dsa/mv88e6131: add support for mv88e6085 switch

The mv88e6085 is identical to the mv88e6095, except that all ports are
10/100 Mb/s, so use the existing setup code except for the cpu/dsa speed
selection in _setup_port().

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 21 insertions, 4 deletions

diff --git a/net/dsa/mv88e6131.c b/net/dsa/mv88e6131.c
index bb2b41bc854e..a8e4f8c7dca4 100644
--- a/net/dsa/mv88e6131.c
+++ b/net/dsa/mv88e6131.c
@@ -14,6 +14,13 @@
 #include "dsa_priv.h"
 #include "mv88e6xxx.h"
 
+/*
+ * Switch product IDs
+ */
+#define ID_6085         0x04a0
+#define ID_6095         0x0950
+#define ID_6131         0x1060
+
 static char *mv88e6131_probe(struct mii_bus *bus, int sw_addr)
 {
         int ret;
@@ -21,9 +28,11 @@ static char *mv88e6131_probe(struct mii_bus *bus, int sw_addr)
         ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
         if (ret >= 0) {
                 ret &= 0xfff0;
-                if (ret == 0x0950)
+                if (ret == ID_6085)
+                        return "Marvell 88E6085";
+                if (ret == ID_6095)
                         return "Marvell 88E6095/88E6095F";
-                if (ret == 0x1060)
+                if (ret == ID_6131)
                         return "Marvell 88E6131";
         }
 
@@ -164,6 +173,7 @@ static int mv88e6131_setup_global(struct dsa_switch *ds)
 
 static int mv88e6131_setup_port(struct dsa_switch *ds, int p)
 {
+        struct mv88e6xxx_priv_state *ps = (void *)(ds + 1);
         int addr = REG_PORT(p);
         u16 val;
 
@@ -171,10 +181,13 @@ static int mv88e6131_setup_port(struct dsa_switch *ds, int p)
          * MAC Forcing register: don't force link, speed, duplex
          * or flow control state to any particular values on physical
          * ports, but force the CPU port and all DSA ports to 1000 Mb/s
-         * full duplex.
+         * (100 Mb/s on 6085) full duplex.
          */
         if (dsa_is_cpu_port(ds, p) || ds->dsa_port_mask & (1 << p))
-                REG_WRITE(addr, 0x01, 0x003e);
+                if (ps->id == ID_6085)
+                        REG_WRITE(addr, 0x01, 0x003d); /* 100 Mb/s */
+                else
+                        REG_WRITE(addr, 0x01, 0x003e); /* 1000 Mb/s */
         else
                 REG_WRITE(addr, 0x01, 0x0003);
 
@@ -286,6 +299,8 @@ static int mv88e6131_setup(struct dsa_switch *ds)
         mv88e6xxx_ppu_state_init(ds);
         mutex_init(&ps->stats_mutex);
 
+        ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0;
+
         ret = mv88e6131_switch_reset(ds);
         if (ret < 0)
                 return ret;
diff --git a/net/dsa/mv88e6xxx.h b/net/dsa/mv88e6xxx.h
index eb0e0aaa9f1b..61156ca26a0d 100644
--- a/net/dsa/mv88e6xxx.h
+++ b/net/dsa/mv88e6xxx.h
@@ -39,6 +39,8 @@ struct mv88e6xxx_priv_state {
          * Hold this mutex over snapshot + dump sequences.
          */
         struct mutex    stats_mutex;
+
+        int             id; /* switch product id */
 };
 
 struct mv88e6xxx_hw_stat {