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Zang Roy-r619112b9d7462006-06-13 15:07:23 +08001/*
2 * tsi108/109 device setup code
3 *
4 * Maintained by Roy Zang < tie-fei.zang@freescale.com >
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080012#include <linux/stddef.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/errno.h>
16#include <linux/major.h>
17#include <linux/delay.h>
18#include <linux/irq.h>
Paul Gortmaker4b16f8e2011-07-22 18:24:23 -040019#include <linux/export.h>
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080020#include <linux/device.h>
21#include <linux/platform_device.h>
David Daney4b6ba8a2010-10-26 15:07:13 -070022#include <linux/of_net.h>
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080023#include <asm/tsi108.h>
24
Arun Sharma600634972011-07-26 16:09:06 -070025#include <linux/atomic.h>
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080026#include <asm/io.h>
27#include <asm/irq.h>
28#include <asm/prom.h>
29#include <mm/mmu_decl.h>
30
31#undef DEBUG
32
33#ifdef DEBUG
34#define DBG(fmt...) do { printk(fmt); } while(0)
35#else
36#define DBG(fmt...) do { } while(0)
37#endif
38
39static phys_addr_t tsi108_csr_base = -1;
40
41phys_addr_t get_csrbase(void)
42{
43 struct device_node *tsi;
44
45 if (tsi108_csr_base != -1)
46 return tsi108_csr_base;
47
48 tsi = of_find_node_by_type(NULL, "tsi-bridge");
49 if (tsi) {
50 unsigned int size;
Stephen Rothwelle2eb6392007-04-03 22:26:41 +100051 const void *prop = of_get_property(tsi, "reg", &size);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080052 tsi108_csr_base = of_translate_address(tsi, prop);
53 of_node_put(tsi);
54 };
55 return tsi108_csr_base;
56}
57
58u32 get_vir_csrbase(void)
59{
60 return (u32) (ioremap(get_csrbase(), 0x10000));
61}
62
63EXPORT_SYMBOL(get_csrbase);
64EXPORT_SYMBOL(get_vir_csrbase);
65
66static int __init tsi108_eth_of_init(void)
67{
68 struct device_node *np;
Cyrill Gorcunov26cb7d82007-11-30 06:44:36 +110069 unsigned int i = 0;
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080070 struct platform_device *tsi_eth_dev;
71 struct resource res;
72 int ret;
73
Cyrill Gorcunov26cb7d82007-11-30 06:44:36 +110074 for_each_compatible_node(np, "network", "tsi108-ethernet") {
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080075 struct resource r[2];
David Gibsone58ca3d2007-06-13 14:53:00 +100076 struct device_node *phy, *mdio;
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080077 hw_info tsi_eth_data;
Stephen Rothwelle2eb6392007-04-03 22:26:41 +100078 const unsigned int *phy_id;
Zang Roy-r61911c3386e42006-10-18 11:18:58 +080079 const void *mac_addr;
Stephen Rothwelle2eb6392007-04-03 22:26:41 +100080 const phandle *ph;
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080081
82 memset(r, 0, sizeof(r));
83 memset(&tsi_eth_data, 0, sizeof(tsi_eth_data));
84
85 ret = of_address_to_resource(np, 0, &r[0]);
Joe Perches518fdae2010-11-12 14:49:19 +000086 DBG("%s: name:start->end = %s:%pR\n",
87 __func__, r[0].name, &r[0]);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080088 if (ret)
89 goto err;
90
91 r[1].name = "tx";
Zang Roy-r61911c4342ff2006-08-23 10:19:50 +080092 r[1].start = irq_of_parse_and_map(np, 0);
93 r[1].end = irq_of_parse_and_map(np, 0);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080094 r[1].flags = IORESOURCE_IRQ;
Joe Perches518fdae2010-11-12 14:49:19 +000095 DBG("%s: name:start->end = %s:%pR\n",
96 __func__, r[1].name, &r[1]);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +080097
98 tsi_eth_dev =
Cyrill Gorcunov26cb7d82007-11-30 06:44:36 +110099 platform_device_register_simple("tsi-ethernet", i++, &r[0],
Zang Roy-r61911c4342ff2006-08-23 10:19:50 +0800100 1);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800101
102 if (IS_ERR(tsi_eth_dev)) {
103 ret = PTR_ERR(tsi_eth_dev);
104 goto err;
105 }
106
Josh Boyerc1b78d02007-05-08 07:26:22 +1000107 mac_addr = of_get_mac_address(np);
108 if (mac_addr)
109 memcpy(tsi_eth_data.mac_addr, mac_addr, 6);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800110
David Gibsone58ca3d2007-06-13 14:53:00 +1000111 ph = of_get_property(np, "mdio-handle", NULL);
112 mdio = of_find_node_by_phandle(*ph);
113 ret = of_address_to_resource(mdio, 0, &res);
114 of_node_put(mdio);
115 if (ret)
116 goto unreg;
117
Stephen Rothwelle2eb6392007-04-03 22:26:41 +1000118 ph = of_get_property(np, "phy-handle", NULL);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800119 phy = of_find_node_by_phandle(*ph);
120
121 if (phy == NULL) {
122 ret = -ENODEV;
123 goto unreg;
124 }
125
David Gibsone58ca3d2007-06-13 14:53:00 +1000126 phy_id = of_get_property(phy, "reg", NULL);
127
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800128 tsi_eth_data.regs = r[0].start;
129 tsi_eth_data.phyregs = res.start;
130 tsi_eth_data.phy = *phy_id;
Zang Roy-r61911c4342ff2006-08-23 10:19:50 +0800131 tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
David Gibsone58ca3d2007-06-13 14:53:00 +1000132
133 /* Some boards with the TSI108 bridge (e.g. Holly)
134 * have a miswiring of the ethernet PHYs which
135 * requires a workaround. The special
136 * "txc-rxc-delay-disable" property enables this
137 * workaround. FIXME: Need to port the tsi108_eth
138 * driver itself to phylib and use a non-misleading
139 * name for the workaround flag - it's not actually to
140 * do with the model of PHY in use */
141 if (of_get_property(phy, "txc-rxc-delay-disable", NULL))
Josh Boyerc1b78d02007-05-08 07:26:22 +1000142 tsi_eth_data.phy_type = TSI108_PHY_BCM54XX;
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800143 of_node_put(phy);
David Gibsone58ca3d2007-06-13 14:53:00 +1000144
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800145 ret =
146 platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
147 sizeof(hw_info));
148 if (ret)
149 goto unreg;
150 }
151 return 0;
152unreg:
153 platform_device_unregister(tsi_eth_dev);
154err:
Cyrill Gorcunov26cb7d82007-11-30 06:44:36 +1100155 of_node_put(np);
Zang Roy-r619112b9d7462006-06-13 15:07:23 +0800156 return ret;
157}
158
159arch_initcall(tsi108_eth_of_init);