diff options
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 169 | ||||
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.h | 2 |
2 files changed, 104 insertions, 67 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index e27bc6964402..205f4b86d9da 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -2184,51 +2184,67 @@ static void macb_probe_queues(void __iomem *mem, (*num_queues)++; } -static int macb_init(struct platform_device *pdev) +static int macb_clk_init(struct platform_device *pdev, struct clk **pclk, + struct clk **hclk, struct clk **tx_clk) { - struct net_device *dev = platform_get_drvdata(pdev); - unsigned int hw_q, q; - struct macb *bp = netdev_priv(dev); - struct macb_queue *queue; int err; - u32 val; - bp->pclk = devm_clk_get(&pdev->dev, "pclk"); - if (IS_ERR(bp->pclk)) { - err = PTR_ERR(bp->pclk); + *pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(*pclk)) { + err = PTR_ERR(*pclk); dev_err(&pdev->dev, "failed to get macb_clk (%u)\n", err); return err; } - bp->hclk = devm_clk_get(&pdev->dev, "hclk"); - if (IS_ERR(bp->hclk)) { - err = PTR_ERR(bp->hclk); + *hclk = devm_clk_get(&pdev->dev, "hclk"); + if (IS_ERR(*hclk)) { + err = PTR_ERR(*hclk); dev_err(&pdev->dev, "failed to get hclk (%u)\n", err); return err; } - bp->tx_clk = devm_clk_get(&pdev->dev, "tx_clk"); - if (IS_ERR(bp->tx_clk)) - bp->tx_clk = NULL; + *tx_clk = devm_clk_get(&pdev->dev, "tx_clk"); + if (IS_ERR(*tx_clk)) + *tx_clk = NULL; - err = clk_prepare_enable(bp->pclk); + err = clk_prepare_enable(*pclk); if (err) { dev_err(&pdev->dev, "failed to enable pclk (%u)\n", err); return err; } - err = clk_prepare_enable(bp->hclk); + err = clk_prepare_enable(*hclk); if (err) { dev_err(&pdev->dev, "failed to enable hclk (%u)\n", err); goto err_disable_pclk; } - err = clk_prepare_enable(bp->tx_clk); + err = clk_prepare_enable(*tx_clk); if (err) { dev_err(&pdev->dev, "failed to enable tx_clk (%u)\n", err); goto err_disable_hclk; } + return 0; + +err_disable_hclk: + clk_disable_unprepare(*hclk); + +err_disable_pclk: + clk_disable_unprepare(*pclk); + + return err; +} + +static int macb_init(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + unsigned int hw_q, q; + struct macb *bp = netdev_priv(dev); + struct macb_queue *queue; + int err; + u32 val; + /* set the queue register mapping once for all: queue0 has a special * register mapping but we don't want to test the queue index then * compute the corresponding register offset at run time. @@ -2266,7 +2282,7 @@ static int macb_init(struct platform_device *pdev) dev_err(&pdev->dev, "Unable to request IRQ %d (error %d)\n", queue->irq, err); - goto err_disable_tx_clk; + return err; } INIT_WORK(&queue->tx_error_task, macb_tx_error_task); @@ -2322,17 +2338,6 @@ static int macb_init(struct platform_device *pdev) macb_writel(bp, NCFGR, val); return 0; - -err_disable_tx_clk: - clk_disable_unprepare(bp->tx_clk); - -err_disable_hclk: - clk_disable_unprepare(bp->hclk); - -err_disable_pclk: - clk_disable_unprepare(bp->pclk); - - return err; } #if defined(CONFIG_OF) @@ -2600,30 +2605,41 @@ static const struct net_device_ops at91ether_netdev_ops = { #endif }; -static int at91ether_init(struct platform_device *pdev) +static int at91ether_clk_init(struct platform_device *pdev, struct clk **pclk, + struct clk **hclk, struct clk **tx_clk) { - struct net_device *dev = platform_get_drvdata(pdev); - struct macb *bp = netdev_priv(dev); int err; - u32 reg; - bp->pclk = devm_clk_get(&pdev->dev, "ether_clk"); - if (IS_ERR(bp->pclk)) - return PTR_ERR(bp->pclk); + *hclk = NULL; + *tx_clk = NULL; + + *pclk = devm_clk_get(&pdev->dev, "ether_clk"); + if (IS_ERR(*pclk)) + return PTR_ERR(*pclk); - err = clk_prepare_enable(bp->pclk); + err = clk_prepare_enable(*pclk); if (err) { dev_err(&pdev->dev, "failed to enable pclk (%u)\n", err); return err; } + return 0; +} + +static int at91ether_init(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct macb *bp = netdev_priv(dev); + int err; + u32 reg; + dev->netdev_ops = &at91ether_netdev_ops; dev->ethtool_ops = &macb_ethtool_ops; err = devm_request_irq(&pdev->dev, dev->irq, at91ether_interrupt, 0, dev->name, dev); if (err) - goto err_disable_clk; + return err; macb_writel(bp, NCR, 0); @@ -2634,37 +2650,37 @@ static int at91ether_init(struct platform_device *pdev) macb_writel(bp, NCFGR, reg); return 0; - -err_disable_clk: - clk_disable_unprepare(bp->pclk); - - return err; } static const struct macb_config at91sam9260_config = { .caps = MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_USRIO_DEFAULT_IS_MII, + .clk_init = macb_clk_init, .init = macb_init, }; static const struct macb_config pc302gem_config = { .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE, .dma_burst_length = 16, + .clk_init = macb_clk_init, .init = macb_init, }; static const struct macb_config sama5d3_config = { .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE, .dma_burst_length = 16, + .clk_init = macb_clk_init, .init = macb_init, }; static const struct macb_config sama5d4_config = { .caps = 0, .dma_burst_length = 4, + .clk_init = macb_clk_init, .init = macb_init, }; static const struct macb_config emac_config = { + .clk_init = at91ether_clk_init, .init = at91ether_init, }; @@ -2685,9 +2701,13 @@ MODULE_DEVICE_TABLE(of, macb_dt_ids); static int macb_probe(struct platform_device *pdev) { + int (*clk_init)(struct platform_device *, struct clk **, + struct clk **, struct clk **) + = macb_clk_init; int (*init)(struct platform_device *) = macb_init; struct device_node *np = pdev->dev.of_node; const struct macb_config *macb_config = NULL; + struct clk *pclk, *hclk, *tx_clk; unsigned int queue_mask, num_queues; struct macb_platform_data *pdata; struct phy_device *phydev; @@ -2698,15 +2718,34 @@ static int macb_probe(struct platform_device *pdev) struct macb *bp; int err; + if (np) { + const struct of_device_id *match; + + match = of_match_node(macb_dt_ids, np); + if (match && match->data) { + macb_config = match->data; + clk_init = macb_config->clk_init; + init = macb_config->init; + } + } + + err = clk_init(pdev, &pclk, &hclk, &tx_clk); + if (err) + return err; + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); mem = devm_ioremap_resource(&pdev->dev, regs); - if (IS_ERR(mem)) - return PTR_ERR(mem); + if (IS_ERR(mem)) { + err = PTR_ERR(mem); + goto err_disable_clocks; + } macb_probe_queues(mem, &queue_mask, &num_queues); dev = alloc_etherdev_mq(sizeof(*bp), num_queues); - if (!dev) - return -ENOMEM; + if (!dev) { + err = -ENOMEM; + goto err_disable_clocks; + } dev->base_addr = regs->start; @@ -2718,27 +2757,23 @@ static int macb_probe(struct platform_device *pdev) bp->regs = mem; bp->num_queues = num_queues; bp->queue_mask = queue_mask; + if (macb_config) + bp->dma_burst_length = macb_config->dma_burst_length; + bp->pclk = pclk; + bp->hclk = hclk; + bp->tx_clk = tx_clk; spin_lock_init(&bp->lock); - if (np) { - const struct of_device_id *match; - - match = of_match_node(macb_dt_ids, np); - if (match && match->data) { - macb_config = match->data; - bp->dma_burst_length = macb_config->dma_burst_length; - init = macb_config->init; - } - } - /* setup capabilities */ macb_configure_caps(bp, macb_config); platform_set_drvdata(pdev, dev); dev->irq = platform_get_irq(pdev, 0); - if (dev->irq < 0) - return dev->irq; + if (dev->irq < 0) { + err = dev->irq; + goto err_disable_clocks; + } mac = of_get_mac_address(np); if (mac) @@ -2765,7 +2800,7 @@ static int macb_probe(struct platform_device *pdev) err = register_netdev(dev); if (err) { dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); - goto err_disable_clocks; + goto err_out_unregister_netdev; } err = macb_mii_init(bp); @@ -2787,14 +2822,14 @@ static int macb_probe(struct platform_device *pdev) err_out_unregister_netdev: unregister_netdev(dev); -err_disable_clocks: - clk_disable_unprepare(bp->tx_clk); - clk_disable_unprepare(bp->hclk); - clk_disable_unprepare(bp->pclk); - err_out_free_netdev: free_netdev(dev); +err_disable_clocks: + clk_disable_unprepare(tx_clk); + clk_disable_unprepare(hclk); + clk_disable_unprepare(pclk); + return err; } diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h index 0b6afac91bfe..5f9950e84c5e 100644 --- a/drivers/net/ethernet/cadence/macb.h +++ b/drivers/net/ethernet/cadence/macb.h @@ -754,6 +754,8 @@ struct macb_or_gem_ops { struct macb_config { u32 caps; unsigned int dma_burst_length; + int (*clk_init)(struct platform_device *pdev, struct clk **pclk, + struct clk **hclk, struct clk **tx_clk); int (*init)(struct platform_device *pdev); }; |