omap_spi.c

来自「omap5912 spi interface driver」· C语言 代码 · 共 53 行

#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/wait.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/err.h>

#include <asm/delay.h>
#include <asm/io.h>
#include <asm/irq.h>

#include <asm/arch/dma.h>
#include <asm/arch/mux.h>
#include <asm/arch/irqs.h>
#include <asm/arch/dsp_common.h>
#include <asm/arch/mcbsp.h>
#include <asm/mach-types.h>

#include <asm/hardware/clock.h>
#include <asm/arch/spi/soc.h>
#include <asm/arch/spi/csl_spi.h>

static int __init omap_spi_init(void)
{
        CSL_Status status;
        CSL_SpiBaseAddress   baseAddress;
	unsigned int spi_version = 0;

	if (machine_is_omap_osk()) {
		omap_cfg_reg(N15_1610_SPI_SCK);
		omap_cfg_reg(R15_1610_SPI_SDO);
		omap_cfg_reg(R17_1610_SPI_CS0);

		
        }



        status = CSL_spiGetBaseAddress(CSL_SPI, NULL, &baseAddress);
        spi_version = *((unsigned int *)(baseAddress.regs));
	printk(KERN_INFO "OMAP5912 SPI version %d.%d, <[e-mail]> \n", spi_version >> 4, spi_version & 0x0f);
	printk(KERN_INFO "SPI-SSR 0x%x\n", *((unsigned int *)(baseAddress.regs) + 1));

        if (CSL_SOK != CSL_spiInit(NULL)) {
            return (-1);
        }

	return 0;
}

arch_initcall(omap_spi_init);