MIPS: RBTX4939: Add smc91x support

Add smc91x platform device to RBTX4939 board and some hacks for big endian.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 58 insertions, 0 deletions

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 5526375010f8..18086c549573 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -622,6 +622,21 @@ unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
 EXPORT_SYMBOL(__swizzle_addr_b);
 #endif
 
+#ifdef NEEDS_TXX9_IOSWABW
+static u16 ioswabw_default(volatile u16 *a, u16 x)
+{
+        return le16_to_cpu(x);
+}
+static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
+{
+        return x;
+}
+u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
+EXPORT_SYMBOL(ioswabw);
+u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
+EXPORT_SYMBOL(__mem_ioswabw);
+#endif
+
 void __init txx9_physmap_flash_init(int no, unsigned long addr,
                                     unsigned long size,
                                     const struct physmap_flash_data *pdata)
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index c88517774910..6daee9b1cd5e 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -14,6 +14,8 @@
 #include <linux/types.h>
 #include <linux/platform_device.h>
 #include <linux/leds.h>
+#include <linux/interrupt.h>
+#include <linux/smc91x.h>
 #include <asm/reboot.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
@@ -33,6 +35,21 @@ static void __init rbtx4939_time_init(void)
         tx4939_time_init(0);
 }
 
+#if defined(__BIG_ENDIAN) && \
+        (defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE))
+#define HAVE_RBTX4939_IOSWAB
+#define IS_CE1_ADDR(addr) \
+        ((((unsigned long)(addr) - IO_BASE) & 0xfff00000) == TXX9_CE(1))
+static u16 rbtx4939_ioswabw(volatile u16 *a, u16 x)
+{
+        return IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
+}
+static u16 rbtx4939_mem_ioswabw(volatile u16 *a, u16 x)
+{
+        return !IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
+}
+#endif /* __BIG_ENDIAN && CONFIG_SMC91X */
+
 static void __init rbtx4939_pci_setup(void)
 {
 #ifdef CONFIG_PCI
@@ -272,6 +289,22 @@ static void __init rbtx4939_arch_init(void)
 
 static void __init rbtx4939_device_init(void)
 {
+        unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
+        struct resource smc_res[] = {
+                {
+                        .start  = smc_addr,
+                        .end    = smc_addr + 0x10 - 1,
+                        .flags  = IORESOURCE_MEM,
+                }, {
+                        .start  = RBTX4939_IRQ_ETHER,
+                        /* override default irq flag defined in smc91x.h */
+                        .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
+                },
+        };
+        struct smc91x_platdata smc_pdata = {
+                .flags = SMC91X_USE_16BIT,
+        };
+        struct platform_device *pdev;
 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
         int i, j;
         unsigned char ethaddr[2][6];
@@ -288,6 +321,12 @@ static void __init rbtx4939_device_init(void)
         }
         tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
 #endif
+        pdev = platform_device_alloc("smc91x", -1);
+        if (!pdev ||
+            platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
+            platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
+            platform_device_add(pdev))
+                platform_device_put(pdev);
         rbtx4939_led_setup();
         tx4939_wdt_init();
         tx4939_ata_init();
@@ -304,6 +343,10 @@ static void __init rbtx4939_setup(void)
         if (txx9_master_clock == 0)
                 txx9_master_clock = 20000000;
         tx4939_setup();
+#ifdef HAVE_RBTX4939_IOSWAB
+        ioswabw = rbtx4939_ioswabw;
+        __mem_ioswabw = rbtx4939_mem_ioswabw;
+#endif
 
         _machine_restart = rbtx4939_machine_restart;