[PATCH] yenta: add support for more TI bridges

Support some more TI cardbus bridges.  most of them are multifunction
devices which adds 1394 controllers, smartcard readers etc.  this could
also help with the various problems with the XX21 controllers seen on the
linux-pcmcia list.

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/pcmcia/ti113x.h b/drivers/pcmcia/ti113x.h
index d319f2e7d053..da0b404561c9 100644
--- a/drivers/pcmcia/ti113x.h
+++ b/drivers/pcmcia/ti113x.h
@@ -59,6 +59,7 @@
 
 #define  TI122X_SCR_SER_STEP            0xc0000000
 #define  TI122X_SCR_INTRTIE             0x20000000
+#define  TIXX21_SCR_TIEALL              0x10000000
 #define  TI122X_SCR_CBRSVD              0x00400000
 #define  TI122X_SCR_MRBURSTDN           0x00008000
 #define  TI122X_SCR_MRBURSTUP           0x00004000
@@ -624,6 +625,7 @@ static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
         int devfn;
         unsigned int state;
         int ret = 1;
+        u32 sysctl;
 
         /* catch the two-slot controllers */
         switch (socket->dev->device) {
@@ -646,6 +648,24 @@ static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
                  */
                 break;
 
+        case PCI_DEVICE_ID_TI_X515:
+        case PCI_DEVICE_ID_TI_X420:
+        case PCI_DEVICE_ID_TI_X620:
+        case PCI_DEVICE_ID_TI_XX21_XX11:
+        case PCI_DEVICE_ID_TI_7410:
+        case PCI_DEVICE_ID_TI_7610:
+                /*
+                 * those are either single or dual slot CB with additional functions
+                 * like 1394, smartcard reader, etc. check the TIEALL flag for them
+                 * the TIEALL flag binds the IRQ of all functions toghether.
+                 * we catch the single slot variants later.
+                 */
+                sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
+                if (sysctl & TIXX21_SCR_TIEALL)
+                        return 0;
+
+                break;
+
         /* single-slot controllers have the 2nd slot empty always :) */
         default:
                 return 1;
@@ -658,6 +678,15 @@ static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
         if (!func)
                 return 1;
 
+        /*
+         * check that the device id of both slots match. this is needed for the
+         * XX21 and the XX11 controller that share the same device id for single
+         * and dual slot controllers. return '2nd slot empty'. we already checked
+         * if the interrupt is tied to another function.
+         */
+        if (socket->dev->device != func->device)
+                goto out;
+
         slot2 = pci_get_drvdata(func);
         if (!slot2)
                 goto out;