1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * drivers/net/phy/broadcom.c
4 *
5 * Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
6 * transceivers.
7 *
8 * Broadcom BCM54810, BCM54811 BroadR-Reach transceivers.
9 *
10 * Copyright (c) 2006 Maciej W. Rozycki
11 *
12 * Inspired by code written by Amy Fong.
13 */
14
15#include "bcm-phy-lib.h"
16#include <linux/delay.h>
17#include <linux/module.h>
18#include <linux/phy.h>
19#include <linux/device.h>
20#include <linux/brcmphy.h>
21#include <linux/of.h>
22#include <linux/interrupt.h>
23#include <linux/irq.h>
24#include <linux/gpio/consumer.h>
25
26#define BRCM_PHY_MODEL(phydev) \
27 ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
28
29#define BRCM_PHY_REV(phydev) \
30 ((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
31
32MODULE_DESCRIPTION("Broadcom PHY driver");
33MODULE_AUTHOR("Maciej W. Rozycki");
34MODULE_LICENSE("GPL");
35
36struct bcm54xx_phy_priv {
37 u64 *stats;
38 struct bcm_ptp_private *ptp;
39 int wake_irq;
40 bool wake_irq_enabled;
41 bool brr_mode;
42};
43
44/* Link modes for BCM58411 PHY */
45static const int bcm54811_linkmodes[] = {
46 ETHTOOL_LINK_MODE_100baseT1_Full_BIT,
47 ETHTOOL_LINK_MODE_10baseT1BRR_Full_BIT,
48 ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
49 ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
50 ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
51 ETHTOOL_LINK_MODE_100baseT_Full_BIT,
52 ETHTOOL_LINK_MODE_100baseT_Half_BIT,
53 ETHTOOL_LINK_MODE_10baseT_Full_BIT,
54 ETHTOOL_LINK_MODE_10baseT_Half_BIT
55};
56
57/* Long-Distance Signaling (BroadR-Reach mode aneg) relevant linkmode bits */
58static const int lds_br_bits[] = {
59 ETHTOOL_LINK_MODE_Autoneg_BIT,
60 ETHTOOL_LINK_MODE_Pause_BIT,
61 ETHTOOL_LINK_MODE_Asym_Pause_BIT,
62 ETHTOOL_LINK_MODE_10baseT1BRR_Full_BIT,
63 ETHTOOL_LINK_MODE_100baseT1_Full_BIT
64};
65
66static bool bcm54xx_phy_can_wakeup(struct phy_device *phydev)
67{
68 struct bcm54xx_phy_priv *priv = phydev->priv;
69
70 return phy_interrupt_is_valid(phydev) || priv->wake_irq >= 0;
71}
72
73static int bcm54xx_config_clock_delay(struct phy_device *phydev)
74{
75 int rc, val;
76
77 /* handling PHY's internal RX clock delay */
78 val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
79 val |= MII_BCM54XX_AUXCTL_MISC_WREN;
80 if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
81 phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
82 /* Disable RGMII RXC-RXD skew */
83 val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
84 }
85 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
86 phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
87 /* Enable RGMII RXC-RXD skew */
88 val |= MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
89 }
90 rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
91 val);
92 if (rc < 0)
93 return rc;
94
95 /* handling PHY's internal TX clock delay */
96 val = bcm_phy_read_shadow(phydev, BCM54810_SHD_CLK_CTL);
97 if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
98 phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
99 /* Disable internal TX clock delay */
100 val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
101 }
102 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
103 phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
104 /* Enable internal TX clock delay */
105 val |= BCM54810_SHD_CLK_CTL_GTXCLK_EN;
106 }
107 rc = bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
108 if (rc < 0)
109 return rc;
110
111 return 0;
112}
113
114static int bcm54210e_config_init(struct phy_device *phydev)
115{
116 int val;
117
118 bcm54xx_config_clock_delay(phydev);
119
120 if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {
121 val = phy_read(phydev, MII_CTRL1000);
122 val |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;
123 phy_write(phydev, MII_CTRL1000, val);
124 }
125
126 return 0;
127}
128
129static int bcm54612e_config_init(struct phy_device *phydev)
130{
131 int reg;
132
133 bcm54xx_config_clock_delay(phydev);
134
135 /* Enable CLK125 MUX on LED4 if ref clock is enabled. */
136 if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
137 int err;
138
139 reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
140 err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
141 BCM54612E_LED4_CLK125OUT_EN | reg);
142
143 if (err < 0)
144 return err;
145 }
146
147 return 0;
148}
149
150static int bcm54616s_config_init(struct phy_device *phydev)
151{
152 int rc, val;
153
154 if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
155 phydev->interface != PHY_INTERFACE_MODE_1000BASEX)
156 return 0;
157
158 /* Ensure proper interface mode is selected. */
159 /* Disable RGMII mode */
160 val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
161 if (val < 0)
162 return val;
163 val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_EN;
164 val |= MII_BCM54XX_AUXCTL_MISC_WREN;
165 rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
166 val);
167 if (rc < 0)
168 return rc;
169
170 /* Select 1000BASE-X register set (primary SerDes) */
171 val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
172 if (val < 0)
173 return val;
174 val |= BCM54XX_SHD_MODE_1000BX;
175 rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
176 if (rc < 0)
177 return rc;
178
179 /* Power down SerDes interface */
180 rc = phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN);
181 if (rc < 0)
182 return rc;
183
184 /* Select proper interface mode */
185 val &= ~BCM54XX_SHD_INTF_SEL_MASK;
186 val |= phydev->interface == PHY_INTERFACE_MODE_SGMII ?
187 BCM54XX_SHD_INTF_SEL_SGMII :
188 BCM54XX_SHD_INTF_SEL_GBIC;
189 rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
190 if (rc < 0)
191 return rc;
192
193 /* Power up SerDes interface */
194 rc = phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN);
195 if (rc < 0)
196 return rc;
197
198 /* Select copper register set */
199 val &= ~BCM54XX_SHD_MODE_1000BX;
200 rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
201 if (rc < 0)
202 return rc;
203
204 /* Power up copper interface */
205 return phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN);
206}
207
208/* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
209static int bcm50610_a0_workaround(struct phy_device *phydev)
210{
211 int err;
212
213 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH0,
214 MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN |
215 MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF);
216 if (err < 0)
217 return err;
218
219 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH3,
220 MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ);
221 if (err < 0)
222 return err;
223
224 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75,
225 MII_BCM54XX_EXP_EXP75_VDACCTRL);
226 if (err < 0)
227 return err;
228
229 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP96,
230 MII_BCM54XX_EXP_EXP96_MYST);
231 if (err < 0)
232 return err;
233
234 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP97,
235 MII_BCM54XX_EXP_EXP97_MYST);
236
237 return err;
238}
239
240static int bcm54xx_phydsp_config(struct phy_device *phydev)
241{
242 int err, err2;
243
244 /* Enable the SMDSP clock */
245 err = bcm54xx_auxctl_write(phydev,
246 MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
247 MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA |
248 MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
249 if (err < 0)
250 return err;
251
252 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
253 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) {
254 /* Clear bit 9 to fix a phy interop issue. */
255 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08,
256 MII_BCM54XX_EXP_EXP08_RJCT_2MHZ);
257 if (err < 0)
258 goto error;
259
260 if (phydev->drv->phy_id == PHY_ID_BCM50610) {
261 err = bcm50610_a0_workaround(phydev);
262 if (err < 0)
263 goto error;
264 }
265 }
266
267 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) {
268 int val;
269
270 val = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP75);
271 if (val < 0)
272 goto error;
273
274 val |= MII_BCM54XX_EXP_EXP75_CM_OSC;
275 err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75, val);
276 }
277
278error:
279 /* Disable the SMDSP clock */
280 err2 = bcm54xx_auxctl_write(phydev,
281 MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
282 MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
283
284 /* Return the first error reported. */
285 return err ? err : err2;
286}
287
288static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
289{
290 u32 orig;
291 int val;
292 bool clk125en = true;
293
294 /* Abort if we are using an untested phy. */
295 if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 &&
296 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 &&
297 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M &&
298 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54210E &&
299 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54810 &&
300 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811)
301 return;
302
303 val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
304 if (val < 0)
305 return;
306
307 orig = val;
308
309 if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
310 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
311 BRCM_PHY_REV(phydev) >= 0x3) {
312 /*
313 * Here, bit 0 _disables_ CLK125 when set.
314 * This bit is set by default.
315 */
316 clk125en = false;
317 } else {
318 if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
319 if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811) {
320 /* Here, bit 0 _enables_ CLK125 when set */
321 val &= ~BCM54XX_SHD_SCR3_DEF_CLK125;
322 }
323 clk125en = false;
324 }
325 }
326
327 if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
328 val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
329 else
330 val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
331
332 if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) {
333 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54210E ||
334 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810 ||
335 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54811)
336 val |= BCM54XX_SHD_SCR3_RXCTXC_DIS;
337 else
338 val |= BCM54XX_SHD_SCR3_TRDDAPD;
339 }
340
341 if (orig != val)
342 bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val);
343
344 val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_APD);
345 if (val < 0)
346 return;
347
348 orig = val;
349
350 if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
351 val |= BCM54XX_SHD_APD_EN;
352 else
353 val &= ~BCM54XX_SHD_APD_EN;
354
355 if (orig != val)
356 bcm_phy_write_shadow(phydev, BCM54XX_SHD_APD, val);
357}
358
359static void bcm54xx_ptp_stop(struct phy_device *phydev)
360{
361 struct bcm54xx_phy_priv *priv = phydev->priv;
362
363 if (priv->ptp)
364 bcm_ptp_stop(priv: priv->ptp);
365}
366
367static void bcm54xx_ptp_config_init(struct phy_device *phydev)
368{
369 struct bcm54xx_phy_priv *priv = phydev->priv;
370
371 if (priv->ptp)
372 bcm_ptp_config_init(phydev);
373}
374
375static int bcm5481x_set_brrmode(struct phy_device *phydev, bool on)
376{
377 int reg;
378 int err;
379 u16 val;
380
381 reg = bcm_phy_read_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
382
383 if (reg < 0)
384 return reg;
385
386 if (on)
387 reg |= BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
388 else
389 reg &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
390
391 err = bcm_phy_write_exp(phydev,
392 BCM54810_EXP_BROADREACH_LRE_MISC_CTL, val: reg);
393 if (err)
394 return err;
395
396 /* Ensure LRE or IEEE register set is accessed according to the brr
397 * on/off, thus set the override
398 */
399 val = BCM54811_EXP_BROADREACH_LRE_OVERLAY_CTL_EN;
400 if (!on)
401 val |= BCM54811_EXP_BROADREACH_LRE_OVERLAY_CTL_OVERRIDE_VAL;
402
403 return bcm_phy_write_exp(phydev,
404 BCM54811_EXP_BROADREACH_LRE_OVERLAY_CTL, val);
405}
406
407static int bcm54811_config_init(struct phy_device *phydev)
408{
409 struct bcm54xx_phy_priv *priv = phydev->priv;
410 int err, reg;
411
412 /* Enable CLK125 MUX on LED4 if ref clock is enabled. */
413 if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
414 reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
415 if (reg < 0)
416 return reg;
417 err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
418 BCM54612E_LED4_CLK125OUT_EN | reg);
419 if (err < 0)
420 return err;
421 }
422
423 /* With BCM54811, BroadR-Reach implies no autoneg */
424 if (priv->brr_mode)
425 phydev->autoneg = 0;
426
427 return bcm5481x_set_brrmode(phydev, on: priv->brr_mode);
428}
429
430static int bcm54xx_config_init(struct phy_device *phydev)
431{
432 int reg, err, val;
433
434 reg = phy_read(phydev, MII_BCM54XX_ECR);
435 if (reg < 0)
436 return reg;
437
438 /* Mask interrupts globally. */
439 reg |= MII_BCM54XX_ECR_IM;
440 err = phy_write(phydev, MII_BCM54XX_ECR, val: reg);
441 if (err < 0)
442 return err;
443
444 /* Unmask events we are interested in. */
445 reg = ~(MII_BCM54XX_INT_DUPLEX |
446 MII_BCM54XX_INT_SPEED |
447 MII_BCM54XX_INT_LINK);
448 err = phy_write(phydev, MII_BCM54XX_IMR, val: reg);
449 if (err < 0)
450 return err;
451
452 if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
453 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
454 (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
455 bcm_phy_write_shadow(phydev, BCM54XX_SHD_RGMII_MODE, val: 0);
456
457 bcm54xx_adjust_rxrefclk(phydev);
458
459 switch (BRCM_PHY_MODEL(phydev)) {
460 case PHY_ID_BCM50610:
461 case PHY_ID_BCM50610M:
462 err = bcm54xx_config_clock_delay(phydev);
463 break;
464 case PHY_ID_BCM54210E:
465 err = bcm54210e_config_init(phydev);
466 break;
467 case PHY_ID_BCM54612E:
468 err = bcm54612e_config_init(phydev);
469 break;
470 case PHY_ID_BCM54616S:
471 err = bcm54616s_config_init(phydev);
472 break;
473 case PHY_ID_BCM54810:
474 /* For BCM54810, we need to disable BroadR-Reach function */
475 val = bcm_phy_read_exp(phydev,
476 BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
477 val &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
478 err = bcm_phy_write_exp(phydev,
479 BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
480 val);
481 break;
482 case PHY_ID_BCM54811:
483 err = bcm54811_config_init(phydev);
484 break;
485 }
486 if (err)
487 return err;
488
489 bcm54xx_phydsp_config(phydev);
490
491 /* For non-SFP setups, encode link speed into LED1 and LED3 pair
492 * (green/amber).
493 * Also flash these two LEDs on activity. This means configuring
494 * them for MULTICOLOR and encoding link/activity into them.
495 * Don't do this for devices on an SFP module, since some of these
496 * use the LED outputs to control the SFP LOS signal, and changing
497 * these settings will cause LOS to malfunction.
498 */
499 if (!phy_on_sfp(phydev)) {
500 val = BCM54XX_SHD_LEDS1_LED1(BCM_LED_SRC_MULTICOLOR1) |
501 BCM54XX_SHD_LEDS1_LED3(BCM_LED_SRC_MULTICOLOR1);
502 bcm_phy_write_shadow(phydev, BCM54XX_SHD_LEDS1, val);
503
504 val = BCM_LED_MULTICOLOR_IN_PHASE |
505 BCM54XX_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
506 BCM54XX_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
507 bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
508 }
509
510 bcm54xx_ptp_config_init(phydev);
511
512 /* Acknowledge any left over interrupt and charge the device for
513 * wake-up.
514 */
515 err = bcm_phy_read_exp(phydev, BCM54XX_WOL_INT_STATUS);
516 if (err < 0)
517 return err;
518
519 if (err)
520 pm_wakeup_event(dev: &phydev->mdio.dev, msec: 0);
521
522 return 0;
523}
524
525static int bcm54xx_iddq_set(struct phy_device *phydev, bool enable)
526{
527 int ret = 0;
528
529 if (!(phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND))
530 return ret;
531
532 ret = bcm_phy_read_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL);
533 if (ret < 0)
534 goto out;
535
536 if (enable)
537 ret |= BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP;
538 else
539 ret &= ~(BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP);
540
541 ret = bcm_phy_write_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL, val: ret);
542out:
543 return ret;
544}
545
546static int bcm54xx_set_wakeup_irq(struct phy_device *phydev, bool state)
547{
548 struct bcm54xx_phy_priv *priv = phydev->priv;
549 int ret = 0;
550
551 if (!bcm54xx_phy_can_wakeup(phydev))
552 return ret;
553
554 if (priv->wake_irq_enabled != state) {
555 if (state)
556 ret = enable_irq_wake(irq: priv->wake_irq);
557 else
558 ret = disable_irq_wake(irq: priv->wake_irq);
559 priv->wake_irq_enabled = state;
560 }
561
562 return ret;
563}
564
565static int bcm54xx_suspend(struct phy_device *phydev)
566{
567 int ret = 0;
568
569 bcm54xx_ptp_stop(phydev);
570
571 /* Acknowledge any Wake-on-LAN interrupt prior to suspend */
572 ret = bcm_phy_read_exp(phydev, BCM54XX_WOL_INT_STATUS);
573 if (ret < 0)
574 return ret;
575
576 if (phydev->wol_enabled)
577 return bcm54xx_set_wakeup_irq(phydev, state: true);
578
579 /* We cannot use a read/modify/write here otherwise the PHY gets into
580 * a bad state where its LEDs keep flashing, thus defeating the purpose
581 * of low power mode.
582 */
583 ret = phy_write(phydev, MII_BMCR, BMCR_PDOWN);
584 if (ret < 0)
585 return ret;
586
587 return bcm54xx_iddq_set(phydev, enable: true);
588}
589
590static int bcm54xx_resume(struct phy_device *phydev)
591{
592 int ret = 0;
593
594 if (phydev->wol_enabled) {
595 ret = bcm54xx_set_wakeup_irq(phydev, state: false);
596 if (ret)
597 return ret;
598 }
599
600 ret = bcm54xx_iddq_set(phydev, enable: false);
601 if (ret < 0)
602 return ret;
603
604 /* Writes to register other than BMCR would be ignored
605 * unless we clear the PDOWN bit first
606 */
607 ret = genphy_resume(phydev);
608 if (ret < 0)
609 return ret;
610
611 /* Upon exiting power down, the PHY remains in an internal reset state
612 * for 40us
613 */
614 fsleep(usecs: 40);
615
616 /* Issue a soft reset after clearing the power down bit
617 * and before doing any other configuration.
618 */
619 if (phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND) {
620 ret = genphy_soft_reset(phydev);
621 if (ret < 0)
622 return ret;
623 }
624
625 return bcm54xx_config_init(phydev);
626}
627
628static int bcm54810_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
629{
630 return -EOPNOTSUPP;
631}
632
633static int bcm54810_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
634 u16 val)
635{
636 return -EOPNOTSUPP;
637}
638
639
640/**
641 * bcm5481x_read_abilities - read PHY abilities from LRESR or Clause 22
642 * (BMSR) registers, based on whether the PHY is in BroadR-Reach or IEEE mode
643 * @phydev: target phy_device struct
644 *
645 * Description: Reads the PHY's abilities and populates phydev->supported
646 * accordingly. The register to read the abilities from is determined by
647 * the brr mode setting of the PHY as read from the device tree.
648 * Note that the LRE and IEEE sets of abilities are disjunct, in other words,
649 * not only the link modes differ, but also the auto-negotiation and
650 * master-slave setup is controlled differently.
651 *
652 * Returns: 0 on success, < 0 on failure
653 */
654static int bcm5481x_read_abilities(struct phy_device *phydev)
655{
656 struct device_node *np = phydev->mdio.dev.of_node;
657 struct bcm54xx_phy_priv *priv = phydev->priv;
658 int i, val, err;
659
660 for (i = 0; i < ARRAY_SIZE(bcm54811_linkmodes); i++)
661 linkmode_clear_bit(bcm54811_linkmodes[i], phydev->supported);
662
663 priv->brr_mode = of_property_read_bool(np, propname: "brr-mode");
664
665 /* Set BroadR-Reach mode as configured in the DT. */
666 err = bcm5481x_set_brrmode(phydev, on: priv->brr_mode);
667 if (err)
668 return err;
669
670 if (priv->brr_mode) {
671 linkmode_set_bit_array(array: phy_basic_ports_array,
672 ARRAY_SIZE(phy_basic_ports_array),
673 addr: phydev->supported);
674
675 val = phy_read(phydev, MII_BCM54XX_LRESR);
676 if (val < 0)
677 return val;
678
679 linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
680 phydev->supported,
681 val & LRESR_LDSABILITY);
682 linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT1_Full_BIT,
683 phydev->supported,
684 val & LRESR_100_1PAIR);
685 linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1BRR_Full_BIT,
686 phydev->supported,
687 val & LRESR_10_1PAIR);
688 return 0;
689 }
690
691 return genphy_read_abilities(phydev);
692}
693
694static int bcm5481x_config_delay_swap(struct phy_device *phydev)
695{
696 struct device_node *np = phydev->mdio.dev.of_node;
697
698 /* Set up the delay. */
699 bcm54xx_config_clock_delay(phydev);
700
701 if (of_property_read_bool(np, propname: "enet-phy-lane-swap")) {
702 /* Lane Swap - Undocumented register...magic! */
703 int ret = bcm_phy_write_exp(phydev,
704 MII_BCM54XX_EXP_SEL_ER + 0x9,
705 val: 0x11B);
706 if (ret < 0)
707 return ret;
708 }
709
710 return 0;
711}
712
713static int bcm5481_config_aneg(struct phy_device *phydev)
714{
715 struct bcm54xx_phy_priv *priv = phydev->priv;
716 int ret;
717
718 /* Aneg firstly. */
719 if (priv->brr_mode)
720 ret = bcm_config_lre_aneg(phydev, changed: false);
721 else
722 ret = genphy_config_aneg(phydev);
723
724 if (ret)
725 return ret;
726
727 /* Then we can set up the delay and swap. */
728 return bcm5481x_config_delay_swap(phydev);
729}
730
731static int bcm54811_config_aneg(struct phy_device *phydev)
732{
733 struct bcm54xx_phy_priv *priv = phydev->priv;
734 int ret;
735
736 /* Aneg firstly. */
737 if (priv->brr_mode) {
738 /* BCM54811 is only capable of autonegotiation in IEEE mode */
739 phydev->autoneg = 0;
740 ret = bcm_config_lre_aneg(phydev, changed: false);
741 } else {
742 ret = genphy_config_aneg(phydev);
743 }
744
745 if (ret)
746 return ret;
747
748 /* Then we can set up the delay and swap. */
749 return bcm5481x_config_delay_swap(phydev);
750}
751
752struct bcm54616s_phy_priv {
753 bool mode_1000bx_en;
754};
755
756static int bcm54616s_probe(struct phy_device *phydev)
757{
758 struct bcm54616s_phy_priv *priv;
759 int val;
760
761 priv = devm_kzalloc(dev: &phydev->mdio.dev, size: sizeof(*priv), GFP_KERNEL);
762 if (!priv)
763 return -ENOMEM;
764
765 phydev->priv = priv;
766
767 val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
768 if (val < 0)
769 return val;
770
771 /* The PHY is strapped in RGMII-fiber mode when INTERF_SEL[1:0]
772 * is 01b, and the link between PHY and its link partner can be
773 * either 1000Base-X or 100Base-FX.
774 * RGMII-1000Base-X is properly supported, but RGMII-100Base-FX
775 * support is still missing as of now.
776 */
777 if ((val & BCM54XX_SHD_INTF_SEL_MASK) == BCM54XX_SHD_INTF_SEL_RGMII) {
778 val = bcm_phy_read_shadow(phydev, BCM54616S_SHD_100FX_CTRL);
779 if (val < 0)
780 return val;
781
782 /* Bit 0 of the SerDes 100-FX Control register, when set
783 * to 1, sets the MII/RGMII -> 100BASE-FX configuration.
784 * When this bit is set to 0, it sets the GMII/RGMII ->
785 * 1000BASE-X configuration.
786 */
787 if (!(val & BCM54616S_100FX_MODE))
788 priv->mode_1000bx_en = true;
789
790 phydev->port = PORT_FIBRE;
791 }
792
793 return 0;
794}
795
796static int bcm54616s_config_aneg(struct phy_device *phydev)
797{
798 struct bcm54616s_phy_priv *priv = phydev->priv;
799 int ret;
800
801 /* Aneg firstly. */
802 if (priv->mode_1000bx_en)
803 ret = genphy_c37_config_aneg(phydev);
804 else
805 ret = genphy_config_aneg(phydev);
806
807 /* Then we can set up the delay. */
808 bcm54xx_config_clock_delay(phydev);
809
810 return ret;
811}
812
813static int bcm54616s_read_status(struct phy_device *phydev)
814{
815 struct bcm54616s_phy_priv *priv = phydev->priv;
816 bool changed;
817 int err;
818
819 if (priv->mode_1000bx_en)
820 err = genphy_c37_read_status(phydev, changed: &changed);
821 else
822 err = genphy_read_status(phydev);
823
824 return err;
825}
826
827static int brcm_fet_config_init(struct phy_device *phydev)
828{
829 int reg, err, err2, brcmtest;
830
831 /* Reset the PHY to bring it to a known state. */
832 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
833 if (err < 0)
834 return err;
835
836 /* The datasheet indicates the PHY needs up to 1us to complete a reset,
837 * build some slack here.
838 */
839 usleep_range(min: 1000, max: 2000);
840
841 /* The PHY requires 65 MDC clock cycles to complete a write operation
842 * and turnaround the line properly.
843 *
844 * We ignore -EIO here as the MDIO controller (e.g.: mdio-bcm-unimac)
845 * may flag the lack of turn-around as a read failure. This is
846 * particularly true with this combination since the MDIO controller
847 * only used 64 MDC cycles. This is not a critical failure in this
848 * specific case and it has no functional impact otherwise, so we let
849 * that one go through. If there is a genuine bus error, the next read
850 * of MII_BRCM_FET_INTREG will error out.
851 */
852 err = phy_read(phydev, MII_BMCR);
853 if (err < 0 && err != -EIO)
854 return err;
855
856 /* Read to clear status bits */
857 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
858 if (reg < 0)
859 return reg;
860
861 /* Unmask events we are interested in and mask interrupts globally. */
862 if (phydev->drv->phy_id == PHY_ID_BCM5221)
863 reg = MII_BRCM_FET_IR_ENABLE |
864 MII_BRCM_FET_IR_MASK;
865 else
866 reg = MII_BRCM_FET_IR_DUPLEX_EN |
867 MII_BRCM_FET_IR_SPEED_EN |
868 MII_BRCM_FET_IR_LINK_EN |
869 MII_BRCM_FET_IR_ENABLE |
870 MII_BRCM_FET_IR_MASK;
871
872 err = phy_write(phydev, MII_BRCM_FET_INTREG, val: reg);
873 if (err < 0)
874 return err;
875
876 /* Enable shadow register access */
877 brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
878 if (brcmtest < 0)
879 return brcmtest;
880
881 reg = brcmtest | MII_BRCM_FET_BT_SRE;
882
883 phy_lock_mdio_bus(phydev);
884
885 err = __phy_write(phydev, MII_BRCM_FET_BRCMTEST, val: reg);
886 if (err < 0) {
887 phy_unlock_mdio_bus(phydev);
888 return err;
889 }
890
891 if (phydev->drv->phy_id != PHY_ID_BCM5221) {
892 /* Set the LED mode */
893 reg = __phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4);
894 if (reg < 0) {
895 err = reg;
896 goto done;
897 }
898
899 err = __phy_modify(phydev, MII_BRCM_FET_SHDW_AUXMODE4,
900 MII_BRCM_FET_SHDW_AM4_LED_MASK,
901 MII_BRCM_FET_SHDW_AM4_LED_MODE1);
902 if (err < 0)
903 goto done;
904
905 /* Enable auto MDIX */
906 err = __phy_set_bits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
907 MII_BRCM_FET_SHDW_MC_FAME);
908 if (err < 0)
909 goto done;
910 }
911
912 if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {
913 /* Enable auto power down */
914 err = __phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
915 MII_BRCM_FET_SHDW_AS2_APDE);
916 }
917
918done:
919 /* Disable shadow register access */
920 err2 = __phy_write(phydev, MII_BRCM_FET_BRCMTEST, val: brcmtest);
921 if (!err)
922 err = err2;
923
924 phy_unlock_mdio_bus(phydev);
925
926 return err;
927}
928
929static int brcm_fet_ack_interrupt(struct phy_device *phydev)
930{
931 int reg;
932
933 /* Clear pending interrupts. */
934 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
935 if (reg < 0)
936 return reg;
937
938 return 0;
939}
940
941static int brcm_fet_config_intr(struct phy_device *phydev)
942{
943 int reg, err;
944
945 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
946 if (reg < 0)
947 return reg;
948
949 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
950 err = brcm_fet_ack_interrupt(phydev);
951 if (err)
952 return err;
953
954 reg &= ~MII_BRCM_FET_IR_MASK;
955 err = phy_write(phydev, MII_BRCM_FET_INTREG, val: reg);
956 } else {
957 reg |= MII_BRCM_FET_IR_MASK;
958 err = phy_write(phydev, MII_BRCM_FET_INTREG, val: reg);
959 if (err)
960 return err;
961
962 err = brcm_fet_ack_interrupt(phydev);
963 }
964
965 return err;
966}
967
968static irqreturn_t brcm_fet_handle_interrupt(struct phy_device *phydev)
969{
970 int irq_status;
971
972 irq_status = phy_read(phydev, MII_BRCM_FET_INTREG);
973 if (irq_status < 0) {
974 phy_error(phydev);
975 return IRQ_NONE;
976 }
977
978 if (irq_status == 0)
979 return IRQ_NONE;
980
981 phy_trigger_machine(phydev);
982
983 return IRQ_HANDLED;
984}
985
986static int brcm_fet_suspend(struct phy_device *phydev)
987{
988 int reg, err, err2, brcmtest;
989
990 /* We cannot use a read/modify/write here otherwise the PHY continues
991 * to drive LEDs which defeats the purpose of low power mode.
992 */
993 err = phy_write(phydev, MII_BMCR, BMCR_PDOWN);
994 if (err < 0)
995 return err;
996
997 /* Enable shadow register access */
998 brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
999 if (brcmtest < 0)
1000 return brcmtest;
1001
1002 reg = brcmtest | MII_BRCM_FET_BT_SRE;
1003
1004 phy_lock_mdio_bus(phydev);
1005
1006 err = __phy_write(phydev, MII_BRCM_FET_BRCMTEST, val: reg);
1007 if (err < 0) {
1008 phy_unlock_mdio_bus(phydev);
1009 return err;
1010 }
1011
1012 if (phydev->drv->phy_id == PHY_ID_BCM5221)
1013 /* Force Low Power Mode with clock enabled */
1014 reg = BCM5221_SHDW_AM4_EN_CLK_LPM | BCM5221_SHDW_AM4_FORCE_LPM;
1015 else
1016 /* Set standby mode */
1017 reg = MII_BRCM_FET_SHDW_AM4_STANDBY;
1018
1019 err = __phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXMODE4, val: reg);
1020
1021 /* Disable shadow register access */
1022 err2 = __phy_write(phydev, MII_BRCM_FET_BRCMTEST, val: brcmtest);
1023 if (!err)
1024 err = err2;
1025
1026 phy_unlock_mdio_bus(phydev);
1027
1028 return err;
1029}
1030
1031static int bcm5221_config_aneg(struct phy_device *phydev)
1032{
1033 int ret, val;
1034
1035 ret = genphy_config_aneg(phydev);
1036 if (ret)
1037 return ret;
1038
1039 switch (phydev->mdix_ctrl) {
1040 case ETH_TP_MDI:
1041 val = BCM5221_AEGSR_MDIX_DIS;
1042 break;
1043 case ETH_TP_MDI_X:
1044 val = BCM5221_AEGSR_MDIX_DIS | BCM5221_AEGSR_MDIX_MAN_SWAP;
1045 break;
1046 case ETH_TP_MDI_AUTO:
1047 val = 0;
1048 break;
1049 default:
1050 return 0;
1051 }
1052
1053 return phy_modify(phydev, BCM5221_AEGSR, BCM5221_AEGSR_MDIX_MAN_SWAP |
1054 BCM5221_AEGSR_MDIX_DIS,
1055 set: val);
1056}
1057
1058static int bcm5221_read_status(struct phy_device *phydev)
1059{
1060 int ret;
1061
1062 /* Read MDIX status */
1063 ret = phy_read(phydev, BCM5221_AEGSR);
1064 if (ret < 0)
1065 return ret;
1066
1067 if (ret & BCM5221_AEGSR_MDIX_DIS) {
1068 if (ret & BCM5221_AEGSR_MDIX_MAN_SWAP)
1069 phydev->mdix_ctrl = ETH_TP_MDI_X;
1070 else
1071 phydev->mdix_ctrl = ETH_TP_MDI;
1072 } else {
1073 phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
1074 }
1075
1076 if (ret & BCM5221_AEGSR_MDIX_STATUS)
1077 phydev->mdix = ETH_TP_MDI_X;
1078 else
1079 phydev->mdix = ETH_TP_MDI;
1080
1081 return genphy_read_status(phydev);
1082}
1083
1084static void bcm54xx_phy_get_wol(struct phy_device *phydev,
1085 struct ethtool_wolinfo *wol)
1086{
1087 /* We cannot wake-up if we do not have a dedicated PHY interrupt line
1088 * or an out of band GPIO descriptor for wake-up. Zeroing
1089 * wol->supported allows the caller (MAC driver) to play through and
1090 * offer its own Wake-on-LAN scheme if available.
1091 */
1092 if (!bcm54xx_phy_can_wakeup(phydev)) {
1093 wol->supported = 0;
1094 return;
1095 }
1096
1097 bcm_phy_get_wol(phydev, wol);
1098}
1099
1100static int bcm54xx_phy_set_wol(struct phy_device *phydev,
1101 struct ethtool_wolinfo *wol)
1102{
1103 int ret;
1104
1105 /* We cannot wake-up if we do not have a dedicated PHY interrupt line
1106 * or an out of band GPIO descriptor for wake-up. Returning -EOPNOTSUPP
1107 * allows the caller (MAC driver) to play through and offer its own
1108 * Wake-on-LAN scheme if available.
1109 */
1110 if (!bcm54xx_phy_can_wakeup(phydev))
1111 return -EOPNOTSUPP;
1112
1113 ret = bcm_phy_set_wol(phydev, wol);
1114 if (ret < 0)
1115 return ret;
1116
1117 return 0;
1118}
1119
1120static int bcm54xx_phy_probe(struct phy_device *phydev)
1121{
1122 struct bcm54xx_phy_priv *priv;
1123 struct gpio_desc *wakeup_gpio;
1124 int ret = 0;
1125
1126 priv = devm_kzalloc(dev: &phydev->mdio.dev, size: sizeof(*priv), GFP_KERNEL);
1127 if (!priv)
1128 return -ENOMEM;
1129
1130 priv->wake_irq = -ENXIO;
1131
1132 phydev->priv = priv;
1133
1134 priv->stats = devm_kcalloc(dev: &phydev->mdio.dev,
1135 n: bcm_phy_get_sset_count(phydev), size: sizeof(u64),
1136 GFP_KERNEL);
1137 if (!priv->stats)
1138 return -ENOMEM;
1139
1140 priv->ptp = bcm_ptp_probe(phydev);
1141 if (IS_ERR(ptr: priv->ptp))
1142 return PTR_ERR(ptr: priv->ptp);
1143
1144 /* We cannot utilize the _optional variant here since we want to know
1145 * whether the GPIO descriptor exists or not to advertise Wake-on-LAN
1146 * support or not.
1147 */
1148 wakeup_gpio = devm_gpiod_get(dev: &phydev->mdio.dev, con_id: "wakeup", flags: GPIOD_IN);
1149 if (PTR_ERR(ptr: wakeup_gpio) == -EPROBE_DEFER)
1150 return PTR_ERR(ptr: wakeup_gpio);
1151
1152 if (!IS_ERR(ptr: wakeup_gpio)) {
1153 priv->wake_irq = gpiod_to_irq(desc: wakeup_gpio);
1154
1155 /* Dummy interrupt handler which is not enabled but is provided
1156 * in order for the interrupt descriptor to be fully set-up.
1157 */
1158 ret = devm_request_irq(dev: &phydev->mdio.dev, irq: priv->wake_irq,
1159 handler: bcm_phy_wol_isr,
1160 IRQF_TRIGGER_LOW | IRQF_NO_AUTOEN,
1161 devname: dev_name(dev: &phydev->mdio.dev), dev_id: phydev);
1162 if (ret)
1163 return ret;
1164 }
1165
1166 /* If we do not have a main interrupt or a side-band wake-up interrupt,
1167 * then the device cannot be marked as wake-up capable.
1168 */
1169 if (!bcm54xx_phy_can_wakeup(phydev))
1170 return 0;
1171
1172 return device_init_wakeup(dev: &phydev->mdio.dev, enable: true);
1173}
1174
1175static void bcm54xx_get_stats(struct phy_device *phydev,
1176 struct ethtool_stats *stats, u64 *data)
1177{
1178 struct bcm54xx_phy_priv *priv = phydev->priv;
1179
1180 bcm_phy_get_stats(phydev, shadow: priv->stats, stats, data);
1181}
1182
1183static void bcm54xx_link_change_notify(struct phy_device *phydev)
1184{
1185 u16 mask = MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE |
1186 MII_BCM54XX_EXP_EXP08_FORCE_DAC_WAKE;
1187 int ret;
1188
1189 if (phydev->state != PHY_RUNNING)
1190 return;
1191
1192 /* Don't change the DAC wake settings if auto power down
1193 * is not requested.
1194 */
1195 if (!(phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
1196 return;
1197
1198 ret = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP08);
1199 if (ret < 0)
1200 return;
1201
1202 /* Enable/disable 10BaseT auto and forced early DAC wake depending
1203 * on the negotiated speed, those settings should only be done
1204 * for 10Mbits/sec.
1205 */
1206 if (phydev->speed == SPEED_10)
1207 ret |= mask;
1208 else
1209 ret &= ~mask;
1210 bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08, val: ret);
1211}
1212
1213static int lre_read_master_slave(struct phy_device *phydev)
1214{
1215 int cfg = MASTER_SLAVE_CFG_UNKNOWN, state;
1216 int val;
1217
1218 /* In BroadR-Reach mode we are always capable of master-slave
1219 * and there is no preferred master or slave configuration
1220 */
1221 phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;
1222 phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;
1223
1224 val = phy_read(phydev, MII_BCM54XX_LRECR);
1225 if (val < 0)
1226 return val;
1227
1228 if ((val & LRECR_LDSEN) == 0) {
1229 if (val & LRECR_MASTER)
1230 cfg = MASTER_SLAVE_CFG_MASTER_FORCE;
1231 else
1232 cfg = MASTER_SLAVE_CFG_SLAVE_FORCE;
1233 }
1234
1235 val = phy_read(phydev, MII_BCM54XX_LRELDSE);
1236 if (val < 0)
1237 return val;
1238
1239 if (val & LDSE_MASTER)
1240 state = MASTER_SLAVE_STATE_MASTER;
1241 else
1242 state = MASTER_SLAVE_STATE_SLAVE;
1243
1244 phydev->master_slave_get = cfg;
1245 phydev->master_slave_state = state;
1246
1247 return 0;
1248}
1249
1250/* Read LDS Link Partner Ability in BroadR-Reach mode */
1251static int lre_read_lpa(struct phy_device *phydev)
1252{
1253 int i, lrelpa;
1254
1255 if (phydev->autoneg != AUTONEG_ENABLE) {
1256 if (!phydev->autoneg_complete) {
1257 /* aneg not yet done, reset all relevant bits */
1258 for (i = 0; i < ARRAY_SIZE(lds_br_bits); i++)
1259 linkmode_clear_bit(lds_br_bits[i],
1260 phydev->lp_advertising);
1261
1262 return 0;
1263 }
1264
1265 /* Long-Distance Signaling Link Partner Ability */
1266 lrelpa = phy_read(phydev, MII_BCM54XX_LRELPA);
1267 if (lrelpa < 0)
1268 return lrelpa;
1269
1270 linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
1271 phydev->lp_advertising,
1272 lrelpa & LRELPA_PAUSE_ASYM);
1273 linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT,
1274 phydev->lp_advertising,
1275 lrelpa & LRELPA_PAUSE);
1276 linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT1_Full_BIT,
1277 phydev->lp_advertising,
1278 lrelpa & LRELPA_100_1PAIR);
1279 linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1BRR_Full_BIT,
1280 phydev->lp_advertising,
1281 lrelpa & LRELPA_10_1PAIR);
1282 } else {
1283 linkmode_zero(dst: phydev->lp_advertising);
1284 }
1285
1286 return 0;
1287}
1288
1289static int lre_read_status_fixed(struct phy_device *phydev)
1290{
1291 int lrecr = phy_read(phydev, MII_BCM54XX_LRECR);
1292
1293 if (lrecr < 0)
1294 return lrecr;
1295
1296 phydev->duplex = DUPLEX_FULL;
1297
1298 if (lrecr & LRECR_SPEED100)
1299 phydev->speed = SPEED_100;
1300 else
1301 phydev->speed = SPEED_10;
1302
1303 return 0;
1304}
1305
1306/**
1307 * lre_update_link - update link status in @phydev
1308 * @phydev: target phy_device struct
1309 * Return: 0 on success, < 0 on error
1310 *
1311 * Description: Update the value in phydev->link to reflect the
1312 * current link value. In order to do this, we need to read
1313 * the status register twice, keeping the second value.
1314 * This is a genphy_update_link modified to work on LRE registers
1315 * of BroadR-Reach PHY
1316 */
1317static int lre_update_link(struct phy_device *phydev)
1318{
1319 int status = 0, lrecr;
1320
1321 lrecr = phy_read(phydev, MII_BCM54XX_LRECR);
1322 if (lrecr < 0)
1323 return lrecr;
1324
1325 /* Autoneg is being started, therefore disregard BMSR value and
1326 * report link as down.
1327 */
1328 if (lrecr & BMCR_ANRESTART)
1329 goto done;
1330
1331 /* The link state is latched low so that momentary link
1332 * drops can be detected. Do not double-read the status
1333 * in polling mode to detect such short link drops except
1334 * the link was already down.
1335 */
1336 if (!phy_polling_mode(phydev) || !phydev->link) {
1337 status = phy_read(phydev, MII_BCM54XX_LRESR);
1338 if (status < 0)
1339 return status;
1340 else if (status & LRESR_LSTATUS)
1341 goto done;
1342 }
1343
1344 /* Read link and autonegotiation status */
1345 status = phy_read(phydev, MII_BCM54XX_LRESR);
1346 if (status < 0)
1347 return status;
1348done:
1349 phydev->link = status & LRESR_LSTATUS ? 1 : 0;
1350 phydev->autoneg_complete = status & LRESR_LDSCOMPLETE ? 1 : 0;
1351
1352 /* Consider the case that autoneg was started and "aneg complete"
1353 * bit has been reset, but "link up" bit not yet.
1354 */
1355 if (phydev->autoneg == AUTONEG_ENABLE && !phydev->autoneg_complete)
1356 phydev->link = 0;
1357
1358 return 0;
1359}
1360
1361/* Get the status in BroadRReach mode just like genphy_read_status does
1362* in normal mode
1363*/
1364static int bcm54811_lre_read_status(struct phy_device *phydev)
1365{
1366 int err, old_link = phydev->link;
1367
1368 /* Update the link, but return if there was an error */
1369 err = lre_update_link(phydev);
1370 if (err)
1371 return err;
1372
1373 /* why bother the PHY if nothing can have changed */
1374 if (phydev->autoneg ==
1375 AUTONEG_ENABLE && old_link && phydev->link)
1376 return 0;
1377
1378 phydev->speed = SPEED_UNKNOWN;
1379 phydev->duplex = DUPLEX_UNKNOWN;
1380 phydev->pause = 0;
1381 phydev->asym_pause = 0;
1382
1383 err = lre_read_master_slave(phydev);
1384 if (err < 0)
1385 return err;
1386
1387 /* Read LDS Link Partner Ability */
1388 err = lre_read_lpa(phydev);
1389 if (err < 0)
1390 return err;
1391
1392 if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete)
1393 phy_resolve_aneg_linkmode(phydev);
1394 else if (phydev->autoneg == AUTONEG_DISABLE)
1395 err = lre_read_status_fixed(phydev);
1396
1397 return err;
1398}
1399
1400static int bcm54811_read_status(struct phy_device *phydev)
1401{
1402 struct bcm54xx_phy_priv *priv = phydev->priv;
1403
1404 if (priv->brr_mode)
1405 return bcm54811_lre_read_status(phydev);
1406
1407 return genphy_read_status(phydev);
1408}
1409
1410static struct phy_driver broadcom_drivers[] = {
1411{
1412 .phy_id = PHY_ID_BCM5411,
1413 .phy_id_mask = 0xfffffff0,
1414 .name = "Broadcom BCM5411",
1415 /* PHY_GBIT_FEATURES */
1416 .get_sset_count = bcm_phy_get_sset_count,
1417 .get_strings = bcm_phy_get_strings,
1418 .get_stats = bcm54xx_get_stats,
1419 .probe = bcm54xx_phy_probe,
1420 .config_init = bcm54xx_config_init,
1421 .config_intr = bcm_phy_config_intr,
1422 .handle_interrupt = bcm_phy_handle_interrupt,
1423 .link_change_notify = bcm54xx_link_change_notify,
1424}, {
1425 .phy_id = PHY_ID_BCM5421,
1426 .phy_id_mask = 0xfffffff0,
1427 .name = "Broadcom BCM5421",
1428 /* PHY_GBIT_FEATURES */
1429 .get_sset_count = bcm_phy_get_sset_count,
1430 .get_strings = bcm_phy_get_strings,
1431 .get_stats = bcm54xx_get_stats,
1432 .probe = bcm54xx_phy_probe,
1433 .config_init = bcm54xx_config_init,
1434 .config_intr = bcm_phy_config_intr,
1435 .handle_interrupt = bcm_phy_handle_interrupt,
1436 .link_change_notify = bcm54xx_link_change_notify,
1437}, {
1438 .phy_id = PHY_ID_BCM54210E,
1439 .phy_id_mask = 0xfffffff0,
1440 .name = "Broadcom BCM54210E",
1441 /* PHY_GBIT_FEATURES */
1442 .flags = PHY_ALWAYS_CALL_SUSPEND,
1443 .get_sset_count = bcm_phy_get_sset_count,
1444 .get_strings = bcm_phy_get_strings,
1445 .get_stats = bcm54xx_get_stats,
1446 .probe = bcm54xx_phy_probe,
1447 .config_init = bcm54xx_config_init,
1448 .config_intr = bcm_phy_config_intr,
1449 .handle_interrupt = bcm_phy_handle_interrupt,
1450 .link_change_notify = bcm54xx_link_change_notify,
1451 .suspend = bcm54xx_suspend,
1452 .resume = bcm54xx_resume,
1453 .get_wol = bcm54xx_phy_get_wol,
1454 .set_wol = bcm54xx_phy_set_wol,
1455 .led_brightness_set = bcm_phy_led_brightness_set,
1456}, {
1457 .phy_id = PHY_ID_BCM5461,
1458 .phy_id_mask = 0xfffffff0,
1459 .name = "Broadcom BCM5461",
1460 /* PHY_GBIT_FEATURES */
1461 .get_sset_count = bcm_phy_get_sset_count,
1462 .get_strings = bcm_phy_get_strings,
1463 .get_stats = bcm54xx_get_stats,
1464 .probe = bcm54xx_phy_probe,
1465 .config_init = bcm54xx_config_init,
1466 .config_intr = bcm_phy_config_intr,
1467 .handle_interrupt = bcm_phy_handle_interrupt,
1468 .link_change_notify = bcm54xx_link_change_notify,
1469 .led_brightness_set = bcm_phy_led_brightness_set,
1470}, {
1471 .phy_id = PHY_ID_BCM54612E,
1472 .phy_id_mask = 0xfffffff0,
1473 .name = "Broadcom BCM54612E",
1474 /* PHY_GBIT_FEATURES */
1475 .get_sset_count = bcm_phy_get_sset_count,
1476 .get_strings = bcm_phy_get_strings,
1477 .get_stats = bcm54xx_get_stats,
1478 .probe = bcm54xx_phy_probe,
1479 .config_init = bcm54xx_config_init,
1480 .config_intr = bcm_phy_config_intr,
1481 .handle_interrupt = bcm_phy_handle_interrupt,
1482 .link_change_notify = bcm54xx_link_change_notify,
1483 .led_brightness_set = bcm_phy_led_brightness_set,
1484 .suspend = bcm54xx_suspend,
1485 .resume = bcm54xx_resume,
1486}, {
1487 .phy_id = PHY_ID_BCM54616S,
1488 .phy_id_mask = 0xfffffff0,
1489 .name = "Broadcom BCM54616S",
1490 /* PHY_GBIT_FEATURES */
1491 .soft_reset = genphy_soft_reset,
1492 .config_init = bcm54xx_config_init,
1493 .config_aneg = bcm54616s_config_aneg,
1494 .config_intr = bcm_phy_config_intr,
1495 .handle_interrupt = bcm_phy_handle_interrupt,
1496 .read_status = bcm54616s_read_status,
1497 .probe = bcm54616s_probe,
1498 .link_change_notify = bcm54xx_link_change_notify,
1499 .led_brightness_set = bcm_phy_led_brightness_set,
1500}, {
1501 .phy_id = PHY_ID_BCM5464,
1502 .phy_id_mask = 0xfffffff0,
1503 .name = "Broadcom BCM5464",
1504 /* PHY_GBIT_FEATURES */
1505 .get_sset_count = bcm_phy_get_sset_count,
1506 .get_strings = bcm_phy_get_strings,
1507 .get_stats = bcm54xx_get_stats,
1508 .probe = bcm54xx_phy_probe,
1509 .config_init = bcm54xx_config_init,
1510 .config_intr = bcm_phy_config_intr,
1511 .handle_interrupt = bcm_phy_handle_interrupt,
1512 .suspend = genphy_suspend,
1513 .resume = genphy_resume,
1514 .link_change_notify = bcm54xx_link_change_notify,
1515 .led_brightness_set = bcm_phy_led_brightness_set,
1516}, {
1517 .phy_id = PHY_ID_BCM5481,
1518 .phy_id_mask = 0xfffffff0,
1519 .name = "Broadcom BCM5481",
1520 /* PHY_GBIT_FEATURES */
1521 .get_sset_count = bcm_phy_get_sset_count,
1522 .get_strings = bcm_phy_get_strings,
1523 .get_stats = bcm54xx_get_stats,
1524 .probe = bcm54xx_phy_probe,
1525 .config_init = bcm54xx_config_init,
1526 .config_aneg = bcm5481_config_aneg,
1527 .config_intr = bcm_phy_config_intr,
1528 .handle_interrupt = bcm_phy_handle_interrupt,
1529 .link_change_notify = bcm54xx_link_change_notify,
1530 .led_brightness_set = bcm_phy_led_brightness_set,
1531}, {
1532 .phy_id = PHY_ID_BCM54810,
1533 .phy_id_mask = 0xfffffff0,
1534 .name = "Broadcom BCM54810",
1535 /* PHY_GBIT_FEATURES */
1536 .get_sset_count = bcm_phy_get_sset_count,
1537 .get_strings = bcm_phy_get_strings,
1538 .get_stats = bcm54xx_get_stats,
1539 .probe = bcm54xx_phy_probe,
1540 .read_mmd = bcm54810_read_mmd,
1541 .write_mmd = bcm54810_write_mmd,
1542 .config_init = bcm54xx_config_init,
1543 .config_aneg = bcm5481_config_aneg,
1544 .config_intr = bcm_phy_config_intr,
1545 .handle_interrupt = bcm_phy_handle_interrupt,
1546 .suspend = bcm54xx_suspend,
1547 .resume = bcm54xx_resume,
1548 .link_change_notify = bcm54xx_link_change_notify,
1549 .led_brightness_set = bcm_phy_led_brightness_set,
1550}, {
1551 .phy_id = PHY_ID_BCM54811,
1552 .phy_id_mask = 0xfffffff0,
1553 .name = "Broadcom BCM54811",
1554 /* PHY_GBIT_FEATURES */
1555 .get_sset_count = bcm_phy_get_sset_count,
1556 .get_strings = bcm_phy_get_strings,
1557 .get_stats = bcm54xx_get_stats,
1558 .probe = bcm54xx_phy_probe,
1559 .config_init = bcm54xx_config_init,
1560 .config_aneg = bcm54811_config_aneg,
1561 .config_intr = bcm_phy_config_intr,
1562 .handle_interrupt = bcm_phy_handle_interrupt,
1563 .read_status = bcm54811_read_status,
1564 .get_features = bcm5481x_read_abilities,
1565 .suspend = bcm54xx_suspend,
1566 .resume = bcm54xx_resume,
1567 .link_change_notify = bcm54xx_link_change_notify,
1568 .led_brightness_set = bcm_phy_led_brightness_set,
1569}, {
1570 .phy_id = PHY_ID_BCM5482,
1571 .phy_id_mask = 0xfffffff0,
1572 .name = "Broadcom BCM5482",
1573 /* PHY_GBIT_FEATURES */
1574 .get_sset_count = bcm_phy_get_sset_count,
1575 .get_strings = bcm_phy_get_strings,
1576 .get_stats = bcm54xx_get_stats,
1577 .probe = bcm54xx_phy_probe,
1578 .config_init = bcm54xx_config_init,
1579 .config_intr = bcm_phy_config_intr,
1580 .handle_interrupt = bcm_phy_handle_interrupt,
1581 .link_change_notify = bcm54xx_link_change_notify,
1582 .led_brightness_set = bcm_phy_led_brightness_set,
1583}, {
1584 .phy_id = PHY_ID_BCM50610,
1585 .phy_id_mask = 0xfffffff0,
1586 .name = "Broadcom BCM50610",
1587 /* PHY_GBIT_FEATURES */
1588 .get_sset_count = bcm_phy_get_sset_count,
1589 .get_strings = bcm_phy_get_strings,
1590 .get_stats = bcm54xx_get_stats,
1591 .probe = bcm54xx_phy_probe,
1592 .config_init = bcm54xx_config_init,
1593 .config_intr = bcm_phy_config_intr,
1594 .handle_interrupt = bcm_phy_handle_interrupt,
1595 .link_change_notify = bcm54xx_link_change_notify,
1596 .suspend = bcm54xx_suspend,
1597 .resume = bcm54xx_resume,
1598 .led_brightness_set = bcm_phy_led_brightness_set,
1599}, {
1600 .phy_id = PHY_ID_BCM50610M,
1601 .phy_id_mask = 0xfffffff0,
1602 .name = "Broadcom BCM50610M",
1603 /* PHY_GBIT_FEATURES */
1604 .get_sset_count = bcm_phy_get_sset_count,
1605 .get_strings = bcm_phy_get_strings,
1606 .get_stats = bcm54xx_get_stats,
1607 .probe = bcm54xx_phy_probe,
1608 .config_init = bcm54xx_config_init,
1609 .config_intr = bcm_phy_config_intr,
1610 .handle_interrupt = bcm_phy_handle_interrupt,
1611 .link_change_notify = bcm54xx_link_change_notify,
1612 .suspend = bcm54xx_suspend,
1613 .resume = bcm54xx_resume,
1614 .led_brightness_set = bcm_phy_led_brightness_set,
1615}, {
1616 .phy_id = PHY_ID_BCM57780,
1617 .phy_id_mask = 0xfffffff0,
1618 .name = "Broadcom BCM57780",
1619 /* PHY_GBIT_FEATURES */
1620 .get_sset_count = bcm_phy_get_sset_count,
1621 .get_strings = bcm_phy_get_strings,
1622 .get_stats = bcm54xx_get_stats,
1623 .probe = bcm54xx_phy_probe,
1624 .config_init = bcm54xx_config_init,
1625 .config_intr = bcm_phy_config_intr,
1626 .handle_interrupt = bcm_phy_handle_interrupt,
1627 .link_change_notify = bcm54xx_link_change_notify,
1628 .led_brightness_set = bcm_phy_led_brightness_set,
1629}, {
1630 .phy_id = PHY_ID_BCMAC131,
1631 .phy_id_mask = 0xfffffff0,
1632 .name = "Broadcom BCMAC131",
1633 /* PHY_BASIC_FEATURES */
1634 .config_init = brcm_fet_config_init,
1635 .config_intr = brcm_fet_config_intr,
1636 .handle_interrupt = brcm_fet_handle_interrupt,
1637 .suspend = brcm_fet_suspend,
1638 .resume = brcm_fet_config_init,
1639}, {
1640 .phy_id = PHY_ID_BCM5241,
1641 .phy_id_mask = 0xfffffff0,
1642 .name = "Broadcom BCM5241",
1643 /* PHY_BASIC_FEATURES */
1644 .config_init = brcm_fet_config_init,
1645 .config_intr = brcm_fet_config_intr,
1646 .handle_interrupt = brcm_fet_handle_interrupt,
1647 .suspend = brcm_fet_suspend,
1648 .resume = brcm_fet_config_init,
1649}, {
1650 .phy_id = PHY_ID_BCM5221,
1651 .phy_id_mask = 0xfffffff0,
1652 .name = "Broadcom BCM5221",
1653 /* PHY_BASIC_FEATURES */
1654 .config_init = brcm_fet_config_init,
1655 .config_intr = brcm_fet_config_intr,
1656 .handle_interrupt = brcm_fet_handle_interrupt,
1657 .suspend = brcm_fet_suspend,
1658 .resume = brcm_fet_config_init,
1659 .config_aneg = bcm5221_config_aneg,
1660 .read_status = bcm5221_read_status,
1661}, {
1662 .phy_id = PHY_ID_BCM5395,
1663 .phy_id_mask = 0xfffffff0,
1664 .name = "Broadcom BCM5395",
1665 .flags = PHY_IS_INTERNAL,
1666 /* PHY_GBIT_FEATURES */
1667 .get_sset_count = bcm_phy_get_sset_count,
1668 .get_strings = bcm_phy_get_strings,
1669 .get_stats = bcm54xx_get_stats,
1670 .probe = bcm54xx_phy_probe,
1671 .link_change_notify = bcm54xx_link_change_notify,
1672 .led_brightness_set = bcm_phy_led_brightness_set,
1673}, {
1674 .phy_id = PHY_ID_BCM53125,
1675 .phy_id_mask = 0xfffffff0,
1676 .name = "Broadcom BCM53125",
1677 .flags = PHY_IS_INTERNAL,
1678 /* PHY_GBIT_FEATURES */
1679 .get_sset_count = bcm_phy_get_sset_count,
1680 .get_strings = bcm_phy_get_strings,
1681 .get_stats = bcm54xx_get_stats,
1682 .probe = bcm54xx_phy_probe,
1683 .config_init = bcm54xx_config_init,
1684 .config_intr = bcm_phy_config_intr,
1685 .handle_interrupt = bcm_phy_handle_interrupt,
1686 .link_change_notify = bcm54xx_link_change_notify,
1687 .led_brightness_set = bcm_phy_led_brightness_set,
1688}, {
1689 .phy_id = PHY_ID_BCM53128,
1690 .phy_id_mask = 0xfffffff0,
1691 .name = "Broadcom BCM53128",
1692 .flags = PHY_IS_INTERNAL,
1693 /* PHY_GBIT_FEATURES */
1694 .get_sset_count = bcm_phy_get_sset_count,
1695 .get_strings = bcm_phy_get_strings,
1696 .get_stats = bcm54xx_get_stats,
1697 .probe = bcm54xx_phy_probe,
1698 .config_init = bcm54xx_config_init,
1699 .config_intr = bcm_phy_config_intr,
1700 .handle_interrupt = bcm_phy_handle_interrupt,
1701 .link_change_notify = bcm54xx_link_change_notify,
1702 .led_brightness_set = bcm_phy_led_brightness_set,
1703}, {
1704 .phy_id = PHY_ID_BCM89610,
1705 .phy_id_mask = 0xfffffff0,
1706 .name = "Broadcom BCM89610",
1707 /* PHY_GBIT_FEATURES */
1708 .get_sset_count = bcm_phy_get_sset_count,
1709 .get_strings = bcm_phy_get_strings,
1710 .get_stats = bcm54xx_get_stats,
1711 .probe = bcm54xx_phy_probe,
1712 .config_init = bcm54xx_config_init,
1713 .config_intr = bcm_phy_config_intr,
1714 .handle_interrupt = bcm_phy_handle_interrupt,
1715 .link_change_notify = bcm54xx_link_change_notify,
1716} };
1717
1718module_phy_driver(broadcom_drivers);
1719
1720static const struct mdio_device_id __maybe_unused broadcom_tbl[] = {
1721 { PHY_ID_BCM5411, 0xfffffff0 },
1722 { PHY_ID_BCM5421, 0xfffffff0 },
1723 { PHY_ID_BCM54210E, 0xfffffff0 },
1724 { PHY_ID_BCM5461, 0xfffffff0 },
1725 { PHY_ID_BCM54612E, 0xfffffff0 },
1726 { PHY_ID_BCM54616S, 0xfffffff0 },
1727 { PHY_ID_BCM5464, 0xfffffff0 },
1728 { PHY_ID_BCM5481, 0xfffffff0 },
1729 { PHY_ID_BCM54810, 0xfffffff0 },
1730 { PHY_ID_BCM54811, 0xfffffff0 },
1731 { PHY_ID_BCM5482, 0xfffffff0 },
1732 { PHY_ID_BCM50610, 0xfffffff0 },
1733 { PHY_ID_BCM50610M, 0xfffffff0 },
1734 { PHY_ID_BCM57780, 0xfffffff0 },
1735 { PHY_ID_BCMAC131, 0xfffffff0 },
1736 { PHY_ID_BCM5221, 0xfffffff0 },
1737 { PHY_ID_BCM5241, 0xfffffff0 },
1738 { PHY_ID_BCM5395, 0xfffffff0 },
1739 { PHY_ID_BCM53125, 0xfffffff0 },
1740 { PHY_ID_BCM53128, 0xfffffff0 },
1741 { PHY_ID_BCM89610, 0xfffffff0 },
1742 { }
1743};
1744
1745MODULE_DEVICE_TABLE(mdio, broadcom_tbl);
1746

source code of linux/drivers/net/phy/broadcom.c