release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-mxc/include/mach/mmc.h

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