root/include/linux/spi/mmc_spi.h

INCLUDED FROM

DEFINITIONS

1. mmc_spi_get_pdata
2. mmc_spi_put_pdata

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