Root/target/linux/generic/patches-3.3/710-phy-add-mdio_register_board_info.patch

1--- a/drivers/net/phy/mdio_bus.c
2+++ b/drivers/net/phy/mdio_bus.c
3@@ -36,6 +36,8 @@
4 #include <asm/irq.h>
5 #include <asm/uaccess.h>
6 
7+#include "mdio-boardinfo.h"
8+
9 /**
10  * mdiobus_alloc_size - allocate a mii_bus structure
11  * @size: extra amount of memory to allocate for private storage.
12@@ -192,15 +194,33 @@ void mdiobus_free(struct mii_bus *bus)
13 }
14 EXPORT_SYMBOL(mdiobus_free);
15 
16+static void mdiobus_setup_phydev_from_boardinfo(struct mii_bus *bus,
17+ struct phy_device *phydev,
18+ struct mdio_board_info *bi)
19+{
20+ if (strcmp(bus->id, bi->bus_id) ||
21+ bi->phy_addr != phydev->addr)
22+ return;
23+
24+ phydev->dev.platform_data = (void *) bi->platform_data;
25+}
26+
27 struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)
28 {
29     struct phy_device *phydev;
30+ struct mdio_board_entry *be;
31     int err;
32 
33     phydev = get_phy_device(bus, addr);
34     if (IS_ERR(phydev) || phydev == NULL)
35         return phydev;
36 
37+ mutex_lock(&__mdio_board_lock);
38+ list_for_each_entry(be, &__mdio_board_list, list)
39+ mdiobus_setup_phydev_from_boardinfo(bus, phydev,
40+ &be->board_info);
41+ mutex_unlock(&__mdio_board_lock);
42+
43     err = phy_device_register(phydev);
44     if (err) {
45         phy_device_free(phydev);
46--- a/include/linux/phy.h
47+++ b/include/linux/phy.h
48@@ -543,4 +543,22 @@ int __init mdio_bus_init(void);
49 void mdio_bus_exit(void);
50 
51 extern struct bus_type mdio_bus_type;
52+
53+struct mdio_board_info {
54+ const char *bus_id;
55+ int phy_addr;
56+
57+ const void *platform_data;
58+};
59+
60+#ifdef CONFIG_MDIO_BOARDINFO
61+int mdiobus_register_board_info(const struct mdio_board_info *info, unsigned n);
62+#else
63+static inline int
64+mdiobus_register_board_info(const struct mdio_board_info *info, unsigned n)
65+{
66+ return 0;
67+}
68+#endif
69+
70 #endif /* __PHY_H */
71--- a/drivers/net/phy/Kconfig
72+++ b/drivers/net/phy/Kconfig
73@@ -13,6 +13,10 @@ menuconfig PHYLIB
74 
75 if PHYLIB
76 
77+config MDIO_BOARDINFO
78+ bool
79+ default y
80+
81 config SWCONFIG
82     tristate "Switch configuration API"
83     ---help---
84--- a/drivers/net/phy/Makefile
85+++ b/drivers/net/phy/Makefile
86@@ -2,6 +2,8 @@
87 
88 libphy-objs := phy.o phy_device.o mdio_bus.o
89 
90+obj-$(CONFIG_MDIO_BOARDINFO) += mdio-boardinfo.o
91+
92 obj-$(CONFIG_PHYLIB) += libphy.o
93 obj-$(CONFIG_SWCONFIG) += swconfig.o
94 obj-$(CONFIG_MARVELL_PHY) += marvell.o
95--- /dev/null
96+++ b/drivers/net/phy/mdio-boardinfo.c
97@@ -0,0 +1,58 @@
98+/*
99+ * mdio-boardinfo.c - collect pre-declarations of PHY devices
100+ *
101+ * This program is free software; you can redistribute it and/or modify it
102+ * under the terms of the GNU General Public License as published by the
103+ * Free Software Foundation; either version 2 of the License, or (at your
104+ * option) any later version.
105+ *
106+ */
107+
108+#include <linux/kernel.h>
109+#include <linux/phy.h>
110+#include <linux/slab.h>
111+#include <linux/export.h>
112+#include <linux/mutex.h>
113+#include <linux/phy.h>
114+
115+#include "mdio-boardinfo.h"
116+
117+/*
118+ * These symbols are exported ONLY FOR the mdio_bus component.
119+ * No other users will be supported.
120+ */
121+
122+LIST_HEAD(__mdio_board_list);
123+EXPORT_SYMBOL_GPL(__mdio_board_list);
124+
125+DEFINE_MUTEX(__mdio_board_lock);
126+EXPORT_SYMBOL_GPL(__mdio_board_lock);
127+
128+/**
129+ * mdio_register_board_info - register PHY devices for a given board
130+ * @info: array of chip descriptors
131+ * @n: how many descriptors are provided
132+ * Context: can sleep
133+ *
134+ * The board info passed can safely be __initdata ... but be careful of
135+ * any embedded pointers (platform_data, etc), they're copied as-is.
136+ */
137+int __init
138+mdiobus_register_board_info(struct mdio_board_info const *info, unsigned n)
139+{
140+ struct mdio_board_entry *be;
141+ int i;
142+
143+ be = kzalloc(n * sizeof(*be), GFP_KERNEL);
144+ if (!be)
145+ return -ENOMEM;
146+
147+ for (i = 0; i < n; i++, be++, info++) {
148+ memcpy(&be->board_info, info, sizeof(*info));
149+ mutex_lock(&__mdio_board_lock);
150+ list_add_tail(&be->list, &__mdio_board_list);
151+ mutex_unlock(&__mdio_board_lock);
152+ }
153+
154+ return 0;
155+}
156--- /dev/null
157+++ b/drivers/net/phy/mdio-boardinfo.h
158@@ -0,0 +1,22 @@
159+/*
160+ * mdio-boardinfo.h - boardinfo interface internal to the mdio_bus component
161+ *
162+ * This program is free software; you can redistribute it and/or modify it
163+ * under the terms of the GNU General Public License as published by the
164+ * Free Software Foundation; either version 2 of the License, or (at your
165+ * option) any later version.
166+ *
167+ */
168+
169+#include <linux/mutex.h>
170+
171+struct mdio_board_entry {
172+ struct list_head list;
173+ struct mdio_board_info board_info;
174+};
175+
176+/* __mdio_board_lock protects __mdio_board_list
177+ * only mdio_bus components are allowed to use these symbols.
178+ */
179+extern struct mutex __mdio_board_lock;
180+extern struct list_head __mdio_board_list;
181--- a/drivers/net/Makefile
182+++ b/drivers/net/Makefile
183@@ -15,7 +15,7 @@ obj-$(CONFIG_MII) += mii.o
184 obj-$(CONFIG_MDIO) += mdio.o
185 obj-$(CONFIG_NET) += Space.o loopback.o
186 obj-$(CONFIG_NETCONSOLE) += netconsole.o
187-obj-$(CONFIG_PHYLIB) += phy/
188+obj-y += phy/
189 obj-$(CONFIG_RIONET) += rionet.o
190 obj-$(CONFIG_NET_TEAM) += team/
191 obj-$(CONFIG_TUN) += tun.o
192

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