1/*
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
12#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>
19#include <linux/export.h>
20#include <linux/device.h>
21#include <linux/platform_device.h>
22#include <linux/of_net.h>
23#include <asm/tsi108.h>
24
25#include <linux/atomic.h>
26#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;
51		const void *prop = of_get_property(tsi, "reg", &size);
52		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;
69	unsigned int i = 0;
70	struct platform_device *tsi_eth_dev;
71	struct resource res;
72	int ret;
73
74	for_each_compatible_node(np, "network", "tsi108-ethernet") {
75		struct resource r[2];
76		struct device_node *phy, *mdio;
77		hw_info tsi_eth_data;
78		const unsigned int *phy_id;
79		const void *mac_addr;
80		const phandle *ph;
81
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]);
86		DBG("%s: name:start->end = %s:%pR\n",
87		    __func__, r[0].name, &r[0]);
88		if (ret)
89			goto err;
90
91		r[1].name = "tx";
92		r[1].start = irq_of_parse_and_map(np, 0);
93		r[1].end = irq_of_parse_and_map(np, 0);
94		r[1].flags = IORESOURCE_IRQ;
95		DBG("%s: name:start->end = %s:%pR\n",
96			__func__, r[1].name, &r[1]);
97
98		tsi_eth_dev =
99		    platform_device_register_simple("tsi-ethernet", i++, &r[0],
100						    1);
101
102		if (IS_ERR(tsi_eth_dev)) {
103			ret = PTR_ERR(tsi_eth_dev);
104			goto err;
105		}
106
107		mac_addr = of_get_mac_address(np);
108		if (mac_addr)
109			memcpy(tsi_eth_data.mac_addr, mac_addr, 6);
110
111		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
118		ph = of_get_property(np, "phy-handle", NULL);
119		phy = of_find_node_by_phandle(*ph);
120
121		if (phy == NULL) {
122			ret = -ENODEV;
123			goto unreg;
124		}
125
126		phy_id = of_get_property(phy, "reg", NULL);
127
128		tsi_eth_data.regs = r[0].start;
129		tsi_eth_data.phyregs = res.start;
130		tsi_eth_data.phy = *phy_id;
131		tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
132
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))
142			tsi_eth_data.phy_type = TSI108_PHY_BCM54XX;
143		of_node_put(phy);
144
145		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:
155	of_node_put(np);
156	return ret;
157}
158
159arch_initcall(tsi108_eth_of_init);
160