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path: root/drivers/net/can/bfin_can.c
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Diffstat (limited to 'drivers/net/can/bfin_can.c')
-rw-r--r--drivers/net/can/bfin_can.c65
1 files changed, 37 insertions, 28 deletions
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 349e0fabb63..543ecceb33e 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -9,7 +9,6 @@
*/
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/bitops.h>
#include <linux/interrupt.h>
@@ -44,7 +43,7 @@ struct bfin_can_priv {
/*
* bfin can timing parameters
*/
-static struct can_bittiming_const bfin_can_bittiming_const = {
+static const struct can_bittiming_const bfin_can_bittiming_const = {
.name = DRV_NAME,
.tseg1_min = 1,
.tseg1_max = 16,
@@ -82,8 +81,7 @@ static int bfin_can_set_bittiming(struct net_device *dev)
bfin_write(&reg->clock, clk);
bfin_write(&reg->timing, timing);
- dev_info(dev->dev.parent, "setting CLOCK=0x%04x TIMING=0x%04x\n",
- clk, timing);
+ netdev_info(dev, "setting CLOCK=0x%04x TIMING=0x%04x\n", clk, timing);
return 0;
}
@@ -108,8 +106,7 @@ static void bfin_can_set_reset_mode(struct net_device *dev)
while (!(bfin_read(&reg->control) & CCA)) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to enter configuration mode\n");
+ netdev_err(dev, "fail to enter configuration mode\n");
BUG();
}
}
@@ -165,8 +162,7 @@ static void bfin_can_set_normal_mode(struct net_device *dev)
while (bfin_read(&reg->status) & CCA) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to leave configuration mode\n");
+ netdev_err(dev, "fail to leave configuration mode\n");
BUG();
}
}
@@ -224,6 +220,20 @@ static int bfin_can_set_mode(struct net_device *dev, enum can_mode mode)
return 0;
}
+static int bfin_can_get_berr_counter(const struct net_device *dev,
+ struct can_berr_counter *bec)
+{
+ struct bfin_can_priv *priv = netdev_priv(dev);
+ struct bfin_can_regs __iomem *reg = priv->membase;
+
+ u16 cec = bfin_read(&reg->cec);
+
+ bec->txerr = cec >> 8;
+ bec->rxerr = cec;
+
+ return 0;
+}
+
static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bfin_can_priv *priv = netdev_priv(dev);
@@ -331,7 +341,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
if (isrc & RMLIS) {
/* data overrun interrupt */
- dev_dbg(dev->dev.parent, "data overrun interrupt\n");
+ netdev_dbg(dev, "data overrun interrupt\n");
cf->can_id |= CAN_ERR_CRTL;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
stats->rx_over_errors++;
@@ -339,7 +349,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
}
if (isrc & BOIS) {
- dev_dbg(dev->dev.parent, "bus-off mode interrupt\n");
+ netdev_dbg(dev, "bus-off mode interrupt\n");
state = CAN_STATE_BUS_OFF;
cf->can_id |= CAN_ERR_BUSOFF;
can_bus_off(dev);
@@ -347,13 +357,12 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
if (isrc & EPIS) {
/* error passive interrupt */
- dev_dbg(dev->dev.parent, "error passive interrupt\n");
+ netdev_dbg(dev, "error passive interrupt\n");
state = CAN_STATE_ERROR_PASSIVE;
}
if ((isrc & EWTIS) || (isrc & EWRIS)) {
- dev_dbg(dev->dev.parent,
- "Error Warning Transmit/Receive Interrupt\n");
+ netdev_dbg(dev, "Error Warning Transmit/Receive Interrupt\n");
state = CAN_STATE_ERROR_WARNING;
}
@@ -402,7 +411,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
return 0;
}
-irqreturn_t bfin_can_interrupt(int irq, void *dev_id)
+static irqreturn_t bfin_can_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct bfin_can_priv *priv = netdev_priv(dev);
@@ -494,7 +503,7 @@ static int bfin_can_close(struct net_device *dev)
return 0;
}
-struct net_device *alloc_bfin_candev(void)
+static struct net_device *alloc_bfin_candev(void)
{
struct net_device *dev;
struct bfin_can_priv *priv;
@@ -509,6 +518,7 @@ struct net_device *alloc_bfin_candev(void)
priv->can.bittiming_const = &bfin_can_bittiming_const;
priv->can.do_set_bittiming = bfin_can_set_bittiming;
priv->can.do_set_mode = bfin_can_set_mode;
+ priv->can.do_get_berr_counter = bfin_can_get_berr_counter;
priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
return dev;
@@ -518,9 +528,10 @@ static const struct net_device_ops bfin_can_netdev_ops = {
.ndo_open = bfin_can_open,
.ndo_stop = bfin_can_close,
.ndo_start_xmit = bfin_can_start_xmit,
+ .ndo_change_mtu = can_change_mtu,
};
-static int __devinit bfin_can_probe(struct platform_device *pdev)
+static int bfin_can_probe(struct platform_device *pdev)
{
int err;
struct net_device *dev;
@@ -528,7 +539,7 @@ static int __devinit bfin_can_probe(struct platform_device *pdev)
struct resource *res_mem, *rx_irq, *tx_irq, *err_irq;
unsigned short *pdata;
- pdata = pdev->dev.platform_data;
+ pdata = dev_get_platdata(&pdev->dev);
if (!pdata) {
dev_err(&pdev->dev, "No platform data provided!\n");
err = -EINVAL;
@@ -569,7 +580,7 @@ static int __devinit bfin_can_probe(struct platform_device *pdev)
priv->pin_list = pdata;
priv->can.clock.freq = get_sclk();
- dev_set_drvdata(&pdev->dev, dev);
+ platform_set_drvdata(pdev, dev);
SET_NETDEV_DEV(dev, &pdev->dev);
dev->flags |= IFF_ECHO; /* we support local echo */
@@ -586,7 +597,7 @@ static int __devinit bfin_can_probe(struct platform_device *pdev)
dev_info(&pdev->dev,
"%s device registered"
"(&reg_base=%p, rx_irq=%d, tx_irq=%d, err_irq=%d, sclk=%d)\n",
- DRV_NAME, (void *)priv->membase, priv->rx_irq,
+ DRV_NAME, priv->membase, priv->rx_irq,
priv->tx_irq, priv->err_irq, priv->can.clock.freq);
return 0;
@@ -600,9 +611,9 @@ exit:
return err;
}
-static int __devexit bfin_can_remove(struct platform_device *pdev)
+static int bfin_can_remove(struct platform_device *pdev)
{
- struct net_device *dev = dev_get_drvdata(&pdev->dev);
+ struct net_device *dev = platform_get_drvdata(pdev);
struct bfin_can_priv *priv = netdev_priv(dev);
struct resource *res;
@@ -610,8 +621,6 @@ static int __devexit bfin_can_remove(struct platform_device *pdev)
unregister_candev(dev);
- dev_set_drvdata(&pdev->dev, NULL);
-
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
@@ -624,7 +633,7 @@ static int __devexit bfin_can_remove(struct platform_device *pdev)
#ifdef CONFIG_PM
static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
{
- struct net_device *dev = dev_get_drvdata(&pdev->dev);
+ struct net_device *dev = platform_get_drvdata(pdev);
struct bfin_can_priv *priv = netdev_priv(dev);
struct bfin_can_regs __iomem *reg = priv->membase;
int timeout = BFIN_CAN_TIMEOUT;
@@ -636,8 +645,7 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
while (!(bfin_read(&reg->intr) & SMACK)) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to enter sleep mode\n");
+ netdev_err(dev, "fail to enter sleep mode\n");
BUG();
}
}
@@ -648,7 +656,7 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
static int bfin_can_resume(struct platform_device *pdev)
{
- struct net_device *dev = dev_get_drvdata(&pdev->dev);
+ struct net_device *dev = platform_get_drvdata(pdev);
struct bfin_can_priv *priv = netdev_priv(dev);
struct bfin_can_regs __iomem *reg = priv->membase;
@@ -667,7 +675,7 @@ static int bfin_can_resume(struct platform_device *pdev)
static struct platform_driver bfin_can_driver = {
.probe = bfin_can_probe,
- .remove = __devexit_p(bfin_can_remove),
+ .remove = bfin_can_remove,
.suspend = bfin_can_suspend,
.resume = bfin_can_resume,
.driver = {
@@ -681,3 +689,4 @@ module_platform_driver(bfin_can_driver);
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Blackfin on-chip CAN netdevice driver");
+MODULE_ALIAS("platform:" DRV_NAME);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 04:03:12 +0000