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// SPDX-License-Identifier: GPL-2.0+
#include <linux/bitfield.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pinctrl/consumer.h>
#include <linux/phy.h>
#define MEDAITEK_2P5GE_PHY_DMB_FW "mediatek/mediatek-2p5ge-phy-dmb.bin"
#define MEDIATEK_2P5GE_PHY_PMB_FW "mediatek/mediatek-2p5ge-phy-pmb.bin"
#define MD32_EN_CFG 0x18
#define MD32_EN BIT(0)
#define BASE100T_STATUS_EXTEND 0x10
#define BASE1000T_STATUS_EXTEND 0x11
#define EXTEND_CTRL_AND_STATUS 0x16
#define PHY_AUX_CTRL_STATUS 0x1d
#define PHY_AUX_DPX_MASK GENMASK(5, 5)
#define PHY_AUX_SPEED_MASK GENMASK(4, 2)
/* Registers on MDIO_MMD_VEND1 */
#define MTK_PHY_LINK_STATUS_MISC 0xa2
#define MTK_PHY_FDX_ENABLE BIT(5)
/* Registers on MDIO_MMD_VEND2 */
#define MTK_PHY_LED0_ON_CTRL 0x24
#define MTK_PHY_LED0_ON_LINK1000 BIT(0)
#define MTK_PHY_LED0_ON_LINK100 BIT(1)
#define MTK_PHY_LED0_ON_LINK10 BIT(2)
#define MTK_PHY_LED0_ON_LINK2500 BIT(7)
#define MTK_PHY_LED0_POLARITY BIT(14)
#define MTK_PHY_LED1_ON_CTRL 0x26
#define MTK_PHY_LED1_ON_FDX BIT(4)
#define MTK_PHY_LED1_ON_HDX BIT(5)
#define MTK_PHY_LED1_POLARITY BIT(14)
enum {
PHY_AUX_SPD_10 = 0,
PHY_AUX_SPD_100,
PHY_AUX_SPD_1000,
PHY_AUX_SPD_2500,
};
static int mt798x_2p5ge_phy_config_init(struct phy_device *phydev)
{
int ret;
int i;
const struct firmware *fw;
struct device *dev = &phydev->mdio.dev;
struct device_node *np;
void __iomem *dmb_addr;
void __iomem *pmb_addr;
void __iomem *mcucsr_base;
u16 reg;
struct pinctrl *pinctrl;
np = of_find_compatible_node(NULL, NULL, "mediatek,2p5gphy-fw");
if (!np)
return -ENOENT;
dmb_addr = of_iomap(np, 0);
if (!dmb_addr)
return -ENOMEM;
pmb_addr = of_iomap(np, 1);
if (!pmb_addr)
return -ENOMEM;
mcucsr_base = of_iomap(np, 2);
if (!mcucsr_base)
return -ENOMEM;
ret = request_firmware(&fw, MEDAITEK_2P5GE_PHY_DMB_FW, dev);
if (ret) {
dev_err(dev, "failed to load firmware: %s, ret: %d\n",
MEDAITEK_2P5GE_PHY_DMB_FW, ret);
return ret;
}
for (i = 0; i < fw->size - 1; i += 4)
writel(*((uint32_t *)(fw->data + i)), dmb_addr + i);
release_firmware(fw);
ret = request_firmware(&fw, MEDIATEK_2P5GE_PHY_PMB_FW, dev);
if (ret) {
dev_err(dev, "failed to load firmware: %s, ret: %d\n",
MEDIATEK_2P5GE_PHY_PMB_FW, ret);
return ret;
}
for (i = 0; i < fw->size - 1; i += 4)
writel(*((uint32_t *)(fw->data + i)), pmb_addr + i);
release_firmware(fw);
reg = readw(mcucsr_base + MD32_EN_CFG);
writew(reg | MD32_EN, mcucsr_base + MD32_EN_CFG);
dev_dbg(dev, "Firmware loading/trigger ok.\n");
/* Setup LED */
phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED0_ON_CTRL,
MTK_PHY_LED0_POLARITY);
phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED0_ON_CTRL,
MTK_PHY_LED0_ON_LINK10 |
MTK_PHY_LED0_ON_LINK100 |
MTK_PHY_LED0_ON_LINK1000 |
MTK_PHY_LED0_ON_LINK2500);
phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED1_ON_CTRL,
MTK_PHY_LED1_ON_FDX | MTK_PHY_LED1_ON_HDX);
pinctrl = devm_pinctrl_get_select(&phydev->mdio.dev, "i2p5gbe-led");
if (IS_ERR(pinctrl)) {
dev_err(&phydev->mdio.dev, "Fail to set LED pins!\n");
return PTR_ERR(pinctrl);
}
return 0;
}
static int mt798x_2p5ge_phy_config_aneg(struct phy_device *phydev)
{
bool changed = false;
u32 adv;
int ret;
if (phydev->autoneg == AUTONEG_DISABLE) {
/* Configure half duplex with genphy_setup_forced,
* because genphy_c45_pma_setup_forced does not support.
*/
return phydev->duplex != DUPLEX_FULL
? genphy_setup_forced(phydev)
: genphy_c45_pma_setup_forced(phydev);
}
ret = genphy_c45_an_config_aneg(phydev);
if (ret < 0)
return ret;
if (ret > 0)
changed = true;
adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
ret = phy_modify_changed(phydev, MII_CTRL1000,
ADVERTISE_1000FULL | ADVERTISE_1000HALF,
adv);
if (ret < 0)
return ret;
if (ret > 0)
changed = true;
return genphy_c45_check_and_restart_aneg(phydev, changed);
}
static int mt798x_2p5ge_phy_get_features(struct phy_device *phydev)
{
int ret;
ret = genphy_read_abilities(phydev);
if (ret)
return ret;
/* We don't support HDX at MAC layer on mt798x.
* So mask phy's HDX capabilities, too.
*/
linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
phydev->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
phydev->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
phydev->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
phydev->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);
return 0;
}
static int mt798x_2p5ge_phy_read_status(struct phy_device *phydev)
{
int ret;
ret = genphy_update_link(phydev);
if (ret)
return ret;
phydev->speed = SPEED_UNKNOWN;
phydev->duplex = DUPLEX_UNKNOWN;
phydev->pause = 0;
phydev->asym_pause = 0;
if (!phydev->link)
return 0;
if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) {
ret = genphy_c45_read_lpa(phydev);
if (ret < 0)
return ret;
/* Read the link partner's 1G advertisement */
ret = phy_read(phydev, MII_STAT1000);
if (ret < 0)
return ret;
mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, ret);
} else if (phydev->autoneg == AUTONEG_DISABLE) {
linkmode_zero(phydev->lp_advertising);
}
ret = phy_read(phydev, PHY_AUX_CTRL_STATUS);
if (ret < 0)
return ret;
switch (FIELD_GET(PHY_AUX_SPEED_MASK, ret)) {
case PHY_AUX_SPD_10:
phydev->speed = SPEED_10;
break;
case PHY_AUX_SPD_100:
phydev->speed = SPEED_100;
break;
case PHY_AUX_SPD_1000:
phydev->speed = SPEED_1000;
break;
case PHY_AUX_SPD_2500:
phydev->speed = SPEED_2500;
phydev->duplex = DUPLEX_FULL; /* 2.5G must be FDX */
break;
}
ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_LINK_STATUS_MISC);
if (ret < 0)
return ret;
phydev->duplex = (ret & MTK_PHY_FDX_ENABLE) ? DUPLEX_FULL : DUPLEX_HALF;
return 0;
}
static struct phy_driver mtk_gephy_driver[] = {
{
PHY_ID_MATCH_EXACT(0x00339c11),
.name = "MediaTek MT798x 2.5GbE PHY",
.config_init = mt798x_2p5ge_phy_config_init,
.config_aneg = mt798x_2p5ge_phy_config_aneg,
.get_features = mt798x_2p5ge_phy_get_features,
.read_status = mt798x_2p5ge_phy_read_status,
},
};
module_phy_driver(mtk_gephy_driver);
static struct mdio_device_id __maybe_unused mtk_2p5ge_phy_tbl[] = {
{ PHY_ID_MATCH_VENDOR(0x00339c00) },
{ }
};
MODULE_DESCRIPTION("MediaTek 2.5Gb Ethernet PHY driver");
MODULE_AUTHOR("SkyLake Huang <SkyLake.Huang@mediatek.com>");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(mdio, mtk_2p5ge_phy_tbl);
MODULE_FIRMWARE(MEDAITEK_2P5GE_PHY_DMB_FW);
MODULE_FIRMWARE(MEDIATEK_2P5GE_PHY_PMB_FW);
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