release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-s5pc100/setup-ide.c

   1 /* linux/arch/arm/mach-s5pc100/setup-ide.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * S5PC100 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/regs-clock.h>
  18 #include <plat/gpio-cfg.h>
  19
  20 void s5pc100_ide_setup_gpio(void)
  21 {
  22         u32 reg;
  23         u32 gpio = 0;
  24
  25         /* Independent CF interface, CF chip select configuration */
  26         reg = readl(S5PC100_MEM_SYS_CFG) & (~0x3f);
  27         writel(reg | MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S5PC100_MEM_SYS_CFG);
  28
  29         /* CF_Add[0 - 2], CF_IORDY, CF_INTRQ, CF_DMARQ, CF_DMARST, CF_DMACK */
  30         for (gpio = S5PC100_GPJ0(0); gpio <= S5PC100_GPJ0(7); gpio++) {
  31                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(4));
  32                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  33                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  34         }
  35
  36         /*CF_Data[0 - 7] */
  37         for (gpio = S5PC100_GPJ2(0); gpio <= S5PC100_GPJ2(7); gpio++) {
  38                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(4));
  39                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  40                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  41         }
  42
  43         /* CF_Data[8 - 15] */
  44         for (gpio = S5PC100_GPJ3(0); gpio <= S5PC100_GPJ3(7); gpio++) {
  45                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(4));
  46                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  47                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  48         }
  49
  50         /* CF_CS0, CF_CS1, CF_IORD, CF_IOWR */
  51         for (gpio = S5PC100_GPJ4(0); gpio <= S5PC100_GPJ4(3); gpio++) {
  52                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(4));
  53                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  54                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  55         }
  56
  57         /* EBI_OE, EBI_WE */
  58         for (gpio = S5PC100_GPK0(6); gpio <= S5PC100_GPK0(7); gpio++)
  59                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0));
  60
  61         /* CF_OE, CF_WE */
  62         for (gpio = S5PC100_GPK1(6); gpio <= S5PC100_GPK1(7); gpio++) {
  63                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  64                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  65         }
  66
  67         /* CF_CD */
  68         s3c_gpio_cfgpin(S5PC100_GPK3(5), S3C_GPIO_SFN(2));
  69         s3c_gpio_setpull(S5PC100_GPK3(5), S3C_GPIO_PULL_NONE);
  70 }