+++ /dev/null
-/*******************************************************************************
-Copyright (C) Marvell International Ltd. and its affiliates
-
-This software file (the "File") is owned and distributed by Marvell
-International Ltd. and/or its affiliates ("Marvell") under the following
-alternative licensing terms. Once you have made an election to distribute the
-File under one of the following license alternatives, please (i) delete this
-introductory statement regarding license alternatives, (ii) delete the two
-license alternatives that you have not elected to use and (iii) preserve the
-Marvell copyright notice above.
-
-********************************************************************************
-Marvell Commercial License Option
-
-If you received this File from Marvell and you have entered into a commercial
-license agreement (a "Commercial License") with Marvell, the File is licensed
-to you under the terms of the applicable Commercial License.
-
-********************************************************************************
-Marvell GPL License Option
-
-If you received this File from Marvell, you may opt to use, redistribute and/or
-modify this File in accordance with the terms and conditions of the General
-Public License Version 2, June 1991 (the "GPL License"), a copy of which is
-available along with the File in the license.txt file or by writing to the Free
-Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
-on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
-
-THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
-WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
-DISCLAIMED. The GPL License provides additional details about this warranty
-disclaimer.
-********************************************************************************
-Marvell BSD License Option
-
-If you received this File from Marvell, you may opt to use, redistribute and/or
-modify this File under the following licensing terms.
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- * Neither the name of Marvell nor the names of its contributors may be
- used to endorse or promote products derived from this software without
- specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-*******************************************************************************/
-
-#include "spi/mvSpi.h"
-#include "spi/mvSpiSpec.h"
-
-/*#define MV_DEBUG*/
-#ifdef MV_DEBUG
-#define DB(x) x
-#else
-#define DB(x)
-#endif
-
-
-/*******************************************************************************
-* mvSpiReadAndWrite - Read and Write a buffer simultanuousely
-*
-* DESCRIPTION:
-* Transmit and receive a buffer over the SPI in 16bit chunks. If the
-* buffer size is odd, then the last chunk will be 8bits.
-*
-* INPUT:
-* pRxBuff: Pointer to the buffer to write the RX info in
-* pTxBuff: Pointer to the buffer holding the TX info
-* buffSize: length of both the pTxBuff and pRxBuff
-*
-* OUTPUT:
-* pRxBuff: Pointer of the buffer holding the RX data
-*
-* RETURN:
-* Success or Error code.
-*
-*
-*******************************************************************************/
-MV_STATUS mvSpiReadAndWrite(MV_U8* pRxBuff, MV_U8* pTxBuff, MV_U32 buffSize)
-{
- MV_STATUS ret;
-
- /* check for null parameters */
- if ((pRxBuff == NULL) || (pTxBuff == NULL) || (buffSize == 0))
- {
- mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
- return MV_BAD_PARAM;
- }
-
- /* First assert the chip select */
- mvSpiCsAssert();
-
- ret = mvSpiReadWrite(pRxBuff, pTxBuff, buffSize);
-
- /* Finally deassert the chip select */
- mvSpiCsDeassert();
-
- return ret;
-}
-
-/*******************************************************************************
-* mvSpiWriteThenWrite - Serialize a command followed by the data over the TX line
-*
-* DESCRIPTION:
-* Assert the chip select line. Transmit the command buffer followed by
-* the data buffer. Then deassert the CS line.
-*
-* INPUT:
-* pCmndBuff: Pointer to the command buffer to transmit
-* cmndSize: length of the command size
-* pTxDataBuff: Pointer to the data buffer to transmit
-* txDataSize: length of the data buffer
-*
-* OUTPUT:
-* None.
-*
-* RETURN:
-* Success or Error code.
-*
-*
-*******************************************************************************/
-MV_STATUS mvSpiWriteThenWrite (MV_U8* pCmndBuff, MV_U32 cmndSize, MV_U8* pTxDataBuff,
- MV_U32 txDataSize)
-{
- MV_STATUS ret = MV_OK, tempRet;
-
- /* check for null parameters */
-#ifndef CONFIG_MARVELL
- if(NULL == pTxDataBuff)
- {
- mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
- return MV_BAD_PARAM;
- }
-#endif
-
- if (pCmndBuff == NULL)
- {
- mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
- return MV_BAD_PARAM;
- }
-
- /* First assert the chip select */
- mvSpiCsAssert();
-
- /* first write the command */
- if ((cmndSize) && (pCmndBuff != NULL))
- {
- if ((tempRet = mvSpiWrite(pCmndBuff, cmndSize)) != MV_OK)
- ret = tempRet;
- }
-
- /* Then write the data buffer */
-#ifndef CONFIG_MARVELL
- if (txDataSize)
-#else
- if ((txDataSize) && (pTxDataBuff != NULL))
-#endif
- {
- if ((tempRet = mvSpiWrite(pTxDataBuff, txDataSize)) != MV_OK)
- ret = tempRet;
- }
-
- /* Finally deassert the chip select */
- mvSpiCsDeassert();
-
- return ret;
-}
-
-/*******************************************************************************
-* mvSpiWriteThenRead - Serialize a command then read a data buffer
-*
-* DESCRIPTION:
-* Assert the chip select line. Transmit the command buffer then read
-* the data buffer. Then deassert the CS line.
-*
-* INPUT:
-* pCmndBuff: Pointer to the command buffer to transmit
-* cmndSize: length of the command size
-* pRxDataBuff: Pointer to the buffer to read the data in
-* txDataSize: length of the data buffer
-*
-* OUTPUT:
-* pRxDataBuff: Pointer to the buffer holding the data
-*
-* RETURN:
-* Success or Error code.
-*
-*
-*******************************************************************************/
-MV_STATUS mvSpiWriteThenRead (MV_U8* pCmndBuff, MV_U32 cmndSize, MV_U8* pRxDataBuff,
- MV_U32 rxDataSize,MV_U32 dummyBytesToRead)
-{
- MV_STATUS ret = MV_OK, tempRet;
- MV_U8 dummyByte;
-
- /* check for null parameters */
- if ((pCmndBuff == NULL) && (pRxDataBuff == NULL))
- {
- mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
- return MV_BAD_PARAM;
- }
-
- /* First assert the chip select */
- mvSpiCsAssert();
-
- /* first write the command */
- if ((cmndSize) && (pCmndBuff != NULL))
- {
- if ((tempRet = mvSpiWrite(pCmndBuff, cmndSize)) != MV_OK)
- ret = tempRet;
- }
-
- /* Read dummy bytes before real data. */
- while(dummyBytesToRead)
- {
- mvSpiRead(&dummyByte,1);
- dummyBytesToRead--;
- }
-
- /* Then write the data buffer */
- if ((rxDataSize) && (pRxDataBuff != NULL))
- {
- if ((tempRet = mvSpiRead(pRxDataBuff, rxDataSize)) != MV_OK)
- ret = tempRet;
- }
-
- /* Finally deassert the chip select */
- mvSpiCsDeassert();
-
- return ret;
-}
-
projects / openwrt / svn-archive / archive.git / blobdiff