C++ (Cpp) acpi_tb_tables_loaded示例

示例#1

文件： evxfevnt.c 项目： 3sOx/asuswrt-merlin

/*******************************************************************************
 *
 * FUNCTION:    acpi_enable
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Transfers the system into ACPI mode.
 *
 ******************************************************************************/
acpi_status acpi_enable(void)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(acpi_enable);

	/* ACPI tables must be present */

	if (!acpi_tb_tables_loaded()) {
		return_ACPI_STATUS(AE_NO_ACPI_TABLES);
	}

	/* Check current mode */

	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
				  "System is already in ACPI mode\n"));
	} else {
		/* Transition to ACPI mode */

		status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
		if (ACPI_FAILURE(status)) {
			ACPI_ERROR((AE_INFO,
				    "Could not transition to ACPI mode"));
			return_ACPI_STATUS(status);
		}

		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
				  "Transition to ACPI mode successful\n"));
	}

	return_ACPI_STATUS(status);
}

示例#2

文件： evxfevnt.c 项目： 1703011/asuswrt-merlin

acpi_status acpi_enable(void)
{
	acpi_status status;
	int retry;

	ACPI_FUNCTION_TRACE(acpi_enable);

	/* ACPI tables must be present */

	if (!acpi_tb_tables_loaded()) {
		return_ACPI_STATUS(AE_NO_ACPI_TABLES);
	}

	/* Check current mode */

	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
				  "System is already in ACPI mode\n"));
		return_ACPI_STATUS(AE_OK);
	}

	/* Transition to ACPI mode */

	status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
	if (ACPI_FAILURE(status)) {
		ACPI_ERROR((AE_INFO,
			    "Could not transition to ACPI mode"));
		return_ACPI_STATUS(status);
	}

	/* Sanity check that transition succeeded */

	for (retry = 0; retry < 30000; ++retry) {
		if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
			if (retry != 0)
				ACPI_WARNING((AE_INFO,
				"Platform took > %d00 usec to enter ACPI mode", retry));
			return_ACPI_STATUS(AE_OK);
		}
		acpi_os_stall(100);	/* 100 usec */
	}

	ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
	return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
}

示例#3

文件： evxfevnt.c 项目： karelh/liquidware_beagleboard_linux

acpi_status acpi_enable(void)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(acpi_enable);

	/* ACPI tables must be present */

	if (!acpi_tb_tables_loaded()) {
		return_ACPI_STATUS(AE_NO_ACPI_TABLES);
	}

	/* Check current mode */

	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
				  "System is already in ACPI mode\n"));
		return_ACPI_STATUS(AE_OK);
	}

	/* Transition to ACPI mode */

	status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
	if (ACPI_FAILURE(status)) {
		ACPI_ERROR((AE_INFO,
			    "Could not transition to ACPI mode"));
		return_ACPI_STATUS(status);
	}

	/* Sanity check that transition succeeded */

	if (acpi_hw_get_mode() != ACPI_SYS_MODE_ACPI) {
		ACPI_ERROR((AE_INFO,
			    "Hardware did not enter ACPI mode"));
		return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_INIT,
			  "Transition to ACPI mode successful\n"));

	return_ACPI_STATUS(AE_OK);
}