include/linux/platform_data/mmc-mxcmmc.h

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