+++ /dev/null
-/*
- *
- * (C) Copyright 2000-2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
- * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 <spi.h>
-#include <malloc.h>
-
-#if defined(CONFIG_CF_DSPI)
-#include <asm/immap.h>
-
-void dspi_init(void)
-{
- volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
- volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
-
- gpio->par_dspi = GPIO_PAR_DSPI_PCS5_PCS5 | GPIO_PAR_DSPI_PCS2_PCS2 |
- GPIO_PAR_DSPI_PCS1_PCS1 | GPIO_PAR_DSPI_PCS0_PCS0 |
- GPIO_PAR_DSPI_SIN_SIN | GPIO_PAR_DSPI_SOUT_SOUT |
- GPIO_PAR_DSPI_SCK_SCK;
-
- dspi->dmcr = DSPI_DMCR_MSTR | DSPI_DMCR_CSIS7 | DSPI_DMCR_CSIS6 |
- DSPI_DMCR_CSIS5 | DSPI_DMCR_CSIS4 | DSPI_DMCR_CSIS3 |
- DSPI_DMCR_CSIS2 | DSPI_DMCR_CSIS1 | DSPI_DMCR_CSIS0 |
- DSPI_DMCR_CRXF | DSPI_DMCR_CTXF;
-
-#ifdef CONFIG_SYS_DSPI_DCTAR0
- dspi->dctar0 = CONFIG_SYS_DSPI_DCTAR0;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR1
- dspi->dctar1 = CONFIG_SYS_DSPI_DCTAR1;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR2
- dspi->dctar2 = CONFIG_SYS_DSPI_DCTAR2;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR3
- dspi->dctar3 = CONFIG_SYS_DSPI_DCTAR3;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR4
- dspi->dctar4 = CONFIG_SYS_DSPI_DCTAR4;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR5
- dspi->dctar5 = CONFIG_SYS_DSPI_DCTAR5;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR6
- dspi->dctar6 = CONFIG_SYS_DSPI_DCTAR6;
-#endif
-#ifdef CONFIG_SYS_DSPI_DCTAR7
- dspi->dctar7 = CONFIG_SYS_DSPI_DCTAR7;
-#endif
-}
-
-void dspi_tx(int chipsel, u8 attrib, u16 data)
-{
- volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
-
- while ((dspi->dsr & 0x0000F000) >= 4) ;
-
- dspi->dtfr = (attrib << 24) | ((1 << chipsel) << 16) | data;
-}
-
-u16 dspi_rx(void)
-{
- volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
-
- while ((dspi->dsr & 0x000000F0) == 0) ;
-
- return (dspi->drfr & 0xFFFF);
-}
-
-#if defined(CONFIG_CMD_SPI)
-void spi_init_f(void)
-{
-}
-
-void spi_init_r(void)
-{
-}
-
-void spi_init(void)
-{
- dspi_init();
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct spi_slave *slave;
-
- slave = malloc(sizeof(struct spi_slave));
- if (!slave)
- return NULL;
-
- slave->bus = bus;
- slave->cs = cs;
-
- return slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- free(slave);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
- return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
- void *din, unsigned long flags)
-{
- static int bWrite = 0;
- u8 *spi_rd, *spi_wr;
- int len = bitlen >> 3;
-
- spi_rd = (u8 *) din;
- spi_wr = (u8 *) dout;
-
- /* command handling */
- if (((len == 4) || (len == 1) || (len == 5)) && (dout != NULL)) {
- switch (*spi_wr) {
- case 0x02: /* Page Prog */
- bWrite = 1;
- dspi_tx(slave->cs, 0x80, spi_wr[0]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[1]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[2]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[3]);
- dspi_rx();
- return 0;
- case 0x05: /* Read Status */
- if (len == 1) {
- dspi_tx(slave->cs, 0x80, *spi_wr);
- dspi_rx();
- }
- return 0;
- case 0x06: /* WREN */
- dspi_tx(slave->cs, 0x00, *spi_wr);
- dspi_rx();
- return 0;
- case 0x0B: /* Fast read */
- if ((len == 5) && (spi_wr[4] == 0)) {
- dspi_tx(slave->cs, 0x80, spi_wr[0]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[1]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[2]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[3]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[4]);
- dspi_rx();
- }
- return 0;
- case 0x9F: /* RDID */
- dspi_tx(slave->cs, 0x80, *spi_wr);
- dspi_rx();
- return 0;
- case 0xD8: /* Sector erase */
- if (len == 4)
- if ((spi_wr[2] == 0) && (spi_wr[3] == 0)) {
- dspi_tx(slave->cs, 0x80, spi_wr[0]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[1]);
- dspi_rx();
- dspi_tx(slave->cs, 0x80, spi_wr[2]);
- dspi_rx();
- dspi_tx(slave->cs, 0x00, spi_wr[3]);
- dspi_rx();
- }
- return 0;
- }
- }
-
- if (bWrite)
- len--;
-
- while (len--) {
- if (dout != NULL) {
- dspi_tx(slave->cs, 0x80, *spi_wr);
- dspi_rx();
- spi_wr++;
- }
-
- if (din != NULL) {
- dspi_tx(slave->cs, 0x80, 0);
- *spi_rd = dspi_rx();
- spi_rd++;
- }
- }
-
- if (flags == SPI_XFER_END) {
- if (bWrite) {
- dspi_tx(slave->cs, 0x00, *spi_wr);
- dspi_rx();
- bWrite = 0;
- } else {
- dspi_tx(slave->cs, 0x00, 0);
- dspi_rx();
- }
- }
-
- return 0;
-}
-#endif /* CONFIG_CMD_SPI */
-
-#endif /* CONFIG_CF_DSPI */
projects / oweals / u-boot.git / blobdiff