LXR linux/include/linux/platform

   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 */
  29struct 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        struct gpio_desc *bus[6];
  39};
  40
  41/**
  42 * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
  43 * @pdata: The platform data
  44 *
  45 * Copy the platform data supplied by @pdata so that this can be marked
  46 * __initdata.
  47 */
  48extern void s3c24xx_mci_def_set_power(unsigned char power_mode, unsigned short vdd);
  49extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
  50
  51#endif /* _ARCH_NCI_H */
  52