diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/sdhci.c | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 74134699ccee..893319108ba4 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -32,9 +32,39 @@ static unsigned int debug_nodma = 0; static unsigned int debug_forcedma = 0; static unsigned int debug_quirks = 0; +#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) +#define SDHCI_QUIRK_FORCE_DMA (1<<1) + static const struct pci_device_id pci_ids[] __devinitdata = { - /* handle any SD host controller */ - {PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)}, + { + .vendor = PCI_VENDOR_ID_RICOH, + .device = PCI_DEVICE_ID_RICOH_R5C822, + .subvendor = PCI_VENDOR_ID_IBM, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET | + SDHCI_QUIRK_FORCE_DMA, + }, + + { + .vendor = PCI_VENDOR_ID_RICOH, + .device = PCI_DEVICE_ID_RICOH_R5C822, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_FORCE_DMA, + }, + + { + .vendor = PCI_VENDOR_ID_TI, + .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_FORCE_DMA, + }, + + { /* Generic SD host controller */ + PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) + }, + { /* end: all zeroes */ }, }; @@ -440,9 +470,7 @@ static void sdhci_finish_data(struct sdhci_host *host) "though there were blocks left. Please report this " "to " BUGMAIL ".\n", mmc_hostname(host->mmc)); data->error = MMC_ERR_FAILED; - } - - if (host->size != 0) { + } else if (host->size != 0) { printk(KERN_ERR "%s: %d bytes were left untransferred. " "Please report this to " BUGMAIL ".\n", mmc_hostname(host->mmc), host->size); @@ -808,6 +836,19 @@ static void sdhci_tasklet_finish(unsigned long param) if ((mrq->cmd->error != MMC_ERR_NONE) || (mrq->data && ((mrq->data->error != MMC_ERR_NONE) || (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) { + + /* Some controllers need this kick or reset won't work here */ + if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { + unsigned int clock; + + /* This is to force an update */ + clock = host->clock; + host->clock = 0; + sdhci_set_clock(host, clock); + } + + /* Spec says we should do both at the same time, but Ricoh + controllers do not like that. */ sdhci_reset(host, SDHCI_RESET_CMD); sdhci_reset(host, SDHCI_RESET_DATA); } @@ -1165,7 +1206,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) else if (debug_forcedma) { DBG("DMA forced on\n"); host->flags |= SDHCI_USE_DMA; - } else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) + } else if (chip->quirks & SDHCI_QUIRK_FORCE_DMA) + host->flags |= SDHCI_USE_DMA; + else if ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) DBG("Controller doesn't have DMA interface\n"); else if (!(caps & SDHCI_CAN_DO_DMA)) DBG("Controller doesn't have DMA capability\n"); |