drivers/net/phy/broadcom.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *      drivers/net/phy/broadcom.c
   4  *
   5  *      Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
   6  *      transceivers.
   7  *
   8  *      Copyright (c) 2006  Maciej W. Rozycki
   9  *
  10  *      Inspired by code written by Amy Fong.
  11  */
  12
  13 #include "bcm-phy-lib.h"
  14 #include <linux/module.h>
  15 #include <linux/phy.h>
  16 #include <linux/brcmphy.h>
  17 #include <linux/of.h>
  18
  19 #define BRCM_PHY_MODEL(phydev) \
  20         ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
  21
  22 #define BRCM_PHY_REV(phydev) \
  23         ((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
  24
  25 MODULE_DESCRIPTION("Broadcom PHY driver");
  26 MODULE_AUTHOR("Maciej W. Rozycki");
  27 MODULE_LICENSE("GPL");
  28
  29 static int bcm54xx_config_clock_delay(struct phy_device *phydev);
  30
  31 static int bcm54210e_config_init(struct phy_device *phydev)
  32 {
  33         int val;
  34
  35         bcm54xx_config_clock_delay(phydev);
  36
  37         if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {
  38                 val = phy_read(phydev, MII_CTRL1000);
  39                 val |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;
  40                 phy_write(phydev, MII_CTRL1000, val);
  41         }
  42
  43         return 0;
  44 }
  45
  46 static int bcm54612e_config_init(struct phy_device *phydev)
  47 {
  48         int reg;
  49
  50         bcm54xx_config_clock_delay(phydev);
  51
  52         /* Enable CLK125 MUX on LED4 if ref clock is enabled. */
  53         if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
  54                 int err;
  55
  56                 reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
  57                 err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
  58                                         BCM54612E_LED4_CLK125OUT_EN | reg);
  59
  60                 if (err < 0)
  61                         return err;
  62         }
  63
  64         return 0;
  65 }
  66
  67 static int bcm54xx_config_clock_delay(struct phy_device *phydev)
  68 {
  69         int rc, val;
  70
  71         /* handling PHY's internal RX clock delay */
  72         val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
  73         val |= MII_BCM54XX_AUXCTL_MISC_WREN;
  74         if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
  75             phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
  76                 /* Disable RGMII RXC-RXD skew */
  77                 val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
  78         }
  79         if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
  80             phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
  81                 /* Enable RGMII RXC-RXD skew */
  82                 val |= MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
  83         }
  84         rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
  85                                   val);
  86         if (rc < 0)
  87                 return rc;
  88
  89         /* handling PHY's internal TX clock delay */
  90         val = bcm_phy_read_shadow(phydev, BCM54810_SHD_CLK_CTL);
  91         if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
  92             phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
  93                 /* Disable internal TX clock delay */
  94                 val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
  95         }
  96         if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
  97             phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
  98                 /* Enable internal TX clock delay */
  99                 val |= BCM54810_SHD_CLK_CTL_GTXCLK_EN;
 100         }
 101         rc = bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
 102         if (rc < 0)
 103                 return rc;
 104
 105         return 0;
 106 }
 107
 108 /* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
 109 static int bcm50610_a0_workaround(struct phy_device *phydev)
 110 {
 111         int err;
 112
 113         err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH0,
 114                                 MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN |
 115                                 MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF);
 116         if (err < 0)
 117                 return err;
 118
 119         err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH3,
 120                                 MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ);
 121         if (err < 0)
 122                 return err;
 123
 124         err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75,
 125                                 MII_BCM54XX_EXP_EXP75_VDACCTRL);
 126         if (err < 0)
 127                 return err;
 128
 129         err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP96,
 130                                 MII_BCM54XX_EXP_EXP96_MYST);
 131         if (err < 0)
 132                 return err;
 133
 134         err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP97,
 135                                 MII_BCM54XX_EXP_EXP97_MYST);
 136
 137         return err;
 138 }
 139
 140 static int bcm54xx_phydsp_config(struct phy_device *phydev)
 141 {
 142         int err, err2;
 143
 144         /* Enable the SMDSP clock */
 145         err = bcm54xx_auxctl_write(phydev,
 146                                    MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
 147                                    MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA |
 148                                    MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
 149         if (err < 0)
 150                 return err;
 151
 152         if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
 153             BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) {
 154                 /* Clear bit 9 to fix a phy interop issue. */
 155                 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08,
 156                                         MII_BCM54XX_EXP_EXP08_RJCT_2MHZ);
 157                 if (err < 0)
 158                         goto error;
 159
 160                 if (phydev->drv->phy_id == PHY_ID_BCM50610) {
 161                         err = bcm50610_a0_workaround(phydev);
 162                         if (err < 0)
 163                                 goto error;
 164                 }
 165         }
 166
 167         if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) {
 168                 int val;
 169
 170                 val = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP75);
 171                 if (val < 0)
 172                         goto error;
 173
 174                 val |= MII_BCM54XX_EXP_EXP75_CM_OSC;
 175                 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75, val);
 176         }
 177
 178 error:
 179         /* Disable the SMDSP clock */
 180         err2 = bcm54xx_auxctl_write(phydev,
 181                                     MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
 182                                     MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
 183
 184         /* Return the first error reported. */
 185         return err ? err : err2;
 186 }
 187
 188 static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
 189 {
 190         u32 orig;
 191         int val;
 192         bool clk125en = true;
 193
 194         /* Abort if we are using an untested phy. */
 195         if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 &&
 196             BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 &&
 197             BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M &&
 198             BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54810 &&
 199             BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811)
 200                 return;
 201
 202         val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
 203         if (val < 0)
 204                 return;
 205
 206         orig = val;
 207
 208         if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
 209              BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
 210             BRCM_PHY_REV(phydev) >= 0x3) {
 211                 /*
 212                  * Here, bit 0 _disables_ CLK125 when set.
 213                  * This bit is set by default.
 214                  */
 215                 clk125en = false;
 216         } else {
 217                 if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
 218                         if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811) {
 219                                 /* Here, bit 0 _enables_ CLK125 when set */
 220                                 val &= ~BCM54XX_SHD_SCR3_DEF_CLK125;
 221                         }
 222                         clk125en = false;
 223                 }
 224         }
 225
 226         if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
 227                 val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
 228         else
 229                 val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
 230
 231         if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) {
 232                 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810 ||
 233                     BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54811)
 234                         val |= BCM54810_SHD_SCR3_TRDDAPD;
 235                 else
 236                         val |= BCM54XX_SHD_SCR3_TRDDAPD;
 237         }
 238
 239         if (orig != val)
 240                 bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val);
 241
 242         val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_APD);
 243         if (val < 0)
 244                 return;
 245
 246         orig = val;
 247
 248         if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
 249                 val |= BCM54XX_SHD_APD_EN;
 250         else
 251                 val &= ~BCM54XX_SHD_APD_EN;
 252
 253         if (orig != val)
 254                 bcm_phy_write_shadow(phydev, BCM54XX_SHD_APD, val);
 255 }
 256
 257 static int bcm54xx_config_init(struct phy_device *phydev)
 258 {
 259         int reg, err, val;
 260
 261         reg = phy_read(phydev, MII_BCM54XX_ECR);
 262         if (reg < 0)
 263                 return reg;
 264
 265         /* Mask interrupts globally.  */
 266         reg |= MII_BCM54XX_ECR_IM;
 267         err = phy_write(phydev, MII_BCM54XX_ECR, reg);
 268         if (err < 0)
 269                 return err;
 270
 271         /* Unmask events we are interested in.  */
 272         reg = ~(MII_BCM54XX_INT_DUPLEX |
 273                 MII_BCM54XX_INT_SPEED |
 274                 MII_BCM54XX_INT_LINK);
 275         err = phy_write(phydev, MII_BCM54XX_IMR, reg);
 276         if (err < 0)
 277                 return err;
 278
 279         if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
 280              BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
 281             (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
 282                 bcm_phy_write_shadow(phydev, BCM54XX_SHD_RGMII_MODE, 0);
 283
 284         bcm54xx_adjust_rxrefclk(phydev);
 285
 286         if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54210E) {
 287                 err = bcm54210e_config_init(phydev);
 288                 if (err)
 289                         return err;
 290         } else if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54612E) {
 291                 err = bcm54612e_config_init(phydev);
 292                 if (err)
 293                         return err;
 294         } else if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810) {
 295                 /* For BCM54810, we need to disable BroadR-Reach function */
 296                 val = bcm_phy_read_exp(phydev,
 297                                        BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
 298                 val &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
 299                 err = bcm_phy_write_exp(phydev,
 300                                         BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
 301                                         val);
 302                 if (err < 0)
 303                         return err;
 304         }
 305
 306         bcm54xx_phydsp_config(phydev);
 307
 308         /* Encode link speed into LED1 and LED3 pair (green/amber).
 309          * Also flash these two LEDs on activity. This means configuring
 310          * them for MULTICOLOR and encoding link/activity into them.
 311          */
 312         val = BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_MULTICOLOR1) |
 313                 BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_MULTICOLOR1);
 314         bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, val);
 315
 316         val = BCM_LED_MULTICOLOR_IN_PHASE |
 317                 BCM5482_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
 318                 BCM5482_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
 319         bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
 320
 321         return 0;
 322 }
 323
 324 static int bcm54xx_resume(struct phy_device *phydev)
 325 {
 326         int ret;
 327
 328         /* Writes to register other than BMCR would be ignored
 329          * unless we clear the PDOWN bit first
 330          */
 331         ret = genphy_resume(phydev);
 332         if (ret < 0)
 333                 return ret;
 334
 335         return bcm54xx_config_init(phydev);
 336 }
 337
 338 static int bcm54811_config_init(struct phy_device *phydev)
 339 {
 340         int err, reg;
 341
 342         /* Disable BroadR-Reach function. */
 343         reg = bcm_phy_read_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
 344         reg &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
 345         err = bcm_phy_write_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
 346                                 reg);
 347         if (err < 0)
 348                 return err;
 349
 350         err = bcm54xx_config_init(phydev);
 351
 352         /* Enable CLK125 MUX on LED4 if ref clock is enabled. */
 353         if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
 354                 reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
 355                 err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
 356                                         BCM54612E_LED4_CLK125OUT_EN | reg);
 357                 if (err < 0)
 358                         return err;
 359         }
 360
 361         return err;
 362 }
 363
 364 static int bcm5482_config_init(struct phy_device *phydev)
 365 {
 366         int err, reg;
 367
 368         err = bcm54xx_config_init(phydev);
 369
 370         if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {
 371                 /*
 372                  * Enable secondary SerDes and its use as an LED source
 373                  */
 374                 reg = bcm_phy_read_shadow(phydev, BCM5482_SHD_SSD);
 375                 bcm_phy_write_shadow(phydev, BCM5482_SHD_SSD,
 376                                      reg |
 377                                      BCM5482_SHD_SSD_LEDM |
 378                                      BCM5482_SHD_SSD_EN);
 379
 380                 /*
 381                  * Enable SGMII slave mode and auto-detection
 382                  */
 383                 reg = BCM5482_SSD_SGMII_SLAVE | MII_BCM54XX_EXP_SEL_SSD;
 384                 err = bcm_phy_read_exp(phydev, reg);
 385                 if (err < 0)
 386                         return err;
 387                 err = bcm_phy_write_exp(phydev, reg, err |
 388                                         BCM5482_SSD_SGMII_SLAVE_EN |
 389                                         BCM5482_SSD_SGMII_SLAVE_AD);
 390                 if (err < 0)
 391                         return err;
 392
 393                 /*
 394                  * Disable secondary SerDes powerdown
 395                  */
 396                 reg = BCM5482_SSD_1000BX_CTL | MII_BCM54XX_EXP_SEL_SSD;
 397                 err = bcm_phy_read_exp(phydev, reg);
 398                 if (err < 0)
 399                         return err;
 400                 err = bcm_phy_write_exp(phydev, reg,
 401                                         err & ~BCM5482_SSD_1000BX_CTL_PWRDOWN);
 402                 if (err < 0)
 403                         return err;
 404
 405                 /*
 406                  * Select 1000BASE-X register set (primary SerDes)
 407                  */
 408                 reg = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
 409                 bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE,
 410                                      reg | BCM54XX_SHD_MODE_1000BX);
 411
 412                 /*
 413                  * LED1=ACTIVITYLED, LED3=LINKSPD[2]
 414                  * (Use LED1 as secondary SerDes ACTIVITY LED)
 415                  */
 416                 bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1,
 417                         BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_ACTIVITYLED) |
 418                         BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_LINKSPD2));
 419
 420                 /*
 421                  * Auto-negotiation doesn't seem to work quite right
 422                  * in this mode, so we disable it and force it to the
 423                  * right speed/duplex setting.  Only 'link status'
 424                  * is important.
 425                  */
 426                 phydev->autoneg = AUTONEG_DISABLE;
 427                 phydev->speed = SPEED_1000;
 428                 phydev->duplex = DUPLEX_FULL;
 429         }
 430
 431         return err;
 432 }
 433
 434 static int bcm5482_read_status(struct phy_device *phydev)
 435 {
 436         int err;
 437
 438         err = genphy_read_status(phydev);
 439
 440         if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {
 441                 /*
 442                  * Only link status matters for 1000Base-X mode, so force
 443                  * 1000 Mbit/s full-duplex status
 444                  */
 445                 if (phydev->link) {
 446                         phydev->speed = SPEED_1000;
 447                         phydev->duplex = DUPLEX_FULL;
 448                 }
 449         }
 450
 451         return err;
 452 }
 453
 454 static int bcm5481_config_aneg(struct phy_device *phydev)
 455 {
 456         struct device_node *np = phydev->mdio.dev.of_node;
 457         int ret;
 458
 459         /* Aneg firstly. */
 460         ret = genphy_config_aneg(phydev);
 461
 462         /* Then we can set up the delay. */
 463         bcm54xx_config_clock_delay(phydev);
 464
 465         if (of_property_read_bool(np, "enet-phy-lane-swap")) {
 466                 /* Lane Swap - Undocumented register...magic! */
 467                 ret = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_SEL_ER + 0x9,
 468                                         0x11B);
 469                 if (ret < 0)
 470                         return ret;
 471         }
 472
 473         return ret;
 474 }
 475
 476 static int bcm54616s_probe(struct phy_device *phydev)
 477 {
 478         int val, intf_sel;
 479
 480         val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
 481         if (val < 0)
 482                 return val;
 483
 484         /* The PHY is strapped in RGMII-fiber mode when INTERF_SEL[1:0]
 485          * is 01b, and the link between PHY and its link partner can be
 486          * either 1000Base-X or 100Base-FX.
 487          * RGMII-1000Base-X is properly supported, but RGMII-100Base-FX
 488          * support is still missing as of now.
 489          */
 490         intf_sel = (val & BCM54XX_SHD_INTF_SEL_MASK) >> 1;
 491         if (intf_sel == 1) {
 492                 val = bcm_phy_read_shadow(phydev, BCM54616S_SHD_100FX_CTRL);
 493                 if (val < 0)
 494                         return val;
 495
 496                 /* Bit 0 of the SerDes 100-FX Control register, when set
 497                  * to 1, sets the MII/RGMII -> 100BASE-FX configuration.
 498                  * When this bit is set to 0, it sets the GMII/RGMII ->
 499                  * 1000BASE-X configuration.
 500                  */
 501                 if (!(val & BCM54616S_100FX_MODE))
 502                         phydev->dev_flags |= PHY_BCM_FLAGS_MODE_1000BX;
 503         }
 504
 505         return 0;
 506 }
 507
 508 static int bcm54616s_config_aneg(struct phy_device *phydev)
 509 {
 510         int ret;
 511
 512         /* Aneg firstly. */
 513         if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)
 514                 ret = genphy_c37_config_aneg(phydev);
 515         else
 516                 ret = genphy_config_aneg(phydev);
 517
 518         /* Then we can set up the delay. */
 519         bcm54xx_config_clock_delay(phydev);
 520
 521         return ret;
 522 }
 523
 524 static int bcm54616s_read_status(struct phy_device *phydev)
 525 {
 526         int err;
 527
 528         if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX)
 529                 err = genphy_c37_read_status(phydev);
 530         else
 531                 err = genphy_read_status(phydev);
 532
 533         return err;
 534 }
 535
 536 static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
 537 {
 538         int val;
 539
 540         val = phy_read(phydev, reg);
 541         if (val < 0)
 542                 return val;
 543
 544         return phy_write(phydev, reg, val | set);
 545 }
 546
 547 static int brcm_fet_config_init(struct phy_device *phydev)
 548 {
 549         int reg, err, err2, brcmtest;
 550
 551         /* Reset the PHY to bring it to a known state. */
 552         err = phy_write(phydev, MII_BMCR, BMCR_RESET);
 553         if (err < 0)
 554                 return err;
 555
 556         reg = phy_read(phydev, MII_BRCM_FET_INTREG);
 557         if (reg < 0)
 558                 return reg;
 559
 560         /* Unmask events we are interested in and mask interrupts globally. */
 561         reg = MII_BRCM_FET_IR_DUPLEX_EN |
 562               MII_BRCM_FET_IR_SPEED_EN |
 563               MII_BRCM_FET_IR_LINK_EN |
 564               MII_BRCM_FET_IR_ENABLE |
 565               MII_BRCM_FET_IR_MASK;
 566
 567         err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
 568         if (err < 0)
 569                 return err;
 570
 571         /* Enable shadow register access */
 572         brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
 573         if (brcmtest < 0)
 574                 return brcmtest;
 575
 576         reg = brcmtest | MII_BRCM_FET_BT_SRE;
 577
 578         err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg);
 579         if (err < 0)
 580                 return err;
 581
 582         /* Set the LED mode */
 583         reg = phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4);
 584         if (reg < 0) {
 585                 err = reg;
 586                 goto done;
 587         }
 588
 589         reg &= ~MII_BRCM_FET_SHDW_AM4_LED_MASK;
 590         reg |= MII_BRCM_FET_SHDW_AM4_LED_MODE1;
 591
 592         err = phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg);
 593         if (err < 0)
 594                 goto done;
 595
 596         /* Enable auto MDIX */
 597         err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
 598                                        MII_BRCM_FET_SHDW_MC_FAME);
 599         if (err < 0)
 600                 goto done;
 601
 602         if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {
 603                 /* Enable auto power down */
 604                 err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
 605                                                MII_BRCM_FET_SHDW_AS2_APDE);
 606         }
 607
 608 done:
 609         /* Disable shadow register access */
 610         err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest);
 611         if (!err)
 612                 err = err2;
 613
 614         return err;
 615 }
 616
 617 static int brcm_fet_ack_interrupt(struct phy_device *phydev)
 618 {
 619         int reg;
 620
 621         /* Clear pending interrupts.  */
 622         reg = phy_read(phydev, MII_BRCM_FET_INTREG);
 623         if (reg < 0)
 624                 return reg;
 625
 626         return 0;
 627 }
 628
 629 static int brcm_fet_config_intr(struct phy_device *phydev)
 630 {
 631         int reg, err;
 632
 633         reg = phy_read(phydev, MII_BRCM_FET_INTREG);
 634         if (reg < 0)
 635                 return reg;
 636
 637         if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 638                 err = brcm_fet_ack_interrupt(phydev);
 639                 if (err)
 640                         return err;
 641
 642                 reg &= ~MII_BRCM_FET_IR_MASK;
 643                 err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
 644         } else {
 645                 reg |= MII_BRCM_FET_IR_MASK;
 646                 err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
 647                 if (err)
 648                         return err;
 649
 650                 err = brcm_fet_ack_interrupt(phydev);
 651         }
 652
 653         return err;
 654 }
 655
 656 static irqreturn_t brcm_fet_handle_interrupt(struct phy_device *phydev)
 657 {
 658         int irq_status;
 659
 660         irq_status = phy_read(phydev, MII_BRCM_FET_INTREG);
 661         if (irq_status < 0) {
 662                 phy_error(phydev);
 663                 return IRQ_NONE;
 664         }
 665
 666         if (irq_status == 0)
 667                 return IRQ_NONE;
 668
 669         phy_trigger_machine(phydev);
 670
 671         return IRQ_HANDLED;
 672 }
 673
 674 struct bcm53xx_phy_priv {
 675         u64     *stats;
 676 };
 677
 678 static int bcm53xx_phy_probe(struct phy_device *phydev)
 679 {
 680         struct bcm53xx_phy_priv *priv;
 681
 682         priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
 683         if (!priv)
 684                 return -ENOMEM;
 685
 686         phydev->priv = priv;
 687
 688         priv->stats = devm_kcalloc(&phydev->mdio.dev,
 689                                    bcm_phy_get_sset_count(phydev), sizeof(u64),
 690                                    GFP_KERNEL);
 691         if (!priv->stats)
 692                 return -ENOMEM;
 693
 694         return 0;
 695 }
 696
 697 static void bcm53xx_phy_get_stats(struct phy_device *phydev,
 698                                   struct ethtool_stats *stats, u64 *data)
 699 {
 700         struct bcm53xx_phy_priv *priv = phydev->priv;
 701
 702         bcm_phy_get_stats(phydev, priv->stats, stats, data);
 703 }
 704
 705 static struct phy_driver broadcom_drivers[] = {
 706 {
 707         .phy_id         = PHY_ID_BCM5411,
 708         .phy_id_mask    = 0xfffffff0,
 709         .name           = "Broadcom BCM5411",
 710         /* PHY_GBIT_FEATURES */
 711         .config_init    = bcm54xx_config_init,
 712         .config_intr    = bcm_phy_config_intr,
 713         .handle_interrupt = bcm_phy_handle_interrupt,
 714 }, {
 715         .phy_id         = PHY_ID_BCM5421,
 716         .phy_id_mask    = 0xfffffff0,
 717         .name           = "Broadcom BCM5421",
 718         /* PHY_GBIT_FEATURES */
 719         .config_init    = bcm54xx_config_init,
 720         .config_intr    = bcm_phy_config_intr,
 721         .handle_interrupt = bcm_phy_handle_interrupt,
 722 }, {
 723         .phy_id         = PHY_ID_BCM54210E,
 724         .phy_id_mask    = 0xfffffff0,
 725         .name           = "Broadcom BCM54210E",
 726         /* PHY_GBIT_FEATURES */
 727         .config_init    = bcm54xx_config_init,
 728         .config_intr    = bcm_phy_config_intr,
 729         .handle_interrupt = bcm_phy_handle_interrupt,
 730 }, {
 731         .phy_id         = PHY_ID_BCM5461,
 732         .phy_id_mask    = 0xfffffff0,
 733         .name           = "Broadcom BCM5461",
 734         /* PHY_GBIT_FEATURES */
 735         .config_init    = bcm54xx_config_init,
 736         .config_intr    = bcm_phy_config_intr,
 737         .handle_interrupt = bcm_phy_handle_interrupt,
 738 }, {
 739         .phy_id         = PHY_ID_BCM54612E,
 740         .phy_id_mask    = 0xfffffff0,
 741         .name           = "Broadcom BCM54612E",
 742         /* PHY_GBIT_FEATURES */
 743         .config_init    = bcm54xx_config_init,
 744         .config_intr    = bcm_phy_config_intr,
 745         .handle_interrupt = bcm_phy_handle_interrupt,
 746 }, {
 747         .phy_id         = PHY_ID_BCM54616S,
 748         .phy_id_mask    = 0xfffffff0,
 749         .name           = "Broadcom BCM54616S",
 750         /* PHY_GBIT_FEATURES */
 751         .config_init    = bcm54xx_config_init,
 752         .config_aneg    = bcm54616s_config_aneg,
 753         .config_intr    = bcm_phy_config_intr,
 754         .handle_interrupt = bcm_phy_handle_interrupt,
 755         .read_status    = bcm54616s_read_status,
 756         .probe          = bcm54616s_probe,
 757 }, {
 758         .phy_id         = PHY_ID_BCM5464,
 759         .phy_id_mask    = 0xfffffff0,
 760         .name           = "Broadcom BCM5464",
 761         /* PHY_GBIT_FEATURES */
 762         .config_init    = bcm54xx_config_init,
 763         .config_intr    = bcm_phy_config_intr,
 764         .handle_interrupt = bcm_phy_handle_interrupt,
 765         .suspend        = genphy_suspend,
 766         .resume         = genphy_resume,
 767 }, {
 768         .phy_id         = PHY_ID_BCM5481,
 769         .phy_id_mask    = 0xfffffff0,
 770         .name           = "Broadcom BCM5481",
 771         /* PHY_GBIT_FEATURES */
 772         .config_init    = bcm54xx_config_init,
 773         .config_aneg    = bcm5481_config_aneg,
 774         .config_intr    = bcm_phy_config_intr,
 775         .handle_interrupt = bcm_phy_handle_interrupt,
 776 }, {
 777         .phy_id         = PHY_ID_BCM54810,
 778         .phy_id_mask    = 0xfffffff0,
 779         .name           = "Broadcom BCM54810",
 780         /* PHY_GBIT_FEATURES */
 781         .config_init    = bcm54xx_config_init,
 782         .config_aneg    = bcm5481_config_aneg,
 783         .config_intr    = bcm_phy_config_intr,
 784         .handle_interrupt = bcm_phy_handle_interrupt,
 785         .suspend        = genphy_suspend,
 786         .resume         = bcm54xx_resume,
 787 }, {
 788         .phy_id         = PHY_ID_BCM54811,
 789         .phy_id_mask    = 0xfffffff0,
 790         .name           = "Broadcom BCM54811",
 791         /* PHY_GBIT_FEATURES */
 792         .config_init    = bcm54811_config_init,
 793         .config_aneg    = bcm5481_config_aneg,
 794         .config_intr    = bcm_phy_config_intr,
 795         .handle_interrupt = bcm_phy_handle_interrupt,
 796         .suspend        = genphy_suspend,
 797         .resume         = bcm54xx_resume,
 798 }, {
 799         .phy_id         = PHY_ID_BCM5482,
 800         .phy_id_mask    = 0xfffffff0,
 801         .name           = "Broadcom BCM5482",
 802         /* PHY_GBIT_FEATURES */
 803         .config_init    = bcm5482_config_init,
 804         .read_status    = bcm5482_read_status,
 805         .config_intr    = bcm_phy_config_intr,
 806         .handle_interrupt = bcm_phy_handle_interrupt,
 807 }, {
 808         .phy_id         = PHY_ID_BCM50610,
 809         .phy_id_mask    = 0xfffffff0,
 810         .name           = "Broadcom BCM50610",
 811         /* PHY_GBIT_FEATURES */
 812         .config_init    = bcm54xx_config_init,
 813         .config_intr    = bcm_phy_config_intr,
 814         .handle_interrupt = bcm_phy_handle_interrupt,
 815 }, {
 816         .phy_id         = PHY_ID_BCM50610M,
 817         .phy_id_mask    = 0xfffffff0,
 818         .name           = "Broadcom BCM50610M",
 819         /* PHY_GBIT_FEATURES */
 820         .config_init    = bcm54xx_config_init,
 821         .config_intr    = bcm_phy_config_intr,
 822         .handle_interrupt = bcm_phy_handle_interrupt,
 823 }, {
 824         .phy_id         = PHY_ID_BCM57780,
 825         .phy_id_mask    = 0xfffffff0,
 826         .name           = "Broadcom BCM57780",
 827         /* PHY_GBIT_FEATURES */
 828         .config_init    = bcm54xx_config_init,
 829         .config_intr    = bcm_phy_config_intr,
 830         .handle_interrupt = bcm_phy_handle_interrupt,
 831 }, {
 832         .phy_id         = PHY_ID_BCMAC131,
 833         .phy_id_mask    = 0xfffffff0,
 834         .name           = "Broadcom BCMAC131",
 835         /* PHY_BASIC_FEATURES */
 836         .config_init    = brcm_fet_config_init,
 837         .config_intr    = brcm_fet_config_intr,
 838         .handle_interrupt = brcm_fet_handle_interrupt,
 839 }, {
 840         .phy_id         = PHY_ID_BCM5241,
 841         .phy_id_mask    = 0xfffffff0,
 842         .name           = "Broadcom BCM5241",
 843         /* PHY_BASIC_FEATURES */
 844         .config_init    = brcm_fet_config_init,
 845         .config_intr    = brcm_fet_config_intr,
 846         .handle_interrupt = brcm_fet_handle_interrupt,
 847 }, {
 848         .phy_id         = PHY_ID_BCM5395,
 849         .phy_id_mask    = 0xfffffff0,
 850         .name           = "Broadcom BCM5395",
 851         .flags          = PHY_IS_INTERNAL,
 852         /* PHY_GBIT_FEATURES */
 853         .get_sset_count = bcm_phy_get_sset_count,
 854         .get_strings    = bcm_phy_get_strings,
 855         .get_stats      = bcm53xx_phy_get_stats,
 856         .probe          = bcm53xx_phy_probe,
 857 }, {
 858         .phy_id         = PHY_ID_BCM53125,
 859         .phy_id_mask    = 0xfffffff0,
 860         .name           = "Broadcom BCM53125",
 861         .flags          = PHY_IS_INTERNAL,
 862         /* PHY_GBIT_FEATURES */
 863         .get_sset_count = bcm_phy_get_sset_count,
 864         .get_strings    = bcm_phy_get_strings,
 865         .get_stats      = bcm53xx_phy_get_stats,
 866         .probe          = bcm53xx_phy_probe,
 867         .config_init    = bcm54xx_config_init,
 868         .config_intr    = bcm_phy_config_intr,
 869         .handle_interrupt = bcm_phy_handle_interrupt,
 870 }, {
 871         .phy_id         = PHY_ID_BCM89610,
 872         .phy_id_mask    = 0xfffffff0,
 873         .name           = "Broadcom BCM89610",
 874         /* PHY_GBIT_FEATURES */
 875         .config_init    = bcm54xx_config_init,
 876         .config_intr    = bcm_phy_config_intr,
 877         .handle_interrupt = bcm_phy_handle_interrupt,
 878 } };
 879
 880 module_phy_driver(broadcom_drivers);
 881
 882 static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
 883         { PHY_ID_BCM5411, 0xfffffff0 },
 884         { PHY_ID_BCM5421, 0xfffffff0 },
 885         { PHY_ID_BCM54210E, 0xfffffff0 },
 886         { PHY_ID_BCM5461, 0xfffffff0 },
 887         { PHY_ID_BCM54612E, 0xfffffff0 },
 888         { PHY_ID_BCM54616S, 0xfffffff0 },
 889         { PHY_ID_BCM5464, 0xfffffff0 },
 890         { PHY_ID_BCM5481, 0xfffffff0 },
 891         { PHY_ID_BCM54810, 0xfffffff0 },
 892         { PHY_ID_BCM54811, 0xfffffff0 },
 893         { PHY_ID_BCM5482, 0xfffffff0 },
 894         { PHY_ID_BCM50610, 0xfffffff0 },
 895         { PHY_ID_BCM50610M, 0xfffffff0 },
 896         { PHY_ID_BCM57780, 0xfffffff0 },
 897         { PHY_ID_BCMAC131, 0xfffffff0 },
 898         { PHY_ID_BCM5241, 0xfffffff0 },
 899         { PHY_ID_BCM5395, 0xfffffff0 },
 900         { PHY_ID_BCM53125, 0xfffffff0 },
 901         { PHY_ID_BCM89610, 0xfffffff0 },
 902         { }
 903 };
 904
 905 MODULE_DEVICE_TABLE(mdio, broadcom_tbl);