linux/platform_data/mmc-s3cmci.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _ARCH_MCI_H
0003 #define _ARCH_MCI_H
0004
0005 /**
0006  * struct s3c24xx_mci_pdata - sd/mmc controller platform data
0007  * @no_wprotect: Set this to indicate there is no write-protect switch.
0008  * @no_detect: Set this if there is no detect switch.
0009  * @wprotect_invert: Invert the default sense of the write protect switch.
0010  * @use_dma: Set to allow the use of DMA.
0011  * @gpio_detect: GPIO number for the card detect line.
0012  * @gpio_wprotect: GPIO number for the write protect line.
0013  * @ocr_avail: The mask of the available power states, non-zero to use.
0014  * @set_power: Callback to control the power mode.
0015  *
0016  * The @gpio_detect is used for card detection when @no_wprotect is unset,
0017  * and the default sense is that 0 returned from gpio_get_value() means
0018  * that a card is inserted. If @detect_invert is set, then the value from
0019  * gpio_get_value() is inverted, which makes 1 mean card inserted.
0020  *
0021  * The driver will use @gpio_wprotect to signal whether the card is write
0022  * protected if @no_wprotect is not set. A 0 returned from gpio_get_value()
0023  * means the card is read/write, and 1 means read-only. The @wprotect_invert
0024  * will invert the value returned from gpio_get_value().
0025  *
0026  * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set
0027  * to a non-zero value, otherwise the default of 3.2-3.4V is used.
0028  */
0029 struct s3c24xx_mci_pdata {
0030     unsigned int    no_wprotect:1;
0031     unsigned int    no_detect:1;
0032     unsigned int    wprotect_invert:1;
0033     unsigned int    use_dma:1;
0034
0035     unsigned long   ocr_avail;
0036     void        (*set_power)(unsigned char power_mode,
0037                      unsigned short vdd);
0038     struct gpio_desc *bus[6];
0039 };
0040
0041 /**
0042  * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
0043  * @pdata: The platform data
0044  *
0045  * Copy the platform data supplied by @pdata so that this can be marked
0046  * __initdata.
0047  */
0048 extern void s3c24xx_mci_def_set_power(unsigned char power_mode, unsigned short vdd);
0049 extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
0050
0051 #endif /* _ARCH_NCI_H */