| /***********************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 |
