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path: root/drivers/net/smsc911x.c
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Diffstat (limited to 'drivers/net/smsc911x.c')
-rw-r--r--drivers/net/smsc911x.c61
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index eb7db03..3cff840 100644
--- a/drivers/net/smsc911x.c
+++ b/drivers/net/smsc911x.c
@@ -47,6 +47,7 @@
#include <linux/bitops.h>
#include <linux/irq.h>
#include <linux/io.h>
+#include <linux/swab.h>
#include <linux/phy.h>
#include <linux/smsc911x.h>
#include "smsc911x.h"
@@ -175,6 +176,12 @@ static inline void
smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf,
unsigned int wordcount)
{
+ if (pdata->config.flags & SMSC911X_SWAP_FIFO) {
+ while (wordcount--)
+ smsc911x_reg_write(pdata, TX_DATA_FIFO, swab32(*buf++));
+ return;
+ }
+
if (pdata->config.flags & SMSC911X_USE_32BIT) {
writesl(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount);
return;
@@ -194,6 +201,12 @@ static inline void
smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf,
unsigned int wordcount)
{
+ if (pdata->config.flags & SMSC911X_SWAP_FIFO) {
+ while (wordcount--)
+ *buf++ = swab32(smsc911x_reg_read(pdata, RX_DATA_FIFO));
+ return;
+ }
+
if (pdata->config.flags & SMSC911X_USE_32BIT) {
readsl(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount);
return;
@@ -1963,7 +1976,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev)
retval = -ENODEV;
goto out_0;
}
- res_size = res->end - res->start;
+ res_size = res->end - res->start + 1;
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!irq_res) {
@@ -2096,12 +2109,58 @@ out_0:
return retval;
}
+#ifdef CONFIG_PM
+/* This implementation assumes the devices remains powered on its VDDVARIO
+ * pins during suspend. */
+
+static int smsc911x_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ /* enable wake on LAN, energy detection and the external PME
+ * signal. */
+ smsc911x_reg_write(pdata, PMT_CTRL,
+ PMT_CTRL_PM_MODE_D1_ | PMT_CTRL_WOL_EN_ |
+ PMT_CTRL_ED_EN_ | PMT_CTRL_PME_EN_);
+
+ return 0;
+}
+
+static int smsc911x_resume(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int to = 100;
+
+ /* Note 3.11 from the datasheet:
+ * "When the LAN9220 is in a power saving state, a write of any
+ * data to the BYTE_TEST register will wake-up the device."
+ */
+ smsc911x_reg_write(pdata, BYTE_TEST, 0);
+
+ /* poll the READY bit in PMT_CTRL. Any other access to the device is
+ * forbidden while this bit isn't set. Try for 100ms and return -EIO
+ * if it failed. */
+ while (!(smsc911x_reg_read(pdata, PMT_CTRL) & PMT_CTRL_READY_) && --to)
+ udelay(1000);
+
+ return (to == 0) ? -EIO : 0;
+}
+
+#else
+#define smsc911x_suspend NULL
+#define smsc911x_resume NULL
+#endif
+
static struct platform_driver smsc911x_driver = {
.probe = smsc911x_drv_probe,
.remove = smsc911x_drv_remove,
.driver = {
.name = SMSC_CHIPNAME,
},
+ .suspend = smsc911x_suspend,
+ .resume = smsc911x_resume,
};
/* Entry point for loading the module */
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