xref: /openbmc/linux/drivers/phy/tegra/xusb.h (revision 1c2dd16a) 
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 /* legacy entry points for backwards-compatibility */
23 int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
24 int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
25 
26 struct phy;
27 struct phy_provider;
28 struct platform_device;
29 struct regulator;
30 
31 /*
32  * lanes
33  */
34 struct tegra_xusb_lane_soc {
35 	const char *name;
36 
37 	unsigned int offset;
38 	unsigned int shift;
39 	unsigned int mask;
40 
41 	const char * const *funcs;
42 	unsigned int num_funcs;
43 };
44 
45 struct tegra_xusb_lane {
46 	const struct tegra_xusb_lane_soc *soc;
47 	struct tegra_xusb_pad *pad;
48 	struct device_node *np;
49 	struct list_head list;
50 	unsigned int function;
51 	unsigned int index;
52 };
53 
54 int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
55 			     struct device_node *np);
56 
57 struct tegra_xusb_usb2_lane {
58 	struct tegra_xusb_lane base;
59 
60 	u32 hs_curr_level_offset;
61 };
62 
63 static inline struct tegra_xusb_usb2_lane *
64 to_usb2_lane(struct tegra_xusb_lane *lane)
65 {
66 	return container_of(lane, struct tegra_xusb_usb2_lane, base);
67 }
68 
69 struct tegra_xusb_ulpi_lane {
70 	struct tegra_xusb_lane base;
71 };
72 
73 static inline struct tegra_xusb_ulpi_lane *
74 to_ulpi_lane(struct tegra_xusb_lane *lane)
75 {
76 	return container_of(lane, struct tegra_xusb_ulpi_lane, base);
77 }
78 
79 struct tegra_xusb_hsic_lane {
80 	struct tegra_xusb_lane base;
81 
82 	u32 strobe_trim;
83 	u32 rx_strobe_trim;
84 	u32 rx_data_trim;
85 	u32 tx_rtune_n;
86 	u32 tx_rtune_p;
87 	u32 tx_rslew_n;
88 	u32 tx_rslew_p;
89 	bool auto_term;
90 };
91 
92 static inline struct tegra_xusb_hsic_lane *
93 to_hsic_lane(struct tegra_xusb_lane *lane)
94 {
95 	return container_of(lane, struct tegra_xusb_hsic_lane, base);
96 }
97 
98 struct tegra_xusb_pcie_lane {
99 	struct tegra_xusb_lane base;
100 };
101 
102 static inline struct tegra_xusb_pcie_lane *
103 to_pcie_lane(struct tegra_xusb_lane *lane)
104 {
105 	return container_of(lane, struct tegra_xusb_pcie_lane, base);
106 }
107 
108 struct tegra_xusb_sata_lane {
109 	struct tegra_xusb_lane base;
110 };
111 
112 static inline struct tegra_xusb_sata_lane *
113 to_sata_lane(struct tegra_xusb_lane *lane)
114 {
115 	return container_of(lane, struct tegra_xusb_sata_lane, base);
116 }
117 
118 struct tegra_xusb_lane_ops {
119 	struct tegra_xusb_lane *(*probe)(struct tegra_xusb_pad *pad,
120 					 struct device_node *np,
121 					 unsigned int index);
122 	void (*remove)(struct tegra_xusb_lane *lane);
123 };
124 
125 /*
126  * pads
127  */
128 struct tegra_xusb_pad_soc;
129 struct tegra_xusb_padctl;
130 
131 struct tegra_xusb_pad_ops {
132 	struct tegra_xusb_pad *(*probe)(struct tegra_xusb_padctl *padctl,
133 					const struct tegra_xusb_pad_soc *soc,
134 					struct device_node *np);
135 	void (*remove)(struct tegra_xusb_pad *pad);
136 };
137 
138 struct tegra_xusb_pad_soc {
139 	const char *name;
140 
141 	const struct tegra_xusb_lane_soc *lanes;
142 	unsigned int num_lanes;
143 
144 	const struct tegra_xusb_pad_ops *ops;
145 };
146 
147 struct tegra_xusb_pad {
148 	const struct tegra_xusb_pad_soc *soc;
149 	struct tegra_xusb_padctl *padctl;
150 	struct phy_provider *provider;
151 	struct phy **lanes;
152 	struct device dev;
153 
154 	const struct tegra_xusb_lane_ops *ops;
155 
156 	struct list_head list;
157 };
158 
159 static inline struct tegra_xusb_pad *to_tegra_xusb_pad(struct device *dev)
160 {
161 	return container_of(dev, struct tegra_xusb_pad, dev);
162 }
163 
164 int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
165 			struct tegra_xusb_padctl *padctl,
166 			struct device_node *np);
167 int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
168 			    const struct phy_ops *ops);
169 void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad);
170 
171 struct tegra_xusb_usb2_pad {
172 	struct tegra_xusb_pad base;
173 
174 	struct clk *clk;
175 	unsigned int enable;
176 	struct mutex lock;
177 };
178 
179 static inline struct tegra_xusb_usb2_pad *
180 to_usb2_pad(struct tegra_xusb_pad *pad)
181 {
182 	return container_of(pad, struct tegra_xusb_usb2_pad, base);
183 }
184 
185 struct tegra_xusb_ulpi_pad {
186 	struct tegra_xusb_pad base;
187 };
188 
189 static inline struct tegra_xusb_ulpi_pad *
190 to_ulpi_pad(struct tegra_xusb_pad *pad)
191 {
192 	return container_of(pad, struct tegra_xusb_ulpi_pad, base);
193 }
194 
195 struct tegra_xusb_hsic_pad {
196 	struct tegra_xusb_pad base;
197 
198 	struct regulator *supply;
199 	struct clk *clk;
200 };
201 
202 static inline struct tegra_xusb_hsic_pad *
203 to_hsic_pad(struct tegra_xusb_pad *pad)
204 {
205 	return container_of(pad, struct tegra_xusb_hsic_pad, base);
206 }
207 
208 struct tegra_xusb_pcie_pad {
209 	struct tegra_xusb_pad base;
210 
211 	struct reset_control *rst;
212 	struct clk *pll;
213 
214 	unsigned int enable;
215 };
216 
217 static inline struct tegra_xusb_pcie_pad *
218 to_pcie_pad(struct tegra_xusb_pad *pad)
219 {
220 	return container_of(pad, struct tegra_xusb_pcie_pad, base);
221 }
222 
223 struct tegra_xusb_sata_pad {
224 	struct tegra_xusb_pad base;
225 
226 	struct reset_control *rst;
227 	struct clk *pll;
228 
229 	unsigned int enable;
230 };
231 
232 static inline struct tegra_xusb_sata_pad *
233 to_sata_pad(struct tegra_xusb_pad *pad)
234 {
235 	return container_of(pad, struct tegra_xusb_sata_pad, base);
236 }
237 
238 /*
239  * ports
240  */
241 struct tegra_xusb_port_ops;
242 
243 struct tegra_xusb_port {
244 	struct tegra_xusb_padctl *padctl;
245 	struct tegra_xusb_lane *lane;
246 	unsigned int index;
247 
248 	struct list_head list;
249 	struct device dev;
250 
251 	const struct tegra_xusb_port_ops *ops;
252 };
253 
254 struct tegra_xusb_lane_map {
255 	unsigned int port;
256 	const char *type;
257 	unsigned int index;
258 	const char *func;
259 };
260 
261 struct tegra_xusb_lane *
262 tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
263 			  const struct tegra_xusb_lane_map *map,
264 			  const char *function);
265 
266 struct tegra_xusb_port *
267 tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
268 		     unsigned int index);
269 
270 struct tegra_xusb_usb2_port {
271 	struct tegra_xusb_port base;
272 
273 	struct regulator *supply;
274 	bool internal;
275 };
276 
277 static inline struct tegra_xusb_usb2_port *
278 to_usb2_port(struct tegra_xusb_port *port)
279 {
280 	return container_of(port, struct tegra_xusb_usb2_port, base);
281 }
282 
283 struct tegra_xusb_usb2_port *
284 tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
285 			  unsigned int index);
286 
287 struct tegra_xusb_ulpi_port {
288 	struct tegra_xusb_port base;
289 
290 	struct regulator *supply;
291 	bool internal;
292 };
293 
294 static inline struct tegra_xusb_ulpi_port *
295 to_ulpi_port(struct tegra_xusb_port *port)
296 {
297 	return container_of(port, struct tegra_xusb_ulpi_port, base);
298 }
299 
300 struct tegra_xusb_hsic_port {
301 	struct tegra_xusb_port base;
302 };
303 
304 static inline struct tegra_xusb_hsic_port *
305 to_hsic_port(struct tegra_xusb_port *port)
306 {
307 	return container_of(port, struct tegra_xusb_hsic_port, base);
308 }
309 
310 struct tegra_xusb_usb3_port {
311 	struct tegra_xusb_port base;
312 	struct regulator *supply;
313 	bool context_saved;
314 	unsigned int port;
315 	bool internal;
316 
317 	u32 tap1;
318 	u32 amp;
319 	u32 ctle_z;
320 	u32 ctle_g;
321 };
322 
323 static inline struct tegra_xusb_usb3_port *
324 to_usb3_port(struct tegra_xusb_port *port)
325 {
326 	return container_of(port, struct tegra_xusb_usb3_port, base);
327 }
328 
329 struct tegra_xusb_usb3_port *
330 tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
331 			  unsigned int index);
332 
333 struct tegra_xusb_port_ops {
334 	int (*enable)(struct tegra_xusb_port *port);
335 	void (*disable)(struct tegra_xusb_port *port);
336 	struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
337 };
338 
339 /*
340  * pad controller
341  */
342 struct tegra_xusb_padctl_soc;
343 
344 struct tegra_xusb_padctl_ops {
345 	struct tegra_xusb_padctl *
346 		(*probe)(struct device *dev,
347 			 const struct tegra_xusb_padctl_soc *soc);
348 	void (*remove)(struct tegra_xusb_padctl *padctl);
349 
350 	int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
351 				 unsigned int index);
352 	int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
353 			     unsigned int index, bool idle);
354 	int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
355 				    unsigned int index, bool enable);
356 };
357 
358 struct tegra_xusb_padctl_soc {
359 	const struct tegra_xusb_pad_soc * const *pads;
360 	unsigned int num_pads;
361 
362 	struct {
363 		struct {
364 			const struct tegra_xusb_port_ops *ops;
365 			unsigned int count;
366 		} usb2, ulpi, hsic, usb3;
367 	} ports;
368 
369 	const struct tegra_xusb_padctl_ops *ops;
370 };
371 
372 struct tegra_xusb_padctl {
373 	struct device *dev;
374 	void __iomem *regs;
375 	struct mutex lock;
376 	struct reset_control *rst;
377 
378 	const struct tegra_xusb_padctl_soc *soc;
379 
380 	struct tegra_xusb_pad *pcie;
381 	struct tegra_xusb_pad *sata;
382 	struct tegra_xusb_pad *ulpi;
383 	struct tegra_xusb_pad *usb2;
384 	struct tegra_xusb_pad *hsic;
385 
386 	struct list_head ports;
387 	struct list_head lanes;
388 	struct list_head pads;
389 
390 	unsigned int enable;
391 
392 	struct clk *clk;
393 };
394 
395 static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
396 				 unsigned long offset)
397 {
398 	dev_dbg(padctl->dev, "%08lx < %08x\n", offset, value);
399 	writel(value, padctl->regs + offset);
400 }
401 
402 static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
403 			       unsigned long offset)
404 {
405 	u32 value = readl(padctl->regs + offset);
406 	dev_dbg(padctl->dev, "%08lx > %08x\n", offset, value);
407 	return value;
408 }
409 
410 struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
411 					     const char *name,
412 					     unsigned int index);
413 
414 #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
415 extern const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc;
416 #endif
417 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
418 extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
419 #endif
420 
421 #endif /* __PHY_TEGRA_XUSB_H */
422