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net: davinci_emac: cleanup unused mdio emac code
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This patch removes code that has been rendered useless by the previous patches
in this series.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Michael Williamson <michael.williamson@criticallink.com>
Tested-by: Caglar Akyuz <caglarakyuz@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Cyril Chemparathy authored and Kevin Hilman committed Sep 24, 2010
1 parent 3b2a40a commit 7b3742a
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Showing 2 changed files with 0 additions and 110 deletions.
107 changes: 0 additions & 107 deletions drivers/net/davinci_emac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -113,7 +113,6 @@ static const char emac_version_string[] = "TI DaVinci EMAC Linux v6.1";
#define EMAC_DEF_MAX_FRAME_SIZE (1500 + 14 + 4 + 4)
#define EMAC_DEF_TX_CH (0) /* Default 0th channel */
#define EMAC_DEF_RX_CH (0) /* Default 0th channel */
#define EMAC_DEF_MDIO_TICK_MS (10) /* typically 1 tick=1 ms) */
#define EMAC_DEF_MAX_TX_CH (1) /* Max TX channels configured */
#define EMAC_DEF_MAX_RX_CH (1) /* Max RX channels configured */
#define EMAC_POLL_WEIGHT (64) /* Default NAPI poll weight */
Expand Down Expand Up @@ -303,25 +302,6 @@ static const char emac_version_string[] = "TI DaVinci EMAC Linux v6.1";
#define EMAC_DM644X_INTMIN_INTVL 0x1
#define EMAC_DM644X_INTMAX_INTVL (EMAC_DM644X_EWINTCNT_MASK)

/* EMAC MDIO related */
/* Mask & Control defines */
#define MDIO_CONTROL_CLKDIV (0xFF)
#define MDIO_CONTROL_ENABLE BIT(30)
#define MDIO_USERACCESS_GO BIT(31)
#define MDIO_USERACCESS_WRITE BIT(30)
#define MDIO_USERACCESS_READ (0)
#define MDIO_USERACCESS_REGADR (0x1F << 21)
#define MDIO_USERACCESS_PHYADR (0x1F << 16)
#define MDIO_USERACCESS_DATA (0xFFFF)
#define MDIO_USERPHYSEL_LINKSEL BIT(7)
#define MDIO_VER_MODID (0xFFFF << 16)
#define MDIO_VER_REVMAJ (0xFF << 8)
#define MDIO_VER_REVMIN (0xFF)

#define MDIO_USERACCESS(inst) (0x80 + (inst * 8))
#define MDIO_USERPHYSEL(inst) (0x84 + (inst * 8))
#define MDIO_CONTROL (0x04)

/* EMAC DM646X control module registers */
#define EMAC_DM646X_CMINTCTRL 0x0C
#define EMAC_DM646X_CMRXINTEN 0x14
Expand Down Expand Up @@ -493,13 +473,6 @@ struct emac_priv {
u32 mac_hash2;
u32 multicast_hash_cnt[EMAC_NUM_MULTICAST_BITS];
u32 rx_addr_type;
/* periodic timer required for MDIO polling */
struct timer_list periodic_timer;
u32 periodic_ticks;
u32 timer_active;
u32 phy_mask;
/* mii_bus,phy members */
struct mii_bus *mii_bus;
const char *phy_id;
struct phy_device *phydev;
spinlock_t lock;
Expand All @@ -511,7 +484,6 @@ struct emac_priv {
/* clock frequency for EMAC */
static struct clk *emac_clk;
static unsigned long emac_bus_frequency;
static unsigned long mdio_max_freq;

#define emac_virt_to_phys(addr, priv) \
(((u32 __force)(addr) - (u32 __force)(priv->emac_ctrl_ram)) \
Expand Down Expand Up @@ -549,9 +521,6 @@ static char *emac_rxhost_errcodes[16] = {
#define emac_ctrl_read(reg) ioread32((priv->ctrl_base + (reg)))
#define emac_ctrl_write(reg, val) iowrite32(val, (priv->ctrl_base + (reg)))

#define emac_mdio_read(reg) ioread32(bus->priv + (reg))
#define emac_mdio_write(reg, val) iowrite32(val, (bus->priv + (reg)))

/**
* emac_dump_regs: Dump important EMAC registers to debug terminal
* @priv: The DaVinci EMAC private adapter structure
Expand Down Expand Up @@ -657,9 +626,6 @@ static void emac_dump_regs(struct emac_priv *priv)
emac_read(EMAC_RXDMAOVERRUNS));
}

/*************************************************************************
* EMAC MDIO/Phy Functionality
*************************************************************************/
/**
* emac_get_drvinfo: Get EMAC driver information
* @ndev: The DaVinci EMAC network adapter
Expand Down Expand Up @@ -2349,79 +2315,6 @@ void emac_poll_controller(struct net_device *ndev)
}
#endif

/* PHY/MII bus related */

/* Wait until mdio is ready for next command */
#define MDIO_WAIT_FOR_USER_ACCESS\
while ((emac_mdio_read((MDIO_USERACCESS(0))) &\
MDIO_USERACCESS_GO) != 0)

static int emac_mii_read(struct mii_bus *bus, int phy_id, int phy_reg)
{
unsigned int phy_data = 0;
unsigned int phy_control;

/* Wait until mdio is ready for next command */
MDIO_WAIT_FOR_USER_ACCESS;

phy_control = (MDIO_USERACCESS_GO |
MDIO_USERACCESS_READ |
((phy_reg << 21) & MDIO_USERACCESS_REGADR) |
((phy_id << 16) & MDIO_USERACCESS_PHYADR) |
(phy_data & MDIO_USERACCESS_DATA));
emac_mdio_write(MDIO_USERACCESS(0), phy_control);

/* Wait until mdio is ready for next command */
MDIO_WAIT_FOR_USER_ACCESS;

return emac_mdio_read(MDIO_USERACCESS(0)) & MDIO_USERACCESS_DATA;

}

static int emac_mii_write(struct mii_bus *bus, int phy_id,
int phy_reg, u16 phy_data)
{

unsigned int control;

/* until mdio is ready for next command */
MDIO_WAIT_FOR_USER_ACCESS;

control = (MDIO_USERACCESS_GO |
MDIO_USERACCESS_WRITE |
((phy_reg << 21) & MDIO_USERACCESS_REGADR) |
((phy_id << 16) & MDIO_USERACCESS_PHYADR) |
(phy_data & MDIO_USERACCESS_DATA));
emac_mdio_write(MDIO_USERACCESS(0), control);

return 0;
}

static int emac_mii_reset(struct mii_bus *bus)
{
unsigned int clk_div;
int mdio_bus_freq = emac_bus_frequency;

if (mdio_max_freq && mdio_bus_freq)
clk_div = ((mdio_bus_freq / mdio_max_freq) - 1);
else
clk_div = 0xFF;

clk_div &= MDIO_CONTROL_CLKDIV;

/* Set enable and clock divider in MDIOControl */
emac_mdio_write(MDIO_CONTROL, (clk_div | MDIO_CONTROL_ENABLE));

return 0;

}

static int mii_irqs[PHY_MAX_ADDR] = { PHY_POLL, PHY_POLL };

/* emac_driver: EMAC MII bus structure */

static struct mii_bus *emac_mii;

static void emac_adjust_link(struct net_device *ndev)
{
struct emac_priv *priv = netdev_priv(ndev);
Expand Down
3 changes: 0 additions & 3 deletions include/linux/davinci_emac.h
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Original file line number Diff line number Diff line change
Expand Up @@ -24,10 +24,7 @@ struct emac_platform_data {
u32 ctrl_mod_reg_offset;
u32 ctrl_ram_offset;
u32 hw_ram_addr;
u32 mdio_reg_offset;
u32 ctrl_ram_size;
u32 phy_mask;
u32 mdio_max_freq;

/*
* phy_id can be one of the following:
Expand Down

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