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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-11-26 GuEe-GUI first version
*/
#include <rtthread.h>
#include <drivers/phy.h>
#define DBG_TAG "rtdm.phy.rtl"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define RTL8211F_PHY_ID 0x001cc916
#define RTL8211FVD_PHY_ID 0x001cc878
#define RTL8211F_PHY_ID_MASK 0x001fffff
#define RTL8211F_PAGE_SELECT 0x1f
#define RTL8211F_PHYCR_PAGE 0x0a43
#define RTL8211F_PHYCR1 0x18
#define RTL8211F_PHYCR2 0x19
#define RTL8211F_RGMII_PAGE 0x0d08
#define RTL8211F_TXCR 0x11
#define RTL8211F_RXCR 0x15
#define RTL8211F_TX_DELAY RT_BIT(8)
#define RTL8211F_RX_DELAY RT_BIT(3)
#define RTL8211F_ALDPS_PLL_OFF RT_BIT(1)
#define RTL8211F_ALDPS_ENABLE RT_BIT(2)
#define RTL8211F_ALDPS_XTAL_OFF RT_BIT(12)
#define RTL8211F_CLKOUT_EN RT_BIT(0)
struct rtl821x_priv
{
rt_uint16_t phycr1;
rt_uint16_t phycr2;
rt_bool_t has_phycr2;
};
static int rtl8211f_read_page(struct rt_phy_device *phydev)
{
return rt_phy_read(phydev, RT_MDIO_DEVAD_NONE, RTL8211F_PAGE_SELECT);
}
static int rtl8211f_write_page(struct rt_phy_device *phydev, int page)
{
return rt_phy_write(phydev, RT_MDIO_DEVAD_NONE, RTL8211F_PAGE_SELECT, page);
}
static int rtl8211f_read_paged(struct rt_phy_device *phydev, int page, int reg)
{
int oldpage, val;
oldpage = rtl8211f_read_page(phydev);
if (oldpage < 0)
return oldpage;
val = rtl8211f_write_page(phydev, page);
if (val < 0)
return val;
val = rt_phy_read(phydev, RT_MDIO_DEVAD_NONE, reg);
rtl8211f_write_page(phydev, oldpage);
return val;
}
static int rtl8211f_modify_paged(struct rt_phy_device *phydev, int page,
int reg, rt_uint16_t mask, rt_uint16_t set)
{
int oldpage, val, ret;
oldpage = rtl8211f_read_page(phydev);
if (oldpage < 0)
return oldpage;
ret = rtl8211f_write_page(phydev, page);
if (ret < 0)
return ret;
val = rt_phy_read(phydev, RT_MDIO_DEVAD_NONE, reg);
if (val < 0)
{
rtl8211f_write_page(phydev, oldpage);
return val;
}
val &= ~mask;
val |= set & mask;
ret = rt_phy_write(phydev, RT_MDIO_DEVAD_NONE, reg, val);
rtl8211f_write_page(phydev, oldpage);
return ret;
}
static int rtl8211f_config_delay(struct rt_phy_device *phydev)
{
rt_uint16_t tx_delay = 0;
rt_uint16_t rx_delay = 0;
int ret;
switch (phydev->interface)
{
case RT_PHY_INTERFACE_MODE_RGMII:
break;
case RT_PHY_INTERFACE_MODE_RGMII_RXID:
rx_delay = RTL8211F_RX_DELAY;
break;
case RT_PHY_INTERFACE_MODE_RGMII_TXID:
tx_delay = RTL8211F_TX_DELAY;
break;
case RT_PHY_INTERFACE_MODE_RGMII_ID:
tx_delay = RTL8211F_TX_DELAY;
rx_delay = RTL8211F_RX_DELAY;
break;
default:
return 0;
}
ret = rtl8211f_modify_paged(phydev, RTL8211F_RGMII_PAGE, RTL8211F_TXCR,
RTL8211F_TX_DELAY, tx_delay);
if (ret < 0)
return ret;
return rtl8211f_modify_paged(phydev, RTL8211F_RGMII_PAGE, RTL8211F_RXCR,
RTL8211F_RX_DELAY, rx_delay);
}
static rt_bool_t rtl8211f_ofw_bool(struct rt_phy_device *phydev,
const char *propname)
{
#ifdef RT_USING_OFW
if (phydev->node)
return rt_ofw_prop_read_bool(phydev->node, propname);
#else
RT_UNUSED(phydev);
RT_UNUSED(propname);
#endif
return RT_FALSE;
}
static int rtl8211f_probe(struct rt_phy_device *phydev)
{
struct rtl821x_priv *priv;
int val;
priv = rt_calloc(1, sizeof(*priv));
if (!priv)
return -RT_ENOMEM;
val = rtl8211f_read_paged(phydev, RTL8211F_PHYCR_PAGE, RTL8211F_PHYCR1);
if (val < 0)
{
rt_free(priv);
return val;
}
priv->phycr1 = val & (RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE |
RTL8211F_ALDPS_XTAL_OFF);
if (rtl8211f_ofw_bool(phydev, "realtek,aldps-enable"))
{
priv->phycr1 |= RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE |
RTL8211F_ALDPS_XTAL_OFF;
}
priv->has_phycr2 = phydev->phy_id != RTL8211FVD_PHY_ID;
if (priv->has_phycr2)
{
val = rtl8211f_read_paged(phydev, RTL8211F_PHYCR_PAGE, RTL8211F_PHYCR2);
if (val < 0)
{
rt_free(priv);
return val;
}
priv->phycr2 = val & RTL8211F_CLKOUT_EN;
if (rtl8211f_ofw_bool(phydev, "realtek,clkout-disable"))
priv->phycr2 &= ~RTL8211F_CLKOUT_EN;
}
phydev->priv = priv;
return 0;
}
static int rtl8211f_config_init(struct rt_phy_device *phydev)
{
struct rtl821x_priv *priv = phydev->priv;
int ret;
if (!priv)
return -RT_EINVAL;
ret = rtl8211f_modify_paged(phydev, RTL8211F_PHYCR_PAGE, RTL8211F_PHYCR1,
RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE |
RTL8211F_ALDPS_XTAL_OFF, priv->phycr1);
if (ret < 0)
return ret;
ret = rtl8211f_config_delay(phydev);
if (ret < 0)
return ret;
if (priv->has_phycr2)
{
ret = rtl8211f_modify_paged(phydev, RTL8211F_PHYCR_PAGE,
RTL8211F_PHYCR2, RTL8211F_CLKOUT_EN, priv->phycr2);
if (ret < 0)
return ret;
return rt_phy_reset(phydev);
}
return 0;
}
static int rtl8211f_config(struct rt_phy_device *phydev)
{
int ret;
ret = rtl8211f_config_init(phydev);
if (ret < 0)
return ret;
return rt_genphy_config(phydev);
}
static int rtl8211f_startup(struct rt_phy_device *phydev)
{
int ret;
ret = rt_genphy_startup(phydev);
if (ret < 0 || !phydev->link)
{
if (ret < 0)
return ret;
return -ETIMEDOUT;
}
return 0;
}
static int rtl8211f_shutdown(struct rt_phy_device *phydev)
{
if (phydev->priv)
{
rt_free(phydev->priv);
phydev->priv = RT_NULL;
}
return 0;
}
static struct rt_phy_driver rtl8211f_driver =
{
.uid = RTL8211F_PHY_ID,
.mask = RTL8211F_PHY_ID_MASK,
.name = "RTL8211F",
.features = RT_PHY_GBIT_FEATURES,
.probe = rtl8211f_probe,
.config = rtl8211f_config,
.startup = rtl8211f_startup,
.shutdown = rtl8211f_shutdown,
};
RT_PHY_DRIVER_REGISTER(rtl8211f_driver);
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