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153 lines
3.5 KiB
153 lines
3.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* tsi108/109 device setup code |
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* |
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* Maintained by Roy Zang < [email protected] > |
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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/etherdevice.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 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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of_get_mac_address(np, tsi_eth_data.mac_addr); |
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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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