linux-kernel - Re: [PATCH v2 1/1] iio: adc: twl4030-madc: Make use of device properties

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Date: Sun, 10 Mar 2024 15:16:54 +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>, Uwe Kleine-König
 <u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH v2 1/1] iio: adc: twl4030-madc: Make use of device
 properties

On Mon,  4 Mar 2024 16:40:06 +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.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Thanks Andy,

Applied this to the togreg-cleanup branch of iio.git.

I wondered whether there were any users of the platform_data /
board file path left. Seems that the support for the parent mfd
platform data was ripped out by Uwe in 2022 but not the sub drivers.

Anyone want to do the work to drop it from here and the other sub drivers?

Jonathan

> ---
> v2: converted leftover (Jonathan)
>  drivers/iio/adc/twl4030-madc.c | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
> index 4a247ca25a44..0253064fadec 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>
> @@ -744,14 +745,14 @@ static int twl4030_madc_set_power(struct twl4030_madc_data *madc, int on)
>   */
>  static int twl4030_madc_probe(struct platform_device *pdev)
>  {
> +	struct device *dev = &pdev->dev;
> +	struct twl4030_madc_platform_data *pdata = dev_get_platdata(dev);
>  	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;
>  
> -	if (!pdata && !np) {
> +	if (!pdata && !dev_fwnode(dev)) {
>  		dev_err(&pdev->dev, "neither platform data nor Device Tree node available\n");
>  		return -EINVAL;
>  	}
> @@ -779,7 +780,7 @@ 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(dev,
>  				       "ti,system-uses-second-madc-irq");
>  
>  	madc->imr = madc->use_second_irq ? TWL4030_MADC_IMR2 :
> @@ -905,20 +906,18 @@ 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,
>  	},
>  };
>