Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-15 08:31:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

Revert "can: m_can: remove support for custom bit timing"

Browse Source 
The timing limits specified by the Elkhart Lake CPU datasheets do not
match the defaults. Let's reintroduce the support for custom bit timings.

This reverts commit 0ddd83fbeb.

Link: https://lore.kernel.org/all/00c9e2596b1a548906921a574d4ef7a03c0dace0.1636967198.git.matthias.schiffer@ew.tq-group.com
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Matthias Schiffer 2021-11-15 10:18:50 +01:00 committed by Marc Kleine-Budde
parent 8c03b8bff7
commit ea768b2ffe
2 changed files with 21 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/net/can/m_can/m_can.c
View File

@ -1494,20 +1494,32 @@ static int m_can_dev_setup(struct m_can_classdev *cdev)
case 30:
/* CAN_CTRLMODE_FD_NON_ISO is fixed with M_CAN IP v3.0.x */
can_set_static_ctrlmode(dev, CAN_CTRLMODE_FD_NON_ISO);
cdev->can.bittiming_const = &m_can_bittiming_const_30X;
cdev->can.data_bittiming_const = &m_can_data_bittiming_const_30X;
cdev->can.bittiming_const = cdev->bit_timing ?
cdev->bit_timing : &m_can_bittiming_const_30X;
cdev->can.data_bittiming_const = cdev->data_timing ?
cdev->data_timing :
&m_can_data_bittiming_const_30X;
break;
case 31:
/* CAN_CTRLMODE_FD_NON_ISO is fixed with M_CAN IP v3.1.x */
can_set_static_ctrlmode(dev, CAN_CTRLMODE_FD_NON_ISO);
cdev->can.bittiming_const = &m_can_bittiming_const_31X;
cdev->can.data_bittiming_const = &m_can_data_bittiming_const_31X;
cdev->can.bittiming_const = cdev->bit_timing ?
cdev->bit_timing : &m_can_bittiming_const_31X;
cdev->can.data_bittiming_const = cdev->data_timing ?
cdev->data_timing :
&m_can_data_bittiming_const_31X;
break;
case 32:
case 33:
/* Support both MCAN version v3.2.x and v3.3.0 */
cdev->can.bittiming_const = &m_can_bittiming_const_31X;
cdev->can.data_bittiming_const = &m_can_data_bittiming_const_31X;
cdev->can.bittiming_const = cdev->bit_timing ?
cdev->bit_timing : &m_can_bittiming_const_31X;
cdev->can.data_bittiming_const = cdev->data_timing ?
cdev->data_timing :
&m_can_data_bittiming_const_31X;
cdev->can.ctrlmode_supported |=
(m_can_niso_supported(cdev) ?

3
drivers/net/can/m_can/m_can.h
View File

@ -85,6 +85,9 @@ struct m_can_classdev {
struct sk_buff *tx_skb;
struct phy *transceiver;
struct can_bittiming_const *bit_timing;
struct can_bittiming_const *data_timing;
struct m_can_ops *ops;
int version;