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Commit 6c3df88f authored by Lee, Chun-Yi's avatar Lee, Chun-Yi Committed by Matthew Garrett
Browse files

acer-wmi: Detect the WiFi/Bluetooth/3G devices available 



Check the Acer OEM-specific Type AA to detect the WiFi/Bluetooth/3G
devices available or not, and set the devices capability flag.

Signed-off-by: default avatarLee, Chun-Yi <jlee@novell.com>
Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
Reviewed-by: default avatarDmitry Torokhov <dtor@mail.ru>
Acked-by: default avatarThomas Renninger <trenn@suse.de>
Acked-by: default avatarJiri Benc <jbenc@suse.cz>
Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent b3c9092b

drivers/platform/x86/acer-wmi.c

+42 −7
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/slab.h>

#include <linux/input.h>

#include <linux/input/sparse-keymap.h>

#include <linux/dmi.h>



#include <acpi/acpi_drivers.h>
@@ -124,7 +125,9 @@ struct event_return_value { 
/*

 * GUID3 Get Device Status device flags

 */

#define ACER_WMID3_GDS_WIRELESS		(1<<0)	/* WiFi */

#define ACER_WMID3_GDS_THREEG		(1<<6)	/* 3G */

#define ACER_WMID3_GDS_BLUETOOTH	(1<<11)	/* BT */



struct wmid3_gds_input_param {	/* Get Device Status input parameter */

	u8 function_num;	/* Function Number */
@@ -139,6 +142,13 @@ struct wmid3_gds_return_value { /* Get Device Status return value*/ 
	u32 reserved;

} __attribute__((packed));



struct hotkey_function_type_aa {

	u8 type;

	u8 length;

	u16 handle;

	u16 commun_func_bitmap;

} __attribute__((packed));



/*

 * Interface capability flags

 */
@@ -169,6 +179,7 @@ static int mailled = -1; 
static int brightness = -1;

static int threeg = -1;

static int force_series;

static bool has_type_aa;



module_param(mailled, int, 0444);

module_param(brightness, int, 0444);
@@ -807,6 +818,28 @@ static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) 
	return WMI_execute_u32(method_id, (u32)value, NULL);

}



static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)

{

	struct hotkey_function_type_aa *type_aa;



	/* We are looking for OEM-specific Type AAh */

	if (header->type != 0xAA)

		return;



	has_type_aa = true;

	type_aa = (struct hotkey_function_type_aa *) header;



	printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",

		type_aa->commun_func_bitmap);



	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)

		interface->capability |= ACER_CAP_WIRELESS;

	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)

		interface->capability |= ACER_CAP_THREEG;

	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)

		interface->capability |= ACER_CAP_BLUETOOTH;

}



static acpi_status WMID_set_capabilities(void)

{

	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -827,16 +860,17 @@ static acpi_status WMID_set_capabilities(void) 
		return AE_ERROR;

	}



	/* Not sure on the meaning of the relevant bits yet to detect these */

	dmi_walk(type_aa_dmi_decode, NULL);

	if (!has_type_aa) {

		interface->capability |= ACER_CAP_WIRELESS;

		interface->capability |= ACER_CAP_THREEG;

		if (devices & 0x10)

			interface->capability |= ACER_CAP_BLUETOOTH;

	}



	/* WMID always provides brightness methods */

	interface->capability |= ACER_CAP_BRIGHTNESS;



	if (devices & 0x10)

		interface->capability |= ACER_CAP_BLUETOOTH;



	if (!(devices & 0x20))

		max_brightness = 0x9;
@@ -915,6 +949,7 @@ static void __init acer_commandline_init(void) 
	 * capability isn't available on the given interface

	 */

	set_u32(mailled, ACER_CAP_MAILLED);

	if (!has_type_aa)

		set_u32(threeg, ACER_CAP_THREEG);

	set_u32(brightness, ACER_CAP_BRIGHTNESS);

}