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/module.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 <asm/system.h> 26 #include <linux/atomic.h> 27 #include <asm/io.h> 28 #include <asm/irq.h> 29 #include <asm/prom.h> 30 #include <mm/mmu_decl.h> 31 32 #undef DEBUG 33 34 #ifdef DEBUG 35 #define DBG(fmt...) do { printk(fmt); } while(0) 36 #else 37 #define DBG(fmt...) do { } while(0) 38 #endif 39 40 static phys_addr_t tsi108_csr_base = -1; 41 42 phys_addr_t get_csrbase(void) 43 { 44 struct device_node *tsi; 45 46 if (tsi108_csr_base != -1) 47 return tsi108_csr_base; 48 49 tsi = of_find_node_by_type(NULL, "tsi-bridge"); 50 if (tsi) { 51 unsigned int size; 52 const void *prop = of_get_property(tsi, "reg", &size); 53 tsi108_csr_base = of_translate_address(tsi, prop); 54 of_node_put(tsi); 55 }; 56 return tsi108_csr_base; 57 } 58 59 u32 get_vir_csrbase(void) 60 { 61 return (u32) (ioremap(get_csrbase(), 0x10000)); 62 } 63 64 EXPORT_SYMBOL(get_csrbase); 65 EXPORT_SYMBOL(get_vir_csrbase); 66 67 static int __init tsi108_eth_of_init(void) 68 { 69 struct device_node *np; 70 unsigned int i = 0; 71 struct platform_device *tsi_eth_dev; 72 struct resource res; 73 int ret; 74 75 for_each_compatible_node(np, "network", "tsi108-ethernet") { 76 struct resource r[2]; 77 struct device_node *phy, *mdio; 78 hw_info tsi_eth_data; 79 const unsigned int *phy_id; 80 const void *mac_addr; 81 const phandle *ph; 82 83 memset(r, 0, sizeof(r)); 84 memset(&tsi_eth_data, 0, sizeof(tsi_eth_data)); 85 86 ret = of_address_to_resource(np, 0, &r[0]); 87 DBG("%s: name:start->end = %s:%pR\n", 88 __func__, r[0].name, &r[0]); 89 if (ret) 90 goto err; 91 92 r[1].name = "tx"; 93 r[1].start = irq_of_parse_and_map(np, 0); 94 r[1].end = irq_of_parse_and_map(np, 0); 95 r[1].flags = IORESOURCE_IRQ; 96 DBG("%s: name:start->end = %s:%pR\n", 97 __func__, r[1].name, &r[1]); 98 99 tsi_eth_dev = 100 platform_device_register_simple("tsi-ethernet", i++, &r[0], 101 1); 102 103 if (IS_ERR(tsi_eth_dev)) { 104 ret = PTR_ERR(tsi_eth_dev); 105 goto err; 106 } 107 108 mac_addr = of_get_mac_address(np); 109 if (mac_addr) 110 memcpy(tsi_eth_data.mac_addr, mac_addr, 6); 111 112 ph = of_get_property(np, "mdio-handle", NULL); 113 mdio = of_find_node_by_phandle(*ph); 114 ret = of_address_to_resource(mdio, 0, &res); 115 of_node_put(mdio); 116 if (ret) 117 goto unreg; 118 119 ph = of_get_property(np, "phy-handle", NULL); 120 phy = of_find_node_by_phandle(*ph); 121 122 if (phy == NULL) { 123 ret = -ENODEV; 124 goto unreg; 125 } 126 127 phy_id = of_get_property(phy, "reg", NULL); 128 129 tsi_eth_data.regs = r[0].start; 130 tsi_eth_data.phyregs = res.start; 131 tsi_eth_data.phy = *phy_id; 132 tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0); 133 134 /* Some boards with the TSI108 bridge (e.g. Holly) 135 * have a miswiring of the ethernet PHYs which 136 * requires a workaround. The special 137 * "txc-rxc-delay-disable" property enables this 138 * workaround. FIXME: Need to port the tsi108_eth 139 * driver itself to phylib and use a non-misleading 140 * name for the workaround flag - it's not actually to 141 * do with the model of PHY in use */ 142 if (of_get_property(phy, "txc-rxc-delay-disable", NULL)) 143 tsi_eth_data.phy_type = TSI108_PHY_BCM54XX; 144 of_node_put(phy); 145 146 ret = 147 platform_device_add_data(tsi_eth_dev, &tsi_eth_data, 148 sizeof(hw_info)); 149 if (ret) 150 goto unreg; 151 } 152 return 0; 153 unreg: 154 platform_device_unregister(tsi_eth_dev); 155 err: 156 of_node_put(np); 157 return ret; 158 } 159 160 arch_initcall(tsi108_eth_of_init); 161