mutex.h>
> +#include <linux/property.h>
>  #include <linux/slab.h>
> +
>  #include <linux/iio/events.h>
>  #include <linux/iio/iio.h>
>  #include <linux/iio/sysfs.h>
> @@ -549,10 +551,10 @@ static int tsl2772_get_prox(struct iio_dev *indio_dev)
>  
>  static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
>  {
> -	struct device_node *of_node = chip->client->dev.of_node;
> +	struct device *dev = &chip->client->dev;
>  	int ret, tmp, i;
>  
> -	ret = of_property_read_u32(of_node, "led-max-microamp", &tmp);
> +	ret = device_property_read_u32(dev, "led-max-microamp", &tmp);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -563,20 +565,18 @@ static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
>  		}
>  	}
>  
> -	dev_err(&chip->client->dev, "Invalid value %d for led-max-microamp\n",
> -		tmp);
> +	dev_err(dev, "Invalid value %d for led-max-microamp\n", tmp);
>  
>  	return -EINVAL;
> -
>  }
>  
>  static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
>  {
> -	struct device_node *of_node = chip->client->dev.of_node;
> +	struct device *dev = &chip->client->dev;
>  	int i, ret, num_leds, prox_diode_mask;
>  	u32 leds[TSL2772_MAX_PROX_LEDS];
>  
> -	ret = of_property_count_u32_elems(of_node, "amstaos,proximity-diodes");
> +	ret = device_property_count_u32(dev, "amstaos,proximity-diodes");
>  	if (ret < 0)
>  		return ret;
>  
> @@ -584,12 +584,9 @@ static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
>  	if (num_leds > TSL2772_MAX_PROX_LEDS)
>  		num_leds = TSL2772_MAX_PROX_LEDS;
>  
> -	ret = of_property_read_u32_array(of_node, "amstaos,proximity-diodes",
> -					 leds, num_leds);
> +	ret = device_property_read_u32_array(dev, "amstaos,proximity-diodes", leds, num_leds);
>  	if (ret < 0) {
> -		dev_err(&chip->client->dev,
> -			"Invalid value for amstaos,proximity-diodes: %d.\n",
> -			ret);
> +		dev_err(dev, "Invalid value for amstaos,proximity-diodes: %d.\n", ret);
>  		return ret;
>  	}
>  
> @@ -600,9 +597,7 @@ static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
>  		else if (leds[i] == 1)
>  			prox_diode_mask |= TSL2772_DIODE1;
>  		else {
> -			dev_err(&chip->client->dev,
> -				"Invalid value %d in amstaos,proximity-diodes.\n",
> -				leds[i]);
> +			dev_err(dev, "Invalid value %d in amstaos,proximity-diodes.\n", leds[i]);
>  			return -EINVAL;
>  		}
>  	}