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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[deliverable/linux.git] / drivers / net / phy / micrel.c
1 /*
2 * drivers/net/phy/micrel.c
3 *
4 * Driver for Micrel PHYs
5 *
6 * Author: David J. Choi
7 *
8 * Copyright (c) 2010-2013 Micrel, Inc.
9 * Copyright (c) 2014 Johan Hovold <johan@kernel.org>
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 * Support : Micrel Phys:
17 * Giga phys: ksz9021, ksz9031
18 * 100/10 Phys : ksz8001, ksz8721, ksz8737, ksz8041
19 * ksz8021, ksz8031, ksz8051,
20 * ksz8081, ksz8091,
21 * ksz8061,
22 * Switch : ksz8873, ksz886x
23 */
24
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/phy.h>
28 #include <linux/micrel_phy.h>
29 #include <linux/of.h>
30 #include <linux/clk.h>
31
32 /* Operation Mode Strap Override */
33 #define MII_KSZPHY_OMSO 0x16
34 #define KSZPHY_OMSO_B_CAST_OFF BIT(9)
35 #define KSZPHY_OMSO_NAND_TREE_ON BIT(5)
36 #define KSZPHY_OMSO_RMII_OVERRIDE BIT(1)
37 #define KSZPHY_OMSO_MII_OVERRIDE BIT(0)
38
39 /* general Interrupt control/status reg in vendor specific block. */
40 #define MII_KSZPHY_INTCS 0x1B
41 #define KSZPHY_INTCS_JABBER BIT(15)
42 #define KSZPHY_INTCS_RECEIVE_ERR BIT(14)
43 #define KSZPHY_INTCS_PAGE_RECEIVE BIT(13)
44 #define KSZPHY_INTCS_PARELLEL BIT(12)
45 #define KSZPHY_INTCS_LINK_PARTNER_ACK BIT(11)
46 #define KSZPHY_INTCS_LINK_DOWN BIT(10)
47 #define KSZPHY_INTCS_REMOTE_FAULT BIT(9)
48 #define KSZPHY_INTCS_LINK_UP BIT(8)
49 #define KSZPHY_INTCS_ALL (KSZPHY_INTCS_LINK_UP |\
50 KSZPHY_INTCS_LINK_DOWN)
51
52 /* PHY Control 1 */
53 #define MII_KSZPHY_CTRL_1 0x1e
54
55 /* PHY Control 2 / PHY Control (if no PHY Control 1) */
56 #define MII_KSZPHY_CTRL_2 0x1f
57 #define MII_KSZPHY_CTRL MII_KSZPHY_CTRL_2
58 /* bitmap of PHY register to set interrupt mode */
59 #define KSZPHY_CTRL_INT_ACTIVE_HIGH BIT(9)
60 #define KSZPHY_RMII_REF_CLK_SEL BIT(7)
61
62 /* Write/read to/from extended registers */
63 #define MII_KSZPHY_EXTREG 0x0b
64 #define KSZPHY_EXTREG_WRITE 0x8000
65
66 #define MII_KSZPHY_EXTREG_WRITE 0x0c
67 #define MII_KSZPHY_EXTREG_READ 0x0d
68
69 /* Extended registers */
70 #define MII_KSZPHY_CLK_CONTROL_PAD_SKEW 0x104
71 #define MII_KSZPHY_RX_DATA_PAD_SKEW 0x105
72 #define MII_KSZPHY_TX_DATA_PAD_SKEW 0x106
73
74 #define PS_TO_REG 200
75
76 struct kszphy_hw_stat {
77 const char *string;
78 u8 reg;
79 u8 bits;
80 };
81
82 static struct kszphy_hw_stat kszphy_hw_stats[] = {
83 { "phy_receive_errors", 21, 16},
84 { "phy_idle_errors", 10, 8 },
85 };
86
87 struct kszphy_type {
88 u32 led_mode_reg;
89 u16 interrupt_level_mask;
90 bool has_broadcast_disable;
91 bool has_nand_tree_disable;
92 bool has_rmii_ref_clk_sel;
93 };
94
95 struct kszphy_priv {
96 const struct kszphy_type *type;
97 int led_mode;
98 bool rmii_ref_clk_sel;
99 bool rmii_ref_clk_sel_val;
100 u64 stats[ARRAY_SIZE(kszphy_hw_stats)];
101 };
102
103 static const struct kszphy_type ksz8021_type = {
104 .led_mode_reg = MII_KSZPHY_CTRL_2,
105 .has_broadcast_disable = true,
106 .has_nand_tree_disable = true,
107 .has_rmii_ref_clk_sel = true,
108 };
109
110 static const struct kszphy_type ksz8041_type = {
111 .led_mode_reg = MII_KSZPHY_CTRL_1,
112 };
113
114 static const struct kszphy_type ksz8051_type = {
115 .led_mode_reg = MII_KSZPHY_CTRL_2,
116 .has_nand_tree_disable = true,
117 };
118
119 static const struct kszphy_type ksz8081_type = {
120 .led_mode_reg = MII_KSZPHY_CTRL_2,
121 .has_broadcast_disable = true,
122 .has_nand_tree_disable = true,
123 .has_rmii_ref_clk_sel = true,
124 };
125
126 static const struct kszphy_type ks8737_type = {
127 .interrupt_level_mask = BIT(14),
128 };
129
130 static const struct kszphy_type ksz9021_type = {
131 .interrupt_level_mask = BIT(14),
132 };
133
134 static int kszphy_extended_write(struct phy_device *phydev,
135 u32 regnum, u16 val)
136 {
137 phy_write(phydev, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | regnum);
138 return phy_write(phydev, MII_KSZPHY_EXTREG_WRITE, val);
139 }
140
141 static int kszphy_extended_read(struct phy_device *phydev,
142 u32 regnum)
143 {
144 phy_write(phydev, MII_KSZPHY_EXTREG, regnum);
145 return phy_read(phydev, MII_KSZPHY_EXTREG_READ);
146 }
147
148 static int kszphy_ack_interrupt(struct phy_device *phydev)
149 {
150 /* bit[7..0] int status, which is a read and clear register. */
151 int rc;
152
153 rc = phy_read(phydev, MII_KSZPHY_INTCS);
154
155 return (rc < 0) ? rc : 0;
156 }
157
158 static int kszphy_config_intr(struct phy_device *phydev)
159 {
160 const struct kszphy_type *type = phydev->drv->driver_data;
161 int temp;
162 u16 mask;
163
164 if (type && type->interrupt_level_mask)
165 mask = type->interrupt_level_mask;
166 else
167 mask = KSZPHY_CTRL_INT_ACTIVE_HIGH;
168
169 /* set the interrupt pin active low */
170 temp = phy_read(phydev, MII_KSZPHY_CTRL);
171 if (temp < 0)
172 return temp;
173 temp &= ~mask;
174 phy_write(phydev, MII_KSZPHY_CTRL, temp);
175
176 /* enable / disable interrupts */
177 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
178 temp = KSZPHY_INTCS_ALL;
179 else
180 temp = 0;
181
182 return phy_write(phydev, MII_KSZPHY_INTCS, temp);
183 }
184
185 static int kszphy_rmii_clk_sel(struct phy_device *phydev, bool val)
186 {
187 int ctrl;
188
189 ctrl = phy_read(phydev, MII_KSZPHY_CTRL);
190 if (ctrl < 0)
191 return ctrl;
192
193 if (val)
194 ctrl |= KSZPHY_RMII_REF_CLK_SEL;
195 else
196 ctrl &= ~KSZPHY_RMII_REF_CLK_SEL;
197
198 return phy_write(phydev, MII_KSZPHY_CTRL, ctrl);
199 }
200
201 static int kszphy_setup_led(struct phy_device *phydev, u32 reg, int val)
202 {
203 int rc, temp, shift;
204
205 switch (reg) {
206 case MII_KSZPHY_CTRL_1:
207 shift = 14;
208 break;
209 case MII_KSZPHY_CTRL_2:
210 shift = 4;
211 break;
212 default:
213 return -EINVAL;
214 }
215
216 temp = phy_read(phydev, reg);
217 if (temp < 0) {
218 rc = temp;
219 goto out;
220 }
221
222 temp &= ~(3 << shift);
223 temp |= val << shift;
224 rc = phy_write(phydev, reg, temp);
225 out:
226 if (rc < 0)
227 phydev_err(phydev, "failed to set led mode\n");
228
229 return rc;
230 }
231
232 /* Disable PHY address 0 as the broadcast address, so that it can be used as a
233 * unique (non-broadcast) address on a shared bus.
234 */
235 static int kszphy_broadcast_disable(struct phy_device *phydev)
236 {
237 int ret;
238
239 ret = phy_read(phydev, MII_KSZPHY_OMSO);
240 if (ret < 0)
241 goto out;
242
243 ret = phy_write(phydev, MII_KSZPHY_OMSO, ret | KSZPHY_OMSO_B_CAST_OFF);
244 out:
245 if (ret)
246 phydev_err(phydev, "failed to disable broadcast address\n");
247
248 return ret;
249 }
250
251 static int kszphy_nand_tree_disable(struct phy_device *phydev)
252 {
253 int ret;
254
255 ret = phy_read(phydev, MII_KSZPHY_OMSO);
256 if (ret < 0)
257 goto out;
258
259 if (!(ret & KSZPHY_OMSO_NAND_TREE_ON))
260 return 0;
261
262 ret = phy_write(phydev, MII_KSZPHY_OMSO,
263 ret & ~KSZPHY_OMSO_NAND_TREE_ON);
264 out:
265 if (ret)
266 phydev_err(phydev, "failed to disable NAND tree mode\n");
267
268 return ret;
269 }
270
271 static int kszphy_config_init(struct phy_device *phydev)
272 {
273 struct kszphy_priv *priv = phydev->priv;
274 const struct kszphy_type *type;
275 int ret;
276
277 if (!priv)
278 return 0;
279
280 type = priv->type;
281
282 if (type->has_broadcast_disable)
283 kszphy_broadcast_disable(phydev);
284
285 if (type->has_nand_tree_disable)
286 kszphy_nand_tree_disable(phydev);
287
288 if (priv->rmii_ref_clk_sel) {
289 ret = kszphy_rmii_clk_sel(phydev, priv->rmii_ref_clk_sel_val);
290 if (ret) {
291 phydev_err(phydev,
292 "failed to set rmii reference clock\n");
293 return ret;
294 }
295 }
296
297 if (priv->led_mode >= 0)
298 kszphy_setup_led(phydev, type->led_mode_reg, priv->led_mode);
299
300 if (phy_interrupt_is_valid(phydev)) {
301 int ctl = phy_read(phydev, MII_BMCR);
302
303 if (ctl < 0)
304 return ctl;
305
306 ret = phy_write(phydev, MII_BMCR, ctl & ~BMCR_ANENABLE);
307 if (ret < 0)
308 return ret;
309 }
310
311 return 0;
312 }
313
314 static int ksz9021_load_values_from_of(struct phy_device *phydev,
315 const struct device_node *of_node,
316 u16 reg,
317 const char *field1, const char *field2,
318 const char *field3, const char *field4)
319 {
320 int val1 = -1;
321 int val2 = -2;
322 int val3 = -3;
323 int val4 = -4;
324 int newval;
325 int matches = 0;
326
327 if (!of_property_read_u32(of_node, field1, &val1))
328 matches++;
329
330 if (!of_property_read_u32(of_node, field2, &val2))
331 matches++;
332
333 if (!of_property_read_u32(of_node, field3, &val3))
334 matches++;
335
336 if (!of_property_read_u32(of_node, field4, &val4))
337 matches++;
338
339 if (!matches)
340 return 0;
341
342 if (matches < 4)
343 newval = kszphy_extended_read(phydev, reg);
344 else
345 newval = 0;
346
347 if (val1 != -1)
348 newval = ((newval & 0xfff0) | ((val1 / PS_TO_REG) & 0xf) << 0);
349
350 if (val2 != -2)
351 newval = ((newval & 0xff0f) | ((val2 / PS_TO_REG) & 0xf) << 4);
352
353 if (val3 != -3)
354 newval = ((newval & 0xf0ff) | ((val3 / PS_TO_REG) & 0xf) << 8);
355
356 if (val4 != -4)
357 newval = ((newval & 0x0fff) | ((val4 / PS_TO_REG) & 0xf) << 12);
358
359 return kszphy_extended_write(phydev, reg, newval);
360 }
361
362 static int ksz9021_config_init(struct phy_device *phydev)
363 {
364 const struct device *dev = &phydev->mdio.dev;
365 const struct device_node *of_node = dev->of_node;
366 const struct device *dev_walker;
367
368 /* The Micrel driver has a deprecated option to place phy OF
369 * properties in the MAC node. Walk up the tree of devices to
370 * find a device with an OF node.
371 */
372 dev_walker = &phydev->mdio.dev;
373 do {
374 of_node = dev_walker->of_node;
375 dev_walker = dev_walker->parent;
376
377 } while (!of_node && dev_walker);
378
379 if (of_node) {
380 ksz9021_load_values_from_of(phydev, of_node,
381 MII_KSZPHY_CLK_CONTROL_PAD_SKEW,
382 "txen-skew-ps", "txc-skew-ps",
383 "rxdv-skew-ps", "rxc-skew-ps");
384 ksz9021_load_values_from_of(phydev, of_node,
385 MII_KSZPHY_RX_DATA_PAD_SKEW,
386 "rxd0-skew-ps", "rxd1-skew-ps",
387 "rxd2-skew-ps", "rxd3-skew-ps");
388 ksz9021_load_values_from_of(phydev, of_node,
389 MII_KSZPHY_TX_DATA_PAD_SKEW,
390 "txd0-skew-ps", "txd1-skew-ps",
391 "txd2-skew-ps", "txd3-skew-ps");
392 }
393 return 0;
394 }
395
396 #define MII_KSZ9031RN_MMD_CTRL_REG 0x0d
397 #define MII_KSZ9031RN_MMD_REGDATA_REG 0x0e
398 #define OP_DATA 1
399 #define KSZ9031_PS_TO_REG 60
400
401 /* Extended registers */
402 /* MMD Address 0x0 */
403 #define MII_KSZ9031RN_FLP_BURST_TX_LO 3
404 #define MII_KSZ9031RN_FLP_BURST_TX_HI 4
405
406 /* MMD Address 0x2 */
407 #define MII_KSZ9031RN_CONTROL_PAD_SKEW 4
408 #define MII_KSZ9031RN_RX_DATA_PAD_SKEW 5
409 #define MII_KSZ9031RN_TX_DATA_PAD_SKEW 6
410 #define MII_KSZ9031RN_CLK_PAD_SKEW 8
411
412 static int ksz9031_extended_write(struct phy_device *phydev,
413 u8 mode, u32 dev_addr, u32 regnum, u16 val)
414 {
415 phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, dev_addr);
416 phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, regnum);
417 phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, (mode << 14) | dev_addr);
418 return phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, val);
419 }
420
421 static int ksz9031_extended_read(struct phy_device *phydev,
422 u8 mode, u32 dev_addr, u32 regnum)
423 {
424 phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, dev_addr);
425 phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, regnum);
426 phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, (mode << 14) | dev_addr);
427 return phy_read(phydev, MII_KSZ9031RN_MMD_REGDATA_REG);
428 }
429
430 static int ksz9031_of_load_skew_values(struct phy_device *phydev,
431 const struct device_node *of_node,
432 u16 reg, size_t field_sz,
433 const char *field[], u8 numfields)
434 {
435 int val[4] = {-1, -2, -3, -4};
436 int matches = 0;
437 u16 mask;
438 u16 maxval;
439 u16 newval;
440 int i;
441
442 for (i = 0; i < numfields; i++)
443 if (!of_property_read_u32(of_node, field[i], val + i))
444 matches++;
445
446 if (!matches)
447 return 0;
448
449 if (matches < numfields)
450 newval = ksz9031_extended_read(phydev, OP_DATA, 2, reg);
451 else
452 newval = 0;
453
454 maxval = (field_sz == 4) ? 0xf : 0x1f;
455 for (i = 0; i < numfields; i++)
456 if (val[i] != -(i + 1)) {
457 mask = 0xffff;
458 mask ^= maxval << (field_sz * i);
459 newval = (newval & mask) |
460 (((val[i] / KSZ9031_PS_TO_REG) & maxval)
461 << (field_sz * i));
462 }
463
464 return ksz9031_extended_write(phydev, OP_DATA, 2, reg, newval);
465 }
466
467 static int ksz9031_center_flp_timing(struct phy_device *phydev)
468 {
469 int result;
470
471 /* Center KSZ9031RNX FLP timing at 16ms. */
472 result = ksz9031_extended_write(phydev, OP_DATA, 0,
473 MII_KSZ9031RN_FLP_BURST_TX_HI, 0x0006);
474 result = ksz9031_extended_write(phydev, OP_DATA, 0,
475 MII_KSZ9031RN_FLP_BURST_TX_LO, 0x1A80);
476
477 if (result)
478 return result;
479
480 return genphy_restart_aneg(phydev);
481 }
482
483 static int ksz9031_config_init(struct phy_device *phydev)
484 {
485 const struct device *dev = &phydev->mdio.dev;
486 const struct device_node *of_node = dev->of_node;
487 static const char *clk_skews[2] = {"rxc-skew-ps", "txc-skew-ps"};
488 static const char *rx_data_skews[4] = {
489 "rxd0-skew-ps", "rxd1-skew-ps",
490 "rxd2-skew-ps", "rxd3-skew-ps"
491 };
492 static const char *tx_data_skews[4] = {
493 "txd0-skew-ps", "txd1-skew-ps",
494 "txd2-skew-ps", "txd3-skew-ps"
495 };
496 static const char *control_skews[2] = {"txen-skew-ps", "rxdv-skew-ps"};
497 const struct device *dev_walker;
498
499 /* The Micrel driver has a deprecated option to place phy OF
500 * properties in the MAC node. Walk up the tree of devices to
501 * find a device with an OF node.
502 */
503 dev_walker = &phydev->mdio.dev;
504 do {
505 of_node = dev_walker->of_node;
506 dev_walker = dev_walker->parent;
507 } while (!of_node && dev_walker);
508
509 if (of_node) {
510 ksz9031_of_load_skew_values(phydev, of_node,
511 MII_KSZ9031RN_CLK_PAD_SKEW, 5,
512 clk_skews, 2);
513
514 ksz9031_of_load_skew_values(phydev, of_node,
515 MII_KSZ9031RN_CONTROL_PAD_SKEW, 4,
516 control_skews, 2);
517
518 ksz9031_of_load_skew_values(phydev, of_node,
519 MII_KSZ9031RN_RX_DATA_PAD_SKEW, 4,
520 rx_data_skews, 4);
521
522 ksz9031_of_load_skew_values(phydev, of_node,
523 MII_KSZ9031RN_TX_DATA_PAD_SKEW, 4,
524 tx_data_skews, 4);
525 }
526
527 return ksz9031_center_flp_timing(phydev);
528 }
529
530 #define KSZ8873MLL_GLOBAL_CONTROL_4 0x06
531 #define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX BIT(6)
532 #define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED BIT(4)
533 static int ksz8873mll_read_status(struct phy_device *phydev)
534 {
535 int regval;
536
537 /* dummy read */
538 regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
539
540 regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
541
542 if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX)
543 phydev->duplex = DUPLEX_HALF;
544 else
545 phydev->duplex = DUPLEX_FULL;
546
547 if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_SPEED)
548 phydev->speed = SPEED_10;
549 else
550 phydev->speed = SPEED_100;
551
552 phydev->link = 1;
553 phydev->pause = phydev->asym_pause = 0;
554
555 return 0;
556 }
557
558 static int ksz9031_read_status(struct phy_device *phydev)
559 {
560 int err;
561 int regval;
562
563 err = genphy_read_status(phydev);
564 if (err)
565 return err;
566
567 /* Make sure the PHY is not broken. Read idle error count,
568 * and reset the PHY if it is maxed out.
569 */
570 regval = phy_read(phydev, MII_STAT1000);
571 if ((regval & 0xFF) == 0xFF) {
572 phy_init_hw(phydev);
573 phydev->link = 0;
574 }
575
576 return 0;
577 }
578
579 static int ksz8873mll_config_aneg(struct phy_device *phydev)
580 {
581 return 0;
582 }
583
584 /* This routine returns -1 as an indication to the caller that the
585 * Micrel ksz9021 10/100/1000 PHY does not support standard IEEE
586 * MMD extended PHY registers.
587 */
588 static int
589 ksz9021_rd_mmd_phyreg(struct phy_device *phydev, int ptrad, int devnum,
590 int regnum)
591 {
592 return -1;
593 }
594
595 /* This routine does nothing since the Micrel ksz9021 does not support
596 * standard IEEE MMD extended PHY registers.
597 */
598 static void
599 ksz9021_wr_mmd_phyreg(struct phy_device *phydev, int ptrad, int devnum,
600 int regnum, u32 val)
601 {
602 }
603
604 static int kszphy_get_sset_count(struct phy_device *phydev)
605 {
606 return ARRAY_SIZE(kszphy_hw_stats);
607 }
608
609 static void kszphy_get_strings(struct phy_device *phydev, u8 *data)
610 {
611 int i;
612
613 for (i = 0; i < ARRAY_SIZE(kszphy_hw_stats); i++) {
614 memcpy(data + i * ETH_GSTRING_LEN,
615 kszphy_hw_stats[i].string, ETH_GSTRING_LEN);
616 }
617 }
618
619 #ifndef UINT64_MAX
620 #define UINT64_MAX (u64)(~((u64)0))
621 #endif
622 static u64 kszphy_get_stat(struct phy_device *phydev, int i)
623 {
624 struct kszphy_hw_stat stat = kszphy_hw_stats[i];
625 struct kszphy_priv *priv = phydev->priv;
626 int val;
627 u64 ret;
628
629 val = phy_read(phydev, stat.reg);
630 if (val < 0) {
631 ret = UINT64_MAX;
632 } else {
633 val = val & ((1 << stat.bits) - 1);
634 priv->stats[i] += val;
635 ret = priv->stats[i];
636 }
637
638 return ret;
639 }
640
641 static void kszphy_get_stats(struct phy_device *phydev,
642 struct ethtool_stats *stats, u64 *data)
643 {
644 int i;
645
646 for (i = 0; i < ARRAY_SIZE(kszphy_hw_stats); i++)
647 data[i] = kszphy_get_stat(phydev, i);
648 }
649
650 static int kszphy_resume(struct phy_device *phydev)
651 {
652 int value;
653
654 mutex_lock(&phydev->lock);
655
656 value = phy_read(phydev, MII_BMCR);
657 phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN);
658
659 kszphy_config_intr(phydev);
660 mutex_unlock(&phydev->lock);
661
662 return 0;
663 }
664
665 static int kszphy_probe(struct phy_device *phydev)
666 {
667 const struct kszphy_type *type = phydev->drv->driver_data;
668 const struct device_node *np = phydev->mdio.dev.of_node;
669 struct kszphy_priv *priv;
670 struct clk *clk;
671 int ret;
672
673 priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
674 if (!priv)
675 return -ENOMEM;
676
677 phydev->priv = priv;
678
679 priv->type = type;
680
681 if (type->led_mode_reg) {
682 ret = of_property_read_u32(np, "micrel,led-mode",
683 &priv->led_mode);
684 if (ret)
685 priv->led_mode = -1;
686
687 if (priv->led_mode > 3) {
688 phydev_err(phydev, "invalid led mode: 0x%02x\n",
689 priv->led_mode);
690 priv->led_mode = -1;
691 }
692 } else {
693 priv->led_mode = -1;
694 }
695
696 clk = devm_clk_get(&phydev->mdio.dev, "rmii-ref");
697 /* NOTE: clk may be NULL if building without CONFIG_HAVE_CLK */
698 if (!IS_ERR_OR_NULL(clk)) {
699 unsigned long rate = clk_get_rate(clk);
700 bool rmii_ref_clk_sel_25_mhz;
701
702 priv->rmii_ref_clk_sel = type->has_rmii_ref_clk_sel;
703 rmii_ref_clk_sel_25_mhz = of_property_read_bool(np,
704 "micrel,rmii-reference-clock-select-25-mhz");
705
706 if (rate > 24500000 && rate < 25500000) {
707 priv->rmii_ref_clk_sel_val = rmii_ref_clk_sel_25_mhz;
708 } else if (rate > 49500000 && rate < 50500000) {
709 priv->rmii_ref_clk_sel_val = !rmii_ref_clk_sel_25_mhz;
710 } else {
711 phydev_err(phydev, "Clock rate out of range: %ld\n",
712 rate);
713 return -EINVAL;
714 }
715 }
716
717 /* Support legacy board-file configuration */
718 if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) {
719 priv->rmii_ref_clk_sel = true;
720 priv->rmii_ref_clk_sel_val = true;
721 }
722
723 return 0;
724 }
725
726 static struct phy_driver ksphy_driver[] = {
727 {
728 .phy_id = PHY_ID_KS8737,
729 .phy_id_mask = 0x00fffff0,
730 .name = "Micrel KS8737",
731 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
732 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
733 .driver_data = &ks8737_type,
734 .config_init = kszphy_config_init,
735 .config_aneg = genphy_config_aneg,
736 .read_status = genphy_read_status,
737 .ack_interrupt = kszphy_ack_interrupt,
738 .config_intr = kszphy_config_intr,
739 .get_sset_count = kszphy_get_sset_count,
740 .get_strings = kszphy_get_strings,
741 .get_stats = kszphy_get_stats,
742 .suspend = genphy_suspend,
743 .resume = genphy_resume,
744 }, {
745 .phy_id = PHY_ID_KSZ8021,
746 .phy_id_mask = 0x00ffffff,
747 .name = "Micrel KSZ8021 or KSZ8031",
748 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
749 SUPPORTED_Asym_Pause),
750 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
751 .driver_data = &ksz8021_type,
752 .probe = kszphy_probe,
753 .config_init = kszphy_config_init,
754 .config_aneg = genphy_config_aneg,
755 .read_status = genphy_read_status,
756 .ack_interrupt = kszphy_ack_interrupt,
757 .config_intr = kszphy_config_intr,
758 .get_sset_count = kszphy_get_sset_count,
759 .get_strings = kszphy_get_strings,
760 .get_stats = kszphy_get_stats,
761 .suspend = genphy_suspend,
762 .resume = genphy_resume,
763 }, {
764 .phy_id = PHY_ID_KSZ8031,
765 .phy_id_mask = 0x00ffffff,
766 .name = "Micrel KSZ8031",
767 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
768 SUPPORTED_Asym_Pause),
769 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
770 .driver_data = &ksz8021_type,
771 .probe = kszphy_probe,
772 .config_init = kszphy_config_init,
773 .config_aneg = genphy_config_aneg,
774 .read_status = genphy_read_status,
775 .ack_interrupt = kszphy_ack_interrupt,
776 .config_intr = kszphy_config_intr,
777 .get_sset_count = kszphy_get_sset_count,
778 .get_strings = kszphy_get_strings,
779 .get_stats = kszphy_get_stats,
780 .suspend = genphy_suspend,
781 .resume = genphy_resume,
782 }, {
783 .phy_id = PHY_ID_KSZ8041,
784 .phy_id_mask = 0x00fffff0,
785 .name = "Micrel KSZ8041",
786 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
787 | SUPPORTED_Asym_Pause),
788 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
789 .driver_data = &ksz8041_type,
790 .probe = kszphy_probe,
791 .config_init = kszphy_config_init,
792 .config_aneg = genphy_config_aneg,
793 .read_status = genphy_read_status,
794 .ack_interrupt = kszphy_ack_interrupt,
795 .config_intr = kszphy_config_intr,
796 .get_sset_count = kszphy_get_sset_count,
797 .get_strings = kszphy_get_strings,
798 .get_stats = kszphy_get_stats,
799 .suspend = genphy_suspend,
800 .resume = genphy_resume,
801 }, {
802 .phy_id = PHY_ID_KSZ8041RNLI,
803 .phy_id_mask = 0x00fffff0,
804 .name = "Micrel KSZ8041RNLI",
805 .features = PHY_BASIC_FEATURES |
806 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
807 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
808 .driver_data = &ksz8041_type,
809 .probe = kszphy_probe,
810 .config_init = kszphy_config_init,
811 .config_aneg = genphy_config_aneg,
812 .read_status = genphy_read_status,
813 .ack_interrupt = kszphy_ack_interrupt,
814 .config_intr = kszphy_config_intr,
815 .get_sset_count = kszphy_get_sset_count,
816 .get_strings = kszphy_get_strings,
817 .get_stats = kszphy_get_stats,
818 .suspend = genphy_suspend,
819 .resume = genphy_resume,
820 }, {
821 .phy_id = PHY_ID_KSZ8051,
822 .phy_id_mask = 0x00fffff0,
823 .name = "Micrel KSZ8051",
824 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
825 | SUPPORTED_Asym_Pause),
826 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
827 .driver_data = &ksz8051_type,
828 .probe = kszphy_probe,
829 .config_init = kszphy_config_init,
830 .config_aneg = genphy_config_aneg,
831 .read_status = genphy_read_status,
832 .ack_interrupt = kszphy_ack_interrupt,
833 .config_intr = kszphy_config_intr,
834 .get_sset_count = kszphy_get_sset_count,
835 .get_strings = kszphy_get_strings,
836 .get_stats = kszphy_get_stats,
837 .suspend = genphy_suspend,
838 .resume = genphy_resume,
839 }, {
840 .phy_id = PHY_ID_KSZ8001,
841 .name = "Micrel KSZ8001 or KS8721",
842 .phy_id_mask = 0x00ffffff,
843 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
844 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
845 .driver_data = &ksz8041_type,
846 .probe = kszphy_probe,
847 .config_init = kszphy_config_init,
848 .config_aneg = genphy_config_aneg,
849 .read_status = genphy_read_status,
850 .ack_interrupt = kszphy_ack_interrupt,
851 .config_intr = kszphy_config_intr,
852 .get_sset_count = kszphy_get_sset_count,
853 .get_strings = kszphy_get_strings,
854 .get_stats = kszphy_get_stats,
855 .suspend = genphy_suspend,
856 .resume = genphy_resume,
857 }, {
858 .phy_id = PHY_ID_KSZ8081,
859 .name = "Micrel KSZ8081 or KSZ8091",
860 .phy_id_mask = 0x00fffff0,
861 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
862 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
863 .driver_data = &ksz8081_type,
864 .probe = kszphy_probe,
865 .config_init = kszphy_config_init,
866 .config_aneg = genphy_config_aneg,
867 .read_status = genphy_read_status,
868 .ack_interrupt = kszphy_ack_interrupt,
869 .config_intr = kszphy_config_intr,
870 .get_sset_count = kszphy_get_sset_count,
871 .get_strings = kszphy_get_strings,
872 .get_stats = kszphy_get_stats,
873 .suspend = genphy_suspend,
874 .resume = kszphy_resume,
875 }, {
876 .phy_id = PHY_ID_KSZ8061,
877 .name = "Micrel KSZ8061",
878 .phy_id_mask = 0x00fffff0,
879 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
880 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
881 .config_init = kszphy_config_init,
882 .config_aneg = genphy_config_aneg,
883 .read_status = genphy_read_status,
884 .ack_interrupt = kszphy_ack_interrupt,
885 .config_intr = kszphy_config_intr,
886 .get_sset_count = kszphy_get_sset_count,
887 .get_strings = kszphy_get_strings,
888 .get_stats = kszphy_get_stats,
889 .suspend = genphy_suspend,
890 .resume = genphy_resume,
891 }, {
892 .phy_id = PHY_ID_KSZ9021,
893 .phy_id_mask = 0x000ffffe,
894 .name = "Micrel KSZ9021 Gigabit PHY",
895 .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause),
896 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
897 .driver_data = &ksz9021_type,
898 .config_init = ksz9021_config_init,
899 .config_aneg = genphy_config_aneg,
900 .read_status = genphy_read_status,
901 .ack_interrupt = kszphy_ack_interrupt,
902 .config_intr = kszphy_config_intr,
903 .get_sset_count = kszphy_get_sset_count,
904 .get_strings = kszphy_get_strings,
905 .get_stats = kszphy_get_stats,
906 .suspend = genphy_suspend,
907 .resume = genphy_resume,
908 .read_mmd_indirect = ksz9021_rd_mmd_phyreg,
909 .write_mmd_indirect = ksz9021_wr_mmd_phyreg,
910 }, {
911 .phy_id = PHY_ID_KSZ9031,
912 .phy_id_mask = 0x00fffff0,
913 .name = "Micrel KSZ9031 Gigabit PHY",
914 .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause),
915 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
916 .driver_data = &ksz9021_type,
917 .config_init = ksz9031_config_init,
918 .config_aneg = genphy_config_aneg,
919 .read_status = ksz9031_read_status,
920 .ack_interrupt = kszphy_ack_interrupt,
921 .config_intr = kszphy_config_intr,
922 .get_sset_count = kszphy_get_sset_count,
923 .get_strings = kszphy_get_strings,
924 .get_stats = kszphy_get_stats,
925 .suspend = genphy_suspend,
926 .resume = genphy_resume,
927 }, {
928 .phy_id = PHY_ID_KSZ8873MLL,
929 .phy_id_mask = 0x00fffff0,
930 .name = "Micrel KSZ8873MLL Switch",
931 .features = (SUPPORTED_Pause | SUPPORTED_Asym_Pause),
932 .flags = PHY_HAS_MAGICANEG,
933 .config_init = kszphy_config_init,
934 .config_aneg = ksz8873mll_config_aneg,
935 .read_status = ksz8873mll_read_status,
936 .get_sset_count = kszphy_get_sset_count,
937 .get_strings = kszphy_get_strings,
938 .get_stats = kszphy_get_stats,
939 .suspend = genphy_suspend,
940 .resume = genphy_resume,
941 }, {
942 .phy_id = PHY_ID_KSZ886X,
943 .phy_id_mask = 0x00fffff0,
944 .name = "Micrel KSZ886X Switch",
945 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
946 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
947 .config_init = kszphy_config_init,
948 .config_aneg = genphy_config_aneg,
949 .read_status = genphy_read_status,
950 .get_sset_count = kszphy_get_sset_count,
951 .get_strings = kszphy_get_strings,
952 .get_stats = kszphy_get_stats,
953 .suspend = genphy_suspend,
954 .resume = genphy_resume,
955 } };
956
957 module_phy_driver(ksphy_driver);
958
959 MODULE_DESCRIPTION("Micrel PHY driver");
960 MODULE_AUTHOR("David J. Choi");
961 MODULE_LICENSE("GPL");
962
963 static struct mdio_device_id __maybe_unused micrel_tbl[] = {
964 { PHY_ID_KSZ9021, 0x000ffffe },
965 { PHY_ID_KSZ9031, 0x00fffff0 },
966 { PHY_ID_KSZ8001, 0x00ffffff },
967 { PHY_ID_KS8737, 0x00fffff0 },
968 { PHY_ID_KSZ8021, 0x00ffffff },
969 { PHY_ID_KSZ8031, 0x00ffffff },
970 { PHY_ID_KSZ8041, 0x00fffff0 },
971 { PHY_ID_KSZ8051, 0x00fffff0 },
972 { PHY_ID_KSZ8061, 0x00fffff0 },
973 { PHY_ID_KSZ8081, 0x00fffff0 },
974 { PHY_ID_KSZ8873MLL, 0x00fffff0 },
975 { PHY_ID_KSZ886X, 0x00fffff0 },
976 { }
977 };
978
979 MODULE_DEVICE_TABLE(mdio, micrel_tbl);
Linux kernel - Deliverables
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