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1/**
2 * dwc3-pci.c - PCI Specific glue layer
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5 *
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8 *
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.
12 *
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.
17 */
18
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
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
48/**
49 * struct dwc3_pci - Driver private structure
50 * @dwc3: child dwc3 platform_device
51 * @pci: our link to PCI bus
52 * @uuid: _DSM UUID
53 * @has_dsm_for_pm: true for devices which need to run _DSM on runtime PM
54 */
55struct dwc3_pci {
56 struct platform_device *dwc3;
57 struct pci_dev *pci;
58
59 u8 uuid[16];
60
61 unsigned int has_dsm_for_pm:1;
62};
63
64static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
65static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
66
67static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
68 { "reset-gpios", &reset_gpios, 1 },
69 { "cs-gpios", &cs_gpios, 1 },
70 { },
71};
72
73static int dwc3_pci_quirks(struct dwc3_pci *dwc)
74{
75 struct platform_device *dwc3 = dwc->dwc3;
76 struct pci_dev *pdev = dwc->pci;
77
78 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
79 pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
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"),
99 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
100 { },
101 };
102
103 return platform_device_add_properties(dwc3, properties);
104 }
105
106 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
107 int ret;
108
109 struct property_entry properties[] = {
110 PROPERTY_ENTRY_STRING("dr_mode", "peripheral"),
111 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
112 { }
113 };
114
115 ret = platform_device_add_properties(dwc3, properties);
116 if (ret < 0)
117 return ret;
118
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
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
140 gpiod_set_value_cansleep(gpio, 1);
141 gpiod_put(gpio);
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 }
152 }
153 }
154
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)) {
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"),
163 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
164 { },
165 };
166
167 return platform_device_add_properties(dwc3, properties);
168 }
169
170 return 0;
171}
172
173static int dwc3_pci_probe(struct pci_dev *pci,
174 const struct pci_device_id *id)
175{
176 struct dwc3_pci *dwc;
177 struct resource res[2];
178 int ret;
179 struct device *dev = &pci->dev;
180
181 ret = pcim_enable_device(pci);
182 if (ret) {
183 dev_err(dev, "failed to enable pci device\n");
184 return -ENODEV;
185 }
186
187 pci_set_master(pci);
188
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)
195 return -ENOMEM;
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
208 ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));
209 if (ret) {
210 dev_err(dev, "couldn't add resources to dwc3 device\n");
211 return ret;
212 }
213
214 dwc->pci = pci;
215 dwc->dwc3->dev.parent = dev;
216 ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));
217
218 ret = dwc3_pci_quirks(dwc);
219 if (ret)
220 goto err;
221
222 ret = platform_device_add(dwc->dwc3);
223 if (ret) {
224 dev_err(dev, "failed to register dwc3 device\n");
225 goto err;
226 }
227
228 device_init_wakeup(dev, true);
229 device_set_run_wake(dev, true);
230 pci_set_drvdata(pci, dwc);
231 pm_runtime_put(dev);
232
233 return 0;
234err:
235 platform_device_put(dwc->dwc3);
236 return ret;
237}
238
239static void dwc3_pci_remove(struct pci_dev *pci)
240{
241 struct dwc3_pci *dwc = pci_get_drvdata(pci);
242
243 device_init_wakeup(&pci->dev, false);
244 pm_runtime_get(&pci->dev);
245 acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
246 platform_device_unregister(dwc->dwc3);
247}
248
249static const struct pci_device_id dwc3_pci_id_table[] = {
250 {
251 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
252 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
253 },
254 {
255 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
256 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
257 },
258 {
259 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
260 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
261 },
262 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
263 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
264 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
265 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
266 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
267 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
268 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
269 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
270 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), },
271 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), },
272 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
273 { } /* Terminating Entry */
274};
275MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
276
277#if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP)
278static 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
303#ifdef CONFIG_PM
304static int dwc3_pci_runtime_suspend(struct device *dev)
305{
306 struct dwc3_pci *dwc = dev_get_drvdata(dev);
307
308 if (device_run_wake(dev))
309 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
310
311 return -EBUSY;
312}
313
314static int dwc3_pci_runtime_resume(struct device *dev)
315{
316 struct dwc3_pci *dwc = dev_get_drvdata(dev);
317 struct platform_device *dwc3 = dwc->dwc3;
318 int ret;
319
320 ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0);
321 if (ret)
322 return ret;
323
324 return pm_runtime_get(&dwc3->dev);
325}
326#endif /* CONFIG_PM */
327
328#ifdef CONFIG_PM_SLEEP
329static int dwc3_pci_suspend(struct device *dev)
330{
331 struct dwc3_pci *dwc = dev_get_drvdata(dev);
332
333 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
334}
335
336static 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);
341}
342#endif /* CONFIG_PM_SLEEP */
343
344static struct dev_pm_ops dwc3_pci_dev_pm_ops = {
345 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
346 SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume,
347 NULL)
348};
349
350static struct pci_driver dwc3_pci_driver = {
351 .name = "dwc3-pci",
352 .id_table = dwc3_pci_id_table,
353 .probe = dwc3_pci_probe,
354 .remove = dwc3_pci_remove,
355 .driver = {
356 .pm = &dwc3_pci_dev_pm_ops,
357 }
358};
359
360MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
361MODULE_LICENSE("GPL v2");
362MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
363
364module_pci_driver(dwc3_pci_driver);
1// SPDX-License-Identifier: GPL-2.0
2/**
3 * dwc3-pci.c - PCI Specific glue layer
4 *
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
6 *
7 * Authors: Felipe Balbi <balbi@ti.com>,
8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 */
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/slab.h>
14#include <linux/pci.h>
15#include <linux/workqueue.h>
16#include <linux/pm_runtime.h>
17#include <linux/platform_device.h>
18#include <linux/gpio/consumer.h>
19#include <linux/gpio/machine.h>
20#include <linux/acpi.h>
21#include <linux/delay.h>
22
23#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
24#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
25#define PCI_DEVICE_ID_INTEL_BSW 0x22b7
26#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
27#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
28#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
29#define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa
30#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
31#define PCI_DEVICE_ID_INTEL_KBP 0xa2b0
32#define PCI_DEVICE_ID_INTEL_CMLLP 0x02ee
33#define PCI_DEVICE_ID_INTEL_CMLH 0x06ee
34#define PCI_DEVICE_ID_INTEL_GLK 0x31aa
35#define PCI_DEVICE_ID_INTEL_CNPLP 0x9dee
36#define PCI_DEVICE_ID_INTEL_CNPH 0xa36e
37#define PCI_DEVICE_ID_INTEL_CNPV 0xa3b0
38#define PCI_DEVICE_ID_INTEL_ICLLP 0x34ee
39#define PCI_DEVICE_ID_INTEL_EHLLP 0x4b7e
40#define PCI_DEVICE_ID_INTEL_TGPLP 0xa0ee
41#define PCI_DEVICE_ID_INTEL_TGPH 0x43ee
42#define PCI_DEVICE_ID_INTEL_JSP 0x4dee
43
44#define PCI_INTEL_BXT_DSM_GUID "732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511"
45#define PCI_INTEL_BXT_FUNC_PMU_PWR 4
46#define PCI_INTEL_BXT_STATE_D0 0
47#define PCI_INTEL_BXT_STATE_D3 3
48
49#define GP_RWBAR 1
50#define GP_RWREG1 0xa0
51#define GP_RWREG1_ULPI_REFCLK_DISABLE (1 << 17)
52
53/**
54 * struct dwc3_pci - Driver private structure
55 * @dwc3: child dwc3 platform_device
56 * @pci: our link to PCI bus
57 * @guid: _DSM GUID
58 * @has_dsm_for_pm: true for devices which need to run _DSM on runtime PM
59 * @wakeup_work: work for asynchronous resume
60 */
61struct dwc3_pci {
62 struct platform_device *dwc3;
63 struct pci_dev *pci;
64
65 guid_t guid;
66
67 unsigned int has_dsm_for_pm:1;
68 struct work_struct wakeup_work;
69};
70
71static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
72static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
73
74static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
75 { "reset-gpios", &reset_gpios, 1 },
76 { "cs-gpios", &cs_gpios, 1 },
77 { },
78};
79
80static struct gpiod_lookup_table platform_bytcr_gpios = {
81 .dev_id = "0000:00:16.0",
82 .table = {
83 GPIO_LOOKUP("INT33FC:00", 54, "reset", GPIO_ACTIVE_HIGH),
84 GPIO_LOOKUP("INT33FC:02", 14, "cs", GPIO_ACTIVE_HIGH),
85 {}
86 },
87};
88
89static int dwc3_byt_enable_ulpi_refclock(struct pci_dev *pci)
90{
91 void __iomem *reg;
92 u32 value;
93
94 reg = pcim_iomap(pci, GP_RWBAR, 0);
95 if (!reg)
96 return -ENOMEM;
97
98 value = readl(reg + GP_RWREG1);
99 if (!(value & GP_RWREG1_ULPI_REFCLK_DISABLE))
100 goto unmap; /* ULPI refclk already enabled */
101
102 value &= ~GP_RWREG1_ULPI_REFCLK_DISABLE;
103 writel(value, reg + GP_RWREG1);
104 /* This comes from the Intel Android x86 tree w/o any explanation */
105 msleep(100);
106unmap:
107 pcim_iounmap(pci, reg);
108 return 0;
109}
110
111static const struct property_entry dwc3_pci_intel_properties[] = {
112 PROPERTY_ENTRY_STRING("dr_mode", "peripheral"),
113 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
114 {}
115};
116
117static const struct property_entry dwc3_pci_mrfld_properties[] = {
118 PROPERTY_ENTRY_STRING("dr_mode", "otg"),
119 PROPERTY_ENTRY_STRING("linux,extcon-name", "mrfld_bcove_pwrsrc"),
120 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
121 {}
122};
123
124static const struct property_entry dwc3_pci_amd_properties[] = {
125 PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
126 PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf),
127 PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"),
128 PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"),
129 PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"),
130 PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"),
131 PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"),
132 PROPERTY_ENTRY_BOOL("snps,lfps_filter_quirk"),
133 PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"),
134 PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"),
135 PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1),
136 /* FIXME these quirks should be removed when AMD NL tapes out */
137 PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"),
138 PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"),
139 PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"),
140 PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
141 {}
142};
143
144static int dwc3_pci_quirks(struct dwc3_pci *dwc)
145{
146 struct pci_dev *pdev = dwc->pci;
147
148 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
149 if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||
150 pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) {
151 guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);
152 dwc->has_dsm_for_pm = true;
153 }
154
155 if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
156 struct gpio_desc *gpio;
157 int ret;
158
159 /* On BYT the FW does not always enable the refclock */
160 ret = dwc3_byt_enable_ulpi_refclock(pdev);
161 if (ret)
162 return ret;
163
164 ret = devm_acpi_dev_add_driver_gpios(&pdev->dev,
165 acpi_dwc3_byt_gpios);
166 if (ret)
167 dev_dbg(&pdev->dev, "failed to add mapping table\n");
168
169 /*
170 * A lot of BYT devices lack ACPI resource entries for
171 * the GPIOs, add a fallback mapping to the reference
172 * design GPIOs which all boards seem to use.
173 */
174 gpiod_add_lookup_table(&platform_bytcr_gpios);
175
176 /*
177 * These GPIOs will turn on the USB2 PHY. Note that we have to
178 * put the gpio descriptors again here because the phy driver
179 * might want to grab them, too.
180 */
181 gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
182 if (IS_ERR(gpio))
183 return PTR_ERR(gpio);
184
185 gpiod_set_value_cansleep(gpio, 1);
186 gpiod_put(gpio);
187
188 gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
189 if (IS_ERR(gpio))
190 return PTR_ERR(gpio);
191
192 if (gpio) {
193 gpiod_set_value_cansleep(gpio, 1);
194 gpiod_put(gpio);
195 usleep_range(10000, 11000);
196 }
197 }
198 }
199
200 return 0;
201}
202
203#ifdef CONFIG_PM
204static void dwc3_pci_resume_work(struct work_struct *work)
205{
206 struct dwc3_pci *dwc = container_of(work, struct dwc3_pci, wakeup_work);
207 struct platform_device *dwc3 = dwc->dwc3;
208 int ret;
209
210 ret = pm_runtime_get_sync(&dwc3->dev);
211 if (ret) {
212 pm_runtime_put_sync_autosuspend(&dwc3->dev);
213 return;
214 }
215
216 pm_runtime_mark_last_busy(&dwc3->dev);
217 pm_runtime_put_sync_autosuspend(&dwc3->dev);
218}
219#endif
220
221static int dwc3_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
222{
223 struct property_entry *p = (struct property_entry *)id->driver_data;
224 struct dwc3_pci *dwc;
225 struct resource res[2];
226 int ret;
227 struct device *dev = &pci->dev;
228
229 ret = pcim_enable_device(pci);
230 if (ret) {
231 dev_err(dev, "failed to enable pci device\n");
232 return -ENODEV;
233 }
234
235 pci_set_master(pci);
236
237 dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL);
238 if (!dwc)
239 return -ENOMEM;
240
241 dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
242 if (!dwc->dwc3)
243 return -ENOMEM;
244
245 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
246
247 res[0].start = pci_resource_start(pci, 0);
248 res[0].end = pci_resource_end(pci, 0);
249 res[0].name = "dwc_usb3";
250 res[0].flags = IORESOURCE_MEM;
251
252 res[1].start = pci->irq;
253 res[1].name = "dwc_usb3";
254 res[1].flags = IORESOURCE_IRQ;
255
256 ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));
257 if (ret) {
258 dev_err(dev, "couldn't add resources to dwc3 device\n");
259 goto err;
260 }
261
262 dwc->pci = pci;
263 dwc->dwc3->dev.parent = dev;
264 ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));
265
266 ret = platform_device_add_properties(dwc->dwc3, p);
267 if (ret < 0)
268 goto err;
269
270 ret = dwc3_pci_quirks(dwc);
271 if (ret)
272 goto err;
273
274 ret = platform_device_add(dwc->dwc3);
275 if (ret) {
276 dev_err(dev, "failed to register dwc3 device\n");
277 goto err;
278 }
279
280 device_init_wakeup(dev, true);
281 pci_set_drvdata(pci, dwc);
282 pm_runtime_put(dev);
283#ifdef CONFIG_PM
284 INIT_WORK(&dwc->wakeup_work, dwc3_pci_resume_work);
285#endif
286
287 return 0;
288err:
289 platform_device_put(dwc->dwc3);
290 return ret;
291}
292
293static void dwc3_pci_remove(struct pci_dev *pci)
294{
295 struct dwc3_pci *dwc = pci_get_drvdata(pci);
296 struct pci_dev *pdev = dwc->pci;
297
298 if (pdev->device == PCI_DEVICE_ID_INTEL_BYT)
299 gpiod_remove_lookup_table(&platform_bytcr_gpios);
300#ifdef CONFIG_PM
301 cancel_work_sync(&dwc->wakeup_work);
302#endif
303 device_init_wakeup(&pci->dev, false);
304 pm_runtime_get(&pci->dev);
305 platform_device_unregister(dwc->dwc3);
306}
307
308static const struct pci_device_id dwc3_pci_id_table[] = {
309 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_BSW),
310 (kernel_ulong_t) &dwc3_pci_intel_properties },
311
312 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_BYT),
313 (kernel_ulong_t) &dwc3_pci_intel_properties, },
314
315 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_MRFLD),
316 (kernel_ulong_t) &dwc3_pci_mrfld_properties, },
317
318 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CMLLP),
319 (kernel_ulong_t) &dwc3_pci_intel_properties, },
320
321 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CMLH),
322 (kernel_ulong_t) &dwc3_pci_intel_properties, },
323
324 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SPTLP),
325 (kernel_ulong_t) &dwc3_pci_intel_properties, },
326
327 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SPTH),
328 (kernel_ulong_t) &dwc3_pci_intel_properties, },
329
330 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_BXT),
331 (kernel_ulong_t) &dwc3_pci_intel_properties, },
332
333 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_BXT_M),
334 (kernel_ulong_t) &dwc3_pci_intel_properties, },
335
336 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_APL),
337 (kernel_ulong_t) &dwc3_pci_intel_properties, },
338
339 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_KBP),
340 (kernel_ulong_t) &dwc3_pci_intel_properties, },
341
342 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_GLK),
343 (kernel_ulong_t) &dwc3_pci_intel_properties, },
344
345 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CNPLP),
346 (kernel_ulong_t) &dwc3_pci_intel_properties, },
347
348 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CNPH),
349 (kernel_ulong_t) &dwc3_pci_intel_properties, },
350
351 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CNPV),
352 (kernel_ulong_t) &dwc3_pci_intel_properties, },
353
354 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICLLP),
355 (kernel_ulong_t) &dwc3_pci_intel_properties, },
356
357 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_EHLLP),
358 (kernel_ulong_t) &dwc3_pci_intel_properties, },
359
360 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TGPLP),
361 (kernel_ulong_t) &dwc3_pci_intel_properties, },
362
363 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TGPH),
364 (kernel_ulong_t) &dwc3_pci_intel_properties, },
365
366 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_JSP),
367 (kernel_ulong_t) &dwc3_pci_intel_properties, },
368
369 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_NL_USB),
370 (kernel_ulong_t) &dwc3_pci_amd_properties, },
371 { } /* Terminating Entry */
372};
373MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
374
375#if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP)
376static int dwc3_pci_dsm(struct dwc3_pci *dwc, int param)
377{
378 union acpi_object *obj;
379 union acpi_object tmp;
380 union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp);
381
382 if (!dwc->has_dsm_for_pm)
383 return 0;
384
385 tmp.type = ACPI_TYPE_INTEGER;
386 tmp.integer.value = param;
387
388 obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), &dwc->guid,
389 1, PCI_INTEL_BXT_FUNC_PMU_PWR, &argv4);
390 if (!obj) {
391 dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n");
392 return -EIO;
393 }
394
395 ACPI_FREE(obj);
396
397 return 0;
398}
399#endif /* CONFIG_PM || CONFIG_PM_SLEEP */
400
401#ifdef CONFIG_PM
402static int dwc3_pci_runtime_suspend(struct device *dev)
403{
404 struct dwc3_pci *dwc = dev_get_drvdata(dev);
405
406 if (device_can_wakeup(dev))
407 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
408
409 return -EBUSY;
410}
411
412static int dwc3_pci_runtime_resume(struct device *dev)
413{
414 struct dwc3_pci *dwc = dev_get_drvdata(dev);
415 int ret;
416
417 ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0);
418 if (ret)
419 return ret;
420
421 queue_work(pm_wq, &dwc->wakeup_work);
422
423 return 0;
424}
425#endif /* CONFIG_PM */
426
427#ifdef CONFIG_PM_SLEEP
428static int dwc3_pci_suspend(struct device *dev)
429{
430 struct dwc3_pci *dwc = dev_get_drvdata(dev);
431
432 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3);
433}
434
435static int dwc3_pci_resume(struct device *dev)
436{
437 struct dwc3_pci *dwc = dev_get_drvdata(dev);
438
439 return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0);
440}
441#endif /* CONFIG_PM_SLEEP */
442
443static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
444 SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
445 SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume,
446 NULL)
447};
448
449static struct pci_driver dwc3_pci_driver = {
450 .name = "dwc3-pci",
451 .id_table = dwc3_pci_id_table,
452 .probe = dwc3_pci_probe,
453 .remove = dwc3_pci_remove,
454 .driver = {
455 .pm = &dwc3_pci_dev_pm_ops,
456 }
457};
458
459MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
460MODULE_LICENSE("GPL v2");
461MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
462
463module_pci_driver(dwc3_pci_driver);