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path: root/drivers/net/ethernet/ti/davinci_emac.c
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Diffstat (limited to 'drivers/net/ethernet/ti/davinci_emac.c')
-rw-r--r--drivers/net/ethernet/ti/davinci_emac.c96
1 files changed, 75 insertions, 21 deletions
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index ea712512c7d..5fae4354722 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -62,6 +62,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
+#include <linux/of_mdio.h>
#include <linux/of_irq.h>
#include <linux/of_net.h>
@@ -343,9 +344,7 @@ struct emac_priv {
u32 multicast_hash_cnt[EMAC_NUM_MULTICAST_BITS];
u32 rx_addr_type;
const char *phy_id;
-#ifdef CONFIG_OF
struct device_node *phy_node;
-#endif
struct phy_device *phydev;
spinlock_t lock;
/*platform specific members*/
@@ -922,6 +921,16 @@ static void emac_int_disable(struct emac_priv *priv)
if (priv->int_disable)
priv->int_disable();
+ /* NOTE: Rx Threshold and Misc interrupts are not enabled */
+
+ /* ack rxen only then a new pulse will be generated */
+ emac_write(EMAC_DM646X_MACEOIVECTOR,
+ EMAC_DM646X_MAC_EOI_C0_RXEN);
+
+ /* ack txen- only then a new pulse will be generated */
+ emac_write(EMAC_DM646X_MACEOIVECTOR,
+ EMAC_DM646X_MAC_EOI_C0_TXEN);
+
local_irq_restore(flags);
} else {
@@ -951,15 +960,6 @@ static void emac_int_enable(struct emac_priv *priv)
* register */
/* NOTE: Rx Threshold and Misc interrupts are not enabled */
-
- /* ack rxen only then a new pulse will be generated */
- emac_write(EMAC_DM646X_MACEOIVECTOR,
- EMAC_DM646X_MAC_EOI_C0_RXEN);
-
- /* ack txen- only then a new pulse will be generated */
- emac_write(EMAC_DM646X_MACEOIVECTOR,
- EMAC_DM646X_MAC_EOI_C0_TXEN);
-
} else {
/* Set DM644x control registers for interrupt control */
emac_ctrl_write(EMAC_CTRL_EWCTL, 0x1);
@@ -1537,7 +1537,13 @@ static int emac_dev_open(struct net_device *ndev)
int i = 0;
struct emac_priv *priv = netdev_priv(ndev);
- pm_runtime_get(&priv->pdev->dev);
+ ret = pm_runtime_get_sync(&priv->pdev->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&priv->pdev->dev);
+ dev_err(&priv->pdev->dev, "%s: failed to get_sync(%d)\n",
+ __func__, ret);
+ return ret;
+ }
netif_carrier_off(ndev);
for (cnt = 0; cnt < ETH_ALEN; cnt++)
@@ -1596,8 +1602,20 @@ static int emac_dev_open(struct net_device *ndev)
cpdma_ctlr_start(priv->dma);
priv->phydev = NULL;
+
+ if (priv->phy_node) {
+ priv->phydev = of_phy_connect(ndev, priv->phy_node,
+ &emac_adjust_link, 0, 0);
+ if (!priv->phydev) {
+ dev_err(emac_dev, "could not connect to phy %s\n",
+ priv->phy_node->full_name);
+ ret = -ENODEV;
+ goto err;
+ }
+ }
+
/* use the first phy on the bus if pdata did not give us a phy id */
- if (!priv->phy_id) {
+ if (!priv->phydev && !priv->phy_id) {
struct device *phy;
phy = bus_find_device(&mdio_bus_type, NULL, NULL,
@@ -1606,7 +1624,7 @@ static int emac_dev_open(struct net_device *ndev)
priv->phy_id = dev_name(phy);
}
- if (priv->phy_id && *priv->phy_id) {
+ if (!priv->phydev && priv->phy_id && *priv->phy_id) {
priv->phydev = phy_connect(ndev, priv->phy_id,
&emac_adjust_link,
PHY_INTERFACE_MODE_MII);
@@ -1627,7 +1645,9 @@ static int emac_dev_open(struct net_device *ndev)
"(mii_bus:phy_addr=%s, id=%x)\n",
priv->phydev->drv->name, dev_name(&priv->phydev->dev),
priv->phydev->phy_id);
- } else {
+ }
+
+ if (!priv->phydev) {
/* No PHY , fix the link, speed and duplex settings */
dev_notice(emac_dev, "no phy, defaulting to 100/full\n");
priv->link = 1;
@@ -1724,6 +1744,15 @@ static struct net_device_stats *emac_dev_getnetstats(struct net_device *ndev)
struct emac_priv *priv = netdev_priv(ndev);
u32 mac_control;
u32 stats_clear_mask;
+ int err;
+
+ err = pm_runtime_get_sync(&priv->pdev->dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(&priv->pdev->dev);
+ dev_err(&priv->pdev->dev, "%s: failed to get_sync(%d)\n",
+ __func__, err);
+ return &ndev->stats;
+ }
/* update emac hardware stats and reset the registers*/
@@ -1766,6 +1795,8 @@ static struct net_device_stats *emac_dev_getnetstats(struct net_device *ndev)
ndev->stats.tx_fifo_errors += emac_read(EMAC_TXUNDERRUN);
emac_write(EMAC_TXUNDERRUN, stats_clear_mask);
+ pm_runtime_put(&priv->pdev->dev);
+
return &ndev->stats;
}
@@ -1859,7 +1890,7 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
static int davinci_emac_probe(struct platform_device *pdev)
{
int rc = 0;
- struct resource *res;
+ struct resource *res, *res_ctrl;
struct net_device *ndev;
struct emac_priv *priv;
unsigned long hw_ram_addr;
@@ -1876,6 +1907,7 @@ static int davinci_emac_probe(struct platform_device *pdev)
return -EBUSY;
}
emac_bus_frequency = clk_get_rate(emac_clk);
+ devm_clk_put(&pdev->dev, emac_clk);
/* TODO: Probe PHY here if possible */
@@ -1917,11 +1949,20 @@ static int davinci_emac_probe(struct platform_device *pdev)
rc = PTR_ERR(priv->remap_addr);
goto no_pdata;
}
+
+ res_ctrl = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res_ctrl) {
+ priv->ctrl_base =
+ devm_ioremap_resource(&pdev->dev, res_ctrl);
+ if (IS_ERR(priv->ctrl_base))
+ goto no_pdata;
+ } else {
+ priv->ctrl_base = priv->remap_addr + pdata->ctrl_mod_reg_offset;
+ }
+
priv->emac_base = priv->remap_addr + pdata->ctrl_reg_offset;
ndev->base_addr = (unsigned long)priv->remap_addr;
- priv->ctrl_base = priv->remap_addr + pdata->ctrl_mod_reg_offset;
-
hw_ram_addr = pdata->hw_ram_addr;
if (!hw_ram_addr)
hw_ram_addr = (u32 __force)res->start + pdata->ctrl_ram_offset;
@@ -1980,12 +2021,22 @@ static int davinci_emac_probe(struct platform_device *pdev)
ndev->ethtool_ops = &ethtool_ops;
netif_napi_add(ndev, &priv->napi, emac_poll, EMAC_POLL_WEIGHT);
+ pm_runtime_enable(&pdev->dev);
+ rc = pm_runtime_get_sync(&pdev->dev);
+ if (rc < 0) {
+ pm_runtime_put_noidle(&pdev->dev);
+ dev_err(&pdev->dev, "%s: failed to get_sync(%d)\n",
+ __func__, rc);
+ goto no_cpdma_chan;
+ }
+
/* register the network device */
SET_NETDEV_DEV(ndev, &pdev->dev);
rc = register_netdev(ndev);
if (rc) {
dev_err(&pdev->dev, "error in register_netdev\n");
rc = -ENODEV;
+ pm_runtime_put(&pdev->dev);
goto no_cpdma_chan;
}
@@ -1995,9 +2046,7 @@ static int davinci_emac_probe(struct platform_device *pdev)
"(regs: %p, irq: %d)\n",
(void *)priv->emac_base_phys, ndev->irq);
}
-
- pm_runtime_enable(&pdev->dev);
- pm_runtime_resume(&pdev->dev);
+ pm_runtime_put(&pdev->dev);
return 0;
@@ -2071,9 +2120,14 @@ static const struct emac_platform_data am3517_emac_data = {
.hw_ram_addr = 0x01e20000,
};
+static const struct emac_platform_data dm816_emac_data = {
+ .version = EMAC_VERSION_2,
+};
+
static const struct of_device_id davinci_emac_of_match[] = {
{.compatible = "ti,davinci-dm6467-emac", },
{.compatible = "ti,am3517-emac", .data = &am3517_emac_data, },
+ {.compatible = "ti,dm816-emac", .data = &dm816_emac_data, },
{},
};
MODULE_DEVICE_TABLE(of, davinci_emac_of_match);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 05:05:12 +0000