Commit 9476cdfa authored by malattia@linux.it's avatar malattia@linux.it Committed by Len Brown
Browse files

sony-laptop: add edge modem support (also called WWAN) 



Some SZ Vaios have a gsm built-in modem. Allow powering on/off this device.
Thanks to Joshua Wise for the base code.

Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 9f9f0761

drivers/misc/sony-laptop.c

+41 −0
Original line number Diff line number Diff line
@@ -923,6 +923,7 @@ struct sony_pic_dev { 
	int			model;

	u8			camera_power;

	u8			bluetooth_power;

	u8			wwan_power;

	struct acpi_device	*acpi_dev;

	struct sony_pic_irq	*cur_irq;

	struct sony_pic_ioport	*cur_ioport;
@@ -1330,6 +1331,44 @@ static ssize_t sony_pic_camerapower_show(struct device *dev, 
	return count;

}



/* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */

static void sony_pic_set_wwanpower(u8 state)

{

	state = !!state;

	mutex_lock(&spic_dev.lock);

	if (spic_dev.wwan_power == state) {

		mutex_unlock(&spic_dev.lock);

		return;

	}

	sony_pic_call2(0xB0, state);

	spic_dev.wwan_power = state;

	mutex_unlock(&spic_dev.lock);

}



static ssize_t sony_pic_wwanpower_store(struct device *dev,

		struct device_attribute *attr,

		const char *buffer, size_t count)

{

	unsigned long value;

	if (count > 31)

		return -EINVAL;



	value = simple_strtoul(buffer, NULL, 10);

	sony_pic_set_wwanpower(value);



	return count;

}



static ssize_t sony_pic_wwanpower_show(struct device *dev,

		struct device_attribute *attr, char *buffer)

{

	ssize_t count;

	mutex_lock(&spic_dev.lock);

	count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);

	mutex_unlock(&spic_dev.lock);

	return count;

}



/* bluetooth subsystem power state */

static void __sony_pic_set_bluetoothpower(u8 state)

{
@@ -1412,11 +1451,13 @@ struct device_attribute spic_attr_##_name = __ATTR(_name, \ 


static SPIC_ATTR(camerapower, 0644);

static SPIC_ATTR(bluetoothpower, 0644);

static SPIC_ATTR(wwanpower, 0644);

static SPIC_ATTR(fanspeed, 0644);



static struct attribute *spic_attributes[] = {

	&spic_attr_camerapower.attr,

	&spic_attr_bluetoothpower.attr,

	&spic_attr_wwanpower.attr,

	&spic_attr_fanspeed.attr,

	NULL

};