1#ifndef __LINUX_SPI_MMC_SPI_H 2#define __LINUX_SPI_MMC_SPI_H 3 4#include <linux/spi/spi.h> 5#include <linux/interrupt.h> 6 7struct device; 8struct mmc_host; 9 10#define MMC_SPI_USE_CD_GPIO (1 << 0) 11#define MMC_SPI_USE_RO_GPIO (1 << 1) 12#define MMC_SPI_CD_GPIO_ACTIVE_LOW (1 << 2) 13#define MMC_SPI_RO_GPIO_ACTIVE_LOW (1 << 3) 14 15/* Put this in platform_data of a device being used to manage an MMC/SD 16 * card slot. (Modeled after PXA mmc glue; see that for usage examples.) 17 * 18 * REVISIT This is not a spi-specific notion. Any card slot should be 19 * able to handle it. If the MMC core doesn't adopt this kind of notion, 20 * switch the "struct device *" parameters over to "struct spi_device *". 21 */ 22struct mmc_spi_platform_data { 23 /* driver activation and (optional) card detect irq hookup */ 24 int (*init)(struct device *, 25 irqreturn_t (*)(int, void *), 26 void *); 27 void (*exit)(struct device *, void *); 28 29 /* 30 * Card Detect and Read Only GPIOs. To enable debouncing on the card 31 * detect GPIO, set the cd_debounce to the debounce time in 32 * microseconds. 33 */ 34 unsigned int flags; 35 unsigned int cd_gpio; 36 unsigned int cd_debounce; 37 unsigned int ro_gpio; 38 39 /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ 40 unsigned long caps; 41 unsigned long caps2; 42 43 /* how long to debounce card detect, in msecs */ 44 u16 detect_delay; 45 46 /* power management */ 47 u16 powerup_msecs; /* delay of up to 250 msec */ 48 u32 ocr_mask; /* available voltages */ 49 void (*setpower)(struct device *, unsigned int maskval); 50}; 51 52#ifdef CONFIG_OF 53extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi); 54extern void mmc_spi_put_pdata(struct spi_device *spi); 55#else 56static inline struct mmc_spi_platform_data * 57mmc_spi_get_pdata(struct spi_device *spi) 58{ 59 return spi->dev.platform_data; 60} 61static inline void mmc_spi_put_pdata(struct spi_device *spi) {} 62#endif /* CONFIG_OF */ 63 64#endif /* __LINUX_SPI_MMC_SPI_H */ 65