arch/arm/plat-omap/include/mach/mmc.h

   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 <mach/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 OMAP34XX_NR_MMC         3
  28 #define OMAP44XX_NR_MMC         5
  29 #define OMAP2420_MMC_SIZE       OMAP1_MMC_SIZE
  30 #define OMAP3_HSMMC_SIZE        0x200
  31 #define OMAP4_HSMMC_SIZE        0x1000
  32 #define OMAP2_MMC1_BASE         0x4809c000
  33 #define OMAP2_MMC2_BASE         0x480b4000
  34 #define OMAP3_MMC3_BASE         0x480ad000
  35 #define OMAP4_MMC4_BASE         0x480d1000
  36 #define OMAP4_MMC5_BASE         0x480d5000
  37 #define OMAP4_MMC_REG_OFFSET    0x100
  38 #define HSMMC5                  (1 << 4)
  39 #define HSMMC4                  (1 << 3)
  40 #define HSMMC3                  (1 << 2)
  41 #define HSMMC2                  (1 << 1)
  42 #define HSMMC1                  (1 << 0)
  43
  44 #define OMAP_MMC_MAX_SLOTS      2
  45
  46 struct omap_mmc_platform_data {
  47         /* back-link to device */
  48         struct device *dev;
  49
  50         /* number of slots per controller */
  51         unsigned nr_slots:2;
  52
  53         /* set if your board has components or wiring that limits the
  54          * maximum frequency on the MMC bus */
  55         unsigned int max_freq;
  56
  57         /* switch the bus to a new slot */
  58         int (* switch_slot)(struct device *dev, int slot);
  59         /* initialize board-specific MMC functionality, can be NULL if
  60          * not supported */
  61         int (* init)(struct device *dev);
  62         void (* cleanup)(struct device *dev);
  63         void (* shutdown)(struct device *dev);
  64
  65         /* To handle board related suspend/resume functionality for MMC */
  66         int (*suspend)(struct device *dev, int slot);
  67         int (*resume)(struct device *dev, int slot);
  68
  69         /* Return context loss count due to PM states changing */
  70         int (*get_context_loss_count)(struct device *dev);
  71
  72         u64 dma_mask;
  73
  74         struct omap_mmc_slot_data {
  75
  76                 /* 4 wire signaling is optional, and is used for SD/SDIO/HSMMC;
  77                  * 8 wire signaling is also optional, and is used with HSMMC
  78                  */
  79                 u8 wires;
  80
  81                 /*
  82                  * nomux means "standard" muxing is wrong on this board, and
  83                  * that board-specific code handled it before common init logic.
  84                  */
  85                 unsigned nomux:1;
  86
  87                 /* switch pin can be for card detect (default) or card cover */
  88                 unsigned cover:1;
  89
  90                 /* use the internal clock */
  91                 unsigned internal_clock:1;
  92
  93                 /* nonremovable e.g. eMMC */
  94                 unsigned nonremovable:1;
  95
  96                 /* Try to sleep or power off when possible */
  97                 unsigned power_saving:1;
  98
  99                 int switch_pin;                 /* gpio (card detect) */
 100                 int gpio_wp;                    /* gpio (write protect) */
 101
 102                 int (* set_bus_mode)(struct device *dev, int slot, int bus_mode);
 103                 int (* set_power)(struct device *dev, int slot, int power_on, int vdd);
 104                 int (* get_ro)(struct device *dev, int slot);
 105                 int (*set_sleep)(struct device *dev, int slot, int sleep,
 106                                  int vdd, int cardsleep);
 107
 108                 /* return MMC cover switch state, can be NULL if not supported.
 109                  *
 110                  * possible return values:
 111                  *   0 - closed
 112                  *   1 - open
 113                  */
 114                 int (* get_cover_state)(struct device *dev, int slot);
 115
 116                 const char *name;
 117                 u32 ocr_mask;
 118
 119                 /* Card detection IRQs */
 120                 int card_detect_irq;
 121                 int (* card_detect)(int irq);
 122
 123                 unsigned int ban_openended:1;
 124
 125         } slots[OMAP_MMC_MAX_SLOTS];
 126 };
 127
 128 /* called from board-specific card detection service routine */
 129 extern void omap_mmc_notify_cover_event(struct device *dev, int slot, int is_closed);
 130
 131 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 132         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 133 void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 134                                 int nr_controllers);
 135 void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
 136                                 int nr_controllers);
 137 int omap_mmc_add(const char *name, int id, unsigned long base,
 138                                 unsigned long size, unsigned int irq,
 139                                 struct omap_mmc_platform_data *data);
 140 #else
 141 static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 142                                 int nr_controllers)
 143 {
 144 }
 145 static inline void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
 146                                 int nr_controllers)
 147 {
 148 }
 149 static inline int omap_mmc_add(const char *name, int id, unsigned long base,
 150                                 unsigned long size, unsigned int irq,
 151                                 struct omap_mmc_platform_data *data)
 152 {
 153         return 0;
 154 }
 155
 156 #endif
 157 #endif