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authorFrank Seidel <fseidel@suse.de>2008-02-04 19:25:42 +0100
committerPierre Ossman <drzeus@drzeus.cx>2008-02-08 09:02:47 +0100
commit882c49164d72c45f37d7fa1bb3de7c31cf1a5fab (patch)
tree2db5b00ad700c31999fc5e3eecd5d8a28b84fad4 /drivers/mmc/host
parent6e996ee8e730a50eef51cdb072b166fe8f80831e (diff)
mmc: extend ricoh_mmc to support Ricoh RL5c476
This patch adds support for the Ricoh RL5c476 chip: with this the mmc adapter that needs this disabler (R5C843) can also be handled correctly when it sits on a RL5c476. Signed-off-by: Frank Seidel <fseidel@suse.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/ricoh_mmc.c101
1 files changed, 80 insertions, 21 deletions
diff --git a/drivers/mmc/host/ricoh_mmc.c b/drivers/mmc/host/ricoh_mmc.c
index 898e7991cae..a16d7609e4e 100644
--- a/drivers/mmc/host/ricoh_mmc.c
+++ b/drivers/mmc/host/ricoh_mmc.c
@@ -44,19 +44,43 @@ MODULE_DEVICE_TABLE(pci, pci_ids);
static int ricoh_mmc_disable(struct pci_dev *fw_dev)
{
u8 write_enable;
+ u8 write_target;
u8 disable;
- pci_read_config_byte(fw_dev, 0xCB, &disable);
- if (disable & 0x02) {
- printk(KERN_INFO DRIVER_NAME
- ": Controller already disabled. Nothing to do.\n");
- return -ENODEV;
- }
+ if (fw_dev->device == PCI_DEVICE_ID_RICOH_RL5C476) {
+ /* via RL5C476 */
- pci_read_config_byte(fw_dev, 0xCA, &write_enable);
- pci_write_config_byte(fw_dev, 0xCA, 0x57);
- pci_write_config_byte(fw_dev, 0xCB, disable | 0x02);
- pci_write_config_byte(fw_dev, 0xCA, write_enable);
+ pci_read_config_byte(fw_dev, 0xB7, &disable);
+ if (disable & 0x02) {
+ printk(KERN_INFO DRIVER_NAME
+ ": Controller already disabled. " \
+ "Nothing to do.\n");
+ return -ENODEV;
+ }
+
+ pci_read_config_byte(fw_dev, 0x8E, &write_enable);
+ pci_write_config_byte(fw_dev, 0x8E, 0xAA);
+ pci_read_config_byte(fw_dev, 0x8D, &write_target);
+ pci_write_config_byte(fw_dev, 0x8D, 0xB7);
+ pci_write_config_byte(fw_dev, 0xB7, disable | 0x02);
+ pci_write_config_byte(fw_dev, 0x8E, write_enable);
+ pci_write_config_byte(fw_dev, 0x8D, write_target);
+ } else {
+ /* via R5C832 */
+
+ pci_read_config_byte(fw_dev, 0xCB, &disable);
+ if (disable & 0x02) {
+ printk(KERN_INFO DRIVER_NAME
+ ": Controller already disabled. " \
+ "Nothing to do.\n");
+ return -ENODEV;
+ }
+
+ pci_read_config_byte(fw_dev, 0xCA, &write_enable);
+ pci_write_config_byte(fw_dev, 0xCA, 0x57);
+ pci_write_config_byte(fw_dev, 0xCB, disable | 0x02);
+ pci_write_config_byte(fw_dev, 0xCA, write_enable);
+ }
printk(KERN_INFO DRIVER_NAME
": Controller is now disabled.\n");
@@ -67,13 +91,29 @@ static int ricoh_mmc_disable(struct pci_dev *fw_dev)
static int ricoh_mmc_enable(struct pci_dev *fw_dev)
{
u8 write_enable;
+ u8 write_target;
u8 disable;
- pci_read_config_byte(fw_dev, 0xCA, &write_enable);
- pci_read_config_byte(fw_dev, 0xCB, &disable);
- pci_write_config_byte(fw_dev, 0xCA, 0x57);
- pci_write_config_byte(fw_dev, 0xCB, disable & ~0x02);
- pci_write_config_byte(fw_dev, 0xCA, write_enable);
+ if (fw_dev->device == PCI_DEVICE_ID_RICOH_RL5C476) {
+ /* via RL5C476 */
+
+ pci_read_config_byte(fw_dev, 0x8E, &write_enable);
+ pci_write_config_byte(fw_dev, 0x8E, 0xAA);
+ pci_read_config_byte(fw_dev, 0x8D, &write_target);
+ pci_write_config_byte(fw_dev, 0x8D, 0xB7);
+ pci_read_config_byte(fw_dev, 0xB7, &disable);
+ pci_write_config_byte(fw_dev, 0xB7, disable & ~0x02);
+ pci_write_config_byte(fw_dev, 0x8E, write_enable);
+ pci_write_config_byte(fw_dev, 0x8D, write_target);
+ } else {
+ /* via R5C832 */
+
+ pci_read_config_byte(fw_dev, 0xCA, &write_enable);
+ pci_read_config_byte(fw_dev, 0xCB, &disable);
+ pci_write_config_byte(fw_dev, 0xCA, 0x57);
+ pci_write_config_byte(fw_dev, 0xCB, disable & ~0x02);
+ pci_write_config_byte(fw_dev, 0xCA, write_enable);
+ }
printk(KERN_INFO DRIVER_NAME
": Controller is now re-enabled.\n");
@@ -85,6 +125,7 @@ static int __devinit ricoh_mmc_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
u8 rev;
+ u8 ctrlfound = 0;
struct pci_dev *fw_dev = NULL;
@@ -98,20 +139,38 @@ static int __devinit ricoh_mmc_probe(struct pci_dev *pdev,
pci_name(pdev), (int)pdev->vendor, (int)pdev->device,
(int)rev);
- while ((fw_dev = pci_get_device(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, fw_dev))) {
+ while ((fw_dev =
+ pci_get_device(PCI_VENDOR_ID_RICOH,
+ PCI_DEVICE_ID_RICOH_RL5C476, fw_dev))) {
if (PCI_SLOT(pdev->devfn) == PCI_SLOT(fw_dev->devfn) &&
pdev->bus == fw_dev->bus) {
- if (ricoh_mmc_disable(fw_dev) != 0) {
+ if (ricoh_mmc_disable(fw_dev) != 0)
return -ENODEV;
- }
pci_set_drvdata(pdev, fw_dev);
+ ++ctrlfound;
break;
}
}
- if (pci_get_drvdata(pdev) == NULL) {
+ fw_dev = NULL;
+
+ while (!ctrlfound &&
+ (fw_dev = pci_get_device(PCI_VENDOR_ID_RICOH,
+ PCI_DEVICE_ID_RICOH_R5C832, fw_dev))) {
+ if (PCI_SLOT(pdev->devfn) == PCI_SLOT(fw_dev->devfn) &&
+ pdev->bus == fw_dev->bus) {
+ if (ricoh_mmc_disable(fw_dev) != 0)
+ return -ENODEV;
+
+ pci_set_drvdata(pdev, fw_dev);
+
+ ++ctrlfound;
+ }
+ }
+
+ if (!ctrlfound) {
printk(KERN_WARNING DRIVER_NAME
": Main firewire function not found. Cannot disable controller.\n");
return -ENODEV;
@@ -132,7 +191,7 @@ static void __devexit ricoh_mmc_remove(struct pci_dev *pdev)
pci_set_drvdata(pdev, NULL);
}
-static int ricoh_mmc_suspend (struct pci_dev *pdev, pm_message_t state)
+static int ricoh_mmc_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct pci_dev *fw_dev = NULL;
@@ -146,7 +205,7 @@ static int ricoh_mmc_suspend (struct pci_dev *pdev, pm_message_t state)
return 0;
}
-static int ricoh_mmc_resume (struct pci_dev *pdev)
+static int ricoh_mmc_resume(struct pci_dev *pdev)
{
struct pci_dev *fw_dev = NULL;