sllin: switch to updated upstream

Changes:
- Switch the SRC_URI of the sllin driver recipe to point at the new
  revived upstream location, update to their latest commit to get
  newer kernel support, and drop all the now unnecessary local
  patches.
- Added a patch to fix compilation against 5.4 kernels before
  5.4.110.  This will be worked with upstream as time permits.
- Rename the sllin driver recipe with a _git suffix to match OE
  style expectations.
- Added the sllin driver to packagegroup-agl-demo as was being done
  in previous releases.
- Split the demo script + service unit and lin_config configuration
  out of the sllin driver recipe into a new sllin-demo recipe so
  that they're no longer conflated.  This should make it easier for
  others to reuse the sllin driver recipe.
- Update the SRC_URI and SRCREV of the lin_config recipe to also
  point at the new upstream location/version since it comes out of
  the same repository.
- Add the new master mode "-m" flag to the lin_config command line
  in the start_lin_demo.sh script (now in sllin-demo).  This turns
  out to be required for our demo usecase as upstream seem to have
  inadvertently changed the default behavior.

Bug-AGL: SPEC-4404

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: If42a825e65d93b3fa11cfddd5d6b33ec410f7cc4

1 files changed, 0 insertions, 176 deletions

diff --git a/recipes-kernel/sllin/files/0002_fix_null_operation_check.patch b/recipes-kernel/sllin/files/0002_fix_null_operation_check.patch
deleted file mode 100644
index 896e2680..00000000
--- a/recipes-kernel/sllin/files/0002_fix_null_operation_check.patch
+++ /dev/null
@@ -1,176 +0,0 @@
-diff --git a/sllin/sllin.c b/sllin/sllin.c
-index 2db896f..2969448 100644
---- a/sllin/sllin.c
-+++ b/sllin/sllin.c
-@@ -869,7 +869,6 @@ static int sllin_send_tx_buff(struct sllin *sl)
- #else
- 		remains = sl->tx_lim - sl->tx_cnt;
- #endif
--
- 		res = tty->ops->write(tty, sl->tx_buff + sl->tx_cnt, remains);
- 		if (res < 0)
- 			goto error_in_write;
-@@ -916,10 +915,25 @@ static int sllin_send_break(struct sllin *sl)
- 	unsigned long break_baud;
- 	int res;
- 
-+	netdev_dbg(sl->dev, "%s()#<BREAK_BY_BAUD>  invoke.\n", __func__);
-+	if (tty == NULL) {
-+		netdev_dbg(sl->dev, "%s() tty == NULL.\n", __func__);
-+		sl->lin_state = SLSTATE_IDLE;
-+		return -1;
-+	}
-+	if (tty->ops == NULL) {
-+		netdev_dbg(sl->dev, "%s() tty->ops == NULL.\n", __func__);
-+		sl->lin_state = SLSTATE_IDLE;
-+		return -1;
-+	}
- 	break_baud = ((sl->lin_baud * 2) / 3);
- 	sltty_change_speed(tty, break_baud);
- 
--	tty->ops->flush_buffer(tty);
-+	if (tty->ops->flush_buffer) {
-+		tty->ops->flush_buffer(tty);
-+	} else {
-+		netdev_dbg(sl->dev, "%s() tty->ops->flush_buffer is NULL.\n", __func__);
-+	}
- 	sl->rx_cnt = SLLIN_BUFF_BREAK;
- 
- 	sl->rx_expect = SLLIN_BUFF_BREAK + 1;
-@@ -943,6 +957,17 @@ static int sllin_send_break(struct sllin *sl)
- 	unsigned long usleep_range_min;
- 	unsigned long usleep_range_max;
- 
-+	netdev_dbg(sl->dev, "%s() invoke.\n", __func__);
-+	if (tty == NULL) {
-+		netdev_dbg(sl->dev, "%s() tty == NULL.\n", __func__);
-+		sl->lin_state = SLSTATE_IDLE;
-+		return -1;
-+	}
-+	if (tty->ops == NULL) {
-+		netdev_dbg(sl->dev, "%s() tty->ops == NULL.\n", __func__);
-+		sl->lin_state = SLSTATE_IDLE;
-+		return -1;
-+	}
- 	break_baud = ((sl->lin_baud * 2) / 3);
- 	sl->rx_cnt = SLLIN_BUFF_BREAK;
- 	sl->rx_expect = SLLIN_BUFF_BREAK + 1;
-@@ -950,21 +975,31 @@ static int sllin_send_break(struct sllin *sl)
- 
- 	/* Do the break ourselves; Inspired by
- 	   http://lxr.linux.no/#linux+v3.1.2/drivers/tty/tty_io.c#L2452 */
--	retval = tty->ops->break_ctl(tty, -1);
--	if (retval)
--		return retval;
-+	if (tty->ops->break_ctl) {
-+		retval = tty->ops->break_ctl(tty, -1);
-+		if (retval)
-+			return retval;
-+	} else {
-+		netdev_dbg(sl->dev, "%s() tty->ops->break_ctl is NULL.\n", __func__);
-+	}
- 
- 	/* udelay(712); */
- 	usleep_range_min = (1000000l * SLLIN_SAMPLES_PER_CHAR) / break_baud;
- 	usleep_range_max = usleep_range_min + 50;
- 	usleep_range(usleep_range_min, usleep_range_max);
- 
--	retval = tty->ops->break_ctl(tty, 0);
-+	if(tty->ops->break_ctl) {
-+		retval = tty->ops->break_ctl(tty, 0);
-+	} 
- 	usleep_range_min = (1000000l * 1 /* 1 bit */) / break_baud;
- 	usleep_range_max = usleep_range_min + 30;
- 	usleep_range(usleep_range_min, usleep_range_max);
- 
--	tty->ops->flush_buffer(tty);
-+	if ( tty->ops->flush_buffer) {
-+		tty->ops->flush_buffer(tty);
-+	} else {
-+		netdev_dbg(sl->dev, "%s() tty->ops->flush_buffer is NULL.\n", __func__);
-+	}
- 
- 	sl->tx_cnt = SLLIN_BUFF_SYNC;
- 
-@@ -1028,6 +1063,12 @@ static int sllin_kwthread(void *ptr)
- 		int lin_dlc;
- 		u8 lin_data_buff[SLLIN_DATA_MAX];
- 
-+		if (sl == NULL) {
-+			pr_err("sllin: sl is NULL\n");
-+		}
-+		if (sl->dev == NULL) {
-+			pr_err("sllin: sl->dev is NULL\n");
-+		}
- 
- 		if ((sl->lin_state == SLSTATE_IDLE) && sl->lin_master &&
- 			sl->id_to_send) {
-@@ -1036,6 +1077,7 @@ static int sllin_kwthread(void *ptr)
- 			}
- 		}
- 
-+		netdev_dbg(sl->dev, "sllin_kthread <WAIT_EVENT>\n");
- 		wait_event_killable(sl->kwt_wq, kthread_should_stop() ||
- 			test_bit(SLF_RXEVENT, &sl->flags) ||
- 			test_bit(SLF_TXEVENT, &sl->flags) ||
-@@ -1046,6 +1088,7 @@ static int sllin_kwthread(void *ptr)
- 				(sl->lin_state == SLSTATE_RESPONSE_WAIT))
- 				&& test_bit(SLF_MSGEVENT, &sl->flags)));
- 
-+		netdev_dbg(sl->dev, "sllin_kthread <WAKEUPED>\n");
- 		if (test_and_clear_bit(SLF_RXEVENT, &sl->flags)) {
- 			netdev_dbg(sl->dev, "sllin_kthread RXEVENT\n");
- 		}
-@@ -1078,21 +1121,25 @@ static int sllin_kwthread(void *ptr)
- 			sl->lin_state = SLSTATE_IDLE;
- 		}
- 
-+		netdev_dbg(sl->dev, "sllin_kthread: lin_state <%08x>\n",sl->lin_state);
- 		switch (sl->lin_state) {
- 		case SLSTATE_IDLE:
- 			if (!test_bit(SLF_MSGEVENT, &sl->flags))
- 				break;
--
-+			if (sl->tx_req_skb == NULL)
-+				netdev_dbg(sl->dev, "sl->tx_req_skb == NULL\n");
-+			if (sl->tx_req_skb->data == NULL)
-+				netdev_dbg(sl->dev, "sl->tx_req_skb->data == NULL\n");
- 			cf = (struct can_frame *)sl->tx_req_skb->data;
- 
- 			/* SFF RTR CAN frame -> LIN header */
- 			if (cf->can_id & CAN_RTR_FLAG) {
- 				struct sllin_conf_entry *sce;
- 
--				netdev_dbg(sl->dev, "%s: RTR SFF CAN frame, ID = %x\n",
--					__func__, cf->can_id & LIN_ID_MASK);
- 
- 				sce = &sl->linfr_cache[cf->can_id & LIN_ID_MASK];
-+				netdev_dbg(sl->dev, "%s: RTR SFF CAN frame, ID = %x dlc=%d\n",
-+					__func__, cf->can_id & LIN_ID_MASK, sce->dlc);
- 				spin_lock_irqsave(&sl->linfr_lock, flags);
- 
- 				/* Is there Slave response in linfr_cache to be sent? */
-@@ -1114,8 +1161,8 @@ static int sllin_kwthread(void *ptr)
- 				spin_unlock_irqrestore(&sl->linfr_lock, flags);
- 
- 			} else { /* SFF NON-RTR CAN frame -> LIN header + LIN response */
--				netdev_dbg(sl->dev, "%s: NON-RTR SFF CAN frame, ID = %x\n",
--					__func__, (int)cf->can_id & LIN_ID_MASK);
-+				netdev_dbg(sl->dev, "%s: NON-RTR SFF CAN frame, ID = %x\n dlc=%d",
-+					__func__, (int)cf->can_id & LIN_ID_MASK, cf->can_dlc);
- 
- 				lin_data = cf->data;
- 				lin_dlc = cf->can_dlc;
-@@ -1140,6 +1187,7 @@ static int sllin_kwthread(void *ptr)
- 			hrtimer_start(&sl->rx_timer,
- 				ktime_add(ktime_get(), sl->rx_timer_timeout),
- 				HRTIMER_MODE_ABS);
-+			netdev_dbg(sl->dev, "sllin_kthread: SLSTATE finish\n");
- 			break;
- 
- 		case SLSTATE_BREAK_SENT:
-@@ -1654,3 +1702,4 @@ static void __exit sllin_exit(void)
- 
- module_init(sllin_init);
- module_exit(sllin_exit);
-+