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087c5030 CEA |
1 | /* |
2 | * linux/arch/arm/mach-omap1/board-sx1-mmc.c | |
3 | * | |
4 | * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT | |
5 | * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br> | |
6 | * | |
7 | * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is: | |
8 | * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
a09e64fb RK |
15 | #include <mach/hardware.h> |
16 | #include <mach/mmc.h> | |
17 | #include <mach/gpio.h> | |
087c5030 CEA |
18 | |
19 | #ifdef CONFIG_MMC_OMAP | |
20 | static int slot_cover_open; | |
21 | static struct device *mmc_device; | |
22 | ||
23 | static int sx1_mmc_set_power(struct device *dev, int slot, int power_on, | |
24 | int vdd) | |
25 | { | |
26 | int err; | |
27 | u8 dat = 0; | |
28 | ||
29 | #ifdef CONFIG_MMC_DEBUG | |
30 | dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1, | |
31 | power_on ? "on" : "off", vdd); | |
32 | #endif | |
33 | ||
34 | if (slot != 0) { | |
35 | dev_err(dev, "No such slot %d\n", slot + 1); | |
36 | return -ENODEV; | |
37 | } | |
38 | ||
39 | err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat); | |
40 | if (err < 0) | |
41 | return err; | |
42 | ||
43 | if (power_on) | |
44 | dat |= SOFIA_MMC_POWER; | |
45 | else | |
46 | dat &= ~SOFIA_MMC_POWER; | |
47 | ||
48 | return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat); | |
49 | } | |
50 | ||
51 | static int sx1_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) | |
52 | { | |
53 | #ifdef CONFIG_MMC_DEBUG | |
54 | dev_dbg(dev, "Set slot %d bus_mode %s\n", slot + 1, | |
55 | bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull"); | |
56 | #endif | |
57 | if (slot != 0) { | |
58 | dev_err(dev, "No such slot %d\n", slot + 1); | |
59 | return -ENODEV; | |
60 | } | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | static int sx1_mmc_get_cover_state(struct device *dev, int slot) | |
66 | { | |
67 | BUG_ON(slot != 0); | |
68 | ||
69 | return slot_cover_open; | |
70 | } | |
71 | ||
72 | void sx1_mmc_slot_cover_handler(void *arg, int state) | |
73 | { | |
74 | if (mmc_device == NULL) | |
75 | return; | |
76 | ||
77 | slot_cover_open = state; | |
78 | omap_mmc_notify_cover_event(mmc_device, 0, state); | |
79 | } | |
80 | ||
81 | static int sx1_mmc_late_init(struct device *dev) | |
82 | { | |
83 | int ret = 0; | |
84 | ||
85 | mmc_device = dev; | |
86 | ||
87 | return ret; | |
88 | } | |
89 | ||
90 | static void sx1_mmc_cleanup(struct device *dev) | |
91 | { | |
92 | } | |
93 | ||
94 | static struct omap_mmc_platform_data sx1_mmc_data = { | |
95 | .nr_slots = 1, | |
96 | .switch_slot = NULL, | |
97 | .init = sx1_mmc_late_init, | |
98 | .cleanup = sx1_mmc_cleanup, | |
99 | .slots[0] = { | |
100 | .set_power = sx1_mmc_set_power, | |
101 | .set_bus_mode = sx1_mmc_set_bus_mode, | |
102 | .get_ro = NULL, | |
103 | .get_cover_state = sx1_mmc_get_cover_state, | |
104 | .ocr_mask = MMC_VDD_28_29 | MMC_VDD_30_31 | | |
105 | MMC_VDD_32_33 | MMC_VDD_33_34, | |
106 | .name = "mmcblk", | |
107 | }, | |
108 | }; | |
109 | ||
110 | void __init sx1_mmc_init(void) | |
111 | { | |
112 | omap_set_mmc_info(1, &sx1_mmc_data); | |
113 | } | |
114 | ||
115 | #else | |
116 | ||
117 | void __init sx1_mmc_init(void) | |
118 | { | |
119 | } | |
120 | ||
121 | void sx1_mmc_slot_cover_handler(void *arg, int state) | |
122 | { | |
123 | } | |
124 | #endif |