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