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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
cc014f3e AB |
2 | #ifndef __PLATFORM_DATA_SDHCI_S3C_H |
3 | #define __PLATFORM_DATA_SDHCI_S3C_H | |
4 | ||
5 | struct platform_device; | |
6 | ||
7 | enum cd_types { | |
8 | S3C_SDHCI_CD_INTERNAL, /* use mmc internal CD line */ | |
9 | S3C_SDHCI_CD_EXTERNAL, /* use external callback */ | |
10 | S3C_SDHCI_CD_GPIO, /* use external gpio pin for CD line */ | |
11 | S3C_SDHCI_CD_NONE, /* no CD line, use polling to detect card */ | |
12 | S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */ | |
13 | }; | |
14 | ||
15 | /** | |
16 | * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI | |
17 | * @max_width: The maximum number of data bits supported. | |
18 | * @host_caps: Standard MMC host capabilities bit field. | |
19 | * @host_caps2: The second standard MMC host capabilities bit field. | |
20 | * @cd_type: Type of Card Detection method (see cd_types enum above) | |
21 | * @ext_cd_init: Initialize external card detect subsystem. Called on | |
22 | * sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL. | |
23 | * notify_func argument is a callback to the sdhci-s3c driver | |
24 | * that triggers the card detection event. Callback arguments: | |
25 | * dev is pointer to platform device of the host controller, | |
26 | * state is new state of the card (0 - removed, 1 - inserted). | |
27 | * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on | |
28 | * sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL. | |
29 | * notify_func argument is the same callback as for ext_cd_init. | |
30 | * @ext_cd_gpio: gpio pin used for external CD line, valid only if | |
31 | * cd_type == S3C_SDHCI_CD_GPIO | |
32 | * @ext_cd_gpio_invert: invert values for external CD gpio line | |
33 | * @cfg_gpio: Configure the GPIO for a specific card bit-width | |
34 | * | |
35 | * Initialisation data specific to either the machine or the platform | |
36 | * for the device driver to use or call-back when configuring gpio or | |
37 | * card speed information. | |
38 | */ | |
39 | struct s3c_sdhci_platdata { | |
40 | unsigned int max_width; | |
41 | unsigned int host_caps; | |
42 | unsigned int host_caps2; | |
43 | unsigned int pm_caps; | |
44 | enum cd_types cd_type; | |
45 | ||
46 | int ext_cd_gpio; | |
47 | bool ext_cd_gpio_invert; | |
48 | int (*ext_cd_init)(void (*notify_func)(struct platform_device *, | |
49 | int state)); | |
50 | int (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *, | |
51 | int state)); | |
52 | ||
53 | void (*cfg_gpio)(struct platform_device *dev, int width); | |
54 | }; | |
55 | ||
56 | ||
57 | #endif /* __PLATFORM_DATA_SDHCI_S3C_H */ |