linux-kernel - RE: [PATCH 1/3] input: cyapa: add regulator vcc support

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Date:	Fri, 31 Jul 2015 01:45:46 +0000
From:	Dudley Du <dudl@...ress.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	"mark.rutland@....com" <mark.rutland@....com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"bleung@...gle.com" <bleung@...gle.com>,
	"jmmahler@...il.com" <jmmahler@...il.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/3] input: cyapa: add regulator vcc support

Dmitry,

Thank your very much.

Thanks,
Dudley

> -----Original Message-----
> From: Dmitry Torokhov [mailto:dmitry.torokhov@...il.com]
> Sent: 2015?7?31? 2:33
> To: Dudley Du
> Cc: mark.rutland@....com; robh+dt@...nel.org; bleung@...gle.com;
> jmmahler@...il.com; devicetree@...r.kernel.org; linux-input@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 1/3] input: cyapa: add regulator vcc support
>
> On Fri, Jul 24, 2015 at 01:05:57PM +0800, Dudley Du wrote:
> > Add power management regulator vcc support.
> > It's described to be supported in the cypress,cyapa.txt document.
> >
> > Signed-off-by: Dudley Du <dudl@...ress.com>
>
> It looks like we were missing linux/regulator/consumer.h include, I
> added it and applied.
>
> Thanks.
>
> > ---
> >  drivers/input/mouse/cyapa.c | 28 ++++++++++++++++++++++++++++
> >  drivers/input/mouse/cyapa.h |  1 +
> >  2 files changed, 29 insertions(+)
> >
> > diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c
> > index 6195ccb..2159c5e 100644
> > --- a/drivers/input/mouse/cyapa.c
> > +++ b/drivers/input/mouse/cyapa.c
> > @@ -1241,6 +1241,13 @@ static void cyapa_remove_sysfs_group(void *data)
> >  sysfs_remove_group(&cyapa->client->dev.kobj, &cyapa_sysfs_group);
> >  }
> >
> > +static void cyapa_disable_regulator(void *data)
> > +{
> > +struct cyapa *cyapa = data;
> > +
> > +regulator_disable(cyapa->vcc);
> > +}
> > +
> >  static int cyapa_probe(struct i2c_client *client,
> >         const struct i2c_device_id *dev_id)
> >  {
> > @@ -1274,6 +1281,27 @@ static int cyapa_probe(struct i2c_client *client,
> >  sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr,
> >  client->addr);
> >
> > +cyapa->vcc = devm_regulator_get(dev, "vcc");
> > +if (IS_ERR(cyapa->vcc)) {
> > +error = PTR_ERR(cyapa->vcc);
> > +dev_err(dev, "failed to get vcc regulator: %d\n", error);
> > +return error;
> > +}
> > +
> > +error = regulator_enable(cyapa->vcc);
> > +if (error) {
> > +dev_err(dev, "failed to enable regulator: %d\n", error);
> > +return error;
> > +}
> > +
> > +error = devm_add_action(dev, cyapa_disable_regulator, cyapa);
> > +if (error) {
> > +cyapa_disable_regulator(cyapa);
> > +dev_err(dev, "failed to add disable regulator action: %d\n",
> > +error);
> > +return error;
> > +}
> > +
> >  error = cyapa_initialize(cyapa);
> >  if (error) {
> >  dev_err(dev, "failed to detect and initialize tp device.\n");
> > diff --git a/drivers/input/mouse/cyapa.h b/drivers/input/mouse/cyapa.h
> > index af12536..b812bba 100644
> > --- a/drivers/input/mouse/cyapa.h
> > +++ b/drivers/input/mouse/cyapa.h
> > @@ -321,6 +321,7 @@ struct cyapa {
> >  u8 status[BL_STATUS_SIZE];
> >  bool operational; /* true: ready for data reporting; false: not. */
> >
> > +struct regulator *vcc;
> >  struct i2c_client *client;
> >  struct input_dev *input;
> >  char phys[32];/* Device physical location */
> > --
> > 1.9.1
> >
> >
> > ---------------------------------------------------------------
> > This message and any attachments may contain Cypress (or its
> > subsidiaries) confidential information. If it has been received
> > in error, please advise the sender and immediately delete this
> > message.
> > ---------------------------------------------------------------
> >
>
> --
> Dmitry

This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message.
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