diff options
Diffstat (limited to 'kernel/drivers/net/phy/fixed_phy.c')
| -rw-r--r-- | kernel/drivers/net/phy/fixed_phy.c | 121 |
1 files changed, 93 insertions, 28 deletions
diff --git a/kernel/drivers/net/phy/fixed_phy.c b/kernel/drivers/net/phy/fixed_phy.c index 479b93f95..e23bf5b90 100644 --- a/kernel/drivers/net/phy/fixed_phy.c +++ b/kernel/drivers/net/phy/fixed_phy.c @@ -22,6 +22,7 @@ #include <linux/err.h> #include <linux/slab.h> #include <linux/of.h> +#include <linux/gpio.h> #define MII_REGS_NUM 29 @@ -38,6 +39,7 @@ struct fixed_phy { struct fixed_phy_status status; int (*link_update)(struct net_device *, struct fixed_phy_status *); struct list_head node; + int link_gpio; }; static struct platform_device *pdev; @@ -52,61 +54,87 @@ static int fixed_phy_update_regs(struct fixed_phy *fp) u16 lpagb = 0; u16 lpa = 0; - if (!fp->status.link) - goto done; - bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE; + if (gpio_is_valid(fp->link_gpio)) + fp->status.link = !!gpio_get_value_cansleep(fp->link_gpio); if (fp->status.duplex) { - bmcr |= BMCR_FULLDPLX; - switch (fp->status.speed) { case 1000: bmsr |= BMSR_ESTATEN; - bmcr |= BMCR_SPEED1000; - lpagb |= LPA_1000FULL; break; case 100: bmsr |= BMSR_100FULL; - bmcr |= BMCR_SPEED100; - lpa |= LPA_100FULL; break; case 10: bmsr |= BMSR_10FULL; - lpa |= LPA_10FULL; break; default: - pr_warn("fixed phy: unknown speed\n"); - return -EINVAL; + break; } } else { switch (fp->status.speed) { case 1000: bmsr |= BMSR_ESTATEN; - bmcr |= BMCR_SPEED1000; - lpagb |= LPA_1000HALF; break; case 100: bmsr |= BMSR_100HALF; - bmcr |= BMCR_SPEED100; - lpa |= LPA_100HALF; break; case 10: bmsr |= BMSR_10HALF; - lpa |= LPA_10HALF; break; default: - pr_warn("fixed phy: unknown speed\n"); - return -EINVAL; + break; } } - if (fp->status.pause) - lpa |= LPA_PAUSE_CAP; + if (fp->status.link) { + bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE; + + if (fp->status.duplex) { + bmcr |= BMCR_FULLDPLX; + + switch (fp->status.speed) { + case 1000: + bmcr |= BMCR_SPEED1000; + lpagb |= LPA_1000FULL; + break; + case 100: + bmcr |= BMCR_SPEED100; + lpa |= LPA_100FULL; + break; + case 10: + lpa |= LPA_10FULL; + break; + default: + pr_warn("fixed phy: unknown speed\n"); + return -EINVAL; + } + } else { + switch (fp->status.speed) { + case 1000: + bmcr |= BMCR_SPEED1000; + lpagb |= LPA_1000HALF; + break; + case 100: + bmcr |= BMCR_SPEED100; + lpa |= LPA_100HALF; + break; + case 10: + lpa |= LPA_10HALF; + break; + default: + pr_warn("fixed phy: unknown speed\n"); + return -EINVAL; + } + } - if (fp->status.asym_pause) - lpa |= LPA_PAUSE_ASYM; + if (fp->status.pause) + lpa |= LPA_PAUSE_CAP; + + if (fp->status.asym_pause) + lpa |= LPA_PAUSE_ASYM; + } -done: fp->regs[MII_PHYSID1] = 0; fp->regs[MII_PHYSID2] = 0; @@ -192,7 +220,7 @@ int fixed_phy_update_state(struct phy_device *phydev, struct fixed_mdio_bus *fmb = &platform_fmb; struct fixed_phy *fp; - if (!phydev || !phydev->bus) + if (!phydev || phydev->bus != fmb->mii_bus) return -EINVAL; list_for_each_entry(fp, &fmb->phys, node) { @@ -215,7 +243,8 @@ int fixed_phy_update_state(struct phy_device *phydev, EXPORT_SYMBOL(fixed_phy_update_state); int fixed_phy_add(unsigned int irq, int phy_addr, - struct fixed_phy_status *status) + struct fixed_phy_status *status, + int link_gpio) { int ret; struct fixed_mdio_bus *fmb = &platform_fmb; @@ -231,15 +260,26 @@ int fixed_phy_add(unsigned int irq, int phy_addr, fp->addr = phy_addr; fp->status = *status; + fp->link_gpio = link_gpio; + + if (gpio_is_valid(fp->link_gpio)) { + ret = gpio_request_one(fp->link_gpio, GPIOF_DIR_IN, + "fixed-link-gpio-link"); + if (ret) + goto err_regs; + } ret = fixed_phy_update_regs(fp); if (ret) - goto err_regs; + goto err_gpio; list_add_tail(&fp->node, &fmb->phys); return 0; +err_gpio: + if (gpio_is_valid(fp->link_gpio)) + gpio_free(fp->link_gpio); err_regs: kfree(fp); return ret; @@ -254,6 +294,8 @@ void fixed_phy_del(int phy_addr) list_for_each_entry_safe(fp, tmp, &fmb->phys, node) { if (fp->addr == phy_addr) { list_del(&fp->node); + if (gpio_is_valid(fp->link_gpio)) + gpio_free(fp->link_gpio); kfree(fp); return; } @@ -266,6 +308,7 @@ static DEFINE_SPINLOCK(phy_fixed_addr_lock); struct phy_device *fixed_phy_register(unsigned int irq, struct fixed_phy_status *status, + int link_gpio, struct device_node *np) { struct fixed_mdio_bus *fmb = &platform_fmb; @@ -282,7 +325,7 @@ struct phy_device *fixed_phy_register(unsigned int irq, phy_addr = phy_fixed_addr++; spin_unlock(&phy_fixed_addr_lock); - ret = fixed_phy_add(PHY_POLL, phy_addr, status); + ret = fixed_phy_add(irq, phy_addr, status, link_gpio); if (ret < 0) return ERR_PTR(ret); @@ -292,8 +335,30 @@ struct phy_device *fixed_phy_register(unsigned int irq, return ERR_PTR(-EINVAL); } + /* propagate the fixed link values to struct phy_device */ + phy->link = status->link; + if (status->link) { + phy->speed = status->speed; + phy->duplex = status->duplex; + phy->pause = status->pause; + phy->asym_pause = status->asym_pause; + } + of_node_get(np); phy->dev.of_node = np; + phy->is_pseudo_fixed_link = true; + + switch (status->speed) { + case SPEED_1000: + phy->supported = PHY_1000BT_FEATURES; + break; + case SPEED_100: + phy->supported = PHY_100BT_FEATURES; + break; + case SPEED_10: + default: + phy->supported = PHY_10BT_FEATURES; + } ret = phy_device_register(phy); if (ret) { |