drivers/net/phy/mscc.c

   1 /*
   2  * Driver for Microsemi VSC85xx PHYs
   3  *
   4  * Author: Nagaraju Lakkaraju
   5  * License: Dual MIT/GPL
   6  * Copyright (c) 2016 Microsemi Corporation
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/module.h>
  11 #include <linux/mdio.h>
  12 #include <linux/mii.h>
  13 #include <linux/phy.h>
  14 #include <linux/of.h>
  15 #include <linux/netdevice.h>
  16 #include <dt-bindings/net/mscc-phy-vsc8531.h>
  17
  18 enum rgmii_rx_clock_delay {
  19         RGMII_RX_CLK_DELAY_0_2_NS = 0,
  20         RGMII_RX_CLK_DELAY_0_8_NS = 1,
  21         RGMII_RX_CLK_DELAY_1_1_NS = 2,
  22         RGMII_RX_CLK_DELAY_1_7_NS = 3,
  23         RGMII_RX_CLK_DELAY_2_0_NS = 4,
  24         RGMII_RX_CLK_DELAY_2_3_NS = 5,
  25         RGMII_RX_CLK_DELAY_2_6_NS = 6,
  26         RGMII_RX_CLK_DELAY_3_4_NS = 7
  27 };
  28
  29 /* Microsemi VSC85xx PHY registers */
  30 /* IEEE 802. Std Registers */
  31 #define MSCC_PHY_BYPASS_CONTROL           18
  32 #define DISABLE_HP_AUTO_MDIX_MASK         0x0080
  33 #define DISABLE_PAIR_SWAP_CORR_MASK       0x0020
  34 #define DISABLE_POLARITY_CORR_MASK        0x0010
  35
  36 #define MSCC_PHY_EXT_PHY_CNTL_1           23
  37 #define MAC_IF_SELECTION_MASK             0x1800
  38 #define MAC_IF_SELECTION_GMII             0
  39 #define MAC_IF_SELECTION_RMII             1
  40 #define MAC_IF_SELECTION_RGMII            2
  41 #define MAC_IF_SELECTION_POS              11
  42 #define FAR_END_LOOPBACK_MODE_MASK        0x0008
  43
  44 #define MII_VSC85XX_INT_MASK              25
  45 #define MII_VSC85XX_INT_MASK_MASK         0xa000
  46 #define MII_VSC85XX_INT_MASK_WOL          0x0040
  47 #define MII_VSC85XX_INT_STATUS            26
  48
  49 #define MSCC_PHY_WOL_MAC_CONTROL          27
  50 #define EDGE_RATE_CNTL_POS                5
  51 #define EDGE_RATE_CNTL_MASK               0x00E0
  52
  53 #define MSCC_PHY_DEV_AUX_CNTL             28
  54 #define HP_AUTO_MDIX_X_OVER_IND_MASK      0x2000
  55
  56 #define MSCC_PHY_LED_MODE_SEL             29
  57 #define LED_1_MODE_SEL_MASK               0x00F0
  58 #define LED_0_MODE_SEL_MASK               0x000F
  59 #define LED_1_MODE_SEL_POS                4
  60
  61 #define MSCC_EXT_PAGE_ACCESS              31
  62 #define MSCC_PHY_PAGE_STANDARD            0x0000 /* Standard registers */
  63 #define MSCC_PHY_PAGE_EXTENDED            0x0001 /* Extended registers */
  64 #define MSCC_PHY_PAGE_EXTENDED_2          0x0002 /* Extended reg - page 2 */
  65
  66 /* Extended Page 1 Registers */
  67 #define MSCC_PHY_EXT_MODE_CNTL            19
  68 #define FORCE_MDI_CROSSOVER_MASK          0x000C
  69 #define FORCE_MDI_CROSSOVER_MDIX          0x000C
  70 #define FORCE_MDI_CROSSOVER_MDI           0x0008
  71
  72 #define MSCC_PHY_ACTIPHY_CNTL             20
  73 #define DOWNSHIFT_CNTL_MASK               0x001C
  74 #define DOWNSHIFT_EN                      0x0010
  75 #define DOWNSHIFT_CNTL_POS                2
  76
  77 /* Extended Page 2 Registers */
  78 #define MSCC_PHY_RGMII_CNTL               20
  79 #define RGMII_RX_CLK_DELAY_MASK           0x0070
  80 #define RGMII_RX_CLK_DELAY_POS            4
  81
  82 #define MSCC_PHY_WOL_LOWER_MAC_ADDR       21
  83 #define MSCC_PHY_WOL_MID_MAC_ADDR         22
  84 #define MSCC_PHY_WOL_UPPER_MAC_ADDR       23
  85 #define MSCC_PHY_WOL_LOWER_PASSWD         24
  86 #define MSCC_PHY_WOL_MID_PASSWD           25
  87 #define MSCC_PHY_WOL_UPPER_PASSWD         26
  88
  89 #define MSCC_PHY_WOL_MAC_CONTROL          27
  90 #define SECURE_ON_ENABLE                  0x8000
  91 #define SECURE_ON_PASSWD_LEN_4            0x4000
  92
  93 /* Microsemi PHY ID's */
  94 #define PHY_ID_VSC8530                    0x00070560
  95 #define PHY_ID_VSC8531                    0x00070570
  96 #define PHY_ID_VSC8540                    0x00070760
  97 #define PHY_ID_VSC8541                    0x00070770
  98
  99 #define MSCC_VDDMAC_1500                  1500
 100 #define MSCC_VDDMAC_1800                  1800
 101 #define MSCC_VDDMAC_2500                  2500
 102 #define MSCC_VDDMAC_3300                  3300
 103
 104 #define DOWNSHIFT_COUNT_MAX               5
 105
 106 struct vsc8531_private {
 107         int rate_magic;
 108         u8 led_0_mode;
 109         u8 led_1_mode;
 110 };
 111
 112 #ifdef CONFIG_OF_MDIO
 113 struct vsc8531_edge_rate_table {
 114         u16 vddmac;
 115         u8 slowdown[8];
 116 };
 117
 118 static const struct vsc8531_edge_rate_table edge_table[] = {
 119         {MSCC_VDDMAC_3300, { 0, 2,  4,  7, 10, 17, 29, 53} },
 120         {MSCC_VDDMAC_2500, { 0, 3,  6, 10, 14, 23, 37, 63} },
 121         {MSCC_VDDMAC_1800, { 0, 5,  9, 16, 23, 35, 52, 76} },
 122         {MSCC_VDDMAC_1500, { 0, 6, 14, 21, 29, 42, 58, 77} },
 123 };
 124 #endif /* CONFIG_OF_MDIO */
 125
 126 static int vsc85xx_phy_page_set(struct phy_device *phydev, u8 page)
 127 {
 128         int rc;
 129
 130         rc = phy_write(phydev, MSCC_EXT_PAGE_ACCESS, page);
 131         return rc;
 132 }
 133
 134 static int vsc85xx_led_cntl_set(struct phy_device *phydev,
 135                                 u8 led_num,
 136                                 u8 mode)
 137 {
 138         int rc;
 139         u16 reg_val;
 140
 141         mutex_lock(&phydev->lock);
 142         reg_val = phy_read(phydev, MSCC_PHY_LED_MODE_SEL);
 143         if (led_num) {
 144                 reg_val &= ~LED_1_MODE_SEL_MASK;
 145                 reg_val |= (((u16)mode << LED_1_MODE_SEL_POS) &
 146                             LED_1_MODE_SEL_MASK);
 147         } else {
 148                 reg_val &= ~LED_0_MODE_SEL_MASK;
 149                 reg_val |= ((u16)mode & LED_0_MODE_SEL_MASK);
 150         }
 151         rc = phy_write(phydev, MSCC_PHY_LED_MODE_SEL, reg_val);
 152         mutex_unlock(&phydev->lock);
 153
 154         return rc;
 155 }
 156
 157 static int vsc85xx_mdix_get(struct phy_device *phydev, u8 *mdix)
 158 {
 159         u16 reg_val;
 160
 161         reg_val = phy_read(phydev, MSCC_PHY_DEV_AUX_CNTL);
 162         if (reg_val & HP_AUTO_MDIX_X_OVER_IND_MASK)
 163                 *mdix = ETH_TP_MDI_X;
 164         else
 165                 *mdix = ETH_TP_MDI;
 166
 167         return 0;
 168 }
 169
 170 static int vsc85xx_mdix_set(struct phy_device *phydev, u8 mdix)
 171 {
 172         int rc;
 173         u16 reg_val;
 174
 175         reg_val = phy_read(phydev, MSCC_PHY_BYPASS_CONTROL);
 176         if ((mdix == ETH_TP_MDI) || (mdix == ETH_TP_MDI_X)) {
 177                 reg_val |= (DISABLE_PAIR_SWAP_CORR_MASK |
 178                             DISABLE_POLARITY_CORR_MASK  |
 179                             DISABLE_HP_AUTO_MDIX_MASK);
 180         } else {
 181                 reg_val &= ~(DISABLE_PAIR_SWAP_CORR_MASK |
 182                              DISABLE_POLARITY_CORR_MASK  |
 183                              DISABLE_HP_AUTO_MDIX_MASK);
 184         }
 185         rc = phy_write(phydev, MSCC_PHY_BYPASS_CONTROL, reg_val);
 186         if (rc != 0)
 187                 return rc;
 188
 189         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED);
 190         if (rc != 0)
 191                 return rc;
 192
 193         reg_val = phy_read(phydev, MSCC_PHY_EXT_MODE_CNTL);
 194         reg_val &= ~(FORCE_MDI_CROSSOVER_MASK);
 195         if (mdix == ETH_TP_MDI)
 196                 reg_val |= FORCE_MDI_CROSSOVER_MDI;
 197         else if (mdix == ETH_TP_MDI_X)
 198                 reg_val |= FORCE_MDI_CROSSOVER_MDIX;
 199         rc = phy_write(phydev, MSCC_PHY_EXT_MODE_CNTL, reg_val);
 200         if (rc != 0)
 201                 return rc;
 202
 203         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 204         if (rc != 0)
 205                 return rc;
 206
 207         return genphy_restart_aneg(phydev);
 208 }
 209
 210 static int vsc85xx_downshift_get(struct phy_device *phydev, u8 *count)
 211 {
 212         int rc;
 213         u16 reg_val;
 214
 215         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED);
 216         if (rc != 0)
 217                 goto out;
 218
 219         reg_val = phy_read(phydev, MSCC_PHY_ACTIPHY_CNTL);
 220         reg_val &= DOWNSHIFT_CNTL_MASK;
 221         if (!(reg_val & DOWNSHIFT_EN))
 222                 *count = DOWNSHIFT_DEV_DISABLE;
 223         else
 224                 *count = ((reg_val & ~DOWNSHIFT_EN) >> DOWNSHIFT_CNTL_POS) + 2;
 225         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 226
 227 out:
 228         return rc;
 229 }
 230
 231 static int vsc85xx_downshift_set(struct phy_device *phydev, u8 count)
 232 {
 233         int rc;
 234         u16 reg_val;
 235
 236         if (count == DOWNSHIFT_DEV_DEFAULT_COUNT) {
 237                 /* Default downshift count 3 (i.e. Bit3:2 = 0b01) */
 238                 count = ((1 << DOWNSHIFT_CNTL_POS) | DOWNSHIFT_EN);
 239         } else if (count > DOWNSHIFT_COUNT_MAX || count == 1) {
 240                 phydev_err(phydev, "Downshift count should be 2,3,4 or 5\n");
 241                 return -ERANGE;
 242         } else if (count) {
 243                 /* Downshift count is either 2,3,4 or 5 */
 244                 count = (((count - 2) << DOWNSHIFT_CNTL_POS) | DOWNSHIFT_EN);
 245         }
 246
 247         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED);
 248         if (rc != 0)
 249                 goto out;
 250
 251         reg_val = phy_read(phydev, MSCC_PHY_ACTIPHY_CNTL);
 252         reg_val &= ~(DOWNSHIFT_CNTL_MASK);
 253         reg_val |= count;
 254         rc = phy_write(phydev, MSCC_PHY_ACTIPHY_CNTL, reg_val);
 255         if (rc != 0)
 256                 goto out;
 257
 258         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 259
 260 out:
 261         return rc;
 262 }
 263
 264 static int vsc85xx_wol_set(struct phy_device *phydev,
 265                            struct ethtool_wolinfo *wol)
 266 {
 267         int rc;
 268         u16 reg_val;
 269         u8  i;
 270         u16 pwd[3] = {0, 0, 0};
 271         struct ethtool_wolinfo *wol_conf = wol;
 272         u8 *mac_addr = phydev->attached_dev->dev_addr;
 273
 274         mutex_lock(&phydev->lock);
 275         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
 276         if (rc != 0)
 277                 goto out_unlock;
 278
 279         if (wol->wolopts & WAKE_MAGIC) {
 280                 /* Store the device address for the magic packet */
 281                 for (i = 0; i < ARRAY_SIZE(pwd); i++)
 282                         pwd[i] = mac_addr[5 - (i * 2 + 1)] << 8 |
 283                                  mac_addr[5 - i * 2];
 284                 phy_write(phydev, MSCC_PHY_WOL_LOWER_MAC_ADDR, pwd[0]);
 285                 phy_write(phydev, MSCC_PHY_WOL_MID_MAC_ADDR, pwd[1]);
 286                 phy_write(phydev, MSCC_PHY_WOL_UPPER_MAC_ADDR, pwd[2]);
 287         } else {
 288                 phy_write(phydev, MSCC_PHY_WOL_LOWER_MAC_ADDR, 0);
 289                 phy_write(phydev, MSCC_PHY_WOL_MID_MAC_ADDR, 0);
 290                 phy_write(phydev, MSCC_PHY_WOL_UPPER_MAC_ADDR, 0);
 291         }
 292
 293         if (wol_conf->wolopts & WAKE_MAGICSECURE) {
 294                 for (i = 0; i < ARRAY_SIZE(pwd); i++)
 295                         pwd[i] = wol_conf->sopass[5 - (i * 2 + 1)] << 8 |
 296                                  wol_conf->sopass[5 - i * 2];
 297                 phy_write(phydev, MSCC_PHY_WOL_LOWER_PASSWD, pwd[0]);
 298                 phy_write(phydev, MSCC_PHY_WOL_MID_PASSWD, pwd[1]);
 299                 phy_write(phydev, MSCC_PHY_WOL_UPPER_PASSWD, pwd[2]);
 300         } else {
 301                 phy_write(phydev, MSCC_PHY_WOL_LOWER_PASSWD, 0);
 302                 phy_write(phydev, MSCC_PHY_WOL_MID_PASSWD, 0);
 303                 phy_write(phydev, MSCC_PHY_WOL_UPPER_PASSWD, 0);
 304         }
 305
 306         reg_val = phy_read(phydev, MSCC_PHY_WOL_MAC_CONTROL);
 307         if (wol_conf->wolopts & WAKE_MAGICSECURE)
 308                 reg_val |= SECURE_ON_ENABLE;
 309         else
 310                 reg_val &= ~SECURE_ON_ENABLE;
 311         phy_write(phydev, MSCC_PHY_WOL_MAC_CONTROL, reg_val);
 312
 313         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 314         if (rc != 0)
 315                 goto out_unlock;
 316
 317         if (wol->wolopts & WAKE_MAGIC) {
 318                 /* Enable the WOL interrupt */
 319                 reg_val = phy_read(phydev, MII_VSC85XX_INT_MASK);
 320                 reg_val |= MII_VSC85XX_INT_MASK_WOL;
 321                 rc = phy_write(phydev, MII_VSC85XX_INT_MASK, reg_val);
 322                 if (rc != 0)
 323                         goto out_unlock;
 324         } else {
 325                 /* Disable the WOL interrupt */
 326                 reg_val = phy_read(phydev, MII_VSC85XX_INT_MASK);
 327                 reg_val &= (~MII_VSC85XX_INT_MASK_WOL);
 328                 rc = phy_write(phydev, MII_VSC85XX_INT_MASK, reg_val);
 329                 if (rc != 0)
 330                         goto out_unlock;
 331         }
 332         /* Clear WOL iterrupt status */
 333         reg_val = phy_read(phydev, MII_VSC85XX_INT_STATUS);
 334
 335 out_unlock:
 336         mutex_unlock(&phydev->lock);
 337
 338         return rc;
 339 }
 340
 341 static void vsc85xx_wol_get(struct phy_device *phydev,
 342                             struct ethtool_wolinfo *wol)
 343 {
 344         int rc;
 345         u16 reg_val;
 346         u8  i;
 347         u16 pwd[3] = {0, 0, 0};
 348         struct ethtool_wolinfo *wol_conf = wol;
 349
 350         mutex_lock(&phydev->lock);
 351         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
 352         if (rc != 0)
 353                 goto out_unlock;
 354
 355         reg_val = phy_read(phydev, MSCC_PHY_WOL_MAC_CONTROL);
 356         if (reg_val & SECURE_ON_ENABLE)
 357                 wol_conf->wolopts |= WAKE_MAGICSECURE;
 358         if (wol_conf->wolopts & WAKE_MAGICSECURE) {
 359                 pwd[0] = phy_read(phydev, MSCC_PHY_WOL_LOWER_PASSWD);
 360                 pwd[1] = phy_read(phydev, MSCC_PHY_WOL_MID_PASSWD);
 361                 pwd[2] = phy_read(phydev, MSCC_PHY_WOL_UPPER_PASSWD);
 362                 for (i = 0; i < ARRAY_SIZE(pwd); i++) {
 363                         wol_conf->sopass[5 - i * 2] = pwd[i] & 0x00ff;
 364                         wol_conf->sopass[5 - (i * 2 + 1)] = (pwd[i] & 0xff00)
 365                                                             >> 8;
 366                 }
 367         }
 368
 369         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 370
 371 out_unlock:
 372         mutex_unlock(&phydev->lock);
 373 }
 374
 375 #ifdef CONFIG_OF_MDIO
 376 static int vsc85xx_edge_rate_magic_get(struct phy_device *phydev)
 377 {
 378         u8 sd;
 379         u16 vdd;
 380         int rc, i, j;
 381         struct device *dev = &phydev->mdio.dev;
 382         struct device_node *of_node = dev->of_node;
 383         u8 sd_array_size = ARRAY_SIZE(edge_table[0].slowdown);
 384
 385         if (!of_node)
 386                 return -ENODEV;
 387
 388         rc = of_property_read_u16(of_node, "vsc8531,vddmac", &vdd);
 389         if (rc != 0)
 390                 vdd = MSCC_VDDMAC_3300;
 391
 392         rc = of_property_read_u8(of_node, "vsc8531,edge-slowdown", &sd);
 393         if (rc != 0)
 394                 sd = 0;
 395
 396         for (i = 0; i < ARRAY_SIZE(edge_table); i++)
 397                 if (edge_table[i].vddmac == vdd)
 398                         for (j = 0; j < sd_array_size; j++)
 399                                 if (edge_table[i].slowdown[j] == sd)
 400                                         return (sd_array_size - j - 1);
 401
 402         return -EINVAL;
 403 }
 404
 405 static int vsc85xx_dt_led_mode_get(struct phy_device *phydev,
 406                                    char *led,
 407                                    u8 default_mode)
 408 {
 409         struct device *dev = &phydev->mdio.dev;
 410         struct device_node *of_node = dev->of_node;
 411         u8 led_mode;
 412         int err;
 413
 414         if (!of_node)
 415                 return -ENODEV;
 416
 417         led_mode = default_mode;
 418         err = of_property_read_u8(of_node, led, &led_mode);
 419         if (!err && (led_mode > 15 || led_mode == 7 || led_mode == 11)) {
 420                 phydev_err(phydev, "DT %s invalid\n", led);
 421                 return -EINVAL;
 422         }
 423
 424         return led_mode;
 425 }
 426
 427 #else
 428 static int vsc85xx_edge_rate_magic_get(struct phy_device *phydev)
 429 {
 430         return 0;
 431 }
 432
 433 static int vsc85xx_dt_led_mode_get(struct phy_device *phydev,
 434                                    char *led,
 435                                    u8 default_mode)
 436 {
 437         return default_mode;
 438 }
 439 #endif /* CONFIG_OF_MDIO */
 440
 441 static int vsc85xx_edge_rate_cntl_set(struct phy_device *phydev, u8 edge_rate)
 442 {
 443         int rc;
 444         u16 reg_val;
 445
 446         mutex_lock(&phydev->lock);
 447         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
 448         if (rc != 0)
 449                 goto out_unlock;
 450         reg_val = phy_read(phydev, MSCC_PHY_WOL_MAC_CONTROL);
 451         reg_val &= ~(EDGE_RATE_CNTL_MASK);
 452         reg_val |= (edge_rate << EDGE_RATE_CNTL_POS);
 453         rc = phy_write(phydev, MSCC_PHY_WOL_MAC_CONTROL, reg_val);
 454         if (rc != 0)
 455                 goto out_unlock;
 456         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 457
 458 out_unlock:
 459         mutex_unlock(&phydev->lock);
 460
 461         return rc;
 462 }
 463
 464 static int vsc85xx_mac_if_set(struct phy_device *phydev,
 465                               phy_interface_t interface)
 466 {
 467         int rc;
 468         u16 reg_val;
 469
 470         mutex_lock(&phydev->lock);
 471         reg_val = phy_read(phydev, MSCC_PHY_EXT_PHY_CNTL_1);
 472         reg_val &= ~(MAC_IF_SELECTION_MASK);
 473         switch (interface) {
 474         case PHY_INTERFACE_MODE_RGMII:
 475                 reg_val |= (MAC_IF_SELECTION_RGMII << MAC_IF_SELECTION_POS);
 476                 break;
 477         case PHY_INTERFACE_MODE_RMII:
 478                 reg_val |= (MAC_IF_SELECTION_RMII << MAC_IF_SELECTION_POS);
 479                 break;
 480         case PHY_INTERFACE_MODE_MII:
 481         case PHY_INTERFACE_MODE_GMII:
 482                 reg_val |= (MAC_IF_SELECTION_GMII << MAC_IF_SELECTION_POS);
 483                 break;
 484         default:
 485                 rc = -EINVAL;
 486                 goto out_unlock;
 487         }
 488         rc = phy_write(phydev, MSCC_PHY_EXT_PHY_CNTL_1, reg_val);
 489         if (rc != 0)
 490                 goto out_unlock;
 491
 492         rc = genphy_soft_reset(phydev);
 493
 494 out_unlock:
 495         mutex_unlock(&phydev->lock);
 496
 497         return rc;
 498 }
 499
 500 static int vsc85xx_default_config(struct phy_device *phydev)
 501 {
 502         int rc;
 503         u16 reg_val;
 504
 505         phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
 506         mutex_lock(&phydev->lock);
 507         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
 508         if (rc != 0)
 509                 goto out_unlock;
 510
 511         reg_val = phy_read(phydev, MSCC_PHY_RGMII_CNTL);
 512         reg_val &= ~(RGMII_RX_CLK_DELAY_MASK);
 513         reg_val |= (RGMII_RX_CLK_DELAY_1_1_NS << RGMII_RX_CLK_DELAY_POS);
 514         phy_write(phydev, MSCC_PHY_RGMII_CNTL, reg_val);
 515         rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
 516
 517 out_unlock:
 518         mutex_unlock(&phydev->lock);
 519
 520         return rc;
 521 }
 522
 523 static int vsc85xx_get_tunable(struct phy_device *phydev,
 524                                struct ethtool_tunable *tuna, void *data)
 525 {
 526         switch (tuna->id) {
 527         case ETHTOOL_PHY_DOWNSHIFT:
 528                 return vsc85xx_downshift_get(phydev, (u8 *)data);
 529         default:
 530                 return -EINVAL;
 531         }
 532 }
 533
 534 static int vsc85xx_set_tunable(struct phy_device *phydev,
 535                                struct ethtool_tunable *tuna,
 536                                const void *data)
 537 {
 538         switch (tuna->id) {
 539         case ETHTOOL_PHY_DOWNSHIFT:
 540                 return vsc85xx_downshift_set(phydev, *(u8 *)data);
 541         default:
 542                 return -EINVAL;
 543         }
 544 }
 545
 546 static int vsc85xx_config_init(struct phy_device *phydev)
 547 {
 548         int rc;
 549         struct vsc8531_private *vsc8531 = phydev->priv;
 550
 551         rc = vsc85xx_default_config(phydev);
 552         if (rc)
 553                 return rc;
 554
 555         rc = vsc85xx_mac_if_set(phydev, phydev->interface);
 556         if (rc)
 557                 return rc;
 558
 559         rc = vsc85xx_edge_rate_cntl_set(phydev, vsc8531->rate_magic);
 560         if (rc)
 561                 return rc;
 562
 563         rc = vsc85xx_led_cntl_set(phydev, 1, vsc8531->led_1_mode);
 564         if (rc)
 565                 return rc;
 566
 567         rc = vsc85xx_led_cntl_set(phydev, 0, vsc8531->led_0_mode);
 568         if (rc)
 569                 return rc;
 570
 571         rc = genphy_config_init(phydev);
 572
 573         return rc;
 574 }
 575
 576 static int vsc85xx_ack_interrupt(struct phy_device *phydev)
 577 {
 578         int rc = 0;
 579
 580         if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
 581                 rc = phy_read(phydev, MII_VSC85XX_INT_STATUS);
 582
 583         return (rc < 0) ? rc : 0;
 584 }
 585
 586 static int vsc85xx_config_intr(struct phy_device *phydev)
 587 {
 588         int rc;
 589
 590         if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 591                 rc = phy_write(phydev, MII_VSC85XX_INT_MASK,
 592                                MII_VSC85XX_INT_MASK_MASK);
 593         } else {
 594                 rc = phy_write(phydev, MII_VSC85XX_INT_MASK, 0);
 595                 if (rc < 0)
 596                         return rc;
 597                 rc = phy_read(phydev, MII_VSC85XX_INT_STATUS);
 598         }
 599
 600         return rc;
 601 }
 602
 603 static int vsc85xx_config_aneg(struct phy_device *phydev)
 604 {
 605         int rc;
 606
 607         rc = vsc85xx_mdix_set(phydev, phydev->mdix_ctrl);
 608         if (rc < 0)
 609                 return rc;
 610
 611         return genphy_config_aneg(phydev);
 612 }
 613
 614 static int vsc85xx_read_status(struct phy_device *phydev)
 615 {
 616         int rc;
 617
 618         rc = vsc85xx_mdix_get(phydev, &phydev->mdix);
 619         if (rc < 0)
 620                 return rc;
 621
 622         return genphy_read_status(phydev);
 623 }
 624
 625 static int vsc85xx_probe(struct phy_device *phydev)
 626 {
 627         struct vsc8531_private *vsc8531;
 628         int rate_magic;
 629         int led_mode;
 630
 631         rate_magic = vsc85xx_edge_rate_magic_get(phydev);
 632         if (rate_magic < 0)
 633                 return rate_magic;
 634
 635         vsc8531 = devm_kzalloc(&phydev->mdio.dev, sizeof(*vsc8531), GFP_KERNEL);
 636         if (!vsc8531)
 637                 return -ENOMEM;
 638
 639         phydev->priv = vsc8531;
 640
 641         vsc8531->rate_magic = rate_magic;
 642
 643         /* LED[0] and LED[1] mode */
 644         led_mode = vsc85xx_dt_led_mode_get(phydev, "vsc8531,led-0-mode",
 645                                            VSC8531_LINK_1000_ACTIVITY);
 646         if (led_mode < 0)
 647                 return led_mode;
 648         vsc8531->led_0_mode = led_mode;
 649
 650         led_mode = vsc85xx_dt_led_mode_get(phydev, "vsc8531,led-1-mode",
 651                                            VSC8531_LINK_100_ACTIVITY);
 652         if (led_mode < 0)
 653                 return led_mode;
 654         vsc8531->led_1_mode = led_mode;
 655
 656         return 0;
 657 }
 658
 659 /* Microsemi VSC85xx PHYs */
 660 static struct phy_driver vsc85xx_driver[] = {
 661 {
 662         .phy_id         = PHY_ID_VSC8530,
 663         .name           = "Microsemi FE VSC8530",
 664         .phy_id_mask    = 0xfffffff0,
 665         .features       = PHY_BASIC_FEATURES,
 666         .flags          = PHY_HAS_INTERRUPT,
 667         .soft_reset     = &genphy_soft_reset,
 668         .config_init    = &vsc85xx_config_init,
 669         .config_aneg    = &vsc85xx_config_aneg,
 670         .aneg_done      = &genphy_aneg_done,
 671         .read_status    = &vsc85xx_read_status,
 672         .ack_interrupt  = &vsc85xx_ack_interrupt,
 673         .config_intr    = &vsc85xx_config_intr,
 674         .suspend        = &genphy_suspend,
 675         .resume         = &genphy_resume,
 676         .probe          = &vsc85xx_probe,
 677         .set_wol        = &vsc85xx_wol_set,
 678         .get_wol        = &vsc85xx_wol_get,
 679         .get_tunable    = &vsc85xx_get_tunable,
 680         .set_tunable    = &vsc85xx_set_tunable,
 681 },
 682 {
 683         .phy_id         = PHY_ID_VSC8531,
 684         .name           = "Microsemi VSC8531",
 685         .phy_id_mask    = 0xfffffff0,
 686         .features       = PHY_GBIT_FEATURES,
 687         .flags          = PHY_HAS_INTERRUPT,
 688         .soft_reset     = &genphy_soft_reset,
 689         .config_init    = &vsc85xx_config_init,
 690         .config_aneg    = &vsc85xx_config_aneg,
 691         .aneg_done      = &genphy_aneg_done,
 692         .read_status    = &vsc85xx_read_status,
 693         .ack_interrupt  = &vsc85xx_ack_interrupt,
 694         .config_intr    = &vsc85xx_config_intr,
 695         .suspend        = &genphy_suspend,
 696         .resume         = &genphy_resume,
 697         .probe          = &vsc85xx_probe,
 698         .set_wol        = &vsc85xx_wol_set,
 699         .get_wol        = &vsc85xx_wol_get,
 700         .get_tunable    = &vsc85xx_get_tunable,
 701         .set_tunable    = &vsc85xx_set_tunable,
 702 },
 703 {
 704         .phy_id         = PHY_ID_VSC8540,
 705         .name           = "Microsemi FE VSC8540 SyncE",
 706         .phy_id_mask    = 0xfffffff0,
 707         .features       = PHY_BASIC_FEATURES,
 708         .flags          = PHY_HAS_INTERRUPT,
 709         .soft_reset     = &genphy_soft_reset,
 710         .config_init    = &vsc85xx_config_init,
 711         .config_aneg    = &vsc85xx_config_aneg,
 712         .aneg_done      = &genphy_aneg_done,
 713         .read_status    = &vsc85xx_read_status,
 714         .ack_interrupt  = &vsc85xx_ack_interrupt,
 715         .config_intr    = &vsc85xx_config_intr,
 716         .suspend        = &genphy_suspend,
 717         .resume         = &genphy_resume,
 718         .probe          = &vsc85xx_probe,
 719         .set_wol        = &vsc85xx_wol_set,
 720         .get_wol        = &vsc85xx_wol_get,
 721         .get_tunable    = &vsc85xx_get_tunable,
 722         .set_tunable    = &vsc85xx_set_tunable,
 723 },
 724 {
 725         .phy_id         = PHY_ID_VSC8541,
 726         .name           = "Microsemi VSC8541 SyncE",
 727         .phy_id_mask    = 0xfffffff0,
 728         .features       = PHY_GBIT_FEATURES,
 729         .flags          = PHY_HAS_INTERRUPT,
 730         .soft_reset     = &genphy_soft_reset,
 731         .config_init    = &vsc85xx_config_init,
 732         .config_aneg    = &vsc85xx_config_aneg,
 733         .aneg_done      = &genphy_aneg_done,
 734         .read_status    = &vsc85xx_read_status,
 735         .ack_interrupt  = &vsc85xx_ack_interrupt,
 736         .config_intr    = &vsc85xx_config_intr,
 737         .suspend        = &genphy_suspend,
 738         .resume         = &genphy_resume,
 739         .probe          = &vsc85xx_probe,
 740         .set_wol        = &vsc85xx_wol_set,
 741         .get_wol        = &vsc85xx_wol_get,
 742         .get_tunable    = &vsc85xx_get_tunable,
 743         .set_tunable    = &vsc85xx_set_tunable,
 744 }
 745
 746 };
 747
 748 module_phy_driver(vsc85xx_driver);
 749
 750 static struct mdio_device_id __maybe_unused vsc85xx_tbl[] = {
 751         { PHY_ID_VSC8530, 0xfffffff0, },
 752         { PHY_ID_VSC8531, 0xfffffff0, },
 753         { PHY_ID_VSC8540, 0xfffffff0, },
 754         { PHY_ID_VSC8541, 0xfffffff0, },
 755         { }
 756 };
 757
 758 MODULE_DEVICE_TABLE(mdio, vsc85xx_tbl);
 759
 760 MODULE_DESCRIPTION("Microsemi VSC85xx PHY driver");
 761 MODULE_AUTHOR("Nagaraju Lakkaraju");
 762 MODULE_LICENSE("Dual MIT/GPL");