summaryrefslogtreecommitdiff
path: root/cpu
diff options
context:
space:
mode:
authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-03-27 23:26:44 +0100
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-04-04 20:42:22 +0200
commit4758ebdd53571d4d183be5c2db8f0ee4ef368915 (patch)
tree39dfec6ea223a45f31d6f3beb67be4c431886251 /cpu
parent2b7178afce59f71e95da657273f4132012098c1f (diff)
downloadu-boot-imx-4758ebdd53571d4d183be5c2db8f0ee4ef368915.zip
u-boot-imx-4758ebdd53571d4d183be5c2db8f0ee4ef368915.tar.gz
u-boot-imx-4758ebdd53571d4d183be5c2db8f0ee4ef368915.tar.bz2
at91: move dataflash spi driver to drivers/spi
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/arm926ejs/at91/Makefile1
-rw-r--r--cpu/arm926ejs/at91/spi.c157
2 files changed, 0 insertions, 158 deletions
diff --git a/cpu/arm926ejs/at91/Makefile b/cpu/arm926ejs/at91/Makefile
index d0d47e6..34e7461 100644
--- a/cpu/arm926ejs/at91/Makefile
+++ b/cpu/arm926ejs/at91/Makefile
@@ -55,7 +55,6 @@ COBJS-y += at91sam9rl_serial.o
COBJS-$(CONFIG_HAS_DATAFLASH) += at91sam9rl_spi.o
endif
COBJS-$(CONFIG_AT91_LED) += led.o
-COBJS-$(CONFIG_HAS_DATAFLASH) += spi.o
COBJS-y += timer.o
SOBJS = lowlevel_init.o
diff --git a/cpu/arm926ejs/at91/spi.c b/cpu/arm926ejs/at91/spi.c
deleted file mode 100644
index 3eb252c..0000000
--- a/cpu/arm926ejs/at91/spi.c
+++ /dev/null
@@ -1,157 +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 <common.h>
-#include <asm/arch/hardware.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/io.h>
-#include <asm/arch/at91_pio.h>
-#include <asm/arch/at91_spi.h>
-
-#include <dataflash.h>
-
-#define AT91_SPI_PCS0_DATAFLASH_CARD 0xE /* Chip Select 0: NPCS0%1110 */
-#define AT91_SPI_PCS1_DATAFLASH_CARD 0xD /* Chip Select 0: NPCS0%1101 */
-#define AT91_SPI_PCS3_DATAFLASH_CARD 0x7 /* Chip Select 3: NPCS3%0111 */
-
-void AT91F_SpiInit(void)
-{
- /* Reset the SPI */
- writel(AT91_SPI_SWRST, AT91_BASE_SPI + AT91_SPI_CR);
-
- /* Configure SPI in Master Mode with No CS selected !!! */
- writel(AT91_SPI_MSTR | AT91_SPI_MODFDIS | AT91_SPI_PCS,
- AT91_BASE_SPI + AT91_SPI_MR);
-
- /* Configure CS0 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((AT91_MASTER_CLOCK / AT91_SPI_CLK) << 8),
- AT91_BASE_SPI + AT91_SPI_CSR(0));
-
-#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS1
- /* Configure CS1 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((AT91_MASTER_CLOCK / AT91_SPI_CLK) << 8),
- AT91_BASE_SPI + AT91_SPI_CSR(1));
-#endif
-
-#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS3
- /* Configure CS3 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((AT91_MASTER_CLOCK / AT91_SPI_CLK) << 8),
- AT91_BASE_SPI + AT91_SPI_CSR(3));
-#endif
-
- /* SPI_Enable */
- writel(AT91_SPI_SPIEN, AT91_BASE_SPI + AT91_SPI_CR);
-
- while (!(readl(AT91_BASE_SPI + AT91_SPI_SR) & AT91_SPI_SPIENS));
-
- /*
- * Add tempo to get SPI in a safe state.
- * Should not be needed for new silicon (Rev B)
- */
- udelay(500000);
- readl(AT91_BASE_SPI + AT91_SPI_SR);
- readl(AT91_BASE_SPI + AT91_SPI_RDR);
-
-}
-
-void AT91F_SpiEnable(int cs)
-{
- unsigned long mode;
-
- switch (cs) {
- case 0: /* Configure SPI CS0 for Serial DataFlash AT45DBxx */
- mode = readl(AT91_BASE_SPI + AT91_SPI_MR);
- mode &= 0xFFF0FFFF;
- writel(mode | ((AT91_SPI_PCS0_DATAFLASH_CARD<<16) & AT91_SPI_PCS),
- AT91_BASE_SPI + AT91_SPI_MR);
- break;
- case 1: /* Configure SPI CS1 for Serial DataFlash AT45DBxx */
- mode = readl(AT91_BASE_SPI + AT91_SPI_MR);
- mode &= 0xFFF0FFFF;
- writel(mode | ((AT91_SPI_PCS1_DATAFLASH_CARD<<16) & AT91_SPI_PCS),
- AT91_BASE_SPI + AT91_SPI_MR);
- break;
- case 3:
- mode = readl(AT91_BASE_SPI + AT91_SPI_MR);
- mode &= 0xFFF0FFFF;
- writel(mode | ((AT91_SPI_PCS3_DATAFLASH_CARD<<16) & AT91_SPI_PCS),
- AT91_BASE_SPI + AT91_SPI_MR);
- break;
- }
-
- /* SPI_Enable */
- writel(AT91_SPI_SPIEN, AT91_BASE_SPI + AT91_SPI_CR);
-}
-
-unsigned int AT91F_SpiWrite1(AT91PS_DataflashDesc pDesc);
-
-unsigned int AT91F_SpiWrite(AT91PS_DataflashDesc pDesc)
-{
- unsigned int timeout;
-
- pDesc->state = BUSY;
-
- writel(AT91_SPI_TXTDIS + AT91_SPI_RXTDIS, AT91_BASE_SPI + AT91_SPI_PTCR);
-
- /* Initialize the Transmit and Receive Pointer */
- writel((unsigned int)pDesc->rx_cmd_pt, AT91_BASE_SPI + AT91_SPI_RPR);
- writel((unsigned int)pDesc->tx_cmd_pt, AT91_BASE_SPI + AT91_SPI_TPR);
-
- /* Intialize the Transmit and Receive Counters */
- writel(pDesc->rx_cmd_size, AT91_BASE_SPI + AT91_SPI_RCR);
- writel(pDesc->tx_cmd_size, AT91_BASE_SPI + AT91_SPI_TCR);
-
- if (pDesc->tx_data_size != 0) {
- /* Initialize the Next Transmit and Next Receive Pointer */
- writel((unsigned int)pDesc->rx_data_pt, AT91_BASE_SPI + AT91_SPI_RNPR);
- writel((unsigned int)pDesc->tx_data_pt, AT91_BASE_SPI + AT91_SPI_TNPR);
-
- /* Intialize the Next Transmit and Next Receive Counters */
- writel(pDesc->rx_data_size, AT91_BASE_SPI + AT91_SPI_RNCR);
- writel(pDesc->tx_data_size, AT91_BASE_SPI + AT91_SPI_TNCR);
- }
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
- timeout = 0;
-
- writel(AT91_SPI_TXTEN + AT91_SPI_RXTEN, AT91_BASE_SPI + AT91_SPI_PTCR);
- while (!(readl(AT91_BASE_SPI + AT91_SPI_SR) & AT91_SPI_RXBUFF) &&
- ((timeout = get_timer_masked()) < CONFIG_SYS_SPI_WRITE_TOUT));
- writel(AT91_SPI_TXTDIS + AT91_SPI_RXTDIS, AT91_BASE_SPI + AT91_SPI_PTCR);
- pDesc->state = IDLE;
-
- if (timeout >= CONFIG_SYS_SPI_WRITE_TOUT) {
- printf("Error Timeout\n\r");
- return DATAFLASH_ERROR;
- }
-
- return DATAFLASH_OK;
-}