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linux-can-fixes-for-4.8-20160921 

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Merge tag 'linux-can-fixes-for-4.8-20160921' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-09-21

this is another pull request of one patch for the upcoming linux-4.8 release.

Marek Vasut fixes the CAN-FD bit rate switch in the ifi driver by configuring
the transmitter delay.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-09-22 02:47:46 -04:00
parent 75c9510b8f 8d58790b83
commit 290b774a1e
1 changed files with 10 additions and 1 deletions
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11
drivers/net/can/ifi_canfd/ifi_canfd.c
View File

@ -81,6 +81,10 @@
#define IFI_CANFD_TIME_SET_TIMEA_4_12_6_6 BIT(15)
#define IFI_CANFD_TDELAY 0x1c
#define IFI_CANFD_TDELAY_DEFAULT 0xb
#define IFI_CANFD_TDELAY_MASK 0x3fff
#define IFI_CANFD_TDELAY_ABS BIT(14)
#define IFI_CANFD_TDELAY_EN BIT(15)
#define IFI_CANFD_ERROR 0x20
#define IFI_CANFD_ERROR_TX_OFFSET 0
@ -641,7 +645,7 @@ static void ifi_canfd_set_bittiming(struct net_device *ndev)
struct ifi_canfd_priv *priv = netdev_priv(ndev);
const struct can_bittiming *bt = &priv->can.bittiming;
const struct can_bittiming *dbt = &priv->can.data_bittiming;
u16 brp, sjw, tseg1, tseg2;
u16 brp, sjw, tseg1, tseg2, tdc;
/* Configure bit timing */
brp = bt->brp - 2;
@ -664,6 +668,11 @@ static void ifi_canfd_set_bittiming(struct net_device *ndev)
(brp << IFI_CANFD_TIME_PRESCALE_OFF) |
(sjw << IFI_CANFD_TIME_SJW_OFF_7_9_8_8),
priv->base + IFI_CANFD_FTIME);
/* Configure transmitter delay */
tdc = (dbt->brp * (dbt->phase_seg1 + 1)) & IFI_CANFD_TDELAY_MASK;
writel(IFI_CANFD_TDELAY_EN | IFI_CANFD_TDELAY_ABS | tdc,
priv->base + IFI_CANFD_TDELAY);
}
static void ifi_canfd_set_filter(struct net_device *ndev, const u32 id,