Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b8352260d28b30cb2bb2df99814fb9c360e38901
Commit: b8352260d28b30cb2bb2df99814fb9c360e38901
Parent: 43b58b36b7e6554b8a96be6b9f63542c583c06e5
Author: Leandro Dorileo <[EMAIL PROTECTED]>
AuthorDate: Wed Jul 25 23:47:04 2007 +0200
Committer: Pierre Ossman <[EMAIL PROTECTED]>
CommitDate: Thu Jul 26 01:53:09 2007 +0200
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 <[EMAIL PROTECTED]>
Signed-off-by: Otavio Salvador <[EMAIL PROTECTED]>
Signed-off-by: Pierre Ossman <[EMAIL PROTECTED]>
---
drivers/mmc/host/sdhci.c | 27 +++++++++++++++++++++++++++
include/linux/pci_ids.h | 2 ++
2 files changed, 29 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);
}
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index cbabb9c..0befd95 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1972,6 +1972,8 @@
#define PCI_VENDOR_ID_ENE 0x1524
#define PCI_DEVICE_ID_ENE_CB712_SD 0x0550
#define PCI_DEVICE_ID_ENE_CB712_SD_2 0x0551
+#define PCI_DEVICE_ID_ENE_CB714_SD 0x0750
+#define PCI_DEVICE_ID_ENE_CB714_SD_2 0x0751
#define PCI_DEVICE_ID_ENE_1211 0x1211
#define PCI_DEVICE_ID_ENE_1225 0x1225
#define PCI_DEVICE_ID_ENE_1410 0x1410
-
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