619ef4b421
This patch adds new platform data variable "caps", so platforms could pass theirs capabilities into MMC core (for example, platforms without interrupt on the CD line will most probably want to pass MMC_CAP_NEEDS_POLL). New platform get_cd() callback provided to optimize polling. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
#ifndef __LINUX_SPI_MMC_SPI_H
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#define __LINUX_SPI_MMC_SPI_H
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#include <linux/interrupt.h>
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struct device;
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struct mmc_host;
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/* Put this in platform_data of a device being used to manage an MMC/SD
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* card slot. (Modeled after PXA mmc glue; see that for usage examples.)
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*
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* REVISIT This is not a spi-specific notion. Any card slot should be
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* able to handle it. If the MMC core doesn't adopt this kind of notion,
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* switch the "struct device *" parameters over to "struct spi_device *".
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*/
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struct mmc_spi_platform_data {
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/* driver activation and (optional) card detect irq hookup */
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int (*init)(struct device *,
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irqreturn_t (*)(int, void *),
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void *);
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void (*exit)(struct device *, void *);
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/* sense switch on sd cards */
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int (*get_ro)(struct device *);
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/*
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* If board does not use CD interrupts, driver can optimize polling
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* using this function.
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*/
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int (*get_cd)(struct device *);
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/* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */
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unsigned long caps;
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/* how long to debounce card detect, in msecs */
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u16 detect_delay;
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/* power management */
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u16 powerup_msecs; /* delay of up to 250 msec */
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u32 ocr_mask; /* available voltages */
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void (*setpower)(struct device *, unsigned int maskval);
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};
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#endif /* __LINUX_SPI_MMC_SPI_H */
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