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

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Message-ID: <CACMZmvVLAimpC7mMKocmmD9nDOdVkv=kMaNJfxU8rg+NonpWBQ@mail.gmail.com>
Date:   Fri, 9 Dec 2016 13:33:10 -0800
From:   Jingkui Wang <jkwang@...gle.com>
To:     Dan Murphy <dmurphy@...com>
Cc:     linux-input@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: Update drv260x driver

Make sense. Will do.
Jingkui Wang

On Thu, Dec 8, 2016 at 12:21 PM, Dan Murphy <dmurphy@...com> wrote:
> 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
>