linux-kernel - Re: [PATCH v1 1/1] iio: adc: twl4030-madc: Make use of device properties

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Date: Sun, 3 Mar 2024 13:50:28 +0000
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>
Subject: Re: [PATCH v1 1/1] iio: adc: twl4030-madc: Make use of device
 properties

On Wed, 28 Feb 2024 22:59:27 +0200
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.
> 
> Include mod_devicetable.h explicitly to replace the dropped of.h
> which included mod_devicetable.h indirectly.

It seems fairly implausible anyone will use this ancient device
with any other firmware, but as conversion is trivial and provides
one less place for people to copy of specific handling from
i tried applying it.

However it doesn't build...

drivers/iio/adc/twl4030-madc.c:754:24: error: ‘np’ undeclared (first use in this function); did you mean ‘up’?
  754 |         if (!pdata && !np) {
      |                        ^~
      |                        up


I guess !dev_fwnode(dev) instead?

Jonathan
 
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/iio/adc/twl4030-madc.c | 14 ++++++--------
>  1 file changed, 6 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
> index 4a247ca25a44..a7b6b81014de 100644
> --- a/drivers/iio/adc/twl4030-madc.c
> +++ b/drivers/iio/adc/twl4030-madc.c
> @@ -19,10 +19,12 @@
>  #include <linux/interrupt.h>
>  #include <linux/kernel.h>
>  #include <linux/delay.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>
>  #include <linux/platform_device.h>
> +#include <linux/property.h>
>  #include <linux/slab.h>
>  #include <linux/mfd/twl.h>
> -#include <linux/module.h>
>  #include <linux/stddef.h>
>  #include <linux/mutex.h>
>  #include <linux/bitops.h>
> @@ -30,7 +32,6 @@
>  #include <linux/types.h>
>  #include <linux/gfp.h>
>  #include <linux/err.h>
> -#include <linux/of.h>
>  #include <linux/regulator/consumer.h>
>  
>  #include <linux/iio/iio.h>
> @@ -746,7 +747,6 @@ static int twl4030_madc_probe(struct platform_device *pdev)
>  {
>  	struct twl4030_madc_data *madc;
>  	struct twl4030_madc_platform_data *pdata = dev_get_platdata(&pdev->dev);
> -	struct device_node *np = pdev->dev.of_node;
>  	int irq, ret;
>  	u8 regval;
>  	struct iio_dev *iio_dev = NULL;
> @@ -779,7 +779,7 @@ static int twl4030_madc_probe(struct platform_device *pdev)
>  	if (pdata)
>  		madc->use_second_irq = (pdata->irq_line != 1);
>  	else
> -		madc->use_second_irq = of_property_read_bool(np,
> +		madc->use_second_irq = device_property_read_bool(&pdev->dev,
>  				       "ti,system-uses-second-madc-irq");
>  
>  	madc->imr = madc->use_second_irq ? TWL4030_MADC_IMR2 :
> @@ -905,20 +905,18 @@ static void twl4030_madc_remove(struct platform_device *pdev)
>  	regulator_disable(madc->usb3v1);
>  }
>  
> -#ifdef CONFIG_OF
>  static const struct of_device_id twl_madc_of_match[] = {
>  	{ .compatible = "ti,twl4030-madc", },
> -	{ },
> +	{ }
>  };
>  MODULE_DEVICE_TABLE(of, twl_madc_of_match);
> -#endif
>  
>  static struct platform_driver twl4030_madc_driver = {
>  	.probe = twl4030_madc_probe,
>  	.remove_new = twl4030_madc_remove,
>  	.driver = {
>  		   .name = "twl4030_madc",
> -		   .of_match_table = of_match_ptr(twl_madc_of_match),
> +		   .of_match_table = twl_madc_of_match,
>  	},
>  };
>