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| author | Leandro Dorileo <dorileo@ossystems.com.br> | 2007-07-25 23:47:04 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-07-26 01:53:09 +0200 |
| commit | b8352260d28b30cb2bb2df99814fb9c360e38901 (patch) | |
| tree | 008c36650fc15a3a7e0d3b6e5930f05b2b40fb42 /drivers/mmc | |
| parent | 43b58b36b7e6554b8a96be6b9f63542c583c06e5 (diff) | |
| download | kernel_samsung_smdk4412-b8352260d28b30cb2bb2df99814fb9c360e38901.zip kernel_samsung_smdk4412-b8352260d28b30cb2bb2df99814fb9c360e38901.tar.gz kernel_samsung_smdk4412-b8352260d28b30cb2bb2df99814fb9c360e38901.tar.bz2 | |
sdhci: add support to ENE-CB714
Added its pci_id and implemented a quirk for it because this
controller needs to reset cmd and data when setting ios.
Signed-off-by: Leandro Dorileo <dorileo@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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 56de4c4..dd4bfb5 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); } |