Commit | Line | Data |
---|---|---|
72246da4 FB |
1 | /** |
2 | * dwc3-omap.c - OMAP Specific Glue layer | |
3 | * | |
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
72246da4 FB |
5 | * |
6 | * Authors: Felipe Balbi <balbi@ti.com>, | |
7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
8 | * | |
5945f789 FB |
9 | * This program is free software: you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 of | |
11 | * the License as published by the Free Software Foundation. | |
72246da4 | 12 | * |
5945f789 FB |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
72246da4 FB |
17 | */ |
18 | ||
a72e658b | 19 | #include <linux/module.h> |
72246da4 FB |
20 | #include <linux/kernel.h> |
21 | #include <linux/slab.h> | |
22 | #include <linux/interrupt.h> | |
72246da4 | 23 | #include <linux/platform_device.h> |
9962444f | 24 | #include <linux/platform_data/dwc3-omap.h> |
af310e96 | 25 | #include <linux/pm_runtime.h> |
72246da4 FB |
26 | #include <linux/dma-mapping.h> |
27 | #include <linux/ioport.h> | |
28 | #include <linux/io.h> | |
45b3cd4a | 29 | #include <linux/of.h> |
b4bfe6aa | 30 | #include <linux/of_platform.h> |
8061ad72 | 31 | #include <linux/extcon.h> |
8061ad72 | 32 | #include <linux/regulator/consumer.h> |
72246da4 | 33 | |
a418cc4e | 34 | #include <linux/usb/otg.h> |
a418cc4e | 35 | |
72246da4 FB |
36 | /* |
37 | * All these registers belong to OMAP's Wrapper around the | |
38 | * DesignWare USB3 Core. | |
39 | */ | |
40 | ||
41 | #define USBOTGSS_REVISION 0x0000 | |
42 | #define USBOTGSS_SYSCONFIG 0x0010 | |
43 | #define USBOTGSS_IRQ_EOI 0x0020 | |
ff7307b5 | 44 | #define USBOTGSS_EOI_OFFSET 0x0008 |
72246da4 FB |
45 | #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 |
46 | #define USBOTGSS_IRQSTATUS_0 0x0028 | |
47 | #define USBOTGSS_IRQENABLE_SET_0 0x002c | |
48 | #define USBOTGSS_IRQENABLE_CLR_0 0x0030 | |
ff7307b5 | 49 | #define USBOTGSS_IRQ0_OFFSET 0x0004 |
b1fd6cb5 GC |
50 | #define USBOTGSS_IRQSTATUS_RAW_1 0x0030 |
51 | #define USBOTGSS_IRQSTATUS_1 0x0034 | |
52 | #define USBOTGSS_IRQENABLE_SET_1 0x0038 | |
53 | #define USBOTGSS_IRQENABLE_CLR_1 0x003c | |
54 | #define USBOTGSS_IRQSTATUS_RAW_2 0x0040 | |
55 | #define USBOTGSS_IRQSTATUS_2 0x0044 | |
56 | #define USBOTGSS_IRQENABLE_SET_2 0x0048 | |
57 | #define USBOTGSS_IRQENABLE_CLR_2 0x004c | |
58 | #define USBOTGSS_IRQSTATUS_RAW_3 0x0050 | |
59 | #define USBOTGSS_IRQSTATUS_3 0x0054 | |
60 | #define USBOTGSS_IRQENABLE_SET_3 0x0058 | |
61 | #define USBOTGSS_IRQENABLE_CLR_3 0x005c | |
ff7307b5 GC |
62 | #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 |
63 | #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 | |
64 | #define USBOTGSS_IRQSTATUS_MISC 0x0038 | |
65 | #define USBOTGSS_IRQENABLE_SET_MISC 0x003c | |
66 | #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 | |
67 | #define USBOTGSS_IRQMISC_OFFSET 0x03fc | |
22832190 BL |
68 | #define USBOTGSS_UTMI_OTG_STATUS 0x0080 |
69 | #define USBOTGSS_UTMI_OTG_CTRL 0x0084 | |
ff7307b5 GC |
70 | #define USBOTGSS_UTMI_OTG_OFFSET 0x0480 |
71 | #define USBOTGSS_TXFIFO_DEPTH 0x0508 | |
72 | #define USBOTGSS_RXFIFO_DEPTH 0x050c | |
72246da4 FB |
73 | #define USBOTGSS_MMRAM_OFFSET 0x0100 |
74 | #define USBOTGSS_FLADJ 0x0104 | |
75 | #define USBOTGSS_DEBUG_CFG 0x0108 | |
76 | #define USBOTGSS_DEBUG_DATA 0x010c | |
ff7307b5 GC |
77 | #define USBOTGSS_DEV_EBC_EN 0x0110 |
78 | #define USBOTGSS_DEBUG_OFFSET 0x0600 | |
72246da4 FB |
79 | |
80 | /* SYSCONFIG REGISTER */ | |
81 | #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) | |
4b5faa7a | 82 | |
72246da4 FB |
83 | /* IRQ_EOI REGISTER */ |
84 | #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) | |
85 | ||
86 | /* IRQS0 BITS */ | |
87 | #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0) | |
88 | ||
b1fd6cb5 GC |
89 | /* IRQMISC BITS */ |
90 | #define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17) | |
91 | #define USBOTGSS_IRQMISC_OEVT (1 << 16) | |
92 | #define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13) | |
93 | #define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12) | |
94 | #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11) | |
95 | #define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8) | |
96 | #define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5) | |
97 | #define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4) | |
98 | #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3) | |
99 | #define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0) | |
72246da4 | 100 | |
72246da4 | 101 | /* UTMI_OTG_STATUS REGISTER */ |
22832190 BL |
102 | #define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS (1 << 5) |
103 | #define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS (1 << 4) | |
104 | #define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS (1 << 3) | |
105 | #define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP (1 << 0) | |
106 | ||
107 | /* UTMI_OTG_CTRL REGISTER */ | |
108 | #define USBOTGSS_UTMI_OTG_CTRL_SW_MODE (1 << 31) | |
109 | #define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT (1 << 9) | |
110 | #define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE (1 << 8) | |
111 | #define USBOTGSS_UTMI_OTG_CTRL_IDDIG (1 << 4) | |
112 | #define USBOTGSS_UTMI_OTG_CTRL_SESSEND (1 << 3) | |
113 | #define USBOTGSS_UTMI_OTG_CTRL_SESSVALID (1 << 2) | |
114 | #define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID (1 << 1) | |
72246da4 FB |
115 | |
116 | struct dwc3_omap { | |
72246da4 FB |
117 | struct device *dev; |
118 | ||
119 | int irq; | |
120 | void __iomem *base; | |
121 | ||
22832190 | 122 | u32 utmi_otg_ctrl; |
1e2a064c GC |
123 | u32 utmi_otg_offset; |
124 | u32 irqmisc_offset; | |
125 | u32 irq_eoi_offset; | |
126 | u32 debug_offset; | |
127 | u32 irq0_offset; | |
f3e117f4 | 128 | |
5960387a | 129 | struct extcon_dev *edev; |
8061ad72 KVA |
130 | struct notifier_block vbus_nb; |
131 | struct notifier_block id_nb; | |
132 | ||
133 | struct regulator *vbus_reg; | |
72246da4 FB |
134 | }; |
135 | ||
8061ad72 KVA |
136 | enum omap_dwc3_vbus_id_status { |
137 | OMAP_DWC3_ID_FLOAT, | |
138 | OMAP_DWC3_ID_GROUND, | |
139 | OMAP_DWC3_VBUS_OFF, | |
140 | OMAP_DWC3_VBUS_VALID, | |
141 | }; | |
7e41bba9 | 142 | |
ab5e59db IS |
143 | static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) |
144 | { | |
145 | return readl(base + offset); | |
146 | } | |
147 | ||
148 | static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) | |
149 | { | |
150 | writel(value, base + offset); | |
151 | } | |
152 | ||
22832190 | 153 | static u32 dwc3_omap_read_utmi_ctrl(struct dwc3_omap *omap) |
b1fd6cb5 | 154 | { |
22832190 | 155 | return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL + |
b1fd6cb5 GC |
156 | omap->utmi_otg_offset); |
157 | } | |
158 | ||
22832190 | 159 | static void dwc3_omap_write_utmi_ctrl(struct dwc3_omap *omap, u32 value) |
b1fd6cb5 | 160 | { |
22832190 | 161 | dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL + |
b1fd6cb5 GC |
162 | omap->utmi_otg_offset, value); |
163 | ||
164 | } | |
165 | ||
166 | static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap) | |
167 | { | |
168 | return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 - | |
169 | omap->irq0_offset); | |
170 | } | |
171 | ||
172 | static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value) | |
173 | { | |
174 | dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 - | |
175 | omap->irq0_offset, value); | |
176 | ||
177 | } | |
178 | ||
179 | static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap) | |
180 | { | |
181 | return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC + | |
182 | omap->irqmisc_offset); | |
183 | } | |
184 | ||
185 | static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value) | |
186 | { | |
187 | dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC + | |
188 | omap->irqmisc_offset, value); | |
189 | ||
190 | } | |
191 | ||
192 | static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value) | |
193 | { | |
194 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC + | |
195 | omap->irqmisc_offset, value); | |
196 | ||
197 | } | |
198 | ||
199 | static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value) | |
200 | { | |
201 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 - | |
202 | omap->irq0_offset, value); | |
203 | } | |
204 | ||
96e5d312 GC |
205 | static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value) |
206 | { | |
207 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC + | |
208 | omap->irqmisc_offset, value); | |
209 | } | |
210 | ||
211 | static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value) | |
212 | { | |
213 | dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 - | |
214 | omap->irq0_offset, value); | |
215 | } | |
216 | ||
8061ad72 KVA |
217 | static void dwc3_omap_set_mailbox(struct dwc3_omap *omap, |
218 | enum omap_dwc3_vbus_id_status status) | |
7e41bba9 | 219 | { |
8061ad72 KVA |
220 | int ret; |
221 | u32 val; | |
2ba7943a | 222 | |
7e41bba9 KVA |
223 | switch (status) { |
224 | case OMAP_DWC3_ID_GROUND: | |
8061ad72 KVA |
225 | if (omap->vbus_reg) { |
226 | ret = regulator_enable(omap->vbus_reg); | |
227 | if (ret) { | |
e4f75667 | 228 | dev_err(omap->dev, "regulator enable failed\n"); |
8061ad72 KVA |
229 | return; |
230 | } | |
231 | } | |
232 | ||
22832190 BL |
233 | val = dwc3_omap_read_utmi_ctrl(omap); |
234 | val &= ~(USBOTGSS_UTMI_OTG_CTRL_IDDIG | |
235 | | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID | |
236 | | USBOTGSS_UTMI_OTG_CTRL_SESSEND); | |
237 | val |= USBOTGSS_UTMI_OTG_CTRL_SESSVALID | |
238 | | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT; | |
239 | dwc3_omap_write_utmi_ctrl(omap, val); | |
7e41bba9 KVA |
240 | break; |
241 | ||
242 | case OMAP_DWC3_VBUS_VALID: | |
22832190 BL |
243 | val = dwc3_omap_read_utmi_ctrl(omap); |
244 | val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND; | |
245 | val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG | |
246 | | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID | |
247 | | USBOTGSS_UTMI_OTG_CTRL_SESSVALID | |
248 | | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT; | |
249 | dwc3_omap_write_utmi_ctrl(omap, val); | |
7e41bba9 KVA |
250 | break; |
251 | ||
252 | case OMAP_DWC3_ID_FLOAT: | |
8061ad72 KVA |
253 | if (omap->vbus_reg) |
254 | regulator_disable(omap->vbus_reg); | |
255 | ||
7e41bba9 | 256 | case OMAP_DWC3_VBUS_OFF: |
22832190 BL |
257 | val = dwc3_omap_read_utmi_ctrl(omap); |
258 | val &= ~(USBOTGSS_UTMI_OTG_CTRL_SESSVALID | |
259 | | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID | |
260 | | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT); | |
261 | val |= USBOTGSS_UTMI_OTG_CTRL_SESSEND | |
262 | | USBOTGSS_UTMI_OTG_CTRL_IDDIG; | |
263 | dwc3_omap_write_utmi_ctrl(omap, val); | |
7e41bba9 KVA |
264 | break; |
265 | ||
266 | default: | |
e4f75667 | 267 | dev_WARN(omap->dev, "invalid state\n"); |
7e41bba9 | 268 | } |
7e41bba9 | 269 | } |
7e41bba9 | 270 | |
72246da4 FB |
271 | static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) |
272 | { | |
273 | struct dwc3_omap *omap = _omap; | |
274 | u32 reg; | |
72246da4 | 275 | |
b1fd6cb5 | 276 | reg = dwc3_omap_read_irqmisc_status(omap); |
72246da4 | 277 | |
b1fd6cb5 GC |
278 | dwc3_omap_write_irqmisc_status(omap, reg); |
279 | ||
280 | reg = dwc3_omap_read_irq0_status(omap); | |
42077b0a | 281 | |
b1fd6cb5 | 282 | dwc3_omap_write_irq0_status(omap, reg); |
72246da4 | 283 | |
72246da4 FB |
284 | return IRQ_HANDLED; |
285 | } | |
286 | ||
9a4b5dab FB |
287 | static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) |
288 | { | |
289 | u32 reg; | |
290 | ||
291 | /* enable all IRQs */ | |
292 | reg = USBOTGSS_IRQO_COREIRQ_ST; | |
b1fd6cb5 GC |
293 | dwc3_omap_write_irq0_set(omap, reg); |
294 | ||
295 | reg = (USBOTGSS_IRQMISC_OEVT | | |
296 | USBOTGSS_IRQMISC_DRVVBUS_RISE | | |
297 | USBOTGSS_IRQMISC_CHRGVBUS_RISE | | |
298 | USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | | |
299 | USBOTGSS_IRQMISC_IDPULLUP_RISE | | |
300 | USBOTGSS_IRQMISC_DRVVBUS_FALL | | |
301 | USBOTGSS_IRQMISC_CHRGVBUS_FALL | | |
302 | USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | | |
303 | USBOTGSS_IRQMISC_IDPULLUP_FALL); | |
304 | ||
305 | dwc3_omap_write_irqmisc_set(omap, reg); | |
9a4b5dab FB |
306 | } |
307 | ||
308 | static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) | |
309 | { | |
96e5d312 GC |
310 | u32 reg; |
311 | ||
9a4b5dab | 312 | /* disable all IRQs */ |
96e5d312 GC |
313 | reg = USBOTGSS_IRQO_COREIRQ_ST; |
314 | dwc3_omap_write_irq0_clr(omap, reg); | |
315 | ||
316 | reg = (USBOTGSS_IRQMISC_OEVT | | |
317 | USBOTGSS_IRQMISC_DRVVBUS_RISE | | |
318 | USBOTGSS_IRQMISC_CHRGVBUS_RISE | | |
319 | USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | | |
320 | USBOTGSS_IRQMISC_IDPULLUP_RISE | | |
321 | USBOTGSS_IRQMISC_DRVVBUS_FALL | | |
322 | USBOTGSS_IRQMISC_CHRGVBUS_FALL | | |
323 | USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | | |
324 | USBOTGSS_IRQMISC_IDPULLUP_FALL); | |
325 | ||
326 | dwc3_omap_write_irqmisc_clr(omap, reg); | |
9a4b5dab FB |
327 | } |
328 | ||
8061ad72 KVA |
329 | static int dwc3_omap_id_notifier(struct notifier_block *nb, |
330 | unsigned long event, void *ptr) | |
331 | { | |
332 | struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb); | |
333 | ||
334 | if (event) | |
335 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); | |
336 | else | |
337 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); | |
338 | ||
339 | return NOTIFY_DONE; | |
340 | } | |
341 | ||
342 | static int dwc3_omap_vbus_notifier(struct notifier_block *nb, | |
343 | unsigned long event, void *ptr) | |
344 | { | |
345 | struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb); | |
346 | ||
347 | if (event) | |
348 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); | |
349 | else | |
350 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); | |
351 | ||
352 | return NOTIFY_DONE; | |
353 | } | |
354 | ||
30fef1a9 GC |
355 | static void dwc3_omap_map_offset(struct dwc3_omap *omap) |
356 | { | |
357 | struct device_node *node = omap->dev->of_node; | |
358 | ||
359 | /* | |
360 | * Differentiate between OMAP5 and AM437x. | |
361 | * | |
362 | * For OMAP5(ES2.0) and AM437x wrapper revision is same, even | |
363 | * though there are changes in wrapper register offsets. | |
364 | * | |
365 | * Using dt compatible to differentiate AM437x. | |
366 | */ | |
367 | if (of_device_is_compatible(node, "ti,am437x-dwc3")) { | |
368 | omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; | |
369 | omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; | |
370 | omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; | |
371 | omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; | |
372 | omap->debug_offset = USBOTGSS_DEBUG_OFFSET; | |
373 | } | |
374 | } | |
375 | ||
d2f0cf89 GC |
376 | static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) |
377 | { | |
378 | u32 reg; | |
379 | struct device_node *node = omap->dev->of_node; | |
380 | int utmi_mode = 0; | |
381 | ||
22832190 | 382 | reg = dwc3_omap_read_utmi_ctrl(omap); |
d2f0cf89 GC |
383 | |
384 | of_property_read_u32(node, "utmi-mode", &utmi_mode); | |
385 | ||
386 | switch (utmi_mode) { | |
387 | case DWC3_OMAP_UTMI_MODE_SW: | |
22832190 | 388 | reg |= USBOTGSS_UTMI_OTG_CTRL_SW_MODE; |
d2f0cf89 GC |
389 | break; |
390 | case DWC3_OMAP_UTMI_MODE_HW: | |
22832190 | 391 | reg &= ~USBOTGSS_UTMI_OTG_CTRL_SW_MODE; |
d2f0cf89 GC |
392 | break; |
393 | default: | |
e4f75667 | 394 | dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode); |
d2f0cf89 GC |
395 | } |
396 | ||
22832190 | 397 | dwc3_omap_write_utmi_ctrl(omap, reg); |
d2f0cf89 GC |
398 | } |
399 | ||
025b431b GC |
400 | static int dwc3_omap_extcon_register(struct dwc3_omap *omap) |
401 | { | |
788b0bc4 | 402 | int ret; |
025b431b GC |
403 | struct device_node *node = omap->dev->of_node; |
404 | struct extcon_dev *edev; | |
405 | ||
406 | if (of_property_read_bool(node, "extcon")) { | |
407 | edev = extcon_get_edev_by_phandle(omap->dev, 0); | |
408 | if (IS_ERR(edev)) { | |
409 | dev_vdbg(omap->dev, "couldn't get extcon device\n"); | |
410 | return -EPROBE_DEFER; | |
411 | } | |
412 | ||
413 | omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; | |
5960387a CC |
414 | ret = extcon_register_notifier(edev, EXTCON_USB, |
415 | &omap->vbus_nb); | |
025b431b GC |
416 | if (ret < 0) |
417 | dev_vdbg(omap->dev, "failed to register notifier for USB\n"); | |
418 | ||
419 | omap->id_nb.notifier_call = dwc3_omap_id_notifier; | |
5960387a CC |
420 | ret = extcon_register_notifier(edev, EXTCON_USB_HOST, |
421 | &omap->id_nb); | |
025b431b GC |
422 | if (ret < 0) |
423 | dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n"); | |
424 | ||
5960387a | 425 | if (extcon_get_cable_state_(edev, EXTCON_USB) == true) |
025b431b | 426 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); |
5960387a | 427 | if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == true) |
025b431b | 428 | dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); |
5960387a CC |
429 | |
430 | omap->edev = edev; | |
025b431b GC |
431 | } |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
41ac7b3a | 436 | static int dwc3_omap_probe(struct platform_device *pdev) |
72246da4 | 437 | { |
45b3cd4a FB |
438 | struct device_node *node = pdev->dev.of_node; |
439 | ||
72246da4 FB |
440 | struct dwc3_omap *omap; |
441 | struct resource *res; | |
802ca850 | 442 | struct device *dev = &pdev->dev; |
8061ad72 | 443 | struct regulator *vbus_reg = NULL; |
72246da4 | 444 | |
b09e99ee | 445 | int ret; |
72246da4 FB |
446 | int irq; |
447 | ||
448 | u32 reg; | |
449 | ||
450 | void __iomem *base; | |
72246da4 | 451 | |
4495afcf KVA |
452 | if (!node) { |
453 | dev_err(dev, "device node not found\n"); | |
454 | return -EINVAL; | |
455 | } | |
456 | ||
802ca850 | 457 | omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); |
734d5a53 | 458 | if (!omap) |
802ca850 | 459 | return -ENOMEM; |
72246da4 FB |
460 | |
461 | platform_set_drvdata(pdev, omap); | |
462 | ||
e36a0c87 | 463 | irq = platform_get_irq(pdev, 0); |
72246da4 | 464 | if (irq < 0) { |
802ca850 CP |
465 | dev_err(dev, "missing IRQ resource\n"); |
466 | return -EINVAL; | |
72246da4 FB |
467 | } |
468 | ||
e36a0c87 | 469 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
8bbcd17d FB |
470 | base = devm_ioremap_resource(dev, res); |
471 | if (IS_ERR(base)) | |
472 | return PTR_ERR(base); | |
72246da4 | 473 | |
8061ad72 KVA |
474 | if (of_property_read_bool(node, "vbus-supply")) { |
475 | vbus_reg = devm_regulator_get(dev, "vbus"); | |
476 | if (IS_ERR(vbus_reg)) { | |
477 | dev_err(dev, "vbus init failed\n"); | |
478 | return PTR_ERR(vbus_reg); | |
479 | } | |
480 | } | |
481 | ||
802ca850 | 482 | omap->dev = dev; |
72246da4 FB |
483 | omap->irq = irq; |
484 | omap->base = base; | |
8061ad72 | 485 | omap->vbus_reg = vbus_reg; |
72246da4 | 486 | |
af310e96 KVA |
487 | pm_runtime_enable(dev); |
488 | ret = pm_runtime_get_sync(dev); | |
489 | if (ret < 0) { | |
490 | dev_err(dev, "get_sync failed with err %d\n", ret); | |
45d49cb7 | 491 | goto err1; |
af310e96 KVA |
492 | } |
493 | ||
30fef1a9 | 494 | dwc3_omap_map_offset(omap); |
d2f0cf89 | 495 | dwc3_omap_set_utmi_mode(omap); |
9962444f | 496 | |
72246da4 | 497 | /* check the DMA Status */ |
ab5e59db | 498 | reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); |
72246da4 | 499 | |
802ca850 | 500 | ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0, |
dd17a6b2 | 501 | "dwc3-omap", omap); |
72246da4 | 502 | if (ret) { |
802ca850 | 503 | dev_err(dev, "failed to request IRQ #%d --> %d\n", |
72246da4 | 504 | omap->irq, ret); |
594daba1 | 505 | goto err1; |
72246da4 FB |
506 | } |
507 | ||
025b431b GC |
508 | ret = dwc3_omap_extcon_register(omap); |
509 | if (ret < 0) | |
45d49cb7 | 510 | goto err1; |
8061ad72 | 511 | |
4495afcf KVA |
512 | ret = of_platform_populate(node, NULL, NULL, dev); |
513 | if (ret) { | |
514 | dev_err(&pdev->dev, "failed to create dwc3 core\n"); | |
45d49cb7 | 515 | goto err2; |
72246da4 FB |
516 | } |
517 | ||
e2ae0692 FB |
518 | dwc3_omap_enable_irqs(omap); |
519 | ||
72246da4 | 520 | return 0; |
594daba1 | 521 | |
45d49cb7 | 522 | err2: |
5960387a CC |
523 | extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb); |
524 | extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb); | |
594daba1 KVA |
525 | |
526 | err1: | |
527 | pm_runtime_put_sync(dev); | |
594daba1 KVA |
528 | pm_runtime_disable(dev); |
529 | ||
530 | return ret; | |
72246da4 FB |
531 | } |
532 | ||
fb4e98ab | 533 | static int dwc3_omap_remove(struct platform_device *pdev) |
72246da4 | 534 | { |
9a4b5dab FB |
535 | struct dwc3_omap *omap = platform_get_drvdata(pdev); |
536 | ||
5960387a CC |
537 | extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb); |
538 | extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb); | |
9a4b5dab | 539 | dwc3_omap_disable_irqs(omap); |
3d0184d0 | 540 | of_platform_depopulate(omap->dev); |
af310e96 KVA |
541 | pm_runtime_put_sync(&pdev->dev); |
542 | pm_runtime_disable(&pdev->dev); | |
94c6a436 | 543 | |
72246da4 FB |
544 | return 0; |
545 | } | |
546 | ||
2c2dc89c | 547 | static const struct of_device_id of_dwc3_match[] = { |
72246da4 | 548 | { |
e36a0c87 | 549 | .compatible = "ti,dwc3" |
72246da4 | 550 | }, |
ff7307b5 GC |
551 | { |
552 | .compatible = "ti,am437x-dwc3" | |
553 | }, | |
72246da4 FB |
554 | { }, |
555 | }; | |
2c2dc89c | 556 | MODULE_DEVICE_TABLE(of, of_dwc3_match); |
72246da4 | 557 | |
19fda7cd | 558 | #ifdef CONFIG_PM_SLEEP |
f3e117f4 FB |
559 | static int dwc3_omap_suspend(struct device *dev) |
560 | { | |
561 | struct dwc3_omap *omap = dev_get_drvdata(dev); | |
562 | ||
22832190 | 563 | omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap); |
7ee2566f | 564 | dwc3_omap_disable_irqs(omap); |
f3e117f4 FB |
565 | |
566 | return 0; | |
567 | } | |
568 | ||
569 | static int dwc3_omap_resume(struct device *dev) | |
570 | { | |
571 | struct dwc3_omap *omap = dev_get_drvdata(dev); | |
572 | ||
22832190 | 573 | dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl); |
7ee2566f | 574 | dwc3_omap_enable_irqs(omap); |
f3e117f4 FB |
575 | |
576 | pm_runtime_disable(dev); | |
577 | pm_runtime_set_active(dev); | |
578 | pm_runtime_enable(dev); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static const struct dev_pm_ops dwc3_omap_dev_pm_ops = { | |
f3e117f4 FB |
584 | |
585 | SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume) | |
586 | }; | |
587 | ||
588 | #define DEV_PM_OPS (&dwc3_omap_dev_pm_ops) | |
589 | #else | |
590 | #define DEV_PM_OPS NULL | |
19fda7cd | 591 | #endif /* CONFIG_PM_SLEEP */ |
f3e117f4 | 592 | |
72246da4 FB |
593 | static struct platform_driver dwc3_omap_driver = { |
594 | .probe = dwc3_omap_probe, | |
7690417d | 595 | .remove = dwc3_omap_remove, |
72246da4 FB |
596 | .driver = { |
597 | .name = "omap-dwc3", | |
2c2dc89c | 598 | .of_match_table = of_dwc3_match, |
f3e117f4 | 599 | .pm = DEV_PM_OPS, |
72246da4 FB |
600 | }, |
601 | }; | |
602 | ||
cc27c96c AL |
603 | module_platform_driver(dwc3_omap_driver); |
604 | ||
7ae4fc4d | 605 | MODULE_ALIAS("platform:omap-dwc3"); |
72246da4 | 606 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
5945f789 | 607 | MODULE_LICENSE("GPL v2"); |
72246da4 | 608 | MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer"); |