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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
15a0580c DB |
2 | #ifndef __LINUX_SPI_MMC_SPI_H |
3 | #define __LINUX_SPI_MMC_SPI_H | |
4 | ||
9c43df57 | 5 | #include <linux/spi/spi.h> |
63e14626 AV |
6 | #include <linux/interrupt.h> |
7 | ||
313162d0 | 8 | struct device; |
15a0580c DB |
9 | struct mmc_host; |
10 | ||
bf287a90 LP |
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 | ||
15a0580c DB |
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 *); | |
619ef4b4 | 29 | |
bf287a90 LP |
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 | ||
619ef4b4 AV |
40 | /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ |
41 | unsigned long caps; | |
bf287a90 | 42 | unsigned long caps2; |
619ef4b4 | 43 | |
15a0580c DB |
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 | ||
9c43df57 AV |
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 | ||
15a0580c | 65 | #endif /* __LINUX_SPI_MMC_SPI_H */ |