xref: /openbmc/linux/drivers/phy/tegra/xusb.h (revision 178aa03b) 
1 /*
2  * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
3  * Copyright (c) 2015, Google Inc.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms and conditions of the GNU General Public License,
7  * version 2, as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12  * more details.
13  */
14 
15 #ifndef __PHY_TEGRA_XUSB_H
16 #define __PHY_TEGRA_XUSB_H
17 
18 #include <linux/io.h>
19 #include <linux/mutex.h>
20 #include <linux/workqueue.h>
21 
22 #include <linux/usb/otg.h>
23 
24 /* legacy entry points for backwards-compatibility */
25 int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
26 int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
27 
28 struct phy;
29 struct phy_provider;
30 struct platform_device;
31 struct regulator;
32 
33 /*
34  * lanes
35  */
36 struct tegra_xusb_lane_soc {
37 	const char *name;
38 
39 	unsigned int offset;
40 	unsigned int shift;
41 	unsigned int mask;
42 
43 	const char * const *funcs;
44 	unsigned int num_funcs;
45 };
46 
47 struct tegra_xusb_lane {
48 	const struct tegra_xusb_lane_soc *soc;
49 	struct tegra_xusb_pad *pad;
50 	struct device_node *np;
51 	struct list_head list;
52 	unsigned int function;
53 	unsigned int index;
54 };
55 
56 int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
57 			     struct device_node *np);
58 
59 struct tegra_xusb_usb3_lane {
60 	struct tegra_xusb_lane base;
61 };
62 
63 static inline struct tegra_xusb_usb3_lane *
64 to_usb3_lane(struct tegra_xusb_lane *lane)
65 {
66 	return container_of(lane, struct tegra_xusb_usb3_lane, base);
67 }
68 
69 struct tegra_xusb_usb2_lane {
70 	struct tegra_xusb_lane base;
71 
72 	u32 hs_curr_level_offset;
73 	bool powered_on;
74 };
75 
76 static inline struct tegra_xusb_usb2_lane *
77 to_usb2_lane(struct tegra_xusb_lane *lane)
78 {
79 	return container_of(lane, struct tegra_xusb_usb2_lane, base);
80 }
81 
82 struct tegra_xusb_ulpi_lane {
83 	struct tegra_xusb_lane base;
84 };
85 
86 static inline struct tegra_xusb_ulpi_lane *
87 to_ulpi_lane(struct tegra_xusb_lane *lane)
88 {
89 	return container_of(lane, struct tegra_xusb_ulpi_lane, base);
90 }
91 
92 struct tegra_xusb_hsic_lane {
93 	struct tegra_xusb_lane base;
94 
95 	u32 strobe_trim;
96 	u32 rx_strobe_trim;
97 	u32 rx_data_trim;
98 	u32 tx_rtune_n;
99 	u32 tx_rtune_p;
100 	u32 tx_rslew_n;
101 	u32 tx_rslew_p;
102 	bool auto_term;
103 };
104 
105 static inline struct tegra_xusb_hsic_lane *
106 to_hsic_lane(struct tegra_xusb_lane *lane)
107 {
108 	return container_of(lane, struct tegra_xusb_hsic_lane, base);
109 }
110 
111 struct tegra_xusb_pcie_lane {
112 	struct tegra_xusb_lane base;
113 };
114 
115 static inline struct tegra_xusb_pcie_lane *
116 to_pcie_lane(struct tegra_xusb_lane *lane)
117 {
118 	return container_of(lane, struct tegra_xusb_pcie_lane, base);
119 }
120 
121 struct tegra_xusb_sata_lane {
122 	struct tegra_xusb_lane base;
123 };
124 
125 static inline struct tegra_xusb_sata_lane *
126 to_sata_lane(struct tegra_xusb_lane *lane)
127 {
128 	return container_of(lane, struct tegra_xusb_sata_lane, base);
129 }
130 
131 struct tegra_xusb_lane_ops {
132 	struct tegra_xusb_lane *(*probe)(struct tegra_xusb_pad *pad,
133 					 struct device_node *np,
134 					 unsigned int index);
135 	void (*remove)(struct tegra_xusb_lane *lane);
136 };
137 
138 /*
139  * pads
140  */
141 struct tegra_xusb_pad_soc;
142 struct tegra_xusb_padctl;
143 
144 struct tegra_xusb_pad_ops {
145 	struct tegra_xusb_pad *(*probe)(struct tegra_xusb_padctl *padctl,
146 					const struct tegra_xusb_pad_soc *soc,
147 					struct device_node *np);
148 	void (*remove)(struct tegra_xusb_pad *pad);
149 };
150 
151 struct tegra_xusb_pad_soc {
152 	const char *name;
153 
154 	const struct tegra_xusb_lane_soc *lanes;
155 	unsigned int num_lanes;
156 
157 	const struct tegra_xusb_pad_ops *ops;
158 };
159 
160 struct tegra_xusb_pad {
161 	const struct tegra_xusb_pad_soc *soc;
162 	struct tegra_xusb_padctl *padctl;
163 	struct phy_provider *provider;
164 	struct phy **lanes;
165 	struct device dev;
166 
167 	const struct tegra_xusb_lane_ops *ops;
168 
169 	struct list_head list;
170 };
171 
172 static inline struct tegra_xusb_pad *to_tegra_xusb_pad(struct device *dev)
173 {
174 	return container_of(dev, struct tegra_xusb_pad, dev);
175 }
176 
177 int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
178 			struct tegra_xusb_padctl *padctl,
179 			struct device_node *np);
180 int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
181 			    const struct phy_ops *ops);
182 void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad);
183 
184 struct tegra_xusb_usb3_pad {
185 	struct tegra_xusb_pad base;
186 
187 	unsigned int enable;
188 	struct mutex lock;
189 };
190 
191 static inline struct tegra_xusb_usb3_pad *
192 to_usb3_pad(struct tegra_xusb_pad *pad)
193 {
194 	return container_of(pad, struct tegra_xusb_usb3_pad, base);
195 }
196 
197 struct tegra_xusb_usb2_pad {
198 	struct tegra_xusb_pad base;
199 
200 	struct clk *clk;
201 	unsigned int enable;
202 	struct mutex lock;
203 };
204 
205 static inline struct tegra_xusb_usb2_pad *
206 to_usb2_pad(struct tegra_xusb_pad *pad)
207 {
208 	return container_of(pad, struct tegra_xusb_usb2_pad, base);
209 }
210 
211 struct tegra_xusb_ulpi_pad {
212 	struct tegra_xusb_pad base;
213 };
214 
215 static inline struct tegra_xusb_ulpi_pad *
216 to_ulpi_pad(struct tegra_xusb_pad *pad)
217 {
218 	return container_of(pad, struct tegra_xusb_ulpi_pad, base);
219 }
220 
221 struct tegra_xusb_hsic_pad {
222 	struct tegra_xusb_pad base;
223 
224 	struct regulator *supply;
225 	struct clk *clk;
226 };
227 
228 static inline struct tegra_xusb_hsic_pad *
229 to_hsic_pad(struct tegra_xusb_pad *pad)
230 {
231 	return container_of(pad, struct tegra_xusb_hsic_pad, base);
232 }
233 
234 struct tegra_xusb_pcie_pad {
235 	struct tegra_xusb_pad base;
236 
237 	struct reset_control *rst;
238 	struct clk *pll;
239 
240 	unsigned int enable;
241 };
242 
243 static inline struct tegra_xusb_pcie_pad *
244 to_pcie_pad(struct tegra_xusb_pad *pad)
245 {
246 	return container_of(pad, struct tegra_xusb_pcie_pad, base);
247 }
248 
249 struct tegra_xusb_sata_pad {
250 	struct tegra_xusb_pad base;
251 
252 	struct reset_control *rst;
253 	struct clk *pll;
254 
255 	unsigned int enable;
256 };
257 
258 static inline struct tegra_xusb_sata_pad *
259 to_sata_pad(struct tegra_xusb_pad *pad)
260 {
261 	return container_of(pad, struct tegra_xusb_sata_pad, base);
262 }
263 
264 /*
265  * ports
266  */
267 struct tegra_xusb_port_ops;
268 
269 struct tegra_xusb_port {
270 	struct tegra_xusb_padctl *padctl;
271 	struct tegra_xusb_lane *lane;
272 	unsigned int index;
273 
274 	struct list_head list;
275 	struct device dev;
276 
277 	const struct tegra_xusb_port_ops *ops;
278 };
279 
280 struct tegra_xusb_lane_map {
281 	unsigned int port;
282 	const char *type;
283 	unsigned int index;
284 	const char *func;
285 };
286 
287 struct tegra_xusb_lane *
288 tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
289 			  const struct tegra_xusb_lane_map *map,
290 			  const char *function);
291 
292 struct tegra_xusb_port *
293 tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
294 		     unsigned int index);
295 
296 struct tegra_xusb_usb2_port {
297 	struct tegra_xusb_port base;
298 
299 	struct regulator *supply;
300 	enum usb_dr_mode mode;
301 	bool internal;
302 };
303 
304 static inline struct tegra_xusb_usb2_port *
305 to_usb2_port(struct tegra_xusb_port *port)
306 {
307 	return container_of(port, struct tegra_xusb_usb2_port, base);
308 }
309 
310 struct tegra_xusb_usb2_port *
311 tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
312 			  unsigned int index);
313 
314 struct tegra_xusb_ulpi_port {
315 	struct tegra_xusb_port base;
316 
317 	struct regulator *supply;
318 	bool internal;
319 };
320 
321 static inline struct tegra_xusb_ulpi_port *
322 to_ulpi_port(struct tegra_xusb_port *port)
323 {
324 	return container_of(port, struct tegra_xusb_ulpi_port, base);
325 }
326 
327 struct tegra_xusb_hsic_port {
328 	struct tegra_xusb_port base;
329 };
330 
331 static inline struct tegra_xusb_hsic_port *
332 to_hsic_port(struct tegra_xusb_port *port)
333 {
334 	return container_of(port, struct tegra_xusb_hsic_port, base);
335 }
336 
337 struct tegra_xusb_usb3_port {
338 	struct tegra_xusb_port base;
339 	struct regulator *supply;
340 	bool context_saved;
341 	unsigned int port;
342 	bool internal;
343 
344 	u32 tap1;
345 	u32 amp;
346 	u32 ctle_z;
347 	u32 ctle_g;
348 };
349 
350 static inline struct tegra_xusb_usb3_port *
351 to_usb3_port(struct tegra_xusb_port *port)
352 {
353 	return container_of(port, struct tegra_xusb_usb3_port, base);
354 }
355 
356 struct tegra_xusb_usb3_port *
357 tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
358 			  unsigned int index);
359 
360 struct tegra_xusb_port_ops {
361 	int (*enable)(struct tegra_xusb_port *port);
362 	void (*disable)(struct tegra_xusb_port *port);
363 	struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
364 };
365 
366 /*
367  * pad controller
368  */
369 struct tegra_xusb_padctl_soc;
370 
371 struct tegra_xusb_padctl_ops {
372 	struct tegra_xusb_padctl *
373 		(*probe)(struct device *dev,
374 			 const struct tegra_xusb_padctl_soc *soc);
375 	void (*remove)(struct tegra_xusb_padctl *padctl);
376 
377 	int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
378 				 unsigned int index);
379 	int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
380 			     unsigned int index, bool idle);
381 	int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
382 				    unsigned int index, bool enable);
383 };
384 
385 struct tegra_xusb_padctl_soc {
386 	const struct tegra_xusb_pad_soc * const *pads;
387 	unsigned int num_pads;
388 
389 	struct {
390 		struct {
391 			const struct tegra_xusb_port_ops *ops;
392 			unsigned int count;
393 		} usb2, ulpi, hsic, usb3;
394 	} ports;
395 
396 	const struct tegra_xusb_padctl_ops *ops;
397 
398 	const char * const *supply_names;
399 	unsigned int num_supplies;
400 };
401 
402 struct tegra_xusb_padctl {
403 	struct device *dev;
404 	void __iomem *regs;
405 	struct mutex lock;
406 	struct reset_control *rst;
407 
408 	const struct tegra_xusb_padctl_soc *soc;
409 
410 	struct tegra_xusb_pad *pcie;
411 	struct tegra_xusb_pad *sata;
412 	struct tegra_xusb_pad *ulpi;
413 	struct tegra_xusb_pad *usb2;
414 	struct tegra_xusb_pad *hsic;
415 
416 	struct list_head ports;
417 	struct list_head lanes;
418 	struct list_head pads;
419 
420 	unsigned int enable;
421 
422 	struct clk *clk;
423 
424 	struct regulator_bulk_data *supplies;
425 };
426 
427 static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
428 				 unsigned long offset)
429 {
430 	dev_dbg(padctl->dev, "%08lx < %08x\n", offset, value);
431 	writel(value, padctl->regs + offset);
432 }
433 
434 static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
435 			       unsigned long offset)
436 {
437 	u32 value = readl(padctl->regs + offset);
438 	dev_dbg(padctl->dev, "%08lx > %08x\n", offset, value);
439 	return value;
440 }
441 
442 struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
443 					     const char *name,
444 					     unsigned int index);
445 
446 #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
447 extern const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc;
448 #endif
449 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
450 extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
451 #endif
452 #if defined(CONFIG_ARCH_TEGRA_186_SOC)
453 extern const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc;
454 #endif
455 
456 #endif /* __PHY_TEGRA_XUSB_H */
457