| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef __PLATFORM_DATA_SDHCI_S3C_H |
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| 3 | #define __PLATFORM_DATA_SDHCI_S3C_H |
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| 4 | |
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| 5 | struct platform_device; |
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| 6 | |
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| 7 | enum cd_types { |
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| 8 | S3C_SDHCI_CD_INTERNAL, /* use mmc internal CD line */ |
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| 9 | S3C_SDHCI_CD_EXTERNAL, /* use external callback */ |
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| 10 | S3C_SDHCI_CD_GPIO, /* use external gpio pin for CD line */ |
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| 11 | S3C_SDHCI_CD_NONE, /* no CD line, use polling to detect card */ |
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| 12 | S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */ |
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| 13 | }; |
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| 14 | |
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| 15 | /** |
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| 16 | * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI |
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| 17 | * @max_width: The maximum number of data bits supported. |
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| 18 | * @host_caps: Standard MMC host capabilities bit field. |
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| 19 | * @host_caps2: The second standard MMC host capabilities bit field. |
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| 20 | * @cd_type: Type of Card Detection method (see cd_types enum above) |
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| 21 | * @ext_cd_init: Initialize external card detect subsystem. Called on |
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| 22 | * sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL. |
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| 23 | * notify_func argument is a callback to the sdhci-s3c driver |
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| 24 | * that triggers the card detection event. Callback arguments: |
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| 25 | * dev is pointer to platform device of the host controller, |
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| 26 | * state is new state of the card (0 - removed, 1 - inserted). |
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| 27 | * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on |
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| 28 | * sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL. |
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| 29 | * notify_func argument is the same callback as for ext_cd_init. |
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| 30 | * @ext_cd_gpio: gpio pin used for external CD line, valid only if |
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| 31 | * cd_type == S3C_SDHCI_CD_GPIO |
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| 32 | * @ext_cd_gpio_invert: invert values for external CD gpio line |
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| 33 | * @cfg_gpio: Configure the GPIO for a specific card bit-width |
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| 34 | * |
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| 35 | * Initialisation data specific to either the machine or the platform |
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| 36 | * for the device driver to use or call-back when configuring gpio or |
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| 37 | * card speed information. |
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| 38 | */ |
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| 39 | struct s3c_sdhci_platdata { |
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| 40 | unsigned int max_width; |
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| 41 | unsigned int host_caps; |
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| 42 | unsigned int host_caps2; |
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| 43 | unsigned int pm_caps; |
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| 44 | enum cd_types cd_type; |
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| 45 | |
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| 46 | int ext_cd_gpio; |
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| 47 | bool ext_cd_gpio_invert; |
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| 48 | int (*ext_cd_init)(void (*notify_func)(struct platform_device *, |
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| 49 | int state)); |
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| 50 | int (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *, |
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| 51 | int state)); |
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| 52 | |
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| 53 | void (*cfg_gpio)(struct platform_device *dev, int width); |
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| 54 | }; |
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| 55 | |
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| 56 | |
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| 57 | #endif /* __PLATFORM_DATA_SDHCI_S3C_H */ |
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| 58 | |
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