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 OMAP34XX_NR_MMC         3
  28 #define OMAP44XX_NR_MMC         5
  29 #define OMAP2420_MMC_SIZE       OMAP1_MMC_SIZE
  30 #define OMAP3_HSMMC_SIZE        0x200
  31 #define OMAP4_HSMMC_SIZE        0x1000
  32 #define OMAP2_MMC1_BASE         0x4809c000
  33 #define OMAP2_MMC2_BASE         0x480b4000
  34 #define OMAP3_MMC3_BASE         0x480ad000
  35 #define OMAP4_MMC4_BASE         0x480d1000
  36 #define OMAP4_MMC5_BASE         0x480d5000
  37 #define OMAP4_MMC_REG_OFFSET    0x100
  38 #define HSMMC5                  (1 << 4)
  39 #define HSMMC4                  (1 << 3)
  40 #define HSMMC3                  (1 << 2)
  41 #define HSMMC2                  (1 << 1)
  42 #define HSMMC1                  (1 << 0)
  43
  44 #define OMAP_MMC_MAX_SLOTS      2
  45
  46 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT   BIT(1)
  47
  48 struct omap_mmc_dev_attr {
  49         u8 flags;
  50 };
  51
  52 struct omap_mmc_platform_data {
  53         /* back-link to device */
  54         struct device *dev;
  55
  56         /* number of slots per controller */
  57         unsigned nr_slots:2;
  58
  59         /* set if your board has components or wiring that limits the
  60          * maximum frequency on the MMC bus */
  61         unsigned int max_freq;
  62
  63         /* switch the bus to a new slot */
  64         int (*switch_slot)(struct device *dev, int slot);
  65         /* initialize board-specific MMC functionality, can be NULL if
  66          * not supported */
  67         int (*init)(struct device *dev);
  68         void (*cleanup)(struct device *dev);
  69         void (*shutdown)(struct device *dev);
  70
  71         /* To handle board related suspend/resume functionality for MMC */
  72         int (*suspend)(struct device *dev, int slot);
  73         int (*resume)(struct device *dev, int slot);
  74
  75         /* Return context loss count due to PM states changing */
  76         int (*get_context_loss_count)(struct device *dev);
  77
  78         u64 dma_mask;
  79
  80         /* Integrating attributes from the omap_hwmod layer */
  81         u8 controller_flags;
  82
  83         /* Register offset deviation */
  84         u16 reg_offset;
  85
  86         struct omap_mmc_slot_data {
  87
  88                 /*
  89                  * 4/8 wires and any additional host capabilities
  90                  * need to OR'd all capabilities (ref. linux/mmc/host.h)
  91                  */
  92                 u8  wires;      /* Used for the MMC driver on omap1 and 2420 */
  93                 u32 caps;       /* Used for the MMC driver on 2430 and later */
  94
  95                 /*
  96                  * nomux means "standard" muxing is wrong on this board, and
  97                  * that board-specific code handled it before common init logic.
  98                  */
  99                 unsigned nomux:1;
 100
 101                 /* switch pin can be for card detect (default) or card cover */
 102                 unsigned cover:1;
 103
 104                 /* use the internal clock */
 105                 unsigned internal_clock:1;
 106
 107                 /* nonremovable e.g. eMMC */
 108                 unsigned nonremovable:1;
 109
 110                 /* Try to sleep or power off when possible */
 111                 unsigned power_saving:1;
 112
 113                 /* If using power_saving and the MMC power is not to go off */
 114                 unsigned no_off:1;
 115
 116                 /* Regulator off remapped to sleep */
 117                 unsigned vcc_aux_disable_is_sleep:1;
 118
 119                 /* we can put the features above into this variable */
 120 #define HSMMC_HAS_PBIAS         (1 << 0)
 121 #define HSMMC_HAS_UPDATED_RESET (1 << 1)
 122                 unsigned features;
 123
 124                 int switch_pin;                 /* gpio (card detect) */
 125                 int gpio_wp;                    /* gpio (write protect) */
 126
 127                 int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
 128                 int (*set_power)(struct device *dev, int slot,
 129                                  int power_on, int vdd);
 130                 int (*get_ro)(struct device *dev, int slot);
 131                 int (*set_sleep)(struct device *dev, int slot, int sleep,
 132                                  int vdd, int cardsleep);
 133                 void (*remux)(struct device *dev, int slot, int power_on);
 134                 /* Call back before enabling / disabling regulators */
 135                 void (*before_set_reg)(struct device *dev, int slot,
 136                                        int power_on, int vdd);
 137                 /* Call back after enabling / disabling regulators */
 138                 void (*after_set_reg)(struct device *dev, int slot,
 139                                       int power_on, int vdd);
 140                 /* if we have special card, init it using this callback */
 141                 void (*init_card)(struct mmc_card *card);
 142
 143                 /* return MMC cover switch state, can be NULL if not supported.
 144                  *
 145                  * possible return values:
 146                  *   0 - closed
 147                  *   1 - open
 148                  */
 149                 int (*get_cover_state)(struct device *dev, int slot);
 150
 151                 const char *name;
 152                 u32 ocr_mask;
 153
 154                 /* Card detection IRQs */
 155                 int card_detect_irq;
 156                 int (*card_detect)(struct device *dev, int slot);
 157
 158                 unsigned int ban_openended:1;
 159
 160         } slots[OMAP_MMC_MAX_SLOTS];
 161 };
 162
 163 /* called from board-specific card detection service routine */
 164 extern void omap_mmc_notify_cover_event(struct device *dev, int slot,
 165                                         int is_closed);
 166
 167 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 168         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 169 void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 170                                 int nr_controllers);
 171 void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data);
 172 void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
 173                                 int nr_controllers);
 174 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 #else
 178 static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 179                                 int nr_controllers)
 180 {
 181 }
 182 static inline void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
 183 {
 184 }
 185 static inline void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
 186                                 int nr_controllers)
 187 {
 188 }
 189 static inline int omap_mmc_add(const char *name, int id, unsigned long base,
 190                                 unsigned long size, unsigned int irq,
 191                                 struct omap_mmc_platform_data *data)
 192 {
 193         return 0;
 194 }
 195
 196 #endif
 197 #endif