Re: [PATCH can-next 10/15] can: kvaser_usb: leaf: Add structs for Tx ACK and clock overflow commands

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On Sat. 29 June 2024 at 04:56, Jimmy Assarsson <extja@xxxxxxxxxx> wrote:
> For usbcan devices (M16C), add struct usbcan_cmd_tx_acknowledge for Tx ACK
> commands and struct usbcan_cmd_clk_overflow_event for clock overflow event
> commands.
>
> Signed-off-by: Jimmy Assarsson <extja@xxxxxxxxxx>
> ---
>  .../net/can/usb/kvaser_usb/kvaser_usb_leaf.c  | 22 +++++++++++++++----
>  1 file changed, 18 insertions(+), 4 deletions(-)
>
> 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 c0a8713d8cf2..98bd6cfca2ca 100644
> --- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
> +++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
> @@ -242,6 +242,13 @@ struct leaf_cmd_tx_acknowledge {
>         u8 padding[2];
>  } __packed;
>
> +struct usbcan_cmd_tx_acknowledge {
> +       u8 channel;
> +       u8 tid;
> +       __le16 time;
> +       u8 padding[2];
> +} __packed;
> +
>  struct leaf_cmd_can_error_event {
>         u8 tid;
>         u8 flags;
> @@ -288,6 +295,12 @@ struct usbcan_cmd_error_event {
>         __le16 padding;
>  } __packed;
>
> +struct usbcan_cmd_clk_overflow_event {
> +       u8 tid;
> +       u8 padding;
> +       __le32 time;
> +} __packed;
> +
>  struct kvaser_cmd_ctrl_mode {
>         u8 tid;
>         u8 channel;
> @@ -363,6 +376,8 @@ struct kvaser_cmd {
>                         struct usbcan_cmd_chip_state_event chip_state_event;
>                         struct usbcan_cmd_can_error_event can_error_event;
>                         struct usbcan_cmd_error_event error_event;
> +                       struct usbcan_cmd_tx_acknowledge tx_ack;
> +                       struct usbcan_cmd_clk_overflow_event clk_overflow_event;
>                 } __packed usbcan;
>
>                 struct kvaser_cmd_tx_can tx_can;
> @@ -396,15 +411,14 @@ static const u8 kvaser_usb_leaf_cmd_sizes_usbcan[] = {
>         [CMD_START_CHIP_REPLY]          = kvaser_fsize(u.simple),
>         [CMD_STOP_CHIP_REPLY]           = kvaser_fsize(u.simple),
>         [CMD_GET_CARD_INFO_REPLY]       = kvaser_fsize(u.cardinfo),
> -       [CMD_TX_ACKNOWLEDGE]            = kvaser_fsize(u.tx_acknowledge_header),
> +       [CMD_TX_ACKNOWLEDGE]            = kvaser_fsize(u.usbcan.tx_ack),
>         [CMD_GET_SOFTWARE_INFO_REPLY]   = kvaser_fsize(u.usbcan.softinfo),
>         [CMD_RX_STD_MESSAGE]            = kvaser_fsize(u.usbcan.rx_can),
>         [CMD_RX_EXT_MESSAGE]            = kvaser_fsize(u.usbcan.rx_can),
>         [CMD_CHIP_STATE_EVENT]          = kvaser_fsize(u.usbcan.chip_state_event),
>         [CMD_CAN_ERROR_EVENT]           = kvaser_fsize(u.usbcan.can_error_event),
>         [CMD_ERROR_EVENT]               = kvaser_fsize(u.usbcan.error_event),
> -       /* ignored events: */
> -       [CMD_USBCAN_CLOCK_OVERFLOW_EVENT] = CMD_SIZE_ANY,
> +       [CMD_USBCAN_CLOCK_OVERFLOW_EVENT] = kvaser_fsize(u.usbcan.clk_overflow_event),
>  };
>
>  /* Summary of a kvaser error event, for a unified Leaf/Usbcan error
> @@ -1608,12 +1622,12 @@ static void kvaser_usb_leaf_handle_command(const struct kvaser_usb *dev,
>                 kvaser_usb_leaf_get_busparams_reply(dev, cmd);
>                 break;
>
> -       /* Ignored commands */
>         case CMD_USBCAN_CLOCK_OVERFLOW_EVENT:
>                 if (dev->driver_info->family != KVASER_USBCAN)
>                         goto warn;
>                 break;

I did not understand this part. If the overflow event is now handled,
why do you still have the

  goto warn

?

Shouldn't you dispatch the command here?

> +       /* Ignored commands */
>         case CMD_FLUSH_QUEUE_REPLY:
>                 if (dev->driver_info->family != KVASER_LEAF)
>                         goto warn;
> --
> 2.45.2
>
>




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