1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_SPI_MMC_SPI_H
3 #define __LINUX_SPI_MMC_SPI_H
4 
5 #include <linux/spi/spi.h>
6 #include <linux/interrupt.h>
7 
8 struct device;
9 struct mmc_host;
10 
11 /* Put this in platform_data of a device being used to manage an MMC/SD
12  * card slot.  (Modeled after PXA mmc glue; see that for usage examples.)
13  *
14  * REVISIT This is not a spi-specific notion.  Any card slot should be
15  * able to handle it.  If the MMC core doesn't adopt this kind of notion,
16  * switch the "struct device *" parameters over to "struct spi_device *".
17  */
18 struct mmc_spi_platform_data {
19 	/* driver activation and (optional) card detect irq hookup */
20 	int (*init)(struct device *,
21 		irqreturn_t (*)(int, void *),
22 		void *);
23 	void (*exit)(struct device *, void *);
24 
25 	/* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */
26 	unsigned long caps;
27 	unsigned long caps2;
28 
29 	/* how long to debounce card detect, in msecs */
30 	u16 detect_delay;
31 
32 	/* power management */
33 	u16 powerup_msecs;		/* delay of up to 250 msec */
34 	u32 ocr_mask;			/* available voltages */
35 	void (*setpower)(struct device *, unsigned int maskval);
36 };
37 
38 extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi);
39 extern void mmc_spi_put_pdata(struct spi_device *spi);
40 
41 #endif /* __LINUX_SPI_MMC_SPI_H */
42