linux-kernel - Re: [PATCH] drivers: Update drv260x driver

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Date:   Thu, 8 Dec 2016 14:21:31 -0600
From:   Dan Murphy <dmurphy@...com>
To:     Jingkui Wang <jkwang@...gle.com>, <linux-input@...r.kernel.org>
CC:     <dmitry.torokhov@...il.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: Update drv260x driver

On 12/08/2016 02:17 PM, Jingkui Wang wrote:
> Update driver drv260x to use generic device properties
> Remove platform data
>
> Signed-off-by: Jingkui Wang <jkwang@...gle.com>
> ---
>  drivers/input/misc/drv260x.c | 43 ++++++++-----------------------------------
>  1 file changed, 8 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
> index 2adfd86c..4f448ba 100644
> --- a/drivers/input/misc/drv260x.c
> +++ b/drivers/input/misc/drv260x.c
> @@ -19,7 +19,6 @@
>  #include <linux/input.h>
>  #include <linux/module.h>
>  #include <linux/of_gpio.h>
> -#include <linux/platform_device.h>
>  #include <linux/regmap.h>
>  #include <linux/slab.h>
>  #include <linux/delay.h>
> @@ -27,7 +26,6 @@
>  #include <linux/regulator/consumer.h>
>  
>  #include <dt-bindings/input/ti-drv260x.h>
> -#include <linux/platform_data/drv260x-pdata.h>

Should we remove the header from the repo too?  If we are no longer needing it
we should remove the file.

Dan

>  
>  #define DRV260X_STATUS		0x0
>  #define DRV260X_MODE		0x1
> @@ -468,52 +466,39 @@ static const struct regmap_config drv260x_regmap_config = {
>  	.cache_type = REGCACHE_NONE,
>  };
>  
> -#ifdef CONFIG_OF
> -static int drv260x_parse_dt(struct device *dev,
> +static int drv260x_read_device_property(struct device *dev,
>  			    struct drv260x_data *haptics)
>  {
> -	struct device_node *np = dev->of_node;
>  	unsigned int voltage;
>  	int error;
>  
> -	error = of_property_read_u32(np, "mode", &haptics->mode);
> +	error = device_property_read_u32(dev, "mode", &haptics->mode);
>  	if (error) {
>  		dev_err(dev, "%s: No entry for mode\n", __func__);
>  		return error;
>  	}
>  
> -	error = of_property_read_u32(np, "library-sel", &haptics->library);
> +	error = device_property_read_u32(dev, "library-sel", &haptics->library);
>  	if (error) {
>  		dev_err(dev, "%s: No entry for library selection\n",
>  			__func__);
>  		return error;
>  	}
>  
> -	error = of_property_read_u32(np, "vib-rated-mv", &voltage);
> +	error = device_property_read_u32(dev, "vib-rated-mv", &voltage);
>  	if (!error)
>  		haptics->rated_voltage = drv260x_calculate_voltage(voltage);
>  
> -
> -	error = of_property_read_u32(np, "vib-overdrive-mv", &voltage);
> +	error = device_property_read_u32(dev, "vib-overdrive-mv", &voltage);
>  	if (!error)
>  		haptics->overdrive_voltage = drv260x_calculate_voltage(voltage);
>  
>  	return 0;
>  }
> -#else
> -static inline int drv260x_parse_dt(struct device *dev,
> -				   struct drv260x_data *haptics)
> -{
> -	dev_err(dev, "no platform data defined\n");
> -
> -	return -EINVAL;
> -}
> -#endif
>  
>  static int drv260x_probe(struct i2c_client *client,
>  			 const struct i2c_device_id *id)
>  {
> -	const struct drv260x_platform_data *pdata = dev_get_platdata(&client->dev);
>  	struct drv260x_data *haptics;
>  	int error;
>  
> @@ -524,21 +509,9 @@ static int drv260x_probe(struct i2c_client *client,
>  	haptics->rated_voltage = DRV260X_DEF_OD_CLAMP_VOLT;
>  	haptics->rated_voltage = DRV260X_DEF_RATED_VOLT;
>  
> -	if (pdata) {
> -		haptics->mode = pdata->mode;
> -		haptics->library = pdata->library_selection;
> -		if (pdata->vib_overdrive_voltage)
> -			haptics->overdrive_voltage = drv260x_calculate_voltage(pdata->vib_overdrive_voltage);
> -		if (pdata->vib_rated_voltage)
> -			haptics->rated_voltage = drv260x_calculate_voltage(pdata->vib_rated_voltage);
> -	} else if (client->dev.of_node) {
> -		error = drv260x_parse_dt(&client->dev, haptics);
> -		if (error)
> -			return error;
> -	} else {
> -		dev_err(&client->dev, "Platform data not set\n");
> -		return -ENODEV;
> -	}
> +	error = drv260x_read_device_property(&client->dev, haptics);
> +	if (error)
> +		return error;
>  
>  
>  	if (haptics->mode < DRV260X_LRA_MODE ||


-- 
------------------
Dan Murphy