| Message ID | 1443593755-20991-5-git-send-email-horms+renesas@verge.net.au (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
Hello. On 9/30/2015 9:15 AM, Simon Horman wrote: > From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> > > This patch supports the r8a7795 SoC by: > - Using two interrupts > + One for E-MAC > + One for everything else > + Both can be handled by the existing common interrupt handler, which > affords a simpler update to support the new SoC. In future some > consideration may be given to implementing multiple interrupt handlers > - Limiting the phy speed to 100Mbit/s for the new SoC; > at this time it is not clear how this restriction may be lifted > but I hope it will be possible as more information comes to light > > Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> > [horms: reworked] > Signed-off-by: Simon Horman <horms+renesas@verge.net.au> > > --- > v0 [Kazuya Mizuguchi] > > v1 [Simon Horman] > * Updated patch subject > > v2 [Simon Horman] > * Reworked based on extensive feedback from > Geert Uytterhoeven and Sergei Shtylyov. > * Broke binding update out into separate patch > > v3 [Simon Horman] > * Check new return value of phy_set_max_speed() > > v4 > * No change > --- > drivers/net/ethernet/renesas/ravb.h | 7 ++++ > drivers/net/ethernet/renesas/ravb_main.c | 63 ++++++++++++++++++++++++++++---- > 2 files changed, 62 insertions(+), 8 deletions(-) > > diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h > index a157aaaaff6a..0623fff932e4 100644 > --- a/drivers/net/ethernet/renesas/ravb.h > +++ b/drivers/net/ethernet/renesas/ravb.h > @@ -766,6 +766,11 @@ struct ravb_ptp { > struct ravb_ptp_perout perout[N_PER_OUT]; > }; > > +enum ravb_chip_id { > + RCAR_GEN2, > + RCAR_GEN3, > +}; > + > struct ravb_private { > struct net_device *ndev; > struct platform_device *pdev; > @@ -806,6 +811,8 @@ struct ravb_private { > int msg_enable; > int speed; > int duplex; > + int emac_irq; > + enum ravb_chip_id chip_id; > > unsigned no_avb_link:1; > unsigned avb_link_active_low:1; > diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c > index 4ca093d033f8..8cc5ec5ed19a 100644 > --- a/drivers/net/ethernet/renesas/ravb_main.c > +++ b/drivers/net/ethernet/renesas/ravb_main.c [...] > @@ -1197,6 +1213,15 @@ static int ravb_open(struct net_device *ndev) > goto out_napi_off; > } > > + if (priv->chip_id == RCAR_GEN3) { > + error = request_irq(priv->emac_irq, ravb_interrupt, > + IRQF_SHARED, ndev->name, ndev); > + if (error) { > + netdev_err(ndev, "cannot request IRQ\n"); > + goto out_free_irq; > + } > + } > + > /* Device init */ > error = ravb_dmac_init(ndev); > if (error) > @@ -1220,6 +1245,7 @@ out_ptp_stop: > ravb_ptp_stop(ndev); > out_free_irq: > free_irq(ndev->irq, ndev); > + free_irq(priv->emac_irq, ndev); Grr, this sloppy code causes WARNING in __free_irq() on gen2 SoCs. I'll deal with it... > out_napi_off: > napi_disable(&priv->napi[RAVB_NC]); > napi_disable(&priv->napi[RAVB_BE]); [...] MBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index a157aaaaff6a..0623fff932e4 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -766,6 +766,11 @@ struct ravb_ptp { struct ravb_ptp_perout perout[N_PER_OUT]; }; +enum ravb_chip_id { + RCAR_GEN2, + RCAR_GEN3, +}; + struct ravb_private { struct net_device *ndev; struct platform_device *pdev; @@ -806,6 +811,8 @@ struct ravb_private { int msg_enable; int speed; int duplex; + int emac_irq; + enum ravb_chip_id chip_id; unsigned no_avb_link:1; unsigned avb_link_active_low:1; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 4ca093d033f8..8cc5ec5ed19a 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -889,6 +889,22 @@ static int ravb_phy_init(struct net_device *ndev) return -ENOENT; } + /* This driver only support 10/100Mbit speeds on Gen3 + * at this time. + */ + if (priv->chip_id == RCAR_GEN3) { + int err; + + err = phy_set_max_speed(phydev, SPEED_100); + if (err) { + netdev_err(ndev, "failed to limit PHY to 100Mbit/s\n"); + phy_disconnect(phydev); + return err; + } + + netdev_info(ndev, "limited PHY to 100Mbit/s\n"); + } + netdev_info(ndev, "attached PHY %d (IRQ %d) to driver %s\n", phydev->addr, phydev->irq, phydev->drv->name); @@ -1197,6 +1213,15 @@ static int ravb_open(struct net_device *ndev) goto out_napi_off; } + if (priv->chip_id == RCAR_GEN3) { + error = request_irq(priv->emac_irq, ravb_interrupt, + IRQF_SHARED, ndev->name, ndev); + if (error) { + netdev_err(ndev, "cannot request IRQ\n"); + goto out_free_irq; + } + } + /* Device init */ error = ravb_dmac_init(ndev); if (error) @@ -1220,6 +1245,7 @@ out_ptp_stop: ravb_ptp_stop(ndev); out_free_irq: free_irq(ndev->irq, ndev); + free_irq(priv->emac_irq, ndev); out_napi_off: napi_disable(&priv->napi[RAVB_NC]); napi_disable(&priv->napi[RAVB_BE]); @@ -1625,10 +1651,20 @@ static int ravb_mdio_release(struct ravb_private *priv) return 0; } +static const struct of_device_id ravb_match_table[] = { + { .compatible = "renesas,etheravb-r8a7790", .data = (void *)RCAR_GEN2 }, + { .compatible = "renesas,etheravb-r8a7794", .data = (void *)RCAR_GEN2 }, + { .compatible = "renesas,etheravb-r8a7795", .data = (void *)RCAR_GEN3 }, + { } +}; +MODULE_DEVICE_TABLE(of, ravb_match_table); + static int ravb_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; + const struct of_device_id *match; struct ravb_private *priv; + enum ravb_chip_id chip_id; struct net_device *ndev; int error, irq, q; struct resource *res; @@ -1657,7 +1693,14 @@ static int ravb_probe(struct platform_device *pdev) /* The Ether-specific entries in the device structure. */ ndev->base_addr = res->start; ndev->dma = -1; - irq = platform_get_irq(pdev, 0); + + match = of_match_device(of_match_ptr(ravb_match_table), &pdev->dev); + chip_id = (enum ravb_chip_id)match->data; + + if (chip_id == RCAR_GEN3) + irq = platform_get_irq_byname(pdev, "ch22"); + else + irq = platform_get_irq(pdev, 0); if (irq < 0) { error = irq; goto out_release; @@ -1688,6 +1731,17 @@ static int ravb_probe(struct platform_device *pdev) priv->avb_link_active_low = of_property_read_bool(np, "renesas,ether-link-active-low"); + if (chip_id == RCAR_GEN3) { + irq = platform_get_irq_byname(pdev, "ch24"); + if (irq < 0) { + error = irq; + goto out_release; + } + priv->emac_irq = irq; + } + + priv->chip_id = chip_id; + /* Set function */ ndev->netdev_ops = &ravb_netdev_ops; ndev->ethtool_ops = &ravb_ethtool_ops; @@ -1818,13 +1872,6 @@ static const struct dev_pm_ops ravb_dev_pm_ops = { #define RAVB_PM_OPS NULL #endif -static const struct of_device_id ravb_match_table[] = { - { .compatible = "renesas,etheravb-r8a7790" }, - { .compatible = "renesas,etheravb-r8a7794" }, - { } -}; -MODULE_DEVICE_TABLE(of, ravb_match_table); - static struct platform_driver ravb_driver = { .probe = ravb_probe, .remove = ravb_remove,