diff options
Diffstat (limited to 'cpu/mcf5227x')
| -rw-r--r-- | cpu/mcf5227x/Makefile | 2 | ||||
| -rw-r--r-- | cpu/mcf5227x/cpu_init.c | 53 | ||||
| -rw-r--r-- | cpu/mcf5227x/dspi.c | 261 |
3 files changed, 54 insertions, 262 deletions
diff --git a/cpu/mcf5227x/Makefile b/cpu/mcf5227x/Makefile index 44f9385..d0e9b45 100644 --- a/cpu/mcf5227x/Makefile +++ b/cpu/mcf5227x/Makefile @@ -28,7 +28,7 @@ include $(TOPDIR)/config.mk LIB = lib$(CPU).a START = start.o -COBJS = cpu.o speed.o cpu_init.o interrupts.o dspi.o +COBJS = cpu.o speed.o cpu_init.o interrupts.o SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/mcf5227x/cpu_init.c b/cpu/mcf5227x/cpu_init.c index 8945ef3..d8bcf37 100644 --- a/cpu/mcf5227x/cpu_init.c +++ b/cpu/mcf5227x/cpu_init.c @@ -152,3 +152,56 @@ void uart_port_conf(void) break; } } + +#ifdef CONFIG_CF_DSPI +void cfspi_port_conf(void) +{ + volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; + + gpio->par_dspi = + GPIO_PAR_DSPI_SIN_SIN | GPIO_PAR_DSPI_SOUT_SOUT | + GPIO_PAR_DSPI_SCK_SCK; +} + +int cfspi_claim_bus(uint bus, uint cs) +{ + volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; + volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; + + if ((dspi->sr & DSPI_SR_TXRXS) != DSPI_SR_TXRXS) + return -1; + + /* Clear FIFO and resume transfer */ + dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF); + + switch (cs) { + case 0: + gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_MASK; + gpio->par_dspi |= GPIO_PAR_DSPI_PCS0_PCS0; + break; + case 2: + gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK; + gpio->par_timer |= GPIO_PAR_TIMER_T2IN_DSPIPCS2; + break; + } + + return 0; +} + +void cfspi_release_bus(uint bus, uint cs) +{ + volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI; + volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; + + dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF); /* Clear FIFO */ + + switch (cs) { + case 0: + gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0; + break; + case 2: + gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK; + break; + } +} +#endif diff --git a/cpu/mcf5227x/dspi.c b/cpu/mcf5227x/dspi.c deleted file mode 100644 index 7f48f91..0000000 --- a/cpu/mcf5227x/dspi.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - * - * (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_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) -{ - volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; - struct spi_slave *slave; - - slave = malloc(sizeof(struct spi_slave)); - if (!slave) - return NULL; - - switch (cs) { - case 0: - gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0; - gpio->par_dspi |= GPIO_PAR_DSPI_PCS0_PCS0; - break; - case 2: - gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK; - gpio->par_timer |= GPIO_PAR_TIMER_T2IN_DSPIPCS2; - break; - } - - slave->bus = bus; - slave->cs = cs; - - return slave; -} - -void spi_free_slave(struct spi_slave *slave) -{ - volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; - - switch (slave->cs) { - case 0: - gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0; - break; - case 2: - gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK; - break; - } - - 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 == 4) - if ((spi_wr[1] == 0xFF) && (spi_wr[2] == 0xFF) - && (spi_wr[3] == 0xFF)) { - 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 */ |