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 */
11 #ifndef __OMAP2_MMC_H
12 #define __OMAP2_MMC_H
14 #include <linux/types.h>
15 #include <linux/device.h>
16 #include <linux/mmc/host.h>
18 #include <plat/board.h>
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 */
26 #define OMAP24XX_NR_MMC 2
27 #define OMAP2420_MMC_SIZE OMAP1_MMC_SIZE
28 #define OMAP2_MMC1_BASE 0x4809c000
30 #define OMAP4_MMC_REG_OFFSET 0x100
32 #define OMAP_MMC_MAX_SLOTS 2
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)
53 enum {
54 MMC_CTRL_VERSION_1 = 0, /* OMAP class devicess */
55 MMC_CTRL_VERSION_2 /* AM33XX class devices */
56 };
58 struct omap_mmc_dev_attr {
59 u8 flags;
60 };
62 struct omap_mmc_platform_data {
63 /* back-link to device */
64 struct device *dev;
66 /* number of slots per controller */
67 unsigned nr_slots:2;
69 /* set if your board has components or wiring that limits the
70 * maximum frequency on the MMC bus */
71 unsigned int max_freq;
73 /* switch the bus to a new slot */
74 int (*switch_slot)(struct device *dev, int slot);
75 /* initialize board-specific MMC functionality, can be NULL if
76 * not supported */
77 int (*init)(struct device *dev);
78 void (*cleanup)(struct device *dev);
79 void (*shutdown)(struct device *dev);
81 /* To handle board related suspend/resume functionality for MMC */
82 int (*suspend)(struct device *dev, int slot);
83 int (*resume)(struct device *dev, int slot);
85 /* Return context loss count due to PM states changing */
86 int (*get_context_loss_count)(struct device *dev);
88 u64 dma_mask;
90 /* Integrating attributes from the omap_hwmod layer */
91 u8 controller_flags;
93 /* Register offset deviation */
94 u16 reg_offset;
96 struct omap_mmc_slot_data {
98 /*
99 * 4/8 wires and any additional host capabilities
100 * need to OR'd all capabilities (ref. linux/mmc/host.h)
101 */
102 u8 wires; /* Used for the MMC driver on omap1 and 2420 */
103 u32 caps; /* Used for the MMC driver on 2430 and later */
104 u32 pm_caps; /* PM capabilities of the mmc */
106 /*
107 * nomux means "standard" muxing is wrong on this board, and
108 * that board-specific code handled it before common init logic.
109 */
110 unsigned nomux:1;
112 /* switch pin can be for card detect (default) or card cover */
113 unsigned cover:1;
115 /* use the internal clock */
116 unsigned internal_clock:1;
118 /* nonremovable e.g. eMMC */
119 unsigned nonremovable:1;
121 /* Try to sleep or power off when possible */
122 unsigned power_saving:1;
124 /* If using power_saving and the MMC power is not to go off */
125 unsigned no_off:1;
127 /* eMMC does not handle power off when not in sleep state */
128 unsigned no_regulator_off_init:1;
130 /* Regulator off remapped to sleep */
131 unsigned vcc_aux_disable_is_sleep:1;
133 /* we can put the features above into this variable */
134 #define HSMMC_HAS_PBIAS (1 << 0)
135 #define HSMMC_HAS_UPDATED_RESET (1 << 1)
136 unsigned features;
138 int switch_pin; /* gpio (card detect) */
139 int gpio_wp; /* gpio (write protect) */
141 int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
142 int (*set_power)(struct device *dev, int slot,
143 int power_on, int vdd);
144 int (*get_ro)(struct device *dev, int slot);
145 int (*set_sleep)(struct device *dev, int slot, int sleep,
146 int vdd, int cardsleep);
147 void (*remux)(struct device *dev, int slot, int power_on);
148 /* Call back before enabling / disabling regulators */
149 void (*before_set_reg)(struct device *dev, int slot,
150 int power_on, int vdd);
151 /* Call back after enabling / disabling regulators */
152 void (*after_set_reg)(struct device *dev, int slot,
153 int power_on, int vdd);
154 /* if we have special card, init it using this callback */
155 void (*init_card)(struct mmc_card *card);
157 /* return MMC cover switch state, can be NULL if not supported.
158 *
159 * possible return values:
160 * 0 - closed
161 * 1 - open
162 */
163 int (*get_cover_state)(struct device *dev, int slot);
165 const char *name;
166 u32 ocr_mask;
168 /* Card detection IRQs */
169 int card_detect_irq;
170 int (*card_detect)(struct device *dev, int slot);
172 unsigned int ban_openended:1;
174 } slots[OMAP_MMC_MAX_SLOTS];
176 u8 version;
177 };
179 /* called from board-specific card detection service routine */
180 extern void omap_mmc_notify_cover_event(struct device *dev, int slot,
181 int is_closed);
183 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
184 defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
185 void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
186 int nr_controllers);
187 void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data);
188 int omap_mmc_add(const char *name, int id, unsigned long base,
189 unsigned long size, unsigned int irq,
190 struct omap_mmc_platform_data *data);
191 #else
192 static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
193 int nr_controllers)
194 {
195 }
196 static inline void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
197 {
198 }
199 static inline int omap_mmc_add(const char *name, int id, unsigned long base,
200 unsigned long size, unsigned int irq,
201 struct omap_mmc_platform_data *data)
202 {
203 return 0;
204 }
206 #endif
207 #endif