source: freewrt/target/linux/au1000-2.6/patches/008-isdel_cardbus.patch@ 475ad56

arch/mips/au1000/mtx-1/board_setup.c

@@ -44 +44 @@
 #include <asm/pgtable.h>
 #include <asm/mach-au1x00/au1000.h>
 
+extern int (*board_pci_idsel)(unsigned int devsel, int assert);
+int    mtx1_pci_idsel(unsigned int devsel, int assert);
+
 void board_reset (void)
 {
         /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
@@ -77 +80 @@
         au_writel( 0xFFFFFFFF, SYS_TRIOUTCLR );
         au_writel( 0x00000001, SYS_OUTPUTCLR ); // set M66EN (PCI 66MHz) to OFF
         au_writel( 0x00000008, SYS_OUTPUTSET ); // set PCI CLKRUN# to OFF
+        au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
         au_writel( 0x00000020, SYS_OUTPUTCLR ); // set eth PHY TX_ER to OFF
 
         // enable LED and set it to green
         au_writel( au_readl(GPIO2_DIR) | 0x1800, GPIO2_DIR );
         au_writel( 0x18000800, GPIO2_OUTPUT );
 
+        board_pci_idsel = mtx1_pci_idsel;
+
         printk("4G Systems MTX-1 Board\n");
 }
+
+int
+mtx1_pci_idsel(unsigned int devsel, int assert)
+{
+#define MTX_IDSEL_ONLY_0_AND_3 0
+#if MTX_IDSEL_ONLY_0_AND_3
+       if (devsel != 0 && devsel != 3) {
+               printk("*** not 0 or 3\n");
+               return 0;
+       }
+#endif
+
+       if (assert && devsel != 0) {
+               // supress signal to cardbus
+               au_writel( 0x00000002, SYS_OUTPUTCLR ); // set EXT_IO3 OFF
+       }
+       else {
+               au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
+       }
+       au_sync_udelay(1);
+       return 1;
+}
+

arch/mips/au1000/mtx-1/irqmap.c

@@ -48 +48 @@
 #include <asm/mach-au1x00/au1000.h>
 
 char irq_tab_alchemy[][5] __initdata = {
- [0] = { -1, INTA, INTB, INTX, INTX},   /* IDSEL 00 - AdapterA-Slot0 (top)    */
+ [0] = { -1, INTA, INTA, INTX, INTX},   /* IDSEL 00 - AdapterA-Slot0 (top)    */
  [1] = { -1, INTB, INTA, INTX, INTX},   /* IDSEL 01 - AdapterA-Slot1 (bottom) */
  [2] = { -1, INTC, INTD, INTX, INTX},   /* IDSEL 02 - AdapterB-Slot0 (top)    */
  [3] = { -1, INTD, INTC, INTX, INTX},   /* IDSEL 03 - AdapterB-Slot1 (bottom) */