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1// SPDX-License-Identifier: GPL-2.0+
2/* drivers/net/phy/realtek.c
3 *
4 * Driver for Realtek PHYs
5 *
6 * Author: Johnson Leung <r58129@freescale.com>
7 *
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
9 */
10#include <linux/bitops.h>
11#include <linux/of.h>
12#include <linux/phy.h>
13#include <linux/module.h>
14#include <linux/delay.h>
15#include <linux/clk.h>
16
17#define RTL821x_PHYSR 0x11
18#define RTL821x_PHYSR_DUPLEX BIT(13)
19#define RTL821x_PHYSR_SPEED GENMASK(15, 14)
20
21#define RTL821x_INER 0x12
22#define RTL8211B_INER_INIT 0x6400
23#define RTL8211E_INER_LINK_STATUS BIT(10)
24#define RTL8211F_INER_LINK_STATUS BIT(4)
25
26#define RTL821x_INSR 0x13
27
28#define RTL821x_EXT_PAGE_SELECT 0x1e
29#define RTL821x_PAGE_SELECT 0x1f
30
31#define RTL8211F_PHYCR1 0x18
32#define RTL8211F_PHYCR2 0x19
33#define RTL8211F_INSR 0x1d
34
35#define RTL8211F_TX_DELAY BIT(8)
36#define RTL8211F_RX_DELAY BIT(3)
37
38#define RTL8211F_ALDPS_PLL_OFF BIT(1)
39#define RTL8211F_ALDPS_ENABLE BIT(2)
40#define RTL8211F_ALDPS_XTAL_OFF BIT(12)
41
42#define RTL8211E_CTRL_DELAY BIT(13)
43#define RTL8211E_TX_DELAY BIT(12)
44#define RTL8211E_RX_DELAY BIT(11)
45
46#define RTL8211F_CLKOUT_EN BIT(0)
47
48#define RTL8201F_ISR 0x1e
49#define RTL8201F_ISR_ANERR BIT(15)
50#define RTL8201F_ISR_DUPLEX BIT(13)
51#define RTL8201F_ISR_LINK BIT(11)
52#define RTL8201F_ISR_MASK (RTL8201F_ISR_ANERR | \
53 RTL8201F_ISR_DUPLEX | \
54 RTL8201F_ISR_LINK)
55#define RTL8201F_IER 0x13
56
57#define RTL8366RB_POWER_SAVE 0x15
58#define RTL8366RB_POWER_SAVE_ON BIT(12)
59
60#define RTL_SUPPORTS_5000FULL BIT(14)
61#define RTL_SUPPORTS_2500FULL BIT(13)
62#define RTL_SUPPORTS_10000FULL BIT(0)
63#define RTL_ADV_2500FULL BIT(7)
64#define RTL_LPADV_10000FULL BIT(11)
65#define RTL_LPADV_5000FULL BIT(6)
66#define RTL_LPADV_2500FULL BIT(5)
67
68#define RTL9000A_GINMR 0x14
69#define RTL9000A_GINMR_LINK_STATUS BIT(4)
70
71#define RTLGEN_SPEED_MASK 0x0630
72
73#define RTL_GENERIC_PHYID 0x001cc800
74#define RTL_8211FVD_PHYID 0x001cc878
75
76MODULE_DESCRIPTION("Realtek PHY driver");
77MODULE_AUTHOR("Johnson Leung");
78MODULE_LICENSE("GPL");
79
80struct rtl821x_priv {
81 u16 phycr1;
82 u16 phycr2;
83 bool has_phycr2;
84 struct clk *clk;
85};
86
87static int rtl821x_read_page(struct phy_device *phydev)
88{
89 return __phy_read(phydev, RTL821x_PAGE_SELECT);
90}
91
92static int rtl821x_write_page(struct phy_device *phydev, int page)
93{
94 return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
95}
96
97static int rtl821x_probe(struct phy_device *phydev)
98{
99 struct device *dev = &phydev->mdio.dev;
100 struct rtl821x_priv *priv;
101 u32 phy_id = phydev->drv->phy_id;
102 int ret;
103
104 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
105 if (!priv)
106 return -ENOMEM;
107
108 priv->clk = devm_clk_get_optional_enabled(dev, NULL);
109 if (IS_ERR(priv->clk))
110 return dev_err_probe(dev, PTR_ERR(priv->clk),
111 "failed to get phy clock\n");
112
113 ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR1);
114 if (ret < 0)
115 return ret;
116
117 priv->phycr1 = ret & (RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF);
118 if (of_property_read_bool(dev->of_node, "realtek,aldps-enable"))
119 priv->phycr1 |= RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF;
120
121 priv->has_phycr2 = !(phy_id == RTL_8211FVD_PHYID);
122 if (priv->has_phycr2) {
123 ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR2);
124 if (ret < 0)
125 return ret;
126
127 priv->phycr2 = ret & RTL8211F_CLKOUT_EN;
128 if (of_property_read_bool(dev->of_node, "realtek,clkout-disable"))
129 priv->phycr2 &= ~RTL8211F_CLKOUT_EN;
130 }
131
132 phydev->priv = priv;
133
134 return 0;
135}
136
137static int rtl8201_ack_interrupt(struct phy_device *phydev)
138{
139 int err;
140
141 err = phy_read(phydev, RTL8201F_ISR);
142
143 return (err < 0) ? err : 0;
144}
145
146static int rtl821x_ack_interrupt(struct phy_device *phydev)
147{
148 int err;
149
150 err = phy_read(phydev, RTL821x_INSR);
151
152 return (err < 0) ? err : 0;
153}
154
155static int rtl8211f_ack_interrupt(struct phy_device *phydev)
156{
157 int err;
158
159 err = phy_read_paged(phydev, 0xa43, RTL8211F_INSR);
160
161 return (err < 0) ? err : 0;
162}
163
164static int rtl8201_config_intr(struct phy_device *phydev)
165{
166 u16 val;
167 int err;
168
169 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
170 err = rtl8201_ack_interrupt(phydev);
171 if (err)
172 return err;
173
174 val = BIT(13) | BIT(12) | BIT(11);
175 err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
176 } else {
177 val = 0;
178 err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
179 if (err)
180 return err;
181
182 err = rtl8201_ack_interrupt(phydev);
183 }
184
185 return err;
186}
187
188static int rtl8211b_config_intr(struct phy_device *phydev)
189{
190 int err;
191
192 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
193 err = rtl821x_ack_interrupt(phydev);
194 if (err)
195 return err;
196
197 err = phy_write(phydev, RTL821x_INER,
198 RTL8211B_INER_INIT);
199 } else {
200 err = phy_write(phydev, RTL821x_INER, 0);
201 if (err)
202 return err;
203
204 err = rtl821x_ack_interrupt(phydev);
205 }
206
207 return err;
208}
209
210static int rtl8211e_config_intr(struct phy_device *phydev)
211{
212 int err;
213
214 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
215 err = rtl821x_ack_interrupt(phydev);
216 if (err)
217 return err;
218
219 err = phy_write(phydev, RTL821x_INER,
220 RTL8211E_INER_LINK_STATUS);
221 } else {
222 err = phy_write(phydev, RTL821x_INER, 0);
223 if (err)
224 return err;
225
226 err = rtl821x_ack_interrupt(phydev);
227 }
228
229 return err;
230}
231
232static int rtl8211f_config_intr(struct phy_device *phydev)
233{
234 u16 val;
235 int err;
236
237 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
238 err = rtl8211f_ack_interrupt(phydev);
239 if (err)
240 return err;
241
242 val = RTL8211F_INER_LINK_STATUS;
243 err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
244 } else {
245 val = 0;
246 err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
247 if (err)
248 return err;
249
250 err = rtl8211f_ack_interrupt(phydev);
251 }
252
253 return err;
254}
255
256static irqreturn_t rtl8201_handle_interrupt(struct phy_device *phydev)
257{
258 int irq_status;
259
260 irq_status = phy_read(phydev, RTL8201F_ISR);
261 if (irq_status < 0) {
262 phy_error(phydev);
263 return IRQ_NONE;
264 }
265
266 if (!(irq_status & RTL8201F_ISR_MASK))
267 return IRQ_NONE;
268
269 phy_trigger_machine(phydev);
270
271 return IRQ_HANDLED;
272}
273
274static irqreturn_t rtl821x_handle_interrupt(struct phy_device *phydev)
275{
276 int irq_status, irq_enabled;
277
278 irq_status = phy_read(phydev, RTL821x_INSR);
279 if (irq_status < 0) {
280 phy_error(phydev);
281 return IRQ_NONE;
282 }
283
284 irq_enabled = phy_read(phydev, RTL821x_INER);
285 if (irq_enabled < 0) {
286 phy_error(phydev);
287 return IRQ_NONE;
288 }
289
290 if (!(irq_status & irq_enabled))
291 return IRQ_NONE;
292
293 phy_trigger_machine(phydev);
294
295 return IRQ_HANDLED;
296}
297
298static irqreturn_t rtl8211f_handle_interrupt(struct phy_device *phydev)
299{
300 int irq_status;
301
302 irq_status = phy_read_paged(phydev, 0xa43, RTL8211F_INSR);
303 if (irq_status < 0) {
304 phy_error(phydev);
305 return IRQ_NONE;
306 }
307
308 if (!(irq_status & RTL8211F_INER_LINK_STATUS))
309 return IRQ_NONE;
310
311 phy_trigger_machine(phydev);
312
313 return IRQ_HANDLED;
314}
315
316static int rtl8211_config_aneg(struct phy_device *phydev)
317{
318 int ret;
319
320 ret = genphy_config_aneg(phydev);
321 if (ret < 0)
322 return ret;
323
324 /* Quirk was copied from vendor driver. Unfortunately it includes no
325 * description of the magic numbers.
326 */
327 if (phydev->speed == SPEED_100 && phydev->autoneg == AUTONEG_DISABLE) {
328 phy_write(phydev, 0x17, 0x2138);
329 phy_write(phydev, 0x0e, 0x0260);
330 } else {
331 phy_write(phydev, 0x17, 0x2108);
332 phy_write(phydev, 0x0e, 0x0000);
333 }
334
335 return 0;
336}
337
338static int rtl8211c_config_init(struct phy_device *phydev)
339{
340 /* RTL8211C has an issue when operating in Gigabit slave mode */
341 return phy_set_bits(phydev, MII_CTRL1000,
342 CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
343}
344
345static int rtl8211f_config_init(struct phy_device *phydev)
346{
347 struct rtl821x_priv *priv = phydev->priv;
348 struct device *dev = &phydev->mdio.dev;
349 u16 val_txdly, val_rxdly;
350 int ret;
351
352 ret = phy_modify_paged_changed(phydev, 0xa43, RTL8211F_PHYCR1,
353 RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF,
354 priv->phycr1);
355 if (ret < 0) {
356 dev_err(dev, "aldps mode configuration failed: %pe\n",
357 ERR_PTR(ret));
358 return ret;
359 }
360
361 switch (phydev->interface) {
362 case PHY_INTERFACE_MODE_RGMII:
363 val_txdly = 0;
364 val_rxdly = 0;
365 break;
366
367 case PHY_INTERFACE_MODE_RGMII_RXID:
368 val_txdly = 0;
369 val_rxdly = RTL8211F_RX_DELAY;
370 break;
371
372 case PHY_INTERFACE_MODE_RGMII_TXID:
373 val_txdly = RTL8211F_TX_DELAY;
374 val_rxdly = 0;
375 break;
376
377 case PHY_INTERFACE_MODE_RGMII_ID:
378 val_txdly = RTL8211F_TX_DELAY;
379 val_rxdly = RTL8211F_RX_DELAY;
380 break;
381
382 default: /* the rest of the modes imply leaving delay as is. */
383 return 0;
384 }
385
386 ret = phy_modify_paged_changed(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY,
387 val_txdly);
388 if (ret < 0) {
389 dev_err(dev, "Failed to update the TX delay register\n");
390 return ret;
391 } else if (ret) {
392 dev_dbg(dev,
393 "%s 2ns TX delay (and changing the value from pin-strapping RXD1 or the bootloader)\n",
394 val_txdly ? "Enabling" : "Disabling");
395 } else {
396 dev_dbg(dev,
397 "2ns TX delay was already %s (by pin-strapping RXD1 or bootloader configuration)\n",
398 val_txdly ? "enabled" : "disabled");
399 }
400
401 ret = phy_modify_paged_changed(phydev, 0xd08, 0x15, RTL8211F_RX_DELAY,
402 val_rxdly);
403 if (ret < 0) {
404 dev_err(dev, "Failed to update the RX delay register\n");
405 return ret;
406 } else if (ret) {
407 dev_dbg(dev,
408 "%s 2ns RX delay (and changing the value from pin-strapping RXD0 or the bootloader)\n",
409 val_rxdly ? "Enabling" : "Disabling");
410 } else {
411 dev_dbg(dev,
412 "2ns RX delay was already %s (by pin-strapping RXD0 or bootloader configuration)\n",
413 val_rxdly ? "enabled" : "disabled");
414 }
415
416 if (priv->has_phycr2) {
417 ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
418 RTL8211F_CLKOUT_EN, priv->phycr2);
419 if (ret < 0) {
420 dev_err(dev, "clkout configuration failed: %pe\n",
421 ERR_PTR(ret));
422 return ret;
423 }
424
425 return genphy_soft_reset(phydev);
426 }
427
428 return 0;
429}
430
431static int rtl821x_suspend(struct phy_device *phydev)
432{
433 struct rtl821x_priv *priv = phydev->priv;
434 int ret = 0;
435
436 if (!phydev->wol_enabled) {
437 ret = genphy_suspend(phydev);
438
439 if (ret)
440 return ret;
441
442 clk_disable_unprepare(priv->clk);
443 }
444
445 return ret;
446}
447
448static int rtl821x_resume(struct phy_device *phydev)
449{
450 struct rtl821x_priv *priv = phydev->priv;
451 int ret;
452
453 if (!phydev->wol_enabled)
454 clk_prepare_enable(priv->clk);
455
456 ret = genphy_resume(phydev);
457 if (ret < 0)
458 return ret;
459
460 msleep(20);
461
462 return 0;
463}
464
465static int rtl8211e_config_init(struct phy_device *phydev)
466{
467 int ret = 0, oldpage;
468 u16 val;
469
470 /* enable TX/RX delay for rgmii-* modes, and disable them for rgmii. */
471 switch (phydev->interface) {
472 case PHY_INTERFACE_MODE_RGMII:
473 val = RTL8211E_CTRL_DELAY | 0;
474 break;
475 case PHY_INTERFACE_MODE_RGMII_ID:
476 val = RTL8211E_CTRL_DELAY | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY;
477 break;
478 case PHY_INTERFACE_MODE_RGMII_RXID:
479 val = RTL8211E_CTRL_DELAY | RTL8211E_RX_DELAY;
480 break;
481 case PHY_INTERFACE_MODE_RGMII_TXID:
482 val = RTL8211E_CTRL_DELAY | RTL8211E_TX_DELAY;
483 break;
484 default: /* the rest of the modes imply leaving delays as is. */
485 return 0;
486 }
487
488 /* According to a sample driver there is a 0x1c config register on the
489 * 0xa4 extension page (0x7) layout. It can be used to disable/enable
490 * the RX/TX delays otherwise controlled by RXDLY/TXDLY pins.
491 * The configuration register definition:
492 * 14 = reserved
493 * 13 = Force Tx RX Delay controlled by bit12 bit11,
494 * 12 = RX Delay, 11 = TX Delay
495 * 10:0 = Test && debug settings reserved by realtek
496 */
497 oldpage = phy_select_page(phydev, 0x7);
498 if (oldpage < 0)
499 goto err_restore_page;
500
501 ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0xa4);
502 if (ret)
503 goto err_restore_page;
504
505 ret = __phy_modify(phydev, 0x1c, RTL8211E_CTRL_DELAY
506 | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY,
507 val);
508
509err_restore_page:
510 return phy_restore_page(phydev, oldpage, ret);
511}
512
513static int rtl8211b_suspend(struct phy_device *phydev)
514{
515 phy_write(phydev, MII_MMD_DATA, BIT(9));
516
517 return genphy_suspend(phydev);
518}
519
520static int rtl8211b_resume(struct phy_device *phydev)
521{
522 phy_write(phydev, MII_MMD_DATA, 0);
523
524 return genphy_resume(phydev);
525}
526
527static int rtl8366rb_config_init(struct phy_device *phydev)
528{
529 int ret;
530
531 ret = phy_set_bits(phydev, RTL8366RB_POWER_SAVE,
532 RTL8366RB_POWER_SAVE_ON);
533 if (ret) {
534 dev_err(&phydev->mdio.dev,
535 "error enabling power management\n");
536 }
537
538 return ret;
539}
540
541/* get actual speed to cover the downshift case */
542static int rtlgen_get_speed(struct phy_device *phydev)
543{
544 int val;
545
546 if (!phydev->link)
547 return 0;
548
549 val = phy_read_paged(phydev, 0xa43, 0x12);
550 if (val < 0)
551 return val;
552
553 switch (val & RTLGEN_SPEED_MASK) {
554 case 0x0000:
555 phydev->speed = SPEED_10;
556 break;
557 case 0x0010:
558 phydev->speed = SPEED_100;
559 break;
560 case 0x0020:
561 phydev->speed = SPEED_1000;
562 break;
563 case 0x0200:
564 phydev->speed = SPEED_10000;
565 break;
566 case 0x0210:
567 phydev->speed = SPEED_2500;
568 break;
569 case 0x0220:
570 phydev->speed = SPEED_5000;
571 break;
572 default:
573 break;
574 }
575
576 return 0;
577}
578
579static int rtlgen_read_status(struct phy_device *phydev)
580{
581 int ret;
582
583 ret = genphy_read_status(phydev);
584 if (ret < 0)
585 return ret;
586
587 return rtlgen_get_speed(phydev);
588}
589
590static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
591{
592 int ret;
593
594 if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {
595 rtl821x_write_page(phydev, 0xa5c);
596 ret = __phy_read(phydev, 0x12);
597 rtl821x_write_page(phydev, 0);
598 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
599 rtl821x_write_page(phydev, 0xa5d);
600 ret = __phy_read(phydev, 0x10);
601 rtl821x_write_page(phydev, 0);
602 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE) {
603 rtl821x_write_page(phydev, 0xa5d);
604 ret = __phy_read(phydev, 0x11);
605 rtl821x_write_page(phydev, 0);
606 } else {
607 ret = -EOPNOTSUPP;
608 }
609
610 return ret;
611}
612
613static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
614 u16 val)
615{
616 int ret;
617
618 if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
619 rtl821x_write_page(phydev, 0xa5d);
620 ret = __phy_write(phydev, 0x10, val);
621 rtl821x_write_page(phydev, 0);
622 } else {
623 ret = -EOPNOTSUPP;
624 }
625
626 return ret;
627}
628
629static int rtl822x_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
630{
631 int ret = rtlgen_read_mmd(phydev, devnum, regnum);
632
633 if (ret != -EOPNOTSUPP)
634 return ret;
635
636 if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2) {
637 rtl821x_write_page(phydev, 0xa6e);
638 ret = __phy_read(phydev, 0x16);
639 rtl821x_write_page(phydev, 0);
640 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
641 rtl821x_write_page(phydev, 0xa6d);
642 ret = __phy_read(phydev, 0x12);
643 rtl821x_write_page(phydev, 0);
644 } else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2) {
645 rtl821x_write_page(phydev, 0xa6d);
646 ret = __phy_read(phydev, 0x10);
647 rtl821x_write_page(phydev, 0);
648 }
649
650 return ret;
651}
652
653static int rtl822x_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
654 u16 val)
655{
656 int ret = rtlgen_write_mmd(phydev, devnum, regnum, val);
657
658 if (ret != -EOPNOTSUPP)
659 return ret;
660
661 if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
662 rtl821x_write_page(phydev, 0xa6d);
663 ret = __phy_write(phydev, 0x12, val);
664 rtl821x_write_page(phydev, 0);
665 }
666
667 return ret;
668}
669
670static int rtl822x_get_features(struct phy_device *phydev)
671{
672 int val;
673
674 val = phy_read_paged(phydev, 0xa61, 0x13);
675 if (val < 0)
676 return val;
677
678 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
679 phydev->supported, val & RTL_SUPPORTS_2500FULL);
680 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
681 phydev->supported, val & RTL_SUPPORTS_5000FULL);
682 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
683 phydev->supported, val & RTL_SUPPORTS_10000FULL);
684
685 return genphy_read_abilities(phydev);
686}
687
688static int rtl822x_config_aneg(struct phy_device *phydev)
689{
690 int ret = 0;
691
692 if (phydev->autoneg == AUTONEG_ENABLE) {
693 u16 adv2500 = 0;
694
695 if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
696 phydev->advertising))
697 adv2500 = RTL_ADV_2500FULL;
698
699 ret = phy_modify_paged_changed(phydev, 0xa5d, 0x12,
700 RTL_ADV_2500FULL, adv2500);
701 if (ret < 0)
702 return ret;
703 }
704
705 return __genphy_config_aneg(phydev, ret);
706}
707
708static int rtl822x_read_status(struct phy_device *phydev)
709{
710 int ret;
711
712 if (phydev->autoneg == AUTONEG_ENABLE) {
713 int lpadv = phy_read_paged(phydev, 0xa5d, 0x13);
714
715 if (lpadv < 0)
716 return lpadv;
717
718 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
719 phydev->lp_advertising, lpadv & RTL_LPADV_10000FULL);
720 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
721 phydev->lp_advertising, lpadv & RTL_LPADV_5000FULL);
722 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
723 phydev->lp_advertising, lpadv & RTL_LPADV_2500FULL);
724 }
725
726 ret = genphy_read_status(phydev);
727 if (ret < 0)
728 return ret;
729
730 return rtlgen_get_speed(phydev);
731}
732
733static bool rtlgen_supports_2_5gbps(struct phy_device *phydev)
734{
735 int val;
736
737 phy_write(phydev, RTL821x_PAGE_SELECT, 0xa61);
738 val = phy_read(phydev, 0x13);
739 phy_write(phydev, RTL821x_PAGE_SELECT, 0);
740
741 return val >= 0 && val & RTL_SUPPORTS_2500FULL;
742}
743
744static int rtlgen_match_phy_device(struct phy_device *phydev)
745{
746 return phydev->phy_id == RTL_GENERIC_PHYID &&
747 !rtlgen_supports_2_5gbps(phydev);
748}
749
750static int rtl8226_match_phy_device(struct phy_device *phydev)
751{
752 return phydev->phy_id == RTL_GENERIC_PHYID &&
753 rtlgen_supports_2_5gbps(phydev);
754}
755
756static int rtlgen_resume(struct phy_device *phydev)
757{
758 int ret = genphy_resume(phydev);
759
760 /* Internal PHY's from RTL8168h up may not be instantly ready */
761 msleep(20);
762
763 return ret;
764}
765
766static int rtl9000a_config_init(struct phy_device *phydev)
767{
768 phydev->autoneg = AUTONEG_DISABLE;
769 phydev->speed = SPEED_100;
770 phydev->duplex = DUPLEX_FULL;
771
772 return 0;
773}
774
775static int rtl9000a_config_aneg(struct phy_device *phydev)
776{
777 int ret;
778 u16 ctl = 0;
779
780 switch (phydev->master_slave_set) {
781 case MASTER_SLAVE_CFG_MASTER_FORCE:
782 ctl |= CTL1000_AS_MASTER;
783 break;
784 case MASTER_SLAVE_CFG_SLAVE_FORCE:
785 break;
786 case MASTER_SLAVE_CFG_UNKNOWN:
787 case MASTER_SLAVE_CFG_UNSUPPORTED:
788 return 0;
789 default:
790 phydev_warn(phydev, "Unsupported Master/Slave mode\n");
791 return -EOPNOTSUPP;
792 }
793
794 ret = phy_modify_changed(phydev, MII_CTRL1000, CTL1000_AS_MASTER, ctl);
795 if (ret == 1)
796 ret = genphy_soft_reset(phydev);
797
798 return ret;
799}
800
801static int rtl9000a_read_status(struct phy_device *phydev)
802{
803 int ret;
804
805 phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;
806 phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;
807
808 ret = genphy_update_link(phydev);
809 if (ret)
810 return ret;
811
812 ret = phy_read(phydev, MII_CTRL1000);
813 if (ret < 0)
814 return ret;
815 if (ret & CTL1000_AS_MASTER)
816 phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_FORCE;
817 else
818 phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_FORCE;
819
820 ret = phy_read(phydev, MII_STAT1000);
821 if (ret < 0)
822 return ret;
823 if (ret & LPA_1000MSRES)
824 phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;
825 else
826 phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;
827
828 return 0;
829}
830
831static int rtl9000a_ack_interrupt(struct phy_device *phydev)
832{
833 int err;
834
835 err = phy_read(phydev, RTL8211F_INSR);
836
837 return (err < 0) ? err : 0;
838}
839
840static int rtl9000a_config_intr(struct phy_device *phydev)
841{
842 u16 val;
843 int err;
844
845 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
846 err = rtl9000a_ack_interrupt(phydev);
847 if (err)
848 return err;
849
850 val = (u16)~RTL9000A_GINMR_LINK_STATUS;
851 err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
852 } else {
853 val = ~0;
854 err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
855 if (err)
856 return err;
857
858 err = rtl9000a_ack_interrupt(phydev);
859 }
860
861 return phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
862}
863
864static irqreturn_t rtl9000a_handle_interrupt(struct phy_device *phydev)
865{
866 int irq_status;
867
868 irq_status = phy_read(phydev, RTL8211F_INSR);
869 if (irq_status < 0) {
870 phy_error(phydev);
871 return IRQ_NONE;
872 }
873
874 if (!(irq_status & RTL8211F_INER_LINK_STATUS))
875 return IRQ_NONE;
876
877 phy_trigger_machine(phydev);
878
879 return IRQ_HANDLED;
880}
881
882static struct phy_driver realtek_drvs[] = {
883 {
884 PHY_ID_MATCH_EXACT(0x00008201),
885 .name = "RTL8201CP Ethernet",
886 .read_page = rtl821x_read_page,
887 .write_page = rtl821x_write_page,
888 }, {
889 PHY_ID_MATCH_EXACT(0x001cc816),
890 .name = "RTL8201F Fast Ethernet",
891 .config_intr = &rtl8201_config_intr,
892 .handle_interrupt = rtl8201_handle_interrupt,
893 .suspend = genphy_suspend,
894 .resume = genphy_resume,
895 .read_page = rtl821x_read_page,
896 .write_page = rtl821x_write_page,
897 }, {
898 PHY_ID_MATCH_MODEL(0x001cc880),
899 .name = "RTL8208 Fast Ethernet",
900 .read_mmd = genphy_read_mmd_unsupported,
901 .write_mmd = genphy_write_mmd_unsupported,
902 .suspend = genphy_suspend,
903 .resume = genphy_resume,
904 .read_page = rtl821x_read_page,
905 .write_page = rtl821x_write_page,
906 }, {
907 PHY_ID_MATCH_EXACT(0x001cc910),
908 .name = "RTL8211 Gigabit Ethernet",
909 .config_aneg = rtl8211_config_aneg,
910 .read_mmd = &genphy_read_mmd_unsupported,
911 .write_mmd = &genphy_write_mmd_unsupported,
912 .read_page = rtl821x_read_page,
913 .write_page = rtl821x_write_page,
914 }, {
915 PHY_ID_MATCH_EXACT(0x001cc912),
916 .name = "RTL8211B Gigabit Ethernet",
917 .config_intr = &rtl8211b_config_intr,
918 .handle_interrupt = rtl821x_handle_interrupt,
919 .read_mmd = &genphy_read_mmd_unsupported,
920 .write_mmd = &genphy_write_mmd_unsupported,
921 .suspend = rtl8211b_suspend,
922 .resume = rtl8211b_resume,
923 .read_page = rtl821x_read_page,
924 .write_page = rtl821x_write_page,
925 }, {
926 PHY_ID_MATCH_EXACT(0x001cc913),
927 .name = "RTL8211C Gigabit Ethernet",
928 .config_init = rtl8211c_config_init,
929 .read_mmd = &genphy_read_mmd_unsupported,
930 .write_mmd = &genphy_write_mmd_unsupported,
931 .read_page = rtl821x_read_page,
932 .write_page = rtl821x_write_page,
933 }, {
934 PHY_ID_MATCH_EXACT(0x001cc914),
935 .name = "RTL8211DN Gigabit Ethernet",
936 .config_intr = rtl8211e_config_intr,
937 .handle_interrupt = rtl821x_handle_interrupt,
938 .suspend = genphy_suspend,
939 .resume = genphy_resume,
940 .read_page = rtl821x_read_page,
941 .write_page = rtl821x_write_page,
942 }, {
943 PHY_ID_MATCH_EXACT(0x001cc915),
944 .name = "RTL8211E Gigabit Ethernet",
945 .config_init = &rtl8211e_config_init,
946 .config_intr = &rtl8211e_config_intr,
947 .handle_interrupt = rtl821x_handle_interrupt,
948 .suspend = genphy_suspend,
949 .resume = genphy_resume,
950 .read_page = rtl821x_read_page,
951 .write_page = rtl821x_write_page,
952 }, {
953 PHY_ID_MATCH_EXACT(0x001cc916),
954 .name = "RTL8211F Gigabit Ethernet",
955 .probe = rtl821x_probe,
956 .config_init = &rtl8211f_config_init,
957 .read_status = rtlgen_read_status,
958 .config_intr = &rtl8211f_config_intr,
959 .handle_interrupt = rtl8211f_handle_interrupt,
960 .suspend = rtl821x_suspend,
961 .resume = rtl821x_resume,
962 .read_page = rtl821x_read_page,
963 .write_page = rtl821x_write_page,
964 .flags = PHY_ALWAYS_CALL_SUSPEND,
965 }, {
966 PHY_ID_MATCH_EXACT(RTL_8211FVD_PHYID),
967 .name = "RTL8211F-VD Gigabit Ethernet",
968 .probe = rtl821x_probe,
969 .config_init = &rtl8211f_config_init,
970 .read_status = rtlgen_read_status,
971 .config_intr = &rtl8211f_config_intr,
972 .handle_interrupt = rtl8211f_handle_interrupt,
973 .suspend = rtl821x_suspend,
974 .resume = rtl821x_resume,
975 .read_page = rtl821x_read_page,
976 .write_page = rtl821x_write_page,
977 .flags = PHY_ALWAYS_CALL_SUSPEND,
978 }, {
979 .name = "Generic FE-GE Realtek PHY",
980 .match_phy_device = rtlgen_match_phy_device,
981 .read_status = rtlgen_read_status,
982 .suspend = genphy_suspend,
983 .resume = rtlgen_resume,
984 .read_page = rtl821x_read_page,
985 .write_page = rtl821x_write_page,
986 .read_mmd = rtlgen_read_mmd,
987 .write_mmd = rtlgen_write_mmd,
988 }, {
989 .name = "RTL8226 2.5Gbps PHY",
990 .match_phy_device = rtl8226_match_phy_device,
991 .get_features = rtl822x_get_features,
992 .config_aneg = rtl822x_config_aneg,
993 .read_status = rtl822x_read_status,
994 .suspend = genphy_suspend,
995 .resume = rtlgen_resume,
996 .read_page = rtl821x_read_page,
997 .write_page = rtl821x_write_page,
998 .read_mmd = rtl822x_read_mmd,
999 .write_mmd = rtl822x_write_mmd,
1000 }, {
1001 PHY_ID_MATCH_EXACT(0x001cc840),
1002 .name = "RTL8226B_RTL8221B 2.5Gbps PHY",
1003 .get_features = rtl822x_get_features,
1004 .config_aneg = rtl822x_config_aneg,
1005 .read_status = rtl822x_read_status,
1006 .suspend = genphy_suspend,
1007 .resume = rtlgen_resume,
1008 .read_page = rtl821x_read_page,
1009 .write_page = rtl821x_write_page,
1010 .read_mmd = rtl822x_read_mmd,
1011 .write_mmd = rtl822x_write_mmd,
1012 }, {
1013 PHY_ID_MATCH_EXACT(0x001cc838),
1014 .name = "RTL8226-CG 2.5Gbps PHY",
1015 .get_features = rtl822x_get_features,
1016 .config_aneg = rtl822x_config_aneg,
1017 .read_status = rtl822x_read_status,
1018 .suspend = genphy_suspend,
1019 .resume = rtlgen_resume,
1020 .read_page = rtl821x_read_page,
1021 .write_page = rtl821x_write_page,
1022 }, {
1023 PHY_ID_MATCH_EXACT(0x001cc848),
1024 .name = "RTL8226B-CG_RTL8221B-CG 2.5Gbps PHY",
1025 .get_features = rtl822x_get_features,
1026 .config_aneg = rtl822x_config_aneg,
1027 .read_status = rtl822x_read_status,
1028 .suspend = genphy_suspend,
1029 .resume = rtlgen_resume,
1030 .read_page = rtl821x_read_page,
1031 .write_page = rtl821x_write_page,
1032 }, {
1033 PHY_ID_MATCH_EXACT(0x001cc849),
1034 .name = "RTL8221B-VB-CG 2.5Gbps PHY",
1035 .get_features = rtl822x_get_features,
1036 .config_aneg = rtl822x_config_aneg,
1037 .read_status = rtl822x_read_status,
1038 .suspend = genphy_suspend,
1039 .resume = rtlgen_resume,
1040 .read_page = rtl821x_read_page,
1041 .write_page = rtl821x_write_page,
1042 }, {
1043 PHY_ID_MATCH_EXACT(0x001cc84a),
1044 .name = "RTL8221B-VM-CG 2.5Gbps PHY",
1045 .get_features = rtl822x_get_features,
1046 .config_aneg = rtl822x_config_aneg,
1047 .read_status = rtl822x_read_status,
1048 .suspend = genphy_suspend,
1049 .resume = rtlgen_resume,
1050 .read_page = rtl821x_read_page,
1051 .write_page = rtl821x_write_page,
1052 }, {
1053 PHY_ID_MATCH_EXACT(0x001cc961),
1054 .name = "RTL8366RB Gigabit Ethernet",
1055 .config_init = &rtl8366rb_config_init,
1056 /* These interrupts are handled by the irq controller
1057 * embedded inside the RTL8366RB, they get unmasked when the
1058 * irq is requested and ACKed by reading the status register,
1059 * which is done by the irqchip code.
1060 */
1061 .config_intr = genphy_no_config_intr,
1062 .handle_interrupt = genphy_handle_interrupt_no_ack,
1063 .suspend = genphy_suspend,
1064 .resume = genphy_resume,
1065 }, {
1066 PHY_ID_MATCH_EXACT(0x001ccb00),
1067 .name = "RTL9000AA_RTL9000AN Ethernet",
1068 .features = PHY_BASIC_T1_FEATURES,
1069 .config_init = rtl9000a_config_init,
1070 .config_aneg = rtl9000a_config_aneg,
1071 .read_status = rtl9000a_read_status,
1072 .config_intr = rtl9000a_config_intr,
1073 .handle_interrupt = rtl9000a_handle_interrupt,
1074 .suspend = genphy_suspend,
1075 .resume = genphy_resume,
1076 .read_page = rtl821x_read_page,
1077 .write_page = rtl821x_write_page,
1078 }, {
1079 PHY_ID_MATCH_EXACT(0x001cc942),
1080 .name = "RTL8365MB-VC Gigabit Ethernet",
1081 /* Interrupt handling analogous to RTL8366RB */
1082 .config_intr = genphy_no_config_intr,
1083 .handle_interrupt = genphy_handle_interrupt_no_ack,
1084 .suspend = genphy_suspend,
1085 .resume = genphy_resume,
1086 },
1087};
1088
1089module_phy_driver(realtek_drvs);
1090
1091static const struct mdio_device_id __maybe_unused realtek_tbl[] = {
1092 { PHY_ID_MATCH_VENDOR(0x001cc800) },
1093 { }
1094};
1095
1096MODULE_DEVICE_TABLE(mdio, realtek_tbl);
1/*
2 * drivers/net/phy/realtek.c
3 *
4 * Driver for Realtek PHYs
5 *
6 * Author: Johnson Leung <r58129@freescale.com>
7 *
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16#include <linux/phy.h>
17#include <linux/module.h>
18
19#define RTL821x_PHYSR 0x11
20#define RTL821x_PHYSR_DUPLEX 0x2000
21#define RTL821x_PHYSR_SPEED 0xc000
22#define RTL821x_INER 0x12
23#define RTL821x_INER_INIT 0x6400
24#define RTL821x_INSR 0x13
25#define RTL8211E_INER_LINK_STATUS 0x400
26
27#define RTL8211F_INER_LINK_STATUS 0x0010
28#define RTL8211F_INSR 0x1d
29#define RTL8211F_PAGE_SELECT 0x1f
30#define RTL8211F_TX_DELAY 0x100
31
32MODULE_DESCRIPTION("Realtek PHY driver");
33MODULE_AUTHOR("Johnson Leung");
34MODULE_LICENSE("GPL");
35
36static int rtl821x_ack_interrupt(struct phy_device *phydev)
37{
38 int err;
39
40 err = phy_read(phydev, RTL821x_INSR);
41
42 return (err < 0) ? err : 0;
43}
44
45static int rtl8211f_ack_interrupt(struct phy_device *phydev)
46{
47 int err;
48
49 phy_write(phydev, RTL8211F_PAGE_SELECT, 0xa43);
50 err = phy_read(phydev, RTL8211F_INSR);
51 /* restore to default page 0 */
52 phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
53
54 return (err < 0) ? err : 0;
55}
56
57static int rtl8211b_config_intr(struct phy_device *phydev)
58{
59 int err;
60
61 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
62 err = phy_write(phydev, RTL821x_INER,
63 RTL821x_INER_INIT);
64 else
65 err = phy_write(phydev, RTL821x_INER, 0);
66
67 return err;
68}
69
70static int rtl8211e_config_intr(struct phy_device *phydev)
71{
72 int err;
73
74 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
75 err = phy_write(phydev, RTL821x_INER,
76 RTL8211E_INER_LINK_STATUS);
77 else
78 err = phy_write(phydev, RTL821x_INER, 0);
79
80 return err;
81}
82
83static int rtl8211f_config_intr(struct phy_device *phydev)
84{
85 int err;
86
87 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
88 err = phy_write(phydev, RTL821x_INER,
89 RTL8211F_INER_LINK_STATUS);
90 else
91 err = phy_write(phydev, RTL821x_INER, 0);
92
93 return err;
94}
95
96static int rtl8211f_config_init(struct phy_device *phydev)
97{
98 int ret;
99 u16 reg;
100
101 ret = genphy_config_init(phydev);
102 if (ret < 0)
103 return ret;
104
105 phy_write(phydev, RTL8211F_PAGE_SELECT, 0xd08);
106 reg = phy_read(phydev, 0x11);
107
108 /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */
109 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
110 phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
111 reg |= RTL8211F_TX_DELAY;
112 else
113 reg &= ~RTL8211F_TX_DELAY;
114
115 phy_write(phydev, 0x11, reg);
116 /* restore to default page 0 */
117 phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
118
119 return 0;
120}
121
122static struct phy_driver realtek_drvs[] = {
123 {
124 .phy_id = 0x00008201,
125 .name = "RTL8201CP Ethernet",
126 .phy_id_mask = 0x0000ffff,
127 .features = PHY_BASIC_FEATURES,
128 .flags = PHY_HAS_INTERRUPT,
129 .config_aneg = &genphy_config_aneg,
130 .read_status = &genphy_read_status,
131 }, {
132 .phy_id = 0x001cc912,
133 .name = "RTL8211B Gigabit Ethernet",
134 .phy_id_mask = 0x001fffff,
135 .features = PHY_GBIT_FEATURES,
136 .flags = PHY_HAS_INTERRUPT,
137 .config_aneg = &genphy_config_aneg,
138 .read_status = &genphy_read_status,
139 .ack_interrupt = &rtl821x_ack_interrupt,
140 .config_intr = &rtl8211b_config_intr,
141 }, {
142 .phy_id = 0x001cc914,
143 .name = "RTL8211DN Gigabit Ethernet",
144 .phy_id_mask = 0x001fffff,
145 .features = PHY_GBIT_FEATURES,
146 .flags = PHY_HAS_INTERRUPT,
147 .config_aneg = genphy_config_aneg,
148 .read_status = genphy_read_status,
149 .ack_interrupt = rtl821x_ack_interrupt,
150 .config_intr = rtl8211e_config_intr,
151 .suspend = genphy_suspend,
152 .resume = genphy_resume,
153 }, {
154 .phy_id = 0x001cc915,
155 .name = "RTL8211E Gigabit Ethernet",
156 .phy_id_mask = 0x001fffff,
157 .features = PHY_GBIT_FEATURES,
158 .flags = PHY_HAS_INTERRUPT,
159 .config_aneg = &genphy_config_aneg,
160 .read_status = &genphy_read_status,
161 .ack_interrupt = &rtl821x_ack_interrupt,
162 .config_intr = &rtl8211e_config_intr,
163 .suspend = genphy_suspend,
164 .resume = genphy_resume,
165 }, {
166 .phy_id = 0x001cc916,
167 .name = "RTL8211F Gigabit Ethernet",
168 .phy_id_mask = 0x001fffff,
169 .features = PHY_GBIT_FEATURES,
170 .flags = PHY_HAS_INTERRUPT,
171 .config_aneg = &genphy_config_aneg,
172 .config_init = &rtl8211f_config_init,
173 .read_status = &genphy_read_status,
174 .ack_interrupt = &rtl8211f_ack_interrupt,
175 .config_intr = &rtl8211f_config_intr,
176 .suspend = genphy_suspend,
177 .resume = genphy_resume,
178 },
179};
180
181module_phy_driver(realtek_drvs);
182
183static struct mdio_device_id __maybe_unused realtek_tbl[] = {
184 { 0x001cc912, 0x001fffff },
185 { 0x001cc914, 0x001fffff },
186 { 0x001cc915, 0x001fffff },
187 { 0x001cc916, 0x001fffff },
188 { }
189};
190
191MODULE_DEVICE_TABLE(mdio, realtek_tbl);