bcm47xx: make it possible to build bcm47xx without ssb.

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>

11 files changed, 67 insertions, 8 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 177cdaf83564..0dbb4edc2dd1 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -91,15 +91,8 @@ config BCM47XX
         select DMA_NONCOHERENT
         select HW_HAS_PCI
         select IRQ_CPU
-        select SYS_HAS_CPU_MIPS32_R1
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
-        select SSB
-        select SSB_DRIVER_MIPS
-        select SSB_DRIVER_EXTIF
-        select SSB_EMBEDDED
-        select SSB_B43_PCI_BRIDGE if PCI
-        select SSB_PCICORE_HOSTMODE if PCI
         select GENERIC_GPIO
         select SYS_HAS_EARLY_PRINTK
         select CFE
@@ -788,6 +781,7 @@ endchoice
 
 source "arch/mips/alchemy/Kconfig"
 source "arch/mips/ath79/Kconfig"
+source "arch/mips/bcm47xx/Kconfig"
 source "arch/mips/bcm63xx/Kconfig"
 source "arch/mips/jazz/Kconfig"
 source "arch/mips/jz4740/Kconfig"
diff --git a/arch/mips/bcm47xx/Kconfig b/arch/mips/bcm47xx/Kconfig
new file mode 100644
index 000000000000..0346f92d12a2
--- /dev/null
+++ b/arch/mips/bcm47xx/Kconfig
@@ -0,0 +1,18 @@
+if BCM47XX
+
+config BCM47XX_SSB
+        bool "SSB Support for Broadcom BCM47XX"
+        select SYS_HAS_CPU_MIPS32_R1
+        select SSB
+        select SSB_DRIVER_MIPS
+        select SSB_DRIVER_EXTIF
+        select SSB_EMBEDDED
+        select SSB_B43_PCI_BRIDGE if PCI
+        select SSB_PCICORE_HOSTMODE if PCI
+        default y
+        help
+         Add support for old Broadcom BCM47xx boards with Sonics Silicon Backplane support.
+
+         This will generate an image with support for SSB and MIPS32 R1 instruction set.
+
+endif
diff --git a/arch/mips/bcm47xx/Makefile b/arch/mips/bcm47xx/Makefile
index 7465e8a72d9a..4add17349ff9 100644
--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -3,4 +3,5 @@
 # under Linux.
 #
 
-obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o wgt634u.o
+obj-y                           += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o
+obj-$(CONFIG_BCM47XX_SSB)       += wgt634u.o
diff --git a/arch/mips/bcm47xx/gpio.c b/arch/mips/bcm47xx/gpio.c
index 99e1c50caf6b..2b804c36750b 100644
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -21,6 +21,7 @@ static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES);
 int gpio_request(unsigned gpio, const char *tag)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
                     ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
@@ -34,6 +35,7 @@ int gpio_request(unsigned gpio, const char *tag)
                         return -EBUSY;
 
                 return 0;
+#endif
         }
         return -EINVAL;
 }
@@ -42,6 +44,7 @@ EXPORT_SYMBOL(gpio_request);
 void gpio_free(unsigned gpio)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) &&
                     ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
@@ -53,6 +56,7 @@ void gpio_free(unsigned gpio)
 
                 clear_bit(gpio, gpio_in_use);
                 return;
+#endif
         }
 }
 EXPORT_SYMBOL(gpio_free);
@@ -60,6 +64,7 @@ EXPORT_SYMBOL(gpio_free);
 int gpio_to_irq(unsigned gpio)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco))
                         return ssb_mips_irq(bcm47xx_bus.ssb.chipco.dev) + 2;
@@ -67,6 +72,7 @@ int gpio_to_irq(unsigned gpio)
                         return ssb_mips_irq(bcm47xx_bus.ssb.extif.dev) + 2;
                 else
                         return -EINVAL;
+#endif
         }
         return -EINVAL;
 }
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
index bcac2ffd1248..4e994edb1425 100644
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -26,7 +26,9 @@ static char nvram_buf[NVRAM_SPACE];
 /* Probe for NVRAM header */
 static void early_nvram_init(void)
 {
+#ifdef CONFIG_BCM47XX_SSB
         struct ssb_mipscore *mcore_ssb;
+#endif
         struct nvram_header *header;
         int i;
         u32 base = 0;
@@ -35,11 +37,13 @@ static void early_nvram_init(void)
         u32 *src, *dst;
 
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 mcore_ssb = &bcm47xx_bus.ssb.mipscore;
                 base = mcore_ssb->flash_window;
                 lim = mcore_ssb->flash_window_size;
                 break;
+#endif
         }
 
         off = FLASH_MIN;
diff --git a/arch/mips/bcm47xx/serial.c b/arch/mips/bcm47xx/serial.c
index 17c67e24b549..fcef68836979 100644
--- a/arch/mips/bcm47xx/serial.c
+++ b/arch/mips/bcm47xx/serial.c
@@ -23,6 +23,7 @@ static struct platform_device uart8250_device = {
         },
 };
 
+#ifdef CONFIG_BCM47XX_SSB
 static int __init uart8250_init_ssb(void)
 {
         int i;
@@ -44,12 +45,15 @@ static int __init uart8250_init_ssb(void)
         }
         return platform_device_register(&uart8250_device);
 }
+#endif
 
 static int __init uart8250_init(void)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 return uart8250_init_ssb();
+#endif
         }
         return -EINVAL;
 }
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 271cedb339ae..142cf1bc8884 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -47,9 +47,11 @@ static void bcm47xx_machine_restart(char *command)
         local_irq_disable();
         /* Set the watchdog timer to reset immediately */
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
                 break;
+#endif
         }
         while (1)
                 cpu_relax();
@@ -60,14 +62,17 @@ static void bcm47xx_machine_halt(void)
         /* Disable interrupts and watchdog and spin forever */
         local_irq_disable();
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
                 break;
+#endif
         }
         while (1)
                 cpu_relax();
 }
 
+#ifdef CONFIG_BCM47XX_SSB
 #define READ_FROM_NVRAM(_outvar, name, buf) \
         if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
@@ -288,13 +293,16 @@ static void __init bcm47xx_register_ssb(void)
                 }
         }
 }
+#endif
 
 void __init plat_mem_setup(void)
 {
         struct cpuinfo_mips *c = &current_cpu_data;
 
+#ifdef CONFIG_BCM47XX_SSB
         bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
         bcm47xx_register_ssb();
+#endif
 
         _machine_restart = bcm47xx_machine_restart;
         _machine_halt = bcm47xx_machine_halt;
diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c
index 50aea2e1808c..03dfc65b1b60 100644
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -40,9 +40,11 @@ void __init plat_time_init(void)
         write_c0_compare(0xffff);
 
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2;
                 break;
+#endif
         }
 
         if (!hz)
diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
index 7cf481bb1a05..d037afb6677e 100644
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
@@ -22,11 +22,15 @@
 #include <linux/ssb/ssb.h>
 
 enum bcm47xx_bus_type {
+#ifdef CONFIG_BCM47XX_SSB
         BCM47XX_BUS_TYPE_SSB,
+#endif
 };
 
 union bcm47xx_bus {
+#ifdef CONFIG_BCM47XX_SSB
         struct ssb_bus ssb;
+#endif
 };
 
 extern union bcm47xx_bus bcm47xx_bus;
diff --git a/arch/mips/include/asm/mach-bcm47xx/gpio.h b/arch/mips/include/asm/mach-bcm47xx/gpio.h
index 6b78827dd140..1d5f5af56b5f 100644
--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
@@ -22,8 +22,10 @@ extern int gpio_to_irq(unsigned gpio);
 static inline int gpio_get_value(unsigned gpio)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 return ssb_gpio_in(&bcm47xx_bus.ssb, 1 << gpio);
+#endif
         }
         return -EINVAL;
 }
@@ -31,18 +33,22 @@ static inline int gpio_get_value(unsigned gpio)
 static inline void gpio_set_value(unsigned gpio, int value)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
                              value ? 1 << gpio : 0);
+#endif
         }
 }
 
 static inline int gpio_direction_input(unsigned gpio)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 0);
                 return 0;
+#endif
         }
         return -EINVAL;
 }
@@ -50,6 +56,7 @@ static inline int gpio_direction_input(unsigned gpio)
 static inline int gpio_direction_output(unsigned gpio, int value)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 /* first set the gpio out value */
                 ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
@@ -57,6 +64,7 @@ static inline int gpio_direction_output(unsigned gpio, int value)
                 /* then set the gpio mode */
                 ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 1 << gpio);
                 return 0;
+#endif
         }
         return -EINVAL;
 }
@@ -64,10 +72,12 @@ static inline int gpio_direction_output(unsigned gpio, int value)
 static inline int gpio_intmask(unsigned gpio, int value)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_gpio_intmask(&bcm47xx_bus.ssb, 1 << gpio,
                                  value ? 1 << gpio : 0);
                 return 0;
+#endif
         }
         return -EINVAL;
 }
@@ -75,10 +85,12 @@ static inline int gpio_intmask(unsigned gpio, int value)
 static inline int gpio_polarity(unsigned gpio, int value)
 {
         switch (bcm47xx_bus_type) {
+#ifdef CONFIG_BCM47XX_SSB
         case BCM47XX_BUS_TYPE_SSB:
                 ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << gpio,
                                   value ? 1 << gpio : 0);
                 return 0;
+#endif
         }
         return -EINVAL;
 }
diff --git a/arch/mips/pci/pci-bcm47xx.c b/arch/mips/pci/pci-bcm47xx.c
index 455f8e50a007..400535a955d0 100644
--- a/arch/mips/pci/pci-bcm47xx.c
+++ b/arch/mips/pci/pci-bcm47xx.c
@@ -25,6 +25,7 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/ssb/ssb.h>
+#include <bcm47xx.h>
 
 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
@@ -33,9 +34,13 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 int pcibios_plat_dev_init(struct pci_dev *dev)
 {
+#ifdef CONFIG_BCM47XX_SSB
         int res;
         u8 slot, pin;
 
+        if (bcm47xx_bus_type !=  BCM47XX_BUS_TYPE_SSB)
+                return 0;
+
         res = ssb_pcibios_plat_dev_init(dev);
         if (res < 0) {
                 printk(KERN_ALERT "PCI: Failed to init device %s\n",
@@ -55,5 +60,6 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
         }
 
         dev->irq = res;
+#endif
         return 0;
 }