[PATCH can-next v2 03/15] can: kvaser_usb: hydra: Add struct for Tx ACK commands

[Jimmy Assarsson <extja@xxxxxxxxxx>]

Add, struct kvaser_cmd_tx_ack, for standard Tx ACK commands.

Expand kvaser_usb_hydra_ktime_from_cmd() to extract timestamps from both
standard and extended Tx ACK commands. Unsupported commands are silently
ignored, and 0 is returned.

Signed-off-by: Jimmy Assarsson <extja@xxxxxxxxxx>
---
Changes in v2:
  - Utilize new helper functions, from
    can: kvaser_usb: Add helper functions to convert device timestamp into ktime

 .../net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
index 84f1f1f9c107..f102f9de7d16 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
@@ -261,6 +261,15 @@ struct kvaser_cmd_tx_can {
 	u8 reserved[11];
 } __packed;
 
+struct kvaser_cmd_tx_ack {
+	__le32 id;
+	u8 data[8];
+	u8 dlc;
+	u8 flags;
+	__le16 timestamp[3];
+	u8 reserved0[8];
+} __packed;
+
 struct kvaser_cmd_header {
 	u8 cmd_no;
 	/* The destination HE address is stored in 0..5 of he_addr.
@@ -297,6 +306,7 @@ struct kvaser_cmd {
 
 		struct kvaser_cmd_rx_can rx_can;
 		struct kvaser_cmd_tx_can tx_can;
+		struct kvaser_cmd_tx_ack tx_ack;
 	} __packed;
 } __packed;
 
@@ -530,9 +540,14 @@ static ktime_t kvaser_usb_hydra_ktime_from_cmd(const struct kvaser_usb_dev_cfg *
 	if (cmd->header.cmd_no == CMD_EXTENDED) {
 		struct kvaser_cmd_ext *cmd_ext = (struct kvaser_cmd_ext *)cmd;
 
-		hwtstamp = kvaser_usb_timestamp64_to_ktime(cfg, cmd_ext->rx_can.timestamp);
-	} else {
+		if (cmd_ext->cmd_no_ext == CMD_RX_MESSAGE_FD)
+			hwtstamp = kvaser_usb_timestamp64_to_ktime(cfg, cmd_ext->rx_can.timestamp);
+		else if (cmd_ext->cmd_no_ext == CMD_TX_ACKNOWLEDGE_FD)
+			hwtstamp = kvaser_usb_timestamp64_to_ktime(cfg, cmd_ext->tx_ack.timestamp);
+	} else if (cmd->header.cmd_no == CMD_RX_MESSAGE) {
 		hwtstamp = kvaser_usb_timestamp48_to_ktime(cfg, cmd->rx_can.timestamp);
+	} else if (cmd->header.cmd_no == CMD_TX_ACKNOWLEDGE) {
+		hwtstamp = kvaser_usb_timestamp48_to_ktime(cfg, cmd->tx_ack.timestamp);
 	}
 
 	return hwtstamp;
-- 
2.45.2