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asus-laptop: add ledd support 

Ledd is a special led ... /sys/.../asus-laptop/ledd works like
/proc/acpi/asus/ledd

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Corentin Chary 2007-01-26 14:04:55 +01:00 committed by Len Brown
parent 78127b4a90
commit 722ad97153
1 changed files with 38 additions and 0 deletions
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38
drivers/misc/asus-laptop.c
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@ -104,6 +104,9 @@ ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
/* LEDD */
ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
/* Bluetooth and WLAN
* WLED and BLED are not handled like other XLED, because in some dsdt
* they also control the WLAN/Bluetooth device.
@ -151,6 +154,7 @@ struct asus_hotk {
struct acpi_device *device; //the device we are in
acpi_handle handle; //the handle of the hotk device
char status; //status of the hotk, for LEDs, ...
u32 ledd_status; //status of the LED display
u16 event_count[128]; //count for each event TODO make this better
};
@ -478,6 +482,30 @@ static ssize_t store_status(const char *buf, size_t count,
return rv;
}
/*
* LEDD display
*/
static ssize_t show_ledd(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "0x%08x\n", hotk->ledd_status);
}
static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0) {
if (!write_acpi_int(ledd_set_handle, NULL, value, NULL))
printk(ASUS_WARNING "LED display write failed\n");
else
hotk->ledd_status = (u32) value;
}
return rv;
}
/*
* WLAN
*/
@ -607,12 +635,14 @@ static ASUS_CREATE_DEVICE_ATTR(infos);
static ASUS_CREATE_DEVICE_ATTR(wlan);
static ASUS_CREATE_DEVICE_ATTR(bluetooth);
static ASUS_CREATE_DEVICE_ATTR(display);
static ASUS_CREATE_DEVICE_ATTR(ledd);
static struct attribute *asuspf_attributes[] = {
&dev_attr_infos.attr,
&dev_attr_wlan.attr,
&dev_attr_bluetooth.attr,
&dev_attr_display.attr,
&dev_attr_ledd.attr,
NULL
};
@ -646,6 +676,9 @@ static void asus_hotk_add_fs(void)
else if(display_set_handle)
ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
if (ledd_set_handle)
ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
}
static int asus_handle_init(char *name, acpi_handle *handle,
@ -741,6 +774,8 @@ static int asus_hotk_get_info(void)
ASUS_HANDLE_INIT(rled_set);
ASUS_HANDLE_INIT(pled_set);
ASUS_HANDLE_INIT(ledd_set);
/*
* The HWRS method return informations about the hardware.
* 0x80 bit is for WLAN, 0x100 for Bluetooth.
@ -836,6 +871,9 @@ static int asus_hotk_add(struct acpi_device *device)
/* LCD Backlight is on by default */
write_status(NULL, 1, LCD_ON, 0);
/* LED display is off by default */
hotk->ledd_status = 0xFFF;
end:
if (result) {
kfree(hotk->name);