1 /* SPDX-License-Identifier: GPL-2.0 */ 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 */ 58