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path: root/drivers/net/can/sja1000/sja1000.c
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Diffstat (limited to 'drivers/net/can/sja1000/sja1000.c')
-rw-r--r--drivers/net/can/sja1000/sja1000.c126
1 files changed, 64 insertions, 62 deletions
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index e4df307eaa90..7164a999f50f 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -91,14 +91,14 @@ static void sja1000_write_cmdreg(struct sja1000_priv *priv, u8 val)
* the write_reg() operation - especially on SMP systems.
*/
spin_lock_irqsave(&priv->cmdreg_lock, flags);
- priv->write_reg(priv, REG_CMR, val);
- priv->read_reg(priv, SJA1000_REG_SR);
+ priv->write_reg(priv, SJA1000_CMR, val);
+ priv->read_reg(priv, SJA1000_SR);
spin_unlock_irqrestore(&priv->cmdreg_lock, flags);
}
static int sja1000_is_absent(struct sja1000_priv *priv)
{
- return (priv->read_reg(priv, REG_MOD) == 0xFF);
+ return (priv->read_reg(priv, SJA1000_MOD) == 0xFF);
}
static int sja1000_probe_chip(struct net_device *dev)
@@ -116,11 +116,11 @@ static int sja1000_probe_chip(struct net_device *dev)
static void set_reset_mode(struct net_device *dev)
{
struct sja1000_priv *priv = netdev_priv(dev);
- unsigned char status = priv->read_reg(priv, REG_MOD);
+ unsigned char status = priv->read_reg(priv, SJA1000_MOD);
int i;
/* disable interrupts */
- priv->write_reg(priv, REG_IER, IRQ_OFF);
+ priv->write_reg(priv, SJA1000_IER, IRQ_OFF);
for (i = 0; i < 100; i++) {
/* check reset bit */
@@ -129,9 +129,10 @@ static void set_reset_mode(struct net_device *dev)
return;
}
- priv->write_reg(priv, REG_MOD, MOD_RM); /* reset chip */
+ /* reset chip */
+ priv->write_reg(priv, SJA1000_MOD, MOD_RM);
udelay(10);
- status = priv->read_reg(priv, REG_MOD);
+ status = priv->read_reg(priv, SJA1000_MOD);
}
netdev_err(dev, "setting SJA1000 into reset mode failed!\n");
@@ -140,7 +141,7 @@ static void set_reset_mode(struct net_device *dev)
static void set_normal_mode(struct net_device *dev)
{
struct sja1000_priv *priv = netdev_priv(dev);
- unsigned char status = priv->read_reg(priv, REG_MOD);
+ unsigned char status = priv->read_reg(priv, SJA1000_MOD);
int i;
for (i = 0; i < 100; i++) {
@@ -149,22 +150,22 @@ static void set_normal_mode(struct net_device *dev)
priv->can.state = CAN_STATE_ERROR_ACTIVE;
/* enable interrupts */
if (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
- priv->write_reg(priv, REG_IER, IRQ_ALL);
+ priv->write_reg(priv, SJA1000_IER, IRQ_ALL);
else
- priv->write_reg(priv, REG_IER,
+ priv->write_reg(priv, SJA1000_IER,
IRQ_ALL & ~IRQ_BEI);
return;
}
/* set chip to normal mode */
if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
- priv->write_reg(priv, REG_MOD, MOD_LOM);
+ priv->write_reg(priv, SJA1000_MOD, MOD_LOM);
else
- priv->write_reg(priv, REG_MOD, 0x00);
+ priv->write_reg(priv, SJA1000_MOD, 0x00);
udelay(10);
- status = priv->read_reg(priv, REG_MOD);
+ status = priv->read_reg(priv, SJA1000_MOD);
}
netdev_err(dev, "setting SJA1000 into normal mode failed!\n");
@@ -179,9 +180,9 @@ static void sja1000_start(struct net_device *dev)
set_reset_mode(dev);
/* Clear error counters and error code capture */
- priv->write_reg(priv, REG_TXERR, 0x0);
- priv->write_reg(priv, REG_RXERR, 0x0);
- priv->read_reg(priv, REG_ECC);
+ priv->write_reg(priv, SJA1000_TXERR, 0x0);
+ priv->write_reg(priv, SJA1000_RXERR, 0x0);
+ priv->read_reg(priv, SJA1000_ECC);
/* leave reset mode */
set_normal_mode(dev);
@@ -217,8 +218,8 @@ static int sja1000_set_bittiming(struct net_device *dev)
netdev_info(dev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);
- priv->write_reg(priv, REG_BTR0, btr0);
- priv->write_reg(priv, REG_BTR1, btr1);
+ priv->write_reg(priv, SJA1000_BTR0, btr0);
+ priv->write_reg(priv, SJA1000_BTR1, btr1);
return 0;
}
@@ -228,8 +229,8 @@ static int sja1000_get_berr_counter(const struct net_device *dev,
{
struct sja1000_priv *priv = netdev_priv(dev);
- bec->txerr = priv->read_reg(priv, REG_TXERR);
- bec->rxerr = priv->read_reg(priv, REG_RXERR);
+ bec->txerr = priv->read_reg(priv, SJA1000_TXERR);
+ bec->rxerr = priv->read_reg(priv, SJA1000_RXERR);
return 0;
}
@@ -247,20 +248,20 @@ static void chipset_init(struct net_device *dev)
struct sja1000_priv *priv = netdev_priv(dev);
/* set clock divider and output control register */
- priv->write_reg(priv, REG_CDR, priv->cdr | CDR_PELICAN);
+ priv->write_reg(priv, SJA1000_CDR, priv->cdr | CDR_PELICAN);
/* set acceptance filter (accept all) */
- priv->write_reg(priv, REG_ACCC0, 0x00);
- priv->write_reg(priv, REG_ACCC1, 0x00);
- priv->write_reg(priv, REG_ACCC2, 0x00);
- priv->write_reg(priv, REG_ACCC3, 0x00);
+ priv->write_reg(priv, SJA1000_ACCC0, 0x00);
+ priv->write_reg(priv, SJA1000_ACCC1, 0x00);
+ priv->write_reg(priv, SJA1000_ACCC2, 0x00);
+ priv->write_reg(priv, SJA1000_ACCC3, 0x00);
- priv->write_reg(priv, REG_ACCM0, 0xFF);
- priv->write_reg(priv, REG_ACCM1, 0xFF);
- priv->write_reg(priv, REG_ACCM2, 0xFF);
- priv->write_reg(priv, REG_ACCM3, 0xFF);
+ priv->write_reg(priv, SJA1000_ACCM0, 0xFF);
+ priv->write_reg(priv, SJA1000_ACCM1, 0xFF);
+ priv->write_reg(priv, SJA1000_ACCM2, 0xFF);
+ priv->write_reg(priv, SJA1000_ACCM3, 0xFF);
- priv->write_reg(priv, REG_OCR, priv->ocr | OCR_MODE_NORMAL);
+ priv->write_reg(priv, SJA1000_OCR, priv->ocr | OCR_MODE_NORMAL);
}
/*
@@ -289,21 +290,21 @@ static netdev_tx_t sja1000_start_xmit(struct sk_buff *skb,
id = cf->can_id;
if (id & CAN_RTR_FLAG)
- fi |= FI_RTR;
+ fi |= SJA1000_FI_RTR;
if (id & CAN_EFF_FLAG) {
- fi |= FI_FF;
- dreg = EFF_BUF;
- priv->write_reg(priv, REG_FI, fi);
- priv->write_reg(priv, REG_ID1, (id & 0x1fe00000) >> (5 + 16));
- priv->write_reg(priv, REG_ID2, (id & 0x001fe000) >> (5 + 8));
- priv->write_reg(priv, REG_ID3, (id & 0x00001fe0) >> 5);
- priv->write_reg(priv, REG_ID4, (id & 0x0000001f) << 3);
+ fi |= SJA1000_FI_FF;
+ dreg = SJA1000_EFF_BUF;
+ priv->write_reg(priv, SJA1000_FI, fi);
+ priv->write_reg(priv, SJA1000_ID1, (id & 0x1fe00000) >> 21);
+ priv->write_reg(priv, SJA1000_ID2, (id & 0x001fe000) >> 13);
+ priv->write_reg(priv, SJA1000_ID3, (id & 0x00001fe0) >> 5);
+ priv->write_reg(priv, SJA1000_ID4, (id & 0x0000001f) << 3);
} else {
- dreg = SFF_BUF;
- priv->write_reg(priv, REG_FI, fi);
- priv->write_reg(priv, REG_ID1, (id & 0x000007f8) >> 3);
- priv->write_reg(priv, REG_ID2, (id & 0x00000007) << 5);
+ dreg = SJA1000_SFF_BUF;
+ priv->write_reg(priv, SJA1000_FI, fi);
+ priv->write_reg(priv, SJA1000_ID1, (id & 0x000007f8) >> 3);
+ priv->write_reg(priv, SJA1000_ID2, (id & 0x00000007) << 5);
}
for (i = 0; i < dlc; i++)
@@ -335,25 +336,25 @@ static void sja1000_rx(struct net_device *dev)
if (skb == NULL)
return;
- fi = priv->read_reg(priv, REG_FI);
+ fi = priv->read_reg(priv, SJA1000_FI);
- if (fi & FI_FF) {
+ if (fi & SJA1000_FI_FF) {
/* extended frame format (EFF) */
- dreg = EFF_BUF;
- id = (priv->read_reg(priv, REG_ID1) << (5 + 16))
- | (priv->read_reg(priv, REG_ID2) << (5 + 8))
- | (priv->read_reg(priv, REG_ID3) << 5)
- | (priv->read_reg(priv, REG_ID4) >> 3);
+ dreg = SJA1000_EFF_BUF;
+ id = (priv->read_reg(priv, SJA1000_ID1) << 21)
+ | (priv->read_reg(priv, SJA1000_ID2) << 13)
+ | (priv->read_reg(priv, SJA1000_ID3) << 5)
+ | (priv->read_reg(priv, SJA1000_ID4) >> 3);
id |= CAN_EFF_FLAG;
} else {
/* standard frame format (SFF) */
- dreg = SFF_BUF;
- id = (priv->read_reg(priv, REG_ID1) << 3)
- | (priv->read_reg(priv, REG_ID2) >> 5);
+ dreg = SJA1000_SFF_BUF;
+ id = (priv->read_reg(priv, SJA1000_ID1) << 3)
+ | (priv->read_reg(priv, SJA1000_ID2) >> 5);
}
cf->can_dlc = get_can_dlc(fi & 0x0F);
- if (fi & FI_RTR) {
+ if (fi & SJA1000_FI_RTR) {
id |= CAN_RTR_FLAG;
} else {
for (i = 0; i < cf->can_dlc; i++)
@@ -414,7 +415,7 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
priv->can.can_stats.bus_error++;
stats->rx_errors++;
- ecc = priv->read_reg(priv, REG_ECC);
+ ecc = priv->read_reg(priv, SJA1000_ECC);
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
@@ -448,7 +449,7 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
if (isrc & IRQ_ALI) {
/* arbitration lost interrupt */
netdev_dbg(dev, "arbitration lost interrupt\n");
- alc = priv->read_reg(priv, REG_ALC);
+ alc = priv->read_reg(priv, SJA1000_ALC);
priv->can.can_stats.arbitration_lost++;
stats->tx_errors++;
cf->can_id |= CAN_ERR_LOSTARB;
@@ -457,8 +458,8 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
if (state != priv->can.state && (state == CAN_STATE_ERROR_WARNING ||
state == CAN_STATE_ERROR_PASSIVE)) {
- uint8_t rxerr = priv->read_reg(priv, REG_RXERR);
- uint8_t txerr = priv->read_reg(priv, REG_TXERR);
+ uint8_t rxerr = priv->read_reg(priv, SJA1000_RXERR);
+ uint8_t txerr = priv->read_reg(priv, SJA1000_TXERR);
cf->can_id |= CAN_ERR_CRTL;
if (state == CAN_STATE_ERROR_WARNING) {
priv->can.can_stats.error_warning++;
@@ -494,15 +495,16 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id)
int n = 0;
/* Shared interrupts and IRQ off? */
- if (priv->read_reg(priv, REG_IER) == IRQ_OFF)
+ if (priv->read_reg(priv, SJA1000_IER) == IRQ_OFF)
return IRQ_NONE;
if (priv->pre_irq)
priv->pre_irq(priv);
- while ((isrc = priv->read_reg(priv, REG_IR)) && (n < SJA1000_MAX_IRQ)) {
+ while ((isrc = priv->read_reg(priv, SJA1000_IR)) &&
+ (n < SJA1000_MAX_IRQ)) {
n++;
- status = priv->read_reg(priv, SJA1000_REG_SR);
+ status = priv->read_reg(priv, SJA1000_SR);
/* check for absent controller due to hw unplug */
if (status == 0xFF && sja1000_is_absent(priv))
return IRQ_NONE;
@@ -519,7 +521,7 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id)
} else {
/* transmission complete */
stats->tx_bytes +=
- priv->read_reg(priv, REG_FI) & 0xf;
+ priv->read_reg(priv, SJA1000_FI) & 0xf;
stats->tx_packets++;
can_get_echo_skb(dev, 0);
}
@@ -530,7 +532,7 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id)
/* receive interrupt */
while (status & SR_RBS) {
sja1000_rx(dev);
- status = priv->read_reg(priv, SJA1000_REG_SR);
+ status = priv->read_reg(priv, SJA1000_SR);
/* check for absent controller */
if (status == 0xFF && sja1000_is_absent(priv))
return IRQ_NONE;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.