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