Update compat-wireless to 2.6.36-5-spn

chromeos/compat-wireless/drivers/net/wireless/orinoco/airport.c

+/* airport.c
+ *
+ * A driver for "Hermes" chipset based Apple Airport wireless
+ * card.
+ *
+ * Copyright notice & release notes in file main.c
+ *
+ * Note specific to airport stub:
+ *
+ *  0.05 : first version of the new split driver
+ *  0.06 : fix possible hang on powerup, add sleep support
+ */
+
+#define DRIVER_NAME "airport"
+#define PFX DRIVER_NAME ": "
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/pmac_feature.h>
+
+#include "orinoco.h"
+
+#define AIRPORT_IO_LEN  (0x1000)        /* one page */
+
+struct airport {
+        struct macio_dev *mdev;
+        void __iomem *vaddr;
+        unsigned int irq;
+        int irq_requested;
+        int ndev_registered;
+};
+
+static int
+airport_suspend(struct macio_dev *mdev, pm_message_t state)
+{
+        struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
+        struct net_device *dev = priv->ndev;
+        struct airport *card = priv->card;
+        unsigned long flags;
+        int err;
+
+        printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
+
+        err = orinoco_lock(priv, &flags);
+        if (err) {
+                printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
+                       dev->name);
+                return 0;
+        }
+
+        orinoco_down(priv);
+        orinoco_unlock(priv, &flags);
+
+        disable_irq(card->irq);
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(mdev), 0, 0);
+
+        return 0;
+}
+
+static int
+airport_resume(struct macio_dev *mdev)
+{
+        struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
+        struct net_device *dev = priv->ndev;
+        struct airport *card = priv->card;
+        unsigned long flags;
+        int err;
+
+        printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
+
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(mdev), 0, 1);
+        msleep(200);
+
+        enable_irq(card->irq);
+
+        priv->hw.ops->lock_irqsave(&priv->lock, &flags);
+        err = orinoco_up(priv);
+        priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
+
+        return err;
+}
+
+static int
+airport_detach(struct macio_dev *mdev)
+{
+        struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
+        struct airport *card = priv->card;
+
+        if (card->ndev_registered)
+                orinoco_if_del(priv);
+        card->ndev_registered = 0;
+
+        if (card->irq_requested)
+                free_irq(card->irq, priv);
+        card->irq_requested = 0;
+
+        if (card->vaddr)
+                iounmap(card->vaddr);
+        card->vaddr = NULL;
+
+        macio_release_resource(mdev, 0);
+
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(mdev), 0, 0);
+        ssleep(1);
+
+        macio_set_drvdata(mdev, NULL);
+        free_orinocodev(priv);
+
+        return 0;
+}
+
+static int airport_hard_reset(struct orinoco_private *priv)
+{
+        /* It would be nice to power cycle the Airport for a real hard
+         * reset, but for some reason although it appears to
+         * re-initialize properly, it falls in a screaming heap
+         * shortly afterwards. */
+#if 0
+        struct airport *card = priv->card;
+
+        /* Vitally important.  If we don't do this it seems we get an
+         * interrupt somewhere during the power cycle, since
+         * hw_unavailable is already set it doesn't get ACKed, we get
+         * into an interrupt loop and the PMU decides to turn us
+         * off. */
+        disable_irq(card->irq);
+
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(card->mdev), 0, 0);
+        ssleep(1);
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(card->mdev), 0, 1);
+        ssleep(1);
+
+        enable_irq(card->irq);
+        ssleep(1);
+#endif
+
+        return 0;
+}
+
+static int
+airport_attach(struct macio_dev *mdev, const struct of_device_id *match)
+{
+        struct orinoco_private *priv;
+        struct airport *card;
+        unsigned long phys_addr;
+        hermes_t *hw;
+
+        if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
+                printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
+                return -ENODEV;
+        }
+
+        /* Allocate space for private device-specific data */
+        priv = alloc_orinocodev(sizeof(*card), &mdev->ofdev.dev,
+                                airport_hard_reset, NULL);
+        if (!priv) {
+                printk(KERN_ERR PFX "Cannot allocate network device\n");
+                return -ENODEV;
+        }
+        card = priv->card;
+
+        hw = &priv->hw;
+        card->mdev = mdev;
+
+        if (macio_request_resource(mdev, 0, DRIVER_NAME)) {
+                printk(KERN_ERR PFX "can't request IO resource !\n");
+                free_orinocodev(priv);
+                return -EBUSY;
+        }
+
+        macio_set_drvdata(mdev, priv);
+
+        /* Setup interrupts & base address */
+        card->irq = macio_irq(mdev, 0);
+        phys_addr = macio_resource_start(mdev, 0);  /* Physical address */
+        printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
+        card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
+        if (!card->vaddr) {
+                printk(KERN_ERR PFX "ioremap() failed\n");
+                goto failed;
+        }
+
+        hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);
+
+        /* Power up card */
+        pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
+                          macio_get_of_node(mdev), 0, 1);
+        ssleep(1);
+
+        /* Reset it before we get the interrupt */
+        hw->ops->init(hw);
+
+        if (request_irq(card->irq, orinoco_interrupt, 0, DRIVER_NAME, priv)) {
+                printk(KERN_ERR PFX "Couldn't get IRQ %d\n", card->irq);
+                goto failed;
+        }
+        card->irq_requested = 1;
+
+        /* Initialise the main driver */
+        if (orinoco_init(priv) != 0) {
+                printk(KERN_ERR PFX "orinoco_init() failed\n");
+                goto failed;
+        }
+
+        /* Register an interface with the stack */
+        if (orinoco_if_add(priv, phys_addr, card->irq, NULL) != 0) {
+                printk(KERN_ERR PFX "orinoco_if_add() failed\n");
+                goto failed;
+        }
+        card->ndev_registered = 1;
+        return 0;
+ failed:
+        airport_detach(mdev);
+        return -ENODEV;
+}                               /* airport_attach */
+
+
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+        " (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
+MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
+MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static struct of_device_id airport_match[] =
+{
+        {
+        .name           = "radio",
+        },
+        {},
+};
+
+MODULE_DEVICE_TABLE(of, airport_match);
+
+static struct macio_driver airport_driver = {
+        .driver = {
+                .name           = DRIVER_NAME,
+                .owner          = THIS_MODULE,
+                .of_match_table = airport_match,
+        },
+        .probe          = airport_attach,
+        .remove         = airport_detach,
+        .suspend        = airport_suspend,
+        .resume         = airport_resume,
+};
+
+static int __init
+init_airport(void)
+{
+        printk(KERN_DEBUG "%s\n", version);
+
+        return macio_register_driver(&airport_driver);
+}
+
+static void __exit
+exit_airport(void)
+{
+        macio_unregister_driver(&airport_driver);
+}
+
+module_init(init_airport);
+module_exit(exit_airport);