Commit 75d27ea1 authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson

mmc: sdhci: Add a quirk for broken command queuing

Command queuing has been reported broken on some systems based on Intel
GLK. A separate patch disables command queuing in some cases.

This patch adds a quirk for broken command queuing, which enables users
with problems to disable command queuing using sdhci module parameters for
quirks.

Fixes: 8ee82bda ("mmc: sdhci-pci: Add CQHCI support for Intel GLK")
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191217095349.14592-2-adrian.hunter@intel.comSigned-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent bedf9fc0
......@@ -3767,6 +3767,9 @@ int sdhci_setup_host(struct sdhci_host *host)
mmc_hostname(mmc), host->version);
}
if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
mmc->caps2 &= ~MMC_CAP2_CQE;
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(host->caps & SDHCI_CAN_DO_SDMA))
......
......@@ -409,6 +409,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
/* Controller reports inverted write-protect state */
#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
/* Controller has unusable command queue engine */
#define SDHCI_QUIRK_BROKEN_CQE (1<<17)
/* Controller does not like fast PIO transfers */
#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
/* Controller does not have a LED */
......
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