LXR linux/include/linux/platform

   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
  13struct mmc_card;
  14
  15struct 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};
 126