From: Corentin Chary <corentincj@xxxxxxxxxx>
Just adds GPS support found in R2H thanks to Sam Lin. It will
make a "gps" file in /sys/devices/platform/asus-laptop/.
Signed-off-by: Corentin Chary <corentincj@xxxxxxxxxx>
---
asus-laptop.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 54 insertions(+), 1 deletion(-)
--- a/drivers/misc/asus-laptop.c 2007-05-05 09:21:19.000000000 +0200
+++ b/drivers/misc/asus-laptop.c 2007-05-05 09:27:46.000000000 +0200
@@ -30,7 +30,7 @@
* Eric Burghard - LED display support for W1N
* Josh Green - Light Sens support
* Thomas Tuttle - His first patch for led support was very helpfull
- *
+ * Sam Lin - GPS support
*/
#include <linux/autoconf.h>
@@ -83,6 +83,7 @@
#define PLED_ON 0x20 //Phone LED
#define GLED_ON 0x40 //Gaming LED
#define LCD_ON 0x80 //LCD backlight
+#define GPS_ON 0x100 //GPS
#define ASUS_LOG ASUS_HOTK_FILE ": "
#define ASUS_ERR KERN_ERR ASUS_LOG
@@ -162,6 +163,12 @@
ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
+/* GPS */
+/* R2H use different handle for GPS on/off */
+ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */
+ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */
+ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST");
+
/*
* This is the main structure, we can use it to store anything interesting
* about the hotk device
@@ -278,12 +285,27 @@
return (hotk->status & mask) ? 1 : 0;
}
+static int read_gps_status(void) {
+ ulong status;
+ acpi_status rv = AE_OK;
+
+ rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
+ if (ACPI_FAILURE(rv))
+ printk(ASUS_WARNING "Error reading GPS status\n");
+ else
+ return status ? 1 : 0;
+
+ return (hotk->status & GPS_ON) ? 1 : 0;
+}
+
/* Generic LED functions */
static int read_status(int mask)
{
/* There is a special method for both wireless devices */
if (mask == BT_ON || mask == WL_ON)
return read_wireless_status(mask);
+ else if(mask == GPS_ON)
+ return read_gps_status();
return (hotk->status & mask) ? 1 : 0;
}
@@ -299,6 +321,10 @@
case GLED_ON:
out = (out & 0x1) + 1;
break;
+ case GPS_ON:
+ handle = (out) ? gps_on_handle : gps_off_handle;
+ out = 0x02;
+ break;
default:
out &= 0x1;
break;
@@ -667,6 +693,21 @@
return rv;
}
+/*
+ * GPS
+ */
+static ssize_t show_gps(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", read_status(GPS_ON));
+}
+
+static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return store_status(buf, count, NULL, GPS_ON);
+}
+
static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
{
/* TODO Find a better way to handle events count. */
@@ -715,6 +756,7 @@
static ASUS_CREATE_DEVICE_ATTR(ledd);
static ASUS_CREATE_DEVICE_ATTR(ls_switch);
static ASUS_CREATE_DEVICE_ATTR(ls_level);
+static ASUS_CREATE_DEVICE_ATTR(gps);
static struct attribute *asuspf_attributes[] = {
&dev_attr_infos.attr,
@@ -724,6 +766,7 @@
&dev_attr_ledd.attr,
&dev_attr_ls_switch.attr,
&dev_attr_ls_level.attr,
+ &dev_attr_gps.attr,
NULL
};
@@ -763,6 +806,9 @@
ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
}
+
+ if(gps_status_handle && gps_on_handle && gps_off_handle)
+ ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
}
static int asus_handle_init(char *name, acpi_handle * handle,
@@ -893,6 +939,10 @@
if (ASUS_HANDLE_INIT(ls_switch))
ASUS_HANDLE_INIT(ls_level);
+ ASUS_HANDLE_INIT(gps_on);
+ ASUS_HANDLE_INIT(gps_off);
+ ASUS_HANDLE_INIT(gps_status);
+
kfree(model);
return AE_OK;
@@ -981,6 +1031,9 @@
if (ls_level_handle)
set_light_sens_level(hotk->light_level);
+ /* GPS is on by default */
+ write_status(NULL, 1, GPS_ON);
+
end:
if (result) {
kfree(hotk->name);
-
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