diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-06-15 20:23:00 +0200 |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-12 12:41:30 +0200 |
commit | b13ad8f498793dc582b7f42f27b8f44490bd608d (patch) | |
tree | d0a1acf3e2d89fbc3bbf0d11fd2b60a41057a55c /drivers/net/ll_temac_mdio.c | |
parent | jme: Move the JME driver (diff) | |
download | linux-b13ad8f498793dc582b7f42f27b8f44490bd608d.tar.xz linux-b13ad8f498793dc582b7f42f27b8f44490bd608d.zip |
xilinx/ll_temac: Move the Xilinx drivers
Move the Xilinx drivers into drivers/net/ethernet/xilinx/ and
make the necessary Kconfig and Makefile changes.
CC: John Williams <john.williams@petalogix.com>
CC: "David H. Lynch Jr." <dhlii@dlasys.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ll_temac_mdio.c')
-rw-r--r-- | drivers/net/ll_temac_mdio.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/net/ll_temac_mdio.c b/drivers/net/ll_temac_mdio.c deleted file mode 100644 index 8cf9d4f56bb2..000000000000 --- a/drivers/net/ll_temac_mdio.c +++ /dev/null @@ -1,122 +0,0 @@ -/* - * MDIO bus driver for the Xilinx TEMAC device - * - * Copyright (c) 2009 Secret Lab Technologies, Ltd. - */ - -#include <linux/io.h> -#include <linux/netdevice.h> -#include <linux/mutex.h> -#include <linux/phy.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/of_address.h> -#include <linux/slab.h> -#include <linux/of_mdio.h> - -#include "ll_temac.h" - -/* --------------------------------------------------------------------- - * MDIO Bus functions - */ -static int temac_mdio_read(struct mii_bus *bus, int phy_id, int reg) -{ - struct temac_local *lp = bus->priv; - u32 rc; - - /* Write the PHY address to the MIIM Access Initiator register. - * When the transfer completes, the PHY register value will appear - * in the LSW0 register */ - mutex_lock(&lp->indirect_mutex); - temac_iow(lp, XTE_LSW0_OFFSET, (phy_id << 5) | reg); - rc = temac_indirect_in32(lp, XTE_MIIMAI_OFFSET); - mutex_unlock(&lp->indirect_mutex); - - dev_dbg(lp->dev, "temac_mdio_read(phy_id=%i, reg=%x) == %x\n", - phy_id, reg, rc); - - return rc; -} - -static int temac_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 val) -{ - struct temac_local *lp = bus->priv; - - dev_dbg(lp->dev, "temac_mdio_write(phy_id=%i, reg=%x, val=%x)\n", - phy_id, reg, val); - - /* First write the desired value into the write data register - * and then write the address into the access initiator register - */ - mutex_lock(&lp->indirect_mutex); - temac_indirect_out32(lp, XTE_MGTDR_OFFSET, val); - temac_indirect_out32(lp, XTE_MIIMAI_OFFSET, (phy_id << 5) | reg); - mutex_unlock(&lp->indirect_mutex); - - return 0; -} - -int temac_mdio_setup(struct temac_local *lp, struct device_node *np) -{ - struct mii_bus *bus; - const u32 *bus_hz; - int clk_div; - int rc, size; - struct resource res; - - /* Calculate a reasonable divisor for the clock rate */ - clk_div = 0x3f; /* worst-case default setting */ - bus_hz = of_get_property(np, "clock-frequency", &size); - if (bus_hz && size >= sizeof(*bus_hz)) { - clk_div = (*bus_hz) / (2500 * 1000 * 2) - 1; - if (clk_div < 1) - clk_div = 1; - if (clk_div > 0x3f) - clk_div = 0x3f; - } - - /* Enable the MDIO bus by asserting the enable bit and writing - * in the clock config */ - mutex_lock(&lp->indirect_mutex); - temac_indirect_out32(lp, XTE_MC_OFFSET, 1 << 6 | clk_div); - mutex_unlock(&lp->indirect_mutex); - - bus = mdiobus_alloc(); - if (!bus) - return -ENOMEM; - - of_address_to_resource(np, 0, &res); - snprintf(bus->id, MII_BUS_ID_SIZE, "%.8llx", - (unsigned long long)res.start); - bus->priv = lp; - bus->name = "Xilinx TEMAC MDIO"; - bus->read = temac_mdio_read; - bus->write = temac_mdio_write; - bus->parent = lp->dev; - bus->irq = lp->mdio_irqs; /* preallocated IRQ table */ - - lp->mii_bus = bus; - - rc = of_mdiobus_register(bus, np); - if (rc) - goto err_register; - - mutex_lock(&lp->indirect_mutex); - dev_dbg(lp->dev, "MDIO bus registered; MC:%x\n", - temac_indirect_in32(lp, XTE_MC_OFFSET)); - mutex_unlock(&lp->indirect_mutex); - return 0; - - err_register: - mdiobus_free(bus); - return rc; -} - -void temac_mdio_teardown(struct temac_local *lp) -{ - mdiobus_unregister(lp->mii_bus); - kfree(lp->mii_bus->irq); - mdiobus_free(lp->mii_bus); - lp->mii_bus = NULL; -} - |