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 
socfpga_dwmac_fix_mac_speed(void * priv,unsigned int speed,unsigned int mode)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 
socfpga_dwmac_parse_data(struct socfpga_dwmac * dwmac,struct device * dev)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, &reg_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, &reg_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 
socfpga_get_plat_phymode(struct socfpga_dwmac * dwmac)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 
socfpga_sgmii_config(struct socfpga_dwmac * dwmac,bool enable)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 
socfpga_set_phy_mode_common(int phymode,u32 * val)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 
socfpga_gen5_set_phy_mode(struct socfpga_dwmac * dwmac)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 
socfpga_gen10_set_phy_mode(struct socfpga_dwmac * dwmac)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 
socfpga_dwmac_probe(struct platform_device * pdev)382 static int socfpga_dwmac_probe(struct platform_device *pdev)
383 {
384 	struct plat_stmmacenet_data *plat_dat;
385 	struct stmmac_resources stmmac_res;
386 	struct device		*dev = &pdev->dev;
387 	int			ret;
388 	struct socfpga_dwmac	*dwmac;
389 	struct net_device	*ndev;
390 	struct stmmac_priv	*stpriv;
391 	const struct socfpga_dwmac_ops *ops;
392 
393 	ops = device_get_match_data(&pdev->dev);
394 	if (!ops) {
395 		dev_err(&pdev->dev, "no of match data provided\n");
396 		return -EINVAL;
397 	}
398 
399 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
400 	if (ret)
401 		return ret;
402 
403 	plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
404 	if (IS_ERR(plat_dat))
405 		return PTR_ERR(plat_dat);
406 
407 	dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL);
408 	if (!dwmac) {
409 		ret = -ENOMEM;
410 		goto err_remove_config_dt;
411 	}
412 
413 	dwmac->stmmac_ocp_rst = devm_reset_control_get_optional(dev, "stmmaceth-ocp");
414 	if (IS_ERR(dwmac->stmmac_ocp_rst)) {
415 		ret = PTR_ERR(dwmac->stmmac_ocp_rst);
416 		dev_err(dev, "error getting reset control of ocp %d\n", ret);
417 		goto err_remove_config_dt;
418 	}
419 
420 	reset_control_deassert(dwmac->stmmac_ocp_rst);
421 
422 	ret = socfpga_dwmac_parse_data(dwmac, dev);
423 	if (ret) {
424 		dev_err(dev, "Unable to parse OF data\n");
425 		goto err_remove_config_dt;
426 	}
427 
428 	dwmac->ops = ops;
429 	plat_dat->bsp_priv = dwmac;
430 	plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed;
431 
432 	plat_dat->riwt_off = 1;
433 
434 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
435 	if (ret)
436 		goto err_remove_config_dt;
437 
438 	ndev = platform_get_drvdata(pdev);
439 	stpriv = netdev_priv(ndev);
440 
441 	/* The socfpga driver needs to control the stmmac reset to set the phy
442 	 * mode. Create a copy of the core reset handle so it can be used by
443 	 * the driver later.
444 	 */
445 	dwmac->stmmac_rst = stpriv->plat->stmmac_rst;
446 
447 	ret = ops->set_phy_mode(dwmac);
448 	if (ret)
449 		goto err_dvr_remove;
450 
451 	/* Create a regmap for the PCS so that it can be used by the PCS driver,
452 	 * if we have such a PCS
453 	 */
454 	if (dwmac->tse_pcs_base) {
455 		struct regmap_config pcs_regmap_cfg;
456 		struct mdio_regmap_config mrc;
457 		struct regmap *pcs_regmap;
458 		struct mii_bus *pcs_bus;
459 
460 		memset(&pcs_regmap_cfg, 0, sizeof(pcs_regmap_cfg));
461 		memset(&mrc, 0, sizeof(mrc));
462 
463 		pcs_regmap_cfg.reg_bits = 16;
464 		pcs_regmap_cfg.val_bits = 16;
465 		pcs_regmap_cfg.reg_shift = REGMAP_UPSHIFT(1);
466 
467 		pcs_regmap = devm_regmap_init_mmio(&pdev->dev, dwmac->tse_pcs_base,
468 						   &pcs_regmap_cfg);
469 		if (IS_ERR(pcs_regmap)) {
470 			ret = PTR_ERR(pcs_regmap);
471 			goto err_dvr_remove;
472 		}
473 
474 		mrc.regmap = pcs_regmap;
475 		mrc.parent = &pdev->dev;
476 		mrc.valid_addr = 0x0;
477 		mrc.autoscan = false;
478 
479 		snprintf(mrc.name, MII_BUS_ID_SIZE, "%s-pcs-mii", ndev->name);
480 		pcs_bus = devm_mdio_regmap_register(&pdev->dev, &mrc);
481 		if (IS_ERR(pcs_bus)) {
482 			ret = PTR_ERR(pcs_bus);
483 			goto err_dvr_remove;
484 		}
485 
486 		stpriv->hw->lynx_pcs = lynx_pcs_create_mdiodev(pcs_bus, 0);
487 		if (IS_ERR(stpriv->hw->lynx_pcs)) {
488 			ret = PTR_ERR(stpriv->hw->lynx_pcs);
489 			goto err_dvr_remove;
490 		}
491 	}
492 
493 	return 0;
494 
495 err_dvr_remove:
496 	stmmac_dvr_remove(&pdev->dev);
497 err_remove_config_dt:
498 	stmmac_remove_config_dt(pdev, plat_dat);
499 
500 	return ret;
501 }
502 
socfpga_dwmac_remove(struct platform_device * pdev)503 static void socfpga_dwmac_remove(struct platform_device *pdev)
504 {
505 	struct net_device *ndev = platform_get_drvdata(pdev);
506 	struct stmmac_priv *priv = netdev_priv(ndev);
507 	struct phylink_pcs *pcs = priv->hw->lynx_pcs;
508 
509 	stmmac_pltfr_remove(pdev);
510 
511 	lynx_pcs_destroy(pcs);
512 }
513 
514 #ifdef CONFIG_PM_SLEEP
socfpga_dwmac_resume(struct device * dev)515 static int socfpga_dwmac_resume(struct device *dev)
516 {
517 	struct net_device *ndev = dev_get_drvdata(dev);
518 	struct stmmac_priv *priv = netdev_priv(ndev);
519 	struct socfpga_dwmac *dwmac_priv = get_stmmac_bsp_priv(dev);
520 
521 	dwmac_priv->ops->set_phy_mode(priv->plat->bsp_priv);
522 
523 	/* Before the enet controller is suspended, the phy is suspended.
524 	 * This causes the phy clock to be gated. The enet controller is
525 	 * resumed before the phy, so the clock is still gated "off" when
526 	 * the enet controller is resumed. This code makes sure the phy
527 	 * is "resumed" before reinitializing the enet controller since
528 	 * the enet controller depends on an active phy clock to complete
529 	 * a DMA reset. A DMA reset will "time out" if executed
530 	 * with no phy clock input on the Synopsys enet controller.
531 	 * Verified through Synopsys Case #8000711656.
532 	 *
533 	 * Note that the phy clock is also gated when the phy is isolated.
534 	 * Phy "suspend" and "isolate" controls are located in phy basic
535 	 * control register 0, and can be modified by the phy driver
536 	 * framework.
537 	 */
538 	if (ndev->phydev)
539 		phy_resume(ndev->phydev);
540 
541 	return stmmac_resume(dev);
542 }
543 #endif /* CONFIG_PM_SLEEP */
544 
socfpga_dwmac_runtime_suspend(struct device * dev)545 static int __maybe_unused socfpga_dwmac_runtime_suspend(struct device *dev)
546 {
547 	struct net_device *ndev = dev_get_drvdata(dev);
548 	struct stmmac_priv *priv = netdev_priv(ndev);
549 
550 	stmmac_bus_clks_config(priv, false);
551 
552 	return 0;
553 }
554 
socfpga_dwmac_runtime_resume(struct device * dev)555 static int __maybe_unused socfpga_dwmac_runtime_resume(struct device *dev)
556 {
557 	struct net_device *ndev = dev_get_drvdata(dev);
558 	struct stmmac_priv *priv = netdev_priv(ndev);
559 
560 	return stmmac_bus_clks_config(priv, true);
561 }
562 
563 static const struct dev_pm_ops socfpga_dwmac_pm_ops = {
564 	SET_SYSTEM_SLEEP_PM_OPS(stmmac_suspend, socfpga_dwmac_resume)
565 	SET_RUNTIME_PM_OPS(socfpga_dwmac_runtime_suspend, socfpga_dwmac_runtime_resume, NULL)
566 };
567 
568 static const struct socfpga_dwmac_ops socfpga_gen5_ops = {
569 	.set_phy_mode = socfpga_gen5_set_phy_mode,
570 };
571 
572 static const struct socfpga_dwmac_ops socfpga_gen10_ops = {
573 	.set_phy_mode = socfpga_gen10_set_phy_mode,
574 };
575 
576 static const struct of_device_id socfpga_dwmac_match[] = {
577 	{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gen5_ops },
578 	{ .compatible = "altr,socfpga-stmmac-a10-s10", .data = &socfpga_gen10_ops },
579 	{ }
580 };
581 MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
582 
583 static struct platform_driver socfpga_dwmac_driver = {
584 	.probe  = socfpga_dwmac_probe,
585 	.remove_new = socfpga_dwmac_remove,
586 	.driver = {
587 		.name           = "socfpga-dwmac",
588 		.pm		= &socfpga_dwmac_pm_ops,
589 		.of_match_table = socfpga_dwmac_match,
590 	},
591 };
592 module_platform_driver(socfpga_dwmac_driver);
593 
594 MODULE_LICENSE("GPL v2");
595