[PATCH 35/140] asus-laptop: add ledd support

Len Brown
2007-02-07T18:53:53Z

From: Corentin Chary <corentincj@iksaif.net>

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>
---
drivers/misc/asus-laptop.c | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 979daa6..bd963c6 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -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
};

@@ -479,6 +483,30 @@ static ssize_t store_status(const char *buf, size_t count,
}

/*
+ * 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
*/
static ssize_t show_wlan(struct device *dev,
@@ -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);
--
1.5.0.rc3.39.gec804