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

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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: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
malattia@linux.it 2007-04-28 23:21:42 +09:00 committed by Len Brown
parent 9f9f076171
commit 9476cdfae6
1 changed files with 41 additions and 0 deletions
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41
drivers/misc/sony-laptop.c
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@ -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
};