name : cvmx-helper-spi.h /***********************license start*************** * Author: Cavium Networks * * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * * Copyright (c) 2003-2008 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. * * This file is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this file; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * or visit http://www.gnu.org/licenses/. * * This file may also be available under a different license from Cavium. * Contact Cavium Networks for more information ***********************license end**************************************/ /* * Functions for SPI initialization, configuration, * and monitoring. */ #ifndef __CVMX_HELPER_SPI_H__ #define __CVMX_HELPER_SPI_H__ /** * Probe a SPI interface and determine the number of ports * connected to it. The SPI interface should still be down after * this call. * * @interface: Interface to probe * * Returns Number of ports on the interface. Zero to disable. */ extern int __cvmx_helper_spi_probe(int interface); extern int __cvmx_helper_spi_enumerate(int interface); /** * Bringup and enable a SPI interface. After this call packet I/O * should be fully functional. This is called with IPD enabled but * PKO disabled. * * @interface: Interface to bring up * * Returns Zero on success, negative on failure */ extern int __cvmx_helper_spi_enable(int interface); /** * Return the link state of an IPD/PKO port as returned by * auto negotiation. The result of this function may not match * Octeon's link config if auto negotiation has changed since * the last call to cvmx_helper_link_set(). * * @ipd_port: IPD/PKO port to query * * Returns Link state */ extern union cvmx_helper_link_info __cvmx_helper_spi_link_get(int ipd_port); /** * Configure an IPD/PKO port for the specified link state. This * function does not influence auto negotiation at the PHY level. * The passed link state must always match the link state returned * by cvmx_helper_link_get(). * * @ipd_port: IPD/PKO port to configure * @link_info: The new link state * * Returns Zero on success, negative on failure */ extern int __cvmx_helper_spi_link_set(int ipd_port, union cvmx_helper_link_info link_info); #endif