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1 | /* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c |
2 | * | |
3 | * Copyright 2009 Samsung Eletronics | |
4 | * | |
5 | * S5PC1XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/gpio.h> | |
18 | #include <linux/mmc/host.h> | |
19 | #include <linux/mmc/card.h> | |
20 | ||
21 | #include <plat/gpio-cfg.h> | |
22 | #include <plat/regs-sdhci.h> | |
23 | ||
24 | void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) | |
25 | { | |
26 | unsigned int gpio; | |
27 | unsigned int end; | |
28 | unsigned int num; | |
29 | ||
30 | num = width; | |
31 | /* In case of 8 width, we should decrease the 2 */ | |
32 | if (width == 8) | |
33 | num = width - 2; | |
34 | ||
35 | end = S5PC100_GPG0(2 + num); | |
36 | ||
37 | /* Set all the necessary GPG0/GPG1 pins to special-function 0 */ | |
38 | for (gpio = S5PC100_GPG0(0); gpio < end; gpio++) { | |
39 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | |
40 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | |
41 | } | |
42 | ||
43 | if (width == 8) { | |
44 | for (gpio = S5PC100_GPG1(0); gpio <= S5PC100_GPG1(1); gpio++) { | |
45 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | |
46 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | |
47 | } | |
48 | } | |
49 | ||
50 | s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP); | |
51 | s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2)); | |
52 | } | |
53 | ||
54 | void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) | |
55 | { | |
56 | unsigned int gpio; | |
57 | unsigned int end; | |
58 | ||
59 | end = S5PC100_GPG2(2 + width); | |
60 | ||
61 | /* Set all the necessary GPG2 pins to special-function 2 */ | |
62 | for (gpio = S5PC100_GPG2(0); gpio < end; gpio++) { | |
63 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | |
64 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | |
65 | } | |
66 | ||
67 | s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP); | |
68 | s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2)); | |
69 | } | |
70 | ||
71 | void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) | |
72 | { | |
73 | unsigned int gpio; | |
74 | unsigned int end; | |
75 | ||
76 | end = S5PC100_GPG3(2 + width); | |
77 | ||
78 | /* Set all the necessary GPG3 pins to special-function 2 */ | |
79 | for (gpio = S5PC100_GPG3(0); gpio < end; gpio++) { | |
80 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | |
81 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | |
82 | } | |
83 | ||
84 | s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP); | |
85 | s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2)); | |
86 | } |