diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 56de4c48ec80..dd4bfb594479 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -34,6 +34,7 @@ static unsigned int debug_quirks = 0; /* Controller doesn't like some resets when there is no card inserted. */ #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) +#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) static const struct pci_device_id pci_ids[] __devinitdata = { { @@ -78,6 +79,24 @@ static const struct pci_device_id pci_ids[] __devinitdata = { .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, }, + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD_2, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, + }, + { /* Generic SD host controller */ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) }, @@ -759,6 +778,14 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); + /* + * Some (ENE) controllers go apeshit on some ios operation, + * signalling timeout and CRC errors even on CMD0. Resetting + * it on each ios seems to solve the problem. + */ + if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) + sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); + mmiowb(); spin_unlock_irqrestore(&host->lock, flags); } |