diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/can/xilinx_can.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c index 797c69a0314d..4d3283db3a13 100644 --- a/drivers/net/can/xilinx_can.c +++ b/drivers/net/can/xilinx_can.c @@ -28,6 +28,7 @@ #include <linux/types.h> #include <linux/can/dev.h> #include <linux/can/error.h> +#include <linux/phy/phy.h> #include <linux/pm_runtime.h> #define DRIVER_NAME "xilinx_can" @@ -198,6 +199,7 @@ struct xcan_devtype_data { * @bus_clk: Pointer to struct clk * @can_clk: Pointer to struct clk * @devtype: Device type specific constants + * @transceiver: Optional pointer to associated CAN transceiver */ struct xcan_priv { struct can_priv can; @@ -215,6 +217,7 @@ struct xcan_priv { struct clk *bus_clk; struct clk *can_clk; struct xcan_devtype_data devtype; + struct phy *transceiver; }; /* CAN Bittiming constants as per Xilinx CAN specs */ @@ -1419,6 +1422,10 @@ static int xcan_open(struct net_device *ndev) struct xcan_priv *priv = netdev_priv(ndev); int ret; + ret = phy_power_on(priv->transceiver); + if (ret) + return ret; + ret = pm_runtime_get_sync(priv->dev); if (ret < 0) { netdev_err(ndev, "%s: pm_runtime_get failed(%d)\n", @@ -1462,6 +1469,7 @@ err_irq: free_irq(ndev->irq, ndev); err: pm_runtime_put(priv->dev); + phy_power_off(priv->transceiver); return ret; } @@ -1483,6 +1491,7 @@ static int xcan_close(struct net_device *ndev) close_candev(ndev); pm_runtime_put(priv->dev); + phy_power_off(priv->transceiver); return 0; } @@ -1713,6 +1722,7 @@ static int xcan_probe(struct platform_device *pdev) { struct net_device *ndev; struct xcan_priv *priv; + struct phy *transceiver; const struct of_device_id *of_id; const struct xcan_devtype_data *devtype = &xcan_axi_data; void __iomem *addr; @@ -1843,6 +1853,14 @@ static int xcan_probe(struct platform_device *pdev) goto err_free; } + transceiver = devm_phy_optional_get(&pdev->dev, NULL); + if (IS_ERR(transceiver)) { + ret = PTR_ERR(transceiver); + dev_err_probe(&pdev->dev, ret, "failed to get phy\n"); + goto err_free; + } + priv->transceiver = transceiver; + priv->write_reg = xcan_write_reg_le; priv->read_reg = xcan_read_reg_le; @@ -1869,6 +1887,7 @@ static int xcan_probe(struct platform_device *pdev) goto err_disableclks; } + of_can_transceiver(ndev); pm_runtime_put(&pdev->dev); if (priv->devtype.flags & XCAN_FLAG_CANFD_2) { |