developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | #include <linux/bitfield.h> |
| 3 | #include <linux/firmware.h> |
| 4 | #include <linux/module.h> |
| 5 | #include <linux/nvmem-consumer.h> |
| 6 | #include <linux/of_address.h> |
| 7 | #include <linux/of_platform.h> |
| 8 | #include <linux/phy.h> |
| 9 | |
| 10 | #define MEDAITEK_2P5GE_PHY_DMB_FW "mediatek-2p5ge-phy-dmb.bin" |
| 11 | #define MEDIATEK_2P5GE_PHY_PMB_FW "mediatek-2p5ge-phy-pmb.bin" |
| 12 | |
| 13 | #define MD32_EN_CFG 0x18 |
| 14 | #define MD32_EN BIT(0) |
| 15 | |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 16 | #define BASE100T_STATUS_EXTEND (0x10) |
| 17 | #define BASE1000T_STATUS_EXTEND (0x11) |
| 18 | #define EXTEND_CTRL_AND_STATUS (0x16) |
| 19 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 20 | #define PHY_AUX_CTRL_STATUS (0x1d) |
| 21 | #define PHY_AUX_DPX_MASK GENMASK(5, 5) |
| 22 | #define PHY_AUX_SPEED_MASK GENMASK(4, 2) |
| 23 | |
| 24 | enum { |
| 25 | PHY_AUX_SPD_10 = 0, |
| 26 | PHY_AUX_SPD_100, |
| 27 | PHY_AUX_SPD_1000, |
| 28 | PHY_AUX_SPD_2500, |
| 29 | }; |
| 30 | |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 31 | static int mt798x_2p5ge_phy_config_init(struct phy_device *phydev) |
| 32 | { |
| 33 | int ret; |
| 34 | int i; |
| 35 | const struct firmware *fw; |
| 36 | struct device *dev = &phydev->mdio.dev; |
| 37 | struct device_node *np; |
| 38 | void __iomem *dmb_addr; |
| 39 | void __iomem *pmb_addr; |
| 40 | void __iomem *mcucsr_base; |
| 41 | u16 reg; |
| 42 | |
| 43 | np = of_find_compatible_node(NULL, NULL, "mediatek,2p5gphy-fw"); |
| 44 | if (!np) |
| 45 | return -ENOENT; |
| 46 | |
| 47 | dmb_addr = of_iomap(np, 0); |
| 48 | if (!dmb_addr) |
| 49 | return -ENOMEM; |
| 50 | pmb_addr = of_iomap(np, 1); |
| 51 | if (!pmb_addr) |
| 52 | return -ENOMEM; |
| 53 | mcucsr_base = of_iomap(np, 2); |
| 54 | if (!mcucsr_base) |
| 55 | return -ENOMEM; |
| 56 | |
| 57 | ret = request_firmware(&fw, MEDAITEK_2P5GE_PHY_DMB_FW, dev); |
| 58 | if (ret) { |
| 59 | dev_err(dev, "failed to load firmware: %s, ret: %d\n", |
| 60 | MEDAITEK_2P5GE_PHY_DMB_FW, ret); |
| 61 | return ret; |
| 62 | } |
| 63 | for (i = 0; i < fw->size - 1; i += 4) |
| 64 | writel(*((uint32_t *)(fw->data + i)), dmb_addr + i); |
| 65 | release_firmware(fw); |
| 66 | |
| 67 | ret = request_firmware(&fw, MEDIATEK_2P5GE_PHY_PMB_FW, dev); |
| 68 | if (ret) { |
| 69 | dev_err(dev, "failed to load firmware: %s, ret: %d\n", |
| 70 | MEDIATEK_2P5GE_PHY_PMB_FW, ret); |
| 71 | return ret; |
| 72 | } |
| 73 | for (i = 0; i < fw->size - 1; i += 4) |
| 74 | writel(*((uint32_t *)(fw->data + i)), pmb_addr + i); |
| 75 | release_firmware(fw); |
| 76 | |
| 77 | reg = readw(mcucsr_base + MD32_EN_CFG); |
| 78 | writew(reg | MD32_EN, mcucsr_base + MD32_EN_CFG); |
| 79 | dev_info(dev, "Firmware loading/trigger ok.\n"); |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static int mt798x_2p5ge_phy_get_features(struct phy_device *phydev) |
| 85 | { |
| 86 | int ret; |
| 87 | |
| 88 | ret = genphy_read_abilities(phydev); |
| 89 | if (ret) |
| 90 | return ret; |
| 91 | |
developer | d4abc8c | 2022-10-28 10:45:36 +0800 | [diff] [blame] | 92 | /* We don't support HDX at MAC layer on mt798x. |
| 93 | * So mask phy's HDX capabilities, too. |
| 94 | */ |
| 95 | linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 96 | phydev->supported); |
| 97 | linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, |
| 98 | phydev->supported); |
| 99 | linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, |
| 100 | phydev->supported); |
| 101 | linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, |
| 102 | phydev->supported); |
| 103 | linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported); |
| 104 | |
| 105 | return 0; |
| 106 | } |
| 107 | |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 108 | static int mt798x_2p5ge_phy_read_status(struct phy_device *phydev) |
| 109 | { |
| 110 | int ret; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 111 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 112 | ret = genphy_update_link(phydev); |
| 113 | if (ret) |
| 114 | return ret; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 115 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 116 | phydev->speed = SPEED_UNKNOWN; |
| 117 | phydev->duplex = DUPLEX_UNKNOWN; |
| 118 | phydev->pause = 0; |
| 119 | phydev->asym_pause = 0; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 120 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 121 | if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { |
| 122 | ret = genphy_c45_read_lpa(phydev); |
| 123 | if (ret < 0) |
| 124 | return ret; |
| 125 | |
| 126 | /* Read the link partner's 1G advertisement */ |
| 127 | ret = phy_read(phydev, MII_STAT1000); |
| 128 | if (ret < 0) |
| 129 | return ret; |
| 130 | mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, ret); |
| 131 | } else if (phydev->autoneg == AUTONEG_DISABLE) { |
| 132 | linkmode_zero(phydev->lp_advertising); |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 133 | } |
| 134 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 135 | ret = phy_read(phydev, PHY_AUX_CTRL_STATUS); |
| 136 | if (ret < 0) |
| 137 | return ret; |
| 138 | |
| 139 | /* Actually this phy supports only FDX */ |
| 140 | phydev->duplex = (ret & PHY_AUX_DPX_MASK) ? DUPLEX_FULL : DUPLEX_HALF; |
| 141 | switch (FIELD_GET(PHY_AUX_SPEED_MASK, ret)) { |
| 142 | case PHY_AUX_SPD_10: |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 143 | phydev->speed = SPEED_10; |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 144 | break; |
| 145 | case PHY_AUX_SPD_100: |
| 146 | phydev->speed = SPEED_100; |
| 147 | break; |
| 148 | case PHY_AUX_SPD_1000: |
| 149 | phydev->speed = SPEED_1000; |
| 150 | break; |
| 151 | case PHY_AUX_SPD_2500: |
| 152 | phydev->speed = SPEED_2500; |
| 153 | phydev->duplex = DUPLEX_FULL; /* 2.5G must be FDX */ |
| 154 | break; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 155 | } |
| 156 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 157 | return 0; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 158 | } |
| 159 | |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 160 | static struct phy_driver mtk_gephy_driver[] = { |
| 161 | { |
| 162 | PHY_ID_MATCH_EXACT(0x00339c11), |
| 163 | .name = "MediaTek MT798x 2.5GbE PHY", |
| 164 | .config_init = mt798x_2p5ge_phy_config_init, |
| 165 | .config_aneg = genphy_c45_config_aneg, |
| 166 | .get_features = mt798x_2p5ge_phy_get_features, |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 167 | .read_status = mt798x_2p5ge_phy_read_status, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 168 | //.config_intr = genphy_no_config_intr, |
| 169 | //.handle_interrupt = genphy_no_ack_interrupt, |
| 170 | //.suspend = genphy_suspend, |
| 171 | //.resume = genphy_resume, |
| 172 | }, |
| 173 | }; |
| 174 | |
| 175 | module_phy_driver(mtk_gephy_driver); |
| 176 | |
| 177 | static struct mdio_device_id __maybe_unused mtk_2p5ge_phy_tbl[] = { |
| 178 | { PHY_ID_MATCH_VENDOR(0x00339c00) }, |
| 179 | { } |
| 180 | }; |
| 181 | |
| 182 | MODULE_DESCRIPTION("MediaTek 2.5Gb Ethernet PHY driver"); |
| 183 | MODULE_AUTHOR("SkyLake Huang <SkyLake.Huang@mediatek.com>"); |
| 184 | MODULE_LICENSE("GPL"); |
| 185 | |
| 186 | MODULE_DEVICE_TABLE(mdio, mtk_2p5ge_phy_tbl); |