C++ (Cpp) acpi_power_on_resources Examples

Example #1

File: device_pm.c Project: AiWinters/linux

int acpi_bus_init_power(struct acpi_device *device)
{
	int state;
	int result;

	if (!device)
		return -EINVAL;

	device->power.state = ACPI_STATE_UNKNOWN;

	result = acpi_device_get_power(device, &state);
	if (result)
		return result;

	if (state < ACPI_STATE_D3_COLD && device->power.flags.power_resources) {
		result = acpi_power_on_resources(device, state);
		if (result)
			return result;

		result = acpi_dev_pm_explicit_set(device, state);
		if (result)
			return result;
	} else if (state == ACPI_STATE_UNKNOWN) {
		/* No power resources and missing _PSC? Try to force D0. */
		state = ACPI_STATE_D0;
		result = acpi_dev_pm_explicit_set(device, state);
		if (result)
			return result;
	}
	device->power.state = state;
	return 0;
}

Example #2

File: device_pm.c Project: magarto/linux-rpi-grsecurity

int acpi_bus_init_power(struct acpi_device *device)
{
	int state;
	int result;

	if (!device)
		return -EINVAL;

	device->power.state = ACPI_STATE_UNKNOWN;
	if (!acpi_device_is_present(device))
		return -ENXIO;

	result = acpi_device_get_power(device, &state);
	if (result)
		return result;

	if (state < ACPI_STATE_D3_COLD && device->power.flags.power_resources) {
		/* Reference count the power resources. */
		result = acpi_power_on_resources(device, state);
		if (result)
			return result;

		if (state == ACPI_STATE_D0) {
			/*
			 * If _PSC is not present and the state inferred from
			 * power resources appears to be D0, it still may be
			 * necessary to execute _PS0 at this point, because
			 * another device using the same power resources may
			 * have been put into D0 previously and that's why we
			 * see D0 here.
			 */
			result = acpi_dev_pm_explicit_set(device, state);
			if (result)
				return result;
		}
	} else if (state == ACPI_STATE_UNKNOWN) {
		/*
		 * No power resources and missing _PSC?  Cross fingers and make
		 * it D0 in hope that this is what the BIOS put the device into.
		 * [We tried to force D0 here by executing _PS0, but that broke
		 * Toshiba P870-303 in a nasty way.]
		 */
		state = ACPI_STATE_D0;
	}
	device->power.state = state;
	return 0;
}

Example #3

File: bus.c Project: BackupWildfireDEV/android_kernel_htc_msm8960-2

int acpi_bus_init_power(struct acpi_device *device)
{
	int state;
	int result;

	if (!device)
		return -EINVAL;

	device->power.state = ACPI_STATE_UNKNOWN;

	result = __acpi_bus_get_power(device, &state);
	if (result)
		return result;

	if (device->power.flags.power_resources)
		result = acpi_power_on_resources(device, state);

	if (!result)
		device->power.state = state;

	return result;
}

Example #4

File: device_pm.c Project: 0x000000FF/edison-linux

int acpi_bus_init_power(struct acpi_device *device)
{
	int state;
	int result;

	if (!device)
		return -EINVAL;

	device->power.state = ACPI_STATE_UNKNOWN;
	if (!acpi_device_is_present(device))
		return -ENXIO;

	result = acpi_device_get_power(device, &state);
	if (result)
		return result;

	if (state < ACPI_STATE_D3_COLD && device->power.flags.power_resources) {
		result = acpi_power_on_resources(device, state);
		if (result)
			return result;

		result = acpi_dev_pm_explicit_set(device, state);
		if (result)
			return result;
	} else if (state == ACPI_STATE_UNKNOWN) {
		/*
		 * No power resources and missing _PSC?  Cross fingers and make
		 * it D0 in hope that this is what the BIOS put the device into.
		 * [We tried to force D0 here by executing _PS0, but that broke
		 * Toshiba P870-303 in a nasty way.]
		 */
		state = ACPI_STATE_D0;
	}
	device->power.state = state;
	return 0;
}