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