include/linux/platform_data/mmc-s3cmci.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ARCH_MCI_H
   3 #define _ARCH_MCI_H
   4
   5 /**
   6  * struct s3c24xx_mci_pdata - sd/mmc controller platform data
   7  * @no_wprotect: Set this to indicate there is no write-protect switch.
   8  * @no_detect: Set this if there is no detect switch.
   9  * @wprotect_invert: Invert the default sense of the write protect switch.
  10  * @use_dma: Set to allow the use of DMA.
  11  * @gpio_detect: GPIO number for the card detect line.
  12  * @gpio_wprotect: GPIO number for the write protect line.
  13  * @ocr_avail: The mask of the available power states, non-zero to use.
  14  * @set_power: Callback to control the power mode.
  15  *
  16  * The @gpio_detect is used for card detection when @no_wprotect is unset,
  17  * and the default sense is that 0 returned from gpio_get_value() means
  18  * that a card is inserted. If @detect_invert is set, then the value from
  19  * gpio_get_value() is inverted, which makes 1 mean card inserted.
  20  *
  21  * The driver will use @gpio_wprotect to signal whether the card is write
  22  * protected if @no_wprotect is not set. A 0 returned from gpio_get_value()
  23  * means the card is read/write, and 1 means read-only. The @wprotect_invert
  24  * will invert the value returned from gpio_get_value().
  25  *
  26  * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set
  27  * to a non-zero value, otherwise the default of 3.2-3.4V is used.
  28  */
  29 struct s3c24xx_mci_pdata {
  30         unsigned int    no_wprotect:1;
  31         unsigned int    no_detect:1;
  32         unsigned int    wprotect_invert:1;
  33         unsigned int    use_dma:1;
  34
  35         unsigned long   ocr_avail;
  36         void            (*set_power)(unsigned char power_mode,
  37                                      unsigned short vdd);
  38 };
  39
  40 /**
  41  * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
  42  * @pdata: The platform data
  43  *
  44  * Copy the platform data supplied by @pdata so that this can be marked
  45  * __initdata.
  46  */
  47 extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
  48
  49 #endif /* _ARCH_NCI_H */