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19#include <linux/kernel.h>
20#include <linux/module.h>
21#include <linux/slab.h>
22#include <linux/pci.h>
23#include <linux/pm_runtime.h>
24#include <linux/platform_device.h>
25#include <linux/gpio/consumer.h>
26#include <linux/acpi.h>
27#include <linux/delay.h>
28
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
37#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
38#define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa
39#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
40#define PCI_DEVICE_ID_INTEL_KBP 0xa2b0
41#define PCI_DEVICE_ID_INTEL_GLK 0x31aa
42#define PCI_DEVICE_ID_INTEL_CNPLP 0x9dee
43#define PCI_DEVICE_ID_INTEL_CNPH 0xa36e
44
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
50
51
52
53
54
55
56
57struct dwc3_pci {
58 struct platform_device *dwc3;
59 struct pci_dev *pci;
60
61 u8 uuid[16];
62
63 unsigned int has_dsm_for_pm:1;
64};
65
66static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
67static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
68
69static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
70 { "reset-gpios", &reset_gpios, 1 },
71 { "cs-gpios", &cs_gpios, 1 },
72 { },
73};
74
75static int dwc3_pci_quirks(struct dwc3_pci *dwc)
76{
77 struct platform_device *dwc3 = dwc->dwc3;
78 struct pci_dev *pdev = dwc->pci;
79
80 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
81 pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
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
96
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"),
101 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
102 { },
103 };
104
105 return platform_device_add_properties(dwc3, properties);
106 }
107
108 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
109 int ret;
110
111 struct property_entry properties[] = {
112 PROPERTY_ENTRY_STRING("dr_mode", "peripheral"),
113 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
114 { }
115 };
116
117 ret = platform_device_add_properties(dwc3, properties);
118 if (ret < 0)
119 return ret;
120
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
127 if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
128 struct gpio_desc *gpio;
129
130 ret = devm_acpi_dev_add_driver_gpios(&pdev->dev,
131 acpi_dwc3_byt_gpios);
132 if (ret)
133 dev_dbg(&pdev->dev, "failed to add mapping table\n");
134
135
136
137
138
139
140 gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
141 if (IS_ERR(gpio))
142 return PTR_ERR(gpio);
143
144 gpiod_set_value_cansleep(gpio, 1);
145 gpiod_put(gpio);
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 }
156 }
157 }
158
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)) {
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"),
167 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
168 { },
169 };
170
171 return platform_device_add_properties(dwc3, properties);
172 }
173
174 return 0;
175}
176
177static int dwc3_pci_probe(struct pci_dev *pci,
178 const struct pci_device_id *id)
179{
180 struct dwc3_pci *dwc;
181 struct resource res[2];
182 int ret;
183 struct device *dev = &pci->dev;
184
185 ret = pcim_enable_device(pci);
186 if (ret) {
187 dev_err(dev, "failed to enable pci device\n");
188 return -ENODEV;
189 }
190
191 pci_set_master(pci);
192
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)
199 return -ENOMEM;
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
212 ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));
213 if (ret) {
214 dev_err(dev, "couldn't add resources to dwc3 device\n");
215 return ret;
216 }
217
218 dwc->pci = pci;
219 dwc->dwc3->dev.parent = dev;
220 ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));
221
222 ret = dwc3_pci_quirks(dwc);
223 if (ret)
224 goto err;
225
226 ret = platform_device_add(dwc->dwc3);
227 if (ret) {
228 dev_err(dev, "failed to register dwc3 device\n");
229 goto err;
230 }
231
232 device_init_wakeup(dev, true);
233 device_set_run_wake(dev, true);
234 pci_set_drvdata(pci, dwc);
235 pm_runtime_put(dev);
236
237 return 0;
238err:
239 platform_device_put(dwc->dwc3);
240 return ret;
241}
242
243static void dwc3_pci_remove(struct pci_dev *pci)
244{
245 struct dwc3_pci *dwc = pci_get_drvdata(pci);
246
247 device_init_wakeup(&pci->dev, false);
248 pm_runtime_get(&pci->dev);
249 platform_device_unregister(dwc->dwc3);
250}
251
252static const struct pci_device_id dwc3_pci_id_table[] = {
253 {
254 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
255 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
256 },
257 {
258 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
259 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
260 },
261 {
262 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
263 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
264 },
265 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
266 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
267 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
268 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
269 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
270 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
271 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
272 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
273 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), },
274 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), },
275 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPLP), },
276 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPH), },
277 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
278 { }
279};
280MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
281
282#if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP)
283static 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
307
308#ifdef CONFIG_PM
309static int dwc3_pci_runtime_suspend(struct device *dev)
310{
311 struct dwc3_pci *dwc = dev_get_drvdata(dev);
312
313 if (device_run_wake(dev))
314 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
315
316 return -EBUSY;
317}
318
319static int dwc3_pci_runtime_resume(struct device *dev)
320{
321 struct dwc3_pci *dwc = dev_get_drvdata(dev);
322 struct platform_device *dwc3 = dwc->dwc3;
323 int ret;
324
325 ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0);
326 if (ret)
327 return ret;
328
329 return pm_runtime_get(&dwc3->dev);
330}
331#endif
332
333#ifdef CONFIG_PM_SLEEP
334static int dwc3_pci_suspend(struct device *dev)
335{
336 struct dwc3_pci *dwc = dev_get_drvdata(dev);
337
338 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
339}
340
341static 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);
346}
347#endif
348
349static struct dev_pm_ops dwc3_pci_dev_pm_ops = {
350 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
351 SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume,
352 NULL)
353};
354
355static struct pci_driver dwc3_pci_driver = {
356 .name = "dwc3-pci",
357 .id_table = dwc3_pci_id_table,
358 .probe = dwc3_pci_probe,
359 .remove = dwc3_pci_remove,
360 .driver = {
361 .pm = &dwc3_pci_dev_pm_ops,
362 }
363};
364
365MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
366MODULE_LICENSE("GPL v2");
367MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
368
369module_pci_driver(dwc3_pci_driver);
370
