/**
* Initialize the LAN8720 PHY.
*
* This function initialises the LAN8720 PHY. It will block until complete. This
* function is called as part of the EMAC driver Initialisation. Configuration
* of the PHY at startup is controlled by setting up configuration defines in
* lpc_emac_config.h.
*
* \param [in] netif NETIF structure
* \return ERR_OK if the setup was successful, otherwise ERR_TIMEOUT
*/
err_t lpc_phy_init(struct netif *netif) {
u32_t tmp = 2, tmp1;
s32_t i;
/**
* Set these to 2 so there will always be a change and lpc_update_phy_sts does
* something the first time its called
*/
olddphysts.phy_speed_100mbs = tmp;
olddphysts.phy_full_duplex = tmp;
olddphysts.phy_link_active = tmp;
phyustate = 0;
/* Only first read and write are checked for failure */
/* Put the LAN8720 in reset mode and wait for completion */
if (lpc_mii_write(LAN8_BCR_REG, LAN8_RESET) != 0)
return ERR_TIMEOUT;
i = 400;
while (i > 0) {
msDelay(1); /* 1 ms */
if (lpc_mii_read(LAN8_BCR_REG, &tmp) != 0)
return ERR_TIMEOUT;
if (!(tmp & (LAN8_RESET | LAN8_POWER_DOWN)))
i = -1;
else
i--;
}
/* Timeout? */
if (i == 0)
return ERR_TIMEOUT;
/* Setup link based on configuration options */
#if PHY_USE_AUTONEG==1
tmp = LAN8_AUTONEG;
#else
tmp = 0;
#endif
#if PHY_USE_100MBS==1
tmp |= LAN8_SPEED_SELECT;
#endif
#if PHY_USE_FULL_DUPLEX==1
tmp |= LAN8_DUPLEX_MODE;
#endif
lpc_mii_write(LAN8_BCR_REG, tmp);
/**
* No point in waiting around for the link to go active if the cable is
* unplugged, so set the current link status and exit.
*/
lpc_mii_read(LAN8_BSR_REG, &tmp);
lpc_mii_read(LAN8_PHYSPLCTL_REG, &tmp1);
lpc_update_phy_sts(netif, tmp, tmp1);
return ERR_OK;
}
/** \brief Initialize the DP83848 PHY.
*
* This function initializes the DP83848 PHY. It will block until
* complete. This function is called as part of the EMAC driver
* initialization. Configuration of the PHY at startup is
* controlled by setting up configuration defines in lpc_phy.h.
*
* \param[in] netif NETIF structure
* \param[in] rmii If set, configures the PHY for RMII mode
* \return ERR_OK if the setup was successful, otherwise ERR_TIMEOUT
*/
err_t lpc_phy_init(struct netif *netif, int rmii)
{
u32_t tmp;
s32_t i;
physts.phy_speed_100mbs = olddphysts.phy_speed_100mbs = 2;
physts.phy_full_duplex = olddphysts.phy_full_duplex = 2;
physts.phy_link_active = olddphysts.phy_link_active = 2;
phyustate = 0;
/* Only first read and write are checked for failure */
/* Put the DP83848C in reset mode and wait for completion */
if (lpc_mii_write(DP8_BMCR_REG, DP8_RESET) != 0)
return ERR_TIMEOUT;
i = 400;
while (i > 0) {
osDelay(1); /* 1 ms */
if (lpc_mii_read(DP8_BMCR_REG, &tmp) != 0)
return ERR_TIMEOUT;
if (!(tmp & (DP8_RESET | DP8_POWER_DOWN)))
i = -1;
else
i--;
}
/* Timeout? */
if (i == 0)
return ERR_TIMEOUT;
/* Setup link based on configuration options */
#if PHY_USE_AUTONEG==1
tmp = DP8_AUTONEG;
#else
tmp = 0;
#endif
#if PHY_USE_100MBS==1
tmp |= DP8_SPEED_SELECT;
#endif
#if PHY_USE_FULL_DUPLEX==1
tmp |= DP8_DUPLEX_MODE;
#endif
lpc_mii_write(DP8_BMCR_REG, tmp);
/* Enable RMII mode for PHY */
if (rmii)
lpc_mii_write(DP8_PHY_RBR_REG, DP8_RBR_RMII_MODE);
/* The link is not set active at this point, but will be detected
later */
return ERR_OK;
}
/* Initialize the SMSC 87x0 PHY */
uint32_t lpc_phy_init(bool rmii, p_msDelay_func_t pDelayMsFunc)
{
uint16_t tmp;
int32_t i;
pDelayMs = pDelayMsFunc;
/* Initial states for PHY status and state machine */
olddphysts = physts = phyustate = 0;
/* Only first read and write are checked for failure */
/* Put the DP83848C in reset mode and wait for completion */
if (lpc_mii_write(LAN8_BCR_REG, LAN8_RESET) != SUCCESS) {
return ERROR;
}
i = 400;
while (i > 0) {
pDelayMs(1);
if (lpc_mii_read(LAN8_BCR_REG, &tmp) != SUCCESS) {
return ERROR;
}
if (!(tmp & (LAN8_RESET | LAN8_POWER_DOWN))) {
i = -1;
}
else {
i--;
}
}
/* Timeout? */
if (i == 0) {
return ERROR;
}
/* Setup link */
lpc_mii_write(LAN8_BCR_REG, LAN8_SPEED_SELECT | LAN8_AUTONEG | LAN8_RESTART_AUTONEG);
/* The link is not set active at this point, but will be detected
later */
return SUCCESS;
}
/* Initialize the DP83848 PHY */
uint32_t lpc_phy_init(bool rmii, p_msDelay_func_t pDelayMsFunc)
{
uint16_t tmp;
int32_t i;
pDelayMs = pDelayMsFunc;
/* Initial states for PHY status and state machine */
olddphysts = physts = phyustate = 0;
/* Only first read and write are checked for failure */
/* Put the DP83848C in reset mode and wait for completion */
if (lpc_mii_write(DP8_BMCR_REG, DP8_RESET) != SUCCESS) {
return ERROR;
}
i = 400;
while (i > 0) {
pDelayMs(1);
if (lpc_mii_read(DP8_BMCR_REG, &tmp) != SUCCESS) {
return ERROR;
}
if (!(tmp & (DP8_RESET | DP8_POWER_DOWN))) {
i = -1;
}
else {
i--;
}
}
/* Timeout? */
if (i == 0) {
return ERROR;
}
#if 0
/* Setup link based on configuration options */
#if PHY_USE_AUTONEG == 1
tmp = DP8_AUTONEG;
#else
tmp = 0;
#endif
#if PHY_USE_100MBS == 1
tmp |= DP8_SPEED_SELECT;
#endif
#if PHY_USE_FULL_DUPLEX == 1
tmp |= DP8_DUPLEX_MODE;
#endif
#else
tmp = DP8_AUTONEG;
#endif
lpc_mii_write(DP8_BMCR_REG, tmp);
/* Enable RMII mode for PHY */
if (rmii) {
lpc_mii_write(DP8_PHY_RBR_REG, DP8_RBR_RMII_MODE);
}
/* The link is not set active at this point, but will be detected
later */
return SUCCESS;
}