diff options
| -rw-r--r-- | drivers/mmc/sdhci.c | 22 | ||||
| -rw-r--r-- | include/linux/pci_ids.h | 1 |
2 files changed, 20 insertions, 3 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index c2d13d7e9911..175a9427b9ba 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -37,6 +37,7 @@ static unsigned int debug_quirks = 0; #define SDHCI_QUIRK_FORCE_DMA (1<<1) /* 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) static const struct pci_device_id pci_ids[] __devinitdata = { { @@ -65,6 +66,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = { .driver_data = SDHCI_QUIRK_FORCE_DMA, }, + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB712_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, + }, + { /* Generic SD host controller */ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) }, @@ -674,10 +683,17 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) if (host->power == power) return; - writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); - - if (power == (unsigned short)-1) + if (power == (unsigned short)-1) { + writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); goto out; + } + + /* + * Spec says that we should clear the power reg before setting + * a new value. Some controllers don't seem to like this though. + */ + if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) + writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); pwr = SDHCI_POWER_ON; diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3d1d21035dec..d37f46aaaea1 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1971,6 +1971,7 @@ #define PCI_DEVICE_ID_TOPIC_TP560 0x0000 #define PCI_VENDOR_ID_ENE 0x1524 +#define PCI_DEVICE_ID_ENE_CB712_SD 0x0550 #define PCI_DEVICE_ID_ENE_1211 0x1211 #define PCI_DEVICE_ID_ENE_1225 0x1225 #define PCI_DEVICE_ID_ENE_1410 0x1410 |