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
10 struct mmc_card;
11
12 struct 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 };