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
s5pc100_ide_cfg_gpios(unsigned int base,unsigned int nr)20 static void s5pc100_ide_cfg_gpios(unsigned int base, unsigned int nr)
21 {
22 s3c_gpio_cfgrange_nopull(base, nr, S3C_GPIO_SFN(4));
23
24 for (; nr > 0; nr--, base++)
25 s5p_gpio_set_drvstr(base, S5P_GPIO_DRVSTR_LV4);
26 }
27
s5pc100_ide_setup_gpio(void)28 void s5pc100_ide_setup_gpio(void)
29 {
30 u32 reg;
31
32 /* Independent CF interface, CF chip select configuration */
33 reg = readl(S5PC100_MEM_SYS_CFG) & (~0x3f);
34 writel(reg | MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S5PC100_MEM_SYS_CFG);
35
36 /* CF_Add[0 - 2], CF_IORDY, CF_INTRQ, CF_DMARQ, CF_DMARST, CF_DMACK */
37 s5pc100_ide_cfg_gpios(S5PC100_GPJ0(0), 8);
38
39 /*CF_Data[0 - 7] */
40 s5pc100_ide_cfg_gpios(S5PC100_GPJ2(0), 8);
41
42 /* CF_Data[8 - 15] */
43 s5pc100_ide_cfg_gpios(S5PC100_GPJ3(0), 8);
44
45 /* CF_CS0, CF_CS1, CF_IORD, CF_IOWR */
46 s5pc100_ide_cfg_gpios(S5PC100_GPJ4(0), 4);
47
48 /* EBI_OE, EBI_WE */
49 s3c_gpio_cfgpin_range(S5PC100_GPK0(6), 2, S3C_GPIO_SFN(0));
50
51 /* CF_OE, CF_WE */
52 s3c_gpio_cfgrange_nopull(S5PC100_GPK1(6), 8, S3C_GPIO_SFN(2));
53
54 /* CF_CD */
55 s3c_gpio_cfgpin(S5PC100_GPK3(5), S3C_GPIO_SFN(2));
56 s3c_gpio_setpull(S5PC100_GPK3(5), S3C_GPIO_PULL_NONE);
57 }
58