Commit | Line | Data |
---|---|---|
5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
cbdc0f54 | 2 | /* |
72246da4 FB |
3 | * core.c - DesignWare USB3 DRD Controller Core file |
4 | * | |
10623b87 | 5 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com |
72246da4 FB |
6 | * |
7 | * Authors: Felipe Balbi <balbi@ti.com>, | |
8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
72246da4 FB |
9 | */ |
10 | ||
fe8abf33 | 11 | #include <linux/clk.h> |
fa0ea13e | 12 | #include <linux/version.h> |
a72e658b | 13 | #include <linux/module.h> |
72246da4 FB |
14 | #include <linux/kernel.h> |
15 | #include <linux/slab.h> | |
16 | #include <linux/spinlock.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/pm_runtime.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/io.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/dma-mapping.h> | |
457e84b6 | 25 | #include <linux/of.h> |
d182c2e1 | 26 | #include <linux/of_graph.h> |
404905a6 | 27 | #include <linux/acpi.h> |
6344475f | 28 | #include <linux/pinctrl/consumer.h> |
fe8abf33 | 29 | #include <linux/reset.h> |
7bee3188 | 30 | #include <linux/bitfield.h> |
72246da4 FB |
31 | |
32 | #include <linux/usb/ch9.h> | |
33 | #include <linux/usb/gadget.h> | |
f7e846f0 | 34 | #include <linux/usb/of.h> |
a45c82b8 | 35 | #include <linux/usb/otg.h> |
72246da4 FB |
36 | |
37 | #include "core.h" | |
38 | #include "gadget.h" | |
39 | #include "io.h" | |
40 | ||
41 | #include "debug.h" | |
42 | ||
fc8bb91b | 43 | #define DWC3_DEFAULT_AUTOSUSPEND_DELAY 5000 /* ms */ |
8300dd23 | 44 | |
9d6173e1 TN |
45 | /** |
46 | * dwc3_get_dr_mode - Validates and sets dr_mode | |
47 | * @dwc: pointer to our context structure | |
48 | */ | |
49 | static int dwc3_get_dr_mode(struct dwc3 *dwc) | |
50 | { | |
51 | enum usb_dr_mode mode; | |
52 | struct device *dev = dwc->dev; | |
53 | unsigned int hw_mode; | |
54 | ||
55 | if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) | |
56 | dwc->dr_mode = USB_DR_MODE_OTG; | |
57 | ||
58 | mode = dwc->dr_mode; | |
59 | hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0); | |
60 | ||
61 | switch (hw_mode) { | |
62 | case DWC3_GHWPARAMS0_MODE_GADGET: | |
63 | if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) { | |
64 | dev_err(dev, | |
65 | "Controller does not support host mode.\n"); | |
66 | return -EINVAL; | |
67 | } | |
68 | mode = USB_DR_MODE_PERIPHERAL; | |
69 | break; | |
70 | case DWC3_GHWPARAMS0_MODE_HOST: | |
71 | if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { | |
72 | dev_err(dev, | |
73 | "Controller does not support device mode.\n"); | |
74 | return -EINVAL; | |
75 | } | |
76 | mode = USB_DR_MODE_HOST; | |
77 | break; | |
78 | default: | |
79 | if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) | |
80 | mode = USB_DR_MODE_HOST; | |
81 | else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) | |
82 | mode = USB_DR_MODE_PERIPHERAL; | |
a7700468 TN |
83 | |
84 | /* | |
89a9cc47 TN |
85 | * DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG |
86 | * mode. If the controller supports DRD but the dr_mode is not | |
87 | * specified or set to OTG, then set the mode to peripheral. | |
a7700468 | 88 | */ |
d182c2e1 | 89 | if (mode == USB_DR_MODE_OTG && !dwc->edev && |
8bb14308 TN |
90 | (!IS_ENABLED(CONFIG_USB_ROLE_SWITCH) || |
91 | !device_property_read_bool(dwc->dev, "usb-role-switch")) && | |
9af21dd6 | 92 | !DWC3_VER_IS_PRIOR(DWC3, 330A)) |
a7700468 | 93 | mode = USB_DR_MODE_PERIPHERAL; |
9d6173e1 TN |
94 | } |
95 | ||
96 | if (mode != dwc->dr_mode) { | |
97 | dev_warn(dev, | |
98 | "Configuration mismatch. dr_mode forced to %s\n", | |
99 | mode == USB_DR_MODE_HOST ? "host" : "gadget"); | |
100 | ||
101 | dwc->dr_mode = mode; | |
102 | } | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
f09cc79b | 107 | void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) |
3140e8cb SAS |
108 | { |
109 | u32 reg; | |
110 | ||
111 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
112 | reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); | |
113 | reg |= DWC3_GCTL_PRTCAPDIR(mode); | |
114 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); | |
c4a5153e MG |
115 | |
116 | dwc->current_dr_role = mode; | |
41ce1456 RQ |
117 | } |
118 | ||
119 | static void __dwc3_set_mode(struct work_struct *work) | |
120 | { | |
121 | struct dwc3 *dwc = work_to_dwc(work); | |
122 | unsigned long flags; | |
123 | int ret; | |
f580170f | 124 | u32 reg; |
62c73bfe | 125 | u32 desired_dr_role; |
41ce1456 | 126 | |
f88359e1 | 127 | mutex_lock(&dwc->mutex); |
62c73bfe SP |
128 | spin_lock_irqsave(&dwc->lock, flags); |
129 | desired_dr_role = dwc->desired_dr_role; | |
130 | spin_unlock_irqrestore(&dwc->lock, flags); | |
f88359e1 | 131 | |
c2cd3452 MK |
132 | pm_runtime_get_sync(dwc->dev); |
133 | ||
f09cc79b RQ |
134 | if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_OTG) |
135 | dwc3_otg_update(dwc, 0); | |
136 | ||
62c73bfe | 137 | if (!desired_dr_role) |
c2cd3452 | 138 | goto out; |
41ce1456 | 139 | |
62c73bfe | 140 | if (desired_dr_role == dwc->current_dr_role) |
c2cd3452 | 141 | goto out; |
41ce1456 | 142 | |
62c73bfe | 143 | if (desired_dr_role == DWC3_GCTL_PRTCAP_OTG && dwc->edev) |
c2cd3452 | 144 | goto out; |
41ce1456 RQ |
145 | |
146 | switch (dwc->current_dr_role) { | |
147 | case DWC3_GCTL_PRTCAP_HOST: | |
148 | dwc3_host_exit(dwc); | |
149 | break; | |
150 | case DWC3_GCTL_PRTCAP_DEVICE: | |
151 | dwc3_gadget_exit(dwc); | |
152 | dwc3_event_buffers_cleanup(dwc); | |
153 | break; | |
f09cc79b RQ |
154 | case DWC3_GCTL_PRTCAP_OTG: |
155 | dwc3_otg_exit(dwc); | |
156 | spin_lock_irqsave(&dwc->lock, flags); | |
157 | dwc->desired_otg_role = DWC3_OTG_ROLE_IDLE; | |
158 | spin_unlock_irqrestore(&dwc->lock, flags); | |
159 | dwc3_otg_update(dwc, 1); | |
160 | break; | |
41ce1456 RQ |
161 | default: |
162 | break; | |
163 | } | |
164 | ||
07903626 RK |
165 | /* |
166 | * When current_dr_role is not set, there's no role switching. | |
167 | * Only perform GCTL.CoreSoftReset when there's DRD role switching. | |
168 | */ | |
169 | if (dwc->current_dr_role && ((DWC3_IP_IS(DWC3) || | |
170 | DWC3_VER_IS_PRIOR(DWC31, 190A)) && | |
62c73bfe | 171 | desired_dr_role != DWC3_GCTL_PRTCAP_OTG)) { |
f88359e1 YC |
172 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); |
173 | reg |= DWC3_GCTL_CORESOFTRESET; | |
174 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); | |
175 | ||
176 | /* | |
177 | * Wait for internal clocks to synchronized. DWC_usb31 and | |
178 | * DWC_usb32 may need at least 50ms (less for DWC_usb3). To | |
179 | * keep it consistent across different IPs, let's wait up to | |
180 | * 100ms before clearing GCTL.CORESOFTRESET. | |
181 | */ | |
182 | msleep(100); | |
183 | ||
184 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
185 | reg &= ~DWC3_GCTL_CORESOFTRESET; | |
186 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); | |
187 | } | |
188 | ||
41ce1456 RQ |
189 | spin_lock_irqsave(&dwc->lock, flags); |
190 | ||
62c73bfe | 191 | dwc3_set_prtcap(dwc, desired_dr_role); |
6b3261a2 | 192 | |
41ce1456 RQ |
193 | spin_unlock_irqrestore(&dwc->lock, flags); |
194 | ||
62c73bfe | 195 | switch (desired_dr_role) { |
41ce1456 RQ |
196 | case DWC3_GCTL_PRTCAP_HOST: |
197 | ret = dwc3_host_init(dwc); | |
958d1a4c | 198 | if (ret) { |
41ce1456 | 199 | dev_err(dwc->dev, "failed to initialize host\n"); |
958d1a4c FB |
200 | } else { |
201 | if (dwc->usb2_phy) | |
202 | otg_set_vbus(dwc->usb2_phy->otg, true); | |
644cbbc3 MG |
203 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); |
204 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST); | |
f580170f YC |
205 | if (dwc->dis_split_quirk) { |
206 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL3); | |
207 | reg |= DWC3_GUCTL3_SPLITDISABLE; | |
208 | dwc3_writel(dwc->regs, DWC3_GUCTL3, reg); | |
209 | } | |
958d1a4c | 210 | } |
41ce1456 RQ |
211 | break; |
212 | case DWC3_GCTL_PRTCAP_DEVICE: | |
f88359e1 YC |
213 | dwc3_core_soft_reset(dwc); |
214 | ||
41ce1456 | 215 | dwc3_event_buffers_setup(dwc); |
958d1a4c FB |
216 | |
217 | if (dwc->usb2_phy) | |
218 | otg_set_vbus(dwc->usb2_phy->otg, false); | |
644cbbc3 MG |
219 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); |
220 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE); | |
958d1a4c | 221 | |
41ce1456 RQ |
222 | ret = dwc3_gadget_init(dwc); |
223 | if (ret) | |
224 | dev_err(dwc->dev, "failed to initialize peripheral\n"); | |
225 | break; | |
f09cc79b RQ |
226 | case DWC3_GCTL_PRTCAP_OTG: |
227 | dwc3_otg_init(dwc); | |
228 | dwc3_otg_update(dwc, 0); | |
229 | break; | |
41ce1456 RQ |
230 | default: |
231 | break; | |
232 | } | |
f09cc79b | 233 | |
c2cd3452 MK |
234 | out: |
235 | pm_runtime_mark_last_busy(dwc->dev); | |
236 | pm_runtime_put_autosuspend(dwc->dev); | |
f88359e1 | 237 | mutex_unlock(&dwc->mutex); |
41ce1456 RQ |
238 | } |
239 | ||
240 | void dwc3_set_mode(struct dwc3 *dwc, u32 mode) | |
241 | { | |
242 | unsigned long flags; | |
243 | ||
dc336b19 LJ |
244 | if (dwc->dr_mode != USB_DR_MODE_OTG) |
245 | return; | |
246 | ||
41ce1456 RQ |
247 | spin_lock_irqsave(&dwc->lock, flags); |
248 | dwc->desired_dr_role = mode; | |
249 | spin_unlock_irqrestore(&dwc->lock, flags); | |
250 | ||
084a804e | 251 | queue_work(system_freezable_wq, &dwc->drd_work); |
3140e8cb | 252 | } |
8300dd23 | 253 | |
cf6d867d FB |
254 | u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type) |
255 | { | |
256 | struct dwc3 *dwc = dep->dwc; | |
257 | u32 reg; | |
258 | ||
259 | dwc3_writel(dwc->regs, DWC3_GDBGFIFOSPACE, | |
260 | DWC3_GDBGFIFOSPACE_NUM(dep->number) | | |
261 | DWC3_GDBGFIFOSPACE_TYPE(type)); | |
262 | ||
263 | reg = dwc3_readl(dwc->regs, DWC3_GDBGFIFOSPACE); | |
264 | ||
265 | return DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(reg); | |
266 | } | |
267 | ||
72246da4 FB |
268 | /** |
269 | * dwc3_core_soft_reset - Issues core soft reset and PHY reset | |
270 | * @dwc: pointer to our context structure | |
271 | */ | |
0066472d | 272 | int dwc3_core_soft_reset(struct dwc3 *dwc) |
72246da4 FB |
273 | { |
274 | u32 reg; | |
f59dcab1 | 275 | int retries = 1000; |
72246da4 | 276 | |
f59dcab1 FB |
277 | /* |
278 | * We're resetting only the device side because, if we're in host mode, | |
279 | * XHCI driver will reset the host block. If dwc3 was configured for | |
280 | * host-only mode, then we can return early. | |
281 | */ | |
c4a5153e | 282 | if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST) |
f59dcab1 | 283 | return 0; |
72246da4 | 284 | |
f59dcab1 FB |
285 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
286 | reg |= DWC3_DCTL_CSFTRST; | |
f4fd84ae TN |
287 | reg &= ~DWC3_DCTL_RUN_STOP; |
288 | dwc3_gadget_dctl_write_safe(dwc, reg); | |
72246da4 | 289 | |
4749e0e6 TN |
290 | /* |
291 | * For DWC_usb31 controller 1.90a and later, the DCTL.CSFRST bit | |
292 | * is cleared only after all the clocks are synchronized. This can | |
293 | * take a little more than 50ms. Set the polling rate at 20ms | |
294 | * for 10 times instead. | |
295 | */ | |
9af21dd6 | 296 | if (DWC3_VER_IS_WITHIN(DWC31, 190A, ANY) || DWC3_IP_IS(DWC32)) |
4749e0e6 TN |
297 | retries = 10; |
298 | ||
f59dcab1 FB |
299 | do { |
300 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
301 | if (!(reg & DWC3_DCTL_CSFTRST)) | |
fab38333 | 302 | goto done; |
45627ac6 | 303 | |
9af21dd6 | 304 | if (DWC3_VER_IS_WITHIN(DWC31, 190A, ANY) || DWC3_IP_IS(DWC32)) |
4749e0e6 TN |
305 | msleep(20); |
306 | else | |
307 | udelay(1); | |
f59dcab1 | 308 | } while (--retries); |
57303488 | 309 | |
859bdc35 | 310 | dev_warn(dwc->dev, "DWC3 controller soft reset failed.\n"); |
f59dcab1 | 311 | return -ETIMEDOUT; |
fab38333 TN |
312 | |
313 | done: | |
314 | /* | |
4749e0e6 TN |
315 | * For DWC_usb31 controller 1.80a and prior, once DCTL.CSFRST bit |
316 | * is cleared, we must wait at least 50ms before accessing the PHY | |
317 | * domain (synchronization delay). | |
fab38333 | 318 | */ |
9af21dd6 | 319 | if (DWC3_VER_IS_WITHIN(DWC31, ANY, 180A)) |
fab38333 TN |
320 | msleep(50); |
321 | ||
322 | return 0; | |
72246da4 FB |
323 | } |
324 | ||
db2be4e9 NB |
325 | /* |
326 | * dwc3_frame_length_adjustment - Adjusts frame length if required | |
327 | * @dwc3: Pointer to our controller context structure | |
db2be4e9 | 328 | */ |
bcdb3272 | 329 | static void dwc3_frame_length_adjustment(struct dwc3 *dwc) |
db2be4e9 NB |
330 | { |
331 | u32 reg; | |
332 | u32 dft; | |
333 | ||
9af21dd6 | 334 | if (DWC3_VER_IS_PRIOR(DWC3, 250A)) |
db2be4e9 NB |
335 | return; |
336 | ||
bcdb3272 | 337 | if (dwc->fladj == 0) |
db2be4e9 NB |
338 | return; |
339 | ||
340 | reg = dwc3_readl(dwc->regs, DWC3_GFLADJ); | |
341 | dft = reg & DWC3_GFLADJ_30MHZ_MASK; | |
a7d9874c | 342 | if (dft != dwc->fladj) { |
db2be4e9 | 343 | reg &= ~DWC3_GFLADJ_30MHZ_MASK; |
bcdb3272 | 344 | reg |= DWC3_GFLADJ_30MHZ_SDBND_SEL | dwc->fladj; |
db2be4e9 NB |
345 | dwc3_writel(dwc->regs, DWC3_GFLADJ, reg); |
346 | } | |
347 | } | |
348 | ||
7bee3188 BP |
349 | /** |
350 | * dwc3_ref_clk_period - Reference clock period configuration | |
351 | * Default reference clock period depends on hardware | |
352 | * configuration. For systems with reference clock that differs | |
353 | * from the default, this will set clock period in DWC3_GUCTL | |
354 | * register. | |
355 | * @dwc: Pointer to our controller context structure | |
7bee3188 BP |
356 | */ |
357 | static void dwc3_ref_clk_period(struct dwc3 *dwc) | |
358 | { | |
5114c3ee | 359 | unsigned long period; |
596c8785 SA |
360 | unsigned long fladj; |
361 | unsigned long decr; | |
5114c3ee | 362 | unsigned long rate; |
7bee3188 BP |
363 | u32 reg; |
364 | ||
5114c3ee SA |
365 | if (dwc->ref_clk) { |
366 | rate = clk_get_rate(dwc->ref_clk); | |
367 | if (!rate) | |
368 | return; | |
369 | period = NSEC_PER_SEC / rate; | |
370 | } else if (dwc->ref_clk_per) { | |
371 | period = dwc->ref_clk_per; | |
596c8785 | 372 | rate = NSEC_PER_SEC / period; |
5114c3ee | 373 | } else { |
7bee3188 | 374 | return; |
5114c3ee | 375 | } |
7bee3188 BP |
376 | |
377 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL); | |
378 | reg &= ~DWC3_GUCTL_REFCLKPER_MASK; | |
5114c3ee | 379 | reg |= FIELD_PREP(DWC3_GUCTL_REFCLKPER_MASK, period); |
7bee3188 | 380 | dwc3_writel(dwc->regs, DWC3_GUCTL, reg); |
7bee3188 | 381 | |
596c8785 SA |
382 | if (DWC3_VER_IS_PRIOR(DWC3, 250A)) |
383 | return; | |
384 | ||
385 | /* | |
386 | * The calculation below is | |
387 | * | |
388 | * 125000 * (NSEC_PER_SEC / (rate * period) - 1) | |
389 | * | |
390 | * but rearranged for fixed-point arithmetic. The division must be | |
391 | * 64-bit because 125000 * NSEC_PER_SEC doesn't fit in 32 bits (and | |
392 | * neither does rate * period). | |
393 | * | |
394 | * Note that rate * period ~= NSEC_PER_SECOND, minus the number of | |
395 | * nanoseconds of error caused by the truncation which happened during | |
396 | * the division when calculating rate or period (whichever one was | |
397 | * derived from the other). We first calculate the relative error, then | |
398 | * scale it to units of 8 ppm. | |
399 | */ | |
400 | fladj = div64_u64(125000ULL * NSEC_PER_SEC, (u64)rate * period); | |
401 | fladj -= 125000; | |
402 | ||
403 | /* | |
404 | * The documented 240MHz constant is scaled by 2 to get PLS1 as well. | |
405 | */ | |
406 | decr = 480000000 / rate; | |
407 | ||
408 | reg = dwc3_readl(dwc->regs, DWC3_GFLADJ); | |
409 | reg &= ~DWC3_GFLADJ_REFCLK_FLADJ_MASK | |
410 | & ~DWC3_GFLADJ_240MHZDECR | |
411 | & ~DWC3_GFLADJ_240MHZDECR_PLS1; | |
412 | reg |= FIELD_PREP(DWC3_GFLADJ_REFCLK_FLADJ_MASK, fladj) | |
413 | | FIELD_PREP(DWC3_GFLADJ_240MHZDECR, decr >> 1) | |
414 | | FIELD_PREP(DWC3_GFLADJ_240MHZDECR_PLS1, decr & 1); | |
a6fc2f1b AS |
415 | |
416 | if (dwc->gfladj_refclk_lpm_sel) | |
417 | reg |= DWC3_GFLADJ_REFCLK_LPM_SEL; | |
418 | ||
596c8785 SA |
419 | dwc3_writel(dwc->regs, DWC3_GFLADJ, reg); |
420 | } | |
7bee3188 | 421 | |
72246da4 FB |
422 | /** |
423 | * dwc3_free_one_event_buffer - Frees one event buffer | |
424 | * @dwc: Pointer to our controller context structure | |
425 | * @evt: Pointer to event buffer to be freed | |
426 | */ | |
427 | static void dwc3_free_one_event_buffer(struct dwc3 *dwc, | |
428 | struct dwc3_event_buffer *evt) | |
429 | { | |
d64ff406 | 430 | dma_free_coherent(dwc->sysdev, evt->length, evt->buf, evt->dma); |
72246da4 FB |
431 | } |
432 | ||
433 | /** | |
1d046793 | 434 | * dwc3_alloc_one_event_buffer - Allocates one event buffer structure |
72246da4 FB |
435 | * @dwc: Pointer to our controller context structure |
436 | * @length: size of the event buffer | |
437 | * | |
1d046793 | 438 | * Returns a pointer to the allocated event buffer structure on success |
72246da4 FB |
439 | * otherwise ERR_PTR(errno). |
440 | */ | |
67d0b500 | 441 | static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, |
ca80ca61 | 442 | unsigned int length) |
72246da4 FB |
443 | { |
444 | struct dwc3_event_buffer *evt; | |
445 | ||
380f0d28 | 446 | evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL); |
72246da4 FB |
447 | if (!evt) |
448 | return ERR_PTR(-ENOMEM); | |
449 | ||
450 | evt->dwc = dwc; | |
451 | evt->length = length; | |
d9fa4c63 JY |
452 | evt->cache = devm_kzalloc(dwc->dev, length, GFP_KERNEL); |
453 | if (!evt->cache) | |
454 | return ERR_PTR(-ENOMEM); | |
455 | ||
d64ff406 | 456 | evt->buf = dma_alloc_coherent(dwc->sysdev, length, |
72246da4 | 457 | &evt->dma, GFP_KERNEL); |
e32672f0 | 458 | if (!evt->buf) |
72246da4 | 459 | return ERR_PTR(-ENOMEM); |
72246da4 FB |
460 | |
461 | return evt; | |
462 | } | |
463 | ||
464 | /** | |
465 | * dwc3_free_event_buffers - frees all allocated event buffers | |
466 | * @dwc: Pointer to our controller context structure | |
467 | */ | |
468 | static void dwc3_free_event_buffers(struct dwc3 *dwc) | |
469 | { | |
470 | struct dwc3_event_buffer *evt; | |
72246da4 | 471 | |
696c8b12 | 472 | evt = dwc->ev_buf; |
660e9bde FB |
473 | if (evt) |
474 | dwc3_free_one_event_buffer(dwc, evt); | |
72246da4 FB |
475 | } |
476 | ||
477 | /** | |
478 | * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length | |
1d046793 | 479 | * @dwc: pointer to our controller context structure |
72246da4 FB |
480 | * @length: size of event buffer |
481 | * | |
1d046793 | 482 | * Returns 0 on success otherwise negative errno. In the error case, dwc |
72246da4 FB |
483 | * may contain some buffers allocated but not all which were requested. |
484 | */ | |
ca80ca61 | 485 | static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned int length) |
72246da4 | 486 | { |
660e9bde | 487 | struct dwc3_event_buffer *evt; |
72246da4 | 488 | |
660e9bde FB |
489 | evt = dwc3_alloc_one_event_buffer(dwc, length); |
490 | if (IS_ERR(evt)) { | |
491 | dev_err(dwc->dev, "can't allocate event buffer\n"); | |
492 | return PTR_ERR(evt); | |
72246da4 | 493 | } |
696c8b12 | 494 | dwc->ev_buf = evt; |
72246da4 FB |
495 | |
496 | return 0; | |
497 | } | |
498 | ||
499 | /** | |
500 | * dwc3_event_buffers_setup - setup our allocated event buffers | |
1d046793 | 501 | * @dwc: pointer to our controller context structure |
72246da4 FB |
502 | * |
503 | * Returns 0 on success otherwise negative errno. | |
504 | */ | |
f09cc79b | 505 | int dwc3_event_buffers_setup(struct dwc3 *dwc) |
72246da4 FB |
506 | { |
507 | struct dwc3_event_buffer *evt; | |
72246da4 | 508 | |
696c8b12 | 509 | evt = dwc->ev_buf; |
660e9bde | 510 | evt->lpos = 0; |
660e9bde FB |
511 | dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(0), |
512 | lower_32_bits(evt->dma)); | |
513 | dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(0), | |
514 | upper_32_bits(evt->dma)); | |
515 | dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), | |
516 | DWC3_GEVNTSIZ_SIZE(evt->length)); | |
517 | dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 0); | |
72246da4 FB |
518 | |
519 | return 0; | |
520 | } | |
521 | ||
f09cc79b | 522 | void dwc3_event_buffers_cleanup(struct dwc3 *dwc) |
72246da4 FB |
523 | { |
524 | struct dwc3_event_buffer *evt; | |
72246da4 | 525 | |
696c8b12 | 526 | evt = dwc->ev_buf; |
7acd85e0 | 527 | |
660e9bde | 528 | evt->lpos = 0; |
7acd85e0 | 529 | |
660e9bde FB |
530 | dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(0), 0); |
531 | dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(0), 0); | |
532 | dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), DWC3_GEVNTSIZ_INTMASK | |
533 | | DWC3_GEVNTSIZ_SIZE(0)); | |
534 | dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 0); | |
72246da4 FB |
535 | } |
536 | ||
0ffcaf37 FB |
537 | static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc) |
538 | { | |
539 | if (!dwc->has_hibernation) | |
540 | return 0; | |
541 | ||
542 | if (!dwc->nr_scratch) | |
543 | return 0; | |
544 | ||
545 | dwc->scratchbuf = kmalloc_array(dwc->nr_scratch, | |
546 | DWC3_SCRATCHBUF_SIZE, GFP_KERNEL); | |
547 | if (!dwc->scratchbuf) | |
548 | return -ENOMEM; | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int dwc3_setup_scratch_buffers(struct dwc3 *dwc) | |
554 | { | |
555 | dma_addr_t scratch_addr; | |
556 | u32 param; | |
557 | int ret; | |
558 | ||
559 | if (!dwc->has_hibernation) | |
560 | return 0; | |
561 | ||
562 | if (!dwc->nr_scratch) | |
563 | return 0; | |
564 | ||
565 | /* should never fall here */ | |
566 | if (!WARN_ON(dwc->scratchbuf)) | |
567 | return 0; | |
568 | ||
d64ff406 | 569 | scratch_addr = dma_map_single(dwc->sysdev, dwc->scratchbuf, |
0ffcaf37 FB |
570 | dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE, |
571 | DMA_BIDIRECTIONAL); | |
d64ff406 AB |
572 | if (dma_mapping_error(dwc->sysdev, scratch_addr)) { |
573 | dev_err(dwc->sysdev, "failed to map scratch buffer\n"); | |
0ffcaf37 FB |
574 | ret = -EFAULT; |
575 | goto err0; | |
576 | } | |
577 | ||
578 | dwc->scratch_addr = scratch_addr; | |
579 | ||
580 | param = lower_32_bits(scratch_addr); | |
581 | ||
582 | ret = dwc3_send_gadget_generic_command(dwc, | |
583 | DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param); | |
584 | if (ret < 0) | |
585 | goto err1; | |
586 | ||
587 | param = upper_32_bits(scratch_addr); | |
588 | ||
589 | ret = dwc3_send_gadget_generic_command(dwc, | |
590 | DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param); | |
591 | if (ret < 0) | |
592 | goto err1; | |
593 | ||
594 | return 0; | |
595 | ||
596 | err1: | |
d64ff406 | 597 | dma_unmap_single(dwc->sysdev, dwc->scratch_addr, dwc->nr_scratch * |
0ffcaf37 FB |
598 | DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); |
599 | ||
600 | err0: | |
601 | return ret; | |
602 | } | |
603 | ||
604 | static void dwc3_free_scratch_buffers(struct dwc3 *dwc) | |
605 | { | |
606 | if (!dwc->has_hibernation) | |
607 | return; | |
608 | ||
609 | if (!dwc->nr_scratch) | |
610 | return; | |
611 | ||
612 | /* should never fall here */ | |
613 | if (!WARN_ON(dwc->scratchbuf)) | |
614 | return; | |
615 | ||
d64ff406 | 616 | dma_unmap_single(dwc->sysdev, dwc->scratch_addr, dwc->nr_scratch * |
0ffcaf37 FB |
617 | DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); |
618 | kfree(dwc->scratchbuf); | |
619 | } | |
620 | ||
789451f6 FB |
621 | static void dwc3_core_num_eps(struct dwc3 *dwc) |
622 | { | |
623 | struct dwc3_hwparams *parms = &dwc->hwparams; | |
624 | ||
47d3946e | 625 | dwc->num_eps = DWC3_NUM_EPS(parms); |
789451f6 FB |
626 | } |
627 | ||
41ac7b3a | 628 | static void dwc3_cache_hwparams(struct dwc3 *dwc) |
26ceca97 FB |
629 | { |
630 | struct dwc3_hwparams *parms = &dwc->hwparams; | |
631 | ||
632 | parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0); | |
633 | parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1); | |
634 | parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2); | |
635 | parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3); | |
636 | parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4); | |
637 | parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5); | |
638 | parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6); | |
639 | parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7); | |
640 | parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8); | |
16710380 TN |
641 | |
642 | if (DWC3_IP_IS(DWC32)) | |
643 | parms->hwparams9 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS9); | |
26ceca97 FB |
644 | } |
645 | ||
98112041 RQ |
646 | static int dwc3_core_ulpi_init(struct dwc3 *dwc) |
647 | { | |
648 | int intf; | |
649 | int ret = 0; | |
650 | ||
651 | intf = DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3); | |
652 | ||
653 | if (intf == DWC3_GHWPARAMS3_HSPHY_IFC_ULPI || | |
654 | (intf == DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI && | |
655 | dwc->hsphy_interface && | |
656 | !strncmp(dwc->hsphy_interface, "ulpi", 4))) | |
657 | ret = dwc3_ulpi_init(dwc); | |
658 | ||
659 | return ret; | |
660 | } | |
661 | ||
b5a65c40 HR |
662 | /** |
663 | * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core | |
664 | * @dwc: Pointer to our controller context structure | |
88bc9d19 HK |
665 | * |
666 | * Returns 0 on success. The USB PHY interfaces are configured but not | |
667 | * initialized. The PHY interfaces and the PHYs get initialized together with | |
668 | * the core in dwc3_core_init. | |
b5a65c40 | 669 | */ |
88bc9d19 | 670 | static int dwc3_phy_setup(struct dwc3 *dwc) |
b5a65c40 | 671 | { |
9ba3aca8 | 672 | unsigned int hw_mode; |
b5a65c40 HR |
673 | u32 reg; |
674 | ||
9ba3aca8 TN |
675 | hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0); |
676 | ||
b5a65c40 HR |
677 | reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); |
678 | ||
1966b865 FB |
679 | /* |
680 | * Make sure UX_EXIT_PX is cleared as that causes issues with some | |
681 | * PHYs. Also, this bit is not supposed to be used in normal operation. | |
682 | */ | |
683 | reg &= ~DWC3_GUSB3PIPECTL_UX_EXIT_PX; | |
684 | ||
2164a476 HR |
685 | /* |
686 | * Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY | |
687 | * to '0' during coreConsultant configuration. So default value | |
688 | * will be '0' when the core is reset. Application needs to set it | |
689 | * to '1' after the core initialization is completed. | |
690 | */ | |
9af21dd6 | 691 | if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) |
2164a476 HR |
692 | reg |= DWC3_GUSB3PIPECTL_SUSPHY; |
693 | ||
9ba3aca8 TN |
694 | /* |
695 | * For DRD controllers, GUSB3PIPECTL.SUSPENDENABLE must be cleared after | |
696 | * power-on reset, and it can be set after core initialization, which is | |
697 | * after device soft-reset during initialization. | |
698 | */ | |
699 | if (hw_mode == DWC3_GHWPARAMS0_MODE_DRD) | |
700 | reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; | |
701 | ||
b5a65c40 HR |
702 | if (dwc->u2ss_inp3_quirk) |
703 | reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK; | |
704 | ||
e58dd357 RB |
705 | if (dwc->dis_rxdet_inp3_quirk) |
706 | reg |= DWC3_GUSB3PIPECTL_DISRXDETINP3; | |
707 | ||
df31f5b3 HR |
708 | if (dwc->req_p1p2p3_quirk) |
709 | reg |= DWC3_GUSB3PIPECTL_REQP1P2P3; | |
710 | ||
a2a1d0f5 HR |
711 | if (dwc->del_p1p2p3_quirk) |
712 | reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN; | |
713 | ||
41c06ffd HR |
714 | if (dwc->del_phy_power_chg_quirk) |
715 | reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE; | |
716 | ||
fb67afca HR |
717 | if (dwc->lfps_filter_quirk) |
718 | reg |= DWC3_GUSB3PIPECTL_LFPSFILT; | |
719 | ||
14f4ac53 HR |
720 | if (dwc->rx_detect_poll_quirk) |
721 | reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL; | |
722 | ||
6b6a0c9a HR |
723 | if (dwc->tx_de_emphasis_quirk) |
724 | reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(dwc->tx_de_emphasis); | |
725 | ||
cd72f890 | 726 | if (dwc->dis_u3_susphy_quirk) |
59acfa20 HR |
727 | reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; |
728 | ||
00fe081d WW |
729 | if (dwc->dis_del_phy_power_chg_quirk) |
730 | reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE; | |
731 | ||
b5a65c40 HR |
732 | dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); |
733 | ||
2164a476 HR |
734 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); |
735 | ||
3e10a2ce HK |
736 | /* Select the HS PHY interface */ |
737 | switch (DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3)) { | |
738 | case DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI: | |
43cacb03 FB |
739 | if (dwc->hsphy_interface && |
740 | !strncmp(dwc->hsphy_interface, "utmi", 4)) { | |
3e10a2ce | 741 | reg &= ~DWC3_GUSB2PHYCFG_ULPI_UTMI; |
88bc9d19 | 742 | break; |
43cacb03 FB |
743 | } else if (dwc->hsphy_interface && |
744 | !strncmp(dwc->hsphy_interface, "ulpi", 4)) { | |
3e10a2ce | 745 | reg |= DWC3_GUSB2PHYCFG_ULPI_UTMI; |
88bc9d19 | 746 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
3e10a2ce | 747 | } else { |
88bc9d19 HK |
748 | /* Relying on default value. */ |
749 | if (!(reg & DWC3_GUSB2PHYCFG_ULPI_UTMI)) | |
750 | break; | |
3e10a2ce | 751 | } |
df561f66 | 752 | fallthrough; |
88bc9d19 | 753 | case DWC3_GHWPARAMS3_HSPHY_IFC_ULPI: |
3e10a2ce HK |
754 | default: |
755 | break; | |
756 | } | |
757 | ||
32f2ed86 WW |
758 | switch (dwc->hsphy_mode) { |
759 | case USBPHY_INTERFACE_MODE_UTMI: | |
760 | reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | | |
761 | DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); | |
762 | reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_8_BIT) | | |
763 | DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_8_BIT); | |
764 | break; | |
765 | case USBPHY_INTERFACE_MODE_UTMIW: | |
766 | reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | | |
767 | DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); | |
768 | reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_16_BIT) | | |
769 | DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_16_BIT); | |
770 | break; | |
771 | default: | |
772 | break; | |
773 | } | |
774 | ||
2164a476 HR |
775 | /* |
776 | * Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to | |
777 | * '0' during coreConsultant configuration. So default value will | |
778 | * be '0' when the core is reset. Application needs to set it to | |
779 | * '1' after the core initialization is completed. | |
780 | */ | |
9af21dd6 | 781 | if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) |
2164a476 HR |
782 | reg |= DWC3_GUSB2PHYCFG_SUSPHY; |
783 | ||
9ba3aca8 TN |
784 | /* |
785 | * For DRD controllers, GUSB2PHYCFG.SUSPHY must be cleared after | |
786 | * power-on reset, and it can be set after core initialization, which is | |
787 | * after device soft-reset during initialization. | |
788 | */ | |
789 | if (hw_mode == DWC3_GHWPARAMS0_MODE_DRD) | |
790 | reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; | |
791 | ||
cd72f890 | 792 | if (dwc->dis_u2_susphy_quirk) |
0effe0a3 HR |
793 | reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; |
794 | ||
ec791d14 JY |
795 | if (dwc->dis_enblslpm_quirk) |
796 | reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; | |
eafeacf1 TN |
797 | else |
798 | reg |= DWC3_GUSB2PHYCFG_ENBLSLPM; | |
ec791d14 | 799 | |
a6fc2f1b | 800 | if (dwc->dis_u2_freeclk_exists_quirk || dwc->gfladj_refclk_lpm_sel) |
16199f33 WW |
801 | reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; |
802 | ||
2164a476 | 803 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); |
88bc9d19 HK |
804 | |
805 | return 0; | |
b5a65c40 HR |
806 | } |
807 | ||
33fb697e SA |
808 | static int dwc3_clk_enable(struct dwc3 *dwc) |
809 | { | |
810 | int ret; | |
811 | ||
812 | ret = clk_prepare_enable(dwc->bus_clk); | |
813 | if (ret) | |
814 | return ret; | |
815 | ||
816 | ret = clk_prepare_enable(dwc->ref_clk); | |
817 | if (ret) | |
818 | goto disable_bus_clk; | |
819 | ||
820 | ret = clk_prepare_enable(dwc->susp_clk); | |
821 | if (ret) | |
822 | goto disable_ref_clk; | |
823 | ||
824 | return 0; | |
825 | ||
826 | disable_ref_clk: | |
827 | clk_disable_unprepare(dwc->ref_clk); | |
828 | disable_bus_clk: | |
829 | clk_disable_unprepare(dwc->bus_clk); | |
830 | return ret; | |
831 | } | |
832 | ||
833 | static void dwc3_clk_disable(struct dwc3 *dwc) | |
834 | { | |
835 | clk_disable_unprepare(dwc->susp_clk); | |
836 | clk_disable_unprepare(dwc->ref_clk); | |
837 | clk_disable_unprepare(dwc->bus_clk); | |
838 | } | |
839 | ||
c499ff71 FB |
840 | static void dwc3_core_exit(struct dwc3 *dwc) |
841 | { | |
842 | dwc3_event_buffers_cleanup(dwc); | |
843 | ||
d2ac7bef JH |
844 | usb_phy_set_suspend(dwc->usb2_phy, 1); |
845 | usb_phy_set_suspend(dwc->usb3_phy, 1); | |
846 | phy_power_off(dwc->usb2_generic_phy); | |
847 | phy_power_off(dwc->usb3_generic_phy); | |
848 | ||
c499ff71 FB |
849 | usb_phy_shutdown(dwc->usb2_phy); |
850 | usb_phy_shutdown(dwc->usb3_phy); | |
851 | phy_exit(dwc->usb2_generic_phy); | |
852 | phy_exit(dwc->usb3_generic_phy); | |
853 | ||
33fb697e | 854 | dwc3_clk_disable(dwc); |
fe8abf33 | 855 | reset_control_assert(dwc->reset); |
c499ff71 FB |
856 | } |
857 | ||
0759956f | 858 | static bool dwc3_core_is_valid(struct dwc3 *dwc) |
72246da4 | 859 | { |
0759956f | 860 | u32 reg; |
72246da4 | 861 | |
7650bd74 | 862 | reg = dwc3_readl(dwc->regs, DWC3_GSNPSID); |
9af21dd6 | 863 | dwc->ip = DWC3_GSNPS_ID(reg); |
0759956f | 864 | |
7650bd74 | 865 | /* This should read as U3 followed by revision number */ |
9af21dd6 | 866 | if (DWC3_IP_IS(DWC3)) { |
690fb371 | 867 | dwc->revision = reg; |
9af21dd6 | 868 | } else if (DWC3_IP_IS(DWC31) || DWC3_IP_IS(DWC32)) { |
690fb371 | 869 | dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER); |
475d8e01 | 870 | dwc->version_type = dwc3_readl(dwc->regs, DWC3_VER_TYPE); |
690fb371 | 871 | } else { |
0759956f | 872 | return false; |
7650bd74 | 873 | } |
7650bd74 | 874 | |
0759956f FB |
875 | return true; |
876 | } | |
58a0f23f | 877 | |
941f918e | 878 | static void dwc3_core_setup_global_control(struct dwc3 *dwc) |
0759956f | 879 | { |
941f918e FB |
880 | u32 hwparams4 = dwc->hwparams.hwparams4; |
881 | u32 reg; | |
c499ff71 | 882 | |
4878a028 | 883 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); |
3e87c42a | 884 | reg &= ~DWC3_GCTL_SCALEDOWN_MASK; |
4878a028 | 885 | |
164d7731 | 886 | switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) { |
4878a028 | 887 | case DWC3_GHWPARAMS1_EN_PWROPT_CLK: |
32a4a135 FB |
888 | /** |
889 | * WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an | |
890 | * issue which would cause xHCI compliance tests to fail. | |
891 | * | |
892 | * Because of that we cannot enable clock gating on such | |
893 | * configurations. | |
894 | * | |
895 | * Refers to: | |
896 | * | |
897 | * STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based | |
898 | * SOF/ITP Mode Used | |
899 | */ | |
900 | if ((dwc->dr_mode == USB_DR_MODE_HOST || | |
901 | dwc->dr_mode == USB_DR_MODE_OTG) && | |
9af21dd6 | 902 | DWC3_VER_IS_WITHIN(DWC3, 210A, 250A)) |
32a4a135 FB |
903 | reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC; |
904 | else | |
905 | reg &= ~DWC3_GCTL_DSBLCLKGTNG; | |
4878a028 | 906 | break; |
0ffcaf37 FB |
907 | case DWC3_GHWPARAMS1_EN_PWROPT_HIB: |
908 | /* enable hibernation here */ | |
909 | dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4); | |
2eac3992 HR |
910 | |
911 | /* | |
912 | * REVISIT Enabling this bit so that host-mode hibernation | |
913 | * will work. Device-mode hibernation is not yet implemented. | |
914 | */ | |
915 | reg |= DWC3_GCTL_GBLHIBERNATIONEN; | |
0ffcaf37 | 916 | break; |
4878a028 | 917 | default: |
5eb30ced FB |
918 | /* nothing */ |
919 | break; | |
4878a028 SAS |
920 | } |
921 | ||
946bd579 HR |
922 | /* check if current dwc3 is on simulation board */ |
923 | if (dwc->hwparams.hwparams6 & DWC3_GHWPARAMS6_EN_FPGA) { | |
6af19fd1 | 924 | dev_info(dwc->dev, "Running with FPGA optimizations\n"); |
946bd579 HR |
925 | dwc->is_fpga = true; |
926 | } | |
927 | ||
3b81221a HR |
928 | WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga, |
929 | "disable_scramble cannot be used on non-FPGA builds\n"); | |
930 | ||
931 | if (dwc->disable_scramble_quirk && dwc->is_fpga) | |
932 | reg |= DWC3_GCTL_DISSCRAMBLE; | |
933 | else | |
934 | reg &= ~DWC3_GCTL_DISSCRAMBLE; | |
935 | ||
9a5b2f31 HR |
936 | if (dwc->u2exit_lfps_quirk) |
937 | reg |= DWC3_GCTL_U2EXIT_LFPS; | |
938 | ||
4878a028 SAS |
939 | /* |
940 | * WORKAROUND: DWC3 revisions <1.90a have a bug | |
1d046793 | 941 | * where the device can fail to connect at SuperSpeed |
4878a028 | 942 | * and falls back to high-speed mode which causes |
1d046793 | 943 | * the device to enter a Connect/Disconnect loop |
4878a028 | 944 | */ |
9af21dd6 | 945 | if (DWC3_VER_IS_PRIOR(DWC3, 190A)) |
4878a028 SAS |
946 | reg |= DWC3_GCTL_U2RSTECN; |
947 | ||
948 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); | |
941f918e FB |
949 | } |
950 | ||
f54edb53 | 951 | static int dwc3_core_get_phy(struct dwc3 *dwc); |
98112041 | 952 | static int dwc3_core_ulpi_init(struct dwc3 *dwc); |
f54edb53 | 953 | |
d9612c2f PM |
954 | /* set global incr burst type configuration registers */ |
955 | static void dwc3_set_incr_burst_type(struct dwc3 *dwc) | |
956 | { | |
957 | struct device *dev = dwc->dev; | |
958 | /* incrx_mode : for INCR burst type. */ | |
959 | bool incrx_mode; | |
960 | /* incrx_size : for size of INCRX burst. */ | |
961 | u32 incrx_size; | |
962 | u32 *vals; | |
963 | u32 cfg; | |
964 | int ntype; | |
965 | int ret; | |
966 | int i; | |
967 | ||
968 | cfg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0); | |
969 | ||
970 | /* | |
971 | * Handle property "snps,incr-burst-type-adjustment". | |
972 | * Get the number of value from this property: | |
973 | * result <= 0, means this property is not supported. | |
974 | * result = 1, means INCRx burst mode supported. | |
975 | * result > 1, means undefined length burst mode supported. | |
976 | */ | |
a6e5e679 | 977 | ntype = device_property_count_u32(dev, "snps,incr-burst-type-adjustment"); |
d9612c2f PM |
978 | if (ntype <= 0) |
979 | return; | |
980 | ||
981 | vals = kcalloc(ntype, sizeof(u32), GFP_KERNEL); | |
4ea15088 | 982 | if (!vals) |
d9612c2f | 983 | return; |
d9612c2f PM |
984 | |
985 | /* Get INCR burst type, and parse it */ | |
986 | ret = device_property_read_u32_array(dev, | |
987 | "snps,incr-burst-type-adjustment", vals, ntype); | |
988 | if (ret) { | |
75ecb9dd | 989 | kfree(vals); |
d9612c2f PM |
990 | dev_err(dev, "Error to get property\n"); |
991 | return; | |
992 | } | |
993 | ||
994 | incrx_size = *vals; | |
995 | ||
996 | if (ntype > 1) { | |
997 | /* INCRX (undefined length) burst mode */ | |
998 | incrx_mode = INCRX_UNDEF_LENGTH_BURST_MODE; | |
999 | for (i = 1; i < ntype; i++) { | |
1000 | if (vals[i] > incrx_size) | |
1001 | incrx_size = vals[i]; | |
1002 | } | |
1003 | } else { | |
1004 | /* INCRX burst mode */ | |
1005 | incrx_mode = INCRX_BURST_MODE; | |
1006 | } | |
1007 | ||
75ecb9dd AS |
1008 | kfree(vals); |
1009 | ||
d9612c2f PM |
1010 | /* Enable Undefined Length INCR Burst and Enable INCRx Burst */ |
1011 | cfg &= ~DWC3_GSBUSCFG0_INCRBRST_MASK; | |
1012 | if (incrx_mode) | |
1013 | cfg |= DWC3_GSBUSCFG0_INCRBRSTENA; | |
1014 | switch (incrx_size) { | |
1015 | case 256: | |
1016 | cfg |= DWC3_GSBUSCFG0_INCR256BRSTENA; | |
1017 | break; | |
1018 | case 128: | |
1019 | cfg |= DWC3_GSBUSCFG0_INCR128BRSTENA; | |
1020 | break; | |
1021 | case 64: | |
1022 | cfg |= DWC3_GSBUSCFG0_INCR64BRSTENA; | |
1023 | break; | |
1024 | case 32: | |
1025 | cfg |= DWC3_GSBUSCFG0_INCR32BRSTENA; | |
1026 | break; | |
1027 | case 16: | |
1028 | cfg |= DWC3_GSBUSCFG0_INCR16BRSTENA; | |
1029 | break; | |
1030 | case 8: | |
1031 | cfg |= DWC3_GSBUSCFG0_INCR8BRSTENA; | |
1032 | break; | |
1033 | case 4: | |
1034 | cfg |= DWC3_GSBUSCFG0_INCR4BRSTENA; | |
1035 | break; | |
1036 | case 1: | |
1037 | break; | |
1038 | default: | |
1039 | dev_err(dev, "Invalid property\n"); | |
1040 | break; | |
1041 | } | |
1042 | ||
1043 | dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, cfg); | |
1044 | } | |
1045 | ||
3497b9a5 LJ |
1046 | static void dwc3_set_power_down_clk_scale(struct dwc3 *dwc) |
1047 | { | |
1048 | u32 scale; | |
1049 | u32 reg; | |
1050 | ||
1051 | if (!dwc->susp_clk) | |
1052 | return; | |
1053 | ||
1054 | /* | |
1055 | * The power down scale field specifies how many suspend_clk | |
1056 | * periods fit into a 16KHz clock period. When performing | |
1057 | * the division, round up the remainder. | |
1058 | * | |
1059 | * The power down scale value is calculated using the fastest | |
1060 | * frequency of the suspend_clk. If it isn't fixed (but within | |
1061 | * the accuracy requirement), the driver may not know the max | |
1062 | * rate of the suspend_clk, so only update the power down scale | |
1063 | * if the default is less than the calculated value from | |
1064 | * clk_get_rate() or if the default is questionably high | |
1065 | * (3x or more) to be within the requirement. | |
1066 | */ | |
1067 | scale = DIV_ROUND_UP(clk_get_rate(dwc->susp_clk), 16000); | |
1068 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
1069 | if ((reg & DWC3_GCTL_PWRDNSCALE_MASK) < DWC3_GCTL_PWRDNSCALE(scale) || | |
1070 | (reg & DWC3_GCTL_PWRDNSCALE_MASK) > DWC3_GCTL_PWRDNSCALE(scale*3)) { | |
1071 | reg &= ~(DWC3_GCTL_PWRDNSCALE_MASK); | |
1072 | reg |= DWC3_GCTL_PWRDNSCALE(scale); | |
1073 | dwc3_writel(dwc->regs, DWC3_GCTL, reg); | |
1074 | } | |
1075 | } | |
1076 | ||
941f918e FB |
1077 | /** |
1078 | * dwc3_core_init - Low-level initialization of DWC3 Core | |
1079 | * @dwc: Pointer to our controller context structure | |
1080 | * | |
1081 | * Returns 0 on success otherwise negative errno. | |
1082 | */ | |
1083 | static int dwc3_core_init(struct dwc3 *dwc) | |
1084 | { | |
9ba3aca8 | 1085 | unsigned int hw_mode; |
941f918e FB |
1086 | u32 reg; |
1087 | int ret; | |
1088 | ||
9ba3aca8 TN |
1089 | hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0); |
1090 | ||
941f918e FB |
1091 | /* |
1092 | * Write Linux Version Code to our GUID register so it's easy to figure | |
1093 | * out which kernel version a bug was found. | |
1094 | */ | |
1095 | dwc3_writel(dwc->regs, DWC3_GUID, LINUX_VERSION_CODE); | |
1096 | ||
98112041 | 1097 | ret = dwc3_phy_setup(dwc); |
941f918e FB |
1098 | if (ret) |
1099 | goto err0; | |
4878a028 | 1100 | |
98112041 RQ |
1101 | if (!dwc->ulpi_ready) { |
1102 | ret = dwc3_core_ulpi_init(dwc); | |
63130462 FT |
1103 | if (ret) { |
1104 | if (ret == -ETIMEDOUT) { | |
1105 | dwc3_core_soft_reset(dwc); | |
1106 | ret = -EPROBE_DEFER; | |
1107 | } | |
98112041 | 1108 | goto err0; |
63130462 | 1109 | } |
98112041 RQ |
1110 | dwc->ulpi_ready = true; |
1111 | } | |
4878a028 | 1112 | |
98112041 RQ |
1113 | if (!dwc->phys_ready) { |
1114 | ret = dwc3_core_get_phy(dwc); | |
1115 | if (ret) | |
1116 | goto err0a; | |
1117 | dwc->phys_ready = true; | |
1118 | } | |
1119 | ||
8cfac9a6 LJ |
1120 | usb_phy_init(dwc->usb2_phy); |
1121 | usb_phy_init(dwc->usb3_phy); | |
1122 | ret = phy_init(dwc->usb2_generic_phy); | |
1123 | if (ret < 0) | |
1124 | goto err0a; | |
1125 | ||
1126 | ret = phy_init(dwc->usb3_generic_phy); | |
1127 | if (ret < 0) { | |
1128 | phy_exit(dwc->usb2_generic_phy); | |
1129 | goto err0a; | |
1130 | } | |
1131 | ||
98112041 | 1132 | ret = dwc3_core_soft_reset(dwc); |
f54edb53 | 1133 | if (ret) |
8cfac9a6 | 1134 | goto err1; |
f54edb53 | 1135 | |
9ba3aca8 | 1136 | if (hw_mode == DWC3_GHWPARAMS0_MODE_DRD && |
9af21dd6 | 1137 | !DWC3_VER_IS_WITHIN(DWC3, ANY, 194A)) { |
9ba3aca8 TN |
1138 | if (!dwc->dis_u3_susphy_quirk) { |
1139 | reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); | |
1140 | reg |= DWC3_GUSB3PIPECTL_SUSPHY; | |
1141 | dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); | |
1142 | } | |
1143 | ||
1144 | if (!dwc->dis_u2_susphy_quirk) { | |
1145 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); | |
1146 | reg |= DWC3_GUSB2PHYCFG_SUSPHY; | |
1147 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); | |
1148 | } | |
1149 | } | |
1150 | ||
941f918e | 1151 | dwc3_core_setup_global_control(dwc); |
c499ff71 | 1152 | dwc3_core_num_eps(dwc); |
0ffcaf37 FB |
1153 | |
1154 | ret = dwc3_setup_scratch_buffers(dwc); | |
1155 | if (ret) | |
c499ff71 FB |
1156 | goto err1; |
1157 | ||
3497b9a5 LJ |
1158 | /* Set power down scale of suspend_clk */ |
1159 | dwc3_set_power_down_clk_scale(dwc); | |
1160 | ||
c499ff71 FB |
1161 | /* Adjust Frame Length */ |
1162 | dwc3_frame_length_adjustment(dwc); | |
1163 | ||
7bee3188 BP |
1164 | /* Adjust Reference Clock Period */ |
1165 | dwc3_ref_clk_period(dwc); | |
1166 | ||
d9612c2f PM |
1167 | dwc3_set_incr_burst_type(dwc); |
1168 | ||
c499ff71 FB |
1169 | usb_phy_set_suspend(dwc->usb2_phy, 0); |
1170 | usb_phy_set_suspend(dwc->usb3_phy, 0); | |
1171 | ret = phy_power_on(dwc->usb2_generic_phy); | |
1172 | if (ret < 0) | |
0ffcaf37 FB |
1173 | goto err2; |
1174 | ||
c499ff71 FB |
1175 | ret = phy_power_on(dwc->usb3_generic_phy); |
1176 | if (ret < 0) | |
1177 | goto err3; | |
1178 | ||
1179 | ret = dwc3_event_buffers_setup(dwc); | |
1180 | if (ret) { | |
1181 | dev_err(dwc->dev, "failed to setup event buffers\n"); | |
1182 | goto err4; | |
1183 | } | |
1184 | ||
06281d46 JY |
1185 | /* |
1186 | * ENDXFER polling is available on version 3.10a and later of | |
1187 | * the DWC_usb3 controller. It is NOT available in the | |
1188 | * DWC_usb31 controller. | |
1189 | */ | |
9af21dd6 | 1190 | if (DWC3_VER_IS_WITHIN(DWC3, 310A, ANY)) { |
06281d46 JY |
1191 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL2); |
1192 | reg |= DWC3_GUCTL2_RST_ACTBITLATER; | |
1193 | dwc3_writel(dwc->regs, DWC3_GUCTL2, reg); | |
1194 | } | |
1195 | ||
63d7f981 PM |
1196 | /* |
1197 | * When configured in HOST mode, after issuing U3/L2 exit controller | |
1198 | * fails to send proper CRC checksum in CRC5 feild. Because of this | |
1199 | * behaviour Transaction Error is generated, resulting in reset and | |
1200 | * re-enumeration of usb device attached. All the termsel, xcvrsel, | |
1201 | * opmode becomes 0 during end of resume. Enabling bit 10 of GUCTL1 | |
1202 | * will correct this problem. This option is to support certain | |
1203 | * legacy ULPI PHYs. | |
1204 | */ | |
1205 | if (dwc->resume_hs_terminations) { | |
1206 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); | |
1207 | reg |= DWC3_GUCTL1_RESUME_OPMODE_HS_HOST; | |
1208 | dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); | |
1209 | } | |
1210 | ||
9af21dd6 | 1211 | if (!DWC3_VER_IS_PRIOR(DWC3, 250A)) { |
0bb39ca1 | 1212 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); |
65db7a0c WW |
1213 | |
1214 | /* | |
1215 | * Enable hardware control of sending remote wakeup | |
1216 | * in HS when the device is in the L1 state. | |
1217 | */ | |
9af21dd6 | 1218 | if (!DWC3_VER_IS_PRIOR(DWC3, 290A)) |
65db7a0c WW |
1219 | reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; |
1220 | ||
843714bb JP |
1221 | /* |
1222 | * Decouple USB 2.0 L1 & L2 events which will allow for | |
1223 | * gadget driver to only receive U3/L2 suspend & wakeup | |
1224 | * events and prevent the more frequent L1 LPM transitions | |
1225 | * from interrupting the driver. | |
1226 | */ | |
1227 | if (!DWC3_VER_IS_PRIOR(DWC3, 300A)) | |
1228 | reg |= DWC3_GUCTL1_DEV_DECOUPLE_L1L2_EVT; | |
1229 | ||
65db7a0c WW |
1230 | if (dwc->dis_tx_ipgap_linecheck_quirk) |
1231 | reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; | |
1232 | ||
7ba6b09f NA |
1233 | if (dwc->parkmode_disable_ss_quirk) |
1234 | reg |= DWC3_GUCTL1_PARKMODE_DISABLE_SS; | |
1235 | ||
62b20e6e BY |
1236 | if (DWC3_VER_IS_WITHIN(DWC3, 290A, ANY) && |
1237 | (dwc->maximum_speed == USB_SPEED_HIGH || | |
1238 | dwc->maximum_speed == USB_SPEED_FULL)) | |
1239 | reg |= DWC3_GUCTL1_DEV_FORCE_20_CLK_FOR_30_CLK; | |
1240 | ||
0bb39ca1 JY |
1241 | dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); |
1242 | } | |
1243 | ||
b138e23d AKV |
1244 | if (dwc->dr_mode == USB_DR_MODE_HOST || |
1245 | dwc->dr_mode == USB_DR_MODE_OTG) { | |
1246 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL); | |
1247 | ||
1248 | /* | |
1249 | * Enable Auto retry Feature to make the controller operating in | |
1250 | * Host mode on seeing transaction errors(CRC errors or internal | |
1251 | * overrun scenerios) on IN transfers to reply to the device | |
1252 | * with a non-terminating retry ACK (i.e, an ACK transcation | |
1253 | * packet with Retry=1 & Nump != 0) | |
1254 | */ | |
1255 | reg |= DWC3_GUCTL_HSTINAUTORETRY; | |
1256 | ||
1257 | dwc3_writel(dwc->regs, DWC3_GUCTL, reg); | |
1258 | } | |
1259 | ||
938a5ad1 TN |
1260 | /* |
1261 | * Must config both number of packets and max burst settings to enable | |
1262 | * RX and/or TX threshold. | |
1263 | */ | |
9af21dd6 | 1264 | if (!DWC3_IP_IS(DWC3) && dwc->dr_mode == USB_DR_MODE_HOST) { |
938a5ad1 TN |
1265 | u8 rx_thr_num = dwc->rx_thr_num_pkt_prd; |
1266 | u8 rx_maxburst = dwc->rx_max_burst_prd; | |
1267 | u8 tx_thr_num = dwc->tx_thr_num_pkt_prd; | |
1268 | u8 tx_maxburst = dwc->tx_max_burst_prd; | |
1269 | ||
1270 | if (rx_thr_num && rx_maxburst) { | |
1271 | reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); | |
1272 | reg |= DWC31_RXTHRNUMPKTSEL_PRD; | |
1273 | ||
1274 | reg &= ~DWC31_RXTHRNUMPKT_PRD(~0); | |
1275 | reg |= DWC31_RXTHRNUMPKT_PRD(rx_thr_num); | |
1276 | ||
1277 | reg &= ~DWC31_MAXRXBURSTSIZE_PRD(~0); | |
1278 | reg |= DWC31_MAXRXBURSTSIZE_PRD(rx_maxburst); | |
1279 | ||
1280 | dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); | |
1281 | } | |
1282 | ||
1283 | if (tx_thr_num && tx_maxburst) { | |
1284 | reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG); | |
1285 | reg |= DWC31_TXTHRNUMPKTSEL_PRD; | |
1286 | ||
1287 | reg &= ~DWC31_TXTHRNUMPKT_PRD(~0); | |
1288 | reg |= DWC31_TXTHRNUMPKT_PRD(tx_thr_num); | |
1289 | ||
1290 | reg &= ~DWC31_MAXTXBURSTSIZE_PRD(~0); | |
1291 | reg |= DWC31_MAXTXBURSTSIZE_PRD(tx_maxburst); | |
1292 | ||
1293 | dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg); | |
1294 | } | |
1295 | } | |
1296 | ||
72246da4 FB |
1297 | return 0; |
1298 | ||
c499ff71 | 1299 | err4: |
9b9d7cdd | 1300 | phy_power_off(dwc->usb3_generic_phy); |
c499ff71 FB |
1301 | |
1302 | err3: | |
9b9d7cdd | 1303 | phy_power_off(dwc->usb2_generic_phy); |
c499ff71 | 1304 | |
0ffcaf37 | 1305 | err2: |
c499ff71 FB |
1306 | usb_phy_set_suspend(dwc->usb2_phy, 1); |
1307 | usb_phy_set_suspend(dwc->usb3_phy, 1); | |
0ffcaf37 FB |
1308 | |
1309 | err1: | |
1310 | usb_phy_shutdown(dwc->usb2_phy); | |
1311 | usb_phy_shutdown(dwc->usb3_phy); | |
57303488 KVA |
1312 | phy_exit(dwc->usb2_generic_phy); |
1313 | phy_exit(dwc->usb3_generic_phy); | |
0ffcaf37 | 1314 | |
98112041 RQ |
1315 | err0a: |
1316 | dwc3_ulpi_exit(dwc); | |
1317 | ||
72246da4 FB |
1318 | err0: |
1319 | return ret; | |
1320 | } | |
1321 | ||
3c9f94ac | 1322 | static int dwc3_core_get_phy(struct dwc3 *dwc) |
72246da4 | 1323 | { |
3c9f94ac | 1324 | struct device *dev = dwc->dev; |
941ea361 | 1325 | struct device_node *node = dev->of_node; |
3c9f94ac | 1326 | int ret; |
72246da4 | 1327 | |
5088b6f5 KVA |
1328 | if (node) { |
1329 | dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); | |
1330 | dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); | |
bb674907 FB |
1331 | } else { |
1332 | dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); | |
1333 | dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); | |
5088b6f5 KVA |
1334 | } |
1335 | ||
d105e7f8 FB |
1336 | if (IS_ERR(dwc->usb2_phy)) { |
1337 | ret = PTR_ERR(dwc->usb2_phy); | |
d090c7a2 | 1338 | if (ret == -ENXIO || ret == -ENODEV) |
122f06e6 | 1339 | dwc->usb2_phy = NULL; |
d090c7a2 | 1340 | else |
0c0a20f6 | 1341 | return dev_err_probe(dev, ret, "no usb2 phy configured\n"); |
51e1e7bc FB |
1342 | } |
1343 | ||
d105e7f8 | 1344 | if (IS_ERR(dwc->usb3_phy)) { |
315955d7 | 1345 | ret = PTR_ERR(dwc->usb3_phy); |
d090c7a2 | 1346 | if (ret == -ENXIO || ret == -ENODEV) |
122f06e6 | 1347 | dwc->usb3_phy = NULL; |
d090c7a2 | 1348 | else |
0c0a20f6 | 1349 | return dev_err_probe(dev, ret, "no usb3 phy configured\n"); |
51e1e7bc FB |
1350 | } |
1351 | ||
57303488 KVA |
1352 | dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy"); |
1353 | if (IS_ERR(dwc->usb2_generic_phy)) { | |
1354 | ret = PTR_ERR(dwc->usb2_generic_phy); | |
fb119dcb | 1355 | if (ret == -ENOSYS || ret == -ENODEV) |
57303488 | 1356 | dwc->usb2_generic_phy = NULL; |
d090c7a2 | 1357 | else |
0c0a20f6 | 1358 | return dev_err_probe(dev, ret, "no usb2 phy configured\n"); |
57303488 KVA |
1359 | } |
1360 | ||
1361 | dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy"); | |
1362 | if (IS_ERR(dwc->usb3_generic_phy)) { | |
1363 | ret = PTR_ERR(dwc->usb3_generic_phy); | |
fb119dcb | 1364 | if (ret == -ENOSYS || ret == -ENODEV) |
57303488 | 1365 | dwc->usb3_generic_phy = NULL; |
d090c7a2 | 1366 | else |
0c0a20f6 | 1367 | return dev_err_probe(dev, ret, "no usb3 phy configured\n"); |
57303488 KVA |
1368 | } |
1369 | ||
3c9f94ac FB |
1370 | return 0; |
1371 | } | |
1372 | ||
5f94adfe FB |
1373 | static int dwc3_core_init_mode(struct dwc3 *dwc) |
1374 | { | |
1375 | struct device *dev = dwc->dev; | |
1376 | int ret; | |
1377 | ||
1378 | switch (dwc->dr_mode) { | |
1379 | case USB_DR_MODE_PERIPHERAL: | |
41ce1456 | 1380 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); |
958d1a4c FB |
1381 | |
1382 | if (dwc->usb2_phy) | |
1383 | otg_set_vbus(dwc->usb2_phy->otg, false); | |
644cbbc3 MG |
1384 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE); |
1385 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE); | |
958d1a4c | 1386 | |
5f94adfe | 1387 | ret = dwc3_gadget_init(dwc); |
0c0a20f6 AS |
1388 | if (ret) |
1389 | return dev_err_probe(dev, ret, "failed to initialize gadget\n"); | |
5f94adfe FB |
1390 | break; |
1391 | case USB_DR_MODE_HOST: | |
41ce1456 | 1392 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); |
958d1a4c FB |
1393 | |
1394 | if (dwc->usb2_phy) | |
1395 | otg_set_vbus(dwc->usb2_phy->otg, true); | |
644cbbc3 MG |
1396 | phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST); |
1397 | phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST); | |
958d1a4c | 1398 | |
5f94adfe | 1399 | ret = dwc3_host_init(dwc); |
0c0a20f6 AS |
1400 | if (ret) |
1401 | return dev_err_probe(dev, ret, "failed to initialize host\n"); | |
5f94adfe FB |
1402 | break; |
1403 | case USB_DR_MODE_OTG: | |
41ce1456 | 1404 | INIT_WORK(&dwc->drd_work, __dwc3_set_mode); |
9840354f | 1405 | ret = dwc3_drd_init(dwc); |
0c0a20f6 AS |
1406 | if (ret) |
1407 | return dev_err_probe(dev, ret, "failed to initialize dual-role\n"); | |
5f94adfe FB |
1408 | break; |
1409 | default: | |
1410 | dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); | |
1411 | return -EINVAL; | |
1412 | } | |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | static void dwc3_core_exit_mode(struct dwc3 *dwc) | |
1418 | { | |
1419 | switch (dwc->dr_mode) { | |
1420 | case USB_DR_MODE_PERIPHERAL: | |
1421 | dwc3_gadget_exit(dwc); | |
1422 | break; | |
1423 | case USB_DR_MODE_HOST: | |
1424 | dwc3_host_exit(dwc); | |
1425 | break; | |
1426 | case USB_DR_MODE_OTG: | |
9840354f | 1427 | dwc3_drd_exit(dwc); |
5f94adfe FB |
1428 | break; |
1429 | default: | |
1430 | /* do nothing */ | |
1431 | break; | |
1432 | } | |
09ed259f BL |
1433 | |
1434 | /* de-assert DRVVBUS for HOST and OTG mode */ | |
1435 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); | |
5f94adfe FB |
1436 | } |
1437 | ||
c5ac6116 | 1438 | static void dwc3_get_properties(struct dwc3 *dwc) |
3c9f94ac | 1439 | { |
c5ac6116 | 1440 | struct device *dev = dwc->dev; |
80caf7d2 | 1441 | u8 lpm_nyet_threshold; |
6b6a0c9a | 1442 | u8 tx_de_emphasis; |
460d098c | 1443 | u8 hird_threshold; |
f28ad906 TN |
1444 | u8 rx_thr_num_pkt_prd = 0; |
1445 | u8 rx_max_burst_prd = 0; | |
1446 | u8 tx_thr_num_pkt_prd = 0; | |
1447 | u8 tx_max_burst_prd = 0; | |
9f607a30 | 1448 | u8 tx_fifo_resize_max_num; |
6f0764b5 RC |
1449 | const char *usb_psy_name; |
1450 | int ret; | |
3c9f94ac | 1451 | |
80caf7d2 | 1452 | /* default to highest possible threshold */ |
8d791929 | 1453 | lpm_nyet_threshold = 0xf; |
80caf7d2 | 1454 | |
6b6a0c9a HR |
1455 | /* default to -3.5dB de-emphasis */ |
1456 | tx_de_emphasis = 1; | |
1457 | ||
460d098c HR |
1458 | /* |
1459 | * default to assert utmi_sleep_n and use maximum allowed HIRD | |
1460 | * threshold value of 0b1100 | |
1461 | */ | |
1462 | hird_threshold = 12; | |
1463 | ||
9f607a30 WC |
1464 | /* |
1465 | * default to a TXFIFO size large enough to fit 6 max packets. This | |
1466 | * allows for systems with larger bus latencies to have some headroom | |
1467 | * for endpoints that have a large bMaxBurst value. | |
1468 | */ | |
1469 | tx_fifo_resize_max_num = 6; | |
1470 | ||
63863b98 | 1471 | dwc->maximum_speed = usb_get_maximum_speed(dev); |
67848146 | 1472 | dwc->max_ssp_rate = usb_get_maximum_ssp_rate(dev); |
06e7114f | 1473 | dwc->dr_mode = usb_get_dr_mode(dev); |
32f2ed86 | 1474 | dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node); |
63863b98 | 1475 | |
d64ff406 AB |
1476 | dwc->sysdev_is_parent = device_property_read_bool(dev, |
1477 | "linux,sysdev_is_parent"); | |
1478 | if (dwc->sysdev_is_parent) | |
1479 | dwc->sysdev = dwc->dev->parent; | |
1480 | else | |
1481 | dwc->sysdev = dwc->dev; | |
1482 | ||
6f0764b5 RC |
1483 | ret = device_property_read_string(dev, "usb-psy-name", &usb_psy_name); |
1484 | if (ret >= 0) { | |
1485 | dwc->usb_psy = power_supply_get_by_name(usb_psy_name); | |
1486 | if (!dwc->usb_psy) | |
1487 | dev_err(dev, "couldn't get usb power supply\n"); | |
1488 | } | |
1489 | ||
3d128919 | 1490 | dwc->has_lpm_erratum = device_property_read_bool(dev, |
80caf7d2 | 1491 | "snps,has-lpm-erratum"); |
3d128919 | 1492 | device_property_read_u8(dev, "snps,lpm-nyet-threshold", |
80caf7d2 | 1493 | &lpm_nyet_threshold); |
3d128919 | 1494 | dwc->is_utmi_l1_suspend = device_property_read_bool(dev, |
460d098c | 1495 | "snps,is-utmi-l1-suspend"); |
3d128919 | 1496 | device_property_read_u8(dev, "snps,hird-threshold", |
460d098c | 1497 | &hird_threshold); |
d92021f6 TN |
1498 | dwc->dis_start_transfer_quirk = device_property_read_bool(dev, |
1499 | "snps,dis-start-transfer-quirk"); | |
3d128919 | 1500 | dwc->usb3_lpm_capable = device_property_read_bool(dev, |
eac68e8f | 1501 | "snps,usb3_lpm_capable"); |
022a0208 TN |
1502 | dwc->usb2_lpm_disable = device_property_read_bool(dev, |
1503 | "snps,usb2-lpm-disable"); | |
475e8be5 TN |
1504 | dwc->usb2_gadget_lpm_disable = device_property_read_bool(dev, |
1505 | "snps,usb2-gadget-lpm-disable"); | |
938a5ad1 TN |
1506 | device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd", |
1507 | &rx_thr_num_pkt_prd); | |
1508 | device_property_read_u8(dev, "snps,rx-max-burst-prd", | |
1509 | &rx_max_burst_prd); | |
1510 | device_property_read_u8(dev, "snps,tx-thr-num-pkt-prd", | |
1511 | &tx_thr_num_pkt_prd); | |
1512 | device_property_read_u8(dev, "snps,tx-max-burst-prd", | |
1513 | &tx_max_burst_prd); | |
9f607a30 WC |
1514 | dwc->do_fifo_resize = device_property_read_bool(dev, |
1515 | "tx-fifo-resize"); | |
1516 | if (dwc->do_fifo_resize) | |
1517 | device_property_read_u8(dev, "tx-fifo-max-num", | |
1518 | &tx_fifo_resize_max_num); | |
3c9f94ac | 1519 | |
3d128919 | 1520 | dwc->disable_scramble_quirk = device_property_read_bool(dev, |
3b81221a | 1521 | "snps,disable_scramble_quirk"); |
3d128919 | 1522 | dwc->u2exit_lfps_quirk = device_property_read_bool(dev, |
9a5b2f31 | 1523 | "snps,u2exit_lfps_quirk"); |
3d128919 | 1524 | dwc->u2ss_inp3_quirk = device_property_read_bool(dev, |
b5a65c40 | 1525 | "snps,u2ss_inp3_quirk"); |
3d128919 | 1526 | dwc->req_p1p2p3_quirk = device_property_read_bool(dev, |
df31f5b3 | 1527 | "snps,req_p1p2p3_quirk"); |
3d128919 | 1528 | dwc->del_p1p2p3_quirk = device_property_read_bool(dev, |
a2a1d0f5 | 1529 | "snps,del_p1p2p3_quirk"); |
3d128919 | 1530 | dwc->del_phy_power_chg_quirk = device_property_read_bool(dev, |
41c06ffd | 1531 | "snps,del_phy_power_chg_quirk"); |
3d128919 | 1532 | dwc->lfps_filter_quirk = device_property_read_bool(dev, |
fb67afca | 1533 | "snps,lfps_filter_quirk"); |
3d128919 | 1534 | dwc->rx_detect_poll_quirk = device_property_read_bool(dev, |
14f4ac53 | 1535 | "snps,rx_detect_poll_quirk"); |
3d128919 | 1536 | dwc->dis_u3_susphy_quirk = device_property_read_bool(dev, |
59acfa20 | 1537 | "snps,dis_u3_susphy_quirk"); |
3d128919 | 1538 | dwc->dis_u2_susphy_quirk = device_property_read_bool(dev, |
0effe0a3 | 1539 | "snps,dis_u2_susphy_quirk"); |
ec791d14 JY |
1540 | dwc->dis_enblslpm_quirk = device_property_read_bool(dev, |
1541 | "snps,dis_enblslpm_quirk"); | |
729dcffd AKV |
1542 | dwc->dis_u1_entry_quirk = device_property_read_bool(dev, |
1543 | "snps,dis-u1-entry-quirk"); | |
1544 | dwc->dis_u2_entry_quirk = device_property_read_bool(dev, | |
1545 | "snps,dis-u2-entry-quirk"); | |
e58dd357 RB |
1546 | dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev, |
1547 | "snps,dis_rxdet_inp3_quirk"); | |
16199f33 WW |
1548 | dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev, |
1549 | "snps,dis-u2-freeclk-exists-quirk"); | |
00fe081d WW |
1550 | dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev, |
1551 | "snps,dis-del-phy-power-chg-quirk"); | |
65db7a0c WW |
1552 | dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev, |
1553 | "snps,dis-tx-ipgap-linecheck-quirk"); | |
63d7f981 PM |
1554 | dwc->resume_hs_terminations = device_property_read_bool(dev, |
1555 | "snps,resume-hs-terminations"); | |
7ba6b09f NA |
1556 | dwc->parkmode_disable_ss_quirk = device_property_read_bool(dev, |
1557 | "snps,parkmode-disable-ss-quirk"); | |
a6fc2f1b AS |
1558 | dwc->gfladj_refclk_lpm_sel = device_property_read_bool(dev, |
1559 | "snps,gfladj-refclk-lpm-sel-quirk"); | |
6b6a0c9a | 1560 | |
3d128919 | 1561 | dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, |
6b6a0c9a | 1562 | "snps,tx_de_emphasis_quirk"); |
3d128919 | 1563 | device_property_read_u8(dev, "snps,tx_de_emphasis", |
6b6a0c9a | 1564 | &tx_de_emphasis); |
3d128919 HK |
1565 | device_property_read_string(dev, "snps,hsphy_interface", |
1566 | &dwc->hsphy_interface); | |
1567 | device_property_read_u32(dev, "snps,quirk-frame-length-adjustment", | |
bcdb3272 | 1568 | &dwc->fladj); |
7bee3188 BP |
1569 | device_property_read_u32(dev, "snps,ref-clock-period-ns", |
1570 | &dwc->ref_clk_per); | |
3d128919 | 1571 | |
42bf02ec RQ |
1572 | dwc->dis_metastability_quirk = device_property_read_bool(dev, |
1573 | "snps,dis_metastability_quirk"); | |
1574 | ||
f580170f YC |
1575 | dwc->dis_split_quirk = device_property_read_bool(dev, |
1576 | "snps,dis-split-quirk"); | |
1577 | ||
80caf7d2 | 1578 | dwc->lpm_nyet_threshold = lpm_nyet_threshold; |
6b6a0c9a | 1579 | dwc->tx_de_emphasis = tx_de_emphasis; |
80caf7d2 | 1580 | |
16fe4f30 | 1581 | dwc->hird_threshold = hird_threshold; |
460d098c | 1582 | |
938a5ad1 TN |
1583 | dwc->rx_thr_num_pkt_prd = rx_thr_num_pkt_prd; |
1584 | dwc->rx_max_burst_prd = rx_max_burst_prd; | |
1585 | ||
1586 | dwc->tx_thr_num_pkt_prd = tx_thr_num_pkt_prd; | |
1587 | dwc->tx_max_burst_prd = tx_max_burst_prd; | |
1588 | ||
cf40b86b | 1589 | dwc->imod_interval = 0; |
9f607a30 WC |
1590 | |
1591 | dwc->tx_fifo_resize_max_num = tx_fifo_resize_max_num; | |
cf40b86b JY |
1592 | } |
1593 | ||
1594 | /* check whether the core supports IMOD */ | |
1595 | bool dwc3_has_imod(struct dwc3 *dwc) | |
1596 | { | |
9af21dd6 TN |
1597 | return DWC3_VER_IS_WITHIN(DWC3, 300A, ANY) || |
1598 | DWC3_VER_IS_WITHIN(DWC31, 120A, ANY) || | |
1599 | DWC3_IP_IS(DWC32); | |
c5ac6116 FB |
1600 | } |
1601 | ||
7ac51a12 JY |
1602 | static void dwc3_check_params(struct dwc3 *dwc) |
1603 | { | |
1604 | struct device *dev = dwc->dev; | |
b574ce3e TN |
1605 | unsigned int hwparam_gen = |
1606 | DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3); | |
7ac51a12 | 1607 | |
cf40b86b JY |
1608 | /* Check for proper value of imod_interval */ |
1609 | if (dwc->imod_interval && !dwc3_has_imod(dwc)) { | |
1610 | dev_warn(dwc->dev, "Interrupt moderation not supported\n"); | |
1611 | dwc->imod_interval = 0; | |
1612 | } | |
1613 | ||
28632b44 JY |
1614 | /* |
1615 | * Workaround for STAR 9000961433 which affects only version | |
1616 | * 3.00a of the DWC_usb3 core. This prevents the controller | |
1617 | * interrupt from being masked while handling events. IMOD | |
1618 | * allows us to work around this issue. Enable it for the | |
1619 | * affected version. | |
1620 | */ | |
1621 | if (!dwc->imod_interval && | |
9af21dd6 | 1622 | DWC3_VER_IS(DWC3, 300A)) |
28632b44 JY |
1623 | dwc->imod_interval = 1; |
1624 | ||
7ac51a12 JY |
1625 | /* Check the maximum_speed parameter */ |
1626 | switch (dwc->maximum_speed) { | |
7ac51a12 JY |
1627 | case USB_SPEED_FULL: |
1628 | case USB_SPEED_HIGH: | |
e518bdd9 | 1629 | break; |
7ac51a12 | 1630 | case USB_SPEED_SUPER: |
e518bdd9 TN |
1631 | if (hwparam_gen == DWC3_GHWPARAMS3_SSPHY_IFC_DIS) |
1632 | dev_warn(dev, "UDC doesn't support Gen 1\n"); | |
1633 | break; | |
7ac51a12 | 1634 | case USB_SPEED_SUPER_PLUS: |
e518bdd9 TN |
1635 | if ((DWC3_IP_IS(DWC32) && |
1636 | hwparam_gen == DWC3_GHWPARAMS3_SSPHY_IFC_DIS) || | |
1637 | (!DWC3_IP_IS(DWC32) && | |
1638 | hwparam_gen != DWC3_GHWPARAMS3_SSPHY_IFC_GEN2)) | |
1639 | dev_warn(dev, "UDC doesn't support SSP\n"); | |
7ac51a12 JY |
1640 | break; |
1641 | default: | |
1642 | dev_err(dev, "invalid maximum_speed parameter %d\n", | |
1643 | dwc->maximum_speed); | |
df561f66 | 1644 | fallthrough; |
7ac51a12 | 1645 | case USB_SPEED_UNKNOWN: |
b574ce3e TN |
1646 | switch (hwparam_gen) { |
1647 | case DWC3_GHWPARAMS3_SSPHY_IFC_GEN2: | |
7ac51a12 | 1648 | dwc->maximum_speed = USB_SPEED_SUPER_PLUS; |
b574ce3e TN |
1649 | break; |
1650 | case DWC3_GHWPARAMS3_SSPHY_IFC_GEN1: | |
1651 | if (DWC3_IP_IS(DWC32)) | |
1652 | dwc->maximum_speed = USB_SPEED_SUPER_PLUS; | |
1653 | else | |
1654 | dwc->maximum_speed = USB_SPEED_SUPER; | |
1655 | break; | |
1656 | case DWC3_GHWPARAMS3_SSPHY_IFC_DIS: | |
1657 | dwc->maximum_speed = USB_SPEED_HIGH; | |
1658 | break; | |
1659 | default: | |
1660 | dwc->maximum_speed = USB_SPEED_SUPER; | |
1661 | break; | |
1662 | } | |
7ac51a12 JY |
1663 | break; |
1664 | } | |
67848146 TN |
1665 | |
1666 | /* | |
1667 | * Currently the controller does not have visibility into the HW | |
1668 | * parameter to determine the maximum number of lanes the HW supports. | |
1669 | * If the number of lanes is not specified in the device property, then | |
1670 | * set the default to support dual-lane for DWC_usb32 and single-lane | |
1671 | * for DWC_usb31 for super-speed-plus. | |
1672 | */ | |
1673 | if (dwc->maximum_speed == USB_SPEED_SUPER_PLUS) { | |
1674 | switch (dwc->max_ssp_rate) { | |
1675 | case USB_SSP_GEN_2x1: | |
1676 | if (hwparam_gen == DWC3_GHWPARAMS3_SSPHY_IFC_GEN1) | |
1677 | dev_warn(dev, "UDC only supports Gen 1\n"); | |
1678 | break; | |
1679 | case USB_SSP_GEN_1x2: | |
1680 | case USB_SSP_GEN_2x2: | |
1681 | if (DWC3_IP_IS(DWC31)) | |
1682 | dev_warn(dev, "UDC only supports single lane\n"); | |
1683 | break; | |
1684 | case USB_SSP_GEN_UNKNOWN: | |
1685 | default: | |
1686 | switch (hwparam_gen) { | |
1687 | case DWC3_GHWPARAMS3_SSPHY_IFC_GEN2: | |
1688 | if (DWC3_IP_IS(DWC32)) | |
1689 | dwc->max_ssp_rate = USB_SSP_GEN_2x2; | |
1690 | else | |
1691 | dwc->max_ssp_rate = USB_SSP_GEN_2x1; | |
1692 | break; | |
1693 | case DWC3_GHWPARAMS3_SSPHY_IFC_GEN1: | |
1694 | if (DWC3_IP_IS(DWC32)) | |
1695 | dwc->max_ssp_rate = USB_SSP_GEN_1x2; | |
1696 | break; | |
1697 | } | |
1698 | break; | |
1699 | } | |
1700 | } | |
7ac51a12 JY |
1701 | } |
1702 | ||
d182c2e1 AS |
1703 | static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc) |
1704 | { | |
1705 | struct device *dev = dwc->dev; | |
1706 | struct device_node *np_phy; | |
1707 | struct extcon_dev *edev = NULL; | |
1708 | const char *name; | |
1709 | ||
1710 | if (device_property_read_bool(dev, "extcon")) | |
1711 | return extcon_get_edev_by_phandle(dev, 0); | |
1712 | ||
1713 | /* | |
1714 | * Device tree platforms should get extcon via phandle. | |
1715 | * On ACPI platforms, we get the name from a device property. | |
1716 | * This device property is for kernel internal use only and | |
1717 | * is expected to be set by the glue code. | |
1718 | */ | |
1719 | if (device_property_read_string(dev, "linux,extcon-name", &name) == 0) | |
1720 | return extcon_get_extcon_dev(name); | |
1721 | ||
d68cc25b JG |
1722 | /* |
1723 | * Check explicitly if "usb-role-switch" is used since | |
1724 | * extcon_find_edev_by_node() can not be used to check the absence of | |
1725 | * an extcon device. In the absence of an device it will always return | |
1726 | * EPROBE_DEFER. | |
1727 | */ | |
1728 | if (IS_ENABLED(CONFIG_USB_ROLE_SWITCH) && | |
1729 | device_property_read_bool(dev, "usb-role-switch")) | |
1730 | return NULL; | |
1731 | ||
d182c2e1 AS |
1732 | /* |
1733 | * Try to get an extcon device from the USB PHY controller's "port" | |
1734 | * node. Check if it has the "port" node first, to avoid printing the | |
1735 | * error message from underlying code, as it's a valid case: extcon | |
1736 | * device (and "port" node) may be missing in case of "usb-role-switch" | |
1737 | * or OTG mode. | |
1738 | */ | |
1739 | np_phy = of_parse_phandle(dev->of_node, "phys", 0); | |
1740 | if (of_graph_is_present(np_phy)) { | |
1741 | struct device_node *np_conn; | |
1742 | ||
1743 | np_conn = of_graph_get_remote_node(np_phy, -1, -1); | |
1744 | if (np_conn) | |
1745 | edev = extcon_find_edev_by_node(np_conn); | |
1746 | of_node_put(np_conn); | |
1747 | } | |
1748 | of_node_put(np_phy); | |
1749 | ||
1750 | return edev; | |
1751 | } | |
1752 | ||
c5ac6116 FB |
1753 | static int dwc3_probe(struct platform_device *pdev) |
1754 | { | |
1755 | struct device *dev = &pdev->dev; | |
44feb8e6 | 1756 | struct resource *res, dwc_res; |
c5ac6116 FB |
1757 | struct dwc3 *dwc; |
1758 | ||
1759 | int ret; | |
1760 | ||
1761 | void __iomem *regs; | |
1762 | ||
1763 | dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); | |
1764 | if (!dwc) | |
1765 | return -ENOMEM; | |
1766 | ||
1767 | dwc->dev = dev; | |
1768 | ||
1769 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1770 | if (!res) { | |
1771 | dev_err(dev, "missing memory resource\n"); | |
1772 | return -ENODEV; | |
1773 | } | |
1774 | ||
1775 | dwc->xhci_resources[0].start = res->start; | |
1776 | dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + | |
1777 | DWC3_XHCI_REGS_END; | |
1778 | dwc->xhci_resources[0].flags = res->flags; | |
1779 | dwc->xhci_resources[0].name = res->name; | |
1780 | ||
c5ac6116 FB |
1781 | /* |
1782 | * Request memory region but exclude xHCI regs, | |
1783 | * since it will be requested by the xhci-plat driver. | |
1784 | */ | |
44feb8e6 MY |
1785 | dwc_res = *res; |
1786 | dwc_res.start += DWC3_GLOBALS_REGS_START; | |
1787 | ||
1788 | regs = devm_ioremap_resource(dev, &dwc_res); | |
1789 | if (IS_ERR(regs)) | |
1790 | return PTR_ERR(regs); | |
c5ac6116 FB |
1791 | |
1792 | dwc->regs = regs; | |
44feb8e6 | 1793 | dwc->regs_size = resource_size(&dwc_res); |
c5ac6116 FB |
1794 | |
1795 | dwc3_get_properties(dwc); | |
1796 | ||
babbdfc9 | 1797 | dwc->reset = devm_reset_control_array_get_optional_shared(dev); |
2a735e4b DC |
1798 | if (IS_ERR(dwc->reset)) { |
1799 | ret = PTR_ERR(dwc->reset); | |
1800 | goto put_usb_psy; | |
1801 | } | |
fe8abf33 | 1802 | |
61527777 | 1803 | if (dev->of_node) { |
61527777 HG |
1804 | /* |
1805 | * Clocks are optional, but new DT platforms should support all | |
1806 | * clocks as required by the DT-binding. | |
4e64cd77 PG |
1807 | * Some devices have different clock names in legacy device trees, |
1808 | * check for them to retain backwards compatibility. | |
61527777 | 1809 | */ |
33fb697e | 1810 | dwc->bus_clk = devm_clk_get_optional(dev, "bus_early"); |
2a735e4b DC |
1811 | if (IS_ERR(dwc->bus_clk)) { |
1812 | ret = dev_err_probe(dev, PTR_ERR(dwc->bus_clk), | |
1813 | "could not get bus clock\n"); | |
1814 | goto put_usb_psy; | |
1815 | } | |
33fb697e | 1816 | |
4e64cd77 PG |
1817 | if (dwc->bus_clk == NULL) { |
1818 | dwc->bus_clk = devm_clk_get_optional(dev, "bus_clk"); | |
2a735e4b DC |
1819 | if (IS_ERR(dwc->bus_clk)) { |
1820 | ret = dev_err_probe(dev, PTR_ERR(dwc->bus_clk), | |
1821 | "could not get bus clock\n"); | |
1822 | goto put_usb_psy; | |
1823 | } | |
4e64cd77 PG |
1824 | } |
1825 | ||
33fb697e | 1826 | dwc->ref_clk = devm_clk_get_optional(dev, "ref"); |
2a735e4b DC |
1827 | if (IS_ERR(dwc->ref_clk)) { |
1828 | ret = dev_err_probe(dev, PTR_ERR(dwc->ref_clk), | |
1829 | "could not get ref clock\n"); | |
1830 | goto put_usb_psy; | |
1831 | } | |
33fb697e | 1832 | |
4e64cd77 PG |
1833 | if (dwc->ref_clk == NULL) { |
1834 | dwc->ref_clk = devm_clk_get_optional(dev, "ref_clk"); | |
2a735e4b DC |
1835 | if (IS_ERR(dwc->ref_clk)) { |
1836 | ret = dev_err_probe(dev, PTR_ERR(dwc->ref_clk), | |
1837 | "could not get ref clock\n"); | |
1838 | goto put_usb_psy; | |
1839 | } | |
4e64cd77 PG |
1840 | } |
1841 | ||
33fb697e | 1842 | dwc->susp_clk = devm_clk_get_optional(dev, "suspend"); |
2a735e4b DC |
1843 | if (IS_ERR(dwc->susp_clk)) { |
1844 | ret = dev_err_probe(dev, PTR_ERR(dwc->susp_clk), | |
1845 | "could not get suspend clock\n"); | |
1846 | goto put_usb_psy; | |
1847 | } | |
4e64cd77 PG |
1848 | |
1849 | if (dwc->susp_clk == NULL) { | |
1850 | dwc->susp_clk = devm_clk_get_optional(dev, "suspend_clk"); | |
2a735e4b DC |
1851 | if (IS_ERR(dwc->susp_clk)) { |
1852 | ret = dev_err_probe(dev, PTR_ERR(dwc->susp_clk), | |
1853 | "could not get suspend clock\n"); | |
1854 | goto put_usb_psy; | |
1855 | } | |
4e64cd77 | 1856 | } |
61527777 | 1857 | } |
fe8abf33 MY |
1858 | |
1859 | ret = reset_control_deassert(dwc->reset); | |
1860 | if (ret) | |
2a735e4b | 1861 | goto put_usb_psy; |
fe8abf33 | 1862 | |
33fb697e | 1863 | ret = dwc3_clk_enable(dwc); |
fe8abf33 MY |
1864 | if (ret) |
1865 | goto assert_reset; | |
1866 | ||
dc1b5d9a EBS |
1867 | if (!dwc3_core_is_valid(dwc)) { |
1868 | dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); | |
1869 | ret = -ENODEV; | |
1870 | goto disable_clks; | |
1871 | } | |
1872 | ||
6c89cce0 | 1873 | platform_set_drvdata(pdev, dwc); |
2917e718 | 1874 | dwc3_cache_hwparams(dwc); |
6c89cce0 | 1875 | |
91062e66 WW |
1876 | if (!dwc->sysdev_is_parent && |
1877 | DWC3_GHWPARAMS0_AWIDTH(dwc->hwparams.hwparams0) == 64) { | |
1878 | ret = dma_set_mask_and_coherent(dwc->sysdev, DMA_BIT_MASK(64)); | |
1879 | if (ret) | |
1880 | goto disable_clks; | |
1881 | } | |
1882 | ||
72246da4 | 1883 | spin_lock_init(&dwc->lock); |
f88359e1 | 1884 | mutex_init(&dwc->mutex); |
72246da4 | 1885 | |
fc8bb91b FB |
1886 | pm_runtime_set_active(dev); |
1887 | pm_runtime_use_autosuspend(dev); | |
1888 | pm_runtime_set_autosuspend_delay(dev, DWC3_DEFAULT_AUTOSUSPEND_DELAY); | |
802ca850 | 1889 | pm_runtime_enable(dev); |
32808237 RQ |
1890 | ret = pm_runtime_get_sync(dev); |
1891 | if (ret < 0) | |
1892 | goto err1; | |
1893 | ||
802ca850 | 1894 | pm_runtime_forbid(dev); |
72246da4 | 1895 | |
3921426b FB |
1896 | ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); |
1897 | if (ret) { | |
1898 | dev_err(dwc->dev, "failed to allocate event buffers\n"); | |
1899 | ret = -ENOMEM; | |
32808237 | 1900 | goto err2; |
3921426b FB |
1901 | } |
1902 | ||
d182c2e1 AS |
1903 | dwc->edev = dwc3_get_extcon(dwc); |
1904 | if (IS_ERR(dwc->edev)) { | |
1905 | ret = dev_err_probe(dwc->dev, PTR_ERR(dwc->edev), "failed to get extcon\n"); | |
1906 | goto err3; | |
1907 | } | |
1908 | ||
9d6173e1 TN |
1909 | ret = dwc3_get_dr_mode(dwc); |
1910 | if (ret) | |
1911 | goto err3; | |
32a4a135 | 1912 | |
c499ff71 FB |
1913 | ret = dwc3_alloc_scratch_buffers(dwc); |
1914 | if (ret) | |
32808237 | 1915 | goto err3; |
c499ff71 | 1916 | |
72246da4 FB |
1917 | ret = dwc3_core_init(dwc); |
1918 | if (ret) { | |
0c0a20f6 | 1919 | dev_err_probe(dev, ret, "failed to initialize core\n"); |
32808237 | 1920 | goto err4; |
72246da4 FB |
1921 | } |
1922 | ||
7ac51a12 | 1923 | dwc3_check_params(dwc); |
84524d12 | 1924 | dwc3_debugfs_init(dwc); |
2c7f1bd9 | 1925 | |
5f94adfe FB |
1926 | ret = dwc3_core_init_mode(dwc); |
1927 | if (ret) | |
32808237 | 1928 | goto err5; |
72246da4 | 1929 | |
fc8bb91b | 1930 | pm_runtime_put(dev); |
72246da4 FB |
1931 | |
1932 | return 0; | |
1933 | ||
32808237 | 1934 | err5: |
84524d12 | 1935 | dwc3_debugfs_exit(dwc); |
c499ff71 | 1936 | dwc3_event_buffers_cleanup(dwc); |
03c1fd62 | 1937 | |
03c1fd62 LJ |
1938 | usb_phy_set_suspend(dwc->usb2_phy, 1); |
1939 | usb_phy_set_suspend(dwc->usb3_phy, 1); | |
1940 | phy_power_off(dwc->usb2_generic_phy); | |
1941 | phy_power_off(dwc->usb3_generic_phy); | |
1942 | ||
d2ac7bef JH |
1943 | usb_phy_shutdown(dwc->usb2_phy); |
1944 | usb_phy_shutdown(dwc->usb3_phy); | |
1945 | phy_exit(dwc->usb2_generic_phy); | |
1946 | phy_exit(dwc->usb3_generic_phy); | |
1947 | ||
08fd9a82 | 1948 | dwc3_ulpi_exit(dwc); |
57303488 | 1949 | |
32808237 | 1950 | err4: |
c499ff71 | 1951 | dwc3_free_scratch_buffers(dwc); |
72246da4 | 1952 | |
32808237 | 1953 | err3: |
3921426b FB |
1954 | dwc3_free_event_buffers(dwc); |
1955 | ||
32808237 RQ |
1956 | err2: |
1957 | pm_runtime_allow(&pdev->dev); | |
1958 | ||
1959 | err1: | |
1960 | pm_runtime_put_sync(&pdev->dev); | |
1961 | pm_runtime_disable(&pdev->dev); | |
1962 | ||
dc1b5d9a | 1963 | disable_clks: |
33fb697e | 1964 | dwc3_clk_disable(dwc); |
fe8abf33 MY |
1965 | assert_reset: |
1966 | reset_control_assert(dwc->reset); | |
2a735e4b | 1967 | put_usb_psy: |
b0bf77cd | 1968 | if (dwc->usb_psy) |
6f0764b5 RC |
1969 | power_supply_put(dwc->usb_psy); |
1970 | ||
72246da4 FB |
1971 | return ret; |
1972 | } | |
1973 | ||
fb4e98ab | 1974 | static int dwc3_remove(struct platform_device *pdev) |
72246da4 | 1975 | { |
72246da4 | 1976 | struct dwc3 *dwc = platform_get_drvdata(pdev); |
3da1f6ee | 1977 | |
fc8bb91b | 1978 | pm_runtime_get_sync(&pdev->dev); |
72246da4 | 1979 | |
dc99f16f | 1980 | dwc3_core_exit_mode(dwc); |
2a042767 | 1981 | dwc3_debugfs_exit(dwc); |
8ba007a9 | 1982 | |
72246da4 | 1983 | dwc3_core_exit(dwc); |
88bc9d19 | 1984 | dwc3_ulpi_exit(dwc); |
72246da4 | 1985 | |
72246da4 | 1986 | pm_runtime_disable(&pdev->dev); |
266d0493 LJ |
1987 | pm_runtime_put_noidle(&pdev->dev); |
1988 | pm_runtime_set_suspended(&pdev->dev); | |
72246da4 | 1989 | |
fc8bb91b FB |
1990 | dwc3_free_event_buffers(dwc); |
1991 | dwc3_free_scratch_buffers(dwc); | |
1992 | ||
b0bf77cd | 1993 | if (dwc->usb_psy) |
6f0764b5 RC |
1994 | power_supply_put(dwc->usb_psy); |
1995 | ||
72246da4 FB |
1996 | return 0; |
1997 | } | |
1998 | ||
fc8bb91b | 1999 | #ifdef CONFIG_PM |
fe8abf33 MY |
2000 | static int dwc3_core_init_for_resume(struct dwc3 *dwc) |
2001 | { | |
2002 | int ret; | |
2003 | ||
2004 | ret = reset_control_deassert(dwc->reset); | |
2005 | if (ret) | |
2006 | return ret; | |
2007 | ||
33fb697e | 2008 | ret = dwc3_clk_enable(dwc); |
fe8abf33 MY |
2009 | if (ret) |
2010 | goto assert_reset; | |
2011 | ||
fe8abf33 MY |
2012 | ret = dwc3_core_init(dwc); |
2013 | if (ret) | |
2014 | goto disable_clks; | |
2015 | ||
2016 | return 0; | |
2017 | ||
2018 | disable_clks: | |
33fb697e | 2019 | dwc3_clk_disable(dwc); |
fe8abf33 MY |
2020 | assert_reset: |
2021 | reset_control_assert(dwc->reset); | |
2022 | ||
2023 | return ret; | |
2024 | } | |
2025 | ||
c4a5153e | 2026 | static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) |
7415f17c | 2027 | { |
fc8bb91b | 2028 | unsigned long flags; |
bcb12877 | 2029 | u32 reg; |
7415f17c | 2030 | |
689bf72c MG |
2031 | switch (dwc->current_dr_role) { |
2032 | case DWC3_GCTL_PRTCAP_DEVICE: | |
0227cc84 LJ |
2033 | if (pm_runtime_suspended(dwc->dev)) |
2034 | break; | |
7415f17c | 2035 | dwc3_gadget_suspend(dwc); |
41a91c60 | 2036 | synchronize_irq(dwc->irq_gadget); |
689bf72c | 2037 | dwc3_core_exit(dwc); |
51f5d49a | 2038 | break; |
689bf72c | 2039 | case DWC3_GCTL_PRTCAP_HOST: |
e3fafbd8 | 2040 | if (!PMSG_IS_AUTO(msg) && !device_may_wakeup(dwc->dev)) { |
c4a5153e | 2041 | dwc3_core_exit(dwc); |
bcb12877 MG |
2042 | break; |
2043 | } | |
2044 | ||
2045 | /* Let controller to suspend HSPHY before PHY driver suspends */ | |
2046 | if (dwc->dis_u2_susphy_quirk || | |
2047 | dwc->dis_enblslpm_quirk) { | |
2048 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); | |
2049 | reg |= DWC3_GUSB2PHYCFG_ENBLSLPM | | |
2050 | DWC3_GUSB2PHYCFG_SUSPHY; | |
2051 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); | |
2052 | ||
2053 | /* Give some time for USB2 PHY to suspend */ | |
2054 | usleep_range(5000, 6000); | |
2055 | } | |
2056 | ||
2057 | phy_pm_runtime_put_sync(dwc->usb2_generic_phy); | |
2058 | phy_pm_runtime_put_sync(dwc->usb3_generic_phy); | |
c4a5153e | 2059 | break; |
f09cc79b RQ |
2060 | case DWC3_GCTL_PRTCAP_OTG: |
2061 | /* do nothing during runtime_suspend */ | |
2062 | if (PMSG_IS_AUTO(msg)) | |
2063 | break; | |
2064 | ||
2065 | if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { | |
2066 | spin_lock_irqsave(&dwc->lock, flags); | |
2067 | dwc3_gadget_suspend(dwc); | |
2068 | spin_unlock_irqrestore(&dwc->lock, flags); | |
41a91c60 | 2069 | synchronize_irq(dwc->irq_gadget); |
f09cc79b RQ |
2070 | } |
2071 | ||
2072 | dwc3_otg_exit(dwc); | |
2073 | dwc3_core_exit(dwc); | |
2074 | break; | |
7415f17c | 2075 | default: |
51f5d49a | 2076 | /* do nothing */ |
7415f17c FB |
2077 | break; |
2078 | } | |
2079 | ||
7415f17c FB |
2080 | return 0; |
2081 | } | |
2082 | ||
c4a5153e | 2083 | static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) |
7415f17c | 2084 | { |
fc8bb91b | 2085 | unsigned long flags; |
57303488 | 2086 | int ret; |
bcb12877 | 2087 | u32 reg; |
7415f17c | 2088 | |
689bf72c MG |
2089 | switch (dwc->current_dr_role) { |
2090 | case DWC3_GCTL_PRTCAP_DEVICE: | |
fe8abf33 | 2091 | ret = dwc3_core_init_for_resume(dwc); |
689bf72c MG |
2092 | if (ret) |
2093 | return ret; | |
5c4ad318 | 2094 | |
7d11c3ac | 2095 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); |
7415f17c | 2096 | dwc3_gadget_resume(dwc); |
689bf72c MG |
2097 | break; |
2098 | case DWC3_GCTL_PRTCAP_HOST: | |
e3fafbd8 | 2099 | if (!PMSG_IS_AUTO(msg) && !device_may_wakeup(dwc->dev)) { |
fe8abf33 | 2100 | ret = dwc3_core_init_for_resume(dwc); |
c4a5153e MG |
2101 | if (ret) |
2102 | return ret; | |
7d11c3ac | 2103 | dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); |
bcb12877 | 2104 | break; |
c4a5153e | 2105 | } |
bcb12877 MG |
2106 | /* Restore GUSB2PHYCFG bits that were modified in suspend */ |
2107 | reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); | |
2108 | if (dwc->dis_u2_susphy_quirk) | |
2109 | reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; | |
2110 | ||
2111 | if (dwc->dis_enblslpm_quirk) | |
2112 | reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; | |
2113 | ||
2114 | dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); | |
2115 | ||
2116 | phy_pm_runtime_get_sync(dwc->usb2_generic_phy); | |
2117 | phy_pm_runtime_get_sync(dwc->usb3_generic_phy); | |
f09cc79b RQ |
2118 | break; |
2119 | case DWC3_GCTL_PRTCAP_OTG: | |
2120 | /* nothing to do on runtime_resume */ | |
2121 | if (PMSG_IS_AUTO(msg)) | |
2122 | break; | |
2123 | ||
0e5a3c82 | 2124 | ret = dwc3_core_init_for_resume(dwc); |
f09cc79b RQ |
2125 | if (ret) |
2126 | return ret; | |
2127 | ||
2128 | dwc3_set_prtcap(dwc, dwc->current_dr_role); | |
2129 | ||
2130 | dwc3_otg_init(dwc); | |
2131 | if (dwc->current_otg_role == DWC3_OTG_ROLE_HOST) { | |
2132 | dwc3_otg_host_init(dwc); | |
2133 | } else if (dwc->current_otg_role == DWC3_OTG_ROLE_DEVICE) { | |
2134 | spin_lock_irqsave(&dwc->lock, flags); | |
2135 | dwc3_gadget_resume(dwc); | |
2136 | spin_unlock_irqrestore(&dwc->lock, flags); | |
c4a5153e | 2137 | } |
f09cc79b | 2138 | |
c4a5153e | 2139 | break; |
7415f17c FB |
2140 | default: |
2141 | /* do nothing */ | |
2142 | break; | |
2143 | } | |
2144 | ||
fc8bb91b FB |
2145 | return 0; |
2146 | } | |
2147 | ||
2148 | static int dwc3_runtime_checks(struct dwc3 *dwc) | |
2149 | { | |
689bf72c | 2150 | switch (dwc->current_dr_role) { |
c4a5153e | 2151 | case DWC3_GCTL_PRTCAP_DEVICE: |
fc8bb91b FB |
2152 | if (dwc->connected) |
2153 | return -EBUSY; | |
2154 | break; | |
c4a5153e | 2155 | case DWC3_GCTL_PRTCAP_HOST: |
fc8bb91b FB |
2156 | default: |
2157 | /* do nothing */ | |
2158 | break; | |
2159 | } | |
2160 | ||
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | static int dwc3_runtime_suspend(struct device *dev) | |
2165 | { | |
2166 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2167 | int ret; | |
2168 | ||
2169 | if (dwc3_runtime_checks(dwc)) | |
2170 | return -EBUSY; | |
2171 | ||
c4a5153e | 2172 | ret = dwc3_suspend_common(dwc, PMSG_AUTO_SUSPEND); |
fc8bb91b FB |
2173 | if (ret) |
2174 | return ret; | |
2175 | ||
fc8bb91b FB |
2176 | return 0; |
2177 | } | |
2178 | ||
2179 | static int dwc3_runtime_resume(struct device *dev) | |
2180 | { | |
2181 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2182 | int ret; | |
2183 | ||
c4a5153e | 2184 | ret = dwc3_resume_common(dwc, PMSG_AUTO_RESUME); |
fc8bb91b FB |
2185 | if (ret) |
2186 | return ret; | |
2187 | ||
689bf72c MG |
2188 | switch (dwc->current_dr_role) { |
2189 | case DWC3_GCTL_PRTCAP_DEVICE: | |
fc8bb91b FB |
2190 | dwc3_gadget_process_pending_events(dwc); |
2191 | break; | |
689bf72c | 2192 | case DWC3_GCTL_PRTCAP_HOST: |
fc8bb91b FB |
2193 | default: |
2194 | /* do nothing */ | |
2195 | break; | |
2196 | } | |
2197 | ||
2198 | pm_runtime_mark_last_busy(dev); | |
2199 | ||
2200 | return 0; | |
2201 | } | |
2202 | ||
2203 | static int dwc3_runtime_idle(struct device *dev) | |
2204 | { | |
2205 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2206 | ||
689bf72c MG |
2207 | switch (dwc->current_dr_role) { |
2208 | case DWC3_GCTL_PRTCAP_DEVICE: | |
fc8bb91b FB |
2209 | if (dwc3_runtime_checks(dwc)) |
2210 | return -EBUSY; | |
2211 | break; | |
689bf72c | 2212 | case DWC3_GCTL_PRTCAP_HOST: |
fc8bb91b FB |
2213 | default: |
2214 | /* do nothing */ | |
2215 | break; | |
2216 | } | |
2217 | ||
2218 | pm_runtime_mark_last_busy(dev); | |
2219 | pm_runtime_autosuspend(dev); | |
2220 | ||
2221 | return 0; | |
2222 | } | |
2223 | #endif /* CONFIG_PM */ | |
2224 | ||
2225 | #ifdef CONFIG_PM_SLEEP | |
2226 | static int dwc3_suspend(struct device *dev) | |
2227 | { | |
2228 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2229 | int ret; | |
2230 | ||
c4a5153e | 2231 | ret = dwc3_suspend_common(dwc, PMSG_SUSPEND); |
fc8bb91b FB |
2232 | if (ret) |
2233 | return ret; | |
2234 | ||
2235 | pinctrl_pm_select_sleep_state(dev); | |
2236 | ||
2237 | return 0; | |
2238 | } | |
2239 | ||
2240 | static int dwc3_resume(struct device *dev) | |
2241 | { | |
2242 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2243 | int ret; | |
2244 | ||
2245 | pinctrl_pm_select_default_state(dev); | |
2246 | ||
c4a5153e | 2247 | ret = dwc3_resume_common(dwc, PMSG_RESUME); |
fc8bb91b FB |
2248 | if (ret) |
2249 | return ret; | |
2250 | ||
7415f17c FB |
2251 | pm_runtime_disable(dev); |
2252 | pm_runtime_set_active(dev); | |
2253 | pm_runtime_enable(dev); | |
2254 | ||
2255 | return 0; | |
2256 | } | |
f580170f YC |
2257 | |
2258 | static void dwc3_complete(struct device *dev) | |
2259 | { | |
2260 | struct dwc3 *dwc = dev_get_drvdata(dev); | |
2261 | u32 reg; | |
2262 | ||
2263 | if (dwc->current_dr_role == DWC3_GCTL_PRTCAP_HOST && | |
2264 | dwc->dis_split_quirk) { | |
2265 | reg = dwc3_readl(dwc->regs, DWC3_GUCTL3); | |
2266 | reg |= DWC3_GUCTL3_SPLITDISABLE; | |
2267 | dwc3_writel(dwc->regs, DWC3_GUCTL3, reg); | |
2268 | } | |
2269 | } | |
2270 | #else | |
2271 | #define dwc3_complete NULL | |
7f370ed0 | 2272 | #endif /* CONFIG_PM_SLEEP */ |
7415f17c FB |
2273 | |
2274 | static const struct dev_pm_ops dwc3_dev_pm_ops = { | |
7415f17c | 2275 | SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume) |
f580170f | 2276 | .complete = dwc3_complete, |
fc8bb91b FB |
2277 | SET_RUNTIME_PM_OPS(dwc3_runtime_suspend, dwc3_runtime_resume, |
2278 | dwc3_runtime_idle) | |
7415f17c FB |
2279 | }; |
2280 | ||
5088b6f5 KVA |
2281 | #ifdef CONFIG_OF |
2282 | static const struct of_device_id of_dwc3_match[] = { | |
22a5aa17 FB |
2283 | { |
2284 | .compatible = "snps,dwc3" | |
2285 | }, | |
5088b6f5 KVA |
2286 | { |
2287 | .compatible = "synopsys,dwc3" | |
2288 | }, | |
2289 | { }, | |
2290 | }; | |
2291 | MODULE_DEVICE_TABLE(of, of_dwc3_match); | |
2292 | #endif | |
2293 | ||
404905a6 HK |
2294 | #ifdef CONFIG_ACPI |
2295 | ||
2296 | #define ACPI_ID_INTEL_BSW "808622B7" | |
2297 | ||
2298 | static const struct acpi_device_id dwc3_acpi_match[] = { | |
2299 | { ACPI_ID_INTEL_BSW, 0 }, | |
2300 | { }, | |
2301 | }; | |
2302 | MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match); | |
2303 | #endif | |
2304 | ||
72246da4 FB |
2305 | static struct platform_driver dwc3_driver = { |
2306 | .probe = dwc3_probe, | |
7690417d | 2307 | .remove = dwc3_remove, |
72246da4 FB |
2308 | .driver = { |
2309 | .name = "dwc3", | |
5088b6f5 | 2310 | .of_match_table = of_match_ptr(of_dwc3_match), |
404905a6 | 2311 | .acpi_match_table = ACPI_PTR(dwc3_acpi_match), |
7f370ed0 | 2312 | .pm = &dwc3_dev_pm_ops, |
72246da4 | 2313 | }, |
72246da4 FB |
2314 | }; |
2315 | ||
b1116dcc TK |
2316 | module_platform_driver(dwc3_driver); |
2317 | ||
7ae4fc4d | 2318 | MODULE_ALIAS("platform:dwc3"); |
72246da4 | 2319 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); |
5945f789 | 2320 | MODULE_LICENSE("GPL v2"); |
72246da4 | 2321 | MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); |