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1/*
2 * Copyright (C) 2012 Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
3 * Copyright (C) 2016 Hauke Mehrtens <hauke@hauke-m.de>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16#include <linux/mdio.h>
17#include <linux/module.h>
18#include <linux/phy.h>
19#include <linux/of.h>
20
21#define XWAY_MDIO_IMASK 0x19 /* interrupt mask */
22#define XWAY_MDIO_ISTAT 0x1A /* interrupt status */
23
24#define XWAY_MDIO_INIT_WOL BIT(15) /* Wake-On-LAN */
25#define XWAY_MDIO_INIT_MSRE BIT(14)
26#define XWAY_MDIO_INIT_NPRX BIT(13)
27#define XWAY_MDIO_INIT_NPTX BIT(12)
28#define XWAY_MDIO_INIT_ANE BIT(11) /* Auto-Neg error */
29#define XWAY_MDIO_INIT_ANC BIT(10) /* Auto-Neg complete */
30#define XWAY_MDIO_INIT_ADSC BIT(5) /* Link auto-downspeed detect */
31#define XWAY_MDIO_INIT_MPIPC BIT(4)
32#define XWAY_MDIO_INIT_MDIXC BIT(3)
33#define XWAY_MDIO_INIT_DXMC BIT(2) /* Duplex mode change */
34#define XWAY_MDIO_INIT_LSPC BIT(1) /* Link speed change */
35#define XWAY_MDIO_INIT_LSTC BIT(0) /* Link state change */
36#define XWAY_MDIO_INIT_MASK (XWAY_MDIO_INIT_LSTC | \
37 XWAY_MDIO_INIT_ADSC)
38
39#define ADVERTISED_MPD BIT(10) /* Multi-port device */
40
41/* LED Configuration */
42#define XWAY_MMD_LEDCH 0x01E0
43/* Inverse of SCAN Function */
44#define XWAY_MMD_LEDCH_NACS_NONE 0x0000
45#define XWAY_MMD_LEDCH_NACS_LINK 0x0001
46#define XWAY_MMD_LEDCH_NACS_PDOWN 0x0002
47#define XWAY_MMD_LEDCH_NACS_EEE 0x0003
48#define XWAY_MMD_LEDCH_NACS_ANEG 0x0004
49#define XWAY_MMD_LEDCH_NACS_ABIST 0x0005
50#define XWAY_MMD_LEDCH_NACS_CDIAG 0x0006
51#define XWAY_MMD_LEDCH_NACS_TEST 0x0007
52/* Slow Blink Frequency */
53#define XWAY_MMD_LEDCH_SBF_F02HZ 0x0000
54#define XWAY_MMD_LEDCH_SBF_F04HZ 0x0010
55#define XWAY_MMD_LEDCH_SBF_F08HZ 0x0020
56#define XWAY_MMD_LEDCH_SBF_F16HZ 0x0030
57/* Fast Blink Frequency */
58#define XWAY_MMD_LEDCH_FBF_F02HZ 0x0000
59#define XWAY_MMD_LEDCH_FBF_F04HZ 0x0040
60#define XWAY_MMD_LEDCH_FBF_F08HZ 0x0080
61#define XWAY_MMD_LEDCH_FBF_F16HZ 0x00C0
62/* LED Configuration */
63#define XWAY_MMD_LEDCL 0x01E1
64/* Complex Blinking Configuration */
65#define XWAY_MMD_LEDCH_CBLINK_NONE 0x0000
66#define XWAY_MMD_LEDCH_CBLINK_LINK 0x0001
67#define XWAY_MMD_LEDCH_CBLINK_PDOWN 0x0002
68#define XWAY_MMD_LEDCH_CBLINK_EEE 0x0003
69#define XWAY_MMD_LEDCH_CBLINK_ANEG 0x0004
70#define XWAY_MMD_LEDCH_CBLINK_ABIST 0x0005
71#define XWAY_MMD_LEDCH_CBLINK_CDIAG 0x0006
72#define XWAY_MMD_LEDCH_CBLINK_TEST 0x0007
73/* Complex SCAN Configuration */
74#define XWAY_MMD_LEDCH_SCAN_NONE 0x0000
75#define XWAY_MMD_LEDCH_SCAN_LINK 0x0010
76#define XWAY_MMD_LEDCH_SCAN_PDOWN 0x0020
77#define XWAY_MMD_LEDCH_SCAN_EEE 0x0030
78#define XWAY_MMD_LEDCH_SCAN_ANEG 0x0040
79#define XWAY_MMD_LEDCH_SCAN_ABIST 0x0050
80#define XWAY_MMD_LEDCH_SCAN_CDIAG 0x0060
81#define XWAY_MMD_LEDCH_SCAN_TEST 0x0070
82/* Configuration for LED Pin x */
83#define XWAY_MMD_LED0H 0x01E2
84/* Fast Blinking Configuration */
85#define XWAY_MMD_LEDxH_BLINKF_MASK 0x000F
86#define XWAY_MMD_LEDxH_BLINKF_NONE 0x0000
87#define XWAY_MMD_LEDxH_BLINKF_LINK10 0x0001
88#define XWAY_MMD_LEDxH_BLINKF_LINK100 0x0002
89#define XWAY_MMD_LEDxH_BLINKF_LINK10X 0x0003
90#define XWAY_MMD_LEDxH_BLINKF_LINK1000 0x0004
91#define XWAY_MMD_LEDxH_BLINKF_LINK10_0 0x0005
92#define XWAY_MMD_LEDxH_BLINKF_LINK100X 0x0006
93#define XWAY_MMD_LEDxH_BLINKF_LINK10XX 0x0007
94#define XWAY_MMD_LEDxH_BLINKF_PDOWN 0x0008
95#define XWAY_MMD_LEDxH_BLINKF_EEE 0x0009
96#define XWAY_MMD_LEDxH_BLINKF_ANEG 0x000A
97#define XWAY_MMD_LEDxH_BLINKF_ABIST 0x000B
98#define XWAY_MMD_LEDxH_BLINKF_CDIAG 0x000C
99/* Constant On Configuration */
100#define XWAY_MMD_LEDxH_CON_MASK 0x00F0
101#define XWAY_MMD_LEDxH_CON_NONE 0x0000
102#define XWAY_MMD_LEDxH_CON_LINK10 0x0010
103#define XWAY_MMD_LEDxH_CON_LINK100 0x0020
104#define XWAY_MMD_LEDxH_CON_LINK10X 0x0030
105#define XWAY_MMD_LEDxH_CON_LINK1000 0x0040
106#define XWAY_MMD_LEDxH_CON_LINK10_0 0x0050
107#define XWAY_MMD_LEDxH_CON_LINK100X 0x0060
108#define XWAY_MMD_LEDxH_CON_LINK10XX 0x0070
109#define XWAY_MMD_LEDxH_CON_PDOWN 0x0080
110#define XWAY_MMD_LEDxH_CON_EEE 0x0090
111#define XWAY_MMD_LEDxH_CON_ANEG 0x00A0
112#define XWAY_MMD_LEDxH_CON_ABIST 0x00B0
113#define XWAY_MMD_LEDxH_CON_CDIAG 0x00C0
114#define XWAY_MMD_LEDxH_CON_COPPER 0x00D0
115#define XWAY_MMD_LEDxH_CON_FIBER 0x00E0
116/* Configuration for LED Pin x */
117#define XWAY_MMD_LED0L 0x01E3
118/* Pulsing Configuration */
119#define XWAY_MMD_LEDxL_PULSE_MASK 0x000F
120#define XWAY_MMD_LEDxL_PULSE_NONE 0x0000
121#define XWAY_MMD_LEDxL_PULSE_TXACT 0x0001
122#define XWAY_MMD_LEDxL_PULSE_RXACT 0x0002
123#define XWAY_MMD_LEDxL_PULSE_COL 0x0004
124/* Slow Blinking Configuration */
125#define XWAY_MMD_LEDxL_BLINKS_MASK 0x00F0
126#define XWAY_MMD_LEDxL_BLINKS_NONE 0x0000
127#define XWAY_MMD_LEDxL_BLINKS_LINK10 0x0010
128#define XWAY_MMD_LEDxL_BLINKS_LINK100 0x0020
129#define XWAY_MMD_LEDxL_BLINKS_LINK10X 0x0030
130#define XWAY_MMD_LEDxL_BLINKS_LINK1000 0x0040
131#define XWAY_MMD_LEDxL_BLINKS_LINK10_0 0x0050
132#define XWAY_MMD_LEDxL_BLINKS_LINK100X 0x0060
133#define XWAY_MMD_LEDxL_BLINKS_LINK10XX 0x0070
134#define XWAY_MMD_LEDxL_BLINKS_PDOWN 0x0080
135#define XWAY_MMD_LEDxL_BLINKS_EEE 0x0090
136#define XWAY_MMD_LEDxL_BLINKS_ANEG 0x00A0
137#define XWAY_MMD_LEDxL_BLINKS_ABIST 0x00B0
138#define XWAY_MMD_LEDxL_BLINKS_CDIAG 0x00C0
139#define XWAY_MMD_LED1H 0x01E4
140#define XWAY_MMD_LED1L 0x01E5
141#define XWAY_MMD_LED2H 0x01E6
142#define XWAY_MMD_LED2L 0x01E7
143#define XWAY_MMD_LED3H 0x01E8
144#define XWAY_MMD_LED3L 0x01E9
145
146#define PHY_ID_PHY11G_1_3 0x030260D1
147#define PHY_ID_PHY22F_1_3 0x030260E1
148#define PHY_ID_PHY11G_1_4 0xD565A400
149#define PHY_ID_PHY22F_1_4 0xD565A410
150#define PHY_ID_PHY11G_1_5 0xD565A401
151#define PHY_ID_PHY22F_1_5 0xD565A411
152#define PHY_ID_PHY11G_VR9 0xD565A409
153#define PHY_ID_PHY22F_VR9 0xD565A419
154
155static int xway_gphy_config_init(struct phy_device *phydev)
156{
157 int err;
158 u32 ledxh;
159 u32 ledxl;
160
161 /* Mask all interrupts */
162 err = phy_write(phydev, XWAY_MDIO_IMASK, 0);
163 if (err)
164 return err;
165
166 /* Clear all pending interrupts */
167 phy_read(phydev, XWAY_MDIO_ISTAT);
168
169 phy_write_mmd_indirect(phydev, XWAY_MMD_LEDCH, MDIO_MMD_VEND2,
170 XWAY_MMD_LEDCH_NACS_NONE |
171 XWAY_MMD_LEDCH_SBF_F02HZ |
172 XWAY_MMD_LEDCH_FBF_F16HZ);
173 phy_write_mmd_indirect(phydev, XWAY_MMD_LEDCL, MDIO_MMD_VEND2,
174 XWAY_MMD_LEDCH_CBLINK_NONE |
175 XWAY_MMD_LEDCH_SCAN_NONE);
176
177 /**
178 * In most cases only one LED is connected to this phy, so
179 * configure them all to constant on and pulse mode. LED3 is
180 * only available in some packages, leave it in its reset
181 * configuration.
182 */
183 ledxh = XWAY_MMD_LEDxH_BLINKF_NONE | XWAY_MMD_LEDxH_CON_LINK10XX;
184 ledxl = XWAY_MMD_LEDxL_PULSE_TXACT | XWAY_MMD_LEDxL_PULSE_RXACT |
185 XWAY_MMD_LEDxL_BLINKS_NONE;
186 phy_write_mmd_indirect(phydev, XWAY_MMD_LED0H, MDIO_MMD_VEND2, ledxh);
187 phy_write_mmd_indirect(phydev, XWAY_MMD_LED0L, MDIO_MMD_VEND2, ledxl);
188 phy_write_mmd_indirect(phydev, XWAY_MMD_LED1H, MDIO_MMD_VEND2, ledxh);
189 phy_write_mmd_indirect(phydev, XWAY_MMD_LED1L, MDIO_MMD_VEND2, ledxl);
190 phy_write_mmd_indirect(phydev, XWAY_MMD_LED2H, MDIO_MMD_VEND2, ledxh);
191 phy_write_mmd_indirect(phydev, XWAY_MMD_LED2L, MDIO_MMD_VEND2, ledxl);
192
193 return 0;
194}
195
196static int xway_gphy14_config_aneg(struct phy_device *phydev)
197{
198 int reg, err;
199
200 /* Advertise as multi-port device, see IEEE802.3-2002 40.5.1.1 */
201 /* This is a workaround for an errata in rev < 1.5 devices */
202 reg = phy_read(phydev, MII_CTRL1000);
203 reg |= ADVERTISED_MPD;
204 err = phy_write(phydev, MII_CTRL1000, reg);
205 if (err)
206 return err;
207
208 return genphy_config_aneg(phydev);
209}
210
211static int xway_gphy_ack_interrupt(struct phy_device *phydev)
212{
213 int reg;
214
215 reg = phy_read(phydev, XWAY_MDIO_ISTAT);
216 return (reg < 0) ? reg : 0;
217}
218
219static int xway_gphy_did_interrupt(struct phy_device *phydev)
220{
221 int reg;
222
223 reg = phy_read(phydev, XWAY_MDIO_ISTAT);
224 return reg & XWAY_MDIO_INIT_MASK;
225}
226
227static int xway_gphy_config_intr(struct phy_device *phydev)
228{
229 u16 mask = 0;
230
231 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
232 mask = XWAY_MDIO_INIT_MASK;
233
234 return phy_write(phydev, XWAY_MDIO_IMASK, mask);
235}
236
237static struct phy_driver xway_gphy[] = {
238 {
239 .phy_id = PHY_ID_PHY11G_1_3,
240 .phy_id_mask = 0xffffffff,
241 .name = "Intel XWAY PHY11G (PEF 7071/PEF 7072) v1.3",
242 .features = PHY_GBIT_FEATURES,
243 .flags = PHY_HAS_INTERRUPT,
244 .config_init = xway_gphy_config_init,
245 .config_aneg = xway_gphy14_config_aneg,
246 .read_status = genphy_read_status,
247 .ack_interrupt = xway_gphy_ack_interrupt,
248 .did_interrupt = xway_gphy_did_interrupt,
249 .config_intr = xway_gphy_config_intr,
250 .suspend = genphy_suspend,
251 .resume = genphy_resume,
252 }, {
253 .phy_id = PHY_ID_PHY22F_1_3,
254 .phy_id_mask = 0xffffffff,
255 .name = "Intel XWAY PHY22F (PEF 7061) v1.3",
256 .features = PHY_BASIC_FEATURES,
257 .flags = PHY_HAS_INTERRUPT,
258 .config_init = xway_gphy_config_init,
259 .config_aneg = xway_gphy14_config_aneg,
260 .read_status = genphy_read_status,
261 .ack_interrupt = xway_gphy_ack_interrupt,
262 .did_interrupt = xway_gphy_did_interrupt,
263 .config_intr = xway_gphy_config_intr,
264 .suspend = genphy_suspend,
265 .resume = genphy_resume,
266 }, {
267 .phy_id = PHY_ID_PHY11G_1_4,
268 .phy_id_mask = 0xffffffff,
269 .name = "Intel XWAY PHY11G (PEF 7071/PEF 7072) v1.4",
270 .features = PHY_GBIT_FEATURES,
271 .flags = PHY_HAS_INTERRUPT,
272 .config_init = xway_gphy_config_init,
273 .config_aneg = xway_gphy14_config_aneg,
274 .read_status = genphy_read_status,
275 .ack_interrupt = xway_gphy_ack_interrupt,
276 .did_interrupt = xway_gphy_did_interrupt,
277 .config_intr = xway_gphy_config_intr,
278 .suspend = genphy_suspend,
279 .resume = genphy_resume,
280 }, {
281 .phy_id = PHY_ID_PHY22F_1_4,
282 .phy_id_mask = 0xffffffff,
283 .name = "Intel XWAY PHY22F (PEF 7061) v1.4",
284 .features = PHY_BASIC_FEATURES,
285 .flags = PHY_HAS_INTERRUPT,
286 .config_init = xway_gphy_config_init,
287 .config_aneg = xway_gphy14_config_aneg,
288 .read_status = genphy_read_status,
289 .ack_interrupt = xway_gphy_ack_interrupt,
290 .did_interrupt = xway_gphy_did_interrupt,
291 .config_intr = xway_gphy_config_intr,
292 .suspend = genphy_suspend,
293 .resume = genphy_resume,
294 }, {
295 .phy_id = PHY_ID_PHY11G_1_5,
296 .phy_id_mask = 0xffffffff,
297 .name = "Intel XWAY PHY11G (PEF 7071/PEF 7072) v1.5 / v1.6",
298 .features = PHY_GBIT_FEATURES,
299 .flags = PHY_HAS_INTERRUPT,
300 .config_init = xway_gphy_config_init,
301 .config_aneg = genphy_config_aneg,
302 .read_status = genphy_read_status,
303 .ack_interrupt = xway_gphy_ack_interrupt,
304 .did_interrupt = xway_gphy_did_interrupt,
305 .config_intr = xway_gphy_config_intr,
306 .suspend = genphy_suspend,
307 .resume = genphy_resume,
308 }, {
309 .phy_id = PHY_ID_PHY22F_1_5,
310 .phy_id_mask = 0xffffffff,
311 .name = "Intel XWAY PHY22F (PEF 7061) v1.5 / v1.6",
312 .features = PHY_BASIC_FEATURES,
313 .flags = PHY_HAS_INTERRUPT,
314 .config_init = xway_gphy_config_init,
315 .config_aneg = genphy_config_aneg,
316 .read_status = genphy_read_status,
317 .ack_interrupt = xway_gphy_ack_interrupt,
318 .did_interrupt = xway_gphy_did_interrupt,
319 .config_intr = xway_gphy_config_intr,
320 .suspend = genphy_suspend,
321 .resume = genphy_resume,
322 }, {
323 .phy_id = PHY_ID_PHY11G_VR9,
324 .phy_id_mask = 0xffffffff,
325 .name = "Intel XWAY PHY11G (xRX integrated)",
326 .features = PHY_GBIT_FEATURES,
327 .flags = PHY_HAS_INTERRUPT,
328 .config_init = xway_gphy_config_init,
329 .config_aneg = genphy_config_aneg,
330 .read_status = genphy_read_status,
331 .ack_interrupt = xway_gphy_ack_interrupt,
332 .did_interrupt = xway_gphy_did_interrupt,
333 .config_intr = xway_gphy_config_intr,
334 .suspend = genphy_suspend,
335 .resume = genphy_resume,
336 }, {
337 .phy_id = PHY_ID_PHY22F_VR9,
338 .phy_id_mask = 0xffffffff,
339 .name = "Intel XWAY PHY22F (xRX integrated)",
340 .features = PHY_BASIC_FEATURES,
341 .flags = PHY_HAS_INTERRUPT,
342 .config_init = xway_gphy_config_init,
343 .config_aneg = genphy_config_aneg,
344 .read_status = genphy_read_status,
345 .ack_interrupt = xway_gphy_ack_interrupt,
346 .did_interrupt = xway_gphy_did_interrupt,
347 .config_intr = xway_gphy_config_intr,
348 .suspend = genphy_suspend,
349 .resume = genphy_resume,
350 },
351};
352module_phy_driver(xway_gphy);
353
354static struct mdio_device_id __maybe_unused xway_gphy_tbl[] = {
355 { PHY_ID_PHY11G_1_3, 0xffffffff },
356 { PHY_ID_PHY22F_1_3, 0xffffffff },
357 { PHY_ID_PHY11G_1_4, 0xffffffff },
358 { PHY_ID_PHY22F_1_4, 0xffffffff },
359 { PHY_ID_PHY11G_1_5, 0xffffffff },
360 { PHY_ID_PHY22F_1_5, 0xffffffff },
361 { PHY_ID_PHY11G_VR9, 0xffffffff },
362 { PHY_ID_PHY22F_VR9, 0xffffffff },
363 { }
364};
365MODULE_DEVICE_TABLE(mdio, xway_gphy_tbl);
366
367MODULE_DESCRIPTION("Intel XWAY PHY driver");
368MODULE_LICENSE("GPL");