diff options
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index c8a6fc72606d..c5f143165f80 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -190,7 +190,8 @@ struct flexcan_priv { u32 reg_esr; u32 reg_ctrl_default; - struct clk *clk; + struct clk *clk_ipg; + struct clk *clk_per; struct flexcan_platform_data *pdata; const struct flexcan_devtype_data *devtype_data; }; @@ -828,7 +829,8 @@ static int flexcan_open(struct net_device *dev) struct flexcan_priv *priv = netdev_priv(dev); int err; - clk_prepare_enable(priv->clk); + clk_prepare_enable(priv->clk_ipg); + clk_prepare_enable(priv->clk_per); err = open_candev(dev); if (err) @@ -850,7 +852,8 @@ static int flexcan_open(struct net_device *dev) out_close: close_candev(dev); out: - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(priv->clk_per); + clk_disable_unprepare(priv->clk_ipg); return err; } @@ -864,7 +867,8 @@ static int flexcan_close(struct net_device *dev) flexcan_chip_stop(dev); free_irq(dev->irq, dev); - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(priv->clk_per); + clk_disable_unprepare(priv->clk_ipg); close_candev(dev); @@ -903,7 +907,8 @@ static int __devinit register_flexcandev(struct net_device *dev) struct flexcan_regs __iomem *regs = priv->base; u32 reg, err; - clk_prepare_enable(priv->clk); + clk_prepare_enable(priv->clk_ipg); + clk_prepare_enable(priv->clk_per); /* select "bus clock", chip must be disabled */ flexcan_chip_disable(priv); @@ -936,7 +941,8 @@ static int __devinit register_flexcandev(struct net_device *dev) out: /* disable core and turn off clocks */ flexcan_chip_disable(priv); - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(priv->clk_per); + clk_disable_unprepare(priv->clk_ipg); return err; } @@ -964,7 +970,7 @@ static int __devinit flexcan_probe(struct platform_device *pdev) struct net_device *dev; struct flexcan_priv *priv; struct resource *mem; - struct clk *clk = NULL; + struct clk *clk_ipg = NULL, *clk_per = NULL; struct pinctrl *pinctrl; void __iomem *base; resource_size_t mem_size; @@ -980,13 +986,20 @@ static int __devinit flexcan_probe(struct platform_device *pdev) "clock-frequency", &clock_freq); if (!clock_freq) { - clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) { - dev_err(&pdev->dev, "no clock defined\n"); - err = PTR_ERR(clk); + clk_ipg = devm_clk_get(&pdev->dev, "ipg"); + if (IS_ERR(clk_ipg)) { + dev_err(&pdev->dev, "no ipg clock defined\n"); + err = PTR_ERR(clk_ipg); + goto failed_clock; + } + clock_freq = clk_get_rate(clk_ipg); + + clk_per = devm_clk_get(&pdev->dev, "per"); + if (IS_ERR(clk_per)) { + dev_err(&pdev->dev, "no per clock defined\n"); + err = PTR_ERR(clk_per); goto failed_clock; } - clock_freq = clk_get_rate(clk); } mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1039,7 +1052,8 @@ static int __devinit flexcan_probe(struct platform_device *pdev) CAN_CTRLMODE_BERR_REPORTING; priv->base = base; priv->dev = dev; - priv->clk = clk; + priv->clk_ipg = clk_ipg; + priv->clk_per = clk_per; priv->pdata = pdev->dev.platform_data; priv->devtype_data = devtype_data; @@ -1067,8 +1081,6 @@ static int __devinit flexcan_probe(struct platform_device *pdev) failed_map: release_mem_region(mem->start, mem_size); failed_get: - if (clk) - clk_put(clk); failed_clock: return err; } @@ -1086,9 +1098,6 @@ static int __devexit flexcan_remove(struct platform_device *pdev) mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(mem->start, resource_size(mem)); - if (priv->clk) - clk_put(priv->clk); - free_candev(dev); return 0; |