1 /******************************************************************************* 2 This contains the functions to handle the platform driver. 3 4 Copyright (C) 2007-2011 STMicroelectronics Ltd 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 The full GNU General Public License is included in this distribution in 16 the file called "COPYING". 17 18 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> 19 *******************************************************************************/ 20 21 #include <linux/platform_device.h> 22 #include <linux/module.h> 23 #include <linux/io.h> 24 #include <linux/of.h> 25 #include <linux/of_net.h> 26 #include <linux/of_device.h> 27 #include <linux/of_mdio.h> 28 29 #include "stmmac.h" 30 #include "stmmac_platform.h" 31 32 #ifdef CONFIG_OF 33 34 /** 35 * dwmac1000_validate_mcast_bins - validates the number of Multicast filter bins 36 * @mcast_bins: Multicast filtering bins 37 * Description: 38 * this function validates the number of Multicast filtering bins specified 39 * by the configuration through the device tree. The Synopsys GMAC supports 40 * 64 bins, 128 bins, or 256 bins. "bins" refer to the division of CRC 41 * number space. 64 bins correspond to 6 bits of the CRC, 128 corresponds 42 * to 7 bits, and 256 refers to 8 bits of the CRC. Any other setting is 43 * invalid and will cause the filtering algorithm to use Multicast 44 * promiscuous mode. 45 */ 46 static int dwmac1000_validate_mcast_bins(int mcast_bins) 47 { 48 int x = mcast_bins; 49 50 switch (x) { 51 case HASH_TABLE_SIZE: 52 case 128: 53 case 256: 54 break; 55 default: 56 x = 0; 57 pr_info("Hash table entries set to unexpected value %d", 58 mcast_bins); 59 break; 60 } 61 return x; 62 } 63 64 /** 65 * dwmac1000_validate_ucast_entries - validate the Unicast address entries 66 * @ucast_entries: number of Unicast address entries 67 * Description: 68 * This function validates the number of Unicast address entries supported 69 * by a particular Synopsys 10/100/1000 controller. The Synopsys controller 70 * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter 71 * logic. This function validates a valid, supported configuration is 72 * selected, and defaults to 1 Unicast address if an unsupported 73 * configuration is selected. 74 */ 75 static int dwmac1000_validate_ucast_entries(int ucast_entries) 76 { 77 int x = ucast_entries; 78 79 switch (x) { 80 case 1: 81 case 32: 82 case 64: 83 case 128: 84 break; 85 default: 86 x = 1; 87 pr_info("Unicast table entries set to unexpected value %d\n", 88 ucast_entries); 89 break; 90 } 91 return x; 92 } 93 94 /** 95 * stmmac_axi_setup - parse DT parameters for programming the AXI register 96 * @pdev: platform device 97 * @priv: driver private struct. 98 * Description: 99 * if required, from device-tree the AXI internal register can be tuned 100 * by using platform parameters. 101 */ 102 static struct stmmac_axi *stmmac_axi_setup(struct platform_device *pdev) 103 { 104 struct device_node *np; 105 struct stmmac_axi *axi; 106 107 np = of_parse_phandle(pdev->dev.of_node, "snps,axi-config", 0); 108 if (!np) 109 return NULL; 110 111 axi = devm_kzalloc(&pdev->dev, sizeof(*axi), GFP_KERNEL); 112 if (!axi) { 113 of_node_put(np); 114 return ERR_PTR(-ENOMEM); 115 } 116 117 axi->axi_lpi_en = of_property_read_bool(np, "snps,lpi_en"); 118 axi->axi_xit_frm = of_property_read_bool(np, "snps,xit_frm"); 119 axi->axi_kbbe = of_property_read_bool(np, "snps,axi_kbbe"); 120 axi->axi_fb = of_property_read_bool(np, "snps,axi_fb"); 121 axi->axi_mb = of_property_read_bool(np, "snps,axi_mb"); 122 axi->axi_rb = of_property_read_bool(np, "snps,axi_rb"); 123 124 if (of_property_read_u32(np, "snps,wr_osr_lmt", &axi->axi_wr_osr_lmt)) 125 axi->axi_wr_osr_lmt = 1; 126 if (of_property_read_u32(np, "snps,rd_osr_lmt", &axi->axi_rd_osr_lmt)) 127 axi->axi_rd_osr_lmt = 1; 128 of_property_read_u32_array(np, "snps,blen", axi->axi_blen, AXI_BLEN); 129 of_node_put(np); 130 131 return axi; 132 } 133 134 /** 135 * stmmac_mtl_setup - parse DT parameters for multiple queues configuration 136 * @pdev: platform device 137 */ 138 static void stmmac_mtl_setup(struct platform_device *pdev, 139 struct plat_stmmacenet_data *plat) 140 { 141 struct device_node *q_node; 142 struct device_node *rx_node; 143 struct device_node *tx_node; 144 u8 queue = 0; 145 146 /* For backwards-compatibility with device trees that don't have any 147 * snps,mtl-rx-config or snps,mtl-tx-config properties, we fall back 148 * to one RX and TX queues each. 149 */ 150 plat->rx_queues_to_use = 1; 151 plat->tx_queues_to_use = 1; 152 153 rx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-rx-config", 0); 154 if (!rx_node) 155 return; 156 157 tx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-tx-config", 0); 158 if (!tx_node) { 159 of_node_put(rx_node); 160 return; 161 } 162 163 /* Processing RX queues common config */ 164 if (of_property_read_u8(rx_node, "snps,rx-queues-to-use", 165 &plat->rx_queues_to_use)) 166 plat->rx_queues_to_use = 1; 167 168 if (of_property_read_bool(rx_node, "snps,rx-sched-sp")) 169 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; 170 else if (of_property_read_bool(rx_node, "snps,rx-sched-wsp")) 171 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_WSP; 172 else 173 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; 174 175 /* Processing individual RX queue config */ 176 for_each_child_of_node(rx_node, q_node) { 177 if (queue >= plat->rx_queues_to_use) 178 break; 179 180 if (of_property_read_bool(q_node, "snps,dcb-algorithm")) 181 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 182 else if (of_property_read_bool(q_node, "snps,avb-algorithm")) 183 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_AVB; 184 else 185 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 186 187 if (of_property_read_u8(q_node, "snps,map-to-dma-channel", 188 &plat->rx_queues_cfg[queue].chan)) 189 plat->rx_queues_cfg[queue].chan = queue; 190 /* TODO: Dynamic mapping to be included in the future */ 191 192 if (of_property_read_u32(q_node, "snps,priority", 193 &plat->rx_queues_cfg[queue].prio)) { 194 plat->rx_queues_cfg[queue].prio = 0; 195 plat->rx_queues_cfg[queue].use_prio = false; 196 } else { 197 plat->rx_queues_cfg[queue].use_prio = true; 198 } 199 200 /* RX queue specific packet type routing */ 201 if (of_property_read_bool(q_node, "snps,route-avcp")) 202 plat->rx_queues_cfg[queue].pkt_route = PACKET_AVCPQ; 203 else if (of_property_read_bool(q_node, "snps,route-ptp")) 204 plat->rx_queues_cfg[queue].pkt_route = PACKET_PTPQ; 205 else if (of_property_read_bool(q_node, "snps,route-dcbcp")) 206 plat->rx_queues_cfg[queue].pkt_route = PACKET_DCBCPQ; 207 else if (of_property_read_bool(q_node, "snps,route-up")) 208 plat->rx_queues_cfg[queue].pkt_route = PACKET_UPQ; 209 else if (of_property_read_bool(q_node, "snps,route-multi-broad")) 210 plat->rx_queues_cfg[queue].pkt_route = PACKET_MCBCQ; 211 else 212 plat->rx_queues_cfg[queue].pkt_route = 0x0; 213 214 queue++; 215 } 216 217 /* Processing TX queues common config */ 218 if (of_property_read_u8(tx_node, "snps,tx-queues-to-use", 219 &plat->tx_queues_to_use)) 220 plat->tx_queues_to_use = 1; 221 222 if (of_property_read_bool(tx_node, "snps,tx-sched-wrr")) 223 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR; 224 else if (of_property_read_bool(tx_node, "snps,tx-sched-wfq")) 225 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WFQ; 226 else if (of_property_read_bool(tx_node, "snps,tx-sched-dwrr")) 227 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_DWRR; 228 else if (of_property_read_bool(tx_node, "snps,tx-sched-sp")) 229 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_SP; 230 else 231 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_SP; 232 233 queue = 0; 234 235 /* Processing individual TX queue config */ 236 for_each_child_of_node(tx_node, q_node) { 237 if (queue >= plat->tx_queues_to_use) 238 break; 239 240 if (of_property_read_u8(q_node, "snps,weight", 241 &plat->tx_queues_cfg[queue].weight)) 242 plat->tx_queues_cfg[queue].weight = 0x10 + queue; 243 244 if (of_property_read_bool(q_node, "snps,dcb-algorithm")) { 245 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 246 } else if (of_property_read_bool(q_node, 247 "snps,avb-algorithm")) { 248 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_AVB; 249 250 /* Credit Base Shaper parameters used by AVB */ 251 if (of_property_read_u32(q_node, "snps,send_slope", 252 &plat->tx_queues_cfg[queue].send_slope)) 253 plat->tx_queues_cfg[queue].send_slope = 0x0; 254 if (of_property_read_u32(q_node, "snps,idle_slope", 255 &plat->tx_queues_cfg[queue].idle_slope)) 256 plat->tx_queues_cfg[queue].idle_slope = 0x0; 257 if (of_property_read_u32(q_node, "snps,high_credit", 258 &plat->tx_queues_cfg[queue].high_credit)) 259 plat->tx_queues_cfg[queue].high_credit = 0x0; 260 if (of_property_read_u32(q_node, "snps,low_credit", 261 &plat->tx_queues_cfg[queue].low_credit)) 262 plat->tx_queues_cfg[queue].low_credit = 0x0; 263 } else { 264 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 265 } 266 267 if (of_property_read_u32(q_node, "snps,priority", 268 &plat->tx_queues_cfg[queue].prio)) { 269 plat->tx_queues_cfg[queue].prio = 0; 270 plat->tx_queues_cfg[queue].use_prio = false; 271 } else { 272 plat->tx_queues_cfg[queue].use_prio = true; 273 } 274 275 queue++; 276 } 277 278 of_node_put(rx_node); 279 of_node_put(tx_node); 280 of_node_put(q_node); 281 } 282 283 /** 284 * stmmac_dt_phy - parse device-tree driver parameters to allocate PHY resources 285 * @plat: driver data platform structure 286 * @np: device tree node 287 * @dev: device pointer 288 * Description: 289 * The mdio bus will be allocated in case of a phy transceiver is on board; 290 * it will be NULL if the fixed-link is configured. 291 * If there is the "snps,dwmac-mdio" sub-node the mdio will be allocated 292 * in any case (for DSA, mdio must be registered even if fixed-link). 293 * The table below sums the supported configurations: 294 * ------------------------------- 295 * snps,phy-addr | Y 296 * ------------------------------- 297 * phy-handle | Y 298 * ------------------------------- 299 * fixed-link | N 300 * ------------------------------- 301 * snps,dwmac-mdio | 302 * even if | Y 303 * fixed-link | 304 * ------------------------------- 305 * 306 * It returns 0 in case of success otherwise -ENODEV. 307 */ 308 static int stmmac_dt_phy(struct plat_stmmacenet_data *plat, 309 struct device_node *np, struct device *dev) 310 { 311 bool mdio = true; 312 static const struct of_device_id need_mdio_ids[] = { 313 { .compatible = "snps,dwc-qos-ethernet-4.10" }, 314 {}, 315 }; 316 317 /* If phy-handle property is passed from DT, use it as the PHY */ 318 plat->phy_node = of_parse_phandle(np, "phy-handle", 0); 319 if (plat->phy_node) 320 dev_dbg(dev, "Found phy-handle subnode\n"); 321 322 /* If phy-handle is not specified, check if we have a fixed-phy */ 323 if (!plat->phy_node && of_phy_is_fixed_link(np)) { 324 if ((of_phy_register_fixed_link(np) < 0)) 325 return -ENODEV; 326 327 dev_dbg(dev, "Found fixed-link subnode\n"); 328 plat->phy_node = of_node_get(np); 329 mdio = false; 330 } 331 332 if (of_match_node(need_mdio_ids, np)) { 333 plat->mdio_node = of_get_child_by_name(np, "mdio"); 334 } else { 335 /** 336 * If snps,dwmac-mdio is passed from DT, always register 337 * the MDIO 338 */ 339 for_each_child_of_node(np, plat->mdio_node) { 340 if (of_device_is_compatible(plat->mdio_node, 341 "snps,dwmac-mdio")) 342 break; 343 } 344 } 345 346 if (plat->mdio_node) { 347 dev_dbg(dev, "Found MDIO subnode\n"); 348 mdio = true; 349 } 350 351 if (mdio) 352 plat->mdio_bus_data = 353 devm_kzalloc(dev, sizeof(struct stmmac_mdio_bus_data), 354 GFP_KERNEL); 355 return 0; 356 } 357 358 /** 359 * stmmac_probe_config_dt - parse device-tree driver parameters 360 * @pdev: platform_device structure 361 * @mac: MAC address to use 362 * Description: 363 * this function is to read the driver parameters from device-tree and 364 * set some private fields that will be used by the main at runtime. 365 */ 366 struct plat_stmmacenet_data * 367 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 368 { 369 struct device_node *np = pdev->dev.of_node; 370 struct plat_stmmacenet_data *plat; 371 struct stmmac_dma_cfg *dma_cfg; 372 373 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); 374 if (!plat) 375 return ERR_PTR(-ENOMEM); 376 377 *mac = of_get_mac_address(np); 378 plat->interface = of_get_phy_mode(np); 379 380 /* Get max speed of operation from device tree */ 381 if (of_property_read_u32(np, "max-speed", &plat->max_speed)) 382 plat->max_speed = -1; 383 384 plat->bus_id = of_alias_get_id(np, "ethernet"); 385 if (plat->bus_id < 0) 386 plat->bus_id = 0; 387 388 /* Default to phy auto-detection */ 389 plat->phy_addr = -1; 390 391 /* "snps,phy-addr" is not a standard property. Mark it as deprecated 392 * and warn of its use. Remove this when phy node support is added. 393 */ 394 if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0) 395 dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n"); 396 397 /* To Configure PHY by using all device-tree supported properties */ 398 if (stmmac_dt_phy(plat, np, &pdev->dev)) 399 return ERR_PTR(-ENODEV); 400 401 of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size); 402 403 of_property_read_u32(np, "rx-fifo-depth", &plat->rx_fifo_size); 404 405 plat->force_sf_dma_mode = 406 of_property_read_bool(np, "snps,force_sf_dma_mode"); 407 408 plat->en_tx_lpi_clockgating = 409 of_property_read_bool(np, "snps,en-tx-lpi-clockgating"); 410 411 /* Set the maxmtu to a default of JUMBO_LEN in case the 412 * parameter is not present in the device tree. 413 */ 414 plat->maxmtu = JUMBO_LEN; 415 416 /* Set default value for multicast hash bins */ 417 plat->multicast_filter_bins = HASH_TABLE_SIZE; 418 419 /* Set default value for unicast filter entries */ 420 plat->unicast_filter_entries = 1; 421 422 /* 423 * Currently only the properties needed on SPEAr600 424 * are provided. All other properties should be added 425 * once needed on other platforms. 426 */ 427 if (of_device_is_compatible(np, "st,spear600-gmac") || 428 of_device_is_compatible(np, "snps,dwmac-3.50a") || 429 of_device_is_compatible(np, "snps,dwmac-3.70a") || 430 of_device_is_compatible(np, "snps,dwmac")) { 431 /* Note that the max-frame-size parameter as defined in the 432 * ePAPR v1.1 spec is defined as max-frame-size, it's 433 * actually used as the IEEE definition of MAC Client 434 * data, or MTU. The ePAPR specification is confusing as 435 * the definition is max-frame-size, but usage examples 436 * are clearly MTUs 437 */ 438 of_property_read_u32(np, "max-frame-size", &plat->maxmtu); 439 of_property_read_u32(np, "snps,multicast-filter-bins", 440 &plat->multicast_filter_bins); 441 of_property_read_u32(np, "snps,perfect-filter-entries", 442 &plat->unicast_filter_entries); 443 plat->unicast_filter_entries = dwmac1000_validate_ucast_entries( 444 plat->unicast_filter_entries); 445 plat->multicast_filter_bins = dwmac1000_validate_mcast_bins( 446 plat->multicast_filter_bins); 447 plat->has_gmac = 1; 448 plat->pmt = 1; 449 } 450 451 if (of_device_is_compatible(np, "snps,dwmac-4.00") || 452 of_device_is_compatible(np, "snps,dwmac-4.10a")) { 453 plat->has_gmac4 = 1; 454 plat->has_gmac = 0; 455 plat->pmt = 1; 456 plat->tso_en = of_property_read_bool(np, "snps,tso"); 457 } 458 459 if (of_device_is_compatible(np, "snps,dwmac-3.610") || 460 of_device_is_compatible(np, "snps,dwmac-3.710")) { 461 plat->enh_desc = 1; 462 plat->bugged_jumbo = 1; 463 plat->force_sf_dma_mode = 1; 464 } 465 466 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), 467 GFP_KERNEL); 468 if (!dma_cfg) { 469 stmmac_remove_config_dt(pdev, plat); 470 return ERR_PTR(-ENOMEM); 471 } 472 plat->dma_cfg = dma_cfg; 473 474 of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); 475 if (!dma_cfg->pbl) 476 dma_cfg->pbl = DEFAULT_DMA_PBL; 477 of_property_read_u32(np, "snps,txpbl", &dma_cfg->txpbl); 478 of_property_read_u32(np, "snps,rxpbl", &dma_cfg->rxpbl); 479 dma_cfg->pblx8 = !of_property_read_bool(np, "snps,no-pbl-x8"); 480 481 dma_cfg->aal = of_property_read_bool(np, "snps,aal"); 482 dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst"); 483 dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst"); 484 485 plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode"); 486 if (plat->force_thresh_dma_mode) { 487 plat->force_sf_dma_mode = 0; 488 pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set."); 489 } 490 491 of_property_read_u32(np, "snps,ps-speed", &plat->mac_port_sel_speed); 492 493 plat->axi = stmmac_axi_setup(pdev); 494 495 stmmac_mtl_setup(pdev, plat); 496 497 /* clock setup */ 498 plat->stmmac_clk = devm_clk_get(&pdev->dev, 499 STMMAC_RESOURCE_NAME); 500 if (IS_ERR(plat->stmmac_clk)) { 501 dev_warn(&pdev->dev, "Cannot get CSR clock\n"); 502 plat->stmmac_clk = NULL; 503 } 504 clk_prepare_enable(plat->stmmac_clk); 505 506 plat->pclk = devm_clk_get(&pdev->dev, "pclk"); 507 if (IS_ERR(plat->pclk)) { 508 if (PTR_ERR(plat->pclk) == -EPROBE_DEFER) 509 goto error_pclk_get; 510 511 plat->pclk = NULL; 512 } 513 clk_prepare_enable(plat->pclk); 514 515 /* Fall-back to main clock in case of no PTP ref is passed */ 516 plat->clk_ptp_ref = devm_clk_get(&pdev->dev, "ptp_ref"); 517 if (IS_ERR(plat->clk_ptp_ref)) { 518 plat->clk_ptp_rate = clk_get_rate(plat->stmmac_clk); 519 plat->clk_ptp_ref = NULL; 520 dev_warn(&pdev->dev, "PTP uses main clock\n"); 521 } else { 522 plat->clk_ptp_rate = clk_get_rate(plat->clk_ptp_ref); 523 dev_dbg(&pdev->dev, "PTP rate %d\n", plat->clk_ptp_rate); 524 } 525 526 plat->stmmac_rst = devm_reset_control_get(&pdev->dev, 527 STMMAC_RESOURCE_NAME); 528 if (IS_ERR(plat->stmmac_rst)) { 529 if (PTR_ERR(plat->stmmac_rst) == -EPROBE_DEFER) 530 goto error_hw_init; 531 532 dev_info(&pdev->dev, "no reset control found\n"); 533 plat->stmmac_rst = NULL; 534 } 535 536 return plat; 537 538 error_hw_init: 539 clk_disable_unprepare(plat->pclk); 540 error_pclk_get: 541 clk_disable_unprepare(plat->stmmac_clk); 542 543 return ERR_PTR(-EPROBE_DEFER); 544 } 545 546 /** 547 * stmmac_remove_config_dt - undo the effects of stmmac_probe_config_dt() 548 * @pdev: platform_device structure 549 * @plat: driver data platform structure 550 * 551 * Release resources claimed by stmmac_probe_config_dt(). 552 */ 553 void stmmac_remove_config_dt(struct platform_device *pdev, 554 struct plat_stmmacenet_data *plat) 555 { 556 struct device_node *np = pdev->dev.of_node; 557 558 if (of_phy_is_fixed_link(np)) 559 of_phy_deregister_fixed_link(np); 560 of_node_put(plat->phy_node); 561 of_node_put(plat->mdio_node); 562 } 563 #else 564 struct plat_stmmacenet_data * 565 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 566 { 567 return ERR_PTR(-EINVAL); 568 } 569 570 void stmmac_remove_config_dt(struct platform_device *pdev, 571 struct plat_stmmacenet_data *plat) 572 { 573 } 574 #endif /* CONFIG_OF */ 575 EXPORT_SYMBOL_GPL(stmmac_probe_config_dt); 576 EXPORT_SYMBOL_GPL(stmmac_remove_config_dt); 577 578 int stmmac_get_platform_resources(struct platform_device *pdev, 579 struct stmmac_resources *stmmac_res) 580 { 581 struct resource *res; 582 583 memset(stmmac_res, 0, sizeof(*stmmac_res)); 584 585 /* Get IRQ information early to have an ability to ask for deferred 586 * probe if needed before we went too far with resource allocation. 587 */ 588 stmmac_res->irq = platform_get_irq_byname(pdev, "macirq"); 589 if (stmmac_res->irq < 0) { 590 if (stmmac_res->irq != -EPROBE_DEFER) { 591 dev_err(&pdev->dev, 592 "MAC IRQ configuration information not found\n"); 593 } 594 return stmmac_res->irq; 595 } 596 597 /* On some platforms e.g. SPEAr the wake up irq differs from the mac irq 598 * The external wake up irq can be passed through the platform code 599 * named as "eth_wake_irq" 600 * 601 * In case the wake up interrupt is not passed from the platform 602 * so the driver will continue to use the mac irq (ndev->irq) 603 */ 604 stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq"); 605 if (stmmac_res->wol_irq < 0) { 606 if (stmmac_res->wol_irq == -EPROBE_DEFER) 607 return -EPROBE_DEFER; 608 stmmac_res->wol_irq = stmmac_res->irq; 609 } 610 611 stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi"); 612 if (stmmac_res->lpi_irq == -EPROBE_DEFER) 613 return -EPROBE_DEFER; 614 615 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 616 stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res); 617 618 return PTR_ERR_OR_ZERO(stmmac_res->addr); 619 } 620 EXPORT_SYMBOL_GPL(stmmac_get_platform_resources); 621 622 /** 623 * stmmac_pltfr_remove 624 * @pdev: platform device pointer 625 * Description: this function calls the main to free the net resources 626 * and calls the platforms hook and release the resources (e.g. mem). 627 */ 628 int stmmac_pltfr_remove(struct platform_device *pdev) 629 { 630 struct net_device *ndev = platform_get_drvdata(pdev); 631 struct stmmac_priv *priv = netdev_priv(ndev); 632 struct plat_stmmacenet_data *plat = priv->plat; 633 int ret = stmmac_dvr_remove(&pdev->dev); 634 635 if (plat->exit) 636 plat->exit(pdev, plat->bsp_priv); 637 638 stmmac_remove_config_dt(pdev, plat); 639 640 return ret; 641 } 642 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove); 643 644 #ifdef CONFIG_PM_SLEEP 645 /** 646 * stmmac_pltfr_suspend 647 * @dev: device pointer 648 * Description: this function is invoked when suspend the driver and it direcly 649 * call the main suspend function and then, if required, on some platform, it 650 * can call an exit helper. 651 */ 652 static int stmmac_pltfr_suspend(struct device *dev) 653 { 654 int ret; 655 struct net_device *ndev = dev_get_drvdata(dev); 656 struct stmmac_priv *priv = netdev_priv(ndev); 657 struct platform_device *pdev = to_platform_device(dev); 658 659 ret = stmmac_suspend(dev); 660 if (priv->plat->exit) 661 priv->plat->exit(pdev, priv->plat->bsp_priv); 662 663 return ret; 664 } 665 666 /** 667 * stmmac_pltfr_resume 668 * @dev: device pointer 669 * Description: this function is invoked when resume the driver before calling 670 * the main resume function, on some platforms, it can call own init helper 671 * if required. 672 */ 673 static int stmmac_pltfr_resume(struct device *dev) 674 { 675 struct net_device *ndev = dev_get_drvdata(dev); 676 struct stmmac_priv *priv = netdev_priv(ndev); 677 struct platform_device *pdev = to_platform_device(dev); 678 679 if (priv->plat->init) 680 priv->plat->init(pdev, priv->plat->bsp_priv); 681 682 return stmmac_resume(dev); 683 } 684 #endif /* CONFIG_PM_SLEEP */ 685 686 SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend, 687 stmmac_pltfr_resume); 688 EXPORT_SYMBOL_GPL(stmmac_pltfr_pm_ops); 689 690 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet platform support"); 691 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); 692 MODULE_LICENSE("GPL"); 693