160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/*
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* tsi108/109 device setup code
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*
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* Maintained by Roy Zang < tie-fei.zang@freescale.com >
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/major.h>
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#include <linux/delay.h>
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#include <linux/irq.h>
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#include <linux/export.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/of_net.h>
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#include <asm/tsi108.h>
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#include <linux/atomic.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/prom.h>
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#include <mm/mmu_decl.h>
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#undef DEBUG
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#ifdef DEBUG
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#define DBG(fmt...) do { printk(fmt); } while(0)
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#else
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#define DBG(fmt...) do { } while(0)
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#endif
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static phys_addr_t tsi108_csr_base = -1;
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phys_addr_t get_csrbase(void)
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{
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struct device_node *tsi;
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if (tsi108_csr_base != -1)
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return tsi108_csr_base;
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tsi = of_find_node_by_type(NULL, "tsi-bridge");
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if (tsi) {
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unsigned int size;
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const void *prop = of_get_property(tsi, "reg", &size);
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tsi108_csr_base = of_translate_address(tsi, prop);
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of_node_put(tsi);
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};
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return tsi108_csr_base;
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}
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u32 get_vir_csrbase(void)
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{
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return (u32) (ioremap(get_csrbase(), 0x10000));
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}
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EXPORT_SYMBOL(get_csrbase);
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EXPORT_SYMBOL(get_vir_csrbase);
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static int __init tsi108_eth_of_init(void)
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{
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struct device_node *np;
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unsigned int i = 0;
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struct platform_device *tsi_eth_dev;
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struct resource res;
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int ret;
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for_each_compatible_node(np, "network", "tsi108-ethernet") {
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struct resource r[2];
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struct device_node *phy, *mdio;
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hw_info tsi_eth_data;
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const unsigned int *phy_id;
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const void *mac_addr;
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const phandle *ph;
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memset(r, 0, sizeof(r));
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memset(&tsi_eth_data, 0, sizeof(tsi_eth_data));
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ret = of_address_to_resource(np, 0, &r[0]);
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DBG("%s: name:start->end = %s:%pR\n",
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__func__, r[0].name, &r[0]);
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if (ret)
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goto err;
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r[1].name = "tx";
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r[1].start = irq_of_parse_and_map(np, 0);
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r[1].end = irq_of_parse_and_map(np, 0);
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r[1].flags = IORESOURCE_IRQ;
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DBG("%s: name:start->end = %s:%pR\n",
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__func__, r[1].name, &r[1]);
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tsi_eth_dev =
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platform_device_register_simple("tsi-ethernet", i++, &r[0],
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1);
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if (IS_ERR(tsi_eth_dev)) {
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ret = PTR_ERR(tsi_eth_dev);
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goto err;
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}
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mac_addr = of_get_mac_address(np);
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if (mac_addr)
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memcpy(tsi_eth_data.mac_addr, mac_addr, 6);
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ph = of_get_property(np, "mdio-handle", NULL);
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mdio = of_find_node_by_phandle(*ph);
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ret = of_address_to_resource(mdio, 0, &res);
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of_node_put(mdio);
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if (ret)
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goto unreg;
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ph = of_get_property(np, "phy-handle", NULL);
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phy = of_find_node_by_phandle(*ph);
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if (phy == NULL) {
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ret = -ENODEV;
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goto unreg;
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}
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phy_id = of_get_property(phy, "reg", NULL);
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tsi_eth_data.regs = r[0].start;
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tsi_eth_data.phyregs = res.start;
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tsi_eth_data.phy = *phy_id;
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tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
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/* Some boards with the TSI108 bridge (e.g. Holly)
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* have a miswiring of the ethernet PHYs which
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* requires a workaround. The special
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* "txc-rxc-delay-disable" property enables this
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* workaround. FIXME: Need to port the tsi108_eth
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* driver itself to phylib and use a non-misleading
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* name for the workaround flag - it's not actually to
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* do with the model of PHY in use */
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if (of_get_property(phy, "txc-rxc-delay-disable", NULL))
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tsi_eth_data.phy_type = TSI108_PHY_BCM54XX;
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of_node_put(phy);
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ret =
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platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
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sizeof(hw_info));
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if (ret)
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goto unreg;
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}
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return 0;
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unreg:
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platform_device_unregister(tsi_eth_dev);
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err:
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of_node_put(np);
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return ret;
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}
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arch_initcall(tsi108_eth_of_init);
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