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 #define MMC_SPI_USE_CD_GPIO (1 << 0) 12 #define MMC_SPI_USE_RO_GPIO (1 << 1) 13 #define MMC_SPI_CD_GPIO_ACTIVE_LOW (1 << 2) 14 #define MMC_SPI_RO_GPIO_ACTIVE_LOW (1 << 3) 15 16 /* Put this in platform_data of a device being used to manage an MMC/SD 17 * card slot. (Modeled after PXA mmc glue; see that for usage examples.) 18 * 19 * REVISIT This is not a spi-specific notion. Any card slot should be 20 * able to handle it. If the MMC core doesn't adopt this kind of notion, 21 * switch the "struct device *" parameters over to "struct spi_device *". 22 */ 23 struct mmc_spi_platform_data { 24 /* driver activation and (optional) card detect irq hookup */ 25 int (*init)(struct device *, 26 irqreturn_t (*)(int, void *), 27 void *); 28 void (*exit)(struct device *, void *); 29 30 /* 31 * Card Detect and Read Only GPIOs. To enable debouncing on the card 32 * detect GPIO, set the cd_debounce to the debounce time in 33 * microseconds. 34 */ 35 unsigned int flags; 36 unsigned int cd_gpio; 37 unsigned int cd_debounce; 38 unsigned int ro_gpio; 39 40 /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ 41 unsigned long caps; 42 unsigned long caps2; 43 44 /* how long to debounce card detect, in msecs */ 45 u16 detect_delay; 46 47 /* power management */ 48 u16 powerup_msecs; /* delay of up to 250 msec */ 49 u32 ocr_mask; /* available voltages */ 50 void (*setpower)(struct device *, unsigned int maskval); 51 }; 52 53 #ifdef CONFIG_OF 54 extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi); 55 extern void mmc_spi_put_pdata(struct spi_device *spi); 56 #else 57 static inline struct mmc_spi_platform_data * mmc_spi_get_pdata(struct spi_device * spi)58mmc_spi_get_pdata(struct spi_device *spi) 59 { 60 return spi->dev.platform_data; 61 } mmc_spi_put_pdata(struct spi_device * spi)62static inline void mmc_spi_put_pdata(struct spi_device *spi) {} 63 #endif /* CONFIG_OF */ 64 65 #endif /* __LINUX_SPI_MMC_SPI_H */ 66
