LXR linux/include/linux/spi/mmc

   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
   8struct device;
   9struct 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 */
  18struct 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#ifdef CONFIG_OF
  39extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi);
  40extern void mmc_spi_put_pdata(struct spi_device *spi);
  41#else
  42static inline struct mmc_spi_platform_data *
  43mmc_spi_get_pdata(struct spi_device *spi)
  44{
  45        return spi->dev.platform_data;
  46}
  47static inline void mmc_spi_put_pdata(struct spi_device *spi) {}
  48#endif /* CONFIG_OF */
  49
  50#endif /* __LINUX_SPI_MMC_SPI_H */
  51