openwrt/target/linux/brcm47xx/patches-3.6/237-bcma-bcm4716-bcm4748-i2s-irqflag.patch

--- a/include/linux/bcma/bcma_driver_mips.h
+++ b/include/linux/bcma/bcma_driver_mips.h
@@ -28,6 +28,7 @@
 #define BCMA_MIPS_MIPS74K_GPIOEN	0x0048
 #define BCMA_MIPS_MIPS74K_CLKCTLST	0x01E0
 
+#define BCMA_MIPS_OOBSELINA74		0x004
 #define BCMA_MIPS_OOBSELOUTA30		0x100
 
 struct bcma_device;
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -273,6 +273,32 @@ void bcma_core_mips_early_init(struct bc
 	mcore->early_setup_done = true;
 }
 
+static void bcma_fix_i2s_irqflag(struct bcma_bus *bus)
+{
+	struct bcma_device *cpu, *pcie, *i2s;
+
+	/* Fixup the interrupts in 4716/4748 for i2s core (2010 Broadcom SDK)
+	 * (IRQ flags > 7 are ignored when setting the interrupt masks)
+	 */
+	if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4716 &&
+	    bus->chipinfo.id != BCMA_CHIP_ID_BCM4748)
+		return;
+
+	cpu = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
+	pcie = bcma_find_core(bus, BCMA_CORE_PCIE);
+	i2s = bcma_find_core(bus, BCMA_CORE_I2S);
+	if ((cpu && pcie && i2s) &&
+	    (bcma_aread32(cpu, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
+	     bcma_aread32(pcie, BCMA_MIPS_OOBSELINA74) == 0x08060504 &&
+	     bcma_aread32(i2s, BCMA_MIPS_OOBSELOUTA30) == 0x88)) {
+		bcma_awrite32(cpu, BCMA_MIPS_OOBSELINA74, 0x07060504);
+		bcma_awrite32(pcie, BCMA_MIPS_OOBSELINA74, 0x07060504);
+		bcma_awrite32(i2s, BCMA_MIPS_OOBSELOUTA30, 0x87);
+		bcma_info(bus,
+			  "Moved i2s interrupt to oob line 7 instead of 8\n");
+	}
+}
+
 void bcma_core_mips_init(struct bcma_drv_mips *mcore)
 {
 	struct bcma_bus *bus;
@@ -286,6 +312,8 @@ void bcma_core_mips_init(struct bcma_drv
 
 	bcma_core_mips_early_init(mcore);
 
+	bcma_fix_i2s_irqflag(bus);
+
 	switch (bus->chipinfo.id) {
 	case BCMA_CHIP_ID_BCM4716:
 	case BCMA_CHIP_ID_BCM4748: