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This patch is to enable the LenovoCare LED support on Lenovo SL laptop. Based
on the found of the control interface by Alexandre Rostovtsev
Turn on the LenovoCare LED:
(As root privileges) echo 1 > /sys/class/leds/asus\:\:LenovoCare/brightness
Trun off the LenovoCare LED:
(As root privileges) echo 0 > /sys/class/leds/asus\:\:LenovoCare/brightness
The patch against current checkout of acpi4asus is below.
Signed-off-by: Ike Panhc <ike.pan@xxxxxxxxxxxxx>
---
drivers/platform/x86/asus-laptop.c | 21 ++++++++++++++++++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 3348cc6..f3c52b6 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -87,6 +87,7 @@
#define LCD_ON 0x80 /* LCD backlight */
#define GPS_ON 0x100 /* GPS */
#define KEY_ON 0x200 /* Keyboard backlight */
+#define LLED_ON 0x400 /* Lenovo SL: LenovoCare LED */
#define ASUS_LOG ASUS_HOTK_FILE ": "
#define ASUS_ERR KERN_ERR ASUS_LOG
@@ -123,6 +124,7 @@ 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 */
ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */
+ASUS_HANDLE(lled_set, "\\_SB_.PCI0.SBRG.EC0_.HKEY.TVLS"); /* LenovoCare */
/* LEDD */
ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
@@ -285,6 +287,7 @@ ASUS_LED(rled, "record", 1);
ASUS_LED(pled, "phone", 1);
ASUS_LED(gled, "gaming", 1);
ASUS_LED(kled, "kbd_backlight", 3);
+ASUS_LED(lled, "LenovoCare", 1);
struct key_entry {
char type;
@@ -419,6 +422,9 @@ static void write_status(acpi_handle handle, int out, int mask)
handle = (out) ? gps_on_handle : gps_off_handle;
out = 0x02;
break;
+ case LLED_ON:
+ out = (out & 0x1) * 0xFF;
+ break;
default:
out &= 0x1;
break;
@@ -452,6 +458,7 @@ ASUS_LED_HANDLER(pled, PLED_ON);
ASUS_LED_HANDLER(rled, RLED_ON);
ASUS_LED_HANDLER(tled, TLED_ON);
ASUS_LED_HANDLER(gled, GLED_ON);
+ASUS_LED_HANDLER(lled, LLED_ON);
/*
* Keyboard backlight
@@ -1146,6 +1153,7 @@ static int asus_hotk_get_info(void)
ASUS_HANDLE_INIT(rled_set);
ASUS_HANDLE_INIT(pled_set);
ASUS_HANDLE_INIT(gled_set);
+ ASUS_HANDLE_INIT(lled_set);
ASUS_HANDLE_INIT(ledd_set);
@@ -1338,6 +1346,7 @@ static void asus_led_exit(void)
ASUS_LED_UNREGISTER(rled);
ASUS_LED_UNREGISTER(gled);
ASUS_LED_UNREGISTER(kled);
+ ASUS_LED_UNREGISTER(lled);
}
static void asus_input_exit(void)
@@ -1417,19 +1426,25 @@ static int asus_led_init(struct device *dev)
if (rv)
goto out4;
+ rv = ASUS_LED_REGISTER(lled, dev);
+ if (rv)
+ goto out5;
+
if (kled_set_handle && kled_get_handle)
rv = ASUS_LED_REGISTER(kled, dev);
if (rv)
- goto out5;
+ goto out6;
led_workqueue = create_singlethread_workqueue("led_workqueue");
if (!led_workqueue)
- goto out6;
+ goto out7;
return 0;
-out6:
+out7:
rv = -ENOMEM;
ASUS_LED_UNREGISTER(kled);
+out6:
+ ASUS_LED_UNREGISTER(lled);
out5:
ASUS_LED_UNREGISTER(gled);
out4:
--
1.6.3.3
--
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