These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / net / ethernet / smsc / smsc911x.c

diff --git a/kernel/drivers/net/ethernet/smsc/smsc911x.c b/kernel/drivers/net/ethernet/smsc/smsc911x.c
index 959aeea..219a99b 100644 (file)
--- a/kernel/drivers/net/ethernet/smsc/smsc911x.c
+++ b/kernel/drivers/net/ethernet/smsc/smsc911x.c
@@ -59,7 +59,9 @@
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
 #include <linux/of_net.h>
+#include <linux/acpi.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 
 #include "smsc911x.h"
 
@@ -807,22 +809,17 @@ static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata)
 
 static int smsc911x_phy_reset(struct smsc911x_data *pdata)
 {
-       struct phy_device *phy_dev = pdata->phy_dev;
        unsigned int temp;
        unsigned int i = 100000;
 
-       BUG_ON(!phy_dev);
-       BUG_ON(!phy_dev->bus);
-
-       SMSC_TRACE(pdata, hw, "Performing PHY BCR Reset");
-       smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, BMCR_RESET);
+       temp = smsc911x_reg_read(pdata, PMT_CTRL);
+       smsc911x_reg_write(pdata, PMT_CTRL, temp | PMT_CTRL_PHY_RST_);
        do {
                msleep(1);
-               temp = smsc911x_mii_read(phy_dev->bus, phy_dev->addr,
-                       MII_BMCR);
-       } while ((i--) && (temp & BMCR_RESET));
+               temp = smsc911x_reg_read(pdata, PMT_CTRL);
+       } while ((i--) && (temp & PMT_CTRL_PHY_RST_));
 
-       if (temp & BMCR_RESET) {
+       if (unlikely(temp & PMT_CTRL_PHY_RST_)) {
                SMSC_WARN(pdata, hw, "PHY reset failed to complete");
                return -EIO;
        }
@@ -1050,6 +1047,7 @@ static int smsc911x_mii_probe(struct net_device *dev)
 #ifdef USE_PHY_WORK_AROUND
        if (smsc911x_phy_loopbacktest(dev) < 0) {
                SMSC_WARN(pdata, hw, "Failed Loop Back Test");
+               phy_disconnect(phydev);
                return -ENODEV;
        }
        SMSC_TRACE(pdata, hw, "Passed Loop Back Test");
@@ -2293,7 +2291,7 @@ static int smsc911x_init(struct net_device *dev)
        }
 
        /* Reset the LAN911x */
-       if (smsc911x_soft_reset(pdata))
+       if (smsc911x_phy_reset(pdata) || smsc911x_soft_reset(pdata))
                return -ENODEV;
 
        dev->flags |= IFF_MULTICAST;
@@ -2362,59 +2360,50 @@ static const struct smsc911x_ops shifted_smsc911x_ops = {
        .tx_writefifo = smsc911x_tx_writefifo_shift,
 };
 
-#ifdef CONFIG_OF
-static int smsc911x_probe_config_dt(struct smsc911x_platform_config *config,
-                                   struct device_node *np)
+static int smsc911x_probe_config(struct smsc911x_platform_config *config,
+                                struct device *dev)
 {
-       const char *mac;
+       int phy_interface;
        u32 width = 0;
+       int err;
 
-       if (!np)
-               return -ENODEV;
+       phy_interface = device_get_phy_mode(dev);
+       if (phy_interface < 0)
+               phy_interface = PHY_INTERFACE_MODE_NA;
+       config->phy_interface = phy_interface;
 
-       config->phy_interface = of_get_phy_mode(np);
+       device_get_mac_address(dev, config->mac, ETH_ALEN);
 
-       mac = of_get_mac_address(np);
-       if (mac)
-               memcpy(config->mac, mac, ETH_ALEN);
-
-       of_property_read_u32(np, "reg-shift", &config->shift);
-
-       of_property_read_u32(np, "reg-io-width", &width);
-       if (width == 4)
+       err = device_property_read_u32(dev, "reg-io-width", &width);
+       if (err == -ENXIO)
+               return err;
+       if (!err && width == 4)
                config->flags |= SMSC911X_USE_32BIT;
        else
                config->flags |= SMSC911X_USE_16BIT;
 
-       if (of_get_property(np, "smsc,irq-active-high", NULL))
+       device_property_read_u32(dev, "reg-shift", &config->shift);
+
+       if (device_property_present(dev, "smsc,irq-active-high"))
                config->irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH;
 
-       if (of_get_property(np, "smsc,irq-push-pull", NULL))
+       if (device_property_present(dev, "smsc,irq-push-pull"))
                config->irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL;
 
-       if (of_get_property(np, "smsc,force-internal-phy", NULL))
+       if (device_property_present(dev, "smsc,force-internal-phy"))
                config->flags |= SMSC911X_FORCE_INTERNAL_PHY;
 
-       if (of_get_property(np, "smsc,force-external-phy", NULL))
+       if (device_property_present(dev, "smsc,force-external-phy"))
                config->flags |= SMSC911X_FORCE_EXTERNAL_PHY;
 
-       if (of_get_property(np, "smsc,save-mac-address", NULL))
+       if (device_property_present(dev, "smsc,save-mac-address"))
                config->flags |= SMSC911X_SAVE_MAC_ADDRESS;
 
        return 0;
 }
-#else
-static inline int smsc911x_probe_config_dt(
-                               struct smsc911x_platform_config *config,
-                               struct device_node *np)
-{
-       return -ENODEV;
-}
-#endif /* CONFIG_OF */
 
 static int smsc911x_drv_probe(struct platform_device *pdev)
 {
-       struct device_node *np = pdev->dev.of_node;
        struct net_device *dev;
        struct smsc911x_data *pdata;
        struct smsc911x_platform_config *config = dev_get_platdata(&pdev->dev);
@@ -2435,7 +2424,10 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
        res_size = resource_size(res);
 
        irq = platform_get_irq(pdev, 0);
-       if (irq <= 0) {
+       if (irq == -EPROBE_DEFER) {
+               retval = -EPROBE_DEFER;
+               goto out_0;
+       } else if (irq <= 0) {
                pr_warn("Could not allocate irq resource\n");
                retval = -ENODEV;
                goto out_0;
@@ -2478,7 +2470,7 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
                goto out_disable_resources;
        }
 
-       retval = smsc911x_probe_config_dt(&pdata->config, np);
+       retval = smsc911x_probe_config(&pdata->config, &pdev->dev);
        if (retval && config) {
                /* copy config parameters across to pdata */
                memcpy(&pdata->config, config, sizeof(pdata->config));
@@ -2654,6 +2646,12 @@ static const struct of_device_id smsc911x_dt_ids[] = {
 MODULE_DEVICE_TABLE(of, smsc911x_dt_ids);
 #endif
 
+static const struct acpi_device_id smsc911x_acpi_match[] = {
+       { "ARMH9118", 0 },
+       { }
+};
+MODULE_DEVICE_TABLE(acpi, smsc911x_acpi_match);
+
 static struct platform_driver smsc911x_driver = {
        .probe = smsc911x_drv_probe,
        .remove = smsc911x_drv_remove,
@@ -2661,6 +2659,7 @@ static struct platform_driver smsc911x_driver = {
                .name   = SMSC_CHIPNAME,
                .pm     = SMSC911X_PM_OPS,
                .of_match_table = of_match_ptr(smsc911x_dt_ids),
+               .acpi_match_table = ACPI_PTR(smsc911x_acpi_match),
        },
 };