static int __init
acpi_bus_init_irq (void)
{
acpi_status status = AE_OK;
union acpi_object arg = {ACPI_TYPE_INTEGER};
struct acpi_object_list arg_list = {1, &arg};
char *message = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_init_irq");
/*
* Let the system know what interrupt model we are using by
* evaluating the \_PIC object, if exists.
*/
switch (acpi_irq_model) {
case ACPI_IRQ_MODEL_PIC:
message = "PIC";
break;
case ACPI_IRQ_MODEL_IOAPIC:
message = "IOAPIC";
break;
case ACPI_IRQ_MODEL_IOSAPIC:
message = "IOSAPIC";
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
return_VALUE(-ENODEV);
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
arg.integer.value = acpi_irq_model;
status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PIC\n"));
return_VALUE(-ENODEV);
}
return_VALUE(0);
}
acpi_status
acpi_evaluate_string(acpi_handle handle,
acpi_string pathname,
acpi_object_list * arguments, acpi_string * data)
{
acpi_status status = AE_OK;
acpi_object *element = NULL;
acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!data)
return AE_BAD_PARAMETER;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
return status;
}
element = (acpi_object *) buffer.pointer;
if ((element->type != ACPI_TYPE_STRING)
|| (element->type != ACPI_TYPE_BUFFER)
|| !element->string.length) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
return AE_BAD_DATA;
}
*data = kzalloc(element->string.length + 1, GFP_KERNEL);
if (!data) {
printk(KERN_ERR PREFIX "Memory allocation\n");
return -ENOMEM;
}
memcpy(*data, element->string.pointer, element->string.length);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%s]\n", *data));
kfree(buffer.pointer);
return AE_OK;
}
/**
* ide_acpi_push_timing - set the channel (controller) timings
* @hwif: target IDE interface (channel)
*
* This function executes the _STM ACPI method for the target channel.
*
* _STM requires Identify Drive data, which has to passed as an argument.
* Unfortunately hd_driveid is a mangled version which we can't readily
* use; hence we'll get the information afresh.
*/
void ide_acpi_push_timing(ide_hwif_t *hwif)
{
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[3];
struct ide_acpi_drive_link *master = &hwif->acpidata->master;
struct ide_acpi_drive_link *slave = &hwif->acpidata->slave;
if (ide_noacpi)
return;
DEBPRINT("ENTER:\n");
if (!hwif->acpidata) {
DEBPRINT("no ACPI data for %s\n", hwif->name);
return;
}
/* Give the GTM buffer + drive Identify data to the channel via the
* _STM method: */
/* setup input parameters buffer for _STM */
input.count = 3;
input.pointer = in_params;
in_params[0].type = ACPI_TYPE_BUFFER;
in_params[0].buffer.length = sizeof(struct GTM_buffer);
in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
in_params[1].type = ACPI_TYPE_BUFFER;
in_params[1].buffer.length = sizeof(struct hd_driveid);
in_params[1].buffer.pointer = (u8 *)&master->idbuff;
in_params[2].type = ACPI_TYPE_BUFFER;
in_params[2].buffer.length = sizeof(struct hd_driveid);
in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
/* Output buffer: _STM has no output */
status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_STM",
&input, NULL);
if (ACPI_FAILURE(status)) {
DEBPRINT("Run _STM error: status = 0x%x\n", status);
}
DEBPRINT("_STM status: %d\n", status);
}
static void keyboard_led_set_brightness(struct led_classdev *cdev,
enum led_brightness brightness)
{
union acpi_object param;
struct acpi_object_list input;
acpi_status status;
if (!(cdev->flags & LED_SUSPENDED))
cdev->brightness = brightness;
param.type = ACPI_TYPE_INTEGER;
param.integer.value = brightness;
input.count = 1;
input.pointer = ¶m;
status = acpi_evaluate_object(NULL, ACPI_KEYBOARD_BACKLIGHT_WRITE,
&input, NULL);
if (ACPI_FAILURE(status))
dev_err(cdev->dev, "Error setting keyboard LED value");
}
static ssize_t acpi_video_write_brightness(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
acpi_status status;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
if (!video_device) {
printk("acpi_video device is not specified!\n");
return count;
}
arg0.integer.value = simple_strtoul(buf, NULL, 10);
status = acpi_evaluate_object(video_device, "_BCM", &args, NULL);
if (!ACPI_SUCCESS(status))
printk("Failed to set brightness level!\n");
return count;
}
static int
acpi_thermal_set_cooling_mode (
struct acpi_thermal *tz,
int mode)
{
acpi_status status = AE_OK;
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
struct acpi_object_list arg_list = {1, &arg0};
acpi_handle handle = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_set_cooling_mode");
if (!tz)
return_VALUE(-EINVAL);
status = acpi_get_handle(tz->handle, "_SCP", &handle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
status = acpi_get_handle(tz->handle, "_PSV", &handle);
if(!ACPI_FAILURE(status)) {
tz->cooling_mode = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Cooling mode [%s]\n",
mode?"passive":"active"));
return_VALUE(0);
}
return_VALUE(-ENODEV);
}
arg0.integer.value = mode;
status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
tz->cooling_mode = mode;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Cooling mode [%s]\n",
mode?"passive":"active"));
return_VALUE(0);
}
/*
* The normal ACPI LID wakeup behavior is wake-on-open, but not
* wake-on-close. This is implemented as standard by the XO-1.5 DSDT.
*
* We provide here a sysfs attribute that will additionally enable
* wake-on-close behavior. This is useful (e.g.) when we oportunistically
* suspend with the display running; if the lid is then closed, we want to
* wake up to turn the display off.
*
* This is controlled through a custom method in the XO-1.5 DSDT.
*/
static int set_lid_wake_behavior(bool wake_on_close)
{
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status;
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = wake_on_close;
status = acpi_evaluate_object(NULL, "\\_SB.PCI0.LID.LIDW", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
pr_warning(PFX "failed to set lid behavior\n");
return 1;
}
lid_wake_on_close = wake_on_close;
return 0;
}
/*
* This function evaluates an ACPI method, given an int as parameter, the
* method is searched within the scope of the handle, can be NULL. The output
* of the method is written is output, which can also be NULL
*
* returns 0 if write is successful, -1 else.
*/
static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
struct acpi_buffer *output)
{
struct acpi_object_list params; /* list of input parameters (an int) */
union acpi_object in_obj; /* the only param we use */
acpi_status status;
if (!handle)
return -1;
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
in_obj.integer.value = val;
status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
if (status == AE_OK)
return 0;
else
return -1;
}
acpi_status
tz_set_cooling_preference (
TZ_CONTEXT *tz,
TZ_COOLING_MODE cooling_mode)
{
acpi_status status = AE_OK;
acpi_object_list arg_list;
acpi_object arg0;
FUNCTION_TRACE("tz_set_cooling_preference");
if (!tz || ((cooling_mode != TZ_COOLING_MODE_ACTIVE) && (cooling_mode != TZ_COOLING_MODE_PASSIVE))) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Build the argument list, which simply consists of the current
* cooling preference.
*/
memset(&arg_list, 0, sizeof(acpi_object));
arg_list.count = 1;
arg_list.pointer = &arg0;
memset(&arg0, 0, sizeof(acpi_object));
arg0.type = ACPI_TYPE_INTEGER;
arg0.integer.value = cooling_mode;
/*
* Evaluate "_SCP" - setting the new cooling preference.
*/
status = acpi_evaluate_object(tz->acpi_handle, "_SCP", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
tz->policy.cooling_mode = -1;
return_ACPI_STATUS(status);
}
tz->policy.cooling_mode = cooling_mode;
return_ACPI_STATUS(status);
}
static acpi_status
acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package, *fields;
int i;
memset(hpp, 0, sizeof(struct hotplug_params));
status = acpi_evaluate_object(handle, "_HPP", NULL, &buffer);
if (ACPI_FAILURE(status))
return status;
package = (union acpi_object *) buffer.pointer;
if (package->type != ACPI_TYPE_PACKAGE ||
package->package.count != 4) {
status = AE_ERROR;
goto exit;
}
fields = package->package.elements;
for (i = 0; i < 4; i++) {
if (fields[i].type != ACPI_TYPE_INTEGER) {
status = AE_ERROR;
goto exit;
}
}
hpp->t0 = &hpp->type0_data;
hpp->t0->revision = 1;
hpp->t0->cache_line_size = fields[0].integer.value;
hpp->t0->latency_timer = fields[1].integer.value;
hpp->t0->enable_serr = fields[2].integer.value;
hpp->t0->enable_perr = fields[3].integer.value;
exit:
kfree(buffer.pointer);
return status;
}
acpi_status
acpi_evaluate_integer(acpi_handle handle,
acpi_string pathname,
struct acpi_object_list *arguments, unsigned long *data)
{
acpi_status status = AE_OK;
union acpi_object *element;
struct acpi_buffer buffer = { 0, NULL };
if (!data)
return AE_BAD_PARAMETER;
element = kmalloc(sizeof(union acpi_object), irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
if (!element)
return AE_NO_MEMORY;
memset(element, 0, sizeof(union acpi_object));
buffer.length = sizeof(union acpi_object);
buffer.pointer = element;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
kfree(element);
return status;
}
if (element->type != ACPI_TYPE_INTEGER) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
kfree(element);
return AE_BAD_DATA;
}
*data = element->integer.value;
kfree(element);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data));
return AE_OK;
}
static int asus_acpi_get_sensor_info(struct acpi_device *adev,
struct i2c_client *client,
struct i2c_board_info *info)
{
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
int i;
acpi_status status;
union acpi_object *cpm;
int ret;
status = acpi_evaluate_object(adev->handle, "CNF0", NULL, &buffer);
if (ACPI_FAILURE(status))
return -ENODEV;
cpm = buffer.pointer;
for (i = 0; i < cpm->package.count; ++i) {
union acpi_object *elem;
int j;
elem = &cpm->package.elements[i];
for (j = 0; j < elem->package.count; ++j) {
union acpi_object *sub_elem;
sub_elem = &elem->package.elements[j];
if (sub_elem->type == ACPI_TYPE_STRING)
strlcpy(info->type, sub_elem->string.pointer,
sizeof(info->type));
else if (sub_elem->type == ACPI_TYPE_INTEGER) {
if (sub_elem->integer.value != client->addr) {
info->addr = sub_elem->integer.value;
break; /* Not a MPU6500 primary */
}
}
}
}
ret = cpm->package.count;
kfree(buffer.pointer);
return ret;
}
static int extlog_get_dsm(acpi_handle handle, int rev, int func, u64 *ret)
{
struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
struct acpi_object_list input;
union acpi_object params[4], *obj;
u8 uuid[16];
int i;
acpi_str_to_uuid(extlog_dsm_uuid, uuid);
input.count = 4;
input.pointer = params;
params[0].type = ACPI_TYPE_BUFFER;
params[0].buffer.length = 16;
params[0].buffer.pointer = uuid;
params[1].type = ACPI_TYPE_INTEGER;
params[1].integer.value = rev;
params[2].type = ACPI_TYPE_INTEGER;
params[2].integer.value = func;
params[3].type = ACPI_TYPE_PACKAGE;
params[3].package.count = 0;
params[3].package.elements = NULL;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DSM", &input, &buf)))
return -1;
*ret = 0;
obj = (union acpi_object *)buf.pointer;
if (obj->type == ACPI_TYPE_INTEGER) {
*ret = obj->integer.value;
} else if (obj->type == ACPI_TYPE_BUFFER) {
if (obj->buffer.length <= 8) {
for (i = 0; i < obj->buffer.length; i++)
*ret |= (obj->buffer.pointer[i] << (i * 8));
}
}
kfree(buf.pointer);
return 0;
}
/*
* Query firmware how many CPUs should be idle
* return -1 on failure
*/
static int acpi_pad_pur(acpi_handle handle)
{
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *package;
int num = -1;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PUR", NULL, &buffer)))
return num;
if (!buffer.length || !buffer.pointer)
return num;
package = buffer.pointer;
if (package->type == ACPI_TYPE_PACKAGE &&
package->package.count == 2 &&
package->package.elements[0].integer.value == 1) /* rev 1 */
num = package->package.elements[1].integer.value;
kfree(buffer.pointer);
return num;
}
static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
u16 *hcnt, u16 *lcnt, u32 *sda_hold)
{
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
acpi_handle handle = ACPI_HANDLE(&pdev->dev);
union acpi_object *obj;
if (ACPI_FAILURE(acpi_evaluate_object(handle, method, NULL, &buf)))
return;
obj = (union acpi_object *)buf.pointer;
if (obj->type == ACPI_TYPE_PACKAGE && obj->package.count == 3) {
const union acpi_object *objs = obj->package.elements;
*hcnt = (u16)objs[0].integer.value;
*lcnt = (u16)objs[1].integer.value;
if (sda_hold)
*sda_hold = (u32)objs[2].integer.value;
}
kfree(buf.pointer);
}
static bool processor_physically_present(acpi_handle handle)
{
int cpuid, type;
u32 acpi_id;
acpi_status status;
acpi_object_type acpi_type;
unsigned long long tmp;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
status = acpi_get_type(handle, &acpi_type);
if (ACPI_FAILURE(status))
return false;
switch (acpi_type) {
case ACPI_TYPE_PROCESSOR:
status = acpi_evaluate_object(handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status))
return false;
acpi_id = object.processor.proc_id;
break;
case ACPI_TYPE_DEVICE:
status = acpi_evaluate_integer(handle, "_UID", NULL, &tmp);
if (ACPI_FAILURE(status))
return false;
acpi_id = tmp;
break;
default:
return false;
}
type = (acpi_type == ACPI_TYPE_DEVICE) ? 1 : 0;
cpuid = acpi_get_cpuid(handle, type, acpi_id);
if (cpuid == -1)
return false;
return true;
}
static int __cpuinit
acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
{
acpi_status status = AE_OK;
if (boot_option_idle_override == IDLE_NOMWAIT) {
union acpi_object *obj;
u32 *buffer = NULL;
obj = pdc_in->pointer;
buffer = (u32 *)(obj->buffer.pointer);
buffer[2] &= ~(ACPI_PDC_C_C2C3_FFH | ACPI_PDC_C_C1_FFH);
}
status = acpi_evaluate_object(handle, "_PDC", pdc_in, NULL);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Could not evaluate _PDC, using legacy perf. control.\n"));
return status;
}
static void do_acpi_call(const char * method)
{
acpi_status status;
acpi_handle handle;
union acpi_object atpx_arg_elements[1];
struct acpi_object_list atpx_arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
printk(KERN_INFO "acpi_call: Calling %s\n", method);
status = acpi_get_handle(root_handle, (acpi_string) method, &handle);
last_result = 0;
if (ACPI_FAILURE(status))
{
printk(KERN_ERR "acpi_call: Cannot get handle: %s\n", acpi_format_exception(status));
return;
}
// for now, parameterless functions only
atpx_arg.count = 0;
atpx_arg.pointer = &atpx_arg_elements[0];
// just to be sure
atpx_arg_elements[0].type = ACPI_TYPE_INTEGER;
atpx_arg_elements[0].integer.value = 0;
status = acpi_evaluate_object(handle, NULL, &atpx_arg, &buffer);
if (ACPI_FAILURE(status))
{
printk(KERN_ERR "acpi_call: ATPX method call failed: %s\n", acpi_format_exception(status));
return;
}
kfree(buffer.pointer);
last_result = 1;
printk(KERN_INFO "acpi_call: Call successful\n");
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_execute_sleep_method
*
* PARAMETERS: method_pathname - Pathname of method to execute
* integer_argument - Argument to pass to the method
*
* RETURN: None
*
* DESCRIPTION: Execute a sleep/wake related method with one integer argument
* and no return value.
*
******************************************************************************/
void acpi_hw_execute_sleep_method(char *method_pathname, u32 integer_argument)
{
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status;
ACPI_FUNCTION_TRACE(hw_execute_sleep_method);
/* One argument, integer_argument; No return value expected */
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = (u64)integer_argument;
status = acpi_evaluate_object(NULL, method_pathname, &arg_list, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
ACPI_EXCEPTION((AE_INFO, status, "While executing method %s",
method_pathname));
}
return_VOID;
}
/* acpi_run_oshp - get control of hotplug from the firmware
*
* @handle - the handle of the hotplug controller.
*/
acpi_status acpi_run_oshp(acpi_handle handle)
{
acpi_status status;
struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL };
acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
/* run OSHP */
status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
if (ACPI_FAILURE(status))
if (status != AE_NOT_FOUND)
printk(KERN_ERR "%s:%s OSHP fails=0x%x\n",
__func__, (char *)string.pointer, status);
else
dbg("%s:%s OSHP not found\n",
__func__, (char *)string.pointer);
else
pr_debug("%s:%s OSHP passes\n", __func__,
(char *)string.pointer);
kfree(string.pointer);
return status;
}
static int __acpi_power_on(struct acpi_power_resource *resource)
{
struct acpi_power_resource_device *device_list = resource->devices;
acpi_status status = AE_OK;
status = acpi_evaluate_object(resource->device->handle, "_ON", NULL, NULL);
if (ACPI_FAILURE(status))
return -ENODEV;
/* Update the power resource's _device_ power state */
resource->device->power.state = ACPI_STATE_D0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Power resource [%s] turned on\n",
resource->name));
while (device_list) {
acpi_power_on_device(device_list->device);
device_list = device_list->next;
}
return 0;
}
static int fjes_acpi_add(struct acpi_device *device)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1];
struct platform_device *plat_dev;
union acpi_object *str;
acpi_status status;
int result;
status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer);
if (ACPI_FAILURE(status))
return -ENODEV;
str = buffer.pointer;
result = utf16s_to_utf8s((wchar_t *)str->string.pointer,
str->string.length, UTF16_LITTLE_ENDIAN,
str_buf, sizeof(str_buf) - 1);
str_buf[result] = 0;
if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) {
kfree(buffer.pointer);
return -ENODEV;
}
kfree(buffer.pointer);
status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
fjes_get_acpi_resource, fjes_resource);
if (ACPI_FAILURE(status))
return -ENODEV;
/* create platform_device */
plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource,
ARRAY_SIZE(fjes_resource));
device->driver_data = plat_dev;
return 0;
}
static void set_dflt_pwr_limit(struct iwl_trans *trans, struct pci_dev *pdev)
{
acpi_handle pxsx_handle;
acpi_handle handle;
struct acpi_buffer splx = {ACPI_ALLOCATE_BUFFER, NULL};
acpi_status status;
#if 0 /* Not in RHEL */
pxsx_handle = ACPI_HANDLE(&pdev->dev);
#else
pxsx_handle = DEVICE_ACPI_HANDLE(&pdev->dev);
#endif
if (!pxsx_handle) {
IWL_DEBUG_INFO(trans,
"Could not retrieve root port ACPI handle\n");
return;
}
/* Get the method's handle */
status = acpi_get_handle(pxsx_handle, (acpi_string)SPL_METHOD, &handle);
if (ACPI_FAILURE(status)) {
IWL_DEBUG_INFO(trans, "SPL method not found\n");
return;
}
/* Call SPLC with no arguments */
status = acpi_evaluate_object(handle, NULL, NULL, &splx);
if (ACPI_FAILURE(status)) {
IWL_ERR(trans, "SPLC invocation failed (0x%x)\n", status);
return;
}
trans->dflt_pwr_limit = splx_get_pwr_limit(trans, splx.pointer);
IWL_DEBUG_INFO(trans, "Default power limit set to %lld\n",
trans->dflt_pwr_limit);
kfree(splx.pointer);
}
static int asus_lcd_set(struct asus_laptop *asus, int value)
{
int lcd = 0;
acpi_status status = 0;
lcd = !!value;
if (lcd == asus_lcd_status(asus))
return 0;
if (!lcd_switch_handle)
return -ENODEV;
status = acpi_evaluate_object(lcd_switch_handle,
NULL, NULL, NULL);
if (ACPI_FAILURE(status)) {
pr_warning("Error switching LCD\n");
return -ENODEV;
}
asus->lcd_state = lcd;
return 0;
}
/**
* radeon_atpx_call - call an ATPX method
*
* @handle: acpi handle
* @function: the ATPX function to execute
* @params: ATPX function params
*
* Executes the requested ATPX function (all asics).
* Returns a pointer to the acpi output buffer.
*/
static union acpi_object *radeon_atpx_call(acpi_handle handle, int function,
struct acpi_buffer *params)
{
acpi_status status;
union acpi_object atpx_arg_elements[2];
struct acpi_object_list atpx_arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
atpx_arg.count = 2;
atpx_arg.pointer = &atpx_arg_elements[0];
atpx_arg_elements[0].type = ACPI_TYPE_INTEGER;
atpx_arg_elements[0].integer.value = function;
if (params) {
atpx_arg_elements[1].type = ACPI_TYPE_BUFFER;
atpx_arg_elements[1].buffer.length = params->length;
atpx_arg_elements[1].buffer.pointer = params->pointer;
} else {
/* We need a second fake parameter */
atpx_arg_elements[1].type = ACPI_TYPE_INTEGER;
atpx_arg_elements[1].integer.value = 0;
}
status = acpi_evaluate_object(handle, NULL, &atpx_arg, &buffer);
/* Fail only if calling the method fails and ATPX is supported */
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
printk("failed to evaluate ATPX got %s\n",
acpi_format_exception(status));
kfree(buffer.pointer);
return NULL;
}
return buffer.pointer;
}
static ssize_t acpi_method_0_0_write(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
acpi_handle device;
acpi_status status;
char path[255];
acpi_device_path(buf, path);
status = acpi_get_handle(NULL, path, &device);
if (!ACPI_SUCCESS(status)) {
printk("Failed to find acpi method: %s\n", path);
goto err;
}
status = acpi_evaluate_object(NULL, path, NULL, NULL);
if (ACPI_SUCCESS(status))
printk("Executed %s\n", path);
else
printk("Failed to execute %s\n", path);
err:
return count;
}
static int intel_vbtn_probe(struct platform_device *device)
{
acpi_handle handle = ACPI_HANDLE(&device->dev);
struct intel_vbtn_priv *priv;
acpi_status status;
int err;
status = acpi_evaluate_object(handle, "VBDL", NULL, NULL);
if (ACPI_FAILURE(status)) {
dev_warn(&device->dev, "failed to read Intel Virtual Button driver\n");
return -ENODEV;
}
priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(&device->dev, priv);
err = intel_vbtn_input_setup(device);
if (err) {
pr_err("Failed to setup Intel Virtual Button\n");
return err;
}
detect_tablet_mode(device);
status = acpi_install_notify_handler(handle,
ACPI_DEVICE_NOTIFY,
notify_handler,
device);
if (ACPI_FAILURE(status))
return -EBUSY;
device_init_wakeup(&device->dev, true);
return 0;
}
int acpi_bus_set_power(acpi_handle handle, int state)
{
int result = 0;
acpi_status status = AE_OK;
struct acpi_device *device = NULL;
char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
result = acpi_bus_get_device(handle, &device);
if (result)
return result;
if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
return -EINVAL;
/* Make sure this is a valid target state */
if (!device->flags.power_manageable) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
kobject_name(&device->dev.kobj)));
return -ENODEV;
}
/*
* Get device's current power state
*/
if (!acpi_power_nocheck) {
/*
* Maybe the incorrect power state is returned on the bogus
* bios, which is different with the real power state.
* For example: the bios returns D0 state and the real power
* state is D3. OS expects to set the device to D0 state. In
* such case if OS uses the power state returned by the BIOS,
* the device can't be transisted to the correct power state.
* So if the acpi_power_nocheck is set, it is unnecessary to
* get the power state by calling acpi_bus_get_power.
*/
acpi_bus_get_power(device->handle, &device->power.state);
}
if ((state == device->power.state) && !device->flags.force_power_state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
return 0;
}
if (!device->power.states[state].flags.valid) {
printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
printk(KERN_WARNING PREFIX
"Cannot set device to a higher-powered"
" state than parent\n");
return -ENODEV;
}
/*
* Transition Power
* ----------------
* On transitions to a high-powered state we first apply power (via
* power resources) then evalute _PSx. Conversly for transitions to
* a lower-powered state.
*/
if (state < device->power.state) {
if (device->power.flags.power_resources) {
result = acpi_power_transition(device, state);
if (result)
goto end;
}
if (device->power.states[state].flags.explicit_set) {
status = acpi_evaluate_object(device->handle,
object_name, NULL, NULL);
if (ACPI_FAILURE(status)) {
result = -ENODEV;
goto end;
}
}
} else {
if (device->power.states[state].flags.explicit_set) {
status = acpi_evaluate_object(device->handle,
object_name, NULL, NULL);
if (ACPI_FAILURE(status)) {
result = -ENODEV;
goto end;
}
}
if (device->power.flags.power_resources) {
result = acpi_power_transition(device, state);
if (result)
goto end;
}
}
end:
if (result)
printk(KERN_WARNING PREFIX
"Transitioning device [%s] to D%d\n",
device->pnp.bus_id, state);
else {
device->power.state = state;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
}
return result;
}
acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
{
acpi_status status;
struct acpi_object_list arg_list;
union acpi_object arg;
u32 sst_value;
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep);
status = acpi_get_sleep_type_data(sleep_state,
&acpi_gbl_sleep_type_a,
&acpi_gbl_sleep_type_b);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Execute the _PTS method (Prepare To Sleep) */
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = sleep_state;
status =
acpi_evaluate_object(NULL, METHOD_PATHNAME__PTS, &arg_list, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
return_ACPI_STATUS(status);
}
/* Setup the argument to the _SST method (System STatus) */
switch (sleep_state) {
case ACPI_STATE_S0:
sst_value = ACPI_SST_WORKING;
break;
case ACPI_STATE_S1:
case ACPI_STATE_S2:
case ACPI_STATE_S3:
sst_value = ACPI_SST_SLEEPING;
break;
case ACPI_STATE_S4:
sst_value = ACPI_SST_SLEEP_CONTEXT;
break;
default:
sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */
break;
}
/*
* Set the system indicators to show the desired sleep state.
* _SST is an optional method (return no error if not found)
*/
acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, sst_value);
return_ACPI_STATUS(AE_OK);
}
static int acpi_processor_get_info(struct acpi_device *device)
{
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
struct acpi_processor *pr = acpi_driver_data(device);
int cpu_index, device_declaration = 0;
acpi_status status = AE_OK;
static int cpu0_initialized;
unsigned long long value;
acpi_processor_errata();
/*
* Check to see if we have bus mastering arbitration control. This
* is required for proper C3 usage (to maintain cache coherency).
*/
if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
pr->flags.bm_control = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Bus mastering arbitration control present\n"));
} else
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No bus mastering arbitration control\n"));
if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
/* Declared with "Processor" statement; match ProcessorID */
status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status)) {
dev_err(&device->dev,
"Failed to evaluate processor object (0x%x)\n",
status);
return -ENODEV;
}
pr->acpi_id = object.processor.proc_id;
} else {
/*
* Declared with "Device" statement; match _UID.
* Note that we don't handle string _UIDs yet.
*/
status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
NULL, &value);
if (ACPI_FAILURE(status)) {
dev_err(&device->dev,
"Failed to evaluate processor _UID (0x%x)\n",
status);
return -ENODEV;
}
device_declaration = 1;
pr->acpi_id = value;
}
pr->apic_id = acpi_get_apicid(pr->handle, device_declaration,
pr->acpi_id);
cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == -1) &&
(num_online_cpus() == 1)) {
cpu_index = 0;
}
cpu0_initialized = 1;
pr->id = cpu_index;
/*
* Extra Processor objects may be enumerated on MP systems with
* less than the max # of CPUs. They should be ignored _iff
* they are physically not present.
*/
if (pr->id == -1) {
int ret = acpi_processor_hotadd_init(pr);
if (ret)
return ret;
}
/*
* On some boxes several processors use the same processor bus id.
* But they are located in different scope. For example:
* \_SB.SCK0.CPU0
* \_SB.SCK1.CPU0
* Rename the processor device bus id. And the new bus id will be
* generated as the following format:
* CPU+CPU ID.
*/
sprintf(acpi_device_bid(device), "CPU%X", pr->id);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
pr->acpi_id));
if (!object.processor.pblk_address)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
else if (object.processor.pblk_length != 6)
dev_err(&device->dev, "Invalid PBLK length [%d]\n",
object.processor.pblk_length);
else {
pr->throttling.address = object.processor.pblk_address;
pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
pr->pblk = object.processor.pblk_address;
/*
* We don't care about error returns - we just try to mark
* these reserved so that nobody else is confused into thinking
* that this region might be unused..
*
* (In particular, allocating the IO range for Cardbus)
*/
request_region(pr->throttling.address, 6, "ACPI CPU throttle");
}
/*
* If ACPI describes a slot number for this CPU, we can use it to
* ensure we get the right value in the "physical id" field
* of /proc/cpuinfo
*/
status = acpi_evaluate_integer(pr->handle, "_SUN", NULL, &value);
if (ACPI_SUCCESS(status))
arch_fix_phys_package_id(pr->id, value);
return 0;
}
