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acer-wmi: support to set communication device state by new wmid method

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Have many Acer notebooks' BIOS already support new WMID_GUID3 method.
On those machines, that will be better set communication device by
evaluate WMID_GUID3 method.

Tested on Acer Travelmate 8572

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Lee, Chun-Yi 2011-05-22 07:33:54 +08:00 committed by Matthew Garrett
parent ab6a931620
commit 6d88ff0f8e
1 changed files with 110 additions and 1 deletions
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111
drivers/platform/x86/acer-wmi.c
View file

@ -135,6 +135,7 @@ struct event_return_value {
*/
#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
struct lm_input_params {
@ -1142,6 +1143,114 @@ static acpi_status get_device_status(u32 *value, u32 cap)
}
}
static acpi_status wmid3_set_device_status(u32 value, u16 device)
{
struct wmid3_gds_return_value return_value;
acpi_status status;
union acpi_object *obj;
u16 devices;
struct wmid3_gds_input_param params = {
.function_num = 0x1,
.hotkey_number = 0x01,
.devices = ACER_WMID3_GDS_WIRELESS &
ACER_WMID3_GDS_THREEG &
ACER_WMID3_GDS_WIMAX &
ACER_WMID3_GDS_BLUETOOTH,
};
struct acpi_buffer input = {
sizeof(struct wmid3_gds_input_param),
&params
};
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
if (ACPI_FAILURE(status))
return status;
obj = output.pointer;
if (!obj)
return AE_ERROR;
else if (obj->type != ACPI_TYPE_BUFFER) {
kfree(obj);
return AE_ERROR;
}
if (obj->buffer.length != 8) {
pr_warning("Unknown buffer length %d\n", obj->buffer.length);
kfree(obj);
return AE_ERROR;
}
return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
kfree(obj);
if (return_value.error_code || return_value.ec_return_value) {
pr_warning("Get Current Device Status failed: "
"0x%x - 0x%x\n", return_value.error_code,
return_value.ec_return_value);
return status;
}
devices = return_value.devices;
params.function_num = 0x2;
params.hotkey_number = 0x01;
params.devices = (value) ? (devices | device) : (devices & ~device);
status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
if (ACPI_FAILURE(status))
return status;
obj = output2.pointer;
if (!obj)
return AE_ERROR;
else if (obj->type != ACPI_TYPE_BUFFER) {
kfree(obj);
return AE_ERROR;
}
if (obj->buffer.length != 4) {
pr_warning("Unknown buffer length %d\n", obj->buffer.length);
kfree(obj);
return AE_ERROR;
}
return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
kfree(obj);
if (return_value.error_code || return_value.ec_return_value)
pr_warning("Set Device Status failed: "
"0x%x - 0x%x\n", return_value.error_code,
return_value.ec_return_value);
return status;
}
static acpi_status set_device_status(u32 value, u32 cap)
{
if (wmi_has_guid(WMID_GUID3)) {
u16 device;
switch (cap) {
case ACER_CAP_WIRELESS:
device = ACER_WMID3_GDS_WIRELESS;
break;
case ACER_CAP_BLUETOOTH:
device = ACER_WMID3_GDS_BLUETOOTH;
break;
case ACER_CAP_THREEG:
device = ACER_WMID3_GDS_THREEG;
break;
default:
return AE_ERROR;
}
return wmid3_set_device_status(value, device);
} else {
return set_u32(value, cap);
}
}
/*
* Rfkill devices
*/
@ -1178,7 +1287,7 @@ static int acer_rfkill_set(void *data, bool blocked)
u32 cap = (unsigned long)data;
if (rfkill_inited) {
status = set_u32(!blocked, cap);
status = set_device_status(!blocked, cap);
if (ACPI_FAILURE(status))
return -ENODEV;
}