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

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4 //              http://www.samsung.com/
   5 //
   6 // S3C64XX setup information for IDE
   7
   8 #include <linux/kernel.h>
   9 #include <linux/gpio.h>
  10 #include <linux/io.h>
  11
  12 #include <mach/map.h>
  13 #include <mach/regs-clock.h>
  14 #include <plat/gpio-cfg.h>
  15 #include <mach/gpio-samsung.h>
  16 #include <linux/platform_data/ata-samsung_cf.h>
  17
  18 void s3c64xx_ide_setup_gpio(void)
  19 {
  20         u32 reg;
  21
  22         reg = readl(S3C_MEM_SYS_CFG) & (~0x3f);
  23
  24         /* Independent CF interface, CF chip select configuration */
  25         writel(reg | MEM_SYS_CFG_INDEP_CF |
  26                 MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S3C_MEM_SYS_CFG);
  27
  28         s3c_gpio_cfgpin(S3C64XX_GPB(4), S3C_GPIO_SFN(4));
  29
  30         /* Set XhiDATA[15:0] pins as CF Data[15:0] */
  31         s3c_gpio_cfgpin_range(S3C64XX_GPK(0), 16, S3C_GPIO_SFN(5));
  32
  33         /* Set XhiADDR[2:0] pins as CF ADDR[2:0] */
  34         s3c_gpio_cfgpin_range(S3C64XX_GPL(0), 3, S3C_GPIO_SFN(6));
  35
  36         /* Set Xhi ctrl pins as CF ctrl pins(IORDY, IOWR, IORD, CE[0:1]) */
  37         s3c_gpio_cfgpin(S3C64XX_GPM(5), S3C_GPIO_SFN(1));
  38         s3c_gpio_cfgpin_range(S3C64XX_GPM(0), 5, S3C_GPIO_SFN(6));
  39 }