diff options
Diffstat (limited to 'drivers/net/can/pch_can.c')
| -rw-r--r-- | drivers/net/can/pch_can.c | 63 |
1 files changed, 21 insertions, 42 deletions
diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c index af4fbd8f9077..5c180d2f3c3c 100644 --- a/drivers/net/can/pch_can.c +++ b/drivers/net/can/pch_can.c @@ -957,8 +957,7 @@ static void pch_can_remove(struct pci_dev *pdev) free_candev(priv->ndev); } -#ifdef CONFIG_PM -static void pch_can_set_int_custom(struct pch_can_priv *priv) +static void __maybe_unused pch_can_set_int_custom(struct pch_can_priv *priv) { /* Clearing the IE, SIE and EIE bits of Can control register. */ pch_can_bit_clear(&priv->regs->cont, PCH_CTRL_IE_SIE_EIE); @@ -969,14 +968,14 @@ static void pch_can_set_int_custom(struct pch_can_priv *priv) } /* This function retrieves interrupt enabled for the CAN device. */ -static u32 pch_can_get_int_enables(struct pch_can_priv *priv) +static u32 __maybe_unused pch_can_get_int_enables(struct pch_can_priv *priv) { /* Obtaining the status of IE, SIE and EIE interrupt bits. */ return (ioread32(&priv->regs->cont) & PCH_CTRL_IE_SIE_EIE) >> 1; } -static u32 pch_can_get_rxtx_ir(struct pch_can_priv *priv, u32 buff_num, - enum pch_ifreg dir) +static u32 __maybe_unused pch_can_get_rxtx_ir(struct pch_can_priv *priv, + u32 buff_num, enum pch_ifreg dir) { u32 ie, enable; @@ -997,8 +996,8 @@ static u32 pch_can_get_rxtx_ir(struct pch_can_priv *priv, u32 buff_num, return enable; } -static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv, - u32 buffer_num, int set) +static void __maybe_unused pch_can_set_rx_buffer_link(struct pch_can_priv *priv, + u32 buffer_num, int set) { iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[0].cmask); pch_can_rw_msg_obj(&priv->regs->ifregs[0].creq, buffer_num); @@ -1013,7 +1012,8 @@ static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv, pch_can_rw_msg_obj(&priv->regs->ifregs[0].creq, buffer_num); } -static u32 pch_can_get_rx_buffer_link(struct pch_can_priv *priv, u32 buffer_num) +static u32 __maybe_unused pch_can_get_rx_buffer_link(struct pch_can_priv *priv, + u32 buffer_num) { u32 link; @@ -1027,20 +1027,19 @@ static u32 pch_can_get_rx_buffer_link(struct pch_can_priv *priv, u32 buffer_num) return link; } -static int pch_can_get_buffer_status(struct pch_can_priv *priv) +static int __maybe_unused pch_can_get_buffer_status(struct pch_can_priv *priv) { return (ioread32(&priv->regs->treq1) & 0xffff) | (ioread32(&priv->regs->treq2) << 16); } -static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state) +static int __maybe_unused pch_can_suspend(struct device *dev_d) { int i; - int retval; u32 buf_stat; /* Variable for reading the transmit buffer status. */ int counter = PCH_COUNTER_LIMIT; - struct net_device *dev = pci_get_drvdata(pdev); + struct net_device *dev = dev_get_drvdata(dev_d); struct pch_can_priv *priv = netdev_priv(dev); /* Stop the CAN controller */ @@ -1058,7 +1057,7 @@ static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state) udelay(1); } if (!counter) - dev_err(&pdev->dev, "%s -> Transmission time out.\n", __func__); + dev_err(dev_d, "%s -> Transmission time out.\n", __func__); /* Save interrupt configuration and then disable them */ priv->int_enables = pch_can_get_int_enables(priv); @@ -1081,35 +1080,16 @@ static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state) /* Disable all Receive buffers */ pch_can_set_rx_all(priv, 0); - retval = pci_save_state(pdev); - if (retval) { - dev_err(&pdev->dev, "pci_save_state failed.\n"); - } else { - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - } - return retval; + return 0; } -static int pch_can_resume(struct pci_dev *pdev) +static int __maybe_unused pch_can_resume(struct device *dev_d) { int i; - int retval; - struct net_device *dev = pci_get_drvdata(pdev); + struct net_device *dev = dev_get_drvdata(dev_d); struct pch_can_priv *priv = netdev_priv(dev); - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - retval = pci_enable_device(pdev); - if (retval) { - dev_err(&pdev->dev, "pci_enable_device failed.\n"); - return retval; - } - - pci_enable_wake(pdev, PCI_D3hot, 0); - priv->can.state = CAN_STATE_ERROR_ACTIVE; /* Disabling all interrupts. */ @@ -1146,12 +1126,8 @@ static int pch_can_resume(struct pci_dev *pdev) /* Restore Run Mode */ pch_can_set_run_mode(priv, PCH_CAN_RUN); - return retval; + return 0; } -#else -#define pch_can_suspend NULL -#define pch_can_resume NULL -#endif static int pch_can_get_berr_counter(const struct net_device *dev, struct can_berr_counter *bec) @@ -1252,13 +1228,16 @@ probe_exit_endev: return rc; } +static SIMPLE_DEV_PM_OPS(pch_can_pm_ops, + pch_can_suspend, + pch_can_resume); + static struct pci_driver pch_can_pci_driver = { .name = "pch_can", .id_table = pch_pci_tbl, .probe = pch_can_probe, .remove = pch_can_remove, - .suspend = pch_can_suspend, - .resume = pch_can_resume, + .driver.pm = &pch_can_pm_ops, }; module_pci_driver(pch_can_pci_driver); |