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Diffstat (limited to 'cpu/arm920t/at91rm9200/spi.c')
-rw-r--r--cpu/arm920t/at91rm9200/spi.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/cpu/arm920t/at91rm9200/spi.c b/cpu/arm920t/at91rm9200/spi.c
deleted file mode 100644
index f3cb5d8..0000000
--- a/cpu/arm920t/at91rm9200/spi.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* Driver for ATMEL DataFlash support
- * Author : Hamid Ikdoumi (Atmel)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
- */
-
-#include <config.h>
-#include <common.h>
-#include <asm/hardware.h>
-
-#ifdef CONFIG_HAS_DATAFLASH
-#include <dataflash.h>
-
-#define AT91C_SPI_CLK 10000000 /* Max Value = 10MHz to be compliant to
- the Continuous Array Read function */
-
-/* AC Characteristics */
-/* DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns */
-#define DATAFLASH_TCSS (0xC << 16)
-#define DATAFLASH_TCHS (0x1 << 24)
-
-#define AT91C_TIMEOUT_WRDY 200000
-#define AT91C_SPI_PCS0_SERIAL_DATAFLASH 0xE /* Chip Select 0: NPCS0%1110 */
-#define AT91C_SPI_PCS3_DATAFLASH_CARD 0x7 /* Chip Select 3: NPCS3%0111 */
-
-/*-------------------------------------------------------------------*/
-/* SPI DataFlash Init */
-/*-------------------------------------------------------------------*/
-void AT91F_SpiInit(void)
-{
- /* Configure PIOs */
- AT91C_BASE_PIOA->PIO_ASR =
- AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI |
- AT91C_PA5_NPCS2 | AT91C_PA6_NPCS3 | AT91C_PA0_MISO |
- AT91C_PA2_SPCK;
- AT91C_BASE_PIOA->PIO_PDR =
- AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI |
- AT91C_PA5_NPCS2 | AT91C_PA6_NPCS3 | AT91C_PA0_MISO |
- AT91C_PA2_SPCK;
- /* Enable CLock */
- AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SPI;
-
- /* Reset the SPI */
- AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
-
- /* Configure SPI in Master Mode with No CS selected !!! */
- AT91C_BASE_SPI->SPI_MR =
- AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
-
- /* Configure CS0 and CS3 */
- *(AT91C_SPI_CSR + 0) =
- AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91C_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-
- *(AT91C_SPI_CSR + 3) =
- AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91C_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-}
-
-void AT91F_SpiEnable(int cs)
-{
- switch(cs) {
- case 0: /* Configure SPI CS0 for Serial DataFlash AT45DBxx */
- AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
- AT91C_BASE_SPI->SPI_MR |=
- ((AT91C_SPI_PCS0_SERIAL_DATAFLASH<<16) &
- AT91C_SPI_PCS);
- break;
- case 3: /* Configure SPI CS3 for Serial DataFlash Card */
- /* Set up PIO SDC_TYPE to switch on DataFlash Card */
- /* and not MMC/SDCard */
- AT91C_BASE_PIOB->PIO_PER =
- AT91C_PIO_PB7; /* Set in PIO mode */
- AT91C_BASE_PIOB->PIO_OER =
- AT91C_PIO_PB7; /* Configure in output */
- /* Clear Output */
- AT91C_BASE_PIOB->PIO_CODR = AT91C_PIO_PB7;
- /* Configure PCS */
- AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
- AT91C_BASE_SPI->SPI_MR |=
- ((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
- break;
- }
-
- /* SPI_Enable */
- AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN; }
-
-/*---------------------------------------------------------------------------*/
-/* \fn AT91F_SpiWrite */
-/* \brief Set the PDC registers for a transfert */
-/*---------------------------------------------------------------------------*/
-unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc )
-{
- unsigned int timeout;
-
- pDesc->state = BUSY;
-
- AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
-
- /* Initialize the Transmit and Receive Pointer */
- AT91C_BASE_SPI->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt ;
- AT91C_BASE_SPI->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt ;
-
- /* Intialize the Transmit and Receive Counters */
- AT91C_BASE_SPI->SPI_RCR = pDesc->rx_cmd_size;
- AT91C_BASE_SPI->SPI_TCR = pDesc->tx_cmd_size;
-
- if ( pDesc->tx_data_size != 0 ) {
- /* Initialize the Next Transmit and Next Receive Pointer */
- AT91C_BASE_SPI->SPI_RNPR = (unsigned int)pDesc->rx_data_pt ;
- AT91C_BASE_SPI->SPI_TNPR = (unsigned int)pDesc->tx_data_pt ;
-
- /* Intialize the Next Transmit and Next Receive Counters */
- AT91C_BASE_SPI->SPI_RNCR = pDesc->rx_data_size ;
- AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
- }
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
- timeout = 0;
-
- AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
- while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF) &&
- ((timeout = get_timer_masked() ) < CONFIG_SYS_SPI_WRITE_TOUT));
- AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
- pDesc->state = IDLE;
-
- if (timeout >= CONFIG_SYS_SPI_WRITE_TOUT){
- printf("Error Timeout\n\r");
- return DATAFLASH_ERROR;
- }
-
- return DATAFLASH_OK;
-}
-#endif