ip17xx: Introduce indirection of low-level operations
[openwrt.git] / target / linux / generic-2.6 / files / drivers / net / phy / ip175c.c
index c561861..d911c86 100644 (file)
@@ -28,6 +28,7 @@
 
 #define MAX_VLANS 16
 #define MAX_PORTS 9
+#undef DUMP_MII_IO
 
 typedef struct ip175c_reg {
        u16 p;                  // phy
@@ -39,10 +40,12 @@ typedef char bitnum;
 
 #define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
 
+struct ip175c_state;
+
 /*********** CONSTANTS ***********/
 struct register_mappings {
        char *NAME;
-       u16 MODEL_NO;                   // compare to bits 4-9 of MII register 0,3.
+       u16 MODEL_NO;                   // Compare to bits 4-9 of MII register 0,3.
        bitnum NUM_PORTS;
        bitnum CPU_PORT;
 
@@ -95,8 +98,21 @@ struct register_mappings {
 
        // set to 1 for 178C, 0 for 175C.
        bitnum SIMPLE_VLAN_REGISTERS;   // 175C has two vlans per register but 178C has only one.
+
+       // Pointers to functions which manipulate hardware state
+       int (*get_flags)(struct ip175c_state *state);
+       int (*get_state)(struct ip175c_state *state);
+       int (*update_state)(struct ip175c_state *state);
+       int (*set_vlan_mode)(struct ip175c_state *state);
+       int (*reset)(struct ip175c_state *state);
 };
 
+static int ip175c_get_flags(struct ip175c_state *state);
+static int ip175c_get_state(struct ip175c_state *state);
+static int ip175c_update_state(struct ip175c_state *state);
+static int ip175c_set_vlan_mode(struct ip175c_state *state);
+static int ip175c_do_reset(struct ip175c_state *state);
+
 static const struct register_mappings IP178C = {
        .NAME = "IP178C",
        .MODEL_NO = 0x18,
@@ -139,6 +155,11 @@ static const struct register_mappings IP178C = {
 
        .MII_REGISTER_EN = NOTSUPPORTED,
 
+       .get_flags = ip175c_get_flags,
+       .get_state = ip175c_get_state,
+       .update_state = ip175c_update_state,
+       .set_vlan_mode = ip175c_set_vlan_mode,
+       .reset = ip175c_do_reset,
 };
 
 static const struct register_mappings IP175C = {
@@ -183,6 +204,11 @@ static const struct register_mappings IP175C = {
 
        .MII_REGISTER_EN = NOTSUPPORTED,
 
+       .get_flags = ip175c_get_flags,
+       .get_state = ip175c_get_state,
+       .update_state = ip175c_update_state,
+       .set_vlan_mode = ip175c_set_vlan_mode,
+       .reset = ip175c_do_reset,
 };
 
 static const struct register_mappings IP175A = {
@@ -195,20 +221,20 @@ static const struct register_mappings IP175A = {
 
        .ADD_TAG_REG = {0,23},
        .REMOVE_TAG_REG = {0,23},
-       .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
-       .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
+       .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
+       .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
 
-       .SIMPLE_VLAN_REGISTERS = 1,
+       .SIMPLE_VLAN_REGISTERS = 0,
 
-       // Only programmable via. EEPROM
+       // Only programmable via EEPROM
        .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
        .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
-       .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
-       .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
+       .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
+       .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
 
-       .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2
-       .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
-       .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
+       .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
+       .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
+       .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 
        .RESET_VAL = -1,
        .RESET_REG = NOTSUPPORTED,
@@ -222,13 +248,20 @@ static const struct register_mappings IP175A = {
        .NUMLAN_GROUPS_MAX = -1,
        .NUMLAN_GROUPS_BIT = -1, // {0-2}
 
-       .NUM_PORTS = 6,
-       .CPU_PORT = 5,
+       .NUM_PORTS = 5,
+       .CPU_PORT = 4,
 
-       .MII_REGISTER_EN = {0, 12},
+       .MII_REGISTER_EN = {0, 18},
        .MII_REGISTER_EN_BIT = 7,
+
+       .get_flags = ip175c_get_flags,
+       .get_state = ip175c_get_state,
+       .update_state = ip175c_update_state,
+       .set_vlan_mode = ip175c_set_vlan_mode,
+       .reset = ip175c_do_reset,
 };
 
+
 struct ip175c_state {
        struct switch_dev dev;
        struct mii_bus *mii_bus;
@@ -245,68 +278,66 @@ struct ip175c_state {
        int num_vlans;
        unsigned int vlan_ports[MAX_VLANS];
        const struct register_mappings *regs;
-       reg proc_mii; /*!< phy/reg for the low level register access via /proc */
+       reg proc_mii;   // phy/reg for the low level register access via swconfig
 
        char buf[80];
 };
 
-static int ip_phy_read(struct mii_bus *bus, int port, int reg)
-{
-       int val;
-
-       mutex_lock(&bus->mdio_lock);
-       val = bus->read(bus, port, reg);
-       mutex_unlock(&bus->mdio_lock);
 
+static int ip_phy_read(struct ip175c_state *state, int port, int reg)
+{
+       int val = mdiobus_read(state->mii_bus, port, reg);
+       if (val < 0)
+               pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
+#ifdef DUMP_MII_IO
+       else
+               pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
+#endif
        return val;
 }
 
-
-static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
+static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
 {
        int err;
 
-       mutex_lock(&bus->mdio_lock);
-       err = bus->write(bus, port, reg, val);
-       mutex_unlock(&bus->mdio_lock);
-
+#ifdef DUMP_MII_IO
+       pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
+#endif
+       err = mdiobus_write(state->mii_bus, port, reg, val);
+       if (err < 0)
+               pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
        return err;
 }
 
-
-static int getPhy (struct ip175c_state *state, reg mii)
+static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
 {
-       struct mii_bus *bus = state->mii_bus;
-       int val;
+       int val = ip_phy_read(state, port, reg);
+       if (val < 0)
+               return 0;
+       return ip_phy_write(state, port, reg, (val & ~mask) | data);
+}
 
+static int getPhy(struct ip175c_state *state, reg mii)
+{
        if (!REG_SUPP(mii))
                return -EFAULT;
-
-       val = ip_phy_read(bus, mii.p, mii.m);
-       if (val < 0)
-               pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
-
-       return val;
+       return ip_phy_read(state, mii.p, mii.m);
 }
 
-static int setPhy (struct ip175c_state *state, reg mii, u16 value)
+static int setPhy(struct ip175c_state *state, reg mii, u16 value)
 {
-       struct mii_bus *bus = state->mii_bus;
        int err;
 
        if (!REG_SUPP(mii))
                return -EFAULT;
-
-       err = ip_phy_write(bus, mii.p, mii.m, value);
-       if (err < 0) {
-               pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
+       err = ip_phy_write(state, mii.p, mii.m, value);
+       if (err < 0)
                return err;
-       }
-       mdelay(2);
        getPhy(state, mii);
        return 0;
 }
 
+
 /**
  * These two macros are to simplify the mapping of logical bits to the bits in hardware.
  * NOTE: these macros will return if there is an error!
@@ -341,6 +372,7 @@ static int setPhy (struct ip175c_state *state, reg mii, u16 value)
                        return val;                             \
        } while (0)
 
+
 static int get_model(struct ip175c_state *state)
 {
        reg oui_id_reg = {0, 2};
@@ -384,7 +416,7 @@ static int get_model(struct ip175c_state *state)
 }
 
 /** Get only the vlan and router flags on the router **/
-static int get_flags(struct ip175c_state *state)
+static int ip175c_get_flags(struct ip175c_state *state)
 {
        int val;
 
@@ -409,7 +441,6 @@ static int get_flags(struct ip175c_state *state)
                state->num_vlans+=1; // does not include WAN.
        }
 
-
        val = getPhy(state, state->regs->VLAN_CONTROL_REG);
        if (val < 0) {
                return 0;
@@ -419,15 +450,18 @@ static int get_flags(struct ip175c_state *state)
 
        return  0;
 }
-/** Get all state variables for VLAN mappings and port-based tagging. **/
-static int get_state(struct ip175c_state *state)
+
+/** Get all state variables for VLAN mappings and port-based tagging **/
+static int ip175c_get_state(struct ip175c_state *state)
 {
        int i, j;
        int ret;
-       ret = get_flags(state);
+
+       ret = ip175c_get_flags(state);
        if (ret < 0) {
                return ret;
        }
+
        GET_PORT_BITS(state, state->remove_tag,
                                  state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
        GET_PORT_BITS(state, state->add_tag,
@@ -435,43 +469,43 @@ static int get_state(struct ip175c_state *state)
 
        if (state->vlan_enabled == -1) {
                // not sure how to get this...
-               state->vlan_enabled = (!state->remove_tag && !state->add_tag);
+               state->vlan_enabled = (state->remove_tag || state->add_tag);
        }
 
        if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
-       for (j=0; j<MAX_PORTS; j++) {
-               state->ports[j].shareports = 0; // initialize them in case.
-       }
-       for (j=0; j<state->regs->NUM_PORTS; j++) {
-               reg addr;
-               const bitnum *bit_lookup = (j%2==0)?
-                       state->regs->VLAN_LOOKUP_EVEN_BIT:
-                       state->regs->VLAN_LOOKUP_ODD_BIT;
-               addr = state->regs->VLAN_LOOKUP_REG;
-               if (state->regs->SIMPLE_VLAN_REGISTERS) {
-                       addr.m += j;
-               } else {
-                       switch (j) {
-                       case 0:
-                       case 1:
-                               break;
-                       case 2:
-                       case 3:
-                               addr.m+=1;
-                               break;
-                       case 4:
-                               addr.m+=2;
-                               break;
-                       case 5:
-                               addr = state->regs->VLAN_LOOKUP_REG_5;
-                               break;
-                       }
+               for (j=0; j<MAX_PORTS; j++) {
+                       state->ports[j].shareports = 0; // initialize them in case.
                }
+               for (j=0; j<state->regs->NUM_PORTS; j++) {
+                       reg addr;
+                       const bitnum *bit_lookup = (j%2==0)?
+                               state->regs->VLAN_LOOKUP_EVEN_BIT:
+                               state->regs->VLAN_LOOKUP_ODD_BIT;
+                       addr = state->regs->VLAN_LOOKUP_REG;
+                       if (state->regs->SIMPLE_VLAN_REGISTERS) {
+                               addr.m += j;
+                       } else {
+                               switch (j) {
+                               case 0:
+                               case 1:
+                                       break;
+                               case 2:
+                               case 3:
+                                       addr.m+=1;
+                                       break;
+                               case 4:
+                                       addr.m+=2;
+                                       break;
+                               case 5:
+                                       addr = state->regs->VLAN_LOOKUP_REG_5;
+                                       break;
+                               }
+                       }
 
-               if (REG_SUPP(addr)) {
-                       GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
+                       if (REG_SUPP(addr)) {
+                               GET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
+                       }
                }
-       }
        } else {
                for (j=0; j<MAX_PORTS; j++) {
                        state->ports[j].shareports = 0xff;
@@ -518,9 +552,8 @@ static int get_state(struct ip175c_state *state)
        return 0;
 }
 
-
-/** Only update vlan and router flags in the switch **/
-static int update_flags(struct ip175c_state *state)
+/** Only set vlan and router flags in the switch **/
+static int ip175c_set_flags(struct ip175c_state *state)
 {
        int val;
 
@@ -557,8 +590,8 @@ static int update_flags(struct ip175c_state *state)
        return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
 }
 
-/** Update all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
-static int update_state(struct ip175c_state *state)
+/** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
+static int ip175c_set_state(struct ip175c_state *state)
 {
        int j;
        int i;
@@ -568,57 +601,57 @@ static int update_state(struct ip175c_state *state)
                                  state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 
        if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
-       for (j=0; j<state->regs->NUM_PORTS; j++) {
-               reg addr;
-               const bitnum *bit_lookup = (j%2==0)?
-                       state->regs->VLAN_LOOKUP_EVEN_BIT:
-                       state->regs->VLAN_LOOKUP_ODD_BIT;
-
-               // duplicate code -- sorry
-               addr = state->regs->VLAN_LOOKUP_REG;
-               if (state->regs->SIMPLE_VLAN_REGISTERS) {
-                       addr.m += j;
-               } else {
-                       switch (j) {
-                       case 0:
-                       case 1:
-                               break;
-                       case 2:
-                       case 3:
-                               addr.m+=1;
-                               break;
-                       case 4:
-                               addr.m+=2;
-                               break;
-                       case 5:
-                               addr = state->regs->VLAN_LOOKUP_REG_5;
-                               break;
-                       default:
-                               addr.m = -1; // shouldn't get here, but...
-                               break;
+               for (j=0; j<state->regs->NUM_PORTS; j++) {
+                       reg addr;
+                       const bitnum *bit_lookup = (j%2==0)?
+                               state->regs->VLAN_LOOKUP_EVEN_BIT:
+                               state->regs->VLAN_LOOKUP_ODD_BIT;
+
+                       // duplicate code -- sorry
+                       addr = state->regs->VLAN_LOOKUP_REG;
+                       if (state->regs->SIMPLE_VLAN_REGISTERS) {
+                               addr.m += j;
+                       } else {
+                               switch (j) {
+                               case 0:
+                               case 1:
+                                       break;
+                               case 2:
+                               case 3:
+                                       addr.m+=1;
+                                       break;
+                               case 4:
+                                       addr.m+=2;
+                                       break;
+                               case 5:
+                                       addr = state->regs->VLAN_LOOKUP_REG_5;
+                                       break;
+                               default:
+                                       addr.m = -1; // shouldn't get here, but...
+                                       break;
+                               }
+                       }
+                       //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
+                       if (REG_SUPP(addr)) {
+                               SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
                        }
-               }
-               //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
-               if (REG_SUPP(addr)) {
-                       SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
                }
        }
-       }
        if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
-       for (j=0; j<MAX_VLANS; j++) {
-               reg addr = state->regs->TAG_VLAN_MASK_REG;
-               const bitnum *bit_lookup = (j%2==0)?
-                       state->regs->TAG_VLAN_MASK_EVEN_BIT:
-                       state->regs->TAG_VLAN_MASK_ODD_BIT;
-               unsigned int vlan_mask;
-               if (state->regs->SIMPLE_VLAN_REGISTERS) {
-                       addr.m += j;
-               } else {
-                       addr.m += j/2;
+               for (j=0; j<MAX_VLANS; j++) {
+                       reg addr = state->regs->TAG_VLAN_MASK_REG;
+                       const bitnum *bit_lookup = (j%2==0)?
+                               state->regs->TAG_VLAN_MASK_EVEN_BIT:
+                               state->regs->TAG_VLAN_MASK_ODD_BIT;
+                       unsigned int vlan_mask;
+                       if (state->regs->SIMPLE_VLAN_REGISTERS) {
+                               addr.m += j;
+                       } else {
+                               addr.m += j/2;
+                       }
+                       vlan_mask = state->vlan_ports[j];
+                       SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
                }
-               vlan_mask = state->vlan_ports[j];
-               SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
-       }
        }
 
        for (i=0; i<MAX_PORTS; i++) {
@@ -631,33 +664,27 @@ static int update_state(struct ip175c_state *state)
                }
        }
 
-       return update_flags(state);
-
-       // software reset: 30.0 = 0x175C
-       // wait 2ms
-       // reset ports 0,1,2,3,4
+       return ip175c_set_flags(state);
 }
 
-/*
-  Uses only the VLAN port mask and the add tag mask to generate the other fields:
-  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
+/**
 Uses only the VLAN port mask and the add tag mask to generate the other fields:
 which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
  */
-static void correct_vlan_state(struct ip175c_state *state)
+static void ip175c_correct_vlan_state(struct ip175c_state *state)
 {
        int i, j;
        state->num_vlans = 0;
        for (i=0; i<MAX_VLANS; i++) {
                if (state->vlan_ports[i] != 0) {
-                       state->num_vlans = i+1; //hack -- we need to store the "set" vlans somewhere...
+                       state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
                }
        }
 
-
-
        for (i=0; i<state->regs->NUM_PORTS; i++) {
                unsigned int portmask = (1<<i);
                if (!state->vlan_enabled) {
-                       // share with everybody!
+                       // Share with everybody!
                        state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
                        continue;
                }
@@ -670,12 +697,39 @@ static void correct_vlan_state(struct ip175c_state *state)
        state->remove_tag = ((~state->add_tag) & ((1<<state->regs->NUM_PORTS)-1));
 }
 
+static int ip175c_update_state(struct ip175c_state *state)
+{
+       ip175c_correct_vlan_state(state);
+       return ip175c_set_state(state);
+}
+
+static int ip175c_set_vlan_mode(struct ip175c_state *state)
+{
+       return ip175c_update_state(state);
+}
+
+static int ip175c_do_reset(struct ip175c_state *state)
+{
+       int err;
+
+       if (REG_SUPP(state->regs->MODE_REG)) {
+               err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
+               if (err < 0)
+                       return err;
+               err = getPhy(state, state->regs->MODE_REG);
+               if (err < 0)
+                       return err;
+       }
+
+       return 0;
+}
+
 static int ip175c_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
        int err;
 
-       err = get_state(state); // may be set in get_state.
+       err = state->regs->get_state(state); // May be set in get_state.
        if (err < 0)
                return err;
        val->value.i = state->vlan_enabled;
@@ -689,13 +743,13 @@ static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_at
        int enable;
        int i;
 
-       err = get_state(state);
+       err = state->regs->get_state(state);
        if (err < 0)
                return err;
        enable = val->value.i;
 
        if (state->vlan_enabled == enable) {
-               // do not change any state.
+               // Do not change any state.
                return 0;
        }
        state->vlan_enabled = enable;
@@ -703,19 +757,10 @@ static int ip175c_set_enable_vlan(struct switch_dev *dev, const struct switch_at
        // Otherwise, if we are switching state, set fields to a known default.
        state->remove_tag = 0x0000;
        state->add_tag = 0x0000;
-       for (i = 0; i < MAX_PORTS; i++)
-               state->ports[i].shareports = 0xffff;
-
        for (i = 0; i < MAX_VLANS; i++)
                state->vlan_ports[i] = 0x0;
 
-       if (state->vlan_enabled) {
-               // updates other fields only based off vlan_ports and add_tag fields.
-               // Note that by default, no ports are in any vlans.
-               correct_vlan_state(state);
-       }
-       // ensure sane defaults?
-       return update_state(state);
+       return state->regs->set_vlan_mode(state);
 }
 
 static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
@@ -729,7 +774,7 @@ static int ip175c_get_ports(struct switch_dev *dev, struct switch_val *val)
        if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
                return -EINVAL;
 
-       err = get_state(state);
+       err = state->regs->get_state(state);
        if (err<0)
                return err;
 
@@ -760,7 +805,7 @@ static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
        if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
                return -EINVAL;
 
-       err = get_state(state);
+       err = state->regs->get_state(state);
        if (err < 0)
                return err;
 
@@ -775,10 +820,7 @@ static int ip175c_set_ports(struct switch_dev *dev, struct switch_val *val)
                }
        }
 
-       correct_vlan_state(state);
-       err = update_state(state);
-
-       return err;
+       return state->regs->update_state(state);
 }
 
 static int ip175c_apply(struct switch_dev *dev)
@@ -786,11 +828,11 @@ static int ip175c_apply(struct switch_dev *dev)
        struct ip175c_state *state = dev->priv;
        int err;
 
-       err = get_flags(state);
+       err = state->regs->get_flags(state);
        if (err < 0)
                return err;
 
-       if (REG_SUPP(state->regs->MII_REGISTER_EN)){
+       if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
                int val = getPhy(state, state->regs->MII_REGISTER_EN);
                if (val < 0) {
                        return val;
@@ -806,7 +848,7 @@ static int ip175c_reset(struct switch_dev *dev)
        struct ip175c_state *state = dev->priv;
        int i, err;
 
-       err = get_flags(state);
+       err = state->regs->get_flags(state);
        if (err < 0)
                return err;
 
@@ -816,37 +858,30 @@ static int ip175c_reset(struct switch_dev *dev)
                        return err;
                err = getPhy(state, state->regs->RESET_REG);
 
-               /* data sheet specifies reset period is 2 msec
-                  (don't see any mention of the 2ms delay in the IP178C spec, only
-                   in IP175C, but it can't hurt.) */
+               /*
+                *  Data sheet specifies reset period to be 2 msec.
+                *  (I don't see any mention of the 2ms delay in the IP178C spec, only
+                *  in IP175C, but it can't hurt.)
+                */
                mdelay(2);
        }
 
-       if (REG_SUPP(state->regs->MODE_REG)) {
-               err = setPhy(state, state->regs->MODE_REG, state->regs->RESET_VAL);
-               if (err < 0)
-                       return err;
-               err = getPhy(state, state->regs->MODE_REG);
-       }
-
        /* reset switch ports */
-       for (i = 0; i < 5; i++) {
-               err = state->mii_bus->write(state->mii_bus, i,
-                                        MII_BMCR, BMCR_RESET);
+       for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
+               err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
                if (err < 0)
                        return err;
        }
 
-       return 0;
+       return state->regs->reset(state);
 }
 
-/*! get the current register number */
 static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
        int err;
 
-       err = get_state(state);
+       err = state->regs->get_state(state);
        if (err < 0)
                return err;
 
@@ -864,13 +899,12 @@ static int ip175c_get_tagged(struct switch_dev *dev, const struct switch_attr *a
        return 0;
 }
 
-/*! set a new register address for low level access to registers */
 static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
        int err;
 
-       err = get_state(state);
+       err = state->regs->get_state(state);
        if (err < 0)
                return err;
 
@@ -882,18 +916,10 @@ static int ip175c_set_tagged(struct switch_dev *dev, const struct switch_attr *a
        if (val->value.i == 1)
                state->add_tag |= (1<<val->port_vlan);
 
-       SET_PORT_BITS(state, state->add_tag,
-                                 state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
-       SET_PORT_BITS(state, state->remove_tag,
-                                 state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
-
-       return err;
+       return state->regs->update_state(state);
 }
 
-
-/* low level /proc procedures */
-
-/*! get the current phy address */
+/** Get the current phy address */
 static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
@@ -902,7 +928,7 @@ static int ip175c_get_phy(struct switch_dev *dev, const struct switch_attr *attr
        return 0;
 }
 
-/*! set a new phy address for low level access to registers */
+/** Set a new phy address for low level access to registers */
 static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
@@ -915,7 +941,7 @@ static int ip175c_set_phy(struct switch_dev *dev, const struct switch_attr *attr
        return 0;
 }
 
-/*! get the current register number */
+/** Get the current register number */
 static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
@@ -924,7 +950,7 @@ static int ip175c_get_reg(struct switch_dev *dev, const struct switch_attr *attr
        return 0;
 }
 
-/*! set a new register address for low level access to registers */
+/** Set a new register address for low level access to registers */
 static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
@@ -937,7 +963,7 @@ static int ip175c_set_reg(struct switch_dev *dev, const struct switch_attr *attr
        return 0;
 }
 
-/*! get the register content of state->proc_mii */
+/** Get the register content of state->proc_mii */
 static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
@@ -953,11 +979,11 @@ static int ip175c_get_val(struct switch_dev *dev, const struct switch_attr *attr
        }
 }
 
-/*! write a value to the register defined by phy/reg above */
+/** Write a value to the register defined by phy/reg above */
 static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
-       int myval, err = 0;
+       int myval, err = -EINVAL;
 
        myval = val->value.i;
        if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
@@ -969,15 +995,13 @@ static int ip175c_set_val(struct switch_dev *dev, const struct switch_attr *attr
 static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
-       val->value.s = state->regs->NAME; // just a const pointer, won't be freed by swconfig.
+       val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
        return 0;
 }
 
-
 static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
-       struct mii_bus *bus = state->mii_bus;
        int nr = val->port_vlan;
        int ctrl;
        int autoneg;
@@ -993,14 +1017,14 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
                speed = 1;
        }
 
-       /* can't set speed for cpu port */
+       /* Can't set speed for cpu port */
        if (nr == state->regs->CPU_PORT)
                return -EINVAL;
 
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
-       ctrl = ip_phy_read(bus, nr, 0);
+       ctrl = ip_phy_read(state, nr, 0);
        if (ctrl < 0)
                return -EIO;
 
@@ -1009,13 +1033,12 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
        ctrl |= (autoneg<<12);
        ctrl |= (speed<<13);
 
-       return ip_phy_write(bus, nr, 0, ctrl);
+       return ip_phy_write(state, nr, 0, ctrl);
 }
 
 static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
-       struct mii_bus *bus = state->mii_bus;
        int nr = val->port_vlan;
        int speed, status;
 
@@ -1027,8 +1050,8 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
-       status = ip_phy_read(bus, nr, 1);
-       speed = ip_phy_read(bus, nr, 18);
+       status = ip_phy_read(state, nr, 1);
+       speed = ip_phy_read(state, nr, 18);
        if (status < 0 || speed < 0)
                return -EIO;
 
@@ -1040,11 +1063,9 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
        return 0;
 }
 
-
 static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
 {
        struct ip175c_state *state = dev->priv;
-       struct mii_bus *bus = state->mii_bus;
        int ctrl, speed, status;
        int nr = val->port_vlan;
        int len;
@@ -1059,9 +1080,9 @@ static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_at
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
-       ctrl = ip_phy_read(bus, nr, 0);
-       status = ip_phy_read(bus, nr, 1);
-       speed = ip_phy_read(bus, nr, 18);
+       ctrl = ip_phy_read(state, nr, 0);
+       status = ip_phy_read(state, nr, 1);
+       speed = ip_phy_read(state, nr, 18);
        if (ctrl < 0 || status < 0 || speed < 0)
                return -EIO;
 
@@ -1097,13 +1118,18 @@ static int ip175c_get_pvid(struct switch_dev *dev, int port, int *val)
 static int ip175c_set_pvid(struct switch_dev *dev, int port, int val)
 {
        struct ip175c_state *state = dev->priv;
+       int err;
 
-       state->ports[port].pvid = val;
+       if (val < 0 || val >= MAX_VLANS)
+               return -EINVAL;
 
-       if (!REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[port]))
-               return 0;
+       err = state->regs->get_state(state);
+       if (err < 0)
+               return err;
+
+       state->ports[port].pvid = val;
 
-       return setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[port], val);
+       return state->regs->update_state(state);
 }
 
 
@@ -1115,7 +1141,6 @@ enum Ports {
 };
 
 enum Globals {
-       IP175C_RESET,
        IP175C_ENABLE_VLAN,
        IP175C_GET_NAME,
        IP175C_REGISTER_PHY,
@@ -1145,7 +1170,7 @@ static const struct switch_attr ip175c_global[] = {
        [IP175C_REGISTER_PHY] = {
                .id = IP175C_REGISTER_PHY,
                .type = SWITCH_TYPE_INT,
-               .description = "Direct register access: set phy (0-4, or 29,30,31)",
+               .description = "Direct register access: set PHY (0-4, or 29,30,31)",
                .name  = "phy",
                .get  = ip175c_get_phy,
                .set = ip175c_set_phy,
@@ -1153,7 +1178,7 @@ static const struct switch_attr ip175c_global[] = {
        [IP175C_REGISTER_MII] = {
                .id = IP175C_REGISTER_MII,
                .type = SWITCH_TYPE_INT,
-               .description = "Direct register access: set mii number (0-31)",
+               .description = "Direct register access: set MII register number (0-31)",
                .name  = "reg",
                .get  = ip175c_get_reg,
                .set = ip175c_set_reg,
@@ -1204,7 +1229,7 @@ static int ip175c_probe(struct phy_device *pdev)
        struct switch_dev *dev;
        int err;
 
-       /* we only attach to PHY 0, but use all available PHYs */
+       /* We only attach to PHY 0, but use all available PHYs */
        if (pdev->addr != 0)
                return -ENODEV;
 
@@ -1301,15 +1326,35 @@ static struct phy_driver ip175c_driver = {
        .driver         = { .owner = THIS_MODULE },
 };
 
+static struct phy_driver ip175a_driver = {
+       .name           = "IC+ IP175A",
+       .phy_id         = 0x02430c50,
+       .phy_id_mask    = 0x0ffffff0,
+       .features       = PHY_BASIC_FEATURES,
+       .probe          = ip175c_probe,
+       .remove         = ip175c_remove,
+       .config_init    = ip175c_config_init,
+       .config_aneg    = ip175c_config_aneg,
+       .read_status    = ip175c_read_status,
+       .driver         = { .owner = THIS_MODULE },
+};
+
 
 int __init ip175c_init(void)
 {
+       int ret;
+
+       ret = phy_driver_register(&ip175a_driver);
+       if (ret < 0)
+               return ret;
+
        return phy_driver_register(&ip175c_driver);
 }
 
 void __exit ip175c_exit(void)
 {
        phy_driver_unregister(&ip175c_driver);
+       phy_driver_unregister(&ip175a_driver);
 }
 
 MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
@@ -1318,4 +1363,3 @@ MODULE_LICENSE("GPL");
 
 module_init(ip175c_init);
 module_exit(ip175c_exit);
-
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