linux-kernel - Re: [PATCH 1/3] input: edt-ft5x06: Add support for regulator

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Date:   Tue, 29 Oct 2019 12:21:29 +0100
From:   Ondřej Jirman <megous@...ous.com>
To:     Marco Felsch <m.felsch@...gutronix.de>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-sunxi@...glegroups.com, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mylène Josserand <mylene.josserand@...tlin.com>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/3] input: edt-ft5x06: Add support for regulator

Hi Marco,

On Tue, Oct 29, 2019 at 09:55:45AM +0100, Marco Felsch wrote:
> Hi Dmitry,
> 
> On 19-10-28 21:12, Dmitry Torokhov wrote:
> > On Tue, Oct 29, 2019 at 01:58:04AM +0100, Ondrej Jirman wrote:
> > > From: Mylène Josserand <mylene.josserand@...tlin.com>
> > > 
> > > Add the support for enabling optional regulator that may be used as VCC
> > > source.
> > > 
> > > Signed-off-by: Ondrej Jirman <megous@...ous.com>
> > > Signed-off-by: Mylène Josserand <mylene.josserand@...tlin.com>
> > 
> > Applied, thank you.
> 
> What happens with my vdd patches?

Sorry for not noticing your patches, I was only aware of Mylène's older series.
It looks like you can just skip regulator enable support from your series, and
re-send the deep-sleep mechanism and wakeup source patches only.

I'll test it with my board, and give you a tested-by.

thank you and regards,
	o.

> Regards,
>   Marco
> 
> > 
> > > ---
> > >  drivers/input/touchscreen/edt-ft5x06.c | 30 ++++++++++++++++++++++++++
> > >  1 file changed, 30 insertions(+)
> > > 
> > > diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
> > > index 5525f1fb1526..d61731c0037d 100644
> > > --- a/drivers/input/touchscreen/edt-ft5x06.c
> > > +++ b/drivers/input/touchscreen/edt-ft5x06.c
> > > @@ -28,6 +28,7 @@
> > >  #include <linux/input/mt.h>
> > >  #include <linux/input/touchscreen.h>
> > >  #include <asm/unaligned.h>
> > > +#include <linux/regulator/consumer.h>
> > >  
> > >  #define WORK_REGISTER_THRESHOLD		0x00
> > >  #define WORK_REGISTER_REPORT_RATE	0x08
> > > @@ -88,6 +89,7 @@ struct edt_ft5x06_ts_data {
> > >  	struct touchscreen_properties prop;
> > >  	u16 num_x;
> > >  	u16 num_y;
> > > +	struct regulator *vcc;
> > >  
> > >  	struct gpio_desc *reset_gpio;
> > >  	struct gpio_desc *wake_gpio;
> > > @@ -1036,6 +1038,13 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
> > >  	}
> > >  }
> > >  
> > > +static void edt_ft5x06_disable_regulator(void *arg)
> > > +{
> > > +	struct edt_ft5x06_ts_data *data = arg;
> > > +
> > > +	regulator_disable(data->vcc);
> > > +}
> > > +
> > >  static int edt_ft5x06_ts_probe(struct i2c_client *client,
> > >  					 const struct i2c_device_id *id)
> > >  {
> > > @@ -1064,6 +1073,27 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
> > >  
> > >  	tsdata->max_support_points = chip_data->max_support_points;
> > >  
> > > +	tsdata->vcc = devm_regulator_get(&client->dev, "vcc");
> > > +	if (IS_ERR(tsdata->vcc)) {
> > > +		error = PTR_ERR(tsdata->vcc);
> > > +		if (error != -EPROBE_DEFER)
> > > +			dev_err(&client->dev,
> > > +				"failed to request regulator: %d\n", error);
> > > +		return error;
> > > +	}
> > > +
> > > +	error = regulator_enable(tsdata->vcc);
> > > +	if (error < 0) {
> > > +		dev_err(&client->dev, "failed to enable vcc: %d\n", error);
> > > +		return error;
> > > +	}
> > > +
> > > +	error = devm_add_action_or_reset(&client->dev,
> > > +					 edt_ft5x06_disable_regulator,
> > > +					 tsdata);
> > > +	if (error)
> > > +		return error;
> > > +
> > >  	tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
> > >  						     "reset", GPIOD_OUT_HIGH);
> > >  	if (IS_ERR(tsdata->reset_gpio)) {
> > > -- 
> > > 2.23.0
> > > 
> > 
> > -- 
> > Dmitry
> > 
> 
> -- 
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