37d3bfd992
Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Patchwork: https://patchwork.linux-mips.org/patch/2941/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/***********************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 cvmx_helper_link_info_t __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(). It is normally best to use
|
|
* cvmx_helper_link_autoconf() instead.
|
|
*
|
|
* @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,
|
|
cvmx_helper_link_info_t link_info);
|
|
|
|
#endif
|