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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / phy / broadcom.c
blobe8be47d6d7d0c31a9c3d1126d18be41a33217180
1 /*
2 * drivers/net/phy/broadcom.c
3 *
4 * Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
5 * transceivers.
6 *
7 * Copyright (c) 2006 Maciej W. Rozycki
8 *
9 * Inspired by code written by Amy Fong.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16
17 #include <linux/module.h>
18 #include <linux/phy.h>
19 #include <linux/brcmphy.h>
20
21
22 #define BRCM_PHY_MODEL(phydev) \
23 ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
24
25 #define BRCM_PHY_REV(phydev) \
26 ((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
27
28
29 #define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */
30 #define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */
31 #define MII_BCM54XX_ECR_IF 0x0800 /* Interrupt force */
32
33 #define MII_BCM54XX_ESR 0x11 /* BCM54xx extended status register */
34 #define MII_BCM54XX_ESR_IS 0x1000 /* Interrupt status */
35
36 #define MII_BCM54XX_EXP_DATA 0x15 /* Expansion register data */
37 #define MII_BCM54XX_EXP_SEL 0x17 /* Expansion register select */
38 #define MII_BCM54XX_EXP_SEL_SSD 0x0e00 /* Secondary SerDes select */
39 #define MII_BCM54XX_EXP_SEL_ER 0x0f00 /* Expansion register select */
40
41 #define MII_BCM54XX_AUX_CTL 0x18 /* Auxiliary control register */
42 #define MII_BCM54XX_ISR 0x1a /* BCM54xx interrupt status register */
43 #define MII_BCM54XX_IMR 0x1b /* BCM54xx interrupt mask register */
44 #define MII_BCM54XX_INT_CRCERR 0x0001 /* CRC error */
45 #define MII_BCM54XX_INT_LINK 0x0002 /* Link status changed */
46 #define MII_BCM54XX_INT_SPEED 0x0004 /* Link speed change */
47 #define MII_BCM54XX_INT_DUPLEX 0x0008 /* Duplex mode changed */
48 #define MII_BCM54XX_INT_LRS 0x0010 /* Local receiver status changed */
49 #define MII_BCM54XX_INT_RRS 0x0020 /* Remote receiver status changed */
50 #define MII_BCM54XX_INT_SSERR 0x0040 /* Scrambler synchronization error */
51 #define MII_BCM54XX_INT_UHCD 0x0080 /* Unsupported HCD negotiated */
52 #define MII_BCM54XX_INT_NHCD 0x0100 /* No HCD */
53 #define MII_BCM54XX_INT_NHCDL 0x0200 /* No HCD link */
54 #define MII_BCM54XX_INT_ANPR 0x0400 /* Auto-negotiation page received */
55 #define MII_BCM54XX_INT_LC 0x0800 /* All counters below 128 */
56 #define MII_BCM54XX_INT_HC 0x1000 /* Counter above 32768 */
57 #define MII_BCM54XX_INT_MDIX 0x2000 /* MDIX status change */
58 #define MII_BCM54XX_INT_PSERR 0x4000 /* Pair swap error */
59
60 #define MII_BCM54XX_SHD 0x1c /* 0x1c shadow registers */
61 #define MII_BCM54XX_SHD_WRITE 0x8000
62 #define MII_BCM54XX_SHD_VAL(x) ((x & 0x1f) << 10)
63 #define MII_BCM54XX_SHD_DATA(x) ((x & 0x3ff) << 0)
64
65 /*
66 * AUXILIARY CONTROL SHADOW ACCESS REGISTERS. (PHY REG 0x18)
67 */
68 #define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL 0x0000
69 #define MII_BCM54XX_AUXCTL_ACTL_TX_6DB 0x0400
70 #define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA 0x0800
71
72 #define MII_BCM54XX_AUXCTL_MISC_WREN 0x8000
73 #define MII_BCM54XX_AUXCTL_MISC_FORCE_AMDIX 0x0200
74 #define MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC 0x7000
75 #define MII_BCM54XX_AUXCTL_SHDWSEL_MISC 0x0007
76
77 #define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL 0x0000
78
79
80 /*
81 * Broadcom LED source encodings. These are used in BCM5461, BCM5481,
82 * BCM5482, and possibly some others.
83 */
84 #define BCM_LED_SRC_LINKSPD1 0x0
85 #define BCM_LED_SRC_LINKSPD2 0x1
86 #define BCM_LED_SRC_XMITLED 0x2
87 #define BCM_LED_SRC_ACTIVITYLED 0x3
88 #define BCM_LED_SRC_FDXLED 0x4
89 #define BCM_LED_SRC_SLAVE 0x5
90 #define BCM_LED_SRC_INTR 0x6
91 #define BCM_LED_SRC_QUALITY 0x7
92 #define BCM_LED_SRC_RCVLED 0x8
93 #define BCM_LED_SRC_MULTICOLOR1 0xa
94 #define BCM_LED_SRC_OPENSHORT 0xb
95 #define BCM_LED_SRC_OFF 0xe /* Tied high */
96 #define BCM_LED_SRC_ON 0xf /* Tied low */
97
98
99 /*
100 * BCM5482: Shadow registers
101 * Shadow values go into bits [14:10] of register 0x1c to select a shadow
102 * register to access.
103 */
104 /* 00101: Spare Control Register 3 */
105 #define BCM54XX_SHD_SCR3 0x05
106 #define BCM54XX_SHD_SCR3_DEF_CLK125 0x0001
107 #define BCM54XX_SHD_SCR3_DLLAPD_DIS 0x0002
108 #define BCM54XX_SHD_SCR3_TRDDAPD 0x0004
109
110 /* 01010: Auto Power-Down */
111 #define BCM54XX_SHD_APD 0x0a
112 #define BCM54XX_SHD_APD_EN 0x0020
113
114 #define BCM5482_SHD_LEDS1 0x0d /* 01101: LED Selector 1 */
115 /* LED3 / ~LINKSPD[2] selector */
116 #define BCM5482_SHD_LEDS1_LED3(src) ((src & 0xf) << 4)
117 /* LED1 / ~LINKSPD[1] selector */
118 #define BCM5482_SHD_LEDS1_LED1(src) ((src & 0xf) << 0)
119 #define BCM54XX_SHD_RGMII_MODE 0x0b /* 01011: RGMII Mode Selector */
120 #define BCM5482_SHD_SSD 0x14 /* 10100: Secondary SerDes control */
121 #define BCM5482_SHD_SSD_LEDM 0x0008 /* SSD LED Mode enable */
122 #define BCM5482_SHD_SSD_EN 0x0001 /* SSD enable */
123 #define BCM5482_SHD_MODE 0x1f /* 11111: Mode Control Register */
124 #define BCM5482_SHD_MODE_1000BX 0x0001 /* Enable 1000BASE-X registers */
125
126
127 /*
128 * EXPANSION SHADOW ACCESS REGISTERS. (PHY REG 0x15, 0x16, and 0x17)
129 */
130 #define MII_BCM54XX_EXP_AADJ1CH0 0x001f
131 #define MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN 0x0200
132 #define MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF 0x0100
133 #define MII_BCM54XX_EXP_AADJ1CH3 0x601f
134 #define MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ 0x0002
135 #define MII_BCM54XX_EXP_EXP08 0x0F08
136 #define MII_BCM54XX_EXP_EXP08_RJCT_2MHZ 0x0001
137 #define MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE 0x0200
138 #define MII_BCM54XX_EXP_EXP75 0x0f75
139 #define MII_BCM54XX_EXP_EXP75_VDACCTRL 0x003c
140 #define MII_BCM54XX_EXP_EXP75_CM_OSC 0x0001
141 #define MII_BCM54XX_EXP_EXP96 0x0f96
142 #define MII_BCM54XX_EXP_EXP96_MYST 0x0010
143 #define MII_BCM54XX_EXP_EXP97 0x0f97
144 #define MII_BCM54XX_EXP_EXP97_MYST 0x0c0c
145
146 /*
147 * BCM5482: Secondary SerDes registers
148 */
149 #define BCM5482_SSD_1000BX_CTL 0x00 /* 1000BASE-X Control */
150 #define BCM5482_SSD_1000BX_CTL_PWRDOWN 0x0800 /* Power-down SSD */
151 #define BCM5482_SSD_SGMII_SLAVE 0x15 /* SGMII Slave Register */
152 #define BCM5482_SSD_SGMII_SLAVE_EN 0x0002 /* Slave mode enable */
153 #define BCM5482_SSD_SGMII_SLAVE_AD 0x0001 /* Slave auto-detection */
154
155
156 /*****************************************************************************/
157 /* Fast Ethernet Transceiver definitions. */
158 /*****************************************************************************/
159
160 #define MII_BRCM_FET_INTREG 0x1a /* Interrupt register */
161 #define MII_BRCM_FET_IR_MASK 0x0100 /* Mask all interrupts */
162 #define MII_BRCM_FET_IR_LINK_EN 0x0200 /* Link status change enable */
163 #define MII_BRCM_FET_IR_SPEED_EN 0x0400 /* Link speed change enable */
164 #define MII_BRCM_FET_IR_DUPLEX_EN 0x0800 /* Duplex mode change enable */
165 #define MII_BRCM_FET_IR_ENABLE 0x4000 /* Interrupt enable */
166
167 #define MII_BRCM_FET_BRCMTEST 0x1f /* Brcm test register */
168 #define MII_BRCM_FET_BT_SRE 0x0080 /* Shadow register enable */
169
170
171 /*** Shadow register definitions ***/
172
173 #define MII_BRCM_FET_SHDW_MISCCTRL 0x10 /* Shadow misc ctrl */
174 #define MII_BRCM_FET_SHDW_MC_FAME 0x4000 /* Force Auto MDIX enable */
175
176 #define MII_BRCM_FET_SHDW_AUXMODE4 0x1a /* Auxiliary mode 4 */
177 #define MII_BRCM_FET_SHDW_AM4_LED_MASK 0x0003
178 #define MII_BRCM_FET_SHDW_AM4_LED_MODE1 0x0001
179
180 #define MII_BRCM_FET_SHDW_AUXSTAT2 0x1b /* Auxiliary status 2 */
181 #define MII_BRCM_FET_SHDW_AS2_APDE 0x0020 /* Auto power down enable */
182
183
184 MODULE_DESCRIPTION("Broadcom PHY driver");
185 MODULE_AUTHOR("Maciej W. Rozycki");
186 MODULE_LICENSE("GPL");
187
188 /*
189 * Indirect register access functions for the 1000BASE-T/100BASE-TX/10BASE-T
190 * 0x1c shadow registers.
191 */
192 static int bcm54xx_shadow_read(struct phy_device *phydev, u16 shadow)
193 {
194 phy_write(phydev, MII_BCM54XX_SHD, MII_BCM54XX_SHD_VAL(shadow));
195 return MII_BCM54XX_SHD_DATA(phy_read(phydev, MII_BCM54XX_SHD));
196 }
197
198 static int bcm54xx_shadow_write(struct phy_device *phydev, u16 shadow, u16 val)
199 {
200 return phy_write(phydev, MII_BCM54XX_SHD,
201 MII_BCM54XX_SHD_WRITE |
202 MII_BCM54XX_SHD_VAL(shadow) |
203 MII_BCM54XX_SHD_DATA(val));
204 }
205
206 /* Indirect register access functions for the Expansion Registers */
207 static int bcm54xx_exp_read(struct phy_device *phydev, u16 regnum)
208 {
209 int val;
210
211 val = phy_write(phydev, MII_BCM54XX_EXP_SEL, regnum);
212 if (val < 0)
213 return val;
214
215 val = phy_read(phydev, MII_BCM54XX_EXP_DATA);
216
217 /* Restore default value. It's O.K. if this write fails. */
218 phy_write(phydev, MII_BCM54XX_EXP_SEL, 0);
219
220 return val;
221 }
222
223 static int bcm54xx_exp_write(struct phy_device *phydev, u16 regnum, u16 val)
224 {
225 int ret;
226
227 ret = phy_write(phydev, MII_BCM54XX_EXP_SEL, regnum);
228 if (ret < 0)
229 return ret;
230
231 ret = phy_write(phydev, MII_BCM54XX_EXP_DATA, val);
232
233 /* Restore default value. It's O.K. if this write fails. */
234 phy_write(phydev, MII_BCM54XX_EXP_SEL, 0);
235
236 return ret;
237 }
238
239 static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
240 {
241 return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
242 }
243
244 /* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
245 static int bcm50610_a0_workaround(struct phy_device *phydev)
246 {
247 int err;
248
249 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_AADJ1CH0,
250 MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN |
251 MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF);
252 if (err < 0)
253 return err;
254
255 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_AADJ1CH3,
256 MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ);
257 if (err < 0)
258 return err;
259
260 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75,
261 MII_BCM54XX_EXP_EXP75_VDACCTRL);
262 if (err < 0)
263 return err;
264
265 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP96,
266 MII_BCM54XX_EXP_EXP96_MYST);
267 if (err < 0)
268 return err;
269
270 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP97,
271 MII_BCM54XX_EXP_EXP97_MYST);
272
273 return err;
274 }
275
276 static int bcm54xx_phydsp_config(struct phy_device *phydev)
277 {
278 int err, err2;
279
280 /* Enable the SMDSP clock */
281 err = bcm54xx_auxctl_write(phydev,
282 MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
283 MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA |
284 MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
285 if (err < 0)
286 return err;
287
288 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
289 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) {
290 /* Clear bit 9 to fix a phy interop issue. */
291 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP08,
292 MII_BCM54XX_EXP_EXP08_RJCT_2MHZ);
293 if (err < 0)
294 goto error;
295
296 if (phydev->drv->phy_id == PHY_ID_BCM50610) {
297 err = bcm50610_a0_workaround(phydev);
298 if (err < 0)
299 goto error;
300 }
301 }
302
303 if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) {
304 int val;
305
306 val = bcm54xx_exp_read(phydev, MII_BCM54XX_EXP_EXP75);
307 if (val < 0)
308 goto error;
309
310 val |= MII_BCM54XX_EXP_EXP75_CM_OSC;
311 err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75, val);
312 }
313
314 error:
315 /* Disable the SMDSP clock */
316 err2 = bcm54xx_auxctl_write(phydev,
317 MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
318 MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
319
320 /* Return the first error reported. */
321 return err ? err : err2;
322 }
323
324 static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
325 {
326 u32 orig;
327 int val;
328 bool clk125en = true;
329
330 /* Abort if we are using an untested phy. */
331 if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 &&
332 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 &&
333 BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M)
334 return;
335
336 val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_SCR3);
337 if (val < 0)
338 return;
339
340 orig = val;
341
342 if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
343 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
344 BRCM_PHY_REV(phydev) >= 0x3) {
345 /*
346 * Here, bit 0 _disables_ CLK125 when set.
347 * This bit is set by default.
348 */
349 clk125en = false;
350 } else {
351 if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
352 /* Here, bit 0 _enables_ CLK125 when set */
353 val &= ~BCM54XX_SHD_SCR3_DEF_CLK125;
354 clk125en = false;
355 }
356 }
357
358 if (clk125en == false ||
359 (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
360 val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
361 else
362 val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
363
364 if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY)
365 val |= BCM54XX_SHD_SCR3_TRDDAPD;
366
367 if (orig != val)
368 bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val);
369
370 val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_APD);
371 if (val < 0)
372 return;
373
374 orig = val;
375
376 if (clk125en == false ||
377 (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
378 val |= BCM54XX_SHD_APD_EN;
379 else
380 val &= ~BCM54XX_SHD_APD_EN;
381
382 if (orig != val)
383 bcm54xx_shadow_write(phydev, BCM54XX_SHD_APD, val);
384 }
385
386 static int bcm54xx_config_init(struct phy_device *phydev)
387 {
388 int reg, err;
389
390 reg = phy_read(phydev, MII_BCM54XX_ECR);
391 if (reg < 0)
392 return reg;
393
394 /* Mask interrupts globally. */
395 reg |= MII_BCM54XX_ECR_IM;
396 err = phy_write(phydev, MII_BCM54XX_ECR, reg);
397 if (err < 0)
398 return err;
399
400 /* Unmask events we are interested in. */
401 reg = ~(MII_BCM54XX_INT_DUPLEX |
402 MII_BCM54XX_INT_SPEED |
403 MII_BCM54XX_INT_LINK);
404 err = phy_write(phydev, MII_BCM54XX_IMR, reg);
405 if (err < 0)
406 return err;
407
408 if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
409 BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
410 (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
411 bcm54xx_shadow_write(phydev, BCM54XX_SHD_RGMII_MODE, 0);
412
413 if ((phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) ||
414 (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) ||
415 (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
416 bcm54xx_adjust_rxrefclk(phydev);
417
418 bcm54xx_phydsp_config(phydev);
419
420 return 0;
421 }
422
423 static int bcm5482_config_init(struct phy_device *phydev)
424 {
425 int err, reg;
426
427 err = bcm54xx_config_init(phydev);
428
429 if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {
430 /*
431 * Enable secondary SerDes and its use as an LED source
432 */
433 reg = bcm54xx_shadow_read(phydev, BCM5482_SHD_SSD);
434 bcm54xx_shadow_write(phydev, BCM5482_SHD_SSD,
435 reg |
436 BCM5482_SHD_SSD_LEDM |
437 BCM5482_SHD_SSD_EN);
438
439 /*
440 * Enable SGMII slave mode and auto-detection
441 */
442 reg = BCM5482_SSD_SGMII_SLAVE | MII_BCM54XX_EXP_SEL_SSD;
443 err = bcm54xx_exp_read(phydev, reg);
444 if (err < 0)
445 return err;
446 err = bcm54xx_exp_write(phydev, reg, err |
447 BCM5482_SSD_SGMII_SLAVE_EN |
448 BCM5482_SSD_SGMII_SLAVE_AD);
449 if (err < 0)
450 return err;
451
452 /*
453 * Disable secondary SerDes powerdown
454 */
455 reg = BCM5482_SSD_1000BX_CTL | MII_BCM54XX_EXP_SEL_SSD;
456 err = bcm54xx_exp_read(phydev, reg);
457 if (err < 0)
458 return err;
459 err = bcm54xx_exp_write(phydev, reg,
460 err & ~BCM5482_SSD_1000BX_CTL_PWRDOWN);
461 if (err < 0)
462 return err;
463
464 /*
465 * Select 1000BASE-X register set (primary SerDes)
466 */
467 reg = bcm54xx_shadow_read(phydev, BCM5482_SHD_MODE);
468 bcm54xx_shadow_write(phydev, BCM5482_SHD_MODE,
469 reg | BCM5482_SHD_MODE_1000BX);
470
471 /*
472 * LED1=ACTIVITYLED, LED3=LINKSPD[2]
473 * (Use LED1 as secondary SerDes ACTIVITY LED)
474 */
475 bcm54xx_shadow_write(phydev, BCM5482_SHD_LEDS1,
476 BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_ACTIVITYLED) |
477 BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_LINKSPD2));
478
479 /*
480 * Auto-negotiation doesn't seem to work quite right
481 * in this mode, so we disable it and force it to the
482 * right speed/duplex setting. Only 'link status'
483 * is important.
484 */
485 phydev->autoneg = AUTONEG_DISABLE;
486 phydev->speed = SPEED_1000;
487 phydev->duplex = DUPLEX_FULL;
488 }
489
490 return err;
491 }
492
493 static int bcm5482_read_status(struct phy_device *phydev)
494 {
495 int err;
496
497 err = genphy_read_status(phydev);
498
499 if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) {
500 /*
501 * Only link status matters for 1000Base-X mode, so force
502 * 1000 Mbit/s full-duplex status
503 */
504 if (phydev->link) {
505 phydev->speed = SPEED_1000;
506 phydev->duplex = DUPLEX_FULL;
507 }
508 }
509
510 return err;
511 }
512
513 static int bcm54xx_ack_interrupt(struct phy_device *phydev)
514 {
515 int reg;
516
517 /* Clear pending interrupts. */
518 reg = phy_read(phydev, MII_BCM54XX_ISR);
519 if (reg < 0)
520 return reg;
521
522 return 0;
523 }
524
525 static int bcm54xx_config_intr(struct phy_device *phydev)
526 {
527 int reg, err;
528
529 reg = phy_read(phydev, MII_BCM54XX_ECR);
530 if (reg < 0)
531 return reg;
532
533 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
534 reg &= ~MII_BCM54XX_ECR_IM;
535 else
536 reg |= MII_BCM54XX_ECR_IM;
537
538 err = phy_write(phydev, MII_BCM54XX_ECR, reg);
539 return err;
540 }
541
542 static int bcm5481_config_aneg(struct phy_device *phydev)
543 {
544 int ret;
545
546 /* Aneg firsly. */
547 ret = genphy_config_aneg(phydev);
548
549 /* Then we can set up the delay. */
550 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
551 u16 reg;
552
553 /*
554 * There is no BCM5481 specification available, so down
555 * here is everything we know about "register 0x18". This
556 * at least helps BCM5481 to successfully receive packets
557 * on MPC8360E-RDK board. Peter Barada <peterb@logicpd.com>
558 * says: "This sets delay between the RXD and RXC signals
559 * instead of using trace lengths to achieve timing".
560 */
561
562 /* Set RDX clk delay. */
563 reg = 0x7 | (0x7 << 12);
564 phy_write(phydev, 0x18, reg);
565
566 reg = phy_read(phydev, 0x18);
567 /* Set RDX-RXC skew. */
568 reg |= (1 << 8);
569 /* Write bits 14:0. */
570 reg |= (1 << 15);
571 phy_write(phydev, 0x18, reg);
572 }
573
574 return ret;
575 }
576
577 static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
578 {
579 int val;
580
581 val = phy_read(phydev, reg);
582 if (val < 0)
583 return val;
584
585 return phy_write(phydev, reg, val | set);
586 }
587
588 static int brcm_fet_config_init(struct phy_device *phydev)
589 {
590 int reg, err, err2, brcmtest;
591
592 /* Reset the PHY to bring it to a known state. */
593 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
594 if (err < 0)
595 return err;
596
597 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
598 if (reg < 0)
599 return reg;
600
601 /* Unmask events we are interested in and mask interrupts globally. */
602 reg = MII_BRCM_FET_IR_DUPLEX_EN |
603 MII_BRCM_FET_IR_SPEED_EN |
604 MII_BRCM_FET_IR_LINK_EN |
605 MII_BRCM_FET_IR_ENABLE |
606 MII_BRCM_FET_IR_MASK;
607
608 err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
609 if (err < 0)
610 return err;
611
612 /* Enable shadow register access */
613 brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
614 if (brcmtest < 0)
615 return brcmtest;
616
617 reg = brcmtest | MII_BRCM_FET_BT_SRE;
618
619 err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg);
620 if (err < 0)
621 return err;
622
623 /* Set the LED mode */
624 reg = phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4);
625 if (reg < 0) {
626 err = reg;
627 goto done;
628 }
629
630 reg &= ~MII_BRCM_FET_SHDW_AM4_LED_MASK;
631 reg |= MII_BRCM_FET_SHDW_AM4_LED_MODE1;
632
633 err = phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg);
634 if (err < 0)
635 goto done;
636
637 /* Enable auto MDIX */
638 err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
639 MII_BRCM_FET_SHDW_MC_FAME);
640 if (err < 0)
641 goto done;
642
643 if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {
644 /* Enable auto power down */
645 err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
646 MII_BRCM_FET_SHDW_AS2_APDE);
647 }
648
649 done:
650 /* Disable shadow register access */
651 err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest);
652 if (!err)
653 err = err2;
654
655 return err;
656 }
657
658 static int brcm_fet_ack_interrupt(struct phy_device *phydev)
659 {
660 int reg;
661
662 /* Clear pending interrupts. */
663 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
664 if (reg < 0)
665 return reg;
666
667 return 0;
668 }
669
670 static int brcm_fet_config_intr(struct phy_device *phydev)
671 {
672 int reg, err;
673
674 reg = phy_read(phydev, MII_BRCM_FET_INTREG);
675 if (reg < 0)
676 return reg;
677
678 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
679 reg &= ~MII_BRCM_FET_IR_MASK;
680 else
681 reg |= MII_BRCM_FET_IR_MASK;
682
683 err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
684 return err;
685 }
686
687 static struct phy_driver bcm5411_driver = {
688 .phy_id = PHY_ID_BCM5411,
689 .phy_id_mask = 0xfffffff0,
690 .name = "Broadcom BCM5411",
691 .features = PHY_GBIT_FEATURES |
692 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
693 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
694 .config_init = bcm54xx_config_init,
695 .config_aneg = genphy_config_aneg,
696 .read_status = genphy_read_status,
697 .ack_interrupt = bcm54xx_ack_interrupt,
698 .config_intr = bcm54xx_config_intr,
699 .driver = { .owner = THIS_MODULE },
700 };
701
702 static struct phy_driver bcm5421_driver = {
703 .phy_id = PHY_ID_BCM5421,
704 .phy_id_mask = 0xfffffff0,
705 .name = "Broadcom BCM5421",
706 .features = PHY_GBIT_FEATURES |
707 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
708 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
709 .config_init = bcm54xx_config_init,
710 .config_aneg = genphy_config_aneg,
711 .read_status = genphy_read_status,
712 .ack_interrupt = bcm54xx_ack_interrupt,
713 .config_intr = bcm54xx_config_intr,
714 .driver = { .owner = THIS_MODULE },
715 };
716
717 static struct phy_driver bcm5461_driver = {
718 .phy_id = PHY_ID_BCM5461,
719 .phy_id_mask = 0xfffffff0,
720 .name = "Broadcom BCM5461",
721 .features = PHY_GBIT_FEATURES |
722 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
723 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
724 .config_init = bcm54xx_config_init,
725 .config_aneg = genphy_config_aneg,
726 .read_status = genphy_read_status,
727 .ack_interrupt = bcm54xx_ack_interrupt,
728 .config_intr = bcm54xx_config_intr,
729 .driver = { .owner = THIS_MODULE },
730 };
731
732 static struct phy_driver bcm5464_driver = {
733 .phy_id = PHY_ID_BCM5464,
734 .phy_id_mask = 0xfffffff0,
735 .name = "Broadcom BCM5464",
736 .features = PHY_GBIT_FEATURES |
737 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
738 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
739 .config_init = bcm54xx_config_init,
740 .config_aneg = genphy_config_aneg,
741 .read_status = genphy_read_status,
742 .ack_interrupt = bcm54xx_ack_interrupt,
743 .config_intr = bcm54xx_config_intr,
744 .driver = { .owner = THIS_MODULE },
745 };
746
747 static struct phy_driver bcm5481_driver = {
748 .phy_id = PHY_ID_BCM5481,
749 .phy_id_mask = 0xfffffff0,
750 .name = "Broadcom BCM5481",
751 .features = PHY_GBIT_FEATURES |
752 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
753 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
754 .config_init = bcm54xx_config_init,
755 .config_aneg = bcm5481_config_aneg,
756 .read_status = genphy_read_status,
757 .ack_interrupt = bcm54xx_ack_interrupt,
758 .config_intr = bcm54xx_config_intr,
759 .driver = { .owner = THIS_MODULE },
760 };
761
762 static struct phy_driver bcm5482_driver = {
763 .phy_id = PHY_ID_BCM5482,
764 .phy_id_mask = 0xfffffff0,
765 .name = "Broadcom BCM5482",
766 .features = PHY_GBIT_FEATURES |
767 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
768 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
769 .config_init = bcm5482_config_init,
770 .config_aneg = genphy_config_aneg,
771 .read_status = bcm5482_read_status,
772 .ack_interrupt = bcm54xx_ack_interrupt,
773 .config_intr = bcm54xx_config_intr,
774 .driver = { .owner = THIS_MODULE },
775 };
776
777 static struct phy_driver bcm50610_driver = {
778 .phy_id = PHY_ID_BCM50610,
779 .phy_id_mask = 0xfffffff0,
780 .name = "Broadcom BCM50610",
781 .features = PHY_GBIT_FEATURES |
782 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
783 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
784 .config_init = bcm54xx_config_init,
785 .config_aneg = genphy_config_aneg,
786 .read_status = genphy_read_status,
787 .ack_interrupt = bcm54xx_ack_interrupt,
788 .config_intr = bcm54xx_config_intr,
789 .driver = { .owner = THIS_MODULE },
790 };
791
792 static struct phy_driver bcm50610m_driver = {
793 .phy_id = PHY_ID_BCM50610M,
794 .phy_id_mask = 0xfffffff0,
795 .name = "Broadcom BCM50610M",
796 .features = PHY_GBIT_FEATURES |
797 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
798 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
799 .config_init = bcm54xx_config_init,
800 .config_aneg = genphy_config_aneg,
801 .read_status = genphy_read_status,
802 .ack_interrupt = bcm54xx_ack_interrupt,
803 .config_intr = bcm54xx_config_intr,
804 .driver = { .owner = THIS_MODULE },
805 };
806
807 static struct phy_driver bcm57780_driver = {
808 .phy_id = PHY_ID_BCM57780,
809 .phy_id_mask = 0xfffffff0,
810 .name = "Broadcom BCM57780",
811 .features = PHY_GBIT_FEATURES |
812 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
813 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
814 .config_init = bcm54xx_config_init,
815 .config_aneg = genphy_config_aneg,
816 .read_status = genphy_read_status,
817 .ack_interrupt = bcm54xx_ack_interrupt,
818 .config_intr = bcm54xx_config_intr,
819 .driver = { .owner = THIS_MODULE },
820 };
821
822 static struct phy_driver bcmac131_driver = {
823 .phy_id = PHY_ID_BCMAC131,
824 .phy_id_mask = 0xfffffff0,
825 .name = "Broadcom BCMAC131",
826 .features = PHY_BASIC_FEATURES |
827 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
828 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
829 .config_init = brcm_fet_config_init,
830 .config_aneg = genphy_config_aneg,
831 .read_status = genphy_read_status,
832 .ack_interrupt = brcm_fet_ack_interrupt,
833 .config_intr = brcm_fet_config_intr,
834 .driver = { .owner = THIS_MODULE },
835 };
836
837 static struct phy_driver bcm5241_driver = {
838 .phy_id = PHY_ID_BCM5241,
839 .phy_id_mask = 0xfffffff0,
840 .name = "Broadcom BCM5241",
841 .features = PHY_BASIC_FEATURES |
842 SUPPORTED_Pause | SUPPORTED_Asym_Pause,
843 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
844 .config_init = brcm_fet_config_init,
845 .config_aneg = genphy_config_aneg,
846 .read_status = genphy_read_status,
847 .ack_interrupt = brcm_fet_ack_interrupt,
848 .config_intr = brcm_fet_config_intr,
849 .driver = { .owner = THIS_MODULE },
850 };
851
852 static int __init broadcom_init(void)
853 {
854 int ret;
855
856 ret = phy_driver_register(&bcm5411_driver);
857 if (ret)
858 goto out_5411;
859 ret = phy_driver_register(&bcm5421_driver);
860 if (ret)
861 goto out_5421;
862 ret = phy_driver_register(&bcm5461_driver);
863 if (ret)
864 goto out_5461;
865 ret = phy_driver_register(&bcm5464_driver);
866 if (ret)
867 goto out_5464;
868 ret = phy_driver_register(&bcm5481_driver);
869 if (ret)
870 goto out_5481;
871 ret = phy_driver_register(&bcm5482_driver);
872 if (ret)
873 goto out_5482;
874 ret = phy_driver_register(&bcm50610_driver);
875 if (ret)
876 goto out_50610;
877 ret = phy_driver_register(&bcm50610m_driver);
878 if (ret)
879 goto out_50610m;
880 ret = phy_driver_register(&bcm57780_driver);
881 if (ret)
882 goto out_57780;
883 ret = phy_driver_register(&bcmac131_driver);
884 if (ret)
885 goto out_ac131;
886 ret = phy_driver_register(&bcm5241_driver);
887 if (ret)
888 goto out_5241;
889 return ret;
890
891 out_5241:
892 phy_driver_unregister(&bcmac131_driver);
893 out_ac131:
894 phy_driver_unregister(&bcm57780_driver);
895 out_57780:
896 phy_driver_unregister(&bcm50610m_driver);
897 out_50610m:
898 phy_driver_unregister(&bcm50610_driver);
899 out_50610:
900 phy_driver_unregister(&bcm5482_driver);
901 out_5482:
902 phy_driver_unregister(&bcm5481_driver);
903 out_5481:
904 phy_driver_unregister(&bcm5464_driver);
905 out_5464:
906 phy_driver_unregister(&bcm5461_driver);
907 out_5461:
908 phy_driver_unregister(&bcm5421_driver);
909 out_5421:
910 phy_driver_unregister(&bcm5411_driver);
911 out_5411:
912 return ret;
913 }
914
915 static void __exit broadcom_exit(void)
916 {
917 phy_driver_unregister(&bcm5241_driver);
918 phy_driver_unregister(&bcmac131_driver);
919 phy_driver_unregister(&bcm57780_driver);
920 phy_driver_unregister(&bcm50610m_driver);
921 phy_driver_unregister(&bcm50610_driver);
922 phy_driver_unregister(&bcm5482_driver);
923 phy_driver_unregister(&bcm5481_driver);
924 phy_driver_unregister(&bcm5464_driver);
925 phy_driver_unregister(&bcm5461_driver);
926 phy_driver_unregister(&bcm5421_driver);
927 phy_driver_unregister(&bcm5411_driver);
928 }
929
930 module_init(broadcom_init);
931 module_exit(broadcom_exit);
932
933 static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
934 { PHY_ID_BCM5411, 0xfffffff0 },
935 { PHY_ID_BCM5421, 0xfffffff0 },
936 { PHY_ID_BCM5461, 0xfffffff0 },
937 { PHY_ID_BCM5464, 0xfffffff0 },
938 { PHY_ID_BCM5482, 0xfffffff0 },
939 { PHY_ID_BCM5482, 0xfffffff0 },
940 { PHY_ID_BCM50610, 0xfffffff0 },
941 { PHY_ID_BCM50610M, 0xfffffff0 },
942 { PHY_ID_BCM57780, 0xfffffff0 },
943 { PHY_ID_BCMAC131, 0xfffffff0 },
944 { PHY_ID_BCM5241, 0xfffffff0 },
945 { }
946 };
947
948 MODULE_DEVICE_TABLE(mdio, broadcom_tbl);