include/linux/platform_data/mmc-omap.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 #define OMAP_MMC_MAX_SLOTS      2
  12
  13 struct mmc_card;
  14
  15 struct omap_mmc_platform_data {
  16         /* back-link to device */
  17         struct device *dev;
  18
  19         /* number of slots per controller */
  20         unsigned nr_slots:2;
  21
  22         /* set if your board has components or wiring that limits the
  23          * maximum frequency on the MMC bus */
  24         unsigned int max_freq;
  25
  26         /* switch the bus to a new slot */
  27         int (*switch_slot)(struct device *dev, int slot);
  28         /* initialize board-specific MMC functionality, can be NULL if
  29          * not supported */
  30         int (*init)(struct device *dev);
  31         void (*cleanup)(struct device *dev);
  32         void (*shutdown)(struct device *dev);
  33
  34         /* To handle board related suspend/resume functionality for MMC */
  35         int (*suspend)(struct device *dev, int slot);
  36         int (*resume)(struct device *dev, int slot);
  37
  38         /* Return context loss count due to PM states changing */
  39         int (*get_context_loss_count)(struct device *dev);
  40
  41         /* Integrating attributes from the omap_hwmod layer */
  42         u8 controller_flags;
  43
  44         /* Register offset deviation */
  45         u16 reg_offset;
  46
  47         struct omap_mmc_slot_data {
  48
  49                 /*
  50                  * 4/8 wires and any additional host capabilities
  51                  * need to OR'd all capabilities (ref. linux/mmc/host.h)
  52                  */
  53                 u8  wires;      /* Used for the MMC driver on omap1 and 2420 */
  54                 u32 caps;       /* Used for the MMC driver on 2430 and later */
  55                 u32 pm_caps;    /* PM capabilities of the mmc */
  56
  57                 /*
  58                  * nomux means "standard" muxing is wrong on this board, and
  59                  * that board-specific code handled it before common init logic.
  60                  */
  61                 unsigned nomux:1;
  62
  63                 /* switch pin can be for card detect (default) or card cover */
  64                 unsigned cover:1;
  65
  66                 /* use the internal clock */
  67                 unsigned internal_clock:1;
  68
  69                 /* nonremovable e.g. eMMC */
  70                 unsigned nonremovable:1;
  71
  72                 /* Try to sleep or power off when possible */
  73                 unsigned power_saving:1;
  74
  75                 /* If using power_saving and the MMC power is not to go off */
  76                 unsigned no_off:1;
  77
  78                 /* eMMC does not handle power off when not in sleep state */
  79                 unsigned no_regulator_off_init:1;
  80
  81                 /* Regulator off remapped to sleep */
  82                 unsigned vcc_aux_disable_is_sleep:1;
  83
  84                 /* we can put the features above into this variable */
  85 #define MMC_OMAP7XX             (1 << 3)
  86 #define MMC_OMAP15XX            (1 << 4)
  87 #define MMC_OMAP16XX            (1 << 5)
  88                 unsigned features;
  89
  90                 int switch_pin;                 /* gpio (card detect) */
  91                 int gpio_wp;                    /* gpio (write protect) */
  92
  93                 int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
  94                 int (*set_power)(struct device *dev, int slot,
  95                                  int power_on, int vdd);
  96                 int (*get_ro)(struct device *dev, int slot);
  97                 void (*remux)(struct device *dev, int slot, int power_on);
  98                 /* Call back before enabling / disabling regulators */
  99                 void (*before_set_reg)(struct device *dev, int slot,
 100                                        int power_on, int vdd);
 101                 /* Call back after enabling / disabling regulators */
 102                 void (*after_set_reg)(struct device *dev, int slot,
 103                                       int power_on, int vdd);
 104                 /* if we have special card, init it using this callback */
 105                 void (*init_card)(struct mmc_card *card);
 106
 107                 /* return MMC cover switch state, can be NULL if not supported.
 108                  *
 109                  * possible return values:
 110                  *   0 - closed
 111                  *   1 - open
 112                  */
 113                 int (*get_cover_state)(struct device *dev, int slot);
 114
 115                 const char *name;
 116                 u32 ocr_mask;
 117
 118                 /* Card detection IRQs */
 119                 int card_detect_irq;
 120                 int (*card_detect)(struct device *dev, int slot);
 121
 122                 unsigned int ban_openended:1;
 123
 124         } slots[OMAP_MMC_MAX_SLOTS];
 125 };