linux/spi/mmc_spi.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __LINUX_SPI_MMC_SPI_H
0003 #define __LINUX_SPI_MMC_SPI_H
0004
0005 #include <linux/spi/spi.h>
0006 #include <linux/interrupt.h>
0007
0008 struct device;
0009 struct mmc_host;
0010
0011 /* Put this in platform_data of a device being used to manage an MMC/SD
0012  * card slot.  (Modeled after PXA mmc glue; see that for usage examples.)
0013  *
0014  * REVISIT This is not a spi-specific notion.  Any card slot should be
0015  * able to handle it.  If the MMC core doesn't adopt this kind of notion,
0016  * switch the "struct device *" parameters over to "struct spi_device *".
0017  */
0018 struct mmc_spi_platform_data {
0019     /* driver activation and (optional) card detect irq hookup */
0020     int (*init)(struct device *,
0021         irqreturn_t (*)(int, void *),
0022         void *);
0023     void (*exit)(struct device *, void *);
0024
0025     /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */
0026     unsigned long caps;
0027     unsigned long caps2;
0028
0029     /* how long to debounce card detect, in msecs */
0030     u16 detect_delay;
0031
0032     /* power management */
0033     u16 powerup_msecs;      /* delay of up to 250 msec */
0034     u32 ocr_mask;           /* available voltages */
0035     void (*setpower)(struct device *, unsigned int maskval);
0036 };
0037
0038 extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi);
0039 extern void mmc_spi_put_pdata(struct spi_device *spi);
0040
0041 #endif /* __LINUX_SPI_MMC_SPI_H */