diff options
| author | malattia@linux.it <malattia@linux.it> | 2007-04-28 18:21:42 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-04-29 06:05:55 +0400 |
| commit | 9476cdfae61a3c3fa61d06c18dd002b03671ca9f (patch) | |
| tree | 1e6c02e7bb158f85ae297ffa61b6ccf67b4a94df /drivers/misc/sony-laptop.c | |
| parent | 9f9f0761712928768198278c6cbc5cafe5502d38 (diff) | |
| download | linux-9476cdfae61a3c3fa61d06c18dd002b03671ca9f.tar.xz | |
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: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc/sony-laptop.c')
| -rw-r--r-- | drivers/misc/sony-laptop.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c index 56413435c531..141284dee1a1 100644 --- a/drivers/misc/sony-laptop.c +++ b/drivers/misc/sony-laptop.c @@ -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 }; |