diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpi.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpi.c | 576 |
1 files changed, 0 insertions, 576 deletions
diff --git a/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpi.c b/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpi.c deleted file mode 100644 index 39e0b720d1..0000000000 --- a/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/mv_hal/spi/mvSpi.c +++ /dev/null @@ -1,576 +0,0 @@ -/******************************************************************************* -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" - -#include "ctrlEnv/mvCtrlEnvLib.h" - -/* #define MV_DEBUG */ -#ifdef MV_DEBUG -#define DB(x) x -#define mvOsPrintf printf -#else -#define DB(x) -#endif - - -/******************************************************************************* -* mvSpi16bitDataTxRx - Transmt and receive data -* -* DESCRIPTION: -* Tx data and block waiting for data to be transmitted -* -********************************************************************************/ -static MV_STATUS mvSpi16bitDataTxRx (MV_U16 txData, MV_U16 * pRxData) -{ - MV_U32 i; - MV_BOOL ready = MV_FALSE; - - /* First clear the bit in the interrupt cause register */ - MV_REG_WRITE(MV_SPI_INT_CAUSE_REG, 0x0); - - /* Transmit data */ - MV_REG_WRITE(MV_SPI_DATA_OUT_REG, MV_16BIT_LE(txData)); - - /* wait with timeout for memory ready */ - for (i=0; i<MV_SPI_WAIT_RDY_MAX_LOOP; i++) - { - if (MV_REG_READ(MV_SPI_INT_CAUSE_REG)) - { - ready = MV_TRUE; - break; - } -#ifdef MV_SPI_SLEEP_ON_WAIT - mvOsSleep(1); -#endif /* MV_SPI_SLEEP_ON_WAIT */ - } - - if (!ready) - return MV_TIMEOUT; - - /* check that the RX data is needed */ - if (pRxData) - { - if ((MV_U32)pRxData & 0x1) /* check if address is not alligned to 16bit */ - { -#if defined(MV_CPU_LE) - /* perform the data write to the buffer in two stages with 8bit each */ - MV_U8 * bptr = (MV_U8*)pRxData; - MV_U16 data = MV_16BIT_LE(MV_REG_READ(MV_SPI_DATA_IN_REG)); - *bptr = (data & 0xFF); - ++bptr; - *bptr = ((data >> 8) & 0xFF); - -#elif defined(MV_CPU_BE) - - /* perform the data write to the buffer in two stages with 8bit each */ - MV_U8 * bptr = (MV_U8 *)pRxData; - MV_U16 data = MV_16BIT_LE(MV_REG_READ(MV_SPI_DATA_IN_REG)); - *bptr = ((data >> 8) & 0xFF); - ++bptr; - *bptr = (data & 0xFF); - -#else - #error "CPU endianess isn't defined!\n" -#endif - - } - else - *pRxData = MV_16BIT_LE(MV_REG_READ(MV_SPI_DATA_IN_REG)); - } - - return MV_OK; -} - - -/******************************************************************************* -* mvSpi8bitDataTxRx - Transmt and receive data (8bits) -* -* DESCRIPTION: -* Tx data and block waiting for data to be transmitted -* -********************************************************************************/ -static MV_STATUS mvSpi8bitDataTxRx (MV_U8 txData, MV_U8 * pRxData) -{ - MV_U32 i; - MV_BOOL ready = MV_FALSE; - - /* First clear the bit in the interrupt cause register */ - MV_REG_WRITE(MV_SPI_INT_CAUSE_REG, 0x0); - - /* Transmit data */ - MV_REG_WRITE(MV_SPI_DATA_OUT_REG, txData); - - /* wait with timeout for memory ready */ - for (i=0; i<MV_SPI_WAIT_RDY_MAX_LOOP; i++) - { - if (MV_REG_READ(MV_SPI_INT_CAUSE_REG)) - { - ready = MV_TRUE; - break; - } -#ifdef MV_SPI_SLEEP_ON_WAIT - mvOsSleep(1); -#endif /* MV_SPI_SLEEP_ON_WAIT */ - } - - if (!ready) - return MV_TIMEOUT; - - /* check that the RX data is needed */ - if (pRxData) - *pRxData = MV_REG_READ(MV_SPI_DATA_IN_REG); - - return MV_OK; -} - -/* -##################################################################################### -##################################################################################### -*/ - -/******************************************************************************* -* mvSpiInit - Initialize the SPI controller -* -* DESCRIPTION: -* Perform the neccessary initialization in order to be able to send an -* receive over the SPI interface. -* -* INPUT: -* serialBaudRate: Baud rate (SPI clock frequency) -* use16BitMode: Whether to use 2bytes (MV_TRUE) or 1bytes (MV_FALSE) -* -* OUTPUT: -* None. -* -* RETURN: -* Success or Error code. -* -* -*******************************************************************************/ -MV_STATUS mvSpiInit (MV_U32 serialBaudRate) -{ - MV_STATUS ret; - - /* Set the serial clock */ - if ((ret = mvSpiBaudRateSet(serialBaudRate)) != MV_OK) - return ret; - - /* For devices in which the SPI is muxed on the MPP with other interfaces*/ - mvMPPConfigToSPI(); - - /* Configure the default SPI mode to be 16bit */ - MV_REG_BIT_SET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* Fix ac timing on SPI in 6183, 6183L and 78x00 only */ - if ( (mvCtrlModelGet() == MV_6183_DEV_ID) || - (mvCtrlModelGet() == MV_6183L_DEV_ID) || - (mvCtrlModelGet() == MV_78100_DEV_ID) || - (mvCtrlModelGet() == MV_78200_DEV_ID) || - (mvCtrlModelGet() == MV_76100_DEV_ID)) - MV_REG_BIT_SET(MV_SPI_IF_CONFIG_REG, BIT14); - - /* Verify that the CS is deasserted */ - mvSpiCsDeassert(); - - return MV_OK; -} - -/******************************************************************************* -* mvSpiBaudRateSet - Set the Frequency of the SPI clock -* -* DESCRIPTION: -* Set the Prescale bits to adapt to the requested baud rate (the clock -* used for thr SPI). -* -* INPUT: -* serialBaudRate: Baud rate (SPI clock frequency) -* -* OUTPUT: -* None. -* -* RETURN: -* Success or Error code. -* -* -*******************************************************************************/ -MV_STATUS mvSpiBaudRateSet (MV_U32 serialBaudRate) -{ - MV_U8 i; - /* MV_U8 preScale[32] = {1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 2, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}; - */ - MV_U8 preScale[14] = { 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}; - MV_U8 bestPrescaleIndx = 100; - MV_U32 minBaudOffset = 0xFFFFFFFF; - MV_U32 cpuClk = mvBoardTclkGet(); /*mvCpuPclkGet();*/ - MV_U32 tempReg; - - /* Find the best prescale configuration - less or equal */ - for (i=0; i<14; i++) - { - /* check for higher - irrelevent */ - if ((cpuClk / preScale[i]) > serialBaudRate) - continue; - - /* check for exact fit */ - if ((cpuClk / preScale[i]) == serialBaudRate) - { - bestPrescaleIndx = i; - break; - } - - /* check if this is better than the previous one */ - if ((serialBaudRate - (cpuClk / preScale[i])) < minBaudOffset) - { - minBaudOffset = (serialBaudRate - (cpuClk / preScale[i])); - bestPrescaleIndx = i; - } - } - - if (bestPrescaleIndx > 14) - { - mvOsPrintf("%s ERROR: SPI baud rate prescale error!\n", __FUNCTION__); - return MV_OUT_OF_RANGE; - } - - /* configure the Prescale */ - tempReg = MV_REG_READ(MV_SPI_IF_CONFIG_REG); - tempReg = ((tempReg & ~MV_SPI_CLK_PRESCALE_MASK) | (bestPrescaleIndx + 0x12)); - MV_REG_WRITE(MV_SPI_IF_CONFIG_REG, tempReg); - - return MV_OK; -} - -/******************************************************************************* -* mvSpiCsAssert - Assert the Chip Select pin indicating a new transfer -* -* DESCRIPTION: -* Assert The chip select - used to select an external SPI device -* -* INPUT: -* None. -* -* OUTPUT: -* None. -* -* RETURN: -* Success or Error code. -* -********************************************************************************/ -MV_VOID mvSpiCsAssert(MV_VOID) -{ - /* For devices in which the SPI is muxed on the MPP with other interfaces*/ - mvMPPConfigToSPI(); - mvOsUDelay(1); - MV_REG_BIT_SET(MV_SPI_IF_CTRL_REG, MV_SPI_CS_ENABLE_MASK); -} - -/******************************************************************************* -* mvSpiCsDeassert - DeAssert the Chip Select pin indicating the end of a -* SPI transfer sequence -* -* DESCRIPTION: -* DeAssert the chip select pin -* -* INPUT: -* None. -* -* OUTPUT: -* None. -* -* RETURN: -* Success or Error code. -* -********************************************************************************/ -MV_VOID mvSpiCsDeassert(MV_VOID) -{ - MV_REG_BIT_RESET(MV_SPI_IF_CTRL_REG, MV_SPI_CS_ENABLE_MASK); - - /* For devices in which the SPI is muxed on the MPP with other interfaces*/ - mvMPPConfigToDefault(); -} - -/******************************************************************************* -* mvSpiRead - Read a buffer over the SPI interface -* -* DESCRIPTION: -* Receive (read) a buffer over the SPI interface in 16bit chunks. If the -* buffer size is odd, then the last chunk will be 8bits. Chip select is not -* handled at this level. -* -* INPUT: -* pRxBuff: Pointer to the buffer to hold the received data -* buffSize: length of the pRxBuff -* -* OUTPUT: -* pRxBuff: Pointer to the buffer with the received data -* -* RETURN: -* Success or Error code. -* -* -*******************************************************************************/ -MV_STATUS mvSpiRead (MV_U8* pRxBuff, MV_U32 buffSize) -{ - MV_STATUS ret; - MV_U32 bytesLeft = buffSize; - MV_U16* rxPtr = (MV_U16*)pRxBuff; - - /* check for null parameters */ - if (pRxBuff == NULL) - { - mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__); - return MV_BAD_PARAM; - } - - /* Check that the buffer pointer and the buffer size are 16bit aligned */ - if ((((MV_U32)buffSize & 1) == 0) && (((MV_U32)pRxBuff & 1) == 0)) - { - /* Verify that the SPI mode is in 16bit mode */ - MV_REG_BIT_SET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX as long we have complete 16bit chunks */ - while (bytesLeft >= MV_SPI_16_BIT_CHUNK_SIZE) - { - /* Transmitted and wait for the transfer to be completed */ - if ((ret = mvSpi16bitDataTxRx(MV_SPI_DUMMY_WRITE_16BITS, rxPtr)) != MV_OK) - return ret; - - /* increment the pointers */ - rxPtr++; - bytesLeft -= MV_SPI_16_BIT_CHUNK_SIZE; - } - - } - else - { - /* Verify that the SPI mode is in 8bit mode */ - MV_REG_BIT_RESET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX in 8bit chanks */ - while (bytesLeft > 0) - { - /* Transmitted and wait for the transfer to be completed */ - if ((ret = mvSpi8bitDataTxRx(MV_SPI_DUMMY_WRITE_8BITS, pRxBuff)) != MV_OK) - return ret; - /* increment the pointers */ - pRxBuff++; - bytesLeft--; - } - } - - return MV_OK; -} - -/******************************************************************************* -* mvSpiWrite - Transmit a buffer over the SPI interface -* -* DESCRIPTION: -* Transmit a buffer over the SPI interface in 16bit chunks. If the -* buffer size is odd, then the last chunk will be 8bits. No chip select -* action is taken. -* -* INPUT: -* pTxBuff: Pointer to the buffer holding the TX data -* buffSize: length of the pTxBuff -* -* OUTPUT: -* None. -* -* RETURN: -* Success or Error code. -* -* -*******************************************************************************/ -MV_STATUS mvSpiWrite(MV_U8* pTxBuff, MV_U32 buffSize) -{ - MV_STATUS ret; - MV_U32 bytesLeft = buffSize; - MV_U16* txPtr = (MV_U16*)pTxBuff; - - /* check for null parameters */ - if (pTxBuff == NULL) - { - mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__); - return MV_BAD_PARAM; - } - - /* Check that the buffer pointer and the buffer size are 16bit aligned */ - if ((((MV_U32)buffSize & 1) == 0) && (((MV_U32)pTxBuff & 1) == 0)) - { - /* Verify that the SPI mode is in 16bit mode */ - MV_REG_BIT_SET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX as long we have complete 16bit chunks */ - while (bytesLeft >= MV_SPI_16_BIT_CHUNK_SIZE) - { - /* Transmitted and wait for the transfer to be completed */ - if ((ret = mvSpi16bitDataTxRx(*txPtr, NULL)) != MV_OK) - return ret; - - /* increment the pointers */ - txPtr++; - bytesLeft -= MV_SPI_16_BIT_CHUNK_SIZE; - } - } - else - { - - /* Verify that the SPI mode is in 8bit mode */ - MV_REG_BIT_RESET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX in 8bit chanks */ - while (bytesLeft > 0) - { - /* Transmitted and wait for the transfer to be completed */ - if ((ret = mvSpi8bitDataTxRx(*pTxBuff, NULL)) != MV_OK) - return ret; - - /* increment the pointers */ - pTxBuff++; - bytesLeft--; - } - } - - return MV_OK; -} - - -/******************************************************************************* -* mvSpiReadWrite - Read and Write a buffer simultanuosely -* -* 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. The SPI chip -* select is not handled implicitely. -* -* 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 mvSpiReadWrite(MV_U8* pRxBuff, MV_U8* pTxBuff, MV_U32 buffSize) -{ - MV_STATUS ret; - MV_U32 bytesLeft = buffSize; - MV_U16* txPtr = (MV_U16*)pTxBuff; - MV_U16* rxPtr = (MV_U16*)pRxBuff; - - /* check for null parameters */ - if ((pRxBuff == NULL) || (pTxBuff == NULL)) - { - mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__); - return MV_BAD_PARAM; - } - - /* Check that the buffer pointer and the buffer size are 16bit aligned */ - if ((((MV_U32)buffSize & 1) == 0) && (((MV_U32)pTxBuff & 1) == 0) && (((MV_U32)pRxBuff & 1) == 0)) - { - /* Verify that the SPI mode is in 16bit mode */ - MV_REG_BIT_SET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX as long we have complete 16bit chunks */ - while (bytesLeft >= MV_SPI_16_BIT_CHUNK_SIZE) - { - /* Transmitted and wait for the transfer to be completed */ - if ((ret = mvSpi16bitDataTxRx(*txPtr, rxPtr)) != MV_OK) - return ret; - - /* increment the pointers */ - txPtr++; - rxPtr++; - bytesLeft -= MV_SPI_16_BIT_CHUNK_SIZE; - } - } - else - { - /* Verify that the SPI mode is in 8bit mode */ - MV_REG_BIT_RESET(MV_SPI_IF_CONFIG_REG, MV_SPI_BYTE_LENGTH_MASK); - - /* TX/RX in 8bit chanks */ - while (bytesLeft > 0) - { - /* Transmitted and wait for the transfer to be completed */ - if ( (ret = mvSpi8bitDataTxRx(*pTxBuff, pRxBuff) ) != MV_OK) - return ret; - pRxBuff++; - pTxBuff++; - bytesLeft--; - } - } - - return MV_OK; -} - - |