57 lines
2.2 KiB
C
57 lines
2.2 KiB
C
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#ifndef __PLATFORM_DATA_SDHCI_S3C_H
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#define __PLATFORM_DATA_SDHCI_S3C_H
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struct platform_device;
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enum cd_types {
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S3C_SDHCI_CD_INTERNAL, /* use mmc internal CD line */
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S3C_SDHCI_CD_EXTERNAL, /* use external callback */
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S3C_SDHCI_CD_GPIO, /* use external gpio pin for CD line */
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S3C_SDHCI_CD_NONE, /* no CD line, use polling to detect card */
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S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
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};
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/**
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* struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
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* @max_width: The maximum number of data bits supported.
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* @host_caps: Standard MMC host capabilities bit field.
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* @host_caps2: The second standard MMC host capabilities bit field.
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* @cd_type: Type of Card Detection method (see cd_types enum above)
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* @ext_cd_init: Initialize external card detect subsystem. Called on
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* sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
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* notify_func argument is a callback to the sdhci-s3c driver
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* that triggers the card detection event. Callback arguments:
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* dev is pointer to platform device of the host controller,
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* state is new state of the card (0 - removed, 1 - inserted).
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* @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
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* sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
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* notify_func argument is the same callback as for ext_cd_init.
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* @ext_cd_gpio: gpio pin used for external CD line, valid only if
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* cd_type == S3C_SDHCI_CD_GPIO
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* @ext_cd_gpio_invert: invert values for external CD gpio line
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* @cfg_gpio: Configure the GPIO for a specific card bit-width
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*
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* Initialisation data specific to either the machine or the platform
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* for the device driver to use or call-back when configuring gpio or
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* card speed information.
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*/
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struct s3c_sdhci_platdata {
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unsigned int max_width;
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unsigned int host_caps;
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unsigned int host_caps2;
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unsigned int pm_caps;
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enum cd_types cd_type;
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int ext_cd_gpio;
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bool ext_cd_gpio_invert;
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int (*ext_cd_init)(void (*notify_func)(struct platform_device *,
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int state));
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int (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
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int state));
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void (*cfg_gpio)(struct platform_device *dev, int width);
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};
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#endif /* __PLATFORM_DATA_SDHCI_S3C_H */
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