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