diff options
Diffstat (limited to 'kernel/arch/powerpc/sysdev/tsi108_dev.c')
| -rw-r--r-- | kernel/arch/powerpc/sysdev/tsi108_dev.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/sysdev/tsi108_dev.c b/kernel/arch/powerpc/sysdev/tsi108_dev.c new file mode 100644 index 000000000..1fd0717ad --- /dev/null +++ b/kernel/arch/powerpc/sysdev/tsi108_dev.c @@ -0,0 +1,159 @@ +/* + * tsi108/109 device setup code + * + * Maintained by Roy Zang < tie-fei.zang@freescale.com > + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/major.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/export.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/of_net.h> +#include <asm/tsi108.h> + +#include <linux/atomic.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/prom.h> +#include <mm/mmu_decl.h> + +#undef DEBUG + +#ifdef DEBUG +#define DBG(fmt...) do { printk(fmt); } while(0) +#else +#define DBG(fmt...) do { } while(0) +#endif + +static phys_addr_t tsi108_csr_base = -1; + +phys_addr_t get_csrbase(void) +{ + struct device_node *tsi; + + if (tsi108_csr_base != -1) + return tsi108_csr_base; + + tsi = of_find_node_by_type(NULL, "tsi-bridge"); + if (tsi) { + unsigned int size; + const void *prop = of_get_property(tsi, "reg", &size); + tsi108_csr_base = of_translate_address(tsi, prop); + of_node_put(tsi); + }; + return tsi108_csr_base; +} + +u32 get_vir_csrbase(void) +{ + return (u32) (ioremap(get_csrbase(), 0x10000)); +} + +EXPORT_SYMBOL(get_csrbase); +EXPORT_SYMBOL(get_vir_csrbase); + +static int __init tsi108_eth_of_init(void) +{ + struct device_node *np; + unsigned int i = 0; + struct platform_device *tsi_eth_dev; + struct resource res; + int ret; + + for_each_compatible_node(np, "network", "tsi108-ethernet") { + struct resource r[2]; + struct device_node *phy, *mdio; + hw_info tsi_eth_data; + const unsigned int *phy_id; + const void *mac_addr; + const phandle *ph; + + memset(r, 0, sizeof(r)); + memset(&tsi_eth_data, 0, sizeof(tsi_eth_data)); + + ret = of_address_to_resource(np, 0, &r[0]); + DBG("%s: name:start->end = %s:%pR\n", + __func__, r[0].name, &r[0]); + if (ret) + goto err; + + r[1].name = "tx"; + r[1].start = irq_of_parse_and_map(np, 0); + r[1].end = irq_of_parse_and_map(np, 0); + r[1].flags = IORESOURCE_IRQ; + DBG("%s: name:start->end = %s:%pR\n", + __func__, r[1].name, &r[1]); + + tsi_eth_dev = + platform_device_register_simple("tsi-ethernet", i++, &r[0], + 1); + + if (IS_ERR(tsi_eth_dev)) { + ret = PTR_ERR(tsi_eth_dev); + goto err; + } + + mac_addr = of_get_mac_address(np); + if (mac_addr) + memcpy(tsi_eth_data.mac_addr, mac_addr, 6); + + ph = of_get_property(np, "mdio-handle", NULL); + mdio = of_find_node_by_phandle(*ph); + ret = of_address_to_resource(mdio, 0, &res); + of_node_put(mdio); + if (ret) + goto unreg; + + ph = of_get_property(np, "phy-handle", NULL); + phy = of_find_node_by_phandle(*ph); + + if (phy == NULL) { + ret = -ENODEV; + goto unreg; + } + + phy_id = of_get_property(phy, "reg", NULL); + + tsi_eth_data.regs = r[0].start; + tsi_eth_data.phyregs = res.start; + tsi_eth_data.phy = *phy_id; + tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0); + + /* Some boards with the TSI108 bridge (e.g. Holly) + * have a miswiring of the ethernet PHYs which + * requires a workaround. The special + * "txc-rxc-delay-disable" property enables this + * workaround. FIXME: Need to port the tsi108_eth + * driver itself to phylib and use a non-misleading + * name for the workaround flag - it's not actually to + * do with the model of PHY in use */ + if (of_get_property(phy, "txc-rxc-delay-disable", NULL)) + tsi_eth_data.phy_type = TSI108_PHY_BCM54XX; + of_node_put(phy); + + ret = + platform_device_add_data(tsi_eth_dev, &tsi_eth_data, + sizeof(hw_info)); + if (ret) + goto unreg; + } + return 0; +unreg: + platform_device_unregister(tsi_eth_dev); +err: + of_node_put(np); + return ret; +} + +arch_initcall(tsi108_eth_of_init); |