Store MSB of timestamp, provided from the device via the clock overflow
event, for usbcan devices (M16C).
Signed-off-by: Jimmy Assarsson <extja@xxxxxxxxxx>
---
drivers/net/can/usb/kvaser_usb/kvaser_usb.h | 1 +
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 8 +++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb.h b/drivers/net/can/usb/kvaser_usb/kvaser_usb.h
index f5868e0b3b23..5552140c0869 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb.h
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb.h
@@ -70,6 +70,7 @@ struct kvaser_usb_dev_card_data {
u32 ctrlmode_supported;
u32 capabilities;
struct kvaser_usb_dev_card_data_hydra hydra;
+ u32 usbcan_timestamp_msb;
};
/* Context for an outstanding, not yet ACKed, transmission */
diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
index 98bd6cfca2ca..9b75f240485d 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -119,6 +119,9 @@
/* Extended CAN identifier flag */
#define KVASER_EXTENDED_FRAME BIT(31)
+/* USBCanII timestamp */
+#define KVASER_USB_USBCAN_CLK_OVERFLOW_MASK GENMASK(31, 16)
+
struct kvaser_cmd_simple {
u8 tid;
u8 channel;
@@ -1576,7 +1579,7 @@ static void kvaser_usb_leaf_get_busparams_reply(const struct kvaser_usb *dev,
complete(&priv->get_busparams_comp);
}
-static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
+static void kvaser_usb_leaf_handle_command(struct kvaser_usb *dev,
const struct kvaser_cmd *cmd)
{
if (kvaser_usb_leaf_verify_size(dev, cmd) < 0)
@@ -1625,6 +1628,9 @@ static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
case CMD_USBCAN_CLOCK_OVERFLOW_EVENT:
if (dev->driver_info->family != KVASER_USBCAN)
goto warn;
+ dev->card_data.usbcan_timestamp_msb =
+ le32_to_cpu(cmd->u.usbcan.clk_overflow_event.time) &
+ KVASER_USB_USBCAN_CLK_OVERFLOW_MASK;
break;
/* Ignored commands */
--
2.45.2
