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1 | /* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c |
2 | * |
3 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. |
4 | * http://www.samsung.com/ |
5 | * |
6 | * S5PV210 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) |
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/types.h> |
15 | #include <linux/interrupt.h> |
16 | #include <linux/platform_device.h> |
17 | #include <linux/io.h> |
18 | #include <linux/gpio.h> |
19 | #include <linux/mmc/host.h> |
20 | #include <linux/mmc/card.h> |
21 | |
22 | #include <plat/gpio-cfg.h> |
23 | #include <plat/regs-sdhci.h> |
24 | #include <plat/sdhci.h> |
25 | |
26 | void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) |
27 | { |
28 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
29 | |
30 | /* Set all the necessary GPG0/GPG1 pins to special-function 2 */ |
31 | s3c_gpio_cfgrange_nopull(S5PV210_GPG0(0), 2, S3C_GPIO_SFN(2)); |
32 | |
33 | switch (width) { |
34 | case 8: |
35 | /* GPG1[3:6] special-funtion 3 */ |
36 | s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(3)); |
37 | case 4: |
38 | /* GPG0[3:6] special-funtion 2 */ |
39 | s3c_gpio_cfgrange_nopull(S5PV210_GPG0(3), 4, S3C_GPIO_SFN(2)); |
40 | default: |
41 | break; |
42 | } |
43 | |
44 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
45 | s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP); |
46 | s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2)); |
47 | } |
48 | } |
49 | |
50 | void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) |
51 | { |
52 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
53 | |
54 | /* Set all the necessary GPG1[0:1] pins to special-function 2 */ |
55 | s3c_gpio_cfgrange_nopull(S5PV210_GPG1(0), 2, S3C_GPIO_SFN(2)); |
56 | |
57 | /* Data pin GPG1[3:6] to special-function 2 */ |
58 | s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(2)); |
59 | |
60 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
61 | s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP); |
62 | s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2)); |
63 | } |
64 | } |
65 | |
66 | void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) |
67 | { |
68 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
69 | |
70 | /* Set all the necessary GPG2[0:1] pins to special-function 2 */ |
71 | s3c_gpio_cfgrange_nopull(S5PV210_GPG2(0), 2, S3C_GPIO_SFN(2)); |
72 | |
73 | switch (width) { |
74 | case 8: |
75 | /* Data pin GPG3[3:6] to special-function 3 */ |
76 | s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(3)); |
77 | case 4: |
78 | /* Data pin GPG2[3:6] to special-function 2 */ |
79 | s3c_gpio_cfgrange_nopull(S5PV210_GPG2(3), 4, S3C_GPIO_SFN(2)); |
80 | default: |
81 | break; |
82 | } |
83 | |
84 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
85 | s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP); |
86 | s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2)); |
87 | } |
88 | } |
89 | |
90 | void s5pv210_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width) |
91 | { |
92 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
93 | |
94 | /* Set all the necessary GPG3[0:1] pins to special-function 2 */ |
95 | s3c_gpio_cfgrange_nopull(S5PV210_GPG3(0), 2, S3C_GPIO_SFN(2)); |
96 | |
97 | /* Data pin GPG3[3:6] to special-function 2 */ |
98 | s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(2)); |
99 | |
100 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
101 | s3c_gpio_setpull(S5PV210_GPG3(2), S3C_GPIO_PULL_UP); |
102 | s3c_gpio_cfgpin(S5PV210_GPG3(2), S3C_GPIO_SFN(2)); |
103 | } |
104 | } |
105 |
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