1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright Altera Corporation (C) 2014. All rights reserved. 3 * 4 * Adopted from dwmac-sti.c 5 */ 6 7 #include <linux/mfd/altera-sysmgr.h> 8 #include <linux/of.h> 9 #include <linux/of_address.h> 10 #include <linux/of_net.h> 11 #include <linux/phy.h> 12 #include <linux/regmap.h> 13 #include <linux/mdio/mdio-regmap.h> 14 #include <linux/pcs-lynx.h> 15 #include <linux/reset.h> 16 #include <linux/stmmac.h> 17 18 #include "stmmac.h" 19 #include "stmmac_platform.h" 20 21 #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII 0x0 22 #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII 0x1 23 #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII 0x2 24 #define SYSMGR_EMACGRP_CTRL_PHYSEL_WIDTH 2 25 #define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK 0x00000003 26 #define SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK 0x00000010 27 #define SYSMGR_GEN10_EMACGRP_CTRL_PTP_REF_CLK_MASK 0x00000100 28 29 #define SYSMGR_FPGAGRP_MODULE_REG 0x00000028 30 #define SYSMGR_FPGAGRP_MODULE_EMAC 0x00000004 31 #define SYSMGR_FPGAINTF_EMAC_REG 0x00000070 32 #define SYSMGR_FPGAINTF_EMAC_BIT 0x1 33 34 #define EMAC_SPLITTER_CTRL_REG 0x0 35 #define EMAC_SPLITTER_CTRL_SPEED_MASK 0x3 36 #define EMAC_SPLITTER_CTRL_SPEED_10 0x2 37 #define EMAC_SPLITTER_CTRL_SPEED_100 0x3 38 #define EMAC_SPLITTER_CTRL_SPEED_1000 0x0 39 40 #define SGMII_ADAPTER_CTRL_REG 0x00 41 #define SGMII_ADAPTER_ENABLE 0x0000 42 #define SGMII_ADAPTER_DISABLE 0x0001 43 44 struct socfpga_dwmac; 45 struct socfpga_dwmac_ops { 46 int (*set_phy_mode)(struct socfpga_dwmac *dwmac_priv); 47 }; 48 49 struct socfpga_dwmac { 50 u32 reg_offset; 51 u32 reg_shift; 52 struct device *dev; 53 struct regmap *sys_mgr_base_addr; 54 struct reset_control *stmmac_rst; 55 struct reset_control *stmmac_ocp_rst; 56 void __iomem *splitter_base; 57 void __iomem *tse_pcs_base; 58 void __iomem *sgmii_adapter_base; 59 bool f2h_ptp_ref_clk; 60 const struct socfpga_dwmac_ops *ops; 61 struct mdio_device *pcs_mdiodev; 62 }; 63 64 static void socfpga_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode) 65 { 66 struct socfpga_dwmac *dwmac = (struct socfpga_dwmac *)priv; 67 void __iomem *splitter_base = dwmac->splitter_base; 68 void __iomem *sgmii_adapter_base = dwmac->sgmii_adapter_base; 69 struct device *dev = dwmac->dev; 70 struct net_device *ndev = dev_get_drvdata(dev); 71 struct phy_device *phy_dev = ndev->phydev; 72 u32 val; 73 74 if (sgmii_adapter_base) 75 writew(SGMII_ADAPTER_DISABLE, 76 sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG); 77 78 if (splitter_base) { 79 val = readl(splitter_base + EMAC_SPLITTER_CTRL_REG); 80 val &= ~EMAC_SPLITTER_CTRL_SPEED_MASK; 81 82 switch (speed) { 83 case 1000: 84 val |= EMAC_SPLITTER_CTRL_SPEED_1000; 85 break; 86 case 100: 87 val |= EMAC_SPLITTER_CTRL_SPEED_100; 88 break; 89 case 10: 90 val |= EMAC_SPLITTER_CTRL_SPEED_10; 91 break; 92 default: 93 return; 94 } 95 writel(val, splitter_base + EMAC_SPLITTER_CTRL_REG); 96 } 97 98 if (phy_dev && sgmii_adapter_base) 99 writew(SGMII_ADAPTER_ENABLE, 100 sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG); 101 } 102 103 static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *dev) 104 { 105 struct device_node *np = dev->of_node; 106 struct regmap *sys_mgr_base_addr; 107 u32 reg_offset, reg_shift; 108 int ret, index; 109 struct device_node *np_splitter = NULL; 110 struct device_node *np_sgmii_adapter = NULL; 111 struct resource res_splitter; 112 struct resource res_tse_pcs; 113 struct resource res_sgmii_adapter; 114 115 sys_mgr_base_addr = 116 altr_sysmgr_regmap_lookup_by_phandle(np, "altr,sysmgr-syscon"); 117 if (IS_ERR(sys_mgr_base_addr)) { 118 dev_info(dev, "No sysmgr-syscon node found\n"); 119 return PTR_ERR(sys_mgr_base_addr); 120 } 121 122 ret = of_property_read_u32_index(np, "altr,sysmgr-syscon", 1, ®_offset); 123 if (ret) { 124 dev_info(dev, "Could not read reg_offset from sysmgr-syscon!\n"); 125 return -EINVAL; 126 } 127 128 ret = of_property_read_u32_index(np, "altr,sysmgr-syscon", 2, ®_shift); 129 if (ret) { 130 dev_info(dev, "Could not read reg_shift from sysmgr-syscon!\n"); 131 return -EINVAL; 132 } 133 134 dwmac->f2h_ptp_ref_clk = of_property_read_bool(np, "altr,f2h_ptp_ref_clk"); 135 136 np_splitter = of_parse_phandle(np, "altr,emac-splitter", 0); 137 if (np_splitter) { 138 ret = of_address_to_resource(np_splitter, 0, &res_splitter); 139 of_node_put(np_splitter); 140 if (ret) { 141 dev_info(dev, "Missing emac splitter address\n"); 142 return -EINVAL; 143 } 144 145 dwmac->splitter_base = devm_ioremap_resource(dev, &res_splitter); 146 if (IS_ERR(dwmac->splitter_base)) { 147 dev_info(dev, "Failed to mapping emac splitter\n"); 148 return PTR_ERR(dwmac->splitter_base); 149 } 150 } 151 152 np_sgmii_adapter = of_parse_phandle(np, 153 "altr,gmii-to-sgmii-converter", 0); 154 if (np_sgmii_adapter) { 155 index = of_property_match_string(np_sgmii_adapter, "reg-names", 156 "hps_emac_interface_splitter_avalon_slave"); 157 158 if (index >= 0) { 159 if (of_address_to_resource(np_sgmii_adapter, index, 160 &res_splitter)) { 161 dev_err(dev, 162 "%s: ERROR: missing emac splitter address\n", 163 __func__); 164 ret = -EINVAL; 165 goto err_node_put; 166 } 167 168 dwmac->splitter_base = 169 devm_ioremap_resource(dev, &res_splitter); 170 171 if (IS_ERR(dwmac->splitter_base)) { 172 ret = PTR_ERR(dwmac->splitter_base); 173 goto err_node_put; 174 } 175 } 176 177 index = of_property_match_string(np_sgmii_adapter, "reg-names", 178 "gmii_to_sgmii_adapter_avalon_slave"); 179 180 if (index >= 0) { 181 if (of_address_to_resource(np_sgmii_adapter, index, 182 &res_sgmii_adapter)) { 183 dev_err(dev, 184 "%s: ERROR: failed mapping adapter\n", 185 __func__); 186 ret = -EINVAL; 187 goto err_node_put; 188 } 189 190 dwmac->sgmii_adapter_base = 191 devm_ioremap_resource(dev, &res_sgmii_adapter); 192 193 if (IS_ERR(dwmac->sgmii_adapter_base)) { 194 ret = PTR_ERR(dwmac->sgmii_adapter_base); 195 goto err_node_put; 196 } 197 } 198 199 index = of_property_match_string(np_sgmii_adapter, "reg-names", 200 "eth_tse_control_port"); 201 202 if (index >= 0) { 203 if (of_address_to_resource(np_sgmii_adapter, index, 204 &res_tse_pcs)) { 205 dev_err(dev, 206 "%s: ERROR: failed mapping tse control port\n", 207 __func__); 208 ret = -EINVAL; 209 goto err_node_put; 210 } 211 212 dwmac->tse_pcs_base = 213 devm_ioremap_resource(dev, &res_tse_pcs); 214 215 if (IS_ERR(dwmac->tse_pcs_base)) { 216 ret = PTR_ERR(dwmac->tse_pcs_base); 217 goto err_node_put; 218 } 219 } 220 } 221 dwmac->reg_offset = reg_offset; 222 dwmac->reg_shift = reg_shift; 223 dwmac->sys_mgr_base_addr = sys_mgr_base_addr; 224 dwmac->dev = dev; 225 of_node_put(np_sgmii_adapter); 226 227 return 0; 228 229 err_node_put: 230 of_node_put(np_sgmii_adapter); 231 return ret; 232 } 233 234 static int socfpga_get_plat_phymode(struct socfpga_dwmac *dwmac) 235 { 236 struct net_device *ndev = dev_get_drvdata(dwmac->dev); 237 struct stmmac_priv *priv = netdev_priv(ndev); 238 239 return priv->plat->mac_interface; 240 } 241 242 static void socfpga_sgmii_config(struct socfpga_dwmac *dwmac, bool enable) 243 { 244 u16 val = enable ? SGMII_ADAPTER_ENABLE : SGMII_ADAPTER_DISABLE; 245 246 writew(val, dwmac->sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG); 247 } 248 249 static int socfpga_set_phy_mode_common(int phymode, u32 *val) 250 { 251 switch (phymode) { 252 case PHY_INTERFACE_MODE_RGMII: 253 case PHY_INTERFACE_MODE_RGMII_ID: 254 case PHY_INTERFACE_MODE_RGMII_RXID: 255 case PHY_INTERFACE_MODE_RGMII_TXID: 256 *val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII; 257 break; 258 case PHY_INTERFACE_MODE_MII: 259 case PHY_INTERFACE_MODE_GMII: 260 case PHY_INTERFACE_MODE_SGMII: 261 *val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII; 262 break; 263 case PHY_INTERFACE_MODE_RMII: 264 *val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII; 265 break; 266 default: 267 return -EINVAL; 268 } 269 return 0; 270 } 271 272 static int socfpga_gen5_set_phy_mode(struct socfpga_dwmac *dwmac) 273 { 274 struct regmap *sys_mgr_base_addr = dwmac->sys_mgr_base_addr; 275 int phymode = socfpga_get_plat_phymode(dwmac); 276 u32 reg_offset = dwmac->reg_offset; 277 u32 reg_shift = dwmac->reg_shift; 278 u32 ctrl, val, module; 279 280 if (socfpga_set_phy_mode_common(phymode, &val)) { 281 dev_err(dwmac->dev, "bad phy mode %d\n", phymode); 282 return -EINVAL; 283 } 284 285 /* Overwrite val to GMII if splitter core is enabled. The phymode here 286 * is the actual phy mode on phy hardware, but phy interface from 287 * EMAC core is GMII. 288 */ 289 if (dwmac->splitter_base) 290 val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII; 291 292 /* Assert reset to the enet controller before changing the phy mode */ 293 reset_control_assert(dwmac->stmmac_ocp_rst); 294 reset_control_assert(dwmac->stmmac_rst); 295 296 regmap_read(sys_mgr_base_addr, reg_offset, &ctrl); 297 ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << reg_shift); 298 ctrl |= val << reg_shift; 299 300 if (dwmac->f2h_ptp_ref_clk || 301 phymode == PHY_INTERFACE_MODE_MII || 302 phymode == PHY_INTERFACE_MODE_GMII || 303 phymode == PHY_INTERFACE_MODE_SGMII) { 304 regmap_read(sys_mgr_base_addr, SYSMGR_FPGAGRP_MODULE_REG, 305 &module); 306 module |= (SYSMGR_FPGAGRP_MODULE_EMAC << (reg_shift / 2)); 307 regmap_write(sys_mgr_base_addr, SYSMGR_FPGAGRP_MODULE_REG, 308 module); 309 } 310 311 if (dwmac->f2h_ptp_ref_clk) 312 ctrl |= SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2); 313 else 314 ctrl &= ~(SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << 315 (reg_shift / 2)); 316 317 regmap_write(sys_mgr_base_addr, reg_offset, ctrl); 318 319 /* Deassert reset for the phy configuration to be sampled by 320 * the enet controller, and operation to start in requested mode 321 */ 322 reset_control_deassert(dwmac->stmmac_ocp_rst); 323 reset_control_deassert(dwmac->stmmac_rst); 324 if (phymode == PHY_INTERFACE_MODE_SGMII) 325 socfpga_sgmii_config(dwmac, true); 326 327 return 0; 328 } 329 330 static int socfpga_gen10_set_phy_mode(struct socfpga_dwmac *dwmac) 331 { 332 struct regmap *sys_mgr_base_addr = dwmac->sys_mgr_base_addr; 333 int phymode = socfpga_get_plat_phymode(dwmac); 334 u32 reg_offset = dwmac->reg_offset; 335 u32 reg_shift = dwmac->reg_shift; 336 u32 ctrl, val, module; 337 338 if (socfpga_set_phy_mode_common(phymode, &val)) 339 return -EINVAL; 340 341 /* Overwrite val to GMII if splitter core is enabled. The phymode here 342 * is the actual phy mode on phy hardware, but phy interface from 343 * EMAC core is GMII. 344 */ 345 if (dwmac->splitter_base) 346 val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII; 347 348 /* Assert reset to the enet controller before changing the phy mode */ 349 reset_control_assert(dwmac->stmmac_ocp_rst); 350 reset_control_assert(dwmac->stmmac_rst); 351 352 regmap_read(sys_mgr_base_addr, reg_offset, &ctrl); 353 ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK); 354 ctrl |= val; 355 356 if (dwmac->f2h_ptp_ref_clk || 357 phymode == PHY_INTERFACE_MODE_MII || 358 phymode == PHY_INTERFACE_MODE_GMII || 359 phymode == PHY_INTERFACE_MODE_SGMII) { 360 ctrl |= SYSMGR_GEN10_EMACGRP_CTRL_PTP_REF_CLK_MASK; 361 regmap_read(sys_mgr_base_addr, SYSMGR_FPGAINTF_EMAC_REG, 362 &module); 363 module |= (SYSMGR_FPGAINTF_EMAC_BIT << reg_shift); 364 regmap_write(sys_mgr_base_addr, SYSMGR_FPGAINTF_EMAC_REG, 365 module); 366 } else { 367 ctrl &= ~SYSMGR_GEN10_EMACGRP_CTRL_PTP_REF_CLK_MASK; 368 } 369 370 regmap_write(sys_mgr_base_addr, reg_offset, ctrl); 371 372 /* Deassert reset for the phy configuration to be sampled by 373 * the enet controller, and operation to start in requested mode 374 */ 375 reset_control_deassert(dwmac->stmmac_ocp_rst); 376 reset_control_deassert(dwmac->stmmac_rst); 377 if (phymode == PHY_INTERFACE_MODE_SGMII) 378 socfpga_sgmii_config(dwmac, true); 379 return 0; 380 } 381 382 static int socfpga_dwmac_pcs_init(struct stmmac_priv *priv) 383 { 384 struct socfpga_dwmac *dwmac = priv->plat->bsp_priv; 385 struct regmap_config pcs_regmap_cfg = { 386 .reg_bits = 16, 387 .val_bits = 16, 388 .reg_shift = REGMAP_UPSHIFT(1), 389 }; 390 struct mdio_regmap_config mrc; 391 struct regmap *pcs_regmap; 392 struct phylink_pcs *pcs; 393 struct mii_bus *pcs_bus; 394 395 if (!dwmac->tse_pcs_base) 396 return 0; 397 398 pcs_regmap = devm_regmap_init_mmio(priv->device, dwmac->tse_pcs_base, 399 &pcs_regmap_cfg); 400 if (IS_ERR(pcs_regmap)) 401 return PTR_ERR(pcs_regmap); 402 403 memset(&mrc, 0, sizeof(mrc)); 404 mrc.regmap = pcs_regmap; 405 mrc.parent = priv->device; 406 mrc.valid_addr = 0x0; 407 mrc.autoscan = false; 408 409 /* Can't use ndev->name here because it will not have been initialised, 410 * and in any case, the user can rename network interfaces at runtime. 411 */ 412 snprintf(mrc.name, MII_BUS_ID_SIZE, "%s-pcs-mii", 413 dev_name(priv->device)); 414 pcs_bus = devm_mdio_regmap_register(priv->device, &mrc); 415 if (IS_ERR(pcs_bus)) 416 return PTR_ERR(pcs_bus); 417 418 pcs = lynx_pcs_create_mdiodev(pcs_bus, 0); 419 if (IS_ERR(pcs)) 420 return PTR_ERR(pcs); 421 422 priv->hw->phylink_pcs = pcs; 423 return 0; 424 } 425 426 static void socfpga_dwmac_pcs_exit(struct stmmac_priv *priv) 427 { 428 if (priv->hw->phylink_pcs) 429 lynx_pcs_destroy(priv->hw->phylink_pcs); 430 } 431 432 static int socfpga_dwmac_probe(struct platform_device *pdev) 433 { 434 struct plat_stmmacenet_data *plat_dat; 435 struct stmmac_resources stmmac_res; 436 struct device *dev = &pdev->dev; 437 int ret; 438 struct socfpga_dwmac *dwmac; 439 struct net_device *ndev; 440 struct stmmac_priv *stpriv; 441 const struct socfpga_dwmac_ops *ops; 442 443 ops = device_get_match_data(&pdev->dev); 444 if (!ops) { 445 dev_err(&pdev->dev, "no of match data provided\n"); 446 return -EINVAL; 447 } 448 449 ret = stmmac_get_platform_resources(pdev, &stmmac_res); 450 if (ret) 451 return ret; 452 453 plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac); 454 if (IS_ERR(plat_dat)) 455 return PTR_ERR(plat_dat); 456 457 dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL); 458 if (!dwmac) 459 return -ENOMEM; 460 461 dwmac->stmmac_ocp_rst = devm_reset_control_get_optional(dev, "stmmaceth-ocp"); 462 if (IS_ERR(dwmac->stmmac_ocp_rst)) { 463 ret = PTR_ERR(dwmac->stmmac_ocp_rst); 464 dev_err(dev, "error getting reset control of ocp %d\n", ret); 465 return ret; 466 } 467 468 reset_control_deassert(dwmac->stmmac_ocp_rst); 469 470 ret = socfpga_dwmac_parse_data(dwmac, dev); 471 if (ret) { 472 dev_err(dev, "Unable to parse OF data\n"); 473 return ret; 474 } 475 476 dwmac->ops = ops; 477 plat_dat->bsp_priv = dwmac; 478 plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed; 479 plat_dat->pcs_init = socfpga_dwmac_pcs_init; 480 plat_dat->pcs_exit = socfpga_dwmac_pcs_exit; 481 482 ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); 483 if (ret) 484 return ret; 485 486 ndev = platform_get_drvdata(pdev); 487 stpriv = netdev_priv(ndev); 488 489 /* The socfpga driver needs to control the stmmac reset to set the phy 490 * mode. Create a copy of the core reset handle so it can be used by 491 * the driver later. 492 */ 493 dwmac->stmmac_rst = stpriv->plat->stmmac_rst; 494 495 ret = ops->set_phy_mode(dwmac); 496 if (ret) 497 goto err_dvr_remove; 498 499 return 0; 500 501 err_dvr_remove: 502 stmmac_dvr_remove(&pdev->dev); 503 504 return ret; 505 } 506 507 #ifdef CONFIG_PM_SLEEP 508 static int socfpga_dwmac_resume(struct device *dev) 509 { 510 struct net_device *ndev = dev_get_drvdata(dev); 511 struct stmmac_priv *priv = netdev_priv(ndev); 512 struct socfpga_dwmac *dwmac_priv = get_stmmac_bsp_priv(dev); 513 514 dwmac_priv->ops->set_phy_mode(priv->plat->bsp_priv); 515 516 /* Before the enet controller is suspended, the phy is suspended. 517 * This causes the phy clock to be gated. The enet controller is 518 * resumed before the phy, so the clock is still gated "off" when 519 * the enet controller is resumed. This code makes sure the phy 520 * is "resumed" before reinitializing the enet controller since 521 * the enet controller depends on an active phy clock to complete 522 * a DMA reset. A DMA reset will "time out" if executed 523 * with no phy clock input on the Synopsys enet controller. 524 * Verified through Synopsys Case #8000711656. 525 * 526 * Note that the phy clock is also gated when the phy is isolated. 527 * Phy "suspend" and "isolate" controls are located in phy basic 528 * control register 0, and can be modified by the phy driver 529 * framework. 530 */ 531 if (ndev->phydev) 532 phy_resume(ndev->phydev); 533 534 return stmmac_resume(dev); 535 } 536 #endif /* CONFIG_PM_SLEEP */ 537 538 static int __maybe_unused socfpga_dwmac_runtime_suspend(struct device *dev) 539 { 540 struct net_device *ndev = dev_get_drvdata(dev); 541 struct stmmac_priv *priv = netdev_priv(ndev); 542 543 stmmac_bus_clks_config(priv, false); 544 545 return 0; 546 } 547 548 static int __maybe_unused socfpga_dwmac_runtime_resume(struct device *dev) 549 { 550 struct net_device *ndev = dev_get_drvdata(dev); 551 struct stmmac_priv *priv = netdev_priv(ndev); 552 553 return stmmac_bus_clks_config(priv, true); 554 } 555 556 static const struct dev_pm_ops socfpga_dwmac_pm_ops = { 557 SET_SYSTEM_SLEEP_PM_OPS(stmmac_suspend, socfpga_dwmac_resume) 558 SET_RUNTIME_PM_OPS(socfpga_dwmac_runtime_suspend, socfpga_dwmac_runtime_resume, NULL) 559 }; 560 561 static const struct socfpga_dwmac_ops socfpga_gen5_ops = { 562 .set_phy_mode = socfpga_gen5_set_phy_mode, 563 }; 564 565 static const struct socfpga_dwmac_ops socfpga_gen10_ops = { 566 .set_phy_mode = socfpga_gen10_set_phy_mode, 567 }; 568 569 static const struct of_device_id socfpga_dwmac_match[] = { 570 { .compatible = "altr,socfpga-stmmac", .data = &socfpga_gen5_ops }, 571 { .compatible = "altr,socfpga-stmmac-a10-s10", .data = &socfpga_gen10_ops }, 572 { } 573 }; 574 MODULE_DEVICE_TABLE(of, socfpga_dwmac_match); 575 576 static struct platform_driver socfpga_dwmac_driver = { 577 .probe = socfpga_dwmac_probe, 578 .remove_new = stmmac_pltfr_remove, 579 .driver = { 580 .name = "socfpga-dwmac", 581 .pm = &socfpga_dwmac_pm_ops, 582 .of_match_table = socfpga_dwmac_match, 583 }, 584 }; 585 module_platform_driver(socfpga_dwmac_driver); 586 587 MODULE_DESCRIPTION("Altera SOC DWMAC Specific Glue layer"); 588 MODULE_LICENSE("GPL v2"); 589