1 /*
2 * MMC definitions for OMAP2
3 *
4 * Copyright (C) 2006 Nokia Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #ifndef __OMAP2_MMC_H
12 #define __OMAP2_MMC_H
13
14 #include <linux/types.h>
15 #include <linux/device.h>
16 #include <linux/mmc/host.h>
17
18 #include <plat/board.h>
19
20 #define OMAP15XX_NR_MMC 1
21 #define OMAP16XX_NR_MMC 2
22 #define OMAP1_MMC_SIZE 0x080
23 #define OMAP1_MMC1_BASE 0xfffb7800
24 #define OMAP1_MMC2_BASE 0xfffb7c00 /* omap16xx only */
25
26 #define OMAP24XX_NR_MMC 2
27 #define OMAP2420_MMC_SIZE OMAP1_MMC_SIZE
28 #define OMAP2_MMC1_BASE 0x4809c000
29
30 #define OMAP4_MMC_REG_OFFSET 0x100
31
32 #define OMAP_MMC_MAX_SLOTS 2
33
34 /*
35 * struct omap_mmc_dev_attr.flags possibilities
36 *
37 * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
38 * operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
39 * should be set if this is the case. See for example Section 22.5.3
40 * "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
41 * Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
42 *
43 * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
44 * don't work correctly on some MMC controller instances on some
45 * OMAP3 SoCs; this flag should be set if this is the case. See
46 * for example Advisory 2.1.1.128 "MMC: Multiple Block Read
47 * Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
48 * Revision F (October 2010) (SPRZ278F).
49 */
50 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0)
51 #define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ BIT(1)
52
53 struct omap_mmc_dev_attr {
54 u8 flags;
55 };
56
57 struct omap_mmc_platform_data {
58 /* back-link to device */
59 struct device *dev;
60
61 /* number of slots per controller */
62 unsigned nr_slots:2;
63
64 /* set if your board has components or wiring that limits the
65 * maximum frequency on the MMC bus */
66 unsigned int max_freq;
67
68 /* switch the bus to a new slot */
69 int (*switch_slot)(struct device *dev, int slot);
70 /* initialize board-specific MMC functionality, can be NULL if
71 * not supported */
72 int (*init)(struct device *dev);
73 void (*cleanup)(struct device *dev);
74 void (*shutdown)(struct device *dev);
75
76 /* To handle board related suspend/resume functionality for MMC */
77 int (*suspend)(struct device *dev, int slot);
78 int (*resume)(struct device *dev, int slot);
79
80 /* Return context loss count due to PM states changing */
81 int (*get_context_loss_count)(struct device *dev);
82
83 u64 dma_mask;
84
85 /* Integrating attributes from the omap_hwmod layer */
86 u8 controller_flags;
87
88 /* Register offset deviation */
89 u16 reg_offset;
90
91 struct omap_mmc_slot_data {
92
93 /*
94 * 4/8 wires and any additional host capabilities
95 * need to OR'd all capabilities (ref. linux/mmc/host.h)
96 */
97 u8 wires; /* Used for the MMC driver on omap1 and 2420 */
98 u32 caps; /* Used for the MMC driver on 2430 and later */
99 u32 pm_caps; /* PM capabilities of the mmc */
100
101 /*
102 * nomux means "standard" muxing is wrong on this board, and
103 * that board-specific code handled it before common init logic.
104 */
105 unsigned nomux:1;
106
107 /* switch pin can be for card detect (default) or card cover */
108 unsigned cover:1;
109
110 /* use the internal clock */
111 unsigned internal_clock:1;
112
113 /* nonremovable e.g. eMMC */
114 unsigned nonremovable:1;
115
116 /* Try to sleep or power off when possible */
117 unsigned power_saving:1;
118
119 /* If using power_saving and the MMC power is not to go off */
120 unsigned no_off:1;
121
122 /* eMMC does not handle power off when not in sleep state */
123 unsigned no_regulator_off_init:1;
124
125 /* Regulator off remapped to sleep */
126 unsigned vcc_aux_disable_is_sleep:1;
127
128 /* we can put the features above into this variable */
129 #define HSMMC_HAS_PBIAS (1 << 0)
130 #define HSMMC_HAS_UPDATED_RESET (1 << 1)
131 unsigned features;
132
133 int switch_pin; /* gpio (card detect) */
134 int gpio_wp; /* gpio (write protect) */
135
136 int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
137 int (*set_power)(struct device *dev, int slot,
138 int power_on, int vdd);
139 int (*get_ro)(struct device *dev, int slot);
140 void (*remux)(struct device *dev, int slot, int power_on);
141 /* Call back before enabling / disabling regulators */
142 void (*before_set_reg)(struct device *dev, int slot,
143 int power_on, int vdd);
144 /* Call back after enabling / disabling regulators */
145 void (*after_set_reg)(struct device *dev, int slot,
146 int power_on, int vdd);
147 /* if we have special card, init it using this callback */
148 void (*init_card)(struct mmc_card *card);
149
150 /* return MMC cover switch state, can be NULL if not supported.
151 *
152 * possible return values:
153 * 0 - closed
154 * 1 - open
155 */
156 int (*get_cover_state)(struct device *dev, int slot);
157
158 const char *name;
159 u32 ocr_mask;
160
161 /* Card detection IRQs */
162 int card_detect_irq;
163 int (*card_detect)(struct device *dev, int slot);
164
165 unsigned int ban_openended:1;
166
167 } slots[OMAP_MMC_MAX_SLOTS];
168 };
169
170 /* called from board-specific card detection service routine */
171 extern void omap_mmc_notify_cover_event(struct device *dev, int slot,
172 int is_closed);
173
174 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
175 defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
176 void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
177 int nr_controllers);
178 void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data);
179 int omap_mmc_add(const char *name, int id, unsigned long base,
180 unsigned long size, unsigned int irq,
181 struct omap_mmc_platform_data *data);
182 #else
omap1_init_mmc(struct omap_mmc_platform_data ** mmc_data,int nr_controllers)183 static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
184 int nr_controllers)
185 {
186 }
omap242x_init_mmc(struct omap_mmc_platform_data ** mmc_data)187 static inline void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
188 {
189 }
omap_mmc_add(const char * name,int id,unsigned long base,unsigned long size,unsigned int irq,struct omap_mmc_platform_data * data)190 static inline int omap_mmc_add(const char *name, int id, unsigned long base,
191 unsigned long size, unsigned int irq,
192 struct omap_mmc_platform_data *data)
193 {
194 return 0;
195 }
196
197 #endif
198 #endif
199