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Date: Fri, 29 May 2009 09:41:48 -0400
From: Mike Frysinger <vapier@...too.org>
To: netdev@...r.kernel.org
Cc: uclinux-dist-devel@...ckfin.uclinux.org,
Graf Yang <graf.yang@...log.com>
Subject: [PATCH 4/4 v2] netdev: bfin_mac: add Blackfin MII bus to platform bus to allow DSA access
From: Graf Yang <graf.yang@...log.com>
When we register the MII bus to the platfrom bus, the Distributed Switch
Architecture can hook in transparently.
Signed-off-by: Graf Yang <graf.yang@...log.com>
Signed-off-by: Mike Frysinger <vapier@...too.org>
---
v2
- squash patches 4 & 5 in previous series
drivers/net/bfin_mac.c | 117 ++++++++++++++++++++++++++++++++++-------------
1 files changed, 84 insertions(+), 33 deletions(-)
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index f0f1eb9..955a469 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -971,7 +971,8 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
{
struct net_device *ndev;
struct bfin_mac_local *lp;
- int rc, i;
+ struct platform_device *pd;
+ int rc;
ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
if (!ndev) {
@@ -996,13 +997,6 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
goto out_err_probe_mac;
}
- /* set the GPIO pins to Ethernet mode */
- rc = peripheral_request_list(pin_req, DRV_NAME);
- if (rc) {
- dev_err(&pdev->dev, "Requesting peripherals failed!\n");
- rc = -EFAULT;
- goto out_err_setup_pin_mux;
- }
/*
* Is it valid? (Did bootloader initialize it?)
@@ -1018,26 +1012,14 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
setup_mac_addr(ndev->dev_addr);
- /* MDIO bus initial */
- lp->mii_bus = mdiobus_alloc();
- if (lp->mii_bus == NULL)
- goto out_err_mdiobus_alloc;
-
- lp->mii_bus->priv = ndev;
- lp->mii_bus->read = bfin_mdiobus_read;
- lp->mii_bus->write = bfin_mdiobus_write;
- lp->mii_bus->reset = bfin_mdiobus_reset;
- lp->mii_bus->name = "bfin_mac_mdio";
- snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "0");
- lp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
- for (i = 0; i < PHY_MAX_ADDR; ++i)
- lp->mii_bus->irq[i] = PHY_POLL;
-
- rc = mdiobus_register(lp->mii_bus);
- if (rc) {
- dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
- goto out_err_mdiobus_register;
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
+ rc = -ENODEV;
+ goto out_err_probe_mac;
}
+ pd = pdev->dev.platform_data;
+ lp->mii_bus = platform_get_drvdata(pd);
+ lp->mii_bus->priv = ndev;
rc = mii_probe(ndev);
if (rc) {
@@ -1079,11 +1061,8 @@ out_err_reg_ndev:
out_err_request_irq:
out_err_mii_probe:
mdiobus_unregister(lp->mii_bus);
-out_err_mdiobus_register:
mdiobus_free(lp->mii_bus);
-out_err_mdiobus_alloc:
peripheral_free_list(pin_req);
-out_err_setup_pin_mux:
out_err_probe_mac:
platform_set_drvdata(pdev, NULL);
free_netdev(ndev);
@@ -1098,8 +1077,7 @@ static int __devexit bfin_mac_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
- mdiobus_unregister(lp->mii_bus);
- mdiobus_free(lp->mii_bus);
+ lp->mii_bus->priv = NULL;
unregister_netdev(ndev);
@@ -1137,6 +1115,74 @@ static int bfin_mac_resume(struct platform_device *pdev)
#define bfin_mac_resume NULL
#endif /* CONFIG_PM */
+static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
+{
+ struct mii_bus *miibus;
+ int rc, i;
+
+ /*
+ * We are setting up a network card,
+ * so set the GPIO pins to Ethernet mode
+ */
+ rc = peripheral_request_list(pin_req, DRV_NAME);
+ if (rc) {
+ dev_err(&pdev->dev, "Requesting peripherals failed!\n");
+ return rc;
+ }
+
+ rc = -ENOMEM;
+ miibus = mdiobus_alloc();
+ if (miibus == NULL)
+ goto out_err_alloc;
+ miibus->read = bfin_mdiobus_read;
+ miibus->write = bfin_mdiobus_write;
+ miibus->reset = bfin_mdiobus_reset;
+
+ miibus->parent = &pdev->dev;
+ miibus->name = "bfin_mii_bus";
+ snprintf(miibus->id, MII_BUS_ID_SIZE, "0");
+ miibus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ if (miibus->irq == NULL)
+ goto out_err_alloc;
+ for (i = 0; i < PHY_MAX_ADDR; ++i)
+ miibus->irq[i] = PHY_POLL;
+
+ rc = mdiobus_register(miibus);
+ if (rc) {
+ dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
+ goto out_err_mdiobus_register;
+ }
+
+ platform_set_drvdata(pdev, miibus);
+ return 0;
+
+out_err_mdiobus_register:
+ mdiobus_free(miibus);
+out_err_alloc:
+ peripheral_free_list(pin_req);
+
+ return rc;
+}
+
+static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
+{
+ struct mii_bus *miibus = platform_get_drvdata(pdev);
+ platform_set_drvdata(pdev, NULL);
+ mdiobus_unregister(miibus);
+ mdiobus_free(miibus);
+ peripheral_free_list(pin_req);
+ return 0;
+}
+
+static struct platform_driver bfin_mii_bus_driver = {
+ .probe = bfin_mii_bus_probe,
+ .remove = __devexit_p(bfin_mii_bus_remove),
+ .driver = {
+ .name = "bfin_mii_bus",
+ .owner = THIS_MODULE,
+ },
+};
+
static struct platform_driver bfin_mac_driver = {
.probe = bfin_mac_probe,
.remove = __devexit_p(bfin_mac_remove),
@@ -1150,7 +1196,11 @@ static struct platform_driver bfin_mac_driver = {
static int __init bfin_mac_init(void)
{
- return platform_driver_register(&bfin_mac_driver);
+ int ret;
+ ret = platform_driver_register(&bfin_mii_bus_driver);
+ if (!ret)
+ return platform_driver_register(&bfin_mac_driver);
+ return -ENODEV;
}
module_init(bfin_mac_init);
@@ -1158,6 +1208,7 @@ module_init(bfin_mac_init);
static void __exit bfin_mac_cleanup(void)
{
platform_driver_unregister(&bfin_mac_driver);
+ platform_driver_unregister(&bfin_mii_bus_driver);
}
module_exit(bfin_mac_cleanup);
--
1.6.3.1
--
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