sdhci: describe quirks

static unsigned int debug_quirks = 0;

/*

 * Different quirks to handle when the hardware deviates from a strict

 * interpretation of the SDHCI specification.

 */

/* Controller doesn't honor resets unless we touch the clock register */

#define SDHCI_QUIRK_CLOCK_BEFORE_RESET			(1<<0)

/* Controller has bad caps bits, but really supports DMA */

#define SDHCI_QUIRK_FORCE_DMA				(1<<1)

/* Controller doesn't like some resets when there is no card inserted. */

#define SDHCI_QUIRK_NO_CARD_NO_RESET			(1<<2)

/* Controller doesn't like clearing the power reg before a change */

#define SDHCI_QUIRK_SINGLE_POWER_WRITE			(1<<3)

/* Controller has flaky internal state so reset it on each ios change */

#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS		(1<<4)

/* Controller has an unusable DMA engine */

#define SDHCI_QUIRK_BROKEN_DMA				(1<<5)

static const struct pci_device_id pci_ids[] __devinitdata = {