diff options
Diffstat (limited to 'target/linux/ar71xx/files-2.6.39/drivers/net/ag71xx/ag71xx_mdio.c')
| -rw-r--r-- | target/linux/ar71xx/files-2.6.39/drivers/net/ag71xx/ag71xx_mdio.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/target/linux/ar71xx/files-2.6.39/drivers/net/ag71xx/ag71xx_mdio.c b/target/linux/ar71xx/files-2.6.39/drivers/net/ag71xx/ag71xx_mdio.c deleted file mode 100644 index b2460d726e..0000000000 --- a/target/linux/ar71xx/files-2.6.39/drivers/net/ag71xx/ag71xx_mdio.c +++ /dev/null @@ -1,248 +0,0 @@ -/* - * Atheros AR71xx built-in ethernet mac driver - * - * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> - * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> - * - * Based on Atheros' AG7100 driver - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#include "ag71xx.h" - -#define AG71XX_MDIO_RETRY 1000 -#define AG71XX_MDIO_DELAY 5 - -static inline void ag71xx_mdio_wr(struct ag71xx_mdio *am, unsigned reg, - u32 value) -{ - void __iomem *r; - - r = am->mdio_base + reg; - __raw_writel(value, r); - - /* flush write */ - (void) __raw_readl(r); -} - -static inline u32 ag71xx_mdio_rr(struct ag71xx_mdio *am, unsigned reg) -{ - return __raw_readl(am->mdio_base + reg); -} - -static void ag71xx_mdio_dump_regs(struct ag71xx_mdio *am) -{ - DBG("%s: mii_cfg=%08x, mii_cmd=%08x, mii_addr=%08x\n", - am->mii_bus->name, - ag71xx_mdio_rr(am, AG71XX_REG_MII_CFG), - ag71xx_mdio_rr(am, AG71XX_REG_MII_CMD), - ag71xx_mdio_rr(am, AG71XX_REG_MII_ADDR)); - DBG("%s: mii_ctrl=%08x, mii_status=%08x, mii_ind=%08x\n", - am->mii_bus->name, - ag71xx_mdio_rr(am, AG71XX_REG_MII_CTRL), - ag71xx_mdio_rr(am, AG71XX_REG_MII_STATUS), - ag71xx_mdio_rr(am, AG71XX_REG_MII_IND)); -} - -int ag71xx_mdio_mii_read(struct ag71xx_mdio *am, int addr, int reg) -{ - int ret; - int i; - - ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_WRITE); - ag71xx_mdio_wr(am, AG71XX_REG_MII_ADDR, - ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff)); - ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_READ); - - i = AG71XX_MDIO_RETRY; - while (ag71xx_mdio_rr(am, AG71XX_REG_MII_IND) & MII_IND_BUSY) { - if (i-- == 0) { - printk(KERN_ERR "%s: mii_read timed out\n", - am->mii_bus->name); - ret = 0xffff; - goto out; - } - udelay(AG71XX_MDIO_DELAY); - } - - ret = ag71xx_mdio_rr(am, AG71XX_REG_MII_STATUS) & 0xffff; - ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_WRITE); - - DBG("mii_read: addr=%04x, reg=%04x, value=%04x\n", addr, reg, ret); - -out: - return ret; -} - -void ag71xx_mdio_mii_write(struct ag71xx_mdio *am, int addr, int reg, u16 val) -{ - int i; - - DBG("mii_write: addr=%04x, reg=%04x, value=%04x\n", addr, reg, val); - - ag71xx_mdio_wr(am, AG71XX_REG_MII_ADDR, - ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff)); - ag71xx_mdio_wr(am, AG71XX_REG_MII_CTRL, val); - - i = AG71XX_MDIO_RETRY; - while (ag71xx_mdio_rr(am, AG71XX_REG_MII_IND) & MII_IND_BUSY) { - if (i-- == 0) { - printk(KERN_ERR "%s: mii_write timed out\n", - am->mii_bus->name); - break; - } - udelay(AG71XX_MDIO_DELAY); - } -} - -static int ag71xx_mdio_reset(struct mii_bus *bus) -{ - struct ag71xx_mdio *am = bus->priv; - u32 t; - - if (am->pdata->is_ar7240) - t = MII_CFG_CLK_DIV_6; - else - t = MII_CFG_CLK_DIV_28; - - ag71xx_mdio_wr(am, AG71XX_REG_MII_CFG, t | MII_CFG_RESET); - udelay(100); - - ag71xx_mdio_wr(am, AG71XX_REG_MII_CFG, t); - udelay(100); - - return 0; -} - -static int ag71xx_mdio_read(struct mii_bus *bus, int addr, int reg) -{ - struct ag71xx_mdio *am = bus->priv; - - if (am->pdata->is_ar7240) - return ar7240sw_phy_read(bus, addr, reg); - else - return ag71xx_mdio_mii_read(am, addr, reg); -} - -static int ag71xx_mdio_write(struct mii_bus *bus, int addr, int reg, u16 val) -{ - struct ag71xx_mdio *am = bus->priv; - - if (am->pdata->is_ar7240) - ar7240sw_phy_write(bus, addr, reg, val); - else - ag71xx_mdio_mii_write(am, addr, reg, val); - return 0; -} - -static int __devinit ag71xx_mdio_probe(struct platform_device *pdev) -{ - struct ag71xx_mdio_platform_data *pdata; - struct ag71xx_mdio *am; - struct resource *res; - int i; - int err; - - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "no platform data specified\n"); - return -EINVAL; - } - - am = kzalloc(sizeof(*am), GFP_KERNEL); - if (!am) { - err = -ENOMEM; - goto err_out; - } - - am->pdata = pdata; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no iomem resource found\n"); - err = -ENXIO; - goto err_out; - } - - am->mdio_base = ioremap_nocache(res->start, res->end - res->start + 1); - if (!am->mdio_base) { - dev_err(&pdev->dev, "unable to ioremap registers\n"); - err = -ENOMEM; - goto err_free_mdio; - } - - am->mii_bus = mdiobus_alloc(); - if (am->mii_bus == NULL) { - err = -ENOMEM; - goto err_iounmap; - } - - am->mii_bus->name = "ag71xx_mdio"; - am->mii_bus->read = ag71xx_mdio_read; - am->mii_bus->write = ag71xx_mdio_write; - am->mii_bus->reset = ag71xx_mdio_reset; - am->mii_bus->irq = am->mii_irq; - am->mii_bus->priv = am; - am->mii_bus->parent = &pdev->dev; - snprintf(am->mii_bus->id, MII_BUS_ID_SIZE, "%s", dev_name(&pdev->dev)); - am->mii_bus->phy_mask = pdata->phy_mask; - - for (i = 0; i < PHY_MAX_ADDR; i++) - am->mii_irq[i] = PHY_POLL; - - ag71xx_mdio_wr(am, AG71XX_REG_MAC_CFG1, 0); - - err = mdiobus_register(am->mii_bus); - if (err) - goto err_free_bus; - - ag71xx_mdio_dump_regs(am); - - platform_set_drvdata(pdev, am); - return 0; - -err_free_bus: - mdiobus_free(am->mii_bus); -err_iounmap: - iounmap(am->mdio_base); -err_free_mdio: - kfree(am); -err_out: - return err; -} - -static int __devexit ag71xx_mdio_remove(struct platform_device *pdev) -{ - struct ag71xx_mdio *am = platform_get_drvdata(pdev); - - if (am) { - mdiobus_unregister(am->mii_bus); - mdiobus_free(am->mii_bus); - iounmap(am->mdio_base); - kfree(am); - platform_set_drvdata(pdev, NULL); - } - - return 0; -} - -static struct platform_driver ag71xx_mdio_driver = { - .probe = ag71xx_mdio_probe, - .remove = __exit_p(ag71xx_mdio_remove), - .driver = { - .name = "ag71xx-mdio", - } -}; - -int __init ag71xx_mdio_driver_init(void) -{ - return platform_driver_register(&ag71xx_mdio_driver); -} - -void ag71xx_mdio_driver_exit(void) -{ - platform_driver_unregister(&ag71xx_mdio_driver); -} |