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Diffstat (limited to 'target/linux/lantiq/patches-3.0/170-falcon-dm9000-polling.patch')
-rw-r--r--target/linux/lantiq/patches-3.0/170-falcon-dm9000-polling.patch117
1 files changed, 117 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.0/170-falcon-dm9000-polling.patch b/target/linux/lantiq/patches-3.0/170-falcon-dm9000-polling.patch
new file mode 100644
index 0000000000..83763182e5
--- /dev/null
+++ b/target/linux/lantiq/patches-3.0/170-falcon-dm9000-polling.patch
@@ -0,0 +1,117 @@
+--- a/drivers/net/dm9000.c
++++ b/drivers/net/dm9000.c
+@@ -19,6 +19,7 @@
+ * Sascha Hauer <s.hauer@pengutronix.de>
+ */
+
++#define DEBUG
+ #include <linux/module.h>
+ #include <linux/ioport.h>
+ #include <linux/netdevice.h>
+@@ -125,6 +126,8 @@
+ struct delayed_work phy_poll;
+ struct net_device *ndev;
+
++ struct delayed_work irq_poll; /* for use in irq polling mode */
++
+ spinlock_t lock;
+
+ struct mii_if_info mii;
+@@ -824,6 +827,8 @@
+ netif_stop_queue(dev);
+ dm9000_reset(db);
+ dm9000_init_dm9000(dev);
++ dm9000_reset(db);
++ dm9000_init_dm9000(dev);
+ /* We can accept TX packets again */
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+@@ -895,6 +900,12 @@
+ /* free this SKB */
+ dev_kfree_skb(skb);
+
++ /* directly poll afterwards */
++ if (dev->irq == -1) {
++ cancel_delayed_work(&db->irq_poll);
++ schedule_delayed_work(&db->irq_poll, 1);
++ }
++
+ return NETDEV_TX_OK;
+ }
+
+@@ -1136,6 +1147,18 @@
+ }
+ #endif
+
++static void dm9000_poll_irq(struct work_struct *w)
++{
++ struct delayed_work *dw = to_delayed_work(w);
++ board_info_t *db = container_of(dw, board_info_t, irq_poll);
++ struct net_device *ndev = db->ndev;
++
++ dm9000_interrupt(0, ndev);
++
++ if (netif_running(ndev))
++ schedule_delayed_work(&db->irq_poll, HZ /100);
++}
++
+ /*
+ * Open the interface.
+ * The interface is opened whenever "ifconfig" actives it.
+@@ -1149,14 +1172,15 @@
+ if (netif_msg_ifup(db))
+ dev_dbg(db->dev, "enabling %s\n", dev->name);
+
+- /* If there is no IRQ type specified, default to something that
+- * may work, and tell the user that this is a problem */
++ if (dev->irq != -1) {
++ /* If there is no IRQ type specified, default to something that
++ * may work, and tell the user that this is a problem */
+
+- if (irqflags == IRQF_TRIGGER_NONE)
+- dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
+-
+- irqflags |= IRQF_SHARED;
++ if (irqflags == IRQF_TRIGGER_NONE)
++ dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
+
++ irqflags |= IRQF_SHARED;
++ }
+ /* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */
+ iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */
+ mdelay(1); /* delay needs by DM9000B */
+@@ -1165,8 +1189,14 @@
+ dm9000_reset(db);
+ dm9000_init_dm9000(dev);
+
+- if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
+- return -EAGAIN;
++ /* testing: init a second time */
++ dm9000_reset(db);
++ dm9000_init_dm9000(dev);
++
++ if (dev->irq != -1) {
++ if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
++ return -EAGAIN;
++ }
+
+ /* Init driver variable */
+ db->dbug_cnt = 0;
+@@ -1174,6 +1204,9 @@
+ mii_check_media(&db->mii, netif_msg_link(db), 1);
+ netif_start_queue(dev);
+
++ if (dev->irq == -1)
++ schedule_delayed_work(&db->irq_poll, HZ / 100);
++
+ dm9000_schedule_poll(db);
+
+ return 0;
+@@ -1371,6 +1404,7 @@
+ mutex_init(&db->addr_lock);
+
+ INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
++ INIT_DELAYED_WORK(&db->irq_poll, dm9000_poll_irq);
+
+ db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);