LXR linux/include/linux/platform

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * MMC definitions for OMAP2
   4 *
   5 * Copyright (C) 2006 Nokia Corporation
   6 */
   7
   8#define OMAP_MMC_MAX_SLOTS      2
   9
  10struct mmc_card;
  11
  12struct omap_mmc_platform_data {
  13        /* back-link to device */
  14        struct device *dev;
  15
  16        /* number of slots per controller */
  17        unsigned nr_slots:2;
  18
  19        /* set if your board has components or wiring that limits the
  20         * maximum frequency on the MMC bus */
  21        unsigned int max_freq;
  22
  23        /* switch the bus to a new slot */
  24        int (*switch_slot)(struct device *dev, int slot);
  25        /* initialize board-specific MMC functionality, can be NULL if
  26         * not supported */
  27        int (*init)(struct device *dev);
  28        void (*cleanup)(struct device *dev);
  29        void (*shutdown)(struct device *dev);
  30
  31        /* Return context loss count due to PM states changing */
  32        int (*get_context_loss_count)(struct device *dev);
  33
  34        /* Integrating attributes from the omap_hwmod layer */
  35        u8 controller_flags;
  36
  37        /* Register offset deviation */
  38        u16 reg_offset;
  39
  40        struct omap_mmc_slot_data {
  41
  42                /*
  43                 * 4/8 wires and any additional host capabilities
  44                 * need to OR'd all capabilities (ref. linux/mmc/host.h)
  45                 */
  46                u8  wires;      /* Used for the MMC driver on omap1 and 2420 */
  47                u32 caps;       /* Used for the MMC driver on 2430 and later */
  48                u32 pm_caps;    /* PM capabilities of the mmc */
  49
  50                /*
  51                 * nomux means "standard" muxing is wrong on this board, and
  52                 * that board-specific code handled it before common init logic.
  53                 */
  54                unsigned nomux:1;
  55
  56                /* switch pin can be for card detect (default) or card cover */
  57                unsigned cover:1;
  58
  59                /* use the internal clock */
  60                unsigned internal_clock:1;
  61
  62                /* nonremovable e.g. eMMC */
  63                unsigned nonremovable:1;
  64
  65                /* Try to sleep or power off when possible */
  66                unsigned power_saving:1;
  67
  68                /* If using power_saving and the MMC power is not to go off */
  69                unsigned no_off:1;
  70
  71                /* eMMC does not handle power off when not in sleep state */
  72                unsigned no_regulator_off_init:1;
  73
  74                /* Regulator off remapped to sleep */
  75                unsigned vcc_aux_disable_is_sleep:1;
  76
  77                /* we can put the features above into this variable */
  78#define MMC_OMAP7XX             (1 << 3)
  79#define MMC_OMAP15XX            (1 << 4)
  80#define MMC_OMAP16XX            (1 << 5)
  81                unsigned features;
  82
  83                int switch_pin;                 /* gpio (card detect) */
  84                int gpio_wp;                    /* gpio (write protect) */
  85
  86                int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
  87                int (*set_power)(struct device *dev, int slot,
  88                                 int power_on, int vdd);
  89                int (*get_ro)(struct device *dev, int slot);
  90                void (*remux)(struct device *dev, int slot, int power_on);
  91                /* Call back before enabling / disabling regulators */
  92                void (*before_set_reg)(struct device *dev, int slot,
  93                                       int power_on, int vdd);
  94                /* Call back after enabling / disabling regulators */
  95                void (*after_set_reg)(struct device *dev, int slot,
  96                                      int power_on, int vdd);
  97                /* if we have special card, init it using this callback */
  98                void (*init_card)(struct mmc_card *card);
  99
 100                /* return MMC cover switch state, can be NULL if not supported.
 101                 *
 102                 * possible return values:
 103                 *   0 - closed
 104                 *   1 - open
 105                 */
 106                int (*get_cover_state)(struct device *dev, int slot);
 107
 108                const char *name;
 109                u32 ocr_mask;
 110
 111                /* Card detection IRQs */
 112                int card_detect_irq;
 113                int (*card_detect)(struct device *dev, int slot);
 114
 115                unsigned int ban_openended:1;
 116
 117        } slots[OMAP_MMC_MAX_SLOTS];
 118};
 119