zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/net/phy/fixed.c b/ap/os/linux/linux-3.4.x/drivers/net/phy/fixed.c
new file mode 100644
index 0000000..633680d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/net/phy/fixed.c
@@ -0,0 +1,264 @@
+/*
+ * Fixed MDIO bus (MDIO bus emulation with fixed PHYs)
+ *
+ * Author: Vitaly Bordug <vbordug@ru.mvista.com>
+ * Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * Copyright (c) 2006-2007 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/list.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+#include <linux/phy_fixed.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+
+#define MII_REGS_NUM 29
+
+struct fixed_mdio_bus {
+ int irqs[PHY_MAX_ADDR];
+ struct mii_bus *mii_bus;
+ struct list_head phys;
+};
+
+struct fixed_phy {
+ int id;
+ u16 regs[MII_REGS_NUM];
+ struct phy_device *phydev;
+ struct fixed_phy_status status;
+ int (*link_update)(struct net_device *, struct fixed_phy_status *);
+ struct list_head node;
+};
+
+static struct platform_device *pdev;
+static struct fixed_mdio_bus platform_fmb = {
+ .phys = LIST_HEAD_INIT(platform_fmb.phys),
+};
+
+static int fixed_phy_update_regs(struct fixed_phy *fp)
+{
+ u16 bmsr = BMSR_ANEGCAPABLE;
+ u16 bmcr = 0;
+ u16 lpagb = 0;
+ u16 lpa = 0;
+
+ if (fp->status.duplex) {
+ bmcr |= BMCR_FULLDPLX;
+
+ switch (fp->status.speed) {
+ case 1000:
+ bmsr |= BMSR_ESTATEN;
+ bmcr |= BMCR_SPEED1000;
+ lpagb |= LPA_1000FULL;
+ break;
+ case 100:
+ bmsr |= BMSR_100FULL;
+ bmcr |= BMCR_SPEED100;
+ lpa |= LPA_100FULL;
+ break;
+ case 10:
+ bmsr |= BMSR_10FULL;
+ lpa |= LPA_10FULL;
+ break;
+ default:
+ printk(KERN_WARNING "fixed phy: unknown speed\n");
+ return -EINVAL;
+ }
+ } else {
+ switch (fp->status.speed) {
+ case 1000:
+ bmsr |= BMSR_ESTATEN;
+ bmcr |= BMCR_SPEED1000;
+ lpagb |= LPA_1000HALF;
+ break;
+ case 100:
+ bmsr |= BMSR_100HALF;
+ bmcr |= BMCR_SPEED100;
+ lpa |= LPA_100HALF;
+ break;
+ case 10:
+ bmsr |= BMSR_10HALF;
+ lpa |= LPA_10HALF;
+ break;
+ default:
+ printk(KERN_WARNING "fixed phy: unknown speed\n");
+ return -EINVAL;
+ }
+ }
+
+ if (fp->status.link)
+ bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
+
+ if (fp->status.pause)
+ lpa |= LPA_PAUSE_CAP;
+
+ if (fp->status.asym_pause)
+ lpa |= LPA_PAUSE_ASYM;
+
+ fp->regs[MII_PHYSID1] = fp->id >> 16;
+ fp->regs[MII_PHYSID2] = fp->id;
+
+ fp->regs[MII_BMSR] = bmsr;
+ fp->regs[MII_BMCR] = bmcr;
+ fp->regs[MII_LPA] = lpa;
+ fp->regs[MII_STAT1000] = lpagb;
+
+ return 0;
+}
+
+static int fixed_mdio_read(struct mii_bus *bus, int phy_id, int reg_num)
+{
+ struct fixed_mdio_bus *fmb = bus->priv;
+ struct fixed_phy *fp;
+
+ if (reg_num >= MII_REGS_NUM)
+ return -1;
+
+ list_for_each_entry(fp, &fmb->phys, node) {
+ if (fp->id == phy_id) {
+ /* Issue callback if user registered it. */
+ if (fp->link_update) {
+ fp->link_update(fp->phydev->attached_dev,
+ &fp->status);
+ fixed_phy_update_regs(fp);
+ }
+ return fp->regs[reg_num];
+ }
+ }
+
+ return 0xFFFF;
+}
+
+static int fixed_mdio_write(struct mii_bus *bus, int phy_id, int reg_num,
+ u16 val)
+{
+ return 0;
+}
+
+/*
+ * If something weird is required to be done with link/speed,
+ * network driver is able to assign a function to implement this.
+ * May be useful for PHY's that need to be software-driven.
+ */
+int fixed_phy_set_link_update(struct phy_device *phydev,
+ int (*link_update)(struct net_device *,
+ struct fixed_phy_status *))
+{
+ struct fixed_mdio_bus *fmb = &platform_fmb;
+ struct fixed_phy *fp;
+
+ if (!link_update || !phydev || !phydev->bus)
+ return -EINVAL;
+
+ list_for_each_entry(fp, &fmb->phys, node) {
+ if (fp->id == phydev->phy_id) {
+ fp->link_update = link_update;
+ fp->phydev = phydev;
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(fixed_phy_set_link_update);
+
+int fixed_phy_add(unsigned int irq, int phy_id,
+ struct fixed_phy_status *status)
+{
+ int ret;
+ struct fixed_mdio_bus *fmb = &platform_fmb;
+ struct fixed_phy *fp;
+
+ fp = kzalloc(sizeof(*fp), GFP_KERNEL);
+ if (!fp)
+ return -ENOMEM;
+
+ memset(fp->regs, 0xFF, sizeof(fp->regs[0]) * MII_REGS_NUM);
+
+ fmb->irqs[phy_id] = irq;
+
+ fp->id = phy_id;
+ fp->status = *status;
+
+ ret = fixed_phy_update_regs(fp);
+ if (ret)
+ goto err_regs;
+
+ list_add_tail(&fp->node, &fmb->phys);
+
+ return 0;
+
+err_regs:
+ kfree(fp);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(fixed_phy_add);
+
+static int __init fixed_mdio_bus_init(void)
+{
+ struct fixed_mdio_bus *fmb = &platform_fmb;
+ int ret;
+
+ pdev = platform_device_register_simple("Fixed MDIO bus", 0, NULL, 0);
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ goto err_pdev;
+ }
+
+ fmb->mii_bus = mdiobus_alloc();
+ if (fmb->mii_bus == NULL) {
+ ret = -ENOMEM;
+ goto err_mdiobus_reg;
+ }
+
+ snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "fixed-0");
+ fmb->mii_bus->name = "Fixed MDIO Bus";
+ fmb->mii_bus->priv = fmb;
+ fmb->mii_bus->parent = &pdev->dev;
+ fmb->mii_bus->read = &fixed_mdio_read;
+ fmb->mii_bus->write = &fixed_mdio_write;
+ fmb->mii_bus->irq = fmb->irqs;
+
+ ret = mdiobus_register(fmb->mii_bus);
+ if (ret)
+ goto err_mdiobus_alloc;
+
+ return 0;
+
+err_mdiobus_alloc:
+ mdiobus_free(fmb->mii_bus);
+err_mdiobus_reg:
+ platform_device_unregister(pdev);
+err_pdev:
+ return ret;
+}
+module_init(fixed_mdio_bus_init);
+
+static void __exit fixed_mdio_bus_exit(void)
+{
+ struct fixed_mdio_bus *fmb = &platform_fmb;
+ struct fixed_phy *fp, *tmp;
+
+ mdiobus_unregister(fmb->mii_bus);
+ mdiobus_free(fmb->mii_bus);
+ platform_device_unregister(pdev);
+
+ list_for_each_entry_safe(fp, tmp, &fmb->phys, node) {
+ list_del(&fp->node);
+ kfree(fp);
+ }
+}
+module_exit(fixed_mdio_bus_exit);
+
+MODULE_DESCRIPTION("Fixed MDIO bus (MDIO bus emulation with fixed PHYs)");
+MODULE_AUTHOR("Vitaly Bordug");
+MODULE_LICENSE("GPL");