linux-kernel - Re: [PATCH resend v1 5/7] pps: clients: gpio: Make use of device properties

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Date:   Tue, 9 Mar 2021 13:27:18 +0100
From:   Rodolfo Giometti <giometti@...eenne.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Cc:     Ryan Govostes <rgovostes@...i.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH resend v1 5/7] pps: clients: gpio: Make use of device
 properties

On 09/03/21 12:24, Andy Shevchenko wrote:
> Device property API allows to gather device resources from different sources,
> such as ACPI. Convert the drivers to unleash the power of device property API.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/pps/clients/pps-gpio.c | 17 +++++++----------
>  1 file changed, 7 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c
> index 291240dce79e..c6db3a3b257b 100644
> --- a/drivers/pps/clients/pps-gpio.c
> +++ b/drivers/pps/clients/pps-gpio.c
> @@ -12,14 +12,14 @@
>  #include <linux/init.h>
>  #include <linux/kernel.h>
>  #include <linux/interrupt.h>
> +#include <linux/mod_devicetable.h>
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/pps_kernel.h>
>  #include <linux/gpio/consumer.h>
>  #include <linux/list.h>
> -#include <linux/of_device.h>
> -#include <linux/of_gpio.h>
> +#include <linux/property.h>
>  #include <linux/timer.h>
>  #include <linux/jiffies.h>
>  
> @@ -102,7 +102,6 @@ static void pps_gpio_echo_timer_callback(struct timer_list *t)
>  static int pps_gpio_setup(struct platform_device *pdev)
>  {
>  	struct pps_gpio_device_data *data = platform_get_drvdata(pdev);
> -	struct device_node *np = pdev->dev.of_node;
>  	int ret;
>  	u32 value;
>  
> @@ -121,26 +120,24 @@ static int pps_gpio_setup(struct platform_device *pdev)
>  				     "failed to request ECHO GPIO\n");
>  
>  	if (data->echo_pin) {
> -		ret = of_property_read_u32(np,
> -			"echo-active-ms",
> -			&value);
> +		ret = device_property_read_u32(&pdev->dev, "echo-active-ms", &value);
>  		if (ret) {
>  			dev_err(&pdev->dev,
> -				"failed to get echo-active-ms from OF\n");
> +				"failed to get echo-active-ms from FW\n");
>  			return ret;
>  		}
>  		data->echo_active_ms = value;
>  		/* sanity check on echo_active_ms */
>  		if (!data->echo_active_ms || data->echo_active_ms > 999) {
>  			dev_err(&pdev->dev,
> -				"echo-active-ms: %u - bad value from OF\n",
> +				"echo-active-ms: %u - bad value from FW\n",
>  				data->echo_active_ms);
>  			return -EINVAL;
>  		}
>  	}
>  
> -	if (of_property_read_bool(np, "assert-falling-edge"))
> -		data->assert_falling_edge = true;
> +	data->assert_falling_edge =
> +		device_property_read_bool(&pdev->dev, "assert-falling-edge");
>  	return 0;
>  }
>  
> 

Acked-by: Rodolfo Giometti <giometti@...eenne.com>

-- 
GNU/Linux Solutions                  e-mail: giometti@...eenne.com
Linux Device Driver                          giometti@...ux.it
Embedded Systems                     phone:  +39 349 2432127
UNIX programming                     skype:  rodolfo.giometti