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
20static 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
28void 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}