1 // SPDX-License-Identifier: GPL-2.0+ 2 /* drivers/net/phy/realtek.c 3 * 4 * Driver for Realtek PHYs 5 * 6 * Author: Johnson Leung <r58129@freescale.com> 7 * 8 * Copyright (c) 2004 Freescale Semiconductor, Inc. 9 */ 10 #include <linux/bitops.h> 11 #include <linux/of.h> 12 #include <linux/phy.h> 13 #include <linux/module.h> 14 #include <linux/delay.h> 15 #include <linux/clk.h> 16 17 #define RTL821x_PHYSR 0x11 18 #define RTL821x_PHYSR_DUPLEX BIT(13) 19 #define RTL821x_PHYSR_SPEED GENMASK(15, 14) 20 21 #define RTL821x_INER 0x12 22 #define RTL8211B_INER_INIT 0x6400 23 #define RTL8211E_INER_LINK_STATUS BIT(10) 24 #define RTL8211F_INER_LINK_STATUS BIT(4) 25 26 #define RTL821x_INSR 0x13 27 28 #define RTL821x_EXT_PAGE_SELECT 0x1e 29 #define RTL821x_PAGE_SELECT 0x1f 30 31 #define RTL8211F_PHYCR1 0x18 32 #define RTL8211F_PHYCR2 0x19 33 #define RTL8211F_INSR 0x1d 34 35 #define RTL8211F_TX_DELAY BIT(8) 36 #define RTL8211F_RX_DELAY BIT(3) 37 38 #define RTL8211F_ALDPS_PLL_OFF BIT(1) 39 #define RTL8211F_ALDPS_ENABLE BIT(2) 40 #define RTL8211F_ALDPS_XTAL_OFF BIT(12) 41 42 #define RTL8211E_CTRL_DELAY BIT(13) 43 #define RTL8211E_TX_DELAY BIT(12) 44 #define RTL8211E_RX_DELAY BIT(11) 45 46 #define RTL8211F_CLKOUT_EN BIT(0) 47 48 #define RTL8201F_ISR 0x1e 49 #define RTL8201F_ISR_ANERR BIT(15) 50 #define RTL8201F_ISR_DUPLEX BIT(13) 51 #define RTL8201F_ISR_LINK BIT(11) 52 #define RTL8201F_ISR_MASK (RTL8201F_ISR_ANERR | \ 53 RTL8201F_ISR_DUPLEX | \ 54 RTL8201F_ISR_LINK) 55 #define RTL8201F_IER 0x13 56 57 #define RTL8366RB_POWER_SAVE 0x15 58 #define RTL8366RB_POWER_SAVE_ON BIT(12) 59 60 #define RTL_SUPPORTS_5000FULL BIT(14) 61 #define RTL_SUPPORTS_2500FULL BIT(13) 62 #define RTL_SUPPORTS_10000FULL BIT(0) 63 #define RTL_ADV_2500FULL BIT(7) 64 #define RTL_LPADV_10000FULL BIT(11) 65 #define RTL_LPADV_5000FULL BIT(6) 66 #define RTL_LPADV_2500FULL BIT(5) 67 68 #define RTL9000A_GINMR 0x14 69 #define RTL9000A_GINMR_LINK_STATUS BIT(4) 70 71 #define RTLGEN_SPEED_MASK 0x0630 72 73 #define RTL_GENERIC_PHYID 0x001cc800 74 #define RTL_8211FVD_PHYID 0x001cc878 75 76 MODULE_DESCRIPTION("Realtek PHY driver"); 77 MODULE_AUTHOR("Johnson Leung"); 78 MODULE_LICENSE("GPL"); 79 80 struct rtl821x_priv { 81 u16 phycr1; 82 u16 phycr2; 83 bool has_phycr2; 84 struct clk *clk; 85 }; 86 rtl821x_read_page(struct phy_device * phydev)87 static int rtl821x_read_page(struct phy_device *phydev) 88 { 89 return __phy_read(phydev, RTL821x_PAGE_SELECT); 90 } 91 rtl821x_write_page(struct phy_device * phydev,int page)92 static int rtl821x_write_page(struct phy_device *phydev, int page) 93 { 94 return __phy_write(phydev, RTL821x_PAGE_SELECT, page); 95 } 96 rtl821x_probe(struct phy_device * phydev)97 static int rtl821x_probe(struct phy_device *phydev) 98 { 99 struct device *dev = &phydev->mdio.dev; 100 struct rtl821x_priv *priv; 101 u32 phy_id = phydev->drv->phy_id; 102 int ret; 103 104 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 105 if (!priv) 106 return -ENOMEM; 107 108 priv->clk = devm_clk_get_optional_enabled(dev, NULL); 109 if (IS_ERR(priv->clk)) 110 return dev_err_probe(dev, PTR_ERR(priv->clk), 111 "failed to get phy clock\n"); 112 113 ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR1); 114 if (ret < 0) 115 return ret; 116 117 priv->phycr1 = ret & (RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF); 118 if (of_property_read_bool(dev->of_node, "realtek,aldps-enable")) 119 priv->phycr1 |= RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF; 120 121 priv->has_phycr2 = !(phy_id == RTL_8211FVD_PHYID); 122 if (priv->has_phycr2) { 123 ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR2); 124 if (ret < 0) 125 return ret; 126 127 priv->phycr2 = ret & RTL8211F_CLKOUT_EN; 128 if (of_property_read_bool(dev->of_node, "realtek,clkout-disable")) 129 priv->phycr2 &= ~RTL8211F_CLKOUT_EN; 130 } 131 132 phydev->priv = priv; 133 134 return 0; 135 } 136 rtl8201_ack_interrupt(struct phy_device * phydev)137 static int rtl8201_ack_interrupt(struct phy_device *phydev) 138 { 139 int err; 140 141 err = phy_read(phydev, RTL8201F_ISR); 142 143 return (err < 0) ? err : 0; 144 } 145 rtl821x_ack_interrupt(struct phy_device * phydev)146 static int rtl821x_ack_interrupt(struct phy_device *phydev) 147 { 148 int err; 149 150 err = phy_read(phydev, RTL821x_INSR); 151 152 return (err < 0) ? err : 0; 153 } 154 rtl8211f_ack_interrupt(struct phy_device * phydev)155 static int rtl8211f_ack_interrupt(struct phy_device *phydev) 156 { 157 int err; 158 159 err = phy_read_paged(phydev, 0xa43, RTL8211F_INSR); 160 161 return (err < 0) ? err : 0; 162 } 163 rtl8201_config_intr(struct phy_device * phydev)164 static int rtl8201_config_intr(struct phy_device *phydev) 165 { 166 u16 val; 167 int err; 168 169 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { 170 err = rtl8201_ack_interrupt(phydev); 171 if (err) 172 return err; 173 174 val = BIT(13) | BIT(12) | BIT(11); 175 err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val); 176 } else { 177 val = 0; 178 err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val); 179 if (err) 180 return err; 181 182 err = rtl8201_ack_interrupt(phydev); 183 } 184 185 return err; 186 } 187 rtl8211b_config_intr(struct phy_device * phydev)188 static int rtl8211b_config_intr(struct phy_device *phydev) 189 { 190 int err; 191 192 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { 193 err = rtl821x_ack_interrupt(phydev); 194 if (err) 195 return err; 196 197 err = phy_write(phydev, RTL821x_INER, 198 RTL8211B_INER_INIT); 199 } else { 200 err = phy_write(phydev, RTL821x_INER, 0); 201 if (err) 202 return err; 203 204 err = rtl821x_ack_interrupt(phydev); 205 } 206 207 return err; 208 } 209 rtl8211e_config_intr(struct phy_device * phydev)210 static int rtl8211e_config_intr(struct phy_device *phydev) 211 { 212 int err; 213 214 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { 215 err = rtl821x_ack_interrupt(phydev); 216 if (err) 217 return err; 218 219 err = phy_write(phydev, RTL821x_INER, 220 RTL8211E_INER_LINK_STATUS); 221 } else { 222 err = phy_write(phydev, RTL821x_INER, 0); 223 if (err) 224 return err; 225 226 err = rtl821x_ack_interrupt(phydev); 227 } 228 229 return err; 230 } 231 rtl8211f_config_intr(struct phy_device * phydev)232 static int rtl8211f_config_intr(struct phy_device *phydev) 233 { 234 u16 val; 235 int err; 236 237 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { 238 err = rtl8211f_ack_interrupt(phydev); 239 if (err) 240 return err; 241 242 val = RTL8211F_INER_LINK_STATUS; 243 err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val); 244 } else { 245 val = 0; 246 err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val); 247 if (err) 248 return err; 249 250 err = rtl8211f_ack_interrupt(phydev); 251 } 252 253 return err; 254 } 255 rtl8201_handle_interrupt(struct phy_device * phydev)256 static irqreturn_t rtl8201_handle_interrupt(struct phy_device *phydev) 257 { 258 int irq_status; 259 260 irq_status = phy_read(phydev, RTL8201F_ISR); 261 if (irq_status < 0) { 262 phy_error(phydev); 263 return IRQ_NONE; 264 } 265 266 if (!(irq_status & RTL8201F_ISR_MASK)) 267 return IRQ_NONE; 268 269 phy_trigger_machine(phydev); 270 271 return IRQ_HANDLED; 272 } 273 rtl821x_handle_interrupt(struct phy_device * phydev)274 static irqreturn_t rtl821x_handle_interrupt(struct phy_device *phydev) 275 { 276 int irq_status, irq_enabled; 277 278 irq_status = phy_read(phydev, RTL821x_INSR); 279 if (irq_status < 0) { 280 phy_error(phydev); 281 return IRQ_NONE; 282 } 283 284 irq_enabled = phy_read(phydev, RTL821x_INER); 285 if (irq_enabled < 0) { 286 phy_error(phydev); 287 return IRQ_NONE; 288 } 289 290 if (!(irq_status & irq_enabled)) 291 return IRQ_NONE; 292 293 phy_trigger_machine(phydev); 294 295 return IRQ_HANDLED; 296 } 297 rtl8211f_handle_interrupt(struct phy_device * phydev)298 static irqreturn_t rtl8211f_handle_interrupt(struct phy_device *phydev) 299 { 300 int irq_status; 301 302 irq_status = phy_read_paged(phydev, 0xa43, RTL8211F_INSR); 303 if (irq_status < 0) { 304 phy_error(phydev); 305 return IRQ_NONE; 306 } 307 308 if (!(irq_status & RTL8211F_INER_LINK_STATUS)) 309 return IRQ_NONE; 310 311 phy_trigger_machine(phydev); 312 313 return IRQ_HANDLED; 314 } 315 rtl8211_config_aneg(struct phy_device * phydev)316 static int rtl8211_config_aneg(struct phy_device *phydev) 317 { 318 int ret; 319 320 ret = genphy_config_aneg(phydev); 321 if (ret < 0) 322 return ret; 323 324 /* Quirk was copied from vendor driver. Unfortunately it includes no 325 * description of the magic numbers. 326 */ 327 if (phydev->speed == SPEED_100 && phydev->autoneg == AUTONEG_DISABLE) { 328 phy_write(phydev, 0x17, 0x2138); 329 phy_write(phydev, 0x0e, 0x0260); 330 } else { 331 phy_write(phydev, 0x17, 0x2108); 332 phy_write(phydev, 0x0e, 0x0000); 333 } 334 335 return 0; 336 } 337 rtl8211c_config_init(struct phy_device * phydev)338 static int rtl8211c_config_init(struct phy_device *phydev) 339 { 340 /* RTL8211C has an issue when operating in Gigabit slave mode */ 341 return phy_set_bits(phydev, MII_CTRL1000, 342 CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER); 343 } 344 rtl8211f_config_init(struct phy_device * phydev)345 static int rtl8211f_config_init(struct phy_device *phydev) 346 { 347 struct rtl821x_priv *priv = phydev->priv; 348 struct device *dev = &phydev->mdio.dev; 349 u16 val_txdly, val_rxdly; 350 int ret; 351 352 ret = phy_modify_paged_changed(phydev, 0xa43, RTL8211F_PHYCR1, 353 RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF, 354 priv->phycr1); 355 if (ret < 0) { 356 dev_err(dev, "aldps mode configuration failed: %pe\n", 357 ERR_PTR(ret)); 358 return ret; 359 } 360 361 switch (phydev->interface) { 362 case PHY_INTERFACE_MODE_RGMII: 363 val_txdly = 0; 364 val_rxdly = 0; 365 break; 366 367 case PHY_INTERFACE_MODE_RGMII_RXID: 368 val_txdly = 0; 369 val_rxdly = RTL8211F_RX_DELAY; 370 break; 371 372 case PHY_INTERFACE_MODE_RGMII_TXID: 373 val_txdly = RTL8211F_TX_DELAY; 374 val_rxdly = 0; 375 break; 376 377 case PHY_INTERFACE_MODE_RGMII_ID: 378 val_txdly = RTL8211F_TX_DELAY; 379 val_rxdly = RTL8211F_RX_DELAY; 380 break; 381 382 default: /* the rest of the modes imply leaving delay as is. */ 383 return 0; 384 } 385 386 ret = phy_modify_paged_changed(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY, 387 val_txdly); 388 if (ret < 0) { 389 dev_err(dev, "Failed to update the TX delay register\n"); 390 return ret; 391 } else if (ret) { 392 dev_dbg(dev, 393 "%s 2ns TX delay (and changing the value from pin-strapping RXD1 or the bootloader)\n", 394 val_txdly ? "Enabling" : "Disabling"); 395 } else { 396 dev_dbg(dev, 397 "2ns TX delay was already %s (by pin-strapping RXD1 or bootloader configuration)\n", 398 val_txdly ? "enabled" : "disabled"); 399 } 400 401 ret = phy_modify_paged_changed(phydev, 0xd08, 0x15, RTL8211F_RX_DELAY, 402 val_rxdly); 403 if (ret < 0) { 404 dev_err(dev, "Failed to update the RX delay register\n"); 405 return ret; 406 } else if (ret) { 407 dev_dbg(dev, 408 "%s 2ns RX delay (and changing the value from pin-strapping RXD0 or the bootloader)\n", 409 val_rxdly ? "Enabling" : "Disabling"); 410 } else { 411 dev_dbg(dev, 412 "2ns RX delay was already %s (by pin-strapping RXD0 or bootloader configuration)\n", 413 val_rxdly ? "enabled" : "disabled"); 414 } 415 416 if (priv->has_phycr2) { 417 ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2, 418 RTL8211F_CLKOUT_EN, priv->phycr2); 419 if (ret < 0) { 420 dev_err(dev, "clkout configuration failed: %pe\n", 421 ERR_PTR(ret)); 422 return ret; 423 } 424 425 return genphy_soft_reset(phydev); 426 } 427 428 return 0; 429 } 430 rtl821x_suspend(struct phy_device * phydev)431 static int rtl821x_suspend(struct phy_device *phydev) 432 { 433 struct rtl821x_priv *priv = phydev->priv; 434 int ret = 0; 435 436 if (!phydev->wol_enabled) { 437 ret = genphy_suspend(phydev); 438 439 if (ret) 440 return ret; 441 442 clk_disable_unprepare(priv->clk); 443 } 444 445 return ret; 446 } 447 rtl821x_resume(struct phy_device * phydev)448 static int rtl821x_resume(struct phy_device *phydev) 449 { 450 struct rtl821x_priv *priv = phydev->priv; 451 int ret; 452 453 if (!phydev->wol_enabled) 454 clk_prepare_enable(priv->clk); 455 456 ret = genphy_resume(phydev); 457 if (ret < 0) 458 return ret; 459 460 msleep(20); 461 462 return 0; 463 } 464 rtl8211e_config_init(struct phy_device * phydev)465 static int rtl8211e_config_init(struct phy_device *phydev) 466 { 467 int ret = 0, oldpage; 468 u16 val; 469 470 /* enable TX/RX delay for rgmii-* modes, and disable them for rgmii. */ 471 switch (phydev->interface) { 472 case PHY_INTERFACE_MODE_RGMII: 473 val = RTL8211E_CTRL_DELAY | 0; 474 break; 475 case PHY_INTERFACE_MODE_RGMII_ID: 476 val = RTL8211E_CTRL_DELAY | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY; 477 break; 478 case PHY_INTERFACE_MODE_RGMII_RXID: 479 val = RTL8211E_CTRL_DELAY | RTL8211E_RX_DELAY; 480 break; 481 case PHY_INTERFACE_MODE_RGMII_TXID: 482 val = RTL8211E_CTRL_DELAY | RTL8211E_TX_DELAY; 483 break; 484 default: /* the rest of the modes imply leaving delays as is. */ 485 return 0; 486 } 487 488 /* According to a sample driver there is a 0x1c config register on the 489 * 0xa4 extension page (0x7) layout. It can be used to disable/enable 490 * the RX/TX delays otherwise controlled by RXDLY/TXDLY pins. 491 * The configuration register definition: 492 * 14 = reserved 493 * 13 = Force Tx RX Delay controlled by bit12 bit11, 494 * 12 = RX Delay, 11 = TX Delay 495 * 10:0 = Test && debug settings reserved by realtek 496 */ 497 oldpage = phy_select_page(phydev, 0x7); 498 if (oldpage < 0) 499 goto err_restore_page; 500 501 ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0xa4); 502 if (ret) 503 goto err_restore_page; 504 505 ret = __phy_modify(phydev, 0x1c, RTL8211E_CTRL_DELAY 506 | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY, 507 val); 508 509 err_restore_page: 510 return phy_restore_page(phydev, oldpage, ret); 511 } 512 rtl8211b_suspend(struct phy_device * phydev)513 static int rtl8211b_suspend(struct phy_device *phydev) 514 { 515 phy_write(phydev, MII_MMD_DATA, BIT(9)); 516 517 return genphy_suspend(phydev); 518 } 519 rtl8211b_resume(struct phy_device * phydev)520 static int rtl8211b_resume(struct phy_device *phydev) 521 { 522 phy_write(phydev, MII_MMD_DATA, 0); 523 524 return genphy_resume(phydev); 525 } 526 rtl8366rb_config_init(struct phy_device * phydev)527 static int rtl8366rb_config_init(struct phy_device *phydev) 528 { 529 int ret; 530 531 ret = phy_set_bits(phydev, RTL8366RB_POWER_SAVE, 532 RTL8366RB_POWER_SAVE_ON); 533 if (ret) { 534 dev_err(&phydev->mdio.dev, 535 "error enabling power management\n"); 536 } 537 538 return ret; 539 } 540 541 /* get actual speed to cover the downshift case */ rtlgen_get_speed(struct phy_device * phydev)542 static int rtlgen_get_speed(struct phy_device *phydev) 543 { 544 int val; 545 546 if (!phydev->link) 547 return 0; 548 549 val = phy_read_paged(phydev, 0xa43, 0x12); 550 if (val < 0) 551 return val; 552 553 switch (val & RTLGEN_SPEED_MASK) { 554 case 0x0000: 555 phydev->speed = SPEED_10; 556 break; 557 case 0x0010: 558 phydev->speed = SPEED_100; 559 break; 560 case 0x0020: 561 phydev->speed = SPEED_1000; 562 break; 563 case 0x0200: 564 phydev->speed = SPEED_10000; 565 break; 566 case 0x0210: 567 phydev->speed = SPEED_2500; 568 break; 569 case 0x0220: 570 phydev->speed = SPEED_5000; 571 break; 572 default: 573 break; 574 } 575 576 return 0; 577 } 578 rtlgen_read_status(struct phy_device * phydev)579 static int rtlgen_read_status(struct phy_device *phydev) 580 { 581 int ret; 582 583 ret = genphy_read_status(phydev); 584 if (ret < 0) 585 return ret; 586 587 return rtlgen_get_speed(phydev); 588 } 589 rtlgen_read_mmd(struct phy_device * phydev,int devnum,u16 regnum)590 static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum) 591 { 592 int ret; 593 594 if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) { 595 rtl821x_write_page(phydev, 0xa5c); 596 ret = __phy_read(phydev, 0x12); 597 rtl821x_write_page(phydev, 0); 598 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) { 599 rtl821x_write_page(phydev, 0xa5d); 600 ret = __phy_read(phydev, 0x10); 601 rtl821x_write_page(phydev, 0); 602 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE) { 603 rtl821x_write_page(phydev, 0xa5d); 604 ret = __phy_read(phydev, 0x11); 605 rtl821x_write_page(phydev, 0); 606 } else { 607 ret = -EOPNOTSUPP; 608 } 609 610 return ret; 611 } 612 rtlgen_write_mmd(struct phy_device * phydev,int devnum,u16 regnum,u16 val)613 static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum, 614 u16 val) 615 { 616 int ret; 617 618 if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) { 619 rtl821x_write_page(phydev, 0xa5d); 620 ret = __phy_write(phydev, 0x10, val); 621 rtl821x_write_page(phydev, 0); 622 } else { 623 ret = -EOPNOTSUPP; 624 } 625 626 return ret; 627 } 628 rtl822x_read_mmd(struct phy_device * phydev,int devnum,u16 regnum)629 static int rtl822x_read_mmd(struct phy_device *phydev, int devnum, u16 regnum) 630 { 631 int ret = rtlgen_read_mmd(phydev, devnum, regnum); 632 633 if (ret != -EOPNOTSUPP) 634 return ret; 635 636 if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2) { 637 rtl821x_write_page(phydev, 0xa6e); 638 ret = __phy_read(phydev, 0x16); 639 rtl821x_write_page(phydev, 0); 640 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) { 641 rtl821x_write_page(phydev, 0xa6d); 642 ret = __phy_read(phydev, 0x12); 643 rtl821x_write_page(phydev, 0); 644 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2) { 645 rtl821x_write_page(phydev, 0xa6d); 646 ret = __phy_read(phydev, 0x10); 647 rtl821x_write_page(phydev, 0); 648 } 649 650 return ret; 651 } 652 rtl822x_write_mmd(struct phy_device * phydev,int devnum,u16 regnum,u16 val)653 static int rtl822x_write_mmd(struct phy_device *phydev, int devnum, u16 regnum, 654 u16 val) 655 { 656 int ret = rtlgen_write_mmd(phydev, devnum, regnum, val); 657 658 if (ret != -EOPNOTSUPP) 659 return ret; 660 661 if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) { 662 rtl821x_write_page(phydev, 0xa6d); 663 ret = __phy_write(phydev, 0x12, val); 664 rtl821x_write_page(phydev, 0); 665 } 666 667 return ret; 668 } 669 rtl822x_get_features(struct phy_device * phydev)670 static int rtl822x_get_features(struct phy_device *phydev) 671 { 672 int val; 673 674 val = phy_read_paged(phydev, 0xa61, 0x13); 675 if (val < 0) 676 return val; 677 678 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 679 phydev->supported, val & RTL_SUPPORTS_2500FULL); 680 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 681 phydev->supported, val & RTL_SUPPORTS_5000FULL); 682 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, 683 phydev->supported, val & RTL_SUPPORTS_10000FULL); 684 685 return genphy_read_abilities(phydev); 686 } 687 rtl822x_config_aneg(struct phy_device * phydev)688 static int rtl822x_config_aneg(struct phy_device *phydev) 689 { 690 int ret = 0; 691 692 if (phydev->autoneg == AUTONEG_ENABLE) { 693 u16 adv2500 = 0; 694 695 if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 696 phydev->advertising)) 697 adv2500 = RTL_ADV_2500FULL; 698 699 ret = phy_modify_paged_changed(phydev, 0xa5d, 0x12, 700 RTL_ADV_2500FULL, adv2500); 701 if (ret < 0) 702 return ret; 703 } 704 705 return __genphy_config_aneg(phydev, ret); 706 } 707 rtl822x_read_status(struct phy_device * phydev)708 static int rtl822x_read_status(struct phy_device *phydev) 709 { 710 int ret; 711 712 if (phydev->autoneg == AUTONEG_ENABLE) { 713 int lpadv = phy_read_paged(phydev, 0xa5d, 0x13); 714 715 if (lpadv < 0) 716 return lpadv; 717 718 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, 719 phydev->lp_advertising, lpadv & RTL_LPADV_10000FULL); 720 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 721 phydev->lp_advertising, lpadv & RTL_LPADV_5000FULL); 722 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 723 phydev->lp_advertising, lpadv & RTL_LPADV_2500FULL); 724 } 725 726 ret = genphy_read_status(phydev); 727 if (ret < 0) 728 return ret; 729 730 return rtlgen_get_speed(phydev); 731 } 732 rtlgen_supports_2_5gbps(struct phy_device * phydev)733 static bool rtlgen_supports_2_5gbps(struct phy_device *phydev) 734 { 735 int val; 736 737 phy_write(phydev, RTL821x_PAGE_SELECT, 0xa61); 738 val = phy_read(phydev, 0x13); 739 phy_write(phydev, RTL821x_PAGE_SELECT, 0); 740 741 return val >= 0 && val & RTL_SUPPORTS_2500FULL; 742 } 743 rtlgen_match_phy_device(struct phy_device * phydev)744 static int rtlgen_match_phy_device(struct phy_device *phydev) 745 { 746 return phydev->phy_id == RTL_GENERIC_PHYID && 747 !rtlgen_supports_2_5gbps(phydev); 748 } 749 rtl8226_match_phy_device(struct phy_device * phydev)750 static int rtl8226_match_phy_device(struct phy_device *phydev) 751 { 752 return phydev->phy_id == RTL_GENERIC_PHYID && 753 rtlgen_supports_2_5gbps(phydev); 754 } 755 rtlgen_resume(struct phy_device * phydev)756 static int rtlgen_resume(struct phy_device *phydev) 757 { 758 int ret = genphy_resume(phydev); 759 760 /* Internal PHY's from RTL8168h up may not be instantly ready */ 761 msleep(20); 762 763 return ret; 764 } 765 rtl9000a_config_init(struct phy_device * phydev)766 static int rtl9000a_config_init(struct phy_device *phydev) 767 { 768 phydev->autoneg = AUTONEG_DISABLE; 769 phydev->speed = SPEED_100; 770 phydev->duplex = DUPLEX_FULL; 771 772 return 0; 773 } 774 rtl9000a_config_aneg(struct phy_device * phydev)775 static int rtl9000a_config_aneg(struct phy_device *phydev) 776 { 777 int ret; 778 u16 ctl = 0; 779 780 switch (phydev->master_slave_set) { 781 case MASTER_SLAVE_CFG_MASTER_FORCE: 782 ctl |= CTL1000_AS_MASTER; 783 break; 784 case MASTER_SLAVE_CFG_SLAVE_FORCE: 785 break; 786 case MASTER_SLAVE_CFG_UNKNOWN: 787 case MASTER_SLAVE_CFG_UNSUPPORTED: 788 return 0; 789 default: 790 phydev_warn(phydev, "Unsupported Master/Slave mode\n"); 791 return -EOPNOTSUPP; 792 } 793 794 ret = phy_modify_changed(phydev, MII_CTRL1000, CTL1000_AS_MASTER, ctl); 795 if (ret == 1) 796 ret = genphy_soft_reset(phydev); 797 798 return ret; 799 } 800 rtl9000a_read_status(struct phy_device * phydev)801 static int rtl9000a_read_status(struct phy_device *phydev) 802 { 803 int ret; 804 805 phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN; 806 phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN; 807 808 ret = genphy_update_link(phydev); 809 if (ret) 810 return ret; 811 812 ret = phy_read(phydev, MII_CTRL1000); 813 if (ret < 0) 814 return ret; 815 if (ret & CTL1000_AS_MASTER) 816 phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_FORCE; 817 else 818 phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_FORCE; 819 820 ret = phy_read(phydev, MII_STAT1000); 821 if (ret < 0) 822 return ret; 823 if (ret & LPA_1000MSRES) 824 phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER; 825 else 826 phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE; 827 828 return 0; 829 } 830 rtl9000a_ack_interrupt(struct phy_device * phydev)831 static int rtl9000a_ack_interrupt(struct phy_device *phydev) 832 { 833 int err; 834 835 err = phy_read(phydev, RTL8211F_INSR); 836 837 return (err < 0) ? err : 0; 838 } 839 rtl9000a_config_intr(struct phy_device * phydev)840 static int rtl9000a_config_intr(struct phy_device *phydev) 841 { 842 u16 val; 843 int err; 844 845 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { 846 err = rtl9000a_ack_interrupt(phydev); 847 if (err) 848 return err; 849 850 val = (u16)~RTL9000A_GINMR_LINK_STATUS; 851 err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val); 852 } else { 853 val = ~0; 854 err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val); 855 if (err) 856 return err; 857 858 err = rtl9000a_ack_interrupt(phydev); 859 } 860 861 return phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val); 862 } 863 rtl9000a_handle_interrupt(struct phy_device * phydev)864 static irqreturn_t rtl9000a_handle_interrupt(struct phy_device *phydev) 865 { 866 int irq_status; 867 868 irq_status = phy_read(phydev, RTL8211F_INSR); 869 if (irq_status < 0) { 870 phy_error(phydev); 871 return IRQ_NONE; 872 } 873 874 if (!(irq_status & RTL8211F_INER_LINK_STATUS)) 875 return IRQ_NONE; 876 877 phy_trigger_machine(phydev); 878 879 return IRQ_HANDLED; 880 } 881 882 static struct phy_driver realtek_drvs[] = { 883 { 884 PHY_ID_MATCH_EXACT(0x00008201), 885 .name = "RTL8201CP Ethernet", 886 .read_page = rtl821x_read_page, 887 .write_page = rtl821x_write_page, 888 }, { 889 PHY_ID_MATCH_EXACT(0x001cc816), 890 .name = "RTL8201F Fast Ethernet", 891 .config_intr = &rtl8201_config_intr, 892 .handle_interrupt = rtl8201_handle_interrupt, 893 .suspend = genphy_suspend, 894 .resume = genphy_resume, 895 .read_page = rtl821x_read_page, 896 .write_page = rtl821x_write_page, 897 }, { 898 PHY_ID_MATCH_MODEL(0x001cc880), 899 .name = "RTL8208 Fast Ethernet", 900 .read_mmd = genphy_read_mmd_unsupported, 901 .write_mmd = genphy_write_mmd_unsupported, 902 .suspend = genphy_suspend, 903 .resume = genphy_resume, 904 .read_page = rtl821x_read_page, 905 .write_page = rtl821x_write_page, 906 }, { 907 PHY_ID_MATCH_EXACT(0x001cc910), 908 .name = "RTL8211 Gigabit Ethernet", 909 .config_aneg = rtl8211_config_aneg, 910 .read_mmd = &genphy_read_mmd_unsupported, 911 .write_mmd = &genphy_write_mmd_unsupported, 912 .read_page = rtl821x_read_page, 913 .write_page = rtl821x_write_page, 914 }, { 915 PHY_ID_MATCH_EXACT(0x001cc912), 916 .name = "RTL8211B Gigabit Ethernet", 917 .config_intr = &rtl8211b_config_intr, 918 .handle_interrupt = rtl821x_handle_interrupt, 919 .read_mmd = &genphy_read_mmd_unsupported, 920 .write_mmd = &genphy_write_mmd_unsupported, 921 .suspend = rtl8211b_suspend, 922 .resume = rtl8211b_resume, 923 .read_page = rtl821x_read_page, 924 .write_page = rtl821x_write_page, 925 }, { 926 PHY_ID_MATCH_EXACT(0x001cc913), 927 .name = "RTL8211C Gigabit Ethernet", 928 .config_init = rtl8211c_config_init, 929 .read_mmd = &genphy_read_mmd_unsupported, 930 .write_mmd = &genphy_write_mmd_unsupported, 931 .read_page = rtl821x_read_page, 932 .write_page = rtl821x_write_page, 933 }, { 934 PHY_ID_MATCH_EXACT(0x001cc914), 935 .name = "RTL8211DN Gigabit Ethernet", 936 .config_intr = rtl8211e_config_intr, 937 .handle_interrupt = rtl821x_handle_interrupt, 938 .suspend = genphy_suspend, 939 .resume = genphy_resume, 940 .read_page = rtl821x_read_page, 941 .write_page = rtl821x_write_page, 942 }, { 943 PHY_ID_MATCH_EXACT(0x001cc915), 944 .name = "RTL8211E Gigabit Ethernet", 945 .config_init = &rtl8211e_config_init, 946 .config_intr = &rtl8211e_config_intr, 947 .handle_interrupt = rtl821x_handle_interrupt, 948 .suspend = genphy_suspend, 949 .resume = genphy_resume, 950 .read_page = rtl821x_read_page, 951 .write_page = rtl821x_write_page, 952 }, { 953 PHY_ID_MATCH_EXACT(0x001cc916), 954 .name = "RTL8211F Gigabit Ethernet", 955 .probe = rtl821x_probe, 956 .config_init = &rtl8211f_config_init, 957 .read_status = rtlgen_read_status, 958 .config_intr = &rtl8211f_config_intr, 959 .handle_interrupt = rtl8211f_handle_interrupt, 960 .suspend = rtl821x_suspend, 961 .resume = rtl821x_resume, 962 .read_page = rtl821x_read_page, 963 .write_page = rtl821x_write_page, 964 .flags = PHY_ALWAYS_CALL_SUSPEND, 965 }, { 966 PHY_ID_MATCH_EXACT(RTL_8211FVD_PHYID), 967 .name = "RTL8211F-VD Gigabit Ethernet", 968 .probe = rtl821x_probe, 969 .config_init = &rtl8211f_config_init, 970 .read_status = rtlgen_read_status, 971 .config_intr = &rtl8211f_config_intr, 972 .handle_interrupt = rtl8211f_handle_interrupt, 973 .suspend = rtl821x_suspend, 974 .resume = rtl821x_resume, 975 .read_page = rtl821x_read_page, 976 .write_page = rtl821x_write_page, 977 .flags = PHY_ALWAYS_CALL_SUSPEND, 978 }, { 979 .name = "Generic FE-GE Realtek PHY", 980 .match_phy_device = rtlgen_match_phy_device, 981 .read_status = rtlgen_read_status, 982 .suspend = genphy_suspend, 983 .resume = rtlgen_resume, 984 .read_page = rtl821x_read_page, 985 .write_page = rtl821x_write_page, 986 .read_mmd = rtlgen_read_mmd, 987 .write_mmd = rtlgen_write_mmd, 988 }, { 989 .name = "RTL8226 2.5Gbps PHY", 990 .match_phy_device = rtl8226_match_phy_device, 991 .get_features = rtl822x_get_features, 992 .config_aneg = rtl822x_config_aneg, 993 .read_status = rtl822x_read_status, 994 .suspend = genphy_suspend, 995 .resume = rtlgen_resume, 996 .read_page = rtl821x_read_page, 997 .write_page = rtl821x_write_page, 998 .read_mmd = rtl822x_read_mmd, 999 .write_mmd = rtl822x_write_mmd, 1000 }, { 1001 PHY_ID_MATCH_EXACT(0x001cc840), 1002 .name = "RTL8226B_RTL8221B 2.5Gbps PHY", 1003 .get_features = rtl822x_get_features, 1004 .config_aneg = rtl822x_config_aneg, 1005 .read_status = rtl822x_read_status, 1006 .suspend = genphy_suspend, 1007 .resume = rtlgen_resume, 1008 .read_page = rtl821x_read_page, 1009 .write_page = rtl821x_write_page, 1010 .read_mmd = rtl822x_read_mmd, 1011 .write_mmd = rtl822x_write_mmd, 1012 }, { 1013 PHY_ID_MATCH_EXACT(0x001cc838), 1014 .name = "RTL8226-CG 2.5Gbps PHY", 1015 .get_features = rtl822x_get_features, 1016 .config_aneg = rtl822x_config_aneg, 1017 .read_status = rtl822x_read_status, 1018 .suspend = genphy_suspend, 1019 .resume = rtlgen_resume, 1020 .read_page = rtl821x_read_page, 1021 .write_page = rtl821x_write_page, 1022 }, { 1023 PHY_ID_MATCH_EXACT(0x001cc848), 1024 .name = "RTL8226B-CG_RTL8221B-CG 2.5Gbps PHY", 1025 .get_features = rtl822x_get_features, 1026 .config_aneg = rtl822x_config_aneg, 1027 .read_status = rtl822x_read_status, 1028 .suspend = genphy_suspend, 1029 .resume = rtlgen_resume, 1030 .read_page = rtl821x_read_page, 1031 .write_page = rtl821x_write_page, 1032 }, { 1033 PHY_ID_MATCH_EXACT(0x001cc849), 1034 .name = "RTL8221B-VB-CG 2.5Gbps PHY", 1035 .get_features = rtl822x_get_features, 1036 .config_aneg = rtl822x_config_aneg, 1037 .read_status = rtl822x_read_status, 1038 .suspend = genphy_suspend, 1039 .resume = rtlgen_resume, 1040 .read_page = rtl821x_read_page, 1041 .write_page = rtl821x_write_page, 1042 }, { 1043 PHY_ID_MATCH_EXACT(0x001cc84a), 1044 .name = "RTL8221B-VM-CG 2.5Gbps PHY", 1045 .get_features = rtl822x_get_features, 1046 .config_aneg = rtl822x_config_aneg, 1047 .read_status = rtl822x_read_status, 1048 .suspend = genphy_suspend, 1049 .resume = rtlgen_resume, 1050 .read_page = rtl821x_read_page, 1051 .write_page = rtl821x_write_page, 1052 }, { 1053 PHY_ID_MATCH_EXACT(0x001cc961), 1054 .name = "RTL8366RB Gigabit Ethernet", 1055 .config_init = &rtl8366rb_config_init, 1056 /* These interrupts are handled by the irq controller 1057 * embedded inside the RTL8366RB, they get unmasked when the 1058 * irq is requested and ACKed by reading the status register, 1059 * which is done by the irqchip code. 1060 */ 1061 .config_intr = genphy_no_config_intr, 1062 .handle_interrupt = genphy_handle_interrupt_no_ack, 1063 .suspend = genphy_suspend, 1064 .resume = genphy_resume, 1065 }, { 1066 PHY_ID_MATCH_EXACT(0x001ccb00), 1067 .name = "RTL9000AA_RTL9000AN Ethernet", 1068 .features = PHY_BASIC_T1_FEATURES, 1069 .config_init = rtl9000a_config_init, 1070 .config_aneg = rtl9000a_config_aneg, 1071 .read_status = rtl9000a_read_status, 1072 .config_intr = rtl9000a_config_intr, 1073 .handle_interrupt = rtl9000a_handle_interrupt, 1074 .suspend = genphy_suspend, 1075 .resume = genphy_resume, 1076 .read_page = rtl821x_read_page, 1077 .write_page = rtl821x_write_page, 1078 }, { 1079 PHY_ID_MATCH_EXACT(0x001cc942), 1080 .name = "RTL8365MB-VC Gigabit Ethernet", 1081 /* Interrupt handling analogous to RTL8366RB */ 1082 .config_intr = genphy_no_config_intr, 1083 .handle_interrupt = genphy_handle_interrupt_no_ack, 1084 .suspend = genphy_suspend, 1085 .resume = genphy_resume, 1086 }, { 1087 PHY_ID_MATCH_EXACT(0x001cc960), 1088 .name = "RTL8366S Gigabit Ethernet", 1089 .suspend = genphy_suspend, 1090 .resume = genphy_resume, 1091 .read_mmd = genphy_read_mmd_unsupported, 1092 .write_mmd = genphy_write_mmd_unsupported, 1093 }, 1094 }; 1095 1096 module_phy_driver(realtek_drvs); 1097 1098 static const struct mdio_device_id __maybe_unused realtek_tbl[] = { 1099 { PHY_ID_MATCH_VENDOR(0x001cc800) }, 1100 { } 1101 }; 1102 1103 MODULE_DEVICE_TABLE(mdio, realtek_tbl); 1104