From: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx> 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 0ddd83fbebbc5537f9d180d31f659db3564be708. Link: https://lore.kernel.org/all/00c9e2596b1a548906921a574d4ef7a03c0dace0.1636967198.git.matthias.schiffer@xxxxxxxxxxxxxxx Signed-off-by: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> --- drivers/net/can/m_can/m_can.c | 24 ++++++++++++++++++------ drivers/net/can/m_can/m_can.h | 3 +++ 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index e330b4c121bf..c2a8421e7845 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -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) ? diff --git a/drivers/net/can/m_can/m_can.h b/drivers/net/can/m_can/m_can.h index d18b515e6ccc..ad063b101411 100644 --- a/drivers/net/can/m_can/m_can.h +++ b/drivers/net/can/m_can/m_can.h @@ -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; -- 2.33.0
