arch/arm/mach-s3c64xx/setup-ide.c

   1 /* linux/arch/arm/mach-s3c64xx/setup-ide.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * S3C64XX setup information for IDE
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/gpio.h>
  15 #include <linux/io.h>
  16
  17 #include <mach/map.h>
  18 #include <mach/regs-clock.h>
  19 #include <plat/gpio-cfg.h>
  20 #include <plat/ata.h>
  21
  22 void s3c64xx_ide_setup_gpio(void)
  23 {
  24         u32 reg;
  25
  26         reg = readl(S3C_MEM_SYS_CFG) & (~0x3f);
  27
  28         /* Independent CF interface, CF chip select configuration */
  29         writel(reg | MEM_SYS_CFG_INDEP_CF |
  30                 MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S3C_MEM_SYS_CFG);
  31
  32         s3c_gpio_cfgpin(S3C64XX_GPB(4), S3C_GPIO_SFN(4));
  33
  34         /* Set XhiDATA[15:0] pins as CF Data[15:0] */
  35         s3c_gpio_cfgpin_range(S3C64XX_GPK(0), 16, S3C_GPIO_SFN(5));
  36
  37         /* Set XhiADDR[2:0] pins as CF ADDR[2:0] */
  38         s3c_gpio_cfgpin_range(S3C64XX_GPL(0), 3, S3C_GPIO_SFN(6));
  39
  40         /* Set Xhi ctrl pins as CF ctrl pins(IORDY, IOWR, IORD, CE[0:1]) */
  41         s3c_gpio_cfgpin(S3C64XX_GPM(5), S3C_GPIO_SFN(1));
  42         s3c_gpio_cfgpin_range(S3C64XX_GPM(0), 5, S3C_GPIO_SFN(6));
  43 }