| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 * |
| 58 | mmc_spi_get_pdata(struct spi_device *spi) |
| 59 | { |
| 60 | return spi->dev.platform_data; |
| 61 | } |
| 62 | static inline void mmc_spi_put_pdata(struct spi_device *spi) {} |
| 63 | #endif /* CONFIG_OF */ |
| 64 | |
| 65 | #endif /* __LINUX_SPI_MMC_SPI_H */ |