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mmc: sdhci: Add quirk for always getting TC with stop cmd 

Add a quirk for a host controller that always sets
a Transfer Complete interrupt status for the stop
command even when a busy response is not indicated.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2014-09-24 10:27:27 +03:00 committed by Ulf Hansson
parent 89168b4899
commit 6154139794
2 changed files with 8 additions and 2 deletions
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8
drivers/mmc/host/sdhci.c
View File

@ -2225,7 +2225,7 @@ static void sdhci_tuning_timer(unsigned long data)
* *
\*****************************************************************************/
static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask)
{
BUG_ON(intmask == 0);
@ -2272,6 +2272,9 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
/* The controller does not support the end-of-busy IRQ,
* fall through and take the SDHCI_INT_RESPONSE */
} else if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&
host->cmd->opcode == MMC_STOP_TRANSMISSION && !host->data) {
*mask &= ~SDHCI_INT_DATA_END;
}
if (intmask & SDHCI_INT_RESPONSE)
@ -2481,7 +2484,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
}
if (intmask & SDHCI_INT_CMD_MASK)
sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK,
&intmask);
if (intmask & SDHCI_INT_DATA_MASK)
sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);

2
include/linux/mmc/sdhci.h
View File

@ -98,6 +98,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6)
/* Controller does not support DDR50 */
#define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7)
/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */
#define SDHCI_QUIRK2_STOP_WITH_TC (1<<8)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */