Commit f945405c authored by Ben Dooks's avatar Ben Dooks Committed by Pierre Ossman
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sdhci: Add quirk for controllers with no end-of-busy IRQ

The Samsung SDHCI (and FSL eSDHC) controller block seems to fail
to generate an INT_DATA_END after the transfer has completed and
the bus busy state finished.

Changes in e809517f

 to use the
new busy method are the cause of the behaviour change.
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 778ef1e6
......@@ -1291,8 +1291,11 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
if (host->cmd->data)
DBG("Cannot wait for busy signal when also "
"doing a data transfer");
else
else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ))
return;
/* The controller does not support the end-of-busy IRQ,
* fall through and take the SDHCI_INT_RESPONSE */
}
if (intmask & SDHCI_INT_RESPONSE)
......
......@@ -208,6 +208,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12)
/* Controller has an issue with buffer bits for small transfers */
#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13)
/* Controller does not provide transfer-complete interrupt when not busy */
#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
......
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