can/usb/ucan.c

24  *   error frames (see uapi/linux/can/error.h) and sends it using the
28 #include <linux/can.h>
29 #include <linux/can/dev.h>
30 #include <linux/can/error.h>
79 	/* start the can transceiver - val defines the operation mode */
81 	/* cancel pending transmissions and stop the can transceiver */
83 	/* send can transceiver into low-power sleep mode */
85 	/* wake up can transceiver from low-power sleep mode */
87 	/* reset the can transceiver */
89 	/* get piece of info from the can transceiver - subcmd defines what
276 	struct can_priv can;
282 	/* lock for can->echo_skb (used around
452 	up->can.clock.freq = le32_to_cpu(device_info->freq);
466 	up->can.ctrlmode_supported = 0;
469 		up->can.ctrlmode_supported |= CAN_CTRLMODE_LOOPBACK;
471 		up->can.ctrlmode_supported |= CAN_CTRLMODE_LISTENONLY;
473 		up->can.ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES;
475 		up->can.ctrlmode_supported |= CAN_CTRLMODE_ONE_SHOT;
477 		up->can.ctrlmode_supported |= CAN_CTRLMODE_BERR_REPORTING;
481  * Returns true if the can state has changed.
487 	enum can_state new_state = up->can.state;
489 	struct can_device_stats *can_stats = &up->can.can_stats;
532 	if (up->can.state == new_state)
536 	if (up->can.state > new_state) {
537 		up->can.state = new_state;
542 	up->can.state = new_state;
560 /* Callback on reception of a can frame via the IN endpoint
588 		if (!(up->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING) &&
613 	/* fill the can frame */
982 	if (up->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
984 	if (up->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
986 	if (up->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
988 	if (up->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT)
1016 	up->can.state = CAN_STATE_ERROR_ACTIVE;
1110 /* callback when Linux needs to send a can frame */
1138 	/* put the skb on can loopback stack */
1200 	up->can.state = CAN_STATE_STOPPED;
1208 	/* stop and reset can device */
1253 	cmd_set_bittiming->tq = cpu_to_le32(up->can.bittiming.tq);
1254 	cmd_set_bittiming->brp = cpu_to_le16(up->can.bittiming.brp);
1256 	    cpu_to_le16(up->can.bittiming.sample_point);
1257 	cmd_set_bittiming->prop_seg = up->can.bittiming.prop_seg;
1258 	cmd_set_bittiming->phase_seg1 = up->can.bittiming.phase_seg1;
1259 	cmd_set_bittiming->phase_seg2 = up->can.bittiming.phase_seg2;
1260 	cmd_set_bittiming->sjw = up->can.bittiming.sjw;
1268  * Called when the user runs "ip link set can1 type can restart".
1281 		up->can.state = CAN_STATE_ERROR_ACTIVE;
1283 		/* check if queue can be restarted,
1512 	up->can.state = CAN_STATE_STOPPED;
1513 	up->can.bittiming_const = &up->device_info.bittiming_const;
1514 	up->can.do_set_bittiming = ucan_set_bittiming;
1515 	up->can.do_set_mode = &ucan_set_mode;
1549 	up->can.state = CAN_STATE_STOPPED;