1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * MMC definitions for OMAP2
4  *
5  * Copyright (C) 2006 Nokia Corporation
6  */
7 
8 /*
9  * struct omap_hsmmc_dev_attr.flags possibilities
10  *
11  * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
12  *    operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
13  *    should be set if this is the case.  See for example Section 22.5.3
14  *    "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
15  *    Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
16  *
17  * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
18  *    don't work correctly on some MMC controller instances on some
19  *    OMAP3 SoCs; this flag should be set if this is the case.  See
20  *    for example Advisory 2.1.1.128 "MMC: Multiple Block Read
21  *    Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
22  *    Revision F (October 2010) (SPRZ278F).
23  */
24 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT		BIT(0)
25 #define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ	BIT(1)
26 #define OMAP_HSMMC_SWAKEUP_MISSING		BIT(2)
27 
28 struct omap_hsmmc_dev_attr {
29 	u8 flags;
30 };
31 
32 struct mmc_card;
33 
34 struct omap_hsmmc_platform_data {
35 	/* back-link to device */
36 	struct device *dev;
37 
38 	/* set if your board has components or wiring that limits the
39 	 * maximum frequency on the MMC bus */
40 	unsigned int max_freq;
41 
42 	/* Integrating attributes from the omap_hwmod layer */
43 	u8 controller_flags;
44 
45 	/* Register offset deviation */
46 	u16 reg_offset;
47 
48 	/*
49 	 * 4/8 wires and any additional host capabilities
50 	 * need to OR'd all capabilities (ref. linux/mmc/host.h)
51 	 */
52 	u32 caps;	/* Used for the MMC driver on 2430 and later */
53 	u32 pm_caps;	/* PM capabilities of the mmc */
54 
55 	/* nonremovable e.g. eMMC */
56 	unsigned nonremovable:1;
57 
58 	/* eMMC does not handle power off when not in sleep state */
59 	unsigned no_regulator_off_init:1;
60 
61 	/* we can put the features above into this variable */
62 #define HSMMC_HAS_PBIAS		(1 << 0)
63 #define HSMMC_HAS_UPDATED_RESET	(1 << 1)
64 #define HSMMC_HAS_HSPE_SUPPORT	(1 << 2)
65 	unsigned features;
66 
67 	/* string specifying a particular variant of hardware */
68 	char *version;
69 
70 	const char *name;
71 	u32 ocr_mask;
72 };
73