setup-ide.c

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/* linux/arch/arm/mach-s3c64xx/setup-ide.c
 *
 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
 *      http://www.samsung.com/
 *
 * S3C64XX setup information for IDE
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/io.h>

#include <mach/map.h>
#include <mach/regs-clock.h>
#include <plat/gpio-cfg.h>
#include <linux/platform_data/ata-samsung_cf.h>

void s3c64xx_ide_setup_gpio(void)
{
    u32 reg;

    reg = readl(S3C_MEM_SYS_CFG) & (~0x3f);

    /* Independent CF interface, CF chip select configuration */
    writel(reg | MEM_SYS_CFG_INDEP_CF |
        MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S3C_MEM_SYS_CFG);

    s3c_gpio_cfgpin(S3C64XX_GPB(4), S3C_GPIO_SFN(4));

    /* Set XhiDATA[15:0] pins as CF Data[15:0] */
    s3c_gpio_cfgpin_range(S3C64XX_GPK(0), 16, S3C_GPIO_SFN(5));

    /* Set XhiADDR[2:0] pins as CF ADDR[2:0] */
    s3c_gpio_cfgpin_range(S3C64XX_GPL(0), 3, S3C_GPIO_SFN(6));

    /* Set Xhi ctrl pins as CF ctrl pins(IORDY, IOWR, IORD, CE[0:1]) */
    s3c_gpio_cfgpin(S3C64XX_GPM(5), S3C_GPIO_SFN(1));
    s3c_gpio_cfgpin_range(S3C64XX_GPM(0), 5, S3C_GPIO_SFN(6));
}