arch/arm/plat-omap/include/plat/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 <plat/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 OMAP2420_MMC_SIZE       OMAP1_MMC_SIZE
  28 #define OMAP2_MMC1_BASE         0x4809c000
  29
  30 #define OMAP4_MMC_REG_OFFSET    0x100
  31
  32 #define OMAP_MMC_MAX_SLOTS      2
  33
  34 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT   BIT(1)
  35
  36 struct omap_mmc_dev_attr {
  37         u8 flags;
  38 };
  39
  40 struct omap_mmc_platform_data {
  41         /* back-link to device */
  42         struct device *dev;
  43
  44         /* number of slots per controller */
  45         unsigned nr_slots:2;
  46
  47         /* set if your board has components or wiring that limits the
  48          * maximum frequency on the MMC bus */
  49         unsigned int max_freq;
  50
  51         /* switch the bus to a new slot */
  52         int (*switch_slot)(struct device *dev, int slot);
  53         /* initialize board-specific MMC functionality, can be NULL if
  54          * not supported */
  55         int (*init)(struct device *dev);
  56         void (*cleanup)(struct device *dev);
  57         void (*shutdown)(struct device *dev);
  58
  59         /* To handle board related suspend/resume functionality for MMC */
  60         int (*suspend)(struct device *dev, int slot);
  61         int (*resume)(struct device *dev, int slot);
  62
  63         /* Return context loss count due to PM states changing */
  64         int (*get_context_loss_count)(struct device *dev);
  65
  66         u64 dma_mask;
  67
  68         /* Integrating attributes from the omap_hwmod layer */
  69         u8 controller_flags;
  70
  71         /* Register offset deviation */
  72         u16 reg_offset;
  73
  74         struct omap_mmc_slot_data {
  75
  76                 /*
  77                  * 4/8 wires and any additional host capabilities
  78                  * need to OR'd all capabilities (ref. linux/mmc/host.h)
  79                  */
  80                 u8  wires;      /* Used for the MMC driver on omap1 and 2420 */
  81                 u32 caps;       /* Used for the MMC driver on 2430 and later */
  82
  83                 /*
  84                  * nomux means "standard" muxing is wrong on this board, and
  85                  * that board-specific code handled it before common init logic.
  86                  */
  87                 unsigned nomux:1;
  88
  89                 /* switch pin can be for card detect (default) or card cover */
  90                 unsigned cover:1;
  91
  92                 /* use the internal clock */
  93                 unsigned internal_clock:1;
  94
  95                 /* nonremovable e.g. eMMC */
  96                 unsigned nonremovable:1;
  97
  98                 /* Try to sleep or power off when possible */
  99                 unsigned power_saving:1;
 100
 101                 /* If using power_saving and the MMC power is not to go off */
 102                 unsigned no_off:1;
 103
 104                 /* eMMC does not handle power off when not in sleep state */
 105                 unsigned no_regulator_off_init:1;
 106
 107                 /* Regulator off remapped to sleep */
 108                 unsigned vcc_aux_disable_is_sleep:1;
 109
 110                 /* we can put the features above into this variable */
 111 #define HSMMC_HAS_PBIAS         (1 << 0)
 112 #define HSMMC_HAS_UPDATED_RESET (1 << 1)
 113                 unsigned features;
 114
 115                 int switch_pin;                 /* gpio (card detect) */
 116                 int gpio_wp;                    /* gpio (write protect) */
 117
 118                 int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
 119                 int (*set_power)(struct device *dev, int slot,
 120                                  int power_on, int vdd);
 121                 int (*get_ro)(struct device *dev, int slot);
 122                 int (*set_sleep)(struct device *dev, int slot, int sleep,
 123                                  int vdd, int cardsleep);
 124                 void (*remux)(struct device *dev, int slot, int power_on);
 125                 /* Call back before enabling / disabling regulators */
 126                 void (*before_set_reg)(struct device *dev, int slot,
 127                                        int power_on, int vdd);
 128                 /* Call back after enabling / disabling regulators */
 129                 void (*after_set_reg)(struct device *dev, int slot,
 130                                       int power_on, int vdd);
 131                 /* if we have special card, init it using this callback */
 132                 void (*init_card)(struct mmc_card *card);
 133
 134                 /* return MMC cover switch state, can be NULL if not supported.
 135                  *
 136                  * possible return values:
 137                  *   0 - closed
 138                  *   1 - open
 139                  */
 140                 int (*get_cover_state)(struct device *dev, int slot);
 141
 142                 const char *name;
 143                 u32 ocr_mask;
 144
 145                 /* Card detection IRQs */
 146                 int card_detect_irq;
 147                 int (*card_detect)(struct device *dev, int slot);
 148
 149                 unsigned int ban_openended:1;
 150
 151         } slots[OMAP_MMC_MAX_SLOTS];
 152 };
 153
 154 /* called from board-specific card detection service routine */
 155 extern void omap_mmc_notify_cover_event(struct device *dev, int slot,
 156                                         int is_closed);
 157
 158 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 159         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 160 void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 161                                 int nr_controllers);
 162 void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data);
 163 int omap_mmc_add(const char *name, int id, unsigned long base,
 164                                 unsigned long size, unsigned int irq,
 165                                 struct omap_mmc_platform_data *data);
 166 #else
 167 static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 168                                 int nr_controllers)
 169 {
 170 }
 171 static inline void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
 172 {
 173 }
 174 static inline int omap_mmc_add(const char *name, int id, unsigned long base,
 175                                 unsigned long size, unsigned int irq,
 176                                 struct omap_mmc_platform_data *data)
 177 {
 178         return 0;
 179 }
 180
 181 #endif
 182 #endif