diff options
Diffstat (limited to 'drivers/net/can/kvaser_pciefd.c')
| -rw-r--r-- | drivers/net/can/kvaser_pciefd.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c index f9815fda8840..6f766918211a 100644 --- a/drivers/net/can/kvaser_pciefd.c +++ b/drivers/net/can/kvaser_pciefd.c @@ -65,6 +65,7 @@ MODULE_DESCRIPTION("CAN driver for Kvaser CAN/PCIe devices"); #define KVASER_PCIEFD_SYSID_BASE 0x1f020 #define KVASER_PCIEFD_SYSID_VERSION_REG (KVASER_PCIEFD_SYSID_BASE + 0x8) #define KVASER_PCIEFD_SYSID_CANFREQ_REG (KVASER_PCIEFD_SYSID_BASE + 0xc) +#define KVASER_PCIEFD_SYSID_BUSFREQ_REG (KVASER_PCIEFD_SYSID_BASE + 0x10) #define KVASER_PCIEFD_SYSID_BUILD_REG (KVASER_PCIEFD_SYSID_BASE + 0x14) /* Shared receive buffer registers */ #define KVASER_PCIEFD_SRB_BASE 0x1f200 @@ -268,6 +269,7 @@ struct kvaser_pciefd { struct kvaser_pciefd_can *can[KVASER_PCIEFD_MAX_CAN_CHANNELS]; void *dma_data[KVASER_PCIEFD_DMA_COUNT]; u8 nr_channels; + u32 bus_freq; u32 freq; u32 freq_to_ticks_div; }; @@ -666,7 +668,7 @@ static void kvaser_pciefd_pwm_start(struct kvaser_pciefd_can *can) spin_lock_irqsave(&can->lock, irq); /* Set frequency to 500 KHz*/ - top = can->can.clock.freq / (2 * 500000) - 1; + top = can->kv_pcie->bus_freq / (2 * 500000) - 1; pwm_ctrl = top & 0xff; pwm_ctrl |= (top & 0xff) << KVASER_PCIEFD_KCAN_PWM_TOP_SHIFT; @@ -1119,6 +1121,8 @@ static int kvaser_pciefd_setup_board(struct kvaser_pciefd *pcie) return -ENODEV; } + pcie->bus_freq = ioread32(pcie->reg_base + + KVASER_PCIEFD_SYSID_BUSFREQ_REG); pcie->freq = ioread32(pcie->reg_base + KVASER_PCIEFD_SYSID_CANFREQ_REG); pcie->freq_to_ticks_div = pcie->freq / 1000000; if (pcie->freq_to_ticks_div == 0) |