mmc-omap.h

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