drivers/net/phy/dp83822.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Driver for the Texas Instruments DP83822, DP83825 and DP83826 PHYs.
   3  *
   4  * Copyright (C) 2017 Texas Instruments Inc.
   5  */
   6
   7 #include <linux/ethtool.h>
   8 #include <linux/etherdevice.h>
   9 #include <linux/kernel.h>
  10 #include <linux/mii.h>
  11 #include <linux/module.h>
  12 #include <linux/of.h>
  13 #include <linux/phy.h>
  14 #include <linux/netdevice.h>
  15
  16 #define DP83822_PHY_ID          0x2000a240
  17 #define DP83825S_PHY_ID         0x2000a140
  18 #define DP83825I_PHY_ID         0x2000a150
  19 #define DP83825CM_PHY_ID        0x2000a160
  20 #define DP83825CS_PHY_ID        0x2000a170
  21 #define DP83826C_PHY_ID         0x2000a130
  22 #define DP83826NC_PHY_ID        0x2000a110
  23
  24 #define DP83822_DEVADDR         0x1f
  25
  26 #define MII_DP83822_CTRL_2      0x0a
  27 #define MII_DP83822_PHYSTS      0x10
  28 #define MII_DP83822_PHYSCR      0x11
  29 #define MII_DP83822_MISR1       0x12
  30 #define MII_DP83822_MISR2       0x13
  31 #define MII_DP83822_FCSCR       0x14
  32 #define MII_DP83822_RCSR        0x17
  33 #define MII_DP83822_RESET_CTRL  0x1f
  34 #define MII_DP83822_GENCFG      0x465
  35 #define MII_DP83822_SOR1        0x467
  36
  37 /* GENCFG */
  38 #define DP83822_SIG_DET_LOW     BIT(0)
  39
  40 /* Control Register 2 bits */
  41 #define DP83822_FX_ENABLE       BIT(14)
  42
  43 #define DP83822_HW_RESET        BIT(15)
  44 #define DP83822_SW_RESET        BIT(14)
  45
  46 /* PHY STS bits */
  47 #define DP83822_PHYSTS_DUPLEX                   BIT(2)
  48 #define DP83822_PHYSTS_10                       BIT(1)
  49 #define DP83822_PHYSTS_LINK                     BIT(0)
  50
  51 /* PHYSCR Register Fields */
  52 #define DP83822_PHYSCR_INT_OE           BIT(0) /* Interrupt Output Enable */
  53 #define DP83822_PHYSCR_INTEN            BIT(1) /* Interrupt Enable */
  54
  55 /* MISR1 bits */
  56 #define DP83822_RX_ERR_HF_INT_EN        BIT(0)
  57 #define DP83822_FALSE_CARRIER_HF_INT_EN BIT(1)
  58 #define DP83822_ANEG_COMPLETE_INT_EN    BIT(2)
  59 #define DP83822_DUP_MODE_CHANGE_INT_EN  BIT(3)
  60 #define DP83822_SPEED_CHANGED_INT_EN    BIT(4)
  61 #define DP83822_LINK_STAT_INT_EN        BIT(5)
  62 #define DP83822_ENERGY_DET_INT_EN       BIT(6)
  63 #define DP83822_LINK_QUAL_INT_EN        BIT(7)
  64
  65 /* MISR2 bits */
  66 #define DP83822_JABBER_DET_INT_EN       BIT(0)
  67 #define DP83822_WOL_PKT_INT_EN          BIT(1)
  68 #define DP83822_SLEEP_MODE_INT_EN       BIT(2)
  69 #define DP83822_MDI_XOVER_INT_EN        BIT(3)
  70 #define DP83822_LB_FIFO_INT_EN          BIT(4)
  71 #define DP83822_PAGE_RX_INT_EN          BIT(5)
  72 #define DP83822_ANEG_ERR_INT_EN         BIT(6)
  73 #define DP83822_EEE_ERROR_CHANGE_INT_EN BIT(7)
  74
  75 /* INT_STAT1 bits */
  76 #define DP83822_WOL_INT_EN      BIT(4)
  77 #define DP83822_WOL_INT_STAT    BIT(12)
  78
  79 #define MII_DP83822_RXSOP1      0x04a5
  80 #define MII_DP83822_RXSOP2      0x04a6
  81 #define MII_DP83822_RXSOP3      0x04a7
  82
  83 /* WoL Registers */
  84 #define MII_DP83822_WOL_CFG     0x04a0
  85 #define MII_DP83822_WOL_STAT    0x04a1
  86 #define MII_DP83822_WOL_DA1     0x04a2
  87 #define MII_DP83822_WOL_DA2     0x04a3
  88 #define MII_DP83822_WOL_DA3     0x04a4
  89
  90 /* WoL bits */
  91 #define DP83822_WOL_MAGIC_EN    BIT(0)
  92 #define DP83822_WOL_SECURE_ON   BIT(5)
  93 #define DP83822_WOL_EN          BIT(7)
  94 #define DP83822_WOL_INDICATION_SEL BIT(8)
  95 #define DP83822_WOL_CLR_INDICATION BIT(11)
  96
  97 /* RCSR bits */
  98 #define DP83822_RGMII_MODE_EN   BIT(9)
  99 #define DP83822_RX_CLK_SHIFT    BIT(12)
 100 #define DP83822_TX_CLK_SHIFT    BIT(11)
 101
 102 /* SOR1 mode */
 103 #define DP83822_STRAP_MODE1     0
 104 #define DP83822_STRAP_MODE2     BIT(0)
 105 #define DP83822_STRAP_MODE3     BIT(1)
 106 #define DP83822_STRAP_MODE4     GENMASK(1, 0)
 107
 108 #define DP83822_COL_STRAP_MASK  GENMASK(11, 10)
 109 #define DP83822_COL_SHIFT       10
 110 #define DP83822_RX_ER_STR_MASK  GENMASK(9, 8)
 111 #define DP83822_RX_ER_SHIFT     8
 112
 113 #define MII_DP83822_FIBER_ADVERTISE    (ADVERTISED_TP | ADVERTISED_MII | \
 114                                         ADVERTISED_FIBRE | \
 115                                         ADVERTISED_Pause | ADVERTISED_Asym_Pause)
 116
 117 struct dp83822_private {
 118         bool fx_signal_det_low;
 119         int fx_enabled;
 120         u16 fx_sd_enable;
 121 };
 122
 123 static int dp83822_set_wol(struct phy_device *phydev,
 124                            struct ethtool_wolinfo *wol)
 125 {
 126         struct net_device *ndev = phydev->attached_dev;
 127         u16 value;
 128         const u8 *mac;
 129
 130         if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {
 131                 mac = (const u8 *)ndev->dev_addr;
 132
 133                 if (!is_valid_ether_addr(mac))
 134                         return -EINVAL;
 135
 136                 /* MAC addresses start with byte 5, but stored in mac[0].
 137                  * 822 PHYs store bytes 4|5, 2|3, 0|1
 138                  */
 139                 phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA1,
 140                               (mac[1] << 8) | mac[0]);
 141                 phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA2,
 142                               (mac[3] << 8) | mac[2]);
 143                 phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA3,
 144                               (mac[5] << 8) | mac[4]);
 145
 146                 value = phy_read_mmd(phydev, DP83822_DEVADDR,
 147                                      MII_DP83822_WOL_CFG);
 148                 if (wol->wolopts & WAKE_MAGIC)
 149                         value |= DP83822_WOL_MAGIC_EN;
 150                 else
 151                         value &= ~DP83822_WOL_MAGIC_EN;
 152
 153                 if (wol->wolopts & WAKE_MAGICSECURE) {
 154                         phy_write_mmd(phydev, DP83822_DEVADDR,
 155                                       MII_DP83822_RXSOP1,
 156                                       (wol->sopass[1] << 8) | wol->sopass[0]);
 157                         phy_write_mmd(phydev, DP83822_DEVADDR,
 158                                       MII_DP83822_RXSOP2,
 159                                       (wol->sopass[3] << 8) | wol->sopass[2]);
 160                         phy_write_mmd(phydev, DP83822_DEVADDR,
 161                                       MII_DP83822_RXSOP3,
 162                                       (wol->sopass[5] << 8) | wol->sopass[4]);
 163                         value |= DP83822_WOL_SECURE_ON;
 164                 } else {
 165                         value &= ~DP83822_WOL_SECURE_ON;
 166                 }
 167
 168                 /* Clear any pending WoL interrupt */
 169                 phy_read(phydev, MII_DP83822_MISR2);
 170
 171                 value |= DP83822_WOL_EN | DP83822_WOL_INDICATION_SEL |
 172                          DP83822_WOL_CLR_INDICATION;
 173
 174                 return phy_write_mmd(phydev, DP83822_DEVADDR,
 175                                      MII_DP83822_WOL_CFG, value);
 176         } else {
 177                 return phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
 178                                           MII_DP83822_WOL_CFG, DP83822_WOL_EN);
 179         }
 180 }
 181
 182 static void dp83822_get_wol(struct phy_device *phydev,
 183                             struct ethtool_wolinfo *wol)
 184 {
 185         int value;
 186         u16 sopass_val;
 187
 188         wol->supported = (WAKE_MAGIC | WAKE_MAGICSECURE);
 189         wol->wolopts = 0;
 190
 191         value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG);
 192
 193         if (value & DP83822_WOL_MAGIC_EN)
 194                 wol->wolopts |= WAKE_MAGIC;
 195
 196         if (value & DP83822_WOL_SECURE_ON) {
 197                 sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR,
 198                                           MII_DP83822_RXSOP1);
 199                 wol->sopass[0] = (sopass_val & 0xff);
 200                 wol->sopass[1] = (sopass_val >> 8);
 201
 202                 sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR,
 203                                           MII_DP83822_RXSOP2);
 204                 wol->sopass[2] = (sopass_val & 0xff);
 205                 wol->sopass[3] = (sopass_val >> 8);
 206
 207                 sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR,
 208                                           MII_DP83822_RXSOP3);
 209                 wol->sopass[4] = (sopass_val & 0xff);
 210                 wol->sopass[5] = (sopass_val >> 8);
 211
 212                 wol->wolopts |= WAKE_MAGICSECURE;
 213         }
 214
 215         /* WoL is not enabled so set wolopts to 0 */
 216         if (!(value & DP83822_WOL_EN))
 217                 wol->wolopts = 0;
 218 }
 219
 220 static int dp83822_config_intr(struct phy_device *phydev)
 221 {
 222         struct dp83822_private *dp83822 = phydev->priv;
 223         int misr_status;
 224         int physcr_status;
 225         int err;
 226
 227         if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 228                 misr_status = phy_read(phydev, MII_DP83822_MISR1);
 229                 if (misr_status < 0)
 230                         return misr_status;
 231
 232                 misr_status |= (DP83822_LINK_STAT_INT_EN |
 233                                 DP83822_ENERGY_DET_INT_EN |
 234                                 DP83822_LINK_QUAL_INT_EN);
 235
 236                 if (!dp83822->fx_enabled)
 237                         misr_status |= DP83822_ANEG_COMPLETE_INT_EN |
 238                                        DP83822_DUP_MODE_CHANGE_INT_EN |
 239                                        DP83822_SPEED_CHANGED_INT_EN;
 240
 241
 242                 err = phy_write(phydev, MII_DP83822_MISR1, misr_status);
 243                 if (err < 0)
 244                         return err;
 245
 246                 misr_status = phy_read(phydev, MII_DP83822_MISR2);
 247                 if (misr_status < 0)
 248                         return misr_status;
 249
 250                 misr_status |= (DP83822_JABBER_DET_INT_EN |
 251                                 DP83822_SLEEP_MODE_INT_EN |
 252                                 DP83822_LB_FIFO_INT_EN |
 253                                 DP83822_PAGE_RX_INT_EN |
 254                                 DP83822_EEE_ERROR_CHANGE_INT_EN);
 255
 256                 if (!dp83822->fx_enabled)
 257                         misr_status |= DP83822_MDI_XOVER_INT_EN |
 258                                        DP83822_ANEG_ERR_INT_EN |
 259                                        DP83822_WOL_PKT_INT_EN;
 260
 261                 err = phy_write(phydev, MII_DP83822_MISR2, misr_status);
 262                 if (err < 0)
 263                         return err;
 264
 265                 physcr_status = phy_read(phydev, MII_DP83822_PHYSCR);
 266                 if (physcr_status < 0)
 267                         return physcr_status;
 268
 269                 physcr_status |= DP83822_PHYSCR_INT_OE | DP83822_PHYSCR_INTEN;
 270
 271         } else {
 272                 err = phy_write(phydev, MII_DP83822_MISR1, 0);
 273                 if (err < 0)
 274                         return err;
 275
 276                 err = phy_write(phydev, MII_DP83822_MISR2, 0);
 277                 if (err < 0)
 278                         return err;
 279
 280                 physcr_status = phy_read(phydev, MII_DP83822_PHYSCR);
 281                 if (physcr_status < 0)
 282                         return physcr_status;
 283
 284                 physcr_status &= ~DP83822_PHYSCR_INTEN;
 285         }
 286
 287         return phy_write(phydev, MII_DP83822_PHYSCR, physcr_status);
 288 }
 289
 290 static irqreturn_t dp83822_handle_interrupt(struct phy_device *phydev)
 291 {
 292         bool trigger_machine = false;
 293         int irq_status;
 294
 295         /* The MISR1 and MISR2 registers are holding the interrupt status in
 296          * the upper half (15:8), while the lower half (7:0) is used for
 297          * controlling the interrupt enable state of those individual interrupt
 298          * sources. To determine the possible interrupt sources, just read the
 299          * MISR* register and use it directly to know which interrupts have
 300          * been enabled previously or not.
 301          */
 302         irq_status = phy_read(phydev, MII_DP83822_MISR1);
 303         if (irq_status < 0) {
 304                 phy_error(phydev);
 305                 return IRQ_NONE;
 306         }
 307         if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
 308                 trigger_machine = true;
 309
 310         irq_status = phy_read(phydev, MII_DP83822_MISR2);
 311         if (irq_status < 0) {
 312                 phy_error(phydev);
 313                 return IRQ_NONE;
 314         }
 315         if (irq_status & ((irq_status & GENMASK(7, 0)) << 8))
 316                 trigger_machine = true;
 317
 318         if (!trigger_machine)
 319                 return IRQ_NONE;
 320
 321         phy_trigger_machine(phydev);
 322
 323         return IRQ_HANDLED;
 324 }
 325
 326 static int dp8382x_disable_wol(struct phy_device *phydev)
 327 {
 328         return phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG,
 329                                   DP83822_WOL_EN | DP83822_WOL_MAGIC_EN |
 330                                   DP83822_WOL_SECURE_ON);
 331 }
 332
 333 static int dp83822_read_status(struct phy_device *phydev)
 334 {
 335         struct dp83822_private *dp83822 = phydev->priv;
 336         int status = phy_read(phydev, MII_DP83822_PHYSTS);
 337         int ctrl2;
 338         int ret;
 339
 340         if (dp83822->fx_enabled) {
 341                 if (status & DP83822_PHYSTS_LINK) {
 342                         phydev->speed = SPEED_UNKNOWN;
 343                         phydev->duplex = DUPLEX_UNKNOWN;
 344                 } else {
 345                         ctrl2 = phy_read(phydev, MII_DP83822_CTRL_2);
 346                         if (ctrl2 < 0)
 347                                 return ctrl2;
 348
 349                         if (!(ctrl2 & DP83822_FX_ENABLE)) {
 350                                 ret = phy_write(phydev, MII_DP83822_CTRL_2,
 351                                                 DP83822_FX_ENABLE | ctrl2);
 352                                 if (ret < 0)
 353                                         return ret;
 354                         }
 355                 }
 356         }
 357
 358         ret = genphy_read_status(phydev);
 359         if (ret)
 360                 return ret;
 361
 362         if (status < 0)
 363                 return status;
 364
 365         if (status & DP83822_PHYSTS_DUPLEX)
 366                 phydev->duplex = DUPLEX_FULL;
 367         else
 368                 phydev->duplex = DUPLEX_HALF;
 369
 370         if (status & DP83822_PHYSTS_10)
 371                 phydev->speed = SPEED_10;
 372         else
 373                 phydev->speed = SPEED_100;
 374
 375         return 0;
 376 }
 377
 378 static int dp83822_config_init(struct phy_device *phydev)
 379 {
 380         struct dp83822_private *dp83822 = phydev->priv;
 381         struct device *dev = &phydev->mdio.dev;
 382         int rgmii_delay;
 383         s32 rx_int_delay;
 384         s32 tx_int_delay;
 385         int err = 0;
 386         int bmcr;
 387
 388         if (phy_interface_is_rgmii(phydev)) {
 389                 rx_int_delay = phy_get_internal_delay(phydev, dev, NULL, 0,
 390                                                       true);
 391
 392                 if (rx_int_delay <= 0)
 393                         rgmii_delay = 0;
 394                 else
 395                         rgmii_delay = DP83822_RX_CLK_SHIFT;
 396
 397                 tx_int_delay = phy_get_internal_delay(phydev, dev, NULL, 0,
 398                                                       false);
 399                 if (tx_int_delay <= 0)
 400                         rgmii_delay &= ~DP83822_TX_CLK_SHIFT;
 401                 else
 402                         rgmii_delay |= DP83822_TX_CLK_SHIFT;
 403
 404                 if (rgmii_delay) {
 405                         err = phy_set_bits_mmd(phydev, DP83822_DEVADDR,
 406                                                MII_DP83822_RCSR, rgmii_delay);
 407                         if (err)
 408                                 return err;
 409                 }
 410
 411                 phy_set_bits_mmd(phydev, DP83822_DEVADDR,
 412                                         MII_DP83822_RCSR, DP83822_RGMII_MODE_EN);
 413         } else {
 414                 phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
 415                                         MII_DP83822_RCSR, DP83822_RGMII_MODE_EN);
 416         }
 417
 418         if (dp83822->fx_enabled) {
 419                 err = phy_modify(phydev, MII_DP83822_CTRL_2,
 420                                  DP83822_FX_ENABLE, 1);
 421                 if (err < 0)
 422                         return err;
 423
 424                 /* Only allow advertising what this PHY supports */
 425                 linkmode_and(phydev->advertising, phydev->advertising,
 426                              phydev->supported);
 427
 428                 linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
 429                                  phydev->supported);
 430                 linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
 431                                  phydev->advertising);
 432                 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT,
 433                                  phydev->supported);
 434                 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT,
 435                                  phydev->supported);
 436                 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT,
 437                                  phydev->advertising);
 438                 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT,
 439                                  phydev->advertising);
 440
 441                 /* Auto neg is not supported in fiber mode */
 442                 bmcr = phy_read(phydev, MII_BMCR);
 443                 if (bmcr < 0)
 444                         return bmcr;
 445
 446                 if (bmcr & BMCR_ANENABLE) {
 447                         err =  phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0);
 448                         if (err < 0)
 449                                 return err;
 450                 }
 451                 phydev->autoneg = AUTONEG_DISABLE;
 452                 linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
 453                                    phydev->supported);
 454                 linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
 455                                    phydev->advertising);
 456
 457                 /* Setup fiber advertisement */
 458                 err = phy_modify_changed(phydev, MII_ADVERTISE,
 459                                          MII_DP83822_FIBER_ADVERTISE,
 460                                          MII_DP83822_FIBER_ADVERTISE);
 461
 462                 if (err < 0)
 463                         return err;
 464
 465                 if (dp83822->fx_signal_det_low) {
 466                         err = phy_set_bits_mmd(phydev, DP83822_DEVADDR,
 467                                                MII_DP83822_GENCFG,
 468                                                DP83822_SIG_DET_LOW);
 469                         if (err)
 470                                 return err;
 471                 }
 472         }
 473         return dp8382x_disable_wol(phydev);
 474 }
 475
 476 static int dp8382x_config_init(struct phy_device *phydev)
 477 {
 478         return dp8382x_disable_wol(phydev);
 479 }
 480
 481 static int dp83822_phy_reset(struct phy_device *phydev)
 482 {
 483         int err;
 484
 485         err = phy_write(phydev, MII_DP83822_RESET_CTRL, DP83822_SW_RESET);
 486         if (err < 0)
 487                 return err;
 488
 489         return phydev->drv->config_init(phydev);
 490 }
 491
 492 #ifdef CONFIG_OF_MDIO
 493 static int dp83822_of_init(struct phy_device *phydev)
 494 {
 495         struct dp83822_private *dp83822 = phydev->priv;
 496         struct device *dev = &phydev->mdio.dev;
 497
 498         /* Signal detection for the PHY is only enabled if the FX_EN and the
 499          * SD_EN pins are strapped. Signal detection can only enabled if FX_EN
 500          * is strapped otherwise signal detection is disabled for the PHY.
 501          */
 502         if (dp83822->fx_enabled && dp83822->fx_sd_enable)
 503                 dp83822->fx_signal_det_low = device_property_present(dev,
 504                                                                      "ti,link-loss-low");
 505         if (!dp83822->fx_enabled)
 506                 dp83822->fx_enabled = device_property_present(dev,
 507                                                               "ti,fiber-mode");
 508
 509         return 0;
 510 }
 511 #else
 512 static int dp83822_of_init(struct phy_device *phydev)
 513 {
 514         return 0;
 515 }
 516 #endif /* CONFIG_OF_MDIO */
 517
 518 static int dp83822_read_straps(struct phy_device *phydev)
 519 {
 520         struct dp83822_private *dp83822 = phydev->priv;
 521         int fx_enabled, fx_sd_enable;
 522         int val;
 523
 524         val = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_SOR1);
 525         if (val < 0)
 526                 return val;
 527
 528         fx_enabled = (val & DP83822_COL_STRAP_MASK) >> DP83822_COL_SHIFT;
 529         if (fx_enabled == DP83822_STRAP_MODE2 ||
 530             fx_enabled == DP83822_STRAP_MODE3)
 531                 dp83822->fx_enabled = 1;
 532
 533         if (dp83822->fx_enabled) {
 534                 fx_sd_enable = (val & DP83822_RX_ER_STR_MASK) >> DP83822_RX_ER_SHIFT;
 535                 if (fx_sd_enable == DP83822_STRAP_MODE3 ||
 536                     fx_sd_enable == DP83822_STRAP_MODE4)
 537                         dp83822->fx_sd_enable = 1;
 538         }
 539
 540         return 0;
 541 }
 542
 543 static int dp83822_probe(struct phy_device *phydev)
 544 {
 545         struct dp83822_private *dp83822;
 546         int ret;
 547
 548         dp83822 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83822),
 549                                GFP_KERNEL);
 550         if (!dp83822)
 551                 return -ENOMEM;
 552
 553         phydev->priv = dp83822;
 554
 555         ret = dp83822_read_straps(phydev);
 556         if (ret)
 557                 return ret;
 558
 559         dp83822_of_init(phydev);
 560
 561         if (dp83822->fx_enabled)
 562                 phydev->port = PORT_FIBRE;
 563
 564         return 0;
 565 }
 566
 567 static int dp83822_suspend(struct phy_device *phydev)
 568 {
 569         int value;
 570
 571         value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG);
 572
 573         if (!(value & DP83822_WOL_EN))
 574                 genphy_suspend(phydev);
 575
 576         return 0;
 577 }
 578
 579 static int dp83822_resume(struct phy_device *phydev)
 580 {
 581         int value;
 582
 583         genphy_resume(phydev);
 584
 585         value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG);
 586
 587         phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value |
 588                       DP83822_WOL_CLR_INDICATION);
 589
 590         return 0;
 591 }
 592
 593 #define DP83822_PHY_DRIVER(_id, _name)                          \
 594         {                                                       \
 595                 PHY_ID_MATCH_MODEL(_id),                        \
 596                 .name           = (_name),                      \
 597                 /* PHY_BASIC_FEATURES */                        \
 598                 .probe          = dp83822_probe,                \
 599                 .soft_reset     = dp83822_phy_reset,            \
 600                 .config_init    = dp83822_config_init,          \
 601                 .read_status    = dp83822_read_status,          \
 602                 .get_wol = dp83822_get_wol,                     \
 603                 .set_wol = dp83822_set_wol,                     \
 604                 .config_intr = dp83822_config_intr,             \
 605                 .handle_interrupt = dp83822_handle_interrupt,   \
 606                 .suspend = dp83822_suspend,                     \
 607                 .resume = dp83822_resume,                       \
 608         }
 609
 610 #define DP8382X_PHY_DRIVER(_id, _name)                          \
 611         {                                                       \
 612                 PHY_ID_MATCH_MODEL(_id),                        \
 613                 .name           = (_name),                      \
 614                 /* PHY_BASIC_FEATURES */                        \
 615                 .soft_reset     = dp83822_phy_reset,            \
 616                 .config_init    = dp8382x_config_init,          \
 617                 .get_wol = dp83822_get_wol,                     \
 618                 .set_wol = dp83822_set_wol,                     \
 619                 .config_intr = dp83822_config_intr,             \
 620                 .handle_interrupt = dp83822_handle_interrupt,   \
 621                 .suspend = dp83822_suspend,                     \
 622                 .resume = dp83822_resume,                       \
 623         }
 624
 625 static struct phy_driver dp83822_driver[] = {
 626         DP83822_PHY_DRIVER(DP83822_PHY_ID, "TI DP83822"),
 627         DP8382X_PHY_DRIVER(DP83825I_PHY_ID, "TI DP83825I"),
 628         DP8382X_PHY_DRIVER(DP83826C_PHY_ID, "TI DP83826C"),
 629         DP8382X_PHY_DRIVER(DP83826NC_PHY_ID, "TI DP83826NC"),
 630         DP8382X_PHY_DRIVER(DP83825S_PHY_ID, "TI DP83825S"),
 631         DP8382X_PHY_DRIVER(DP83825CM_PHY_ID, "TI DP83825M"),
 632         DP8382X_PHY_DRIVER(DP83825CS_PHY_ID, "TI DP83825CS"),
 633 };
 634 module_phy_driver(dp83822_driver);
 635
 636 static struct mdio_device_id __maybe_unused dp83822_tbl[] = {
 637         { DP83822_PHY_ID, 0xfffffff0 },
 638         { DP83825I_PHY_ID, 0xfffffff0 },
 639         { DP83826C_PHY_ID, 0xfffffff0 },
 640         { DP83826NC_PHY_ID, 0xfffffff0 },
 641         { DP83825S_PHY_ID, 0xfffffff0 },
 642         { DP83825CM_PHY_ID, 0xfffffff0 },
 643         { DP83825CS_PHY_ID, 0xfffffff0 },
 644         { },
 645 };
 646 MODULE_DEVICE_TABLE(mdio, dp83822_tbl);
 647
 648 MODULE_DESCRIPTION("Texas Instruments DP83822 PHY driver");
 649 MODULE_AUTHOR("Dan Murphy <[email protected]");
 650 MODULE_LICENSE("GPL v2");