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 39 static phys_addr_t tsi108_csr_base = -1; 40 41 phys_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 58 u32 get_vir_csrbase(void) 59 { 60 return (u32) (ioremap(get_csrbase(), 0x10000)); 61 } 62 63 EXPORT_SYMBOL(get_csrbase); 64 EXPORT_SYMBOL(get_vir_csrbase); 65 66 static 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; 152 unreg: 153 platform_device_unregister(tsi_eth_dev); 154 err: 155 of_node_put(np); 156 return ret; 157 } 158 159 arch_initcall(tsi108_eth_of_init); 160