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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 | ||
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20 | static void s5pc100_ide_cfg_gpios(unsigned int base, unsigned int nr) |
21 | { | |
20dbc43d | 22 | s3c_gpio_cfgrange_nopull(base, nr, S3C_GPIO_SFN(4)); |
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23 | |
24 | for (; nr > 0; nr--, base++) | |
25 | s5p_gpio_set_drvstr(base, S5P_GPIO_DRVSTR_LV4); | |
26 | } | |
27 | ||
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28 | void s5pc100_ide_setup_gpio(void) |
29 | { | |
30 | u32 reg; | |
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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 */ | |
e27ecd73 | 37 | s5pc100_ide_cfg_gpios(S5PC100_GPJ0(0), 8); |
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38 | |
39 | /*CF_Data[0 - 7] */ | |
e27ecd73 | 40 | s5pc100_ide_cfg_gpios(S5PC100_GPJ2(0), 8); |
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41 | |
42 | /* CF_Data[8 - 15] */ | |
e27ecd73 | 43 | s5pc100_ide_cfg_gpios(S5PC100_GPJ3(0), 8); |
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44 | |
45 | /* CF_CS0, CF_CS1, CF_IORD, CF_IOWR */ | |
e27ecd73 | 46 | s5pc100_ide_cfg_gpios(S5PC100_GPJ4(0), 4); |
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47 | |
48 | /* EBI_OE, EBI_WE */ | |
e27ecd73 | 49 | s3c_gpio_cfgpin_range(S5PC100_GPK0(6), 2, S3C_GPIO_SFN(0)); |
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50 | |
51 | /* CF_OE, CF_WE */ | |
20dbc43d | 52 | s3c_gpio_cfgrange_nopull(S5PC100_GPK1(6), 8, S3C_GPIO_SFN(2)); |
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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 | } |