xref: /openbmc/linux/drivers/phy/tegra/xusb.h (revision 9b68f30b) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2014-2022, NVIDIA CORPORATION.  All rights reserved.
4  * Copyright (c) 2015, Google Inc.
5  */
6 
7 #ifndef __PHY_TEGRA_XUSB_H
8 #define __PHY_TEGRA_XUSB_H
9 
10 #include <linux/io.h>
11 #include <linux/iopoll.h>
12 #include <linux/mutex.h>
13 #include <linux/workqueue.h>
14 
15 #include <linux/usb/ch9.h>
16 #include <linux/usb/otg.h>
17 #include <linux/usb/role.h>
18 
19 /* legacy entry points for backwards-compatibility */
20 int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
21 int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
22 
23 struct phy;
24 struct phy_provider;
25 struct platform_device;
26 struct regulator;
27 
28 /*
29  * lanes
30  */
31 struct tegra_xusb_lane_soc {
32 	const char *name;
33 
34 	unsigned int offset;
35 	unsigned int shift;
36 	unsigned int mask;
37 
38 	const char * const *funcs;
39 	unsigned int num_funcs;
40 
41 	struct {
42 		unsigned int misc_ctl2;
43 	} regs;
44 };
45 
46 struct tegra_xusb_lane {
47 	const struct tegra_xusb_lane_soc *soc;
48 	struct tegra_xusb_pad *pad;
49 	struct device_node *np;
50 	struct list_head list;
51 	unsigned int function;
52 	unsigned int index;
53 };
54 
55 int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
56 			     struct device_node *np);
57 
58 struct tegra_xusb_usb3_lane {
59 	struct tegra_xusb_lane base;
60 };
61 
62 static inline struct tegra_xusb_usb3_lane *
63 to_usb3_lane(struct tegra_xusb_lane *lane)
64 {
65 	return container_of(lane, struct tegra_xusb_usb3_lane, base);
66 }
67 
68 struct tegra_xusb_usb2_lane {
69 	struct tegra_xusb_lane base;
70 
71 	u32 hs_curr_level_offset;
72 	bool powered_on;
73 };
74 
75 static inline struct tegra_xusb_usb2_lane *
76 to_usb2_lane(struct tegra_xusb_lane *lane)
77 {
78 	return container_of(lane, struct tegra_xusb_usb2_lane, base);
79 }
80 
81 struct tegra_xusb_ulpi_lane {
82 	struct tegra_xusb_lane base;
83 };
84 
85 static inline struct tegra_xusb_ulpi_lane *
86 to_ulpi_lane(struct tegra_xusb_lane *lane)
87 {
88 	return container_of(lane, struct tegra_xusb_ulpi_lane, base);
89 }
90 
91 struct tegra_xusb_hsic_lane {
92 	struct tegra_xusb_lane base;
93 
94 	u32 strobe_trim;
95 	u32 rx_strobe_trim;
96 	u32 rx_data_trim;
97 	u32 tx_rtune_n;
98 	u32 tx_rtune_p;
99 	u32 tx_rslew_n;
100 	u32 tx_rslew_p;
101 	bool auto_term;
102 };
103 
104 static inline struct tegra_xusb_hsic_lane *
105 to_hsic_lane(struct tegra_xusb_lane *lane)
106 {
107 	return container_of(lane, struct tegra_xusb_hsic_lane, base);
108 }
109 
110 struct tegra_xusb_pcie_lane {
111 	struct tegra_xusb_lane base;
112 };
113 
114 static inline struct tegra_xusb_pcie_lane *
115 to_pcie_lane(struct tegra_xusb_lane *lane)
116 {
117 	return container_of(lane, struct tegra_xusb_pcie_lane, base);
118 }
119 
120 struct tegra_xusb_sata_lane {
121 	struct tegra_xusb_lane base;
122 };
123 
124 static inline struct tegra_xusb_sata_lane *
125 to_sata_lane(struct tegra_xusb_lane *lane)
126 {
127 	return container_of(lane, struct tegra_xusb_sata_lane, base);
128 }
129 
130 struct tegra_xusb_lane_ops {
131 	struct tegra_xusb_lane *(*probe)(struct tegra_xusb_pad *pad,
132 					 struct device_node *np,
133 					 unsigned int index);
134 	void (*remove)(struct tegra_xusb_lane *lane);
135 	void (*iddq_enable)(struct tegra_xusb_lane *lane);
136 	void (*iddq_disable)(struct tegra_xusb_lane *lane);
137 	int (*enable_phy_sleepwalk)(struct tegra_xusb_lane *lane, enum usb_device_speed speed);
138 	int (*disable_phy_sleepwalk)(struct tegra_xusb_lane *lane);
139 	int (*enable_phy_wake)(struct tegra_xusb_lane *lane);
140 	int (*disable_phy_wake)(struct tegra_xusb_lane *lane);
141 	bool (*remote_wake_detected)(struct tegra_xusb_lane *lane);
142 };
143 
144 bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane, const char *function);
145 
146 /*
147  * pads
148  */
149 struct tegra_xusb_pad_soc;
150 struct tegra_xusb_padctl;
151 
152 struct tegra_xusb_pad_ops {
153 	struct tegra_xusb_pad *(*probe)(struct tegra_xusb_padctl *padctl,
154 					const struct tegra_xusb_pad_soc *soc,
155 					struct device_node *np);
156 	void (*remove)(struct tegra_xusb_pad *pad);
157 };
158 
159 struct tegra_xusb_pad_soc {
160 	const char *name;
161 
162 	const struct tegra_xusb_lane_soc *lanes;
163 	unsigned int num_lanes;
164 
165 	const struct tegra_xusb_pad_ops *ops;
166 };
167 
168 struct tegra_xusb_pad {
169 	const struct tegra_xusb_pad_soc *soc;
170 	struct tegra_xusb_padctl *padctl;
171 	struct phy_provider *provider;
172 	struct phy **lanes;
173 	struct device dev;
174 
175 	const struct tegra_xusb_lane_ops *ops;
176 
177 	struct list_head list;
178 };
179 
180 static inline struct tegra_xusb_pad *to_tegra_xusb_pad(struct device *dev)
181 {
182 	return container_of(dev, struct tegra_xusb_pad, dev);
183 }
184 
185 int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
186 			struct tegra_xusb_padctl *padctl,
187 			struct device_node *np);
188 int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
189 			    const struct phy_ops *ops);
190 void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad);
191 
192 struct tegra_xusb_usb3_pad {
193 	struct tegra_xusb_pad base;
194 
195 	unsigned int enable;
196 	struct mutex lock;
197 };
198 
199 static inline struct tegra_xusb_usb3_pad *
200 to_usb3_pad(struct tegra_xusb_pad *pad)
201 {
202 	return container_of(pad, struct tegra_xusb_usb3_pad, base);
203 }
204 
205 struct tegra_xusb_usb2_pad {
206 	struct tegra_xusb_pad base;
207 
208 	struct clk *clk;
209 	unsigned int enable;
210 	struct mutex lock;
211 };
212 
213 static inline struct tegra_xusb_usb2_pad *
214 to_usb2_pad(struct tegra_xusb_pad *pad)
215 {
216 	return container_of(pad, struct tegra_xusb_usb2_pad, base);
217 }
218 
219 struct tegra_xusb_ulpi_pad {
220 	struct tegra_xusb_pad base;
221 };
222 
223 static inline struct tegra_xusb_ulpi_pad *
224 to_ulpi_pad(struct tegra_xusb_pad *pad)
225 {
226 	return container_of(pad, struct tegra_xusb_ulpi_pad, base);
227 }
228 
229 struct tegra_xusb_hsic_pad {
230 	struct tegra_xusb_pad base;
231 
232 	struct regulator *supply;
233 	struct clk *clk;
234 };
235 
236 static inline struct tegra_xusb_hsic_pad *
237 to_hsic_pad(struct tegra_xusb_pad *pad)
238 {
239 	return container_of(pad, struct tegra_xusb_hsic_pad, base);
240 }
241 
242 struct tegra_xusb_pcie_pad {
243 	struct tegra_xusb_pad base;
244 
245 	struct reset_control *rst;
246 	struct clk *pll;
247 
248 	bool enable;
249 };
250 
251 static inline struct tegra_xusb_pcie_pad *
252 to_pcie_pad(struct tegra_xusb_pad *pad)
253 {
254 	return container_of(pad, struct tegra_xusb_pcie_pad, base);
255 }
256 
257 struct tegra_xusb_sata_pad {
258 	struct tegra_xusb_pad base;
259 
260 	struct reset_control *rst;
261 	struct clk *pll;
262 
263 	bool enable;
264 };
265 
266 static inline struct tegra_xusb_sata_pad *
267 to_sata_pad(struct tegra_xusb_pad *pad)
268 {
269 	return container_of(pad, struct tegra_xusb_sata_pad, base);
270 }
271 
272 /*
273  * ports
274  */
275 struct tegra_xusb_port_ops;
276 
277 struct tegra_xusb_port {
278 	struct tegra_xusb_padctl *padctl;
279 	struct tegra_xusb_lane *lane;
280 	unsigned int index;
281 
282 	struct list_head list;
283 	struct device dev;
284 
285 	struct usb_role_switch *usb_role_sw;
286 	struct work_struct usb_phy_work;
287 	struct usb_phy usb_phy;
288 
289 	const struct tegra_xusb_port_ops *ops;
290 };
291 
292 static inline struct tegra_xusb_port *to_tegra_xusb_port(struct device *dev)
293 {
294 	return container_of(dev, struct tegra_xusb_port, dev);
295 }
296 
297 struct tegra_xusb_lane_map {
298 	unsigned int port;
299 	const char *type;
300 	unsigned int index;
301 	const char *func;
302 };
303 
304 struct tegra_xusb_lane *
305 tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
306 			  const struct tegra_xusb_lane_map *map,
307 			  const char *function);
308 
309 struct tegra_xusb_port *
310 tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
311 		     unsigned int index);
312 
313 struct tegra_xusb_usb2_port {
314 	struct tegra_xusb_port base;
315 
316 	struct regulator *supply;
317 	enum usb_dr_mode mode;
318 	bool internal;
319 	int usb3_port_fake;
320 };
321 
322 static inline struct tegra_xusb_usb2_port *
323 to_usb2_port(struct tegra_xusb_port *port)
324 {
325 	return container_of(port, struct tegra_xusb_usb2_port, base);
326 }
327 
328 struct tegra_xusb_usb2_port *
329 tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
330 			  unsigned int index);
331 void tegra_xusb_usb2_port_release(struct tegra_xusb_port *port);
332 void tegra_xusb_usb2_port_remove(struct tegra_xusb_port *port);
333 
334 struct tegra_xusb_ulpi_port {
335 	struct tegra_xusb_port base;
336 
337 	struct regulator *supply;
338 	bool internal;
339 };
340 
341 static inline struct tegra_xusb_ulpi_port *
342 to_ulpi_port(struct tegra_xusb_port *port)
343 {
344 	return container_of(port, struct tegra_xusb_ulpi_port, base);
345 }
346 
347 void tegra_xusb_ulpi_port_release(struct tegra_xusb_port *port);
348 
349 struct tegra_xusb_hsic_port {
350 	struct tegra_xusb_port base;
351 };
352 
353 static inline struct tegra_xusb_hsic_port *
354 to_hsic_port(struct tegra_xusb_port *port)
355 {
356 	return container_of(port, struct tegra_xusb_hsic_port, base);
357 }
358 
359 void tegra_xusb_hsic_port_release(struct tegra_xusb_port *port);
360 
361 struct tegra_xusb_usb3_port {
362 	struct tegra_xusb_port base;
363 	bool context_saved;
364 	unsigned int port;
365 	bool internal;
366 	bool disable_gen2;
367 
368 	u32 tap1;
369 	u32 amp;
370 	u32 ctle_z;
371 	u32 ctle_g;
372 };
373 
374 static inline struct tegra_xusb_usb3_port *
375 to_usb3_port(struct tegra_xusb_port *port)
376 {
377 	return container_of(port, struct tegra_xusb_usb3_port, base);
378 }
379 
380 struct tegra_xusb_usb3_port *
381 tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
382 			  unsigned int index);
383 void tegra_xusb_usb3_port_release(struct tegra_xusb_port *port);
384 
385 struct tegra_xusb_port_ops {
386 	void (*release)(struct tegra_xusb_port *port);
387 	void (*remove)(struct tegra_xusb_port *port);
388 	int (*enable)(struct tegra_xusb_port *port);
389 	void (*disable)(struct tegra_xusb_port *port);
390 	struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
391 };
392 
393 /*
394  * pad controller
395  */
396 struct tegra_xusb_padctl_soc;
397 
398 struct tegra_xusb_padctl_ops {
399 	struct tegra_xusb_padctl *
400 		(*probe)(struct device *dev,
401 			 const struct tegra_xusb_padctl_soc *soc);
402 	void (*remove)(struct tegra_xusb_padctl *padctl);
403 
404 	int (*suspend_noirq)(struct tegra_xusb_padctl *padctl);
405 	int (*resume_noirq)(struct tegra_xusb_padctl *padctl);
406 	int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
407 				 unsigned int index);
408 	int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
409 			     unsigned int index, bool idle);
410 	int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
411 				    unsigned int index, bool enable);
412 	int (*vbus_override)(struct tegra_xusb_padctl *padctl, bool set);
413 	int (*utmi_port_reset)(struct phy *phy);
414 	void (*utmi_pad_power_on)(struct phy *phy);
415 	void (*utmi_pad_power_down)(struct phy *phy);
416 };
417 
418 struct tegra_xusb_padctl_soc {
419 	const struct tegra_xusb_pad_soc * const *pads;
420 	unsigned int num_pads;
421 
422 	struct {
423 		struct {
424 			const struct tegra_xusb_port_ops *ops;
425 			unsigned int count;
426 		} usb2, ulpi, hsic, usb3;
427 	} ports;
428 
429 	const struct tegra_xusb_padctl_ops *ops;
430 
431 	const char * const *supply_names;
432 	unsigned int num_supplies;
433 	bool supports_gen2;
434 	bool need_fake_usb3_port;
435 	bool poll_trk_completed;
436 	bool trk_hw_mode;
437 	bool supports_lp_cfg_en;
438 };
439 
440 struct tegra_xusb_padctl {
441 	struct device *dev;
442 	void __iomem *regs;
443 	struct mutex lock;
444 	struct reset_control *rst;
445 
446 	const struct tegra_xusb_padctl_soc *soc;
447 
448 	struct tegra_xusb_pad *pcie;
449 	struct tegra_xusb_pad *sata;
450 	struct tegra_xusb_pad *ulpi;
451 	struct tegra_xusb_pad *usb2;
452 	struct tegra_xusb_pad *hsic;
453 
454 	struct list_head ports;
455 	struct list_head lanes;
456 	struct list_head pads;
457 
458 	unsigned int enable;
459 
460 	struct clk *clk;
461 
462 	struct regulator_bulk_data *supplies;
463 };
464 
465 static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
466 				 unsigned long offset)
467 {
468 	dev_dbg(padctl->dev, "%08lx < %08x\n", offset, value);
469 	writel(value, padctl->regs + offset);
470 }
471 
472 static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
473 			       unsigned long offset)
474 {
475 	u32 value = readl(padctl->regs + offset);
476 	dev_dbg(padctl->dev, "%08lx > %08x\n", offset, value);
477 	return value;
478 }
479 
480 static inline u32 padctl_readl_poll(struct tegra_xusb_padctl *padctl,
481 				    unsigned long offset, u32 val, u32 mask,
482 				    int us)
483 {
484 	u32 regval;
485 	int err;
486 
487 	err = readl_poll_timeout(padctl->regs + offset, regval,
488 				 (regval & mask) == val, 1, us);
489 	if (err) {
490 		dev_err(padctl->dev, "%08lx poll timeout > %08x\n", offset,
491 			regval);
492 	}
493 
494 	return err;
495 }
496 
497 struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
498 					     const char *name,
499 					     unsigned int index);
500 
501 #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
502 extern const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc;
503 #endif
504 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
505 extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
506 #endif
507 #if defined(CONFIG_ARCH_TEGRA_186_SOC)
508 extern const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc;
509 #endif
510 #if defined(CONFIG_ARCH_TEGRA_194_SOC)
511 extern const struct tegra_xusb_padctl_soc tegra194_xusb_padctl_soc;
512 #endif
513 #if defined(CONFIG_ARCH_TEGRA_234_SOC)
514 extern const struct tegra_xusb_padctl_soc tegra234_xusb_padctl_soc;
515 #endif
516 
517 #endif /* __PHY_TEGRA_XUSB_H */
518