bfin_can: rewrite the blackfin style of read/write to common ones

Replace the blackfin arch dependent style of bfin_read/bfin_write with
common readw/writew

Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index e7a6363..9cbf615 100644 (file)
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -78,8 +78,8 @@ static int bfin_can_set_bittiming(struct net_device *dev)
        if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
                timing |= SAM;
 
-       bfin_write(&reg->clock, clk);
-       bfin_write(&reg->timing, timing);
+       writew(clk, &reg->clock);
+       writew(timing, &reg->timing);
 
        netdev_info(dev, "setting CLOCK=0x%04x TIMING=0x%04x\n", clk, timing);
 
@@ -94,16 +94,14 @@ static void bfin_can_set_reset_mode(struct net_device *dev)
        int i;
 
        /* disable interrupts */
-       bfin_write(&reg->mbim1, 0);
-       bfin_write(&reg->mbim2, 0);
-       bfin_write(&reg->gim, 0);
+       writew(0, &reg->mbim1);
+       writew(0, &reg->mbim2);
+       writew(0, &reg->gim);
 
        /* reset can and enter configuration mode */
-       bfin_write(&reg->control, SRS | CCR);
-       SSYNC();
-       bfin_write(&reg->control, CCR);
-       SSYNC();
-       while (!(bfin_read(&reg->control) & CCA)) {
+       writew(SRS | CCR, &reg->control);
+       writew(CCR, &reg->control);
+       while (!(readw(&reg->control) & CCA)) {
                udelay(10);
                if (--timeout == 0) {
                        netdev_err(dev, "fail to enter configuration mode\n");
@@ -116,34 +114,33 @@ static void bfin_can_set_reset_mode(struct net_device *dev)
         * by writing to CAN Mailbox Configuration Registers 1 and 2
         * For all bits: 0 - Mailbox disabled, 1 - Mailbox enabled
         */
-       bfin_write(&reg->mc1, 0);
-       bfin_write(&reg->mc2, 0);
+       writew(0, &reg->mc1);
+       writew(0, &reg->mc2);
 
        /* Set Mailbox Direction */
-       bfin_write(&reg->md1, 0xFFFF);   /* mailbox 1-16 are RX */
-       bfin_write(&reg->md2, 0);   /* mailbox 17-32 are TX */
+       writew(0xFFFF, &reg->md1);   /* mailbox 1-16 are RX */
+       writew(0, &reg->md2);   /* mailbox 17-32 are TX */
 
        /* RECEIVE_STD_CHL */
        for (i = 0; i < 2; i++) {
-               bfin_write(&reg->chl[RECEIVE_STD_CHL + i].id0, 0);
-               bfin_write(&reg->chl[RECEIVE_STD_CHL + i].id1, AME);
-               bfin_write(&reg->chl[RECEIVE_STD_CHL + i].dlc, 0);
-               bfin_write(&reg->msk[RECEIVE_STD_CHL + i].amh, 0x1FFF);
-               bfin_write(&reg->msk[RECEIVE_STD_CHL + i].aml, 0xFFFF);
+               writew(0, &reg->chl[RECEIVE_STD_CHL + i].id0);
+               writew(AME, &reg->chl[RECEIVE_STD_CHL + i].id1);
+               writew(0, &reg->chl[RECEIVE_STD_CHL + i].dlc);
+               writew(0x1FFF, &reg->msk[RECEIVE_STD_CHL + i].amh);
+               writew(0xFFFF, &reg->msk[RECEIVE_STD_CHL + i].aml);
        }
 
        /* RECEIVE_EXT_CHL */
        for (i = 0; i < 2; i++) {
-               bfin_write(&reg->chl[RECEIVE_EXT_CHL + i].id0, 0);
-               bfin_write(&reg->chl[RECEIVE_EXT_CHL + i].id1, AME | IDE);
-               bfin_write(&reg->chl[RECEIVE_EXT_CHL + i].dlc, 0);
-               bfin_write(&reg->msk[RECEIVE_EXT_CHL + i].amh, 0x1FFF);
-               bfin_write(&reg->msk[RECEIVE_EXT_CHL + i].aml, 0xFFFF);
+               writew(0, &reg->chl[RECEIVE_EXT_CHL + i].id0);
+               writew(AME | IDE, &reg->chl[RECEIVE_EXT_CHL + i].id1);
+               writew(0, &reg->chl[RECEIVE_EXT_CHL + i].dlc);
+               writew(0x1FFF, &reg->msk[RECEIVE_EXT_CHL + i].amh);
+               writew(0xFFFF, &reg->msk[RECEIVE_EXT_CHL + i].aml);
        }
 
-       bfin_write(&reg->mc2, BIT(TRANSMIT_CHL - 16));
-       bfin_write(&reg->mc1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL));
-       SSYNC();
+       writew(BIT(TRANSMIT_CHL - 16), &reg->mc2);
+       writew(BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL), &reg->mc1);
 
        priv->can.state = CAN_STATE_STOPPED;
 }
@@ -157,9 +154,9 @@ static void bfin_can_set_normal_mode(struct net_device *dev)
        /*
         * leave configuration mode
         */
-       bfin_write(&reg->control, bfin_read(&reg->control) & ~CCR);
+       writew(readw(&reg->control) & ~CCR, &reg->control);
 
-       while (bfin_read(&reg->status) & CCA) {
+       while (readw(&reg->status) & CCA) {
                udelay(10);
                if (--timeout == 0) {
                        netdev_err(dev, "fail to leave configuration mode\n");
@@ -170,26 +167,25 @@ static void bfin_can_set_normal_mode(struct net_device *dev)
        /*
         * clear _All_  tx and rx interrupts
         */
-       bfin_write(&reg->mbtif1, 0xFFFF);
-       bfin_write(&reg->mbtif2, 0xFFFF);
-       bfin_write(&reg->mbrif1, 0xFFFF);
-       bfin_write(&reg->mbrif2, 0xFFFF);
+       writew(0xFFFF, &reg->mbtif1);
+       writew(0xFFFF, &reg->mbtif2);
+       writew(0xFFFF, &reg->mbrif1);
+       writew(0xFFFF, &reg->mbrif2);
 
        /*
         * clear global interrupt status register
         */
-       bfin_write(&reg->gis, 0x7FF); /* overwrites with '1' */
+       writew(0x7FF, &reg->gis); /* overwrites with '1' */
 
        /*
         * Initialize Interrupts
         * - set bits in the mailbox interrupt mask register
         * - global interrupt mask
         */
-       bfin_write(&reg->mbim1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL));
-       bfin_write(&reg->mbim2, BIT(TRANSMIT_CHL - 16));
+       writew(BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL), &reg->mbim1);
+       writew(BIT(TRANSMIT_CHL - 16), &reg->mbim2);
 
-       bfin_write(&reg->gim, EPIM | BOIM | RMLIM);
-       SSYNC();
+       writew(EPIM | BOIM | RMLIM, &reg->gim);
 }
 
 static void bfin_can_start(struct net_device *dev)
@@ -226,7 +222,7 @@ static int bfin_can_get_berr_counter(const struct net_device *dev,
        struct bfin_can_priv *priv = netdev_priv(dev);
        struct bfin_can_regs __iomem *reg = priv->membase;
 
-       u16 cec = bfin_read(&reg->cec);
+       u16 cec = readw(&reg->cec);
 
        bec->txerr = cec >> 8;
        bec->rxerr = cec;
@@ -252,28 +248,28 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
        /* fill id */
        if (id & CAN_EFF_FLAG) {
-               bfin_write(&reg->chl[TRANSMIT_CHL].id0, id);
+               writew(id, &reg->chl[TRANSMIT_CHL].id0);
                val = ((id & 0x1FFF0000) >> 16) | IDE;
        } else
                val = (id << 2);
        if (id & CAN_RTR_FLAG)
                val |= RTR;
-       bfin_write(&reg->chl[TRANSMIT_CHL].id1, val | AME);
+       writew(val | AME, &reg->chl[TRANSMIT_CHL].id1);
 
        /* fill payload */
        for (i = 0; i < 8; i += 2) {
                val = ((7 - i) < dlc ? (data[7 - i]) : 0) +
                        ((6 - i) < dlc ? (data[6 - i] << 8) : 0);
-               bfin_write(&reg->chl[TRANSMIT_CHL].data[i], val);
+               writew(val, &reg->chl[TRANSMIT_CHL].data[i]);
        }
 
        /* fill data length code */
-       bfin_write(&reg->chl[TRANSMIT_CHL].dlc, dlc);
+       writew(dlc, &reg->chl[TRANSMIT_CHL].dlc);
 
        can_put_echo_skb(skb, dev, 0);
 
        /* set transmit request */
-       bfin_write(&reg->trs2, BIT(TRANSMIT_CHL - 16));
+       writew(BIT(TRANSMIT_CHL - 16), &reg->trs2);
 
        return 0;
 }
@@ -296,26 +292,26 @@ static void bfin_can_rx(struct net_device *dev, u16 isrc)
        /* get id */
        if (isrc & BIT(RECEIVE_EXT_CHL)) {
                /* extended frame format (EFF) */
-               cf->can_id = ((bfin_read(&reg->chl[RECEIVE_EXT_CHL].id1)
+               cf->can_id = ((readw(&reg->chl[RECEIVE_EXT_CHL].id1)
                             & 0x1FFF) << 16)
-                            + bfin_read(&reg->chl[RECEIVE_EXT_CHL].id0);
+                            + readw(&reg->chl[RECEIVE_EXT_CHL].id0);
                cf->can_id |= CAN_EFF_FLAG;
                obj = RECEIVE_EXT_CHL;
        } else {
                /* standard frame format (SFF) */
-               cf->can_id = (bfin_read(&reg->chl[RECEIVE_STD_CHL].id1)
+               cf->can_id = (readw(&reg->chl[RECEIVE_STD_CHL].id1)
                             & 0x1ffc) >> 2;
                obj = RECEIVE_STD_CHL;
        }
-       if (bfin_read(&reg->chl[obj].id1) & RTR)
+       if (readw(&reg->chl[obj].id1) & RTR)
                cf->can_id |= CAN_RTR_FLAG;
 
        /* get data length code */
-       cf->can_dlc = get_can_dlc(bfin_read(&reg->chl[obj].dlc) & 0xF);
+       cf->can_dlc = get_can_dlc(readw(&reg->chl[obj].dlc) & 0xF);
 
        /* get payload */
        for (i = 0; i < 8; i += 2) {
-               val = bfin_read(&reg->chl[obj].data[i]);
+               val = readw(&reg->chl[obj].data[i]);
                cf->data[7 - i] = (7 - i) < cf->can_dlc ? val : 0;
                cf->data[6 - i] = (6 - i) < cf->can_dlc ? (val >> 8) : 0;
        }
@@ -369,7 +365,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
 
        if (state != priv->can.state && (state == CAN_STATE_ERROR_WARNING ||
                                state == CAN_STATE_ERROR_PASSIVE)) {
-               u16 cec = bfin_read(&reg->cec);
+               u16 cec = readw(&reg->cec);
                u8 rxerr = cec;
                u8 txerr = cec >> 8;
 
@@ -420,23 +416,23 @@ static irqreturn_t bfin_can_interrupt(int irq, void *dev_id)
        struct net_device_stats *stats = &dev->stats;
        u16 status, isrc;
 
-       if ((irq == priv->tx_irq) && bfin_read(&reg->mbtif2)) {
+       if ((irq == priv->tx_irq) && readw(&reg->mbtif2)) {
                /* transmission complete interrupt */
-               bfin_write(&reg->mbtif2, 0xFFFF);
+               writew(0xFFFF, &reg->mbtif2);
                stats->tx_packets++;
-               stats->tx_bytes += bfin_read(&reg->chl[TRANSMIT_CHL].dlc);
+               stats->tx_bytes += readw(&reg->chl[TRANSMIT_CHL].dlc);
                can_get_echo_skb(dev, 0);
                netif_wake_queue(dev);
-       } else if ((irq == priv->rx_irq) && bfin_read(&reg->mbrif1)) {
+       } else if ((irq == priv->rx_irq) && readw(&reg->mbrif1)) {
                /* receive interrupt */
-               isrc = bfin_read(&reg->mbrif1);
-               bfin_write(&reg->mbrif1, 0xFFFF);
+               isrc = readw(&reg->mbrif1);
+               writew(0xFFFF, &reg->mbrif1);
                bfin_can_rx(dev, isrc);
-       } else if ((irq == priv->err_irq) && bfin_read(&reg->gis)) {
+       } else if ((irq == priv->err_irq) && readw(&reg->gis)) {
                /* error interrupt */
-               isrc = bfin_read(&reg->gis);
-               status = bfin_read(&reg->esr);
-               bfin_write(&reg->gis, 0x7FF);
+               isrc = readw(&reg->gis);
+               status = readw(&reg->esr);
+               writew(0x7FF, &reg->gis);
                bfin_can_err(dev, isrc, status);
        } else {
                return IRQ_NONE;
@@ -641,9 +637,8 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
 
        if (netif_running(dev)) {
                /* enter sleep mode */
-               bfin_write(&reg->control, bfin_read(&reg->control) | SMR);
-               SSYNC();
-               while (!(bfin_read(&reg->intr) & SMACK)) {
+               writew(readw(&reg->control) | SMR, &reg->control);
+               while (!(readw(&reg->intr) & SMACK)) {
                        udelay(10);
                        if (--timeout == 0) {
                                netdev_err(dev, "fail to enter sleep mode\n");
@@ -663,8 +658,7 @@ static int bfin_can_resume(struct platform_device *pdev)
 
        if (netif_running(dev)) {
                /* leave sleep mode */
-               bfin_write(&reg->intr, 0);
-               SSYNC();
+               writew(0, &reg->intr);
        }
 
        return 0;