commit 08ccf57283f89adbc2ff897ad82d6ad4560db7cd
author Hauke Mehrtens <hauke@hauke-m.de> Sat Jul 23 01:20:12 2011 +0200
committer John W. Linville <linville@tuxdriver.com> Mon Aug 08 14:29:30 2011 -0400
tree 11d715ac33eab75e57a8e62b0b7d822e316a9145
parent 908debc8da0d5a91418f71c6a462f62bd2ac69ef

bcm47xx: prepare to support different buses

Prepare bcm47xx to support different System buses. Before adding
support for bcma it should be possible to build bcm47xx without the
need of ssb. With this patch bcm47xx does not directly contain a
ssb_bus, but a union contain all the supported system buses. As a SoC
just uses one system bus a union is a good choice.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

arch/mips/bcm47xx/setup.c

diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index cfae815..271cedb 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -35,15 +35,22 @@
 #include <bcm47xx.h>
 #include <asm/mach-bcm47xx/nvram.h>
 
-struct ssb_bus ssb_bcm47xx;
-EXPORT_SYMBOL(ssb_bcm47xx);
+union bcm47xx_bus bcm47xx_bus;
+EXPORT_SYMBOL(bcm47xx_bus);
+
+enum bcm47xx_bus_type bcm47xx_bus_type;
+EXPORT_SYMBOL(bcm47xx_bus_type);
 
 static void bcm47xx_machine_restart(char *command)
 {
 	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
 	local_irq_disable();
 	/* Set the watchdog timer to reset immediately */
-	ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
+	switch (bcm47xx_bus_type) {
+	case BCM47XX_BUS_TYPE_SSB:
+		ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
+		break;
+	}
 	while (1)
 		cpu_relax();
 }
@@ -52,7 +59,11 @@
 {
 	/* Disable interrupts and watchdog and spin forever */
 	local_irq_disable();
-	ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
+	switch (bcm47xx_bus_type) {
+	case BCM47XX_BUS_TYPE_SSB:
+		ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
+		break;
+	}
 	while (1)
 		cpu_relax();
 }
@@ -247,7 +258,7 @@
 	return 0;
 }
 
-void __init plat_mem_setup(void)
+static void __init bcm47xx_register_ssb(void)
 {
 	int err;
 	char buf[100];
@@ -258,12 +269,12 @@
 		printk(KERN_WARNING "bcm47xx: someone else already registered"
 			" a ssb SPROM callback handler (err %d)\n", err);
 
-	err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
+	err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
 				      bcm47xx_get_invariants);
 	if (err)
 		panic("Failed to initialize SSB bus (err %d)\n", err);
 
-	mcore = &ssb_bcm47xx.mipscore;
+	mcore = &bcm47xx_bus.ssb.mipscore;
 	if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 		if (strstr(buf, "console=ttyS1")) {
 			struct ssb_serial_port port;
@@ -276,6 +287,14 @@
 			memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 		}
 	}
+}
+
+void __init plat_mem_setup(void)
+{
+	struct cpuinfo_mips *c = &current_cpu_data;
+
+	bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
+	bcm47xx_register_ssb();
 
 	_machine_restart = bcm47xx_machine_restart;
 	_machine_halt = bcm47xx_machine_halt;