[PATCH] mv643xx_eth: Clean up platform_data configuration

We shouldn't expose the hardware register contents in platform_data.
The only things we allow the user to configure are autoneg, speed, and
duplex.  Add specific platform_data fields for these values and remove
the registers configs.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

4 files changed, 31 insertions, 73 deletions

diff --git a/arch/ppc/platforms/hdpu.c b/arch/ppc/platforms/hdpu.c
index 50039a204c24..f945416960e9 100644
--- a/arch/ppc/platforms/hdpu.c
+++ b/arch/ppc/platforms/hdpu.c
@@ -319,11 +319,10 @@ static void __init hdpu_fixup_eth_pdata(struct platform_device *pd)
         struct mv643xx_eth_platform_data *eth_pd;
         eth_pd = pd->dev.platform_data;
 
-        eth_pd->port_serial_control =
-            mv64x60_read(&bh, MV643XX_ETH_PORT_SERIAL_CONTROL_REG(pd->id) & ~1);
-
         eth_pd->force_phy_addr = 1;
         eth_pd->phy_addr = pd->id;
+        eth_pd->speed = SPEED_100;
+        eth_pd->duplex = DUPLEX_FULL;
         eth_pd->tx_queue_size = 400;
         eth_pd->rx_queue_size = 800;
 }
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index ff2b613a7436..df572018595e 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -266,13 +266,14 @@ static void mv643xx_eth_update_mac_address(struct net_device *dev)
 static void mv643xx_eth_set_rx_mode(struct net_device *dev)
 {
         struct mv643xx_private *mp = netdev_priv(dev);
+        u32 config_reg;
 
+        config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num));
         if (dev->flags & IFF_PROMISC)
-                mp->port_config |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
+                config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
         else
-                mp->port_config &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
-
-        mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), mp->port_config);
+                config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
+        mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), config_reg);
 
         eth_port_set_multicast_list(dev);
 }
@@ -1454,9 +1455,8 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
         struct resource *res;
         int err;
         struct ethtool_cmd cmd;
-        u32 pscr;
-        int duplex;
-        int speed;
+        int duplex = DUPLEX_HALF;
+        int speed = 0;                  /* default to auto-negotiation */
 
         dev = alloc_etherdev(sizeof(struct mv643xx_private));
         if (!dev)
@@ -1515,33 +1515,17 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 
         /* set default config values */
         eth_port_uc_addr_get(dev, dev->dev_addr);
-        mp->port_config = MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE;
-        mp->port_config_extend = MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE;
-        mp->port_sdma_config = MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE;
-        mp->port_serial_control = MV643XX_ETH_PORT_SERIAL_CONTROL_DEFAULT_VALUE;
         mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
         mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
 
         pd = pdev->dev.platform_data;
         if (pd) {
-                if (pd->mac_addr != NULL)
+                if (pd->mac_addr)
                         memcpy(dev->dev_addr, pd->mac_addr, 6);
 
                 if (pd->phy_addr || pd->force_phy_addr)
                         ethernet_phy_set(port_num, pd->phy_addr);
 
-                if (pd->port_config || pd->force_port_config)
-                        mp->port_config = pd->port_config;
-
-                if (pd->port_config_extend || pd->force_port_config_extend)
-                        mp->port_config_extend = pd->port_config_extend;
-
-                if (pd->port_sdma_config || pd->force_port_sdma_config)
-                        mp->port_sdma_config = pd->port_sdma_config;
-
-                if (pd->port_serial_control || pd->force_port_serial_control)
-                        mp->port_serial_control = pd->port_serial_control;
-
                 if (pd->rx_queue_size)
                         mp->rx_ring_size = pd->rx_queue_size;
 
@@ -1557,6 +1541,9 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
                         mp->rx_sram_size = pd->rx_sram_size;
                         mp->rx_sram_addr = pd->rx_sram_addr;
                 }
+
+                duplex = pd->duplex;
+                speed = pd->speed;
         }
 
         /* Hook up MII support for ethtool */
@@ -1575,28 +1562,7 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
                 goto out;
         }
 
-        pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
-        pscr &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
-        mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
-        pscr = mp->port_serial_control;
-        mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
-
-        if (!(pscr & MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX) &&
-            !(pscr & MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII))
-                speed = 0;
-        else if (pscr & MV643XX_ETH_PORT_STATUS_GMII_1000)
-                speed = SPEED_1000;
-        else if (pscr & MV643XX_ETH_PORT_STATUS_MII_100)
-                speed = SPEED_100;
-        else
-                speed = SPEED_10;
-
-        if (pscr & MV643XX_ETH_PORT_STATUS_FULL_DUPLEX)
-                duplex = DUPLEX_FULL;
-        else
-                duplex = DUPLEX_HALF;
-
-        ethernet_phy_reset(mp->port_num);
+        ethernet_phy_reset(port_num);
         mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
         mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
         mv643xx_eth_update_pscr(dev, &cmd);
@@ -1971,13 +1937,17 @@ static void eth_port_start(struct net_device *dev)
         eth_port_uc_addr_set(port_num, dev->dev_addr);
 
         /* Assign port configuration and command. */
-        mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num), mp->port_config);
+        mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num),
+                          MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE);
+
+        mv_write(MV643XX_ETH_PORT_CONFIG_EXTEND_REG(port_num),
+                          MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE);
 
         pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
-        pscr &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
+
+        pscr &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | MV643XX_ETH_FORCE_LINK_PASS);
         mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
 
-        pscr &= ~MV643XX_ETH_FORCE_LINK_PASS;
         pscr |= MV643XX_ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
                 MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII    |
                 MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX     |
@@ -1990,7 +1960,8 @@ static void eth_port_start(struct net_device *dev)
         mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
 
         /* Assign port SDMA configuration */
-        mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num), mp->port_sdma_config);
+        mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num),
+                          MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE);
 
         /* Enable port Rx. */
         mv643xx_eth_port_enable_rx(port_num, mp->port_rx_queue_command);
diff --git a/drivers/net/mv643xx_eth.h b/drivers/net/mv643xx_eth.h
index f2e5da79dde8..a553054e8da7 100644
--- a/drivers/net/mv643xx_eth.h
+++ b/drivers/net/mv643xx_eth.h
@@ -321,10 +321,6 @@ struct mv643xx_mib_counters {
 
 struct mv643xx_private {
         int port_num;                   /* User Ethernet port number    */
-        u32 port_config;                /* User port configuration value*/
-        u32 port_config_extend;         /* User port config extend value*/
-        u32 port_sdma_config;           /* User port SDMA config value  */
-        u32 port_serial_control;        /* User port serial control value */
         u32 port_tx_queue_command;      /* Port active Tx queues summary*/
         u32 port_rx_queue_command;      /* Port active Rx queues summary*/
 
diff --git a/include/linux/mv643xx.h b/include/linux/mv643xx.h
index 7ffbeac7d2bb..955d3069d727 100644
--- a/include/linux/mv643xx.h
+++ b/include/linux/mv643xx.h
@@ -1288,23 +1288,15 @@ struct mv64xxx_i2c_pdata {
 #define MV643XX_ETH_NAME        "mv643xx_eth"
 
 struct mv643xx_eth_platform_data {
-        /* 
-         * Non-values for mac_addr, phy_addr, port_config, etc.
-         * override the default value.  Setting the corresponding
-         * force_* field, causes the default value to be overridden
-         * even when zero.
-         */
-        unsigned int    force_phy_addr:1;
-        unsigned int    force_port_config:1;
-        unsigned int    force_port_config_extend:1;
-        unsigned int    force_port_sdma_config:1;
-        unsigned int    force_port_serial_control:1;
-        int             phy_addr;
         char            *mac_addr;      /* pointer to mac address */
-        u32             port_config;
-        u32             port_config_extend;
-        u32             port_sdma_config;
-        u32             port_serial_control;
+        u16             force_phy_addr; /* force override if phy_addr == 0 */
+        u16             phy_addr;
+
+        /* If speed is 0, then speed and duplex are autonegotiated. */
+        int             speed;          /* 0, SPEED_10, SPEED_100, SPEED_1000 */
+        int             duplex;         /* DUPLEX_HALF or DUPLEX_FULL */
+
+        /* non-zero values of the following fields override defaults */
         u32             tx_queue_size;
         u32             rx_queue_size;
         u32             tx_sram_addr;