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v4.17
 
  1/*
  2 * drivers/net/phy/smsc.c
  3 *
  4 * Driver for SMSC PHYs
  5 *
  6 * Author: Herbert Valerio Riedel
  7 *
  8 * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
  9 *
 10 * This program is free software; you can redistribute  it and/or modify it
 11 * under  the terms of  the GNU General  Public License as published by the
 12 * Free Software Foundation;  either version 2 of the  License, or (at your
 13 * option) any later version.
 14 *
 15 * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
 16 *
 17 */
 18
 
 19#include <linux/kernel.h>
 20#include <linux/module.h>
 21#include <linux/mii.h>
 22#include <linux/ethtool.h>
 23#include <linux/of.h>
 24#include <linux/phy.h>
 25#include <linux/netdevice.h>
 26#include <linux/smscphy.h>
 27
 
 
 
 
 
 
 
 
 
 
 
 28struct smsc_hw_stat {
 29	const char *string;
 30	u8 reg;
 31	u8 bits;
 32};
 33
 34static struct smsc_hw_stat smsc_hw_stats[] = {
 35	{ "phy_symbol_errors", 26, 16},
 36};
 37
 38struct smsc_phy_priv {
 39	bool energy_enable;
 
 40};
 41
 42static int smsc_phy_config_intr(struct phy_device *phydev)
 43{
 44	int rc = phy_write (phydev, MII_LAN83C185_IM,
 45			((PHY_INTERRUPT_ENABLED == phydev->interrupts)
 46			? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
 47			: 0));
 48
 49	return rc < 0 ? rc : 0;
 50}
 51
 52static int smsc_phy_ack_interrupt(struct phy_device *phydev)
 53{
 54	int rc = phy_read (phydev, MII_LAN83C185_ISF);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 55
 56	return rc < 0 ? rc : 0;
 57}
 58
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 59static int smsc_phy_config_init(struct phy_device *phydev)
 60{
 61	struct smsc_phy_priv *priv = phydev->priv;
 
 
 
 
 62
 63	int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
 64
 65	if (rc < 0)
 66		return rc;
 67
 68	if (priv->energy_enable) {
 69		/* Enable energy detect mode for this SMSC Transceivers */
 70		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
 71			       rc | MII_LAN83C185_EDPWRDOWN);
 72		if (rc < 0)
 73			return rc;
 74	}
 75
 76	return smsc_phy_ack_interrupt(phydev);
 77}
 78
 79static int smsc_phy_reset(struct phy_device *phydev)
 80{
 81	int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
 82	if (rc < 0)
 83		return rc;
 84
 85	/* If the SMSC PHY is in power down mode, then set it
 86	 * in all capable mode before using it.
 87	 */
 88	if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) {
 89		/* set "all capable" mode */
 90		rc |= MII_LAN83C185_MODE_ALL;
 91		phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc);
 92	}
 93
 94	/* reset the phy */
 95	return genphy_soft_reset(phydev);
 96}
 97
 98static int lan911x_config_init(struct phy_device *phydev)
 99{
100	return smsc_phy_ack_interrupt(phydev);
101}
102
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
103/*
104 * The LAN87xx suffers from rare absence of the ENERGYON-bit when Ethernet cable
105 * plugs in while LAN87xx is in Energy Detect Power-Down mode. This leads to
106 * unstable detection of plugging in Ethernet cable.
107 * This workaround disables Energy Detect Power-Down mode and waiting for
108 * response on link pulses to detect presence of plugged Ethernet cable.
109 * The Energy Detect Power-Down mode is enabled again in the end of procedure to
110 * save approximately 220 mW of power if cable is unplugged.
111 */
112static int lan87xx_read_status(struct phy_device *phydev)
113{
114	struct smsc_phy_priv *priv = phydev->priv;
115
116	int err = genphy_read_status(phydev);
117
118	if (!phydev->link && priv->energy_enable) {
119		int i;
120
121		/* Disable EDPD to wake up PHY */
122		int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
123		if (rc < 0)
124			return rc;
125
126		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
127			       rc & ~MII_LAN83C185_EDPWRDOWN);
128		if (rc < 0)
129			return rc;
130
131		/* Wait max 640 ms to detect energy */
132		for (i = 0; i < 64; i++) {
133			/* Sleep to allow link test pulses to be sent */
134			msleep(10);
135			rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
136			if (rc < 0)
137				return rc;
138			if (rc & MII_LAN83C185_ENERGYON)
139				break;
140		}
141
142		/* Re-enable EDPD */
143		rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
144		if (rc < 0)
145			return rc;
146
147		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
148			       rc | MII_LAN83C185_EDPWRDOWN);
149		if (rc < 0)
150			return rc;
151	}
152
153	return err;
154}
155
156static int smsc_get_sset_count(struct phy_device *phydev)
157{
158	return ARRAY_SIZE(smsc_hw_stats);
159}
160
161static void smsc_get_strings(struct phy_device *phydev, u8 *data)
162{
163	int i;
164
165	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++) {
166		strncpy(data + i * ETH_GSTRING_LEN,
167		       smsc_hw_stats[i].string, ETH_GSTRING_LEN);
168	}
169}
170
171#ifndef UINT64_MAX
172#define UINT64_MAX              (u64)(~((u64)0))
173#endif
174static u64 smsc_get_stat(struct phy_device *phydev, int i)
175{
176	struct smsc_hw_stat stat = smsc_hw_stats[i];
177	int val;
178	u64 ret;
179
180	val = phy_read(phydev, stat.reg);
181	if (val < 0)
182		ret = UINT64_MAX;
183	else
184		ret = val;
185
186	return ret;
187}
188
189static void smsc_get_stats(struct phy_device *phydev,
190			   struct ethtool_stats *stats, u64 *data)
191{
192	int i;
193
194	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)
195		data[i] = smsc_get_stat(phydev, i);
196}
197
 
 
 
 
 
 
 
 
198static int smsc_phy_probe(struct phy_device *phydev)
199{
200	struct device *dev = &phydev->mdio.dev;
201	struct device_node *of_node = dev->of_node;
202	struct smsc_phy_priv *priv;
 
203
204	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
205	if (!priv)
206		return -ENOMEM;
207
208	priv->energy_enable = true;
209
210	if (of_property_read_bool(of_node, "smsc,disable-energy-detect"))
211		priv->energy_enable = false;
212
213	phydev->priv = priv;
214
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
215	return 0;
216}
217
218static struct phy_driver smsc_phy_driver[] = {
219{
220	.phy_id		= 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
221	.phy_id_mask	= 0xfffffff0,
222	.name		= "SMSC LAN83C185",
223
224	.features	= PHY_BASIC_FEATURES,
225	.flags		= PHY_HAS_INTERRUPT,
226
227	.probe		= smsc_phy_probe,
228
229	/* basic functions */
230	.config_init	= smsc_phy_config_init,
231	.soft_reset	= smsc_phy_reset,
232
233	/* IRQ related */
234	.ack_interrupt	= smsc_phy_ack_interrupt,
235	.config_intr	= smsc_phy_config_intr,
 
236
237	.suspend	= genphy_suspend,
238	.resume		= genphy_resume,
239}, {
240	.phy_id		= 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
241	.phy_id_mask	= 0xfffffff0,
242	.name		= "SMSC LAN8187",
243
244	.features	= PHY_BASIC_FEATURES,
245	.flags		= PHY_HAS_INTERRUPT,
246
247	.probe		= smsc_phy_probe,
248
249	/* basic functions */
250	.config_init	= smsc_phy_config_init,
251	.soft_reset	= smsc_phy_reset,
252
253	/* IRQ related */
254	.ack_interrupt	= smsc_phy_ack_interrupt,
255	.config_intr	= smsc_phy_config_intr,
 
256
257	/* Statistics */
258	.get_sset_count = smsc_get_sset_count,
259	.get_strings	= smsc_get_strings,
260	.get_stats	= smsc_get_stats,
261
262	.suspend	= genphy_suspend,
263	.resume		= genphy_resume,
264}, {
 
 
 
265	.phy_id		= 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
266	.phy_id_mask	= 0xfffffff0,
267	.name		= "SMSC LAN8700",
268
269	.features	= PHY_BASIC_FEATURES,
270	.flags		= PHY_HAS_INTERRUPT,
271
272	.probe		= smsc_phy_probe,
273
274	/* basic functions */
275	.read_status	= lan87xx_read_status,
276	.config_init	= smsc_phy_config_init,
277	.soft_reset	= smsc_phy_reset,
 
278
279	/* IRQ related */
280	.ack_interrupt	= smsc_phy_ack_interrupt,
281	.config_intr	= smsc_phy_config_intr,
 
282
283	/* Statistics */
284	.get_sset_count = smsc_get_sset_count,
285	.get_strings	= smsc_get_strings,
286	.get_stats	= smsc_get_stats,
287
288	.suspend	= genphy_suspend,
289	.resume		= genphy_resume,
290}, {
291	.phy_id		= 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
292	.phy_id_mask	= 0xfffffff0,
293	.name		= "SMSC LAN911x Internal PHY",
294
295	.features	= PHY_BASIC_FEATURES,
296	.flags		= PHY_HAS_INTERRUPT,
297
298	.probe		= smsc_phy_probe,
299
300	/* basic functions */
301	.config_init	= lan911x_config_init,
302
303	/* IRQ related */
304	.ack_interrupt	= smsc_phy_ack_interrupt,
305	.config_intr	= smsc_phy_config_intr,
 
306
307	.suspend	= genphy_suspend,
308	.resume		= genphy_resume,
309}, {
 
 
 
310	.phy_id		= 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
311	.phy_id_mask	= 0xfffffff0,
312	.name		= "SMSC LAN8710/LAN8720",
313
314	.features	= PHY_BASIC_FEATURES,
315	.flags		= PHY_HAS_INTERRUPT | PHY_RST_AFTER_CLK_EN,
316
317	.probe		= smsc_phy_probe,
 
318
319	/* basic functions */
320	.read_status	= lan87xx_read_status,
321	.config_init	= smsc_phy_config_init,
322	.soft_reset	= smsc_phy_reset,
 
323
324	/* IRQ related */
325	.ack_interrupt	= smsc_phy_ack_interrupt,
326	.config_intr	= smsc_phy_config_intr,
 
327
328	/* Statistics */
329	.get_sset_count = smsc_get_sset_count,
330	.get_strings	= smsc_get_strings,
331	.get_stats	= smsc_get_stats,
332
333	.suspend	= genphy_suspend,
334	.resume		= genphy_resume,
335}, {
336	.phy_id		= 0x0007c110,
337	.phy_id_mask	= 0xfffffff0,
338	.name		= "SMSC LAN8740",
339
340	.features	= PHY_BASIC_FEATURES,
341	.flags		= PHY_HAS_INTERRUPT,
342
343	.probe		= smsc_phy_probe,
344
345	/* basic functions */
346	.read_status	= lan87xx_read_status,
347	.config_init	= smsc_phy_config_init,
348	.soft_reset	= smsc_phy_reset,
349
350	/* IRQ related */
351	.ack_interrupt	= smsc_phy_ack_interrupt,
352	.config_intr	= smsc_phy_config_intr,
 
353
354	/* Statistics */
355	.get_sset_count = smsc_get_sset_count,
356	.get_strings	= smsc_get_strings,
357	.get_stats	= smsc_get_stats,
358
359	.suspend	= genphy_suspend,
360	.resume		= genphy_resume,
361} };
362
363module_phy_driver(smsc_phy_driver);
364
365MODULE_DESCRIPTION("SMSC PHY driver");
366MODULE_AUTHOR("Herbert Valerio Riedel");
367MODULE_LICENSE("GPL");
368
369static struct mdio_device_id __maybe_unused smsc_tbl[] = {
370	{ 0x0007c0a0, 0xfffffff0 },
371	{ 0x0007c0b0, 0xfffffff0 },
372	{ 0x0007c0c0, 0xfffffff0 },
373	{ 0x0007c0d0, 0xfffffff0 },
374	{ 0x0007c0f0, 0xfffffff0 },
375	{ 0x0007c110, 0xfffffff0 },
376	{ }
377};
378
379MODULE_DEVICE_TABLE(mdio, smsc_tbl);
v5.14.15
  1// SPDX-License-Identifier: GPL-2.0+
  2/*
  3 * drivers/net/phy/smsc.c
  4 *
  5 * Driver for SMSC PHYs
  6 *
  7 * Author: Herbert Valerio Riedel
  8 *
  9 * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
 10 *
 
 
 
 
 
 11 * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
 12 *
 13 */
 14
 15#include <linux/clk.h>
 16#include <linux/kernel.h>
 17#include <linux/module.h>
 18#include <linux/mii.h>
 19#include <linux/ethtool.h>
 20#include <linux/of.h>
 21#include <linux/phy.h>
 22#include <linux/netdevice.h>
 23#include <linux/smscphy.h>
 24
 25/* Vendor-specific PHY Definitions */
 26/* EDPD NLP / crossover time configuration */
 27#define PHY_EDPD_CONFIG			16
 28#define PHY_EDPD_CONFIG_EXT_CROSSOVER_	0x0001
 29
 30/* Control/Status Indication Register */
 31#define SPECIAL_CTRL_STS		27
 32#define SPECIAL_CTRL_STS_OVRRD_AMDIX_	0x8000
 33#define SPECIAL_CTRL_STS_AMDIX_ENABLE_	0x4000
 34#define SPECIAL_CTRL_STS_AMDIX_STATE_	0x2000
 35
 36struct smsc_hw_stat {
 37	const char *string;
 38	u8 reg;
 39	u8 bits;
 40};
 41
 42static struct smsc_hw_stat smsc_hw_stats[] = {
 43	{ "phy_symbol_errors", 26, 16},
 44};
 45
 46struct smsc_phy_priv {
 47	bool energy_enable;
 48	struct clk *refclk;
 49};
 50
 51static int smsc_phy_ack_interrupt(struct phy_device *phydev)
 52{
 53	int rc = phy_read(phydev, MII_LAN83C185_ISF);
 
 
 
 54
 55	return rc < 0 ? rc : 0;
 56}
 57
 58static int smsc_phy_config_intr(struct phy_device *phydev)
 59{
 60	struct smsc_phy_priv *priv = phydev->priv;
 61	u16 intmask = 0;
 62	int rc;
 63
 64	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 65		rc = smsc_phy_ack_interrupt(phydev);
 66		if (rc)
 67			return rc;
 68
 69		intmask = MII_LAN83C185_ISF_INT4 | MII_LAN83C185_ISF_INT6;
 70		if (priv->energy_enable)
 71			intmask |= MII_LAN83C185_ISF_INT7;
 72		rc = phy_write(phydev, MII_LAN83C185_IM, intmask);
 73	} else {
 74		rc = phy_write(phydev, MII_LAN83C185_IM, intmask);
 75		if (rc)
 76			return rc;
 77
 78		rc = smsc_phy_ack_interrupt(phydev);
 79	}
 80
 81	return rc < 0 ? rc : 0;
 82}
 83
 84static irqreturn_t smsc_phy_handle_interrupt(struct phy_device *phydev)
 85{
 86	int irq_status, irq_enabled;
 87
 88	irq_enabled = phy_read(phydev, MII_LAN83C185_IM);
 89	if (irq_enabled < 0) {
 90		phy_error(phydev);
 91		return IRQ_NONE;
 92	}
 93
 94	irq_status = phy_read(phydev, MII_LAN83C185_ISF);
 95	if (irq_status < 0) {
 96		phy_error(phydev);
 97		return IRQ_NONE;
 98	}
 99
100	if (!(irq_status & irq_enabled))
101		return IRQ_NONE;
102
103	phy_trigger_machine(phydev);
104
105	return IRQ_HANDLED;
106}
107
108static int smsc_phy_config_init(struct phy_device *phydev)
109{
110	struct smsc_phy_priv *priv = phydev->priv;
111	int rc;
112
113	if (!priv->energy_enable)
114		return 0;
115
116	rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
117
118	if (rc < 0)
119		return rc;
120
121	/* Enable energy detect mode for this SMSC Transceivers */
122	rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
123		       rc | MII_LAN83C185_EDPWRDOWN);
124	if (rc < 0)
125		return rc;
 
 
126
127	return smsc_phy_ack_interrupt(phydev);
128}
129
130static int smsc_phy_reset(struct phy_device *phydev)
131{
132	int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
133	if (rc < 0)
134		return rc;
135
136	/* If the SMSC PHY is in power down mode, then set it
137	 * in all capable mode before using it.
138	 */
139	if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) {
140		/* set "all capable" mode */
141		rc |= MII_LAN83C185_MODE_ALL;
142		phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc);
143	}
144
145	/* reset the phy */
146	return genphy_soft_reset(phydev);
147}
148
149static int lan911x_config_init(struct phy_device *phydev)
150{
151	return smsc_phy_ack_interrupt(phydev);
152}
153
154static int lan87xx_config_aneg(struct phy_device *phydev)
155{
156	int rc;
157	int val;
158
159	switch (phydev->mdix_ctrl) {
160	case ETH_TP_MDI:
161		val = SPECIAL_CTRL_STS_OVRRD_AMDIX_;
162		break;
163	case ETH_TP_MDI_X:
164		val = SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
165			SPECIAL_CTRL_STS_AMDIX_STATE_;
166		break;
167	case ETH_TP_MDI_AUTO:
168		val = SPECIAL_CTRL_STS_AMDIX_ENABLE_;
169		break;
170	default:
171		return genphy_config_aneg(phydev);
172	}
173
174	rc = phy_read(phydev, SPECIAL_CTRL_STS);
175	if (rc < 0)
176		return rc;
177
178	rc &= ~(SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
179		SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
180		SPECIAL_CTRL_STS_AMDIX_STATE_);
181	rc |= val;
182	phy_write(phydev, SPECIAL_CTRL_STS, rc);
183
184	phydev->mdix = phydev->mdix_ctrl;
185	return genphy_config_aneg(phydev);
186}
187
188static int lan95xx_config_aneg_ext(struct phy_device *phydev)
189{
190	int rc;
191
192	if (phydev->phy_id != 0x0007c0f0) /* not (LAN9500A or LAN9505A) */
193		return lan87xx_config_aneg(phydev);
194
195	/* Extend Manual AutoMDIX timer */
196	rc = phy_read(phydev, PHY_EDPD_CONFIG);
197	if (rc < 0)
198		return rc;
199
200	rc |= PHY_EDPD_CONFIG_EXT_CROSSOVER_;
201	phy_write(phydev, PHY_EDPD_CONFIG, rc);
202	return lan87xx_config_aneg(phydev);
203}
204
205/*
206 * The LAN87xx suffers from rare absence of the ENERGYON-bit when Ethernet cable
207 * plugs in while LAN87xx is in Energy Detect Power-Down mode. This leads to
208 * unstable detection of plugging in Ethernet cable.
209 * This workaround disables Energy Detect Power-Down mode and waiting for
210 * response on link pulses to detect presence of plugged Ethernet cable.
211 * The Energy Detect Power-Down mode is enabled again in the end of procedure to
212 * save approximately 220 mW of power if cable is unplugged.
213 */
214static int lan87xx_read_status(struct phy_device *phydev)
215{
216	struct smsc_phy_priv *priv = phydev->priv;
217
218	int err = genphy_read_status(phydev);
219
220	if (!phydev->link && priv->energy_enable) {
 
 
221		/* Disable EDPD to wake up PHY */
222		int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
223		if (rc < 0)
224			return rc;
225
226		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
227			       rc & ~MII_LAN83C185_EDPWRDOWN);
228		if (rc < 0)
229			return rc;
230
231		/* Wait max 640 ms to detect energy and the timeout is not
232		 * an actual error.
233		 */
234		read_poll_timeout(phy_read, rc,
235				  rc & MII_LAN83C185_ENERGYON || rc < 0,
236				  10000, 640000, true, phydev,
237				  MII_LAN83C185_CTRL_STATUS);
238		if (rc < 0)
239			return rc;
 
240
241		/* Re-enable EDPD */
242		rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
243		if (rc < 0)
244			return rc;
245
246		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
247			       rc | MII_LAN83C185_EDPWRDOWN);
248		if (rc < 0)
249			return rc;
250	}
251
252	return err;
253}
254
255static int smsc_get_sset_count(struct phy_device *phydev)
256{
257	return ARRAY_SIZE(smsc_hw_stats);
258}
259
260static void smsc_get_strings(struct phy_device *phydev, u8 *data)
261{
262	int i;
263
264	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++) {
265		strncpy(data + i * ETH_GSTRING_LEN,
266		       smsc_hw_stats[i].string, ETH_GSTRING_LEN);
267	}
268}
269
 
 
 
270static u64 smsc_get_stat(struct phy_device *phydev, int i)
271{
272	struct smsc_hw_stat stat = smsc_hw_stats[i];
273	int val;
274	u64 ret;
275
276	val = phy_read(phydev, stat.reg);
277	if (val < 0)
278		ret = U64_MAX;
279	else
280		ret = val;
281
282	return ret;
283}
284
285static void smsc_get_stats(struct phy_device *phydev,
286			   struct ethtool_stats *stats, u64 *data)
287{
288	int i;
289
290	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)
291		data[i] = smsc_get_stat(phydev, i);
292}
293
294static void smsc_phy_remove(struct phy_device *phydev)
295{
296	struct smsc_phy_priv *priv = phydev->priv;
297
298	clk_disable_unprepare(priv->refclk);
299	clk_put(priv->refclk);
300}
301
302static int smsc_phy_probe(struct phy_device *phydev)
303{
304	struct device *dev = &phydev->mdio.dev;
305	struct device_node *of_node = dev->of_node;
306	struct smsc_phy_priv *priv;
307	int ret;
308
309	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
310	if (!priv)
311		return -ENOMEM;
312
313	priv->energy_enable = true;
314
315	if (of_property_read_bool(of_node, "smsc,disable-energy-detect"))
316		priv->energy_enable = false;
317
318	phydev->priv = priv;
319
320	/* Make clk optional to keep DTB backward compatibility. */
321	priv->refclk = clk_get_optional(dev, NULL);
322	if (IS_ERR(priv->refclk))
323		return dev_err_probe(dev, PTR_ERR(priv->refclk),
324				     "Failed to request clock\n");
325
326	ret = clk_prepare_enable(priv->refclk);
327	if (ret)
328		return ret;
329
330	ret = clk_set_rate(priv->refclk, 50 * 1000 * 1000);
331	if (ret) {
332		clk_disable_unprepare(priv->refclk);
333		return ret;
334	}
335
336	return 0;
337}
338
339static struct phy_driver smsc_phy_driver[] = {
340{
341	.phy_id		= 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
342	.phy_id_mask	= 0xfffffff0,
343	.name		= "SMSC LAN83C185",
344
345	/* PHY_BASIC_FEATURES */
 
346
347	.probe		= smsc_phy_probe,
348
349	/* basic functions */
350	.config_init	= smsc_phy_config_init,
351	.soft_reset	= smsc_phy_reset,
352
353	/* IRQ related */
 
354	.config_intr	= smsc_phy_config_intr,
355	.handle_interrupt = smsc_phy_handle_interrupt,
356
357	.suspend	= genphy_suspend,
358	.resume		= genphy_resume,
359}, {
360	.phy_id		= 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
361	.phy_id_mask	= 0xfffffff0,
362	.name		= "SMSC LAN8187",
363
364	/* PHY_BASIC_FEATURES */
 
365
366	.probe		= smsc_phy_probe,
367
368	/* basic functions */
369	.config_init	= smsc_phy_config_init,
370	.soft_reset	= smsc_phy_reset,
371
372	/* IRQ related */
 
373	.config_intr	= smsc_phy_config_intr,
374	.handle_interrupt = smsc_phy_handle_interrupt,
375
376	/* Statistics */
377	.get_sset_count = smsc_get_sset_count,
378	.get_strings	= smsc_get_strings,
379	.get_stats	= smsc_get_stats,
380
381	.suspend	= genphy_suspend,
382	.resume		= genphy_resume,
383}, {
384	/* This covers internal PHY (phy_id: 0x0007C0C3) for
385	 * LAN9500 (PID: 0x9500), LAN9514 (PID: 0xec00), LAN9505 (PID: 0x9505)
386	 */
387	.phy_id		= 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
388	.phy_id_mask	= 0xfffffff0,
389	.name		= "SMSC LAN8700",
390
391	/* PHY_BASIC_FEATURES */
 
392
393	.probe		= smsc_phy_probe,
394
395	/* basic functions */
396	.read_status	= lan87xx_read_status,
397	.config_init	= smsc_phy_config_init,
398	.soft_reset	= smsc_phy_reset,
399	.config_aneg	= lan87xx_config_aneg,
400
401	/* IRQ related */
 
402	.config_intr	= smsc_phy_config_intr,
403	.handle_interrupt = smsc_phy_handle_interrupt,
404
405	/* Statistics */
406	.get_sset_count = smsc_get_sset_count,
407	.get_strings	= smsc_get_strings,
408	.get_stats	= smsc_get_stats,
409
410	.suspend	= genphy_suspend,
411	.resume		= genphy_resume,
412}, {
413	.phy_id		= 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
414	.phy_id_mask	= 0xfffffff0,
415	.name		= "SMSC LAN911x Internal PHY",
416
417	/* PHY_BASIC_FEATURES */
 
418
419	.probe		= smsc_phy_probe,
420
421	/* basic functions */
422	.config_init	= lan911x_config_init,
423
424	/* IRQ related */
 
425	.config_intr	= smsc_phy_config_intr,
426	.handle_interrupt = smsc_phy_handle_interrupt,
427
428	.suspend	= genphy_suspend,
429	.resume		= genphy_resume,
430}, {
431	/* This covers internal PHY (phy_id: 0x0007C0F0) for
432	 * LAN9500A (PID: 0x9E00), LAN9505A (PID: 0x9E01)
433	 */
434	.phy_id		= 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
435	.phy_id_mask	= 0xfffffff0,
436	.name		= "SMSC LAN8710/LAN8720",
437
438	/* PHY_BASIC_FEATURES */
 
439
440	.probe		= smsc_phy_probe,
441	.remove		= smsc_phy_remove,
442
443	/* basic functions */
444	.read_status	= lan87xx_read_status,
445	.config_init	= smsc_phy_config_init,
446	.soft_reset	= smsc_phy_reset,
447	.config_aneg	= lan95xx_config_aneg_ext,
448
449	/* IRQ related */
 
450	.config_intr	= smsc_phy_config_intr,
451	.handle_interrupt = smsc_phy_handle_interrupt,
452
453	/* Statistics */
454	.get_sset_count = smsc_get_sset_count,
455	.get_strings	= smsc_get_strings,
456	.get_stats	= smsc_get_stats,
457
458	.suspend	= genphy_suspend,
459	.resume		= genphy_resume,
460}, {
461	.phy_id		= 0x0007c110,
462	.phy_id_mask	= 0xfffffff0,
463	.name		= "SMSC LAN8740",
464
465	/* PHY_BASIC_FEATURES */
466	.flags		= PHY_RST_AFTER_CLK_EN,
467
468	.probe		= smsc_phy_probe,
469
470	/* basic functions */
471	.read_status	= lan87xx_read_status,
472	.config_init	= smsc_phy_config_init,
473	.soft_reset	= smsc_phy_reset,
474
475	/* IRQ related */
 
476	.config_intr	= smsc_phy_config_intr,
477	.handle_interrupt = smsc_phy_handle_interrupt,
478
479	/* Statistics */
480	.get_sset_count = smsc_get_sset_count,
481	.get_strings	= smsc_get_strings,
482	.get_stats	= smsc_get_stats,
483
484	.suspend	= genphy_suspend,
485	.resume		= genphy_resume,
486} };
487
488module_phy_driver(smsc_phy_driver);
489
490MODULE_DESCRIPTION("SMSC PHY driver");
491MODULE_AUTHOR("Herbert Valerio Riedel");
492MODULE_LICENSE("GPL");
493
494static struct mdio_device_id __maybe_unused smsc_tbl[] = {
495	{ 0x0007c0a0, 0xfffffff0 },
496	{ 0x0007c0b0, 0xfffffff0 },
497	{ 0x0007c0c0, 0xfffffff0 },
498	{ 0x0007c0d0, 0xfffffff0 },
499	{ 0x0007c0f0, 0xfffffff0 },
500	{ 0x0007c110, 0xfffffff0 },
501	{ }
502};
503
504MODULE_DEVICE_TABLE(mdio, smsc_tbl);