SH: pci-sh7780: enable big-endian operation.

If in big-endian mode, switch the PCI bus, too.

Tested on both litte-endian and big-endian sh7785lcr.

Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 12 insertions, 3 deletions

diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c
index fb8f14990743..5a6dab6e27d9 100644
--- a/arch/sh/drivers/pci/pci-sh7780.c
+++ b/arch/sh/drivers/pci/pci-sh7780.c
@@ -21,6 +21,13 @@
 #include <asm/mmu.h>
 #include <asm/sizes.h>
 
+#if defined(CONFIG_CPU_BIG_ENDIAN)
+# define PCICR_ENDIANNESS SH4_PCICR_BSWP
+#else
+# define PCICR_ENDIANNESS 0
+#endif
+
+
 static struct resource sh7785_pci_resources[] = {
         {
                 .name   = "PCI IO",
@@ -254,7 +261,7 @@ static int __init sh7780_pci_init(void)
         __raw_writel(PCIECR_ENBL, PCIECR);
 
         /* Reset */
-        __raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_PRST,
+        __raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_PRST | PCICR_ENDIANNESS,
                      chan->reg_base + SH4_PCICR);
 
         /*
@@ -290,7 +297,8 @@ static int __init sh7780_pci_init(void)
          * Now throw it in to register initialization mode and
          * start the real work.
          */
-        __raw_writel(SH4_PCICR_PREFIX, chan->reg_base + SH4_PCICR);
+        __raw_writel(SH4_PCICR_PREFIX | PCICR_ENDIANNESS,
+                     chan->reg_base + SH4_PCICR);
 
         memphys = __pa(memory_start);
         memsize = roundup_pow_of_two(memory_end - memory_start);
@@ -380,7 +388,8 @@ static int __init sh7780_pci_init(void)
          * Initialization mode complete, release the control register and
          * enable round robin mode to stop device overruns/starvation.
          */
-        __raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO,
+        __raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO |
+                     PCICR_ENDIANNESS,
                      chan->reg_base + SH4_PCICR);
 
         ret = register_pci_controller(chan);