/*
* Initialize the SPI controller
*/
static int __init at91_spi_init(void)
{
init_MUTEX(&spi_lock);
AT91_CfgPIO_SPI();
controller->SPI_CR = AT91C_SPI_SWRST; /* software reset of SPI controller */
/* Set Chip Select registers to good defaults */
controller->SPI_CSR0 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_CSR1 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_CSR2 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_CSR3 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_PTCR = AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS;
memset(&spi_dev, 0, sizeof(spi_dev));
spi_dev[0].pcs = 0xE;
spi_dev[1].pcs = 0xD;
spi_dev[2].pcs = 0xB;
spi_dev[3].pcs = 0x7;
if (request_irq(AT91C_ID_SPI, spi_interrupt, 0, "spi", NULL))
return -EBUSY;
controller->SPI_CR = AT91C_SPI_SPIEN; /* Enable SPI */
return 0;
}
/*
* Initialize the SPI controller
*/
static int __init at91_spi_init(void)
{
init_MUTEX(&spi_lock);
AT91_CfgPIO_SPI();
controller->SPI_CR = AT91C_SPI_SWRST; /* software reset of SPI controller */
/* Set Chip Select registers to good defaults */
// controller->SPI_CSR0 = AT91C_SPI_CPOL |AT91C_SPI_NCPHA | AT91C_SPI_BITS_8 | (1 << 16) | (15 << 8);
controller->SPI_CSR0 = AT91C_SPI_BITS_8 | (16 << 16) | (15 << 8);
controller->SPI_CSR1 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_CSR2 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_CSR3 = AT91C_SPI_CPOL | AT91C_SPI_BITS_8 | (16 << 16) | (DEFAULT_SPI_BAUD << 8);
controller->SPI_PTCR = AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS;
memset(&spi_dev, 0, sizeof(spi_dev));
spi_dev[0].pcs = 0xE;
spi_dev[1].pcs = 0xD;
spi_dev[2].pcs = 0xB;
spi_dev[3].pcs = 0x7;
if (request_irq(AT91C_ID_SPI, spi_interrupt, 0, "dudu_spi", NULL))
{
printk(KERN_INFO "I am Busy.\n");
return -EBUSY;
}
controller->SPI_CR = AT91C_SPI_SPIEN; /* Enable SPI */
/******************************************************************************/
at91_set_gpio_output(AT91_PIN_PA24, 1);
at91_set_gpio_value(AT91_PIN_PA24, 1);
/******************************************************************************/
return 0;
}
