include/linux/platform_data/mmc-mxcmmc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef ASMARM_ARCH_MMC_H
   3 #define ASMARM_ARCH_MMC_H
   4
   5 #include <linux/interrupt.h>
   6 #include <linux/mmc/host.h>
   7
   8 struct device;
   9
  10 /* board specific SDHC data, optional.
  11  * If not present, a writable card with 3,3V is assumed.
  12  */
  13 struct imxmmc_platform_data {
  14         /* Return values for the get_ro callback should be:
  15          *   0 for a read/write card
  16          *   1 for a read-only card
  17          *   -ENOSYS when not supported (equal to NULL callback)
  18          *   or a negative errno value when something bad happened
  19          */
  20         int (*get_ro)(struct device *);
  21
  22         /* board specific hook to (de)initialize the SD slot.
  23          * The board code can call 'handler' on a card detection
  24          * change giving data as argument.
  25          */
  26         int (*init)(struct device *dev, irq_handler_t handler, void *data);
  27         void (*exit)(struct device *dev, void *data);
  28
  29         /* available voltages. If not given, assume
  30          * MMC_VDD_32_33 | MMC_VDD_33_34
  31          */
  32         unsigned int ocr_avail;
  33
  34         /* adjust slot voltage */
  35         void (*setpower)(struct device *, unsigned int vdd);
  36
  37         /* enable card detect using DAT3 */
  38         int dat3_card_detect;
  39 };
  40
  41 #endif