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can: gs_usb: document the PAD_PKTS_TO_MAX_PKT_SIZE feature 

The widely used open source firmware candleLight supports padding the
USB packets to max packet size to improve performance on Windows
systems.

This patch documents the bit.

Link: https://lore.kernel.org/all/20220309124132.291861-12-mkl@pengutronix.de
Link: https://github.com/candle-usb/candleLight_fw/pull/7
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2021-11-07 14:52:10 +01:00
parent e0902cad4b
commit 4643e34ecc
1 changed files with 2 additions and 0 deletions
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2
drivers/net/can/usb/gs_usb.c
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@ -97,6 +97,7 @@ struct gs_device_config {
#define GS_CAN_MODE_HW_TIMESTAMP BIT(4)
/* GS_CAN_FEATURE_IDENTIFY BIT(5) */
/* GS_CAN_FEATURE_USER_ID BIT(6) */
#define GS_CAN_MODE_PAD_PKTS_TO_MAX_PKT_SIZE BIT(7)
struct gs_device_mode {
__le32 mode;
@ -128,6 +129,7 @@ struct gs_identify_mode {
#define GS_CAN_FEATURE_HW_TIMESTAMP BIT(4)
#define GS_CAN_FEATURE_IDENTIFY BIT(5)
#define GS_CAN_FEATURE_USER_ID BIT(6)
#define GS_CAN_FEATURE_PAD_PKTS_TO_MAX_PKT_SIZE BIT(7)
struct gs_device_bt_const {
__le32 feature;