netdev - [PATCH net-next 13/29] can: gs_usb: document GS_CAN_FEATURE_BERR

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Date:   Wed, 26 Oct 2022 10:39:51 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Jeroen Hofstee <jhofstee@...tronenergy.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 13/29] can: gs_usb: document GS_CAN_FEATURE_BERR_REPORTING

From: Jeroen Hofstee <jhofstee@...tronenergy.com>

Document the new feature ("GS_CAN_FEATURE_BERR_REPORTING") that
indicates that the bus error reporting in the CAN controller can
switched on and off with the GS_CAN_MODE_BERR_REPORTING mode bit in
the GS_USB_BREQ_MODE control message.

Signed-off-by: Jeroen Hofstee <jhofstee@...tronenergy.com>
Link: https://lore.kernel.org/all/20221019221016.1659260-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/usb/gs_usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index f9e2b394c71e..68e474a762c5 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -134,6 +134,7 @@ struct gs_device_config {
 /* GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX BIT(9) */
 /* GS_CAN_FEATURE_BT_CONST_EXT BIT(10) */
 /* GS_CAN_FEATURE_TERMINATION BIT(11) */
+#define GS_CAN_MODE_BERR_REPORTING BIT(12)
 
 struct gs_device_mode {
 	__le32 mode;
@@ -174,7 +175,8 @@ struct gs_device_termination_state {
 #define GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX BIT(9)
 #define GS_CAN_FEATURE_BT_CONST_EXT BIT(10)
 #define GS_CAN_FEATURE_TERMINATION BIT(11)
-#define GS_CAN_FEATURE_MASK GENMASK(11, 0)
+#define GS_CAN_FEATURE_BERR_REPORTING BIT(12)
+#define GS_CAN_FEATURE_MASK GENMASK(12, 0)
 
 /* internal quirks - keep in GS_CAN_FEATURE space for now */
 
-- 
2.35.1