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72246da4 FB |
1 | /** |
2 | * dwc3-pci.c - PCI 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 | ||
19 | #include <linux/kernel.h> | |
46a57283 | 20 | #include <linux/module.h> |
72246da4 FB |
21 | #include <linux/slab.h> |
22 | #include <linux/pci.h> | |
e9af9229 | 23 | #include <linux/pm_runtime.h> |
72246da4 | 24 | #include <linux/platform_device.h> |
a89d977c HK |
25 | #include <linux/gpio/consumer.h> |
26 | #include <linux/acpi.h> | |
cf48305d | 27 | #include <linux/delay.h> |
8f317b47 | 28 | |
9a5a0783 JY |
29 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd |
30 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce | |
31 | #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf | |
32 | #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 | |
33 | #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e | |
34 | #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 | |
35 | #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 | |
36 | #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 | |
b4c580a4 | 37 | #define PCI_DEVICE_ID_INTEL_BXT 0x0aaa |
1ffb4d5c | 38 | #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa |
b4c580a4 | 39 | #define PCI_DEVICE_ID_INTEL_APL 0x5aaa |
4491ed50 | 40 | #define PCI_DEVICE_ID_INTEL_KBP 0xa2b0 |
8f8983a5 | 41 | #define PCI_DEVICE_ID_INTEL_GLK 0x31aa |
68217959 HK |
42 | #define PCI_DEVICE_ID_INTEL_CNPLP 0x9dee |
43 | #define PCI_DEVICE_ID_INTEL_CNPH 0xa36e | |
72246da4 | 44 | |
9cecca75 FB |
45 | #define PCI_INTEL_BXT_DSM_UUID "732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511" |
46 | #define PCI_INTEL_BXT_FUNC_PMU_PWR 4 | |
47 | #define PCI_INTEL_BXT_STATE_D0 0 | |
48 | #define PCI_INTEL_BXT_STATE_D3 3 | |
49 | ||
0f817ae6 FB |
50 | /** |
51 | * struct dwc3_pci - Driver private structure | |
52 | * @dwc3: child dwc3 platform_device | |
53 | * @pci: our link to PCI bus | |
9cecca75 FB |
54 | * @uuid: _DSM UUID |
55 | * @has_dsm_for_pm: true for devices which need to run _DSM on runtime PM | |
0f817ae6 FB |
56 | */ |
57 | struct dwc3_pci { | |
58 | struct platform_device *dwc3; | |
59 | struct pci_dev *pci; | |
9cecca75 FB |
60 | |
61 | u8 uuid[16]; | |
62 | ||
63 | unsigned int has_dsm_for_pm:1; | |
0f817ae6 FB |
64 | }; |
65 | ||
a89d977c HK |
66 | static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; |
67 | static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; | |
68 | ||
69 | static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { | |
70 | { "reset-gpios", &reset_gpios, 1 }, | |
71 | { "cs-gpios", &cs_gpios, 1 }, | |
72 | { }, | |
73 | }; | |
74 | ||
0f817ae6 | 75 | static int dwc3_pci_quirks(struct dwc3_pci *dwc) |
2cd9ddf7 | 76 | { |
0f817ae6 FB |
77 | struct platform_device *dwc3 = dwc->dwc3; |
78 | struct pci_dev *pdev = dwc->pci; | |
79 | ||
2cd9ddf7 HK |
80 | if (pdev->vendor == PCI_VENDOR_ID_AMD && |
81 | pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { | |
cf48305d HK |
82 | struct property_entry properties[] = { |
83 | PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), | |
84 | PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf), | |
85 | PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"), | |
86 | PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"), | |
87 | PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"), | |
88 | PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"), | |
89 | PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"), | |
90 | PROPERTY_ENTRY_BOOL("snps,lfps_filter_quirk"), | |
91 | PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"), | |
92 | PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"), | |
93 | PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1), | |
94 | /* | |
95 | * FIXME these quirks should be removed when AMD NL | |
96 | * tapes out | |
97 | */ | |
98 | PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"), | |
99 | PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"), | |
100 | PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"), | |
0eae2fde | 101 | PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), |
cf48305d HK |
102 | { }, |
103 | }; | |
104 | ||
105 | return platform_device_add_properties(dwc3, properties); | |
2cd9ddf7 HK |
106 | } |
107 | ||
e6fe66fe FB |
108 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
109 | int ret; | |
110 | ||
111 | struct property_entry properties[] = { | |
51c1685d | 112 | PROPERTY_ENTRY_STRING("dr_mode", "peripheral"), |
0eae2fde | 113 | PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), |
e6fe66fe FB |
114 | { } |
115 | }; | |
116 | ||
117 | ret = platform_device_add_properties(dwc3, properties); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | ||
9cecca75 FB |
121 | if (pdev->device == PCI_DEVICE_ID_INTEL_BXT || |
122 | pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) { | |
123 | acpi_str_to_uuid(PCI_INTEL_BXT_DSM_UUID, dwc->uuid); | |
124 | dwc->has_dsm_for_pm = true; | |
125 | } | |
126 | ||
e6fe66fe FB |
127 | if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) { |
128 | struct gpio_desc *gpio; | |
129 | ||
4a56e413 | 130 | ret = devm_acpi_dev_add_driver_gpios(&pdev->dev, |
e6fe66fe | 131 | acpi_dwc3_byt_gpios); |
4a56e413 AS |
132 | if (ret) |
133 | dev_dbg(&pdev->dev, "failed to add mapping table\n"); | |
e6fe66fe FB |
134 | |
135 | /* | |
136 | * These GPIOs will turn on the USB2 PHY. Note that we have to | |
137 | * put the gpio descriptors again here because the phy driver | |
138 | * might want to grab them, too. | |
139 | */ | |
140 | gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); | |
141 | if (IS_ERR(gpio)) | |
142 | return PTR_ERR(gpio); | |
143 | ||
a89d977c HK |
144 | gpiod_set_value_cansleep(gpio, 1); |
145 | gpiod_put(gpio); | |
e6fe66fe FB |
146 | |
147 | gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); | |
148 | if (IS_ERR(gpio)) | |
149 | return PTR_ERR(gpio); | |
150 | ||
151 | if (gpio) { | |
152 | gpiod_set_value_cansleep(gpio, 1); | |
153 | gpiod_put(gpio); | |
154 | usleep_range(10000, 11000); | |
155 | } | |
a89d977c HK |
156 | } |
157 | } | |
158 | ||
bb7f3d6d JY |
159 | if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && |
160 | (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || | |
161 | pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || | |
162 | pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { | |
cf48305d HK |
163 | struct property_entry properties[] = { |
164 | PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"), | |
165 | PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), | |
166 | PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"), | |
0eae2fde | 167 | PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), |
cf48305d HK |
168 | { }, |
169 | }; | |
170 | ||
171 | return platform_device_add_properties(dwc3, properties); | |
bb7f3d6d JY |
172 | } |
173 | ||
2cd9ddf7 HK |
174 | return 0; |
175 | } | |
72246da4 | 176 | |
41ac7b3a | 177 | static int dwc3_pci_probe(struct pci_dev *pci, |
72246da4 FB |
178 | const struct pci_device_id *id) |
179 | { | |
0f817ae6 | 180 | struct dwc3_pci *dwc; |
72246da4 | 181 | struct resource res[2]; |
b09e99ee | 182 | int ret; |
802ca850 | 183 | struct device *dev = &pci->dev; |
72246da4 | 184 | |
f1c7e710 | 185 | ret = pcim_enable_device(pci); |
72246da4 | 186 | if (ret) { |
802ca850 CP |
187 | dev_err(dev, "failed to enable pci device\n"); |
188 | return -ENODEV; | |
72246da4 FB |
189 | } |
190 | ||
72246da4 FB |
191 | pci_set_master(pci); |
192 | ||
0f817ae6 FB |
193 | dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); |
194 | if (!dwc) | |
195 | return -ENOMEM; | |
196 | ||
197 | dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); | |
198 | if (!dwc->dwc3) | |
f1c7e710 | 199 | return -ENOMEM; |
72246da4 FB |
200 | |
201 | memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); | |
202 | ||
203 | res[0].start = pci_resource_start(pci, 0); | |
204 | res[0].end = pci_resource_end(pci, 0); | |
205 | res[0].name = "dwc_usb3"; | |
206 | res[0].flags = IORESOURCE_MEM; | |
207 | ||
208 | res[1].start = pci->irq; | |
209 | res[1].name = "dwc_usb3"; | |
210 | res[1].flags = IORESOURCE_IRQ; | |
211 | ||
0f817ae6 | 212 | ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); |
72246da4 | 213 | if (ret) { |
802ca850 | 214 | dev_err(dev, "couldn't add resources to dwc3 device\n"); |
f1c7e710 | 215 | return ret; |
72246da4 FB |
216 | } |
217 | ||
0f817ae6 FB |
218 | dwc->pci = pci; |
219 | dwc->dwc3->dev.parent = dev; | |
220 | ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev)); | |
72246da4 | 221 | |
0f817ae6 | 222 | ret = dwc3_pci_quirks(dwc); |
474799f0 HK |
223 | if (ret) |
224 | goto err; | |
225 | ||
0f817ae6 | 226 | ret = platform_device_add(dwc->dwc3); |
72246da4 | 227 | if (ret) { |
802ca850 | 228 | dev_err(dev, "failed to register dwc3 device\n"); |
2cd9ddf7 | 229 | goto err; |
72246da4 FB |
230 | } |
231 | ||
e9af9229 FB |
232 | device_init_wakeup(dev, true); |
233 | device_set_run_wake(dev, true); | |
0f817ae6 | 234 | pci_set_drvdata(pci, dwc); |
e9af9229 FB |
235 | pm_runtime_put(dev); |
236 | ||
72246da4 | 237 | return 0; |
2cd9ddf7 | 238 | err: |
0f817ae6 | 239 | platform_device_put(dwc->dwc3); |
72246da4 FB |
240 | return ret; |
241 | } | |
242 | ||
fb4e98ab | 243 | static void dwc3_pci_remove(struct pci_dev *pci) |
72246da4 | 244 | { |
0f817ae6 FB |
245 | struct dwc3_pci *dwc = pci_get_drvdata(pci); |
246 | ||
e9af9229 FB |
247 | device_init_wakeup(&pci->dev, false); |
248 | pm_runtime_get(&pci->dev); | |
0f817ae6 | 249 | platform_device_unregister(dwc->dwc3); |
72246da4 FB |
250 | } |
251 | ||
782df20c | 252 | static const struct pci_device_id dwc3_pci_id_table[] = { |
72246da4 FB |
253 | { |
254 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
255 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), | |
256 | }, | |
41adc59c JY |
257 | { |
258 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
259 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), | |
260 | }, | |
e8095a25 JY |
261 | { |
262 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, | |
263 | PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), | |
264 | }, | |
7d643664 | 265 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, |
b62cd96d | 266 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, |
85601f8c | 267 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, |
84a2b61b HK |
268 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, |
269 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, | |
b4c580a4 | 270 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, |
1ffb4d5c | 271 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, |
b4c580a4 | 272 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, |
4491ed50 | 273 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), }, |
8f8983a5 | 274 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), }, |
68217959 HK |
275 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPLP), }, |
276 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPH), }, | |
9755449d | 277 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, |
72246da4 FB |
278 | { } /* Terminating Entry */ |
279 | }; | |
280 | MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); | |
281 | ||
36daf3aa FB |
282 | #if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP) |
283 | static int dwc3_pci_dsm(struct dwc3_pci *dwc, int param) | |
284 | { | |
285 | union acpi_object *obj; | |
286 | union acpi_object tmp; | |
287 | union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp); | |
288 | ||
289 | if (!dwc->has_dsm_for_pm) | |
290 | return 0; | |
291 | ||
292 | tmp.type = ACPI_TYPE_INTEGER; | |
293 | tmp.integer.value = param; | |
294 | ||
295 | obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), dwc->uuid, | |
296 | 1, PCI_INTEL_BXT_FUNC_PMU_PWR, &argv4); | |
297 | if (!obj) { | |
298 | dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n"); | |
299 | return -EIO; | |
300 | } | |
301 | ||
302 | ACPI_FREE(obj); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | #endif /* CONFIG_PM || CONFIG_PM_SLEEP */ | |
307 | ||
e9af9229 FB |
308 | #ifdef CONFIG_PM |
309 | static int dwc3_pci_runtime_suspend(struct device *dev) | |
310 | { | |
9cecca75 FB |
311 | struct dwc3_pci *dwc = dev_get_drvdata(dev); |
312 | ||
e9af9229 | 313 | if (device_run_wake(dev)) |
9cecca75 | 314 | return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); |
e9af9229 FB |
315 | |
316 | return -EBUSY; | |
317 | } | |
318 | ||
f6c274e1 FB |
319 | static int dwc3_pci_runtime_resume(struct device *dev) |
320 | { | |
0f817ae6 FB |
321 | struct dwc3_pci *dwc = dev_get_drvdata(dev); |
322 | struct platform_device *dwc3 = dwc->dwc3; | |
9cecca75 FB |
323 | int ret; |
324 | ||
325 | ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); | |
326 | if (ret) | |
327 | return ret; | |
f6c274e1 FB |
328 | |
329 | return pm_runtime_get(&dwc3->dev); | |
330 | } | |
696118c0 | 331 | #endif /* CONFIG_PM */ |
f6c274e1 | 332 | |
696118c0 | 333 | #ifdef CONFIG_PM_SLEEP |
9cecca75 | 334 | static int dwc3_pci_suspend(struct device *dev) |
e9af9229 | 335 | { |
9cecca75 FB |
336 | struct dwc3_pci *dwc = dev_get_drvdata(dev); |
337 | ||
338 | return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); | |
339 | } | |
340 | ||
341 | static int dwc3_pci_resume(struct device *dev) | |
342 | { | |
343 | struct dwc3_pci *dwc = dev_get_drvdata(dev); | |
344 | ||
345 | return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); | |
e9af9229 | 346 | } |
696118c0 | 347 | #endif /* CONFIG_PM_SLEEP */ |
e9af9229 FB |
348 | |
349 | static struct dev_pm_ops dwc3_pci_dev_pm_ops = { | |
9cecca75 | 350 | SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) |
f6c274e1 | 351 | SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume, |
e9af9229 FB |
352 | NULL) |
353 | }; | |
354 | ||
72246da4 | 355 | static struct pci_driver dwc3_pci_driver = { |
0949e99b | 356 | .name = "dwc3-pci", |
72246da4 FB |
357 | .id_table = dwc3_pci_id_table, |
358 | .probe = dwc3_pci_probe, | |
7690417d | 359 | .remove = dwc3_pci_remove, |
e9af9229 FB |
360 | .driver = { |
361 | .pm = &dwc3_pci_dev_pm_ops, | |
362 | } | |
72246da4 FB |
363 | }; |
364 | ||
365 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
5945f789 | 366 | MODULE_LICENSE("GPL v2"); |
72246da4 FB |
367 | MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); |
368 | ||
95656336 | 369 | module_pci_driver(dwc3_pci_driver); |