ACPI: asus_acpi: LED display support
This patch adds handling for front LED displays found on W1N and the like.
Additionally, W1N is given its own model_data instance.
Patch originally by Éric Burghard.
Signed-off-by: Karol Kozimor <sziwan@hell.org.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index fdc3995..b95b52e 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -26,6 +26,7 @@
* Pontus Fuchs - Helper functions, cleanup
* Johann Wiesner - Small compile fixes
* John Belmonte - ACPI code for Toshiba laptop was a good starting point.
+ * Éric Burghard - LED display support for W1N
*
*/
@@ -44,6 +45,7 @@
#define PROC_MLED "mled"
#define PROC_WLED "wled"
#define PROC_TLED "tled"
+#define PROC_LEDD "ledd"
#define PROC_INFO "info"
#define PROC_LCD "lcd"
#define PROC_BRN "brn"
@@ -88,6 +90,7 @@
char *wled_status; //node to handle wled reading_______A
char *mt_tled; //method to handle tled_____________R
char *tled_status; //node to handle tled reading_______A
+ char *mt_ledd; //method to handle LED display______R
char *mt_lcd_switch; //method to turn LCD ON/OFF_________A
char *lcd_status; //node to read LCD panel state______A
char *brightness_up; //method to set brightness up_______A
@@ -107,6 +110,7 @@
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
struct model_data *methods; //methods available on the laptop
u8 brightness; //brightness level
enum {
@@ -127,7 +131,8 @@
P30, //Samsung P30
S1x, //S1300A, but also L1400B and M2400A (L84F)
S2x, //S200 (J1 reported), Victor MP-XP7210
- xxN, //M2400N, M3700N, M5200N, S1300N, S5200N, W1OOON
+ W1N, //W1000N
+ xxN, //M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
//(Centrino)
END_MODEL
} model; //Models currently supported
@@ -332,6 +337,18 @@
.brightness_down = S2x_PREFIX "_Q0A"},
{
+ .name = "W1N",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_ledd = "SLCM",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\ADVG"},
+
+ {
.name = "xxN",
.mt_mled = "MLED",
/* WLED present, but not controlled by ACPI */
@@ -550,6 +567,36 @@
}
/*
+ * Proc handlers for LED display
+ */
+static int
+proc_read_ledd(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "0x%08x\n", hotk->ledd_status);
+}
+
+static int
+proc_write_ledd(struct file *file, const char __user * buffer,
+ unsigned long count, void *data)
+{
+ int value;
+
+ count = parse_arg(buffer, count, &value);
+ if (count > 0) {
+ if (!write_acpi_int
+ (hotk->handle, hotk->methods->mt_ledd, value, NULL))
+ printk(KERN_WARNING
+ "Asus ACPI: LED display write failed\n");
+ else
+ hotk->ledd_status = (u32) value;
+ } else if (count < 0)
+ printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
+
+ return count;
+}
+
+/*
* Proc handlers for WLED
*/
static int
@@ -863,6 +910,11 @@
mode, device);
}
+ if (hotk->methods->mt_ledd) {
+ asus_proc_add(PROC_LEDD, &proc_write_ledd, &proc_read_ledd,
+ mode, device);
+ }
+
if (hotk->methods->mt_mled) {
asus_proc_add(PROC_MLED, &proc_write_mled, &proc_read_mled,
mode, device);
@@ -906,6 +958,8 @@
remove_proc_entry(PROC_MLED, acpi_device_dir(device));
if (hotk->methods->mt_tled)
remove_proc_entry(PROC_TLED, acpi_device_dir(device));
+ if (hotk->methods->mt_ledd)
+ remove_proc_entry(PROC_LEDD, acpi_device_dir(device));
if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status)
remove_proc_entry(PROC_LCD, acpi_device_dir(device));
if ((hotk->methods->brightness_up
@@ -1033,8 +1087,7 @@
strncmp(model->string.pointer, "M5N", 3) == 0 ||
strncmp(model->string.pointer, "M6N", 3) == 0 ||
strncmp(model->string.pointer, "S1N", 3) == 0 ||
- strncmp(model->string.pointer, "S5N", 3) == 0 ||
- strncmp(model->string.pointer, "W1N", 3) == 0)
+ strncmp(model->string.pointer, "S5N", 3) == 0)
hotk->model = xxN;
else if (strncmp(model->string.pointer, "M1", 2) == 0)
hotk->model = M1A;
@@ -1055,6 +1108,8 @@
hotk->model = S2x;
else if (strncmp(model->string.pointer, "L5", 2) == 0)
hotk->model = L5x;
+ else if (strncmp(model->string.pointer, "W1N", 3) == 0)
+ hotk->model = W1N;
if (hotk->model == END_MODEL) {
printk("unsupported, trying default values, supply the "
@@ -1078,10 +1133,9 @@
strncmp(model->string.pointer, "M5N", 3) == 0)
hotk->methods->mt_mled = NULL;
/* S5N and M5N have no MLED */
- else if (strncmp(model->string.pointer, "M2N", 3) == 0 ||
- strncmp(model->string.pointer, "W1N", 3) == 0)
+ else if (strncmp(model->string.pointer, "M2N", 3) == 0)
hotk->methods->mt_wled = "WLED";
- /* M2N and W1N have a usable WLED */
+ /* M2N has a usable WLED */
else if (asus_info) {
if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
hotk->methods->mled_status = NULL;
@@ -1175,6 +1229,9 @@
asus_hotk_found = 1;
+ /* LED display is off by default */
+ hotk->ledd_status = 0xFFF;
+
end:
if (result) {
kfree(hotk);