Subject: Re: [PATCH 5/5] net: rfkill: gpio: add ACPI support

From: Mika Westerberg <[email-masked]>
Date: Thu, 17 Oct 2013 10:44:26 +0300

On Wed, Oct 16, 2013 at 10:55:01PM +0200, Rafael J. Wysocki wrote:
> On Wednesday, October 16, 2013 01:53:43 PM Heikki Krogerus wrote:
> > Including ACPI ID for Broadcom GPS receiver BCM4752.
> > 
> > Signed-off-by: Heikki Krogerus <[email-masked]>
> > ---
> >  net/rfkill/rfkill-gpio.c | 31 ++++++++++++++++++++++++++++++-
> >  1 file changed, 30 insertions(+), 1 deletion(-)
> > 
> > diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
> > index 2dd78c6..5620d3c 100644
> > --- a/net/rfkill/rfkill-gpio.c
> > +++ b/net/rfkill/rfkill-gpio.c
> > @@ -24,6 +24,8 @@
> >  #include <linux/platform_device.h>
> >  #include <linux/clk.h>
> >  #include <linux/slab.h>
> > +#include <linux/acpi.h>
> > +#include <linux/acpi_gpio.h>
> >  
> >  #include <linux/rfkill-gpio.h>
> >  
> > @@ -70,6 +72,23 @@ static const struct rfkill_ops rfkill_gpio_ops = {
> >  	.set_block = rfkill_gpio_set_power,
> >  };
> >  
> > +static int rfkill_gpio_acpi_probe(struct device *dev,
> > +				  struct rfkill_gpio_data *rfkill)
> > +{
> > +	const struct acpi_device_id *id;
> > +
> > +	id = acpi_match_device(dev->driver->acpi_match_table, dev);
> > +	if (!id)
> > +		return -ENODEV;
> > +
> > +	rfkill->name = dev_name(dev);
> > +	rfkill->type = (unsigned)id->driver_data;
> > +	rfkill->reset_gpio = acpi_get_gpio_by_index(dev, 0, NULL);
> > +	rfkill->shutdown_gpio = acpi_get_gpio_by_index(dev, 1, NULL);
> > +
> > +	return 0;
> > +}
> > +
> >  static int rfkill_gpio_probe(struct platform_device *pdev)
> >  {
> >  	struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
> > @@ -82,7 +101,11 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
> >  	if (!rfkill)
> >  		return -ENOMEM;
> >  
> > -	if (pdata) {
> > +	if (ACPI_HANDLE(&pdev->dev)) {
> > +		ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill);
> > +		if (ret)
> > +			return ret;
> > +	} else if (pdata) {
> >  		clk_name = pdata->power_clk_name;
> >  		rfkill->name = pdata->name;
> >  		rfkill->type = pdata->type;
> > @@ -170,12 +193,18 @@ static int rfkill_gpio_remove(struct platform_device *pdev)
> >  	return 0;
> >  }
> >  
> > +static const struct acpi_device_id rfkill_acpi_match[] = {
> > +	{ "BCM4752", RFKILL_TYPE_GPS },
> > +	{ },
> > +};
> > +
> >  static struct platform_driver rfkill_gpio_driver = {
> >  	.probe = rfkill_gpio_probe,
> >  	.remove = rfkill_gpio_remove,
> >  	.driver = {
> >  		.name = "rfkill_gpio",
> >  		.owner = THIS_MODULE,
> > +		.acpi_match_table = ACPI_PTR(rfkill_acpi_match),
> >  	},
> >  };
> 
> Looks good to me.
> 
> Has Mika seen this?

Yes, saw it now and looks good to me as well.

Reviewed-by: Mika Westerberg <[email-masked]>

for the whole series, for what it's worth.