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authorIngo Molnar <mingo@elte.hu>2010-05-03 11:17:01 +0400
committerIngo Molnar <mingo@elte.hu>2010-05-03 11:17:01 +0400
commit53ba4f2fa73225113a488584df0d85d3cba52943 (patch)
treed85b984d9818abc3ccc0237eb53b710d9e96c39e /drivers/net/can/bfin_can.c
parentbd6d29c25bb1a24a4c160ec5de43e0004e01f72b (diff)
parent66f41d4c5c8a5deed66fdcc84509376c9a0bf9d8 (diff)
downloadlinux-53ba4f2fa73225113a488584df0d85d3cba52943.tar.xz
Merge commit 'v2.6.34-rc6' into core/locking
Diffstat (limited to 'drivers/net/can/bfin_can.c')
-rw-r--r--drivers/net/can/bfin_can.c104
1 files changed, 13 insertions, 91 deletions
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 0ec1524523cc..03489864376d 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -22,94 +22,12 @@
#include <linux/can/dev.h>
#include <linux/can/error.h>
+#include <asm/bfin_can.h>
#include <asm/portmux.h>
#define DRV_NAME "bfin_can"
#define BFIN_CAN_TIMEOUT 100
-
-/*
- * transmit and receive channels
- */
-#define TRANSMIT_CHL 24
-#define RECEIVE_STD_CHL 0
-#define RECEIVE_EXT_CHL 4
-#define RECEIVE_RTR_CHL 8
-#define RECEIVE_EXT_RTR_CHL 12
-#define MAX_CHL_NUMBER 32
-
-/*
- * bfin can registers layout
- */
-struct bfin_can_mask_regs {
- u16 aml;
- u16 dummy1;
- u16 amh;
- u16 dummy2;
-};
-
-struct bfin_can_channel_regs {
- u16 data[8];
- u16 dlc;
- u16 dummy1;
- u16 tsv;
- u16 dummy2;
- u16 id0;
- u16 dummy3;
- u16 id1;
- u16 dummy4;
-};
-
-struct bfin_can_regs {
- /*
- * global control and status registers
- */
- u16 mc1; /* offset 0 */
- u16 dummy1;
- u16 md1; /* offset 4 */
- u16 rsv1[13];
- u16 mbtif1; /* offset 0x20 */
- u16 dummy2;
- u16 mbrif1; /* offset 0x24 */
- u16 dummy3;
- u16 mbim1; /* offset 0x28 */
- u16 rsv2[11];
- u16 mc2; /* offset 0x40 */
- u16 dummy4;
- u16 md2; /* offset 0x44 */
- u16 dummy5;
- u16 trs2; /* offset 0x48 */
- u16 rsv3[11];
- u16 mbtif2; /* offset 0x60 */
- u16 dummy6;
- u16 mbrif2; /* offset 0x64 */
- u16 dummy7;
- u16 mbim2; /* offset 0x68 */
- u16 rsv4[11];
- u16 clk; /* offset 0x80 */
- u16 dummy8;
- u16 timing; /* offset 0x84 */
- u16 rsv5[3];
- u16 status; /* offset 0x8c */
- u16 dummy9;
- u16 cec; /* offset 0x90 */
- u16 dummy10;
- u16 gis; /* offset 0x94 */
- u16 dummy11;
- u16 gim; /* offset 0x98 */
- u16 rsv6[3];
- u16 ctrl; /* offset 0xa0 */
- u16 dummy12;
- u16 intr; /* offset 0xa4 */
- u16 rsv7[7];
- u16 esr; /* offset 0xb4 */
- u16 rsv8[37];
-
- /*
- * channel(mailbox) mask and message registers
- */
- struct bfin_can_mask_regs msk[MAX_CHL_NUMBER]; /* offset 0x100 */
- struct bfin_can_channel_regs chl[MAX_CHL_NUMBER]; /* offset 0x200 */
-};
+#define TX_ECHO_SKB_MAX 1
/*
* bfin can private data
@@ -162,7 +80,7 @@ static int bfin_can_set_bittiming(struct net_device *dev)
if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
timing |= SAM;
- bfin_write16(&reg->clk, clk);
+ bfin_write16(&reg->clock, clk);
bfin_write16(&reg->timing, timing);
dev_info(dev->dev.parent, "setting CLOCK=0x%04x TIMING=0x%04x\n",
@@ -184,11 +102,11 @@ static void bfin_can_set_reset_mode(struct net_device *dev)
bfin_write16(&reg->gim, 0);
/* reset can and enter configuration mode */
- bfin_write16(&reg->ctrl, SRS | CCR);
+ bfin_write16(&reg->control, SRS | CCR);
SSYNC();
- bfin_write16(&reg->ctrl, CCR);
+ bfin_write16(&reg->control, CCR);
SSYNC();
- while (!(bfin_read16(&reg->ctrl) & CCA)) {
+ while (!(bfin_read16(&reg->control) & CCA)) {
udelay(10);
if (--timeout == 0) {
dev_err(dev->dev.parent,
@@ -243,7 +161,7 @@ static void bfin_can_set_normal_mode(struct net_device *dev)
/*
* leave configuration mode
*/
- bfin_write16(&reg->ctrl, bfin_read16(&reg->ctrl) & ~CCR);
+ bfin_write16(&reg->control, bfin_read16(&reg->control) & ~CCR);
while (bfin_read16(&reg->status) & CCA) {
udelay(10);
@@ -318,6 +236,9 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
u16 val;
int i;
+ if (can_dropped_invalid_skb(dev, skb))
+ return NETDEV_TX_OK;
+
netif_stop_queue(dev);
/* fill id */
@@ -590,7 +511,7 @@ struct net_device *alloc_bfin_candev(void)
struct net_device *dev;
struct bfin_can_priv *priv;
- dev = alloc_candev(sizeof(*priv));
+ dev = alloc_candev(sizeof(*priv), TX_ECHO_SKB_MAX);
if (!dev)
return NULL;
@@ -600,6 +521,7 @@ 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.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
return dev;
}
@@ -721,7 +643,7 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
if (netif_running(dev)) {
/* enter sleep mode */
- bfin_write16(&reg->ctrl, bfin_read16(&reg->ctrl) | SMR);
+ bfin_write16(&reg->control, bfin_read16(&reg->control) | SMR);
SSYNC();
while (!(bfin_read16(&reg->intr) & SMACK)) {
udelay(10);