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#ifndef __BACKPORT_MMC_SDIO_FUNC_H
#define __BACKPORT_MMC_SDIO_FUNC_H
#include <linux/version.h>
#include_next <linux/mmc/sdio_func.h>
#ifndef dev_to_sdio_func
#define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
#endif
#if LINUX_VERSION_IS_LESS(5,2,0) && \
!LINUX_VERSION_IN_RANGE(5,1,15, 5,2,0) && \
!LINUX_VERSION_IN_RANGE(4,19,56, 4,20,0)
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
/**
* sdio_retune_hold_now - start deferring retuning requests till release
* @func: SDIO function attached to host
*
* This function can be called if it's currently a bad time to do
* a retune of the SDIO card. Retune requests made during this time
* will be held and we'll actually do the retune sometime after the
* release.
*
* This function could be useful if an SDIO card is in a power state
* where it can respond to a small subset of commands that doesn't
* include the retuning command. Care should be taken when using
* this function since (presumably) the retuning request we might be
* deferring was made for a good reason.
*
* This function should be called while the host is claimed.
*/
#define sdio_retune_hold_now LINUX_BACKPORT(sdio_retune_hold_now)
#if LINUX_VERSION_IS_LESS(4,3,0)
static inline void sdio_retune_hold_now(struct sdio_func *func)
{
}
#else
static inline void sdio_retune_hold_now(struct sdio_func *func)
{
struct mmc_host *host = func->card->host;
host->retune_now = 0;
host->hold_retune += 1;
}
#endif /* < 4.3 */
/**
* sdio_retune_release - signal that it's OK to retune now
* @func: SDIO function attached to host
*
* This is the complement to sdio_retune_hold_now(). Calling this
* function won't make a retune happen right away but will allow
* them to be scheduled normally.
*
* This function should be called while the host is claimed.
*/
#define sdio_retune_release LINUX_BACKPORT(sdio_retune_release)
#if LINUX_VERSION_IS_LESS(4,3,0)
static inline void sdio_retune_release(struct sdio_func *func)
{
}
#else
static inline void sdio_retune_release(struct sdio_func *func)
{
struct mmc_host *host = func->card->host;
if (host->hold_retune)
host->hold_retune -= 1;
else
WARN_ON(1);
}
#endif
#define sdio_retune_crc_disable LINUX_BACKPORT(sdio_retune_crc_disable)
static inline void sdio_retune_crc_disable(struct sdio_func *func)
{
}
#define sdio_retune_crc_enable LINUX_BACKPORT(sdio_retune_crc_enable)
static inline void sdio_retune_crc_enable(struct sdio_func *func)
{
}
#endif /* < 5.2 */
#endif /* __BACKPORT_MMC_SDIO_FUNC_H */
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