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Date: Sun, 17 Jun 2012 00:00:47 -0700
From: Steven King <sfking@...dc.com>
To: netdev@...r.kernel.org
Subject: [PATCH] fec: fix clk handling for Coldfire.
commit f4d40de39a23f0c39cca55ac63e1175c69c3d2f7
'net fec: do not depend on grouped clocks' broke fec for Coldfire.
Add #ifdef's to restore the working 3.4 clk handling for Coldfire.
Signed-off-by: Steven King <sfking@...dc.com>
---
drivers/net/ethernet/freescale/fec.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index ff7f4c5..f7b0372 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -207,8 +207,12 @@ struct fec_enet_private {
struct net_device *netdev;
+#ifdef CONFIG_COLDFIRE
+ struct clk *clk;
+#else
struct clk *clk_ipg;
struct clk *clk_ahb;
+#endif
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
unsigned char *tx_bounce[TX_RING_SIZE];
@@ -1066,7 +1070,11 @@ static int fec_enet_mii_init(struct platform_device *pdev)
* Reference Manual has an error on this, and gets fixed on i.MX6Q
* document.
*/
+#ifdef CONFIG_COLDFIRE
+ fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk), 5000000);
+#else
fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk_ahb), 5000000);
+#endif
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
fep->phy_speed--;
fep->phy_speed <<= 1;
@@ -1619,6 +1627,14 @@ fec_probe(struct platform_device *pdev)
goto failed_pin;
}
+#ifdef CONFIG_COLDFIRE
+ fep->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(fep->clk)) {
+ ret = PTR_ERR(fep->clk);
+ goto failed_clk;
+ }
+ clk_prepare_enable(fep->clk);
+#else
fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(fep->clk_ipg)) {
ret = PTR_ERR(fep->clk_ipg);
@@ -1633,6 +1649,7 @@ fec_probe(struct platform_device *pdev)
clk_prepare_enable(fep->clk_ahb);
clk_prepare_enable(fep->clk_ipg);
+#endif
ret = fec_enet_init(ndev);
if (ret)
@@ -1655,8 +1672,12 @@ failed_register:
fec_enet_mii_remove(fep);
failed_mii_init:
failed_init:
+#ifdef CONFIG_COLDFIRE
+ clk_disable_unprepare(fep->clk);
+#else
clk_disable_unprepare(fep->clk_ahb);
clk_disable_unprepare(fep->clk_ipg);
+#endif
failed_pin:
failed_clk:
for (i = 0; i < FEC_IRQ_NUM; i++) {
@@ -1689,8 +1710,12 @@ fec_drv_remove(struct platform_device *pdev)
if (irq > 0)
free_irq(irq, ndev);
}
+#ifdef CONFIG_COLDFIRE
+ clk_disable_unprepare(fep->clk);
+#else
clk_disable_unprepare(fep->clk_ahb);
clk_disable_unprepare(fep->clk_ipg);
+#endif
iounmap(fep->hwp);
free_netdev(ndev);
@@ -1714,8 +1739,12 @@ fec_suspend(struct device *dev)
fec_stop(ndev);
netif_device_detach(ndev);
}
+#ifdef CONFIG_COLDFIRE
+ clk_disable_unprepare(fep->clk);
+#else
clk_disable_unprepare(fep->clk_ahb);
clk_disable_unprepare(fep->clk_ipg);
+#endif
return 0;
}
@@ -1726,8 +1755,12 @@ fec_resume(struct device *dev)
struct net_device *ndev = dev_get_drvdata(dev);
struct fec_enet_private *fep = netdev_priv(ndev);
+#ifdef CONFIG_COLDFIRE
+ clk_prepare_enable(fep->clk);
+#else
clk_prepare_enable(fep->clk_ahb);
clk_prepare_enable(fep->clk_ipg);
+#endif
if (netif_running(ndev)) {
fec_restart(ndev, fep->full_duplex);
netif_device_attach(ndev);
--
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