[PATCH can-next 03/13] can: gs_usb: update USB protocol definitions contributed by Elmue firmware

The gs_usb compatible firmware by Elmue extended the USB protocol.

Document the newly added GS_CAN_FEATURE_ELM_* bits and the new
GS_USB_BREQ_ELM_GET_* USB requests along with some placeholders for future
extensions.

Link: https://github.com/Elmue/CANable-2.5-firmware-Slcan-and-Candlelight
Signed-off-by: Marc Kleine-Budde <[email protected]>
---
 drivers/net/can/usb/gs_usb.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index 2f55030a21a5..57062983b148 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -72,6 +72,23 @@ enum gs_usb_breq {
 	GS_USB_BREQ_SET_TERMINATION,
 	GS_USB_BREQ_GET_TERMINATION,
 	GS_USB_BREQ_GET_STATE,
+	__GS_USB_BREQ_PLACEHOLDER_15,
+	__GS_USB_BREQ_PLACEHOLDER_16,
+	__GS_USB_BREQ_PLACEHOLDER_17,
+	__GS_USB_BREQ_PLACEHOLDER_18,
+	__GS_USB_BREQ_PLACEHOLDER_19,
+	GS_USB_BREQ_ELM_GET_BOARDINFO = 20,
+	GS_USB_BREQ_ELM_SET_FILTER,
+	GS_USB_BREQ_ELM_GET_LASTERROR,
+	GS_USB_BREQ_ELM_SET_BUSLOADREPORT,
+	GS_USB_BREQ_ELM_SET_PINSTATUS,
+	GS_USB_BREQ_ELM_GET_PINSTATUS,
+	GS_USB_BREQ_ELM_READ_FLASH,
+	GS_USB_BREQ_ELM_WRITE_FLASH,
+	__GS_USB_BREQ_ELM_PLACEHOLDER_28,
+	__GS_USB_BREQ_ELM_PLACEHOLDER_29,
+	__GS_USB_BREQ_ELM_PLACEHOLDER_30,
+	__GS_USB_BREQ_ELM_PLACEHOLDER_31,
 };
 
 enum gs_can_mode {
@@ -168,7 +185,14 @@ struct gs_device_termination_state {
 #define GS_CAN_FEATURE_TERMINATION BIT(11)
 #define GS_CAN_FEATURE_BERR_REPORTING BIT(12)
 #define GS_CAN_FEATURE_GET_STATE BIT(13)
-#define GS_CAN_FEATURE_MASK GENMASK(13, 0)
+#define GS_CAN_FEATURE_ELM_PROTOCOL BIT(14)
+/* supported by Elmue firmware until 0x260528 (including) */
+#define GS_CAN_FEATURE_ELM_DISABLE_TX_ECHO BIT(15)
+/* supported by Elmue firmware since 0x260529 (including) */
+#define GS_CAN_FEATURE_ELM_DEV_FLAG_SEND_USB_BLOBS BIT(15)
+/* supported by Elmue firmware 0x260528 only */
+#define GS_CAN_FEATURE_ELM_DEV_FLAG_SEND_USB_BLOBS_260528 BIT(16)
+#define GS_CAN_FEATURE_MASK GENMASK(16, 0)
 
 /* internal quirks - keep in GS_CAN_FEATURE space for now */
 

-- 
2.53.0