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> |
developer | aec59ea | 2023-04-10 16:58:03 +0800 | [diff] [blame] | 8 | #include <linux/pinctrl/consumer.h> |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 9 | #include <linux/phy.h> |
| 10 | |
| 11 | #define MEDAITEK_2P5GE_PHY_DMB_FW "mediatek-2p5ge-phy-dmb.bin" |
| 12 | #define MEDIATEK_2P5GE_PHY_PMB_FW "mediatek-2p5ge-phy-pmb.bin" |
| 13 | |
| 14 | #define MD32_EN_CFG 0x18 |
| 15 | #define MD32_EN BIT(0) |
| 16 | |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 17 | #define BASE100T_STATUS_EXTEND (0x10) |
| 18 | #define BASE1000T_STATUS_EXTEND (0x11) |
| 19 | #define EXTEND_CTRL_AND_STATUS (0x16) |
| 20 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 21 | #define PHY_AUX_CTRL_STATUS (0x1d) |
| 22 | #define PHY_AUX_DPX_MASK GENMASK(5, 5) |
| 23 | #define PHY_AUX_SPEED_MASK GENMASK(4, 2) |
| 24 | |
developer | aec59ea | 2023-04-10 16:58:03 +0800 | [diff] [blame] | 25 | /* Registers on MDIO_MMD_VEND2 */ |
| 26 | #define MTK_PHY_LED0_ON_CTRL (0x24) |
| 27 | #define MTK_PHY_LED0_POLARITY BIT(14) |
| 28 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 29 | enum { |
| 30 | PHY_AUX_SPD_10 = 0, |
| 31 | PHY_AUX_SPD_100, |
| 32 | PHY_AUX_SPD_1000, |
| 33 | PHY_AUX_SPD_2500, |
| 34 | }; |
| 35 | |
developer | aec59ea | 2023-04-10 16:58:03 +0800 | [diff] [blame] | 36 | static int mt798x_2p5ge_phy_probe(struct phy_device *phydev) |
| 37 | { |
| 38 | struct pinctrl *pinctrl; |
| 39 | |
| 40 | phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED0_ON_CTRL, |
| 41 | MTK_PHY_LED0_POLARITY); |
| 42 | |
| 43 | pinctrl = devm_pinctrl_get_select_default(&phydev->mdio.dev); |
| 44 | if (IS_ERR(pinctrl)) { |
| 45 | dev_err(&phydev->mdio.dev, "Fail to set LED pins!\n"); |
| 46 | return PTR_ERR(pinctrl); |
| 47 | } |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 52 | static int mt798x_2p5ge_phy_config_init(struct phy_device *phydev) |
| 53 | { |
| 54 | int ret; |
| 55 | int i; |
| 56 | const struct firmware *fw; |
| 57 | struct device *dev = &phydev->mdio.dev; |
| 58 | struct device_node *np; |
| 59 | void __iomem *dmb_addr; |
| 60 | void __iomem *pmb_addr; |
| 61 | void __iomem *mcucsr_base; |
| 62 | u16 reg; |
| 63 | |
| 64 | np = of_find_compatible_node(NULL, NULL, "mediatek,2p5gphy-fw"); |
| 65 | if (!np) |
| 66 | return -ENOENT; |
| 67 | |
| 68 | dmb_addr = of_iomap(np, 0); |
| 69 | if (!dmb_addr) |
| 70 | return -ENOMEM; |
| 71 | pmb_addr = of_iomap(np, 1); |
| 72 | if (!pmb_addr) |
| 73 | return -ENOMEM; |
| 74 | mcucsr_base = of_iomap(np, 2); |
| 75 | if (!mcucsr_base) |
| 76 | return -ENOMEM; |
| 77 | |
| 78 | ret = request_firmware(&fw, MEDAITEK_2P5GE_PHY_DMB_FW, dev); |
| 79 | if (ret) { |
| 80 | dev_err(dev, "failed to load firmware: %s, ret: %d\n", |
| 81 | MEDAITEK_2P5GE_PHY_DMB_FW, ret); |
| 82 | return ret; |
| 83 | } |
| 84 | for (i = 0; i < fw->size - 1; i += 4) |
| 85 | writel(*((uint32_t *)(fw->data + i)), dmb_addr + i); |
| 86 | release_firmware(fw); |
| 87 | |
| 88 | ret = request_firmware(&fw, MEDIATEK_2P5GE_PHY_PMB_FW, dev); |
| 89 | if (ret) { |
| 90 | dev_err(dev, "failed to load firmware: %s, ret: %d\n", |
| 91 | MEDIATEK_2P5GE_PHY_PMB_FW, ret); |
| 92 | return ret; |
| 93 | } |
| 94 | for (i = 0; i < fw->size - 1; i += 4) |
| 95 | writel(*((uint32_t *)(fw->data + i)), pmb_addr + i); |
| 96 | release_firmware(fw); |
| 97 | |
| 98 | reg = readw(mcucsr_base + MD32_EN_CFG); |
| 99 | writew(reg | MD32_EN, mcucsr_base + MD32_EN_CFG); |
| 100 | dev_info(dev, "Firmware loading/trigger ok.\n"); |
| 101 | |
| 102 | return 0; |
| 103 | } |
| 104 | |
developer | 1302b25 | 2022-12-30 19:04:55 +0800 | [diff] [blame] | 105 | static int mt798x_2p5ge_phy_config_aneg(struct phy_device *phydev) |
| 106 | { |
| 107 | bool changed = false; |
| 108 | u32 adv; |
| 109 | int ret; |
| 110 | |
| 111 | if (phydev->autoneg == AUTONEG_DISABLE) { |
| 112 | /* Configure half duplex with genphy_setup_forced, |
| 113 | * because genphy_c45_pma_setup_forced does not support. |
| 114 | */ |
| 115 | return phydev->duplex != DUPLEX_FULL |
| 116 | ? genphy_setup_forced(phydev) |
| 117 | : genphy_c45_pma_setup_forced(phydev); |
| 118 | } |
| 119 | |
| 120 | ret = genphy_c45_an_config_aneg(phydev); |
| 121 | if (ret < 0) |
| 122 | return ret; |
| 123 | if (ret > 0) |
| 124 | changed = true; |
| 125 | |
| 126 | adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising); |
| 127 | ret = phy_modify_changed(phydev, MII_CTRL1000, |
| 128 | ADVERTISE_1000FULL | ADVERTISE_1000HALF, |
| 129 | adv); |
| 130 | if (ret < 0) |
| 131 | return ret; |
| 132 | if (ret > 0) |
| 133 | changed = true; |
| 134 | |
| 135 | return genphy_c45_check_and_restart_aneg(phydev, changed); |
| 136 | } |
| 137 | |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 138 | static int mt798x_2p5ge_phy_get_features(struct phy_device *phydev) |
| 139 | { |
| 140 | int ret; |
| 141 | |
| 142 | ret = genphy_read_abilities(phydev); |
| 143 | if (ret) |
| 144 | return ret; |
| 145 | |
developer | d4abc8c | 2022-10-28 10:45:36 +0800 | [diff] [blame] | 146 | /* We don't support HDX at MAC layer on mt798x. |
| 147 | * So mask phy's HDX capabilities, too. |
| 148 | */ |
| 149 | linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 150 | phydev->supported); |
| 151 | linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, |
| 152 | phydev->supported); |
| 153 | linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, |
| 154 | phydev->supported); |
| 155 | linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, |
| 156 | phydev->supported); |
| 157 | linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported); |
| 158 | |
| 159 | return 0; |
| 160 | } |
| 161 | |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 162 | static int mt798x_2p5ge_phy_read_status(struct phy_device *phydev) |
| 163 | { |
| 164 | int ret; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 165 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 166 | ret = genphy_update_link(phydev); |
| 167 | if (ret) |
| 168 | return ret; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 169 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 170 | phydev->speed = SPEED_UNKNOWN; |
| 171 | phydev->duplex = DUPLEX_UNKNOWN; |
| 172 | phydev->pause = 0; |
| 173 | phydev->asym_pause = 0; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 174 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 175 | if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { |
| 176 | ret = genphy_c45_read_lpa(phydev); |
| 177 | if (ret < 0) |
| 178 | return ret; |
| 179 | |
| 180 | /* Read the link partner's 1G advertisement */ |
| 181 | ret = phy_read(phydev, MII_STAT1000); |
| 182 | if (ret < 0) |
| 183 | return ret; |
| 184 | mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, ret); |
| 185 | } else if (phydev->autoneg == AUTONEG_DISABLE) { |
| 186 | linkmode_zero(phydev->lp_advertising); |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 187 | } |
| 188 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 189 | ret = phy_read(phydev, PHY_AUX_CTRL_STATUS); |
| 190 | if (ret < 0) |
| 191 | return ret; |
| 192 | |
| 193 | /* Actually this phy supports only FDX */ |
| 194 | phydev->duplex = (ret & PHY_AUX_DPX_MASK) ? DUPLEX_FULL : DUPLEX_HALF; |
| 195 | switch (FIELD_GET(PHY_AUX_SPEED_MASK, ret)) { |
| 196 | case PHY_AUX_SPD_10: |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 197 | phydev->speed = SPEED_10; |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 198 | break; |
| 199 | case PHY_AUX_SPD_100: |
| 200 | phydev->speed = SPEED_100; |
| 201 | break; |
| 202 | case PHY_AUX_SPD_1000: |
| 203 | phydev->speed = SPEED_1000; |
| 204 | break; |
| 205 | case PHY_AUX_SPD_2500: |
| 206 | phydev->speed = SPEED_2500; |
| 207 | phydev->duplex = DUPLEX_FULL; /* 2.5G must be FDX */ |
| 208 | break; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 209 | } |
| 210 | |
developer | e7f6161 | 2022-12-30 11:34:52 +0800 | [diff] [blame] | 211 | return 0; |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 212 | } |
| 213 | |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 214 | static struct phy_driver mtk_gephy_driver[] = { |
| 215 | { |
| 216 | PHY_ID_MATCH_EXACT(0x00339c11), |
| 217 | .name = "MediaTek MT798x 2.5GbE PHY", |
developer | aec59ea | 2023-04-10 16:58:03 +0800 | [diff] [blame] | 218 | .probe = mt798x_2p5ge_phy_probe, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 219 | .config_init = mt798x_2p5ge_phy_config_init, |
developer | 1302b25 | 2022-12-30 19:04:55 +0800 | [diff] [blame] | 220 | .config_aneg = mt798x_2p5ge_phy_config_aneg, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 221 | .get_features = mt798x_2p5ge_phy_get_features, |
developer | 284cd6e | 2022-12-15 22:19:39 +0800 | [diff] [blame] | 222 | .read_status = mt798x_2p5ge_phy_read_status, |
developer | 2cdaeb1 | 2022-10-04 20:25:05 +0800 | [diff] [blame] | 223 | //.config_intr = genphy_no_config_intr, |
| 224 | //.handle_interrupt = genphy_no_ack_interrupt, |
| 225 | //.suspend = genphy_suspend, |
| 226 | //.resume = genphy_resume, |
| 227 | }, |
| 228 | }; |
| 229 | |
| 230 | module_phy_driver(mtk_gephy_driver); |
| 231 | |
| 232 | static struct mdio_device_id __maybe_unused mtk_2p5ge_phy_tbl[] = { |
| 233 | { PHY_ID_MATCH_VENDOR(0x00339c00) }, |
| 234 | { } |
| 235 | }; |
| 236 | |
| 237 | MODULE_DESCRIPTION("MediaTek 2.5Gb Ethernet PHY driver"); |
| 238 | MODULE_AUTHOR("SkyLake Huang <SkyLake.Huang@mediatek.com>"); |
| 239 | MODULE_LICENSE("GPL"); |
| 240 | |
| 241 | MODULE_DEVICE_TABLE(mdio, mtk_2p5ge_phy_tbl); |