aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/sdhci-pci.c20
-rw-r--r--drivers/mmc/host/sdhci.c7
-rw-r--r--drivers/mmc/host/sdhci.h2
3 files changed, 29 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 65be27995d5..2f15cc17d88 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -284,6 +284,18 @@ static const struct sdhci_pci_fixes sdhci_jmicron = {
.resume = jmicron_resume,
};
+static int via_probe(struct sdhci_pci_chip *chip)
+{
+ if (chip->pdev->revision == 0x10)
+ chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
+
+ return 0;
+}
+
+static const struct sdhci_pci_fixes sdhci_via = {
+ .probe = via_probe,
+};
+
static const struct pci_device_id pci_ids[] __devinitdata = {
{
.vendor = PCI_VENDOR_ID_RICOH,
@@ -349,6 +361,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
.driver_data = (kernel_ulong_t)&sdhci_jmicron,
},
+ {
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = 0x95d0,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_via,
+ },
+
{ /* Generic SD host controller */
PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
},
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c7586739be1..f4066fdc890 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1057,6 +1057,13 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+
+ /*
+ * Some controllers need an extra 10ms delay of 10ms before they
+ * can apply clock after applying power
+ */
+ if ((host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER))
+ mdelay(10);
}
/*****************************************************************************\
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 5d37dd94b53..831ddf7dcb4 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -230,6 +230,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21)
/* Controller can only handle 1-bit data transfers */
#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22)
+/* Controller needs 10ms delay between applying power and clock */
+#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */