152 lines
4.6 KiB
C
152 lines
4.6 KiB
C
/*
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* MMC definitions for OMAP2
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*
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* Copyright (C) 2006 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define OMAP_MMC_MAX_SLOTS 2
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/*
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* struct omap_mmc_dev_attr.flags possibilities
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*
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* OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
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* operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
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* should be set if this is the case. See for example Section 22.5.3
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* "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
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* Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
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*
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* OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
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* don't work correctly on some MMC controller instances on some
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* OMAP3 SoCs; this flag should be set if this is the case. See
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* for example Advisory 2.1.1.128 "MMC: Multiple Block Read
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* Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
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* Revision F (October 2010) (SPRZ278F).
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*/
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#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0)
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#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ BIT(1)
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struct mmc_card;
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struct omap_mmc_dev_attr {
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u8 flags;
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};
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struct omap_mmc_platform_data {
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/* back-link to device */
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struct device *dev;
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/* number of slots per controller */
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unsigned nr_slots:2;
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/* set if your board has components or wiring that limits the
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* maximum frequency on the MMC bus */
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unsigned int max_freq;
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/* switch the bus to a new slot */
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int (*switch_slot)(struct device *dev, int slot);
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/* initialize board-specific MMC functionality, can be NULL if
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* not supported */
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int (*init)(struct device *dev);
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void (*cleanup)(struct device *dev);
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void (*shutdown)(struct device *dev);
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/* To handle board related suspend/resume functionality for MMC */
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int (*suspend)(struct device *dev, int slot);
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int (*resume)(struct device *dev, int slot);
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/* Return context loss count due to PM states changing */
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int (*get_context_loss_count)(struct device *dev);
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/* Integrating attributes from the omap_hwmod layer */
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u8 controller_flags;
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/* Register offset deviation */
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u16 reg_offset;
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struct omap_mmc_slot_data {
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/*
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* 4/8 wires and any additional host capabilities
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* need to OR'd all capabilities (ref. linux/mmc/host.h)
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*/
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u8 wires; /* Used for the MMC driver on omap1 and 2420 */
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u32 caps; /* Used for the MMC driver on 2430 and later */
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u32 pm_caps; /* PM capabilities of the mmc */
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/*
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* nomux means "standard" muxing is wrong on this board, and
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* that board-specific code handled it before common init logic.
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*/
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unsigned nomux:1;
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/* switch pin can be for card detect (default) or card cover */
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unsigned cover:1;
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/* use the internal clock */
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unsigned internal_clock:1;
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/* nonremovable e.g. eMMC */
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unsigned nonremovable:1;
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/* Try to sleep or power off when possible */
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unsigned power_saving:1;
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/* If using power_saving and the MMC power is not to go off */
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unsigned no_off:1;
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/* eMMC does not handle power off when not in sleep state */
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unsigned no_regulator_off_init:1;
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/* Regulator off remapped to sleep */
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unsigned vcc_aux_disable_is_sleep:1;
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/* we can put the features above into this variable */
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#define HSMMC_HAS_PBIAS (1 << 0)
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#define HSMMC_HAS_UPDATED_RESET (1 << 1)
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#define HSMMC_HAS_HSPE_SUPPORT (1 << 2)
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#define MMC_OMAP7XX (1 << 3)
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#define MMC_OMAP15XX (1 << 4)
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#define MMC_OMAP16XX (1 << 5)
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unsigned features;
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int switch_pin; /* gpio (card detect) */
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int gpio_wp; /* gpio (write protect) */
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int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
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int (*set_power)(struct device *dev, int slot,
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int power_on, int vdd);
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int (*get_ro)(struct device *dev, int slot);
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void (*remux)(struct device *dev, int slot, int power_on);
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/* Call back before enabling / disabling regulators */
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void (*before_set_reg)(struct device *dev, int slot,
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int power_on, int vdd);
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/* Call back after enabling / disabling regulators */
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void (*after_set_reg)(struct device *dev, int slot,
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int power_on, int vdd);
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/* if we have special card, init it using this callback */
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void (*init_card)(struct mmc_card *card);
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/* return MMC cover switch state, can be NULL if not supported.
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*
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* possible return values:
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* 0 - closed
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* 1 - open
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*/
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int (*get_cover_state)(struct device *dev, int slot);
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const char *name;
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u32 ocr_mask;
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/* Card detection IRQs */
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int card_detect_irq;
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int (*card_detect)(struct device *dev, int slot);
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unsigned int ban_openended:1;
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} slots[OMAP_MMC_MAX_SLOTS];
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};
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