/*
* 初始化SPI寄存器
* */
static void spi_init(void)
{
#ifdef _DEBUG_GM814X
printk(KERN_INFO "2-----spi_init------\n");
#endif
gpio_select();
clock_enable();
spi_reset();
// 1. SET CH_CFG
CH_CFG = HIGH_SPEED_EN | SW_RST | MASTER | CPOL | CPHA;
// 2. SET CLK_CFG
CLK_CFG &= ~ ( 0x7ff );
CLK_CFG = SPI_CLKSEL | ENCLK | SPI_SCALER;
// 3. SET MODE_CFG
MODE_CFG &= ( u32 ) ( 1 << 31 );
MODE_CFG = CH_WIDTH | TRAILING_CNT | BUS_WIDTH | RX_RDY_LVL | TX_RDY_LVL | RX_DMA_SW | TX_DMA_SW | DMA_TYPE;
// 4. SET SLAVE_SEL
SLAVE_SEL = SLAVE_CS_HIGH |SLAVE_AUTO_OFF;
// 5. SET SPI_INT_EN
SPI_INT_EN = SPI_INT_ENABLE;
// 6. SET SWAP_CONFIG
SWAP_CONFIG = RX_SWAP_EN | RX_SWAP_MODE | TX_SWAP_EN | TX_SWAP_MODE;
#ifdef _DEBUG_GM814X
printk(KERN_INFO "2------spi_init end---------\n");
#endif
}
void gpio_actled_select()
{
gpio_select(GPIO_PIN_ACTLED);
}
void gpio_pwrled_select()
{
gpio_select(GPIO_PIN_PWRLED);
}
