/* * smsc9303.c - routines to initialize SMSC 9303 switch * * Copyright (c) 2010 BCT Electronic GmbH * * Licensed under the GPL-2 or later. */ #include <common.h> #include <config.h> #include <miiphy.h> #include <asm/blackfin.h> #include <asm/gpio.h> static int smc9303i_write_mii(unsigned char addr, unsigned char reg, unsigned short data) { const char *devname = miiphy_get_current_dev(); if (!devname) return 0; if (miiphy_write(devname, addr, reg, data) != 0) return 0; return 1; } static int smc9303i_write_reg(unsigned short reg, unsigned int data) { const char *devname = miiphy_get_current_dev(); unsigned char mii_addr = 0x10 | (reg >> 6); unsigned char mii_reg = (reg & 0x3c) >> 1; if (!devname) return 0; if (miiphy_write(devname, mii_addr, mii_reg|0, data & 0xffff) != 0) return 0; if (miiphy_write(devname, mii_addr, mii_reg|1, data >> 16) != 0) return 0; return 1; } static int smc9303i_read_reg(unsigned short reg, unsigned int *data) { const char *devname = miiphy_get_current_dev(); unsigned char mii_addr = 0x10 | (reg >> 6); unsigned char mii_reg = (reg & 0x3c) >> 1; unsigned short tmp1, tmp2; if (!devname) return 0; if (miiphy_read(devname, mii_addr, mii_reg|0, &tmp1) != 0) return 0; if (miiphy_read(devname, mii_addr, mii_reg|1, &tmp2) != 0) return 0; *data = (tmp2 << 16) | tmp1; return 1; } #if 0 static int smc9303i_read_mii(unsigned char addr, unsigned char reg, unsigned short *data) { const char *devname = miiphy_get_current_dev(); if (!devname) return 0; if (miiphy_read(devname, addr, reg, data) != 0) return 0; return 1; } #endif typedef struct { unsigned short reg; unsigned int value; } smsc9303i_config_entry1_t; static const smsc9303i_config_entry1_t smsc9303i_config_table1[] = { {0x1a0, 0x00000006}, /* Port 1 Manual Flow Control Register */ {0x1a4, 0x00000006}, /* Port 2 Manual Flow Control Register */ {0x1a8, 0x00000006}, /* Port 0 Manual Flow Control Register */ }; typedef struct { unsigned char addr; unsigned char reg; unsigned short value; } smsc9303i_config_entry2_t; static const smsc9303i_config_entry2_t smsc9303i_config_table2[] = { {0x01, 0x00, 0x0100}, /* Port0 PHY Basic Control Register */ {0x02, 0x00, 0x1100}, /* Port1 PHY Basic Control Register */ {0x03, 0x00, 0x1100}, /* Port2 PHY Basic Control Register */ {0x01, 0x04, 0x0001}, /* Port0 PHY Auto-Negotiation Advertisement Register */ {0x02, 0x04, 0x2de1}, /* Port1 PHY Auto-Negotiation Advertisement Register */ {0x03, 0x04, 0x2de1}, /* Port2 PHY Auto-Negotiation Advertisement Register */ {0x01, 0x11, 0x0000}, /* Port0 PHY Mode Control/Status Register */ {0x02, 0x11, 0x0000}, /* Port1 PHY Mode Control/Status Register */ {0x03, 0x11, 0x0000}, /* Port2 PHY Mode Control/Status Register */ {0x01, 0x12, 0x0021}, /* Port0 PHY Special Modes Register */ {0x02, 0x12, 0x00e2}, /* Port1 PHY Special Modes Register */ {0x03, 0x12, 0x00e3}, /* Port2 PHY Special Modes Register */ {0x01, 0x1b, 0x0000}, /* Port0 PHY Special Control/Status Indication Register */ {0x02, 0x1b, 0x0000}, /* Port1 PHY Special Control/Status Indication Register */ {0x03, 0x1b, 0x0000}, /* Port2 PHY Special Control/Status Indication Register */ {0x01, 0x1e, 0x0000}, /* Port0 PHY Interrupt Source Flags Register */ {0x02, 0x1e, 0x0000}, /* Port1 PHY Interrupt Source Flags Register */ {0x03, 0x1e, 0x0000}, /* Port2 PHY Interrupt Source Flags Register */ }; int init_smsc9303i_mii(void) { unsigned int data; unsigned int i; printf(" reset SMSC LAN9303i\n"); gpio_request(GPIO_PG10, "smsc9303"); gpio_direction_output(GPIO_PG10, 0); udelay(10000); gpio_direction_output(GPIO_PG10, 1); udelay(10000); gpio_free(GPIO_PG10); #if defined(CONFIG_MII_INIT) mii_init(); #endif printf(" write SMSC LAN9303i configuration\n"); if (!smc9303i_read_reg(0x50, &data)) return 0; if ((data >> 16) != 0x9303) { /* chip id not found */ printf(" error identifying SMSC LAN9303i\n"); return 0; } for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table1); i++) { const smsc9303i_config_entry1_t *entry = &smsc9303i_config_table1[i]; if (!smc9303i_write_reg(entry->reg, entry->value)) { printf(" error writing SMSC LAN9303i configuration\n"); return 0; } } for (i = 0; i < ARRAY_SIZE(smsc9303i_config_table2); i++) { const smsc9303i_config_entry2_t *entry = &smsc9303i_config_table2[i]; if (!smc9303i_write_mii(entry->addr, entry->reg, entry->value)) { printf(" error writing SMSC LAN9303i configuration\n"); return 0; } } return 1; }