blob: 692048d86ab12e80585f45d358be7b3550bba371 [file] [log] [blame]
Andrew Lunna2443fd2019-01-21 19:05:50 +01001// SPDX-License-Identifier: GPL-2.0+
Florian Fainellib560a582014-02-13 16:08:45 -08002/*
3 * Broadcom BCM7xxx internal transceivers support.
4 *
Doug Berger83ee1022017-03-13 17:41:32 -07005 * Copyright (C) 2014-2017 Broadcom
Florian Fainellib560a582014-02-13 16:08:45 -08006 */
7
8#include <linux/module.h>
9#include <linux/phy.h>
10#include <linux/delay.h>
Arun Parameswarana1cba562015-10-06 12:25:48 -070011#include "bcm-phy-lib.h"
Florian Fainellib560a582014-02-13 16:08:45 -080012#include <linux/bitops.h>
13#include <linux/brcmphy.h>
Florian Fainellib8f9a022014-08-22 18:55:45 -070014#include <linux/mdio.h>
Florian Fainellib560a582014-02-13 16:08:45 -080015
16/* Broadcom BCM7xxx internal PHY registers */
Florian Fainellib560a582014-02-13 16:08:45 -080017
Doug Berger83ee1022017-03-13 17:41:32 -070018/* EPHY only register definitions */
Florian Fainellib560a582014-02-13 16:08:45 -080019#define MII_BCM7XXX_100TX_AUX_CTL 0x10
20#define MII_BCM7XXX_100TX_FALSE_CAR 0x13
21#define MII_BCM7XXX_100TX_DISC 0x14
22#define MII_BCM7XXX_AUX_MODE 0x1d
Florian Fainelli3ccc3052016-02-06 13:09:36 -080023#define MII_BCM7XXX_64CLK_MDIO BIT(12)
Florian Fainellib560a582014-02-13 16:08:45 -080024#define MII_BCM7XXX_TEST 0x1f
25#define MII_BCM7XXX_SHD_MODE_2 BIT(2)
Doug Berger83ee1022017-03-13 17:41:32 -070026#define MII_BCM7XXX_SHD_2_ADDR_CTRL 0xe
27#define MII_BCM7XXX_SHD_2_CTRL_STAT 0xf
28#define MII_BCM7XXX_SHD_2_BIAS_TRIM 0x1a
29#define MII_BCM7XXX_SHD_3_AN_EEE_ADV 0x3
30#define MII_BCM7XXX_SHD_3_PCS_CTRL_2 0x6
31#define MII_BCM7XXX_PCS_CTRL_2_DEF 0x4400
32#define MII_BCM7XXX_SHD_3_AN_STAT 0xb
33#define MII_BCM7XXX_AN_NULL_MSG_EN BIT(0)
34#define MII_BCM7XXX_AN_EEE_EN BIT(1)
35#define MII_BCM7XXX_SHD_3_EEE_THRESH 0xe
36#define MII_BCM7XXX_EEE_THRESH_DEF 0x50
37#define MII_BCM7XXX_SHD_3_TL4 0x23
38#define MII_BCM7XXX_TL4_RST_MSK (BIT(2) | BIT(1))
Florian Fainellib560a582014-02-13 16:08:45 -080039
Florian Fainellib23ce9e2016-11-29 09:57:18 -080040struct bcm7xxx_phy_priv {
41 u64 *stats;
42};
43
Florian Fainellia4906312014-11-11 14:55:13 -080044static int bcm7xxx_28nm_d0_afe_config_init(struct phy_device *phydev)
45{
46 /* AFE_RXCONFIG_0 */
Arun Parameswarana1cba562015-10-06 12:25:48 -070047 bcm_phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb15);
Florian Fainellia4906312014-11-11 14:55:13 -080048
49 /* AFE_RXCONFIG_1 */
Arun Parameswarana1cba562015-10-06 12:25:48 -070050 bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f);
Florian Fainellia4906312014-11-11 14:55:13 -080051
52 /* AFE_RXCONFIG_2, set rCal offset for HT=0 code and LT=-2 code */
Arun Parameswarana1cba562015-10-06 12:25:48 -070053 bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0x2003);
Florian Fainellia4906312014-11-11 14:55:13 -080054
55 /* AFE_RX_LP_COUNTER, set RX bandwidth to maximum */
Arun Parameswarana1cba562015-10-06 12:25:48 -070056 bcm_phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc0);
Florian Fainellia4906312014-11-11 14:55:13 -080057
Florian Fainelli6da82532015-06-08 11:05:20 -070058 /* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */
Arun Parameswarana1cba562015-10-06 12:25:48 -070059 bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431);
Florian Fainellia4906312014-11-11 14:55:13 -080060
61 /* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */
Arun Parameswarana1cba562015-10-06 12:25:48 -070062 bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da);
Florian Fainellia4906312014-11-11 14:55:13 -080063
64 /* AFE_VDAC_OTHERS_0, set 1000BT Cidac=010 for all ports */
Arun Parameswarana1cba562015-10-06 12:25:48 -070065 bcm_phy_write_misc(phydev, AFE_VDAC_OTHERS_0, 0xa020);
Florian Fainellia4906312014-11-11 14:55:13 -080066
67 /* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal
68 * offset for HT=0 code
69 */
Arun Parameswarana1cba562015-10-06 12:25:48 -070070 bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3);
Florian Fainellia4906312014-11-11 14:55:13 -080071
72 /* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */
Arun Parameswaran9200c272015-10-06 12:25:50 -070073 phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010);
Florian Fainellia4906312014-11-11 14:55:13 -080074
75 /* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */
Arun Parameswarana1cba562015-10-06 12:25:48 -070076 bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b);
Florian Fainellia4906312014-11-11 14:55:13 -080077
78 /* Reset R_CAL/RC_CAL engine */
Florian Fainellif878fe52019-03-20 12:53:12 -070079 bcm_phy_r_rc_cal_reset(phydev);
Florian Fainellia4906312014-11-11 14:55:13 -080080
81 return 0;
82}
83
Florian Fainelli0c2fdc22014-11-11 14:55:14 -080084static int bcm7xxx_28nm_e0_plus_afe_config_init(struct phy_device *phydev)
85{
86 /* AFE_RXCONFIG_1, provide more margin for INL/DNL measurement */
Arun Parameswarana1cba562015-10-06 12:25:48 -070087 bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -080088
Florian Fainelli6da82532015-06-08 11:05:20 -070089 /* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */
Arun Parameswarana1cba562015-10-06 12:25:48 -070090 bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431);
Florian Fainelli6da82532015-06-08 11:05:20 -070091
Florian Fainelli0c2fdc22014-11-11 14:55:14 -080092 /* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */
Arun Parameswarana1cba562015-10-06 12:25:48 -070093 bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -080094
95 /* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal
96 * offset for HT=0 code
97 */
Arun Parameswarana1cba562015-10-06 12:25:48 -070098 bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -080099
100 /* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */
Arun Parameswaran9200c272015-10-06 12:25:50 -0700101 phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -0800102
103 /* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */
Arun Parameswarana1cba562015-10-06 12:25:48 -0700104 bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -0800105
106 /* Reset R_CAL/RC_CAL engine */
Florian Fainellif878fe52019-03-20 12:53:12 -0700107 bcm_phy_r_rc_cal_reset(phydev);
Florian Fainelli0c2fdc22014-11-11 14:55:14 -0800108
109 return 0;
110}
111
Florian Fainelli039a7b82017-01-20 12:36:34 -0800112static int bcm7xxx_28nm_a0_patch_afe_config_init(struct phy_device *phydev)
113{
114 /* +1 RC_CAL codes for RL centering for both LT and HT conditions */
115 bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0xd003);
116
117 /* Cut master bias current by 2% to compensate for RC_CAL offset */
118 bcm_phy_write_misc(phydev, DSP_TAP10, 0x791b);
119
120 /* Improve hybrid leakage */
121 bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x10e3);
122
123 /* Change rx_on_tune 8 to 0xf */
124 bcm_phy_write_misc(phydev, 0x21, 0x2, 0x87f6);
125
126 /* Change 100Tx EEE bandwidth */
127 bcm_phy_write_misc(phydev, 0x22, 0x2, 0x017d);
128
129 /* Enable ffe zero detection for Vitesse interoperability */
130 bcm_phy_write_misc(phydev, 0x26, 0x2, 0x0015);
131
Florian Fainellif878fe52019-03-20 12:53:12 -0700132 bcm_phy_r_rc_cal_reset(phydev);
Florian Fainelli039a7b82017-01-20 12:36:34 -0800133
134 return 0;
135}
136
Florian Fainellib560a582014-02-13 16:08:45 -0800137static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
138{
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700139 u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags);
140 u8 patch = PHY_BRCM_7XXX_PATCH(phydev->dev_flags);
Florian Fainellidb888162016-11-22 11:40:57 -0800141 u8 count;
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700142 int ret = 0;
Florian Fainellib560a582014-02-13 16:08:45 -0800143
Florian Fainelli039a7b82017-01-20 12:36:34 -0800144 /* Newer devices have moved the revision information back into a
145 * standard location in MII_PHYS_ID[23]
146 */
147 if (rev == 0)
148 rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
149
Florian Fainelli6ec259c2014-11-11 14:55:10 -0800150 pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n",
Andrew Lunn84eff6d2016-01-06 20:11:10 +0100151 phydev_name(phydev), phydev->drv->name, rev, patch);
Florian Fainellib560a582014-02-13 16:08:45 -0800152
Florian Fainelli8e346e12015-06-26 10:39:04 -0700153 /* Dummy read to a register to workaround an issue upon reset where the
154 * internal inverter may not allow the first MDIO transaction to pass
155 * the MDIO management controller and make us return 0xffff for such
156 * reads.
157 */
158 phy_read(phydev, MII_BMSR);
159
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700160 switch (rev) {
Arun Parameswaran6fdecfe2018-08-07 10:02:44 -0700161 case 0xa0:
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700162 case 0xb0:
Florian Fainellif878fe52019-03-20 12:53:12 -0700163 ret = bcm_phy_28nm_a0b0_afe_config_init(phydev);
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700164 break;
Florian Fainellia4906312014-11-11 14:55:13 -0800165 case 0xd0:
166 ret = bcm7xxx_28nm_d0_afe_config_init(phydev);
167 break;
Florian Fainelli0c2fdc22014-11-11 14:55:14 -0800168 case 0xe0:
169 case 0xf0:
Florian Fainelli60efff02014-12-03 09:57:00 -0800170 /* Rev G0 introduces a roll over */
171 case 0x10:
Florian Fainelli0c2fdc22014-11-11 14:55:14 -0800172 ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev);
173 break;
Florian Fainelli039a7b82017-01-20 12:36:34 -0800174 case 0x01:
175 ret = bcm7xxx_28nm_a0_patch_afe_config_init(phydev);
176 break;
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700177 default:
Florian Fainellid8ebfed2014-09-19 13:07:56 -0700178 break;
179 }
180
Florian Fainelli9df54dd2014-08-22 18:55:41 -0700181 if (ret)
182 return ret;
183
Murali Krishna Policharlaab41ca32020-03-27 21:55:40 +0200184 ret = bcm_phy_enable_jumbo(phydev);
185 if (ret)
186 return ret;
187
Florian Fainellidb888162016-11-22 11:40:57 -0800188 ret = bcm_phy_downshift_get(phydev, &count);
189 if (ret)
190 return ret;
191
192 /* Only enable EEE if Wirespeed/downshift is disabled */
193 ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
Florian Fainellib8f9a022014-08-22 18:55:45 -0700194 if (ret)
195 return ret;
196
Arun Parameswarana1cba562015-10-06 12:25:48 -0700197 return bcm_phy_enable_apd(phydev, true);
Florian Fainellib560a582014-02-13 16:08:45 -0800198}
199
Florian Fainelli4fd14e02014-08-14 16:52:52 -0700200static int bcm7xxx_28nm_resume(struct phy_device *phydev)
201{
202 int ret;
203
204 /* Re-apply workarounds coming out suspend/resume */
205 ret = bcm7xxx_28nm_config_init(phydev);
206 if (ret)
207 return ret;
208
209 /* 28nm Gigabit PHYs come out of reset without any half-duplex
210 * or "hub" compliant advertised mode, fix that. This does not
211 * cause any problems with the PHY library since genphy_config_aneg()
212 * gracefully handles auto-negotiated and forced modes.
213 */
214 return genphy_config_aneg(phydev);
215}
216
Florian Fainellib560a582014-02-13 16:08:45 -0800217static int phy_set_clr_bits(struct phy_device *dev, int location,
218 int set_mask, int clr_mask)
219{
220 int v, ret;
221
222 v = phy_read(dev, location);
223 if (v < 0)
224 return v;
225
226 v &= ~clr_mask;
227 v |= set_mask;
228
229 ret = phy_write(dev, location, v);
230 if (ret < 0)
231 return ret;
232
233 return v;
234}
235
Doug Berger83ee1022017-03-13 17:41:32 -0700236static int bcm7xxx_28nm_ephy_01_afe_config_init(struct phy_device *phydev)
237{
238 int ret;
239
240 /* set shadow mode 2 */
241 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
242 MII_BCM7XXX_SHD_MODE_2, 0);
243 if (ret < 0)
244 return ret;
245
246 /* Set current trim values INT_trim = -1, Ext_trim =0 */
247 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_BIAS_TRIM, 0x3BE0);
248 if (ret < 0)
249 goto reset_shadow_mode;
250
251 /* Cal reset */
252 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
253 MII_BCM7XXX_SHD_3_TL4);
254 if (ret < 0)
255 goto reset_shadow_mode;
256 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
257 MII_BCM7XXX_TL4_RST_MSK, 0);
258 if (ret < 0)
259 goto reset_shadow_mode;
260
261 /* Cal reset disable */
262 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
263 MII_BCM7XXX_SHD_3_TL4);
264 if (ret < 0)
265 goto reset_shadow_mode;
266 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
267 0, MII_BCM7XXX_TL4_RST_MSK);
268 if (ret < 0)
269 goto reset_shadow_mode;
270
271reset_shadow_mode:
272 /* reset shadow mode 2 */
273 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
274 MII_BCM7XXX_SHD_MODE_2);
275 if (ret < 0)
276 return ret;
277
278 return 0;
279}
280
281/* The 28nm EPHY does not support Clause 45 (MMD) used by bcm-phy-lib */
282static int bcm7xxx_28nm_ephy_apd_enable(struct phy_device *phydev)
283{
284 int ret;
285
286 /* set shadow mode 1 */
287 ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST,
288 MII_BRCM_FET_BT_SRE, 0);
289 if (ret < 0)
290 return ret;
291
292 /* Enable auto-power down */
293 ret = phy_set_clr_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
294 MII_BRCM_FET_SHDW_AS2_APDE, 0);
295 if (ret < 0)
296 return ret;
297
298 /* reset shadow mode 1 */
299 ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST, 0,
300 MII_BRCM_FET_BT_SRE);
301 if (ret < 0)
302 return ret;
303
304 return 0;
305}
306
307static int bcm7xxx_28nm_ephy_eee_enable(struct phy_device *phydev)
308{
309 int ret;
310
311 /* set shadow mode 2 */
312 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
313 MII_BCM7XXX_SHD_MODE_2, 0);
314 if (ret < 0)
315 return ret;
316
317 /* Advertise supported modes */
318 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
319 MII_BCM7XXX_SHD_3_AN_EEE_ADV);
320 if (ret < 0)
321 goto reset_shadow_mode;
322 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
323 MDIO_EEE_100TX);
324 if (ret < 0)
325 goto reset_shadow_mode;
326
327 /* Restore Defaults */
328 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
329 MII_BCM7XXX_SHD_3_PCS_CTRL_2);
330 if (ret < 0)
331 goto reset_shadow_mode;
332 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
333 MII_BCM7XXX_PCS_CTRL_2_DEF);
334 if (ret < 0)
335 goto reset_shadow_mode;
336
337 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
338 MII_BCM7XXX_SHD_3_EEE_THRESH);
339 if (ret < 0)
340 goto reset_shadow_mode;
341 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
342 MII_BCM7XXX_EEE_THRESH_DEF);
343 if (ret < 0)
344 goto reset_shadow_mode;
345
346 /* Enable EEE autonegotiation */
347 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
348 MII_BCM7XXX_SHD_3_AN_STAT);
349 if (ret < 0)
350 goto reset_shadow_mode;
351 ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
352 (MII_BCM7XXX_AN_NULL_MSG_EN | MII_BCM7XXX_AN_EEE_EN));
353 if (ret < 0)
354 goto reset_shadow_mode;
355
356reset_shadow_mode:
357 /* reset shadow mode 2 */
358 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
359 MII_BCM7XXX_SHD_MODE_2);
360 if (ret < 0)
361 return ret;
362
363 /* Restart autoneg */
364 phy_write(phydev, MII_BMCR,
365 (BMCR_SPEED100 | BMCR_ANENABLE | BMCR_ANRESTART));
366
367 return 0;
368}
369
370static int bcm7xxx_28nm_ephy_config_init(struct phy_device *phydev)
371{
372 u8 rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
373 int ret = 0;
374
375 pr_info_once("%s: %s PHY revision: 0x%02x\n",
376 phydev_name(phydev), phydev->drv->name, rev);
377
378 /* Dummy read to a register to workaround a possible issue upon reset
379 * where the internal inverter may not allow the first MDIO transaction
380 * to pass the MDIO management controller and make us return 0xffff for
381 * such reads.
382 */
383 phy_read(phydev, MII_BMSR);
384
385 /* Apply AFE software work-around if necessary */
386 if (rev == 0x01) {
387 ret = bcm7xxx_28nm_ephy_01_afe_config_init(phydev);
388 if (ret)
389 return ret;
390 }
391
392 ret = bcm7xxx_28nm_ephy_eee_enable(phydev);
393 if (ret)
394 return ret;
395
396 return bcm7xxx_28nm_ephy_apd_enable(phydev);
397}
398
399static int bcm7xxx_28nm_ephy_resume(struct phy_device *phydev)
400{
401 int ret;
402
403 /* Re-apply workarounds coming out suspend/resume */
404 ret = bcm7xxx_28nm_ephy_config_init(phydev);
405 if (ret)
406 return ret;
407
408 return genphy_config_aneg(phydev);
409}
410
Florian Fainellib560a582014-02-13 16:08:45 -0800411static int bcm7xxx_config_init(struct phy_device *phydev)
412{
413 int ret;
414
415 /* Enable 64 clock MDIO */
Florian Fainelli3ccc3052016-02-06 13:09:36 -0800416 phy_write(phydev, MII_BCM7XXX_AUX_MODE, MII_BCM7XXX_64CLK_MDIO);
Florian Fainellib560a582014-02-13 16:08:45 -0800417 phy_read(phydev, MII_BCM7XXX_AUX_MODE);
418
Florian Fainellib560a582014-02-13 16:08:45 -0800419 /* set shadow mode 2 */
420 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
421 MII_BCM7XXX_SHD_MODE_2, MII_BCM7XXX_SHD_MODE_2);
422 if (ret < 0)
423 return ret;
424
425 /* set iddq_clkbias */
426 phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0F00);
427 udelay(10);
428
429 /* reset iddq_clkbias */
430 phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0C00);
431
432 phy_write(phydev, MII_BCM7XXX_100TX_FALSE_CAR, 0x7555);
433
434 /* reset shadow mode 2 */
Florian Fainelli50d89982016-02-06 12:58:48 -0800435 ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0, MII_BCM7XXX_SHD_MODE_2);
Florian Fainellib560a582014-02-13 16:08:45 -0800436 if (ret < 0)
437 return ret;
438
439 return 0;
440}
441
442/* Workaround for putting the PHY in IDDQ mode, required
Florian Fainelli82c084f2014-08-14 16:52:53 -0700443 * for all BCM7XXX 40nm and 65nm PHYs
Florian Fainellib560a582014-02-13 16:08:45 -0800444 */
445static int bcm7xxx_suspend(struct phy_device *phydev)
446{
447 int ret;
Colin Ian King33c81822017-08-31 14:57:15 +0100448 static const struct bcm7xxx_regs {
Florian Fainellib560a582014-02-13 16:08:45 -0800449 int reg;
450 u16 value;
451 } bcm7xxx_suspend_cfg[] = {
452 { MII_BCM7XXX_TEST, 0x008b },
453 { MII_BCM7XXX_100TX_AUX_CTL, 0x01c0 },
454 { MII_BCM7XXX_100TX_DISC, 0x7000 },
455 { MII_BCM7XXX_TEST, 0x000f },
456 { MII_BCM7XXX_100TX_AUX_CTL, 0x20d0 },
457 { MII_BCM7XXX_TEST, 0x000b },
458 };
459 unsigned int i;
460
461 for (i = 0; i < ARRAY_SIZE(bcm7xxx_suspend_cfg); i++) {
462 ret = phy_write(phydev,
463 bcm7xxx_suspend_cfg[i].reg,
464 bcm7xxx_suspend_cfg[i].value);
465 if (ret)
466 return ret;
467 }
468
469 return 0;
470}
471
Florian Fainellidb888162016-11-22 11:40:57 -0800472static int bcm7xxx_28nm_get_tunable(struct phy_device *phydev,
473 struct ethtool_tunable *tuna,
474 void *data)
475{
476 switch (tuna->id) {
477 case ETHTOOL_PHY_DOWNSHIFT:
478 return bcm_phy_downshift_get(phydev, (u8 *)data);
479 default:
480 return -EOPNOTSUPP;
481 }
482}
483
484static int bcm7xxx_28nm_set_tunable(struct phy_device *phydev,
485 struct ethtool_tunable *tuna,
486 const void *data)
487{
488 u8 count = *(u8 *)data;
489 int ret;
490
491 switch (tuna->id) {
492 case ETHTOOL_PHY_DOWNSHIFT:
493 ret = bcm_phy_downshift_set(phydev, count);
494 break;
495 default:
496 return -EOPNOTSUPP;
497 }
498
499 if (ret)
500 return ret;
501
Colin Ian Kingcc1122b2018-03-01 10:23:03 +0000502 /* Disable EEE advertisement since this prevents the PHY
Florian Fainellidb888162016-11-22 11:40:57 -0800503 * from successfully linking up, trigger auto-negotiation restart
504 * to let the MAC decide what to do.
505 */
506 ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
507 if (ret)
508 return ret;
509
510 return genphy_restart_aneg(phydev);
511}
512
Florian Fainellib23ce9e2016-11-29 09:57:18 -0800513static void bcm7xxx_28nm_get_phy_stats(struct phy_device *phydev,
514 struct ethtool_stats *stats, u64 *data)
515{
516 struct bcm7xxx_phy_priv *priv = phydev->priv;
517
518 bcm_phy_get_stats(phydev, priv->stats, stats, data);
519}
520
521static int bcm7xxx_28nm_probe(struct phy_device *phydev)
522{
523 struct bcm7xxx_phy_priv *priv;
524
525 priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
526 if (!priv)
527 return -ENOMEM;
528
529 phydev->priv = priv;
530
531 priv->stats = devm_kcalloc(&phydev->mdio.dev,
532 bcm_phy_get_sset_count(phydev), sizeof(u64),
533 GFP_KERNEL);
534 if (!priv->stats)
535 return -ENOMEM;
536
537 return 0;
538}
539
Florian Fainelli153df3c2014-08-26 13:15:24 -0700540#define BCM7XXX_28NM_GPHY(_oui, _name) \
541{ \
542 .phy_id = (_oui), \
543 .phy_id_mask = 0xfffffff0, \
544 .name = _name, \
Heiner Kallweitdcdecdc2019-04-12 20:47:03 +0200545 /* PHY_GBIT_FEATURES */ \
Florian Fainelli153df3c2014-08-26 13:15:24 -0700546 .flags = PHY_IS_INTERNAL, \
Florian Fainelli2a9df742014-11-11 14:55:11 -0800547 .config_init = bcm7xxx_28nm_config_init, \
Florian Fainelli153df3c2014-08-26 13:15:24 -0700548 .resume = bcm7xxx_28nm_resume, \
Florian Fainellidb888162016-11-22 11:40:57 -0800549 .get_tunable = bcm7xxx_28nm_get_tunable, \
550 .set_tunable = bcm7xxx_28nm_set_tunable, \
Florian Fainellib23ce9e2016-11-29 09:57:18 -0800551 .get_sset_count = bcm_phy_get_sset_count, \
552 .get_strings = bcm_phy_get_strings, \
553 .get_stats = bcm7xxx_28nm_get_phy_stats, \
554 .probe = bcm7xxx_28nm_probe, \
Florian Fainelli153df3c2014-08-26 13:15:24 -0700555}
556
Doug Berger83ee1022017-03-13 17:41:32 -0700557#define BCM7XXX_28NM_EPHY(_oui, _name) \
558{ \
559 .phy_id = (_oui), \
560 .phy_id_mask = 0xfffffff0, \
561 .name = _name, \
Heiner Kallweitdcdecdc2019-04-12 20:47:03 +0200562 /* PHY_BASIC_FEATURES */ \
Doug Berger83ee1022017-03-13 17:41:32 -0700563 .flags = PHY_IS_INTERNAL, \
564 .config_init = bcm7xxx_28nm_ephy_config_init, \
Doug Berger83ee1022017-03-13 17:41:32 -0700565 .resume = bcm7xxx_28nm_ephy_resume, \
566 .get_sset_count = bcm_phy_get_sset_count, \
567 .get_strings = bcm_phy_get_strings, \
568 .get_stats = bcm7xxx_28nm_get_phy_stats, \
569 .probe = bcm7xxx_28nm_probe, \
570}
571
Florian Fainelli3125c082016-02-06 13:09:37 -0800572#define BCM7XXX_40NM_EPHY(_oui, _name) \
573{ \
574 .phy_id = (_oui), \
575 .phy_id_mask = 0xfffffff0, \
576 .name = _name, \
Heiner Kallweitdcdecdc2019-04-12 20:47:03 +0200577 /* PHY_BASIC_FEATURES */ \
Florian Fainelli3125c082016-02-06 13:09:37 -0800578 .flags = PHY_IS_INTERNAL, \
Doug Bergerfe586b82019-10-16 16:06:30 -0700579 .soft_reset = genphy_soft_reset, \
Florian Fainelli3125c082016-02-06 13:09:37 -0800580 .config_init = bcm7xxx_config_init, \
Florian Fainelli3125c082016-02-06 13:09:37 -0800581 .suspend = bcm7xxx_suspend, \
582 .resume = bcm7xxx_config_init, \
583}
584
Florian Fainellib560a582014-02-13 16:08:45 -0800585static struct phy_driver bcm7xxx_driver[] = {
Florian Fainelli430ad682014-08-26 13:15:27 -0700586 BCM7XXX_28NM_GPHY(PHY_ID_BCM7250, "Broadcom BCM7250"),
Justin Chen8572a1b2018-11-06 16:37:44 -0800587 BCM7XXX_28NM_EPHY(PHY_ID_BCM7255, "Broadcom BCM7255"),
Doug Berger83ee1022017-03-13 17:41:32 -0700588 BCM7XXX_28NM_EPHY(PHY_ID_BCM7260, "Broadcom BCM7260"),
589 BCM7XXX_28NM_EPHY(PHY_ID_BCM7268, "Broadcom BCM7268"),
590 BCM7XXX_28NM_EPHY(PHY_ID_BCM7271, "Broadcom BCM7271"),
Florian Fainelli582d0ac2017-01-20 12:36:33 -0800591 BCM7XXX_28NM_GPHY(PHY_ID_BCM7278, "Broadcom BCM7278"),
Florian Fainelli430ad682014-08-26 13:15:27 -0700592 BCM7XXX_28NM_GPHY(PHY_ID_BCM7364, "Broadcom BCM7364"),
Florian Fainelli153df3c2014-08-26 13:15:24 -0700593 BCM7XXX_28NM_GPHY(PHY_ID_BCM7366, "Broadcom BCM7366"),
Florian Fainellib08d46b2017-02-06 13:01:16 -0800594 BCM7XXX_28NM_GPHY(PHY_ID_BCM74371, "Broadcom BCM74371"),
Florian Fainelli153df3c2014-08-26 13:15:24 -0700595 BCM7XXX_28NM_GPHY(PHY_ID_BCM7439, "Broadcom BCM7439"),
Florian Fainelli59e33c22015-03-09 15:44:13 -0700596 BCM7XXX_28NM_GPHY(PHY_ID_BCM7439_2, "Broadcom BCM7439 (2)"),
Florian Fainelli153df3c2014-08-26 13:15:24 -0700597 BCM7XXX_28NM_GPHY(PHY_ID_BCM7445, "Broadcom BCM7445"),
Jaedon Shin4cef1912016-03-25 12:46:54 +0900598 BCM7XXX_40NM_EPHY(PHY_ID_BCM7346, "Broadcom BCM7346"),
599 BCM7XXX_40NM_EPHY(PHY_ID_BCM7362, "Broadcom BCM7362"),
Florian Fainelli3125c082016-02-06 13:09:37 -0800600 BCM7XXX_40NM_EPHY(PHY_ID_BCM7425, "Broadcom BCM7425"),
601 BCM7XXX_40NM_EPHY(PHY_ID_BCM7429, "Broadcom BCM7429"),
602 BCM7XXX_40NM_EPHY(PHY_ID_BCM7435, "Broadcom BCM7435"),
David S. Millerb6333532016-02-23 00:09:14 -0500603};
Florian Fainellib560a582014-02-13 16:08:45 -0800604
605static struct mdio_device_id __maybe_unused bcm7xxx_tbl[] = {
Florian Fainelli430ad682014-08-26 13:15:27 -0700606 { PHY_ID_BCM7250, 0xfffffff0, },
Justin Chen8572a1b2018-11-06 16:37:44 -0800607 { PHY_ID_BCM7255, 0xfffffff0, },
Doug Berger83ee1022017-03-13 17:41:32 -0700608 { PHY_ID_BCM7260, 0xfffffff0, },
609 { PHY_ID_BCM7268, 0xfffffff0, },
610 { PHY_ID_BCM7271, 0xfffffff0, },
Florian Fainelli582d0ac2017-01-20 12:36:33 -0800611 { PHY_ID_BCM7278, 0xfffffff0, },
Florian Fainelli430ad682014-08-26 13:15:27 -0700612 { PHY_ID_BCM7364, 0xfffffff0, },
Florian Fainellib560a582014-02-13 16:08:45 -0800613 { PHY_ID_BCM7366, 0xfffffff0, },
Jaedon Shin4cef1912016-03-25 12:46:54 +0900614 { PHY_ID_BCM7346, 0xfffffff0, },
615 { PHY_ID_BCM7362, 0xfffffff0, },
Petri Gyntherd068b022014-10-01 11:58:02 -0700616 { PHY_ID_BCM7425, 0xfffffff0, },
617 { PHY_ID_BCM7429, 0xfffffff0, },
Florian Fainellib08d46b2017-02-06 13:01:16 -0800618 { PHY_ID_BCM74371, 0xfffffff0, },
Florian Fainellib560a582014-02-13 16:08:45 -0800619 { PHY_ID_BCM7439, 0xfffffff0, },
Florian Fainelli9458cea2015-11-24 15:30:21 -0800620 { PHY_ID_BCM7435, 0xfffffff0, },
Florian Fainellib560a582014-02-13 16:08:45 -0800621 { PHY_ID_BCM7445, 0xfffffff0, },
Florian Fainellib560a582014-02-13 16:08:45 -0800622 { }
623};
624
Johan Hovold50fd7152014-11-11 19:45:59 +0100625module_phy_driver(bcm7xxx_driver);
Florian Fainellib560a582014-02-13 16:08:45 -0800626
627MODULE_DEVICE_TABLE(mdio, bcm7xxx_tbl);
628
629MODULE_DESCRIPTION("Broadcom BCM7xxx internal PHY driver");
630MODULE_LICENSE("GPL");
631MODULE_AUTHOR("Broadcom Corporation");