diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/base.c | 91 | ||||
| -rw-r--r-- | drivers/of/fdt.c | 2 | ||||
| -rw-r--r-- | drivers/of/of_mdio.c | 23 | ||||
| -rw-r--r-- | drivers/of/of_mtd.c | 34 | ||||
| -rw-r--r-- | drivers/of/of_net.c | 26 |
5 files changed, 103 insertions, 73 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 4557a142c752..6d4ee22708c9 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1828,17 +1828,13 @@ int of_update_property(struct device_node *np, struct property *newprop) next = &(*next)->next; } raw_spin_unlock_irqrestore(&devtree_lock, flags); - if (rc) - return rc; + if (!found) + return -ENODEV; /* Update the sysfs attribute */ - if (oldprop) - sysfs_remove_bin_file(&np->kobj, &oldprop->attr); + sysfs_remove_bin_file(&np->kobj, &oldprop->attr); __of_add_property_sysfs(np, newprop); - if (!found) - return -ENODEV; - return 0; } @@ -2196,64 +2192,65 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent, struct device_node *prev) { struct device_node *endpoint; - struct device_node *port = NULL; + struct device_node *port; if (!parent) return NULL; + /* + * Start by locating the port node. If no previous endpoint is specified + * search for the first port node, otherwise get the previous endpoint + * parent port node. + */ if (!prev) { struct device_node *node; - /* - * It's the first call, we have to find a port subnode - * within this node or within an optional 'ports' node. - */ + node = of_get_child_by_name(parent, "ports"); if (node) parent = node; port = of_get_child_by_name(parent, "port"); - - if (port) { - /* Found a port, get an endpoint. */ - endpoint = of_get_next_child(port, NULL); - of_node_put(port); - } else { - endpoint = NULL; - } - - if (!endpoint) - pr_err("%s(): no endpoint nodes specified for %s\n", - __func__, parent->full_name); of_node_put(node); - return endpoint; - } - - port = of_get_parent(prev); - if (WARN_ONCE(!port, "%s(): endpoint %s has no parent node\n", - __func__, prev->full_name)) - return NULL; + if (!port) { + pr_err("%s(): no port node found in %s\n", + __func__, parent->full_name); + return NULL; + } + } else { + port = of_get_parent(prev); + if (WARN_ONCE(!port, "%s(): endpoint %s has no parent node\n", + __func__, prev->full_name)) + return NULL; - /* Avoid dropping prev node refcount to 0. */ - of_node_get(prev); - endpoint = of_get_next_child(port, prev); - if (endpoint) { - of_node_put(port); - return endpoint; + /* + * Avoid dropping prev node refcount to 0 when getting the next + * child below. + */ + of_node_get(prev); } - /* No more endpoints under this port, try the next one. */ - do { - port = of_get_next_child(parent, port); - if (!port) - return NULL; - } while (of_node_cmp(port->name, "port")); + while (1) { + /* + * Now that we have a port node, get the next endpoint by + * getting the next child. If the previous endpoint is NULL this + * will return the first child. + */ + endpoint = of_get_next_child(port, prev); + if (endpoint) { + of_node_put(port); + return endpoint; + } - /* Pick up the first endpoint in this port. */ - endpoint = of_get_next_child(port, NULL); - of_node_put(port); + /* No more endpoints under this port, try the next one. */ + prev = NULL; - return endpoint; + do { + port = of_get_next_child(parent, port); + if (!port) + return NULL; + } while (of_node_cmp(port->name, "port")); + } } EXPORT_SYMBOL(of_graph_get_next_endpoint); diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index fa16a912a927..7a2ef7bb8022 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -491,7 +491,7 @@ static int __init __reserved_mem_reserve_reg(unsigned long node, * in /reserved-memory matches the values supported by the current implementation, * also check if ranges property has been provided */ -static int __reserved_mem_check_root(unsigned long node) +static int __init __reserved_mem_check_root(unsigned long node) { __be32 *prop; diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 5b3c24f3cde5..9a95831bd065 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -43,6 +43,23 @@ static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed) } } +/* Extract the clause 22 phy ID from the compatible string of the form + * ethernet-phy-idAAAA.BBBB */ +static int of_get_phy_id(struct device_node *device, u32 *phy_id) +{ + struct property *prop; + const char *cp; + unsigned int upper, lower; + + of_property_for_each_string(device, "compatible", prop, cp) { + if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) { + *phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF); + return 0; + } + } + return -EINVAL; +} + static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *child, u32 addr) { @@ -50,11 +67,15 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi bool is_c45; int rc; u32 max_speed = 0; + u32 phy_id; is_c45 = of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45"); - phy = get_phy_device(mdio, addr, is_c45); + if (!is_c45 && !of_get_phy_id(child, &phy_id)) + phy = phy_device_create(mdio, addr, phy_id, 0, NULL); + else + phy = get_phy_device(mdio, addr, is_c45); if (!phy || IS_ERR(phy)) return 1; diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c index a27ec94877e4..b7361ed70537 100644 --- a/drivers/of/of_mtd.c +++ b/drivers/of/of_mtd.c @@ -50,6 +50,40 @@ int of_get_nand_ecc_mode(struct device_node *np) EXPORT_SYMBOL_GPL(of_get_nand_ecc_mode); /** + * of_get_nand_ecc_step_size - Get ECC step size associated to + * the required ECC strength (see below). + * @np: Pointer to the given device_node + * + * return the ECC step size, or errno in error case. + */ +int of_get_nand_ecc_step_size(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-step-size", &val); + return ret ? ret : val; +} +EXPORT_SYMBOL_GPL(of_get_nand_ecc_step_size); + +/** + * of_get_nand_ecc_strength - Get required ECC strength over the + * correspnding step size as defined by 'nand-ecc-size' + * @np: Pointer to the given device_node + * + * return the ECC strength, or errno in error case. + */ +int of_get_nand_ecc_strength(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-strength", &val); + return ret ? ret : val; +} +EXPORT_SYMBOL_GPL(of_get_nand_ecc_strength); + +/** * of_get_nand_bus_width - Get nand bus witdh for given device_node * @np: Pointer to the given device_node * diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c index a3df3428dac6..73e14184aafe 100644 --- a/drivers/of/of_net.c +++ b/drivers/of/of_net.c @@ -12,28 +12,6 @@ #include <linux/export.h> /** - * It maps 'enum phy_interface_t' found in include/linux/phy.h - * into the device tree binding of 'phy-mode' or 'phy-connection-type', - * so that Ethernet device driver can get phy interface from device tree. - */ -static const char *phy_modes[] = { - [PHY_INTERFACE_MODE_NA] = "", - [PHY_INTERFACE_MODE_MII] = "mii", - [PHY_INTERFACE_MODE_GMII] = "gmii", - [PHY_INTERFACE_MODE_SGMII] = "sgmii", - [PHY_INTERFACE_MODE_TBI] = "tbi", - [PHY_INTERFACE_MODE_REVMII] = "rev-mii", - [PHY_INTERFACE_MODE_RMII] = "rmii", - [PHY_INTERFACE_MODE_RGMII] = "rgmii", - [PHY_INTERFACE_MODE_RGMII_ID] = "rgmii-id", - [PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid", - [PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid", - [PHY_INTERFACE_MODE_RTBI] = "rtbi", - [PHY_INTERFACE_MODE_SMII] = "smii", - [PHY_INTERFACE_MODE_XGMII] = "xgmii", -}; - -/** * of_get_phy_mode - Get phy mode for given device_node * @np: Pointer to the given device_node * @@ -52,8 +30,8 @@ int of_get_phy_mode(struct device_node *np) if (err < 0) return err; - for (i = 0; i < ARRAY_SIZE(phy_modes); i++) - if (!strcasecmp(pm, phy_modes[i])) + for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) + if (!strcasecmp(pm, phy_modes(i))) return i; return -ENODEV; |