1#ifndef ASMARM_ARCH_MMC_H 2#define ASMARM_ARCH_MMC_H 3 4#include <linux/mmc/host.h> 5 6struct device; 7 8/* board specific SDHC data, optional. 9 * If not present, a writable card with 3,3V is assumed. 10 */ 11struct 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 40