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Commit e539c2f6 authored by Corentin Chary's avatar Corentin Chary Committed by Len Brown
Browse files

asus-laptop: add GPS support 



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: default avatarCorentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent a9dbcb37

drivers/misc/asus-laptop.c

+54 −1
Original line number Diff line number Diff line
@@ -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(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L 
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 @@ static int read_wireless_status(int mask) 
	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 @@ static void write_status(acpi_handle handle, int out, int mask) 
	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 @@ static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 
	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(display); 
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 @@ static struct attribute *asuspf_attributes[] = { 
	&dev_attr_ledd.attr,

	&dev_attr_ls_switch.attr,

	&dev_attr_ls_level.attr,

	&dev_attr_gps.attr,

	NULL

};
@@ -763,6 +806,9 @@ static void asus_hotk_add_fs(void) 
		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 @@ static int asus_hotk_get_info(void) 
	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 @@ static int asus_hotk_add(struct acpi_device *device) 
	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);