From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- .../ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c | 249 +++++++++++++++++++++ 1 file changed, 249 insertions(+) create mode 100644 target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c (limited to 'target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c') diff --git a/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c b/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c new file mode 100644 index 0000000..a5d5a64 --- /dev/null +++ b/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpiCmnd.c @@ -0,0 +1,249 @@ +/******************************************************************************* +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; +} + -- cgit v1.2.3