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/*
* 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;
}
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