diff options
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 52 |
1 files changed, 22 insertions, 30 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 769d29ed106..7b0be0910f4 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -24,7 +24,6 @@ #include <linux/can/dev.h> #include <linux/can/error.h> #include <linux/can/led.h> -#include <linux/can/platform/flexcan.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/if_arp.h> @@ -37,7 +36,7 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/platform_device.h> -#include <linux/pinctrl/consumer.h> +#include <linux/regulator/consumer.h> #define DRV_NAME "flexcan" @@ -212,6 +211,7 @@ struct flexcan_priv { struct clk *clk_per; struct flexcan_platform_data *pdata; const struct flexcan_devtype_data *devtype_data; + struct regulator *reg_xceiver; }; static struct flexcan_devtype_data fsl_p1010_devtype_data = { @@ -259,15 +259,6 @@ static inline void flexcan_write(u32 val, void __iomem *addr) } #endif -/* - * Swtich transceiver on or off - */ -static void flexcan_transceiver_switch(const struct flexcan_priv *priv, int on) -{ - if (priv->pdata && priv->pdata->transceiver_switch) - priv->pdata->transceiver_switch(on); -} - static inline int flexcan_has_and_handle_berr(const struct flexcan_priv *priv, u32 reg_esr) { @@ -800,7 +791,11 @@ static int flexcan_chip_start(struct net_device *dev) if (priv->devtype_data->features & FLEXCAN_HAS_V10_FEATURES) flexcan_write(0x0, ®s->rxfgmask); - flexcan_transceiver_switch(priv, 1); + if (priv->reg_xceiver) { + err = regulator_enable(priv->reg_xceiver); + if (err) + goto out; + } /* synchronize with the can bus */ reg_mcr = flexcan_read(®s->mcr); @@ -843,7 +838,8 @@ static void flexcan_chip_stop(struct net_device *dev) reg |= FLEXCAN_MCR_MDIS | FLEXCAN_MCR_HALT; flexcan_write(reg, ®s->mcr); - flexcan_transceiver_switch(priv, 0); + if (priv->reg_xceiver) + regulator_disable(priv->reg_xceiver); priv->can.state = CAN_STATE_STOPPED; return; @@ -1004,16 +1000,11 @@ static int flexcan_probe(struct platform_device *pdev) struct flexcan_priv *priv; struct resource *mem; struct clk *clk_ipg = NULL, *clk_per = NULL; - struct pinctrl *pinctrl; void __iomem *base; resource_size_t mem_size; int err, irq; u32 clock_freq = 0; - pinctrl = devm_pinctrl_get_select_default(&pdev->dev); - if (IS_ERR(pinctrl)) - return PTR_ERR(pinctrl); - if (pdev->dev.of_node) of_property_read_u32(pdev->dev.of_node, "clock-frequency", &clock_freq); @@ -1090,6 +1081,10 @@ static int flexcan_probe(struct platform_device *pdev) priv->pdata = pdev->dev.platform_data; priv->devtype_data = devtype_data; + priv->reg_xceiver = devm_regulator_get(&pdev->dev, "xceiver"); + if (IS_ERR(priv->reg_xceiver)) + priv->reg_xceiver = NULL; + netif_napi_add(dev, &priv->napi, flexcan_poll, FLEXCAN_NAPI_WEIGHT); dev_set_drvdata(&pdev->dev, dev); @@ -1127,7 +1122,6 @@ static int flexcan_remove(struct platform_device *pdev) struct resource *mem; unregister_flexcandev(dev); - platform_set_drvdata(pdev, NULL); iounmap(priv->base); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1138,10 +1132,10 @@ static int flexcan_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int flexcan_suspend(struct platform_device *pdev, pm_message_t state) +#ifdef CONFIG_PM_SLEEP +static int flexcan_suspend(struct device *device) { - struct net_device *dev = platform_get_drvdata(pdev); + struct net_device *dev = dev_get_drvdata(device); struct flexcan_priv *priv = netdev_priv(dev); flexcan_chip_disable(priv); @@ -1155,9 +1149,9 @@ static int flexcan_suspend(struct platform_device *pdev, pm_message_t state) return 0; } -static int flexcan_resume(struct platform_device *pdev) +static int flexcan_resume(struct device *device) { - struct net_device *dev = platform_get_drvdata(pdev); + struct net_device *dev = dev_get_drvdata(device); struct flexcan_priv *priv = netdev_priv(dev); priv->can.state = CAN_STATE_ERROR_ACTIVE; @@ -1169,21 +1163,19 @@ static int flexcan_resume(struct platform_device *pdev) return 0; } -#else -#define flexcan_suspend NULL -#define flexcan_resume NULL -#endif +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(flexcan_pm_ops, flexcan_suspend, flexcan_resume); static struct platform_driver flexcan_driver = { .driver = { .name = DRV_NAME, .owner = THIS_MODULE, + .pm = &flexcan_pm_ops, .of_match_table = flexcan_of_match, }, .probe = flexcan_probe, .remove = flexcan_remove, - .suspend = flexcan_suspend, - .resume = flexcan_resume, .id_table = flexcan_id_table, }; |