spi: mediatek: single device does not require cs_gpios
[firefly-linux-kernel-4.4.55.git] / drivers / usb / dwc3 / dwc3-pci.c
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/platform_device.h>
24 #include <linux/gpio/consumer.h>
25 #include <linux/acpi.h>
26
27 #include "platform_data.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
38 static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
39 static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
40
41 static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
42         { "reset-gpios", &reset_gpios, 1 },
43         { "cs-gpios", &cs_gpios, 1 },
44         { },
45 };
46
47 static int dwc3_pci_quirks(struct pci_dev *pdev)
48 {
49         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
50             pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
51                 struct dwc3_platform_data pdata;
52
53                 memset(&pdata, 0, sizeof(pdata));
54
55                 pdata.has_lpm_erratum = true;
56                 pdata.lpm_nyet_threshold = 0xf;
57
58                 pdata.u2exit_lfps_quirk = true;
59                 pdata.u2ss_inp3_quirk = true;
60                 pdata.req_p1p2p3_quirk = true;
61                 pdata.del_p1p2p3_quirk = true;
62                 pdata.del_phy_power_chg_quirk = true;
63                 pdata.lfps_filter_quirk = true;
64                 pdata.rx_detect_poll_quirk = true;
65
66                 pdata.tx_de_emphasis_quirk = true;
67                 pdata.tx_de_emphasis = 1;
68
69                 /*
70                  * FIXME these quirks should be removed when AMD NL
71                  * taps out
72                  */
73                 pdata.disable_scramble_quirk = true;
74                 pdata.dis_u3_susphy_quirk = true;
75                 pdata.dis_u2_susphy_quirk = true;
76
77                 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
78                                                 sizeof(pdata));
79         }
80
81         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
82             pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
83                 struct gpio_desc *gpio;
84
85                 acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
86                                           acpi_dwc3_byt_gpios);
87
88                 /*
89                  * These GPIOs will turn on the USB2 PHY. Note that we have to
90                  * put the gpio descriptors again here because the phy driver
91                  * might want to grab them, too.
92                  */
93                 gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
94                 if (IS_ERR(gpio))
95                         return PTR_ERR(gpio);
96
97                 gpiod_set_value_cansleep(gpio, 1);
98                 gpiod_put(gpio);
99
100                 gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
101                 if (IS_ERR(gpio))
102                         return PTR_ERR(gpio);
103
104                 if (gpio) {
105                         gpiod_set_value_cansleep(gpio, 1);
106                         gpiod_put(gpio);
107                         usleep_range(10000, 11000);
108                 }
109         }
110
111         if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
112             (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
113              pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
114              pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
115
116                 struct dwc3_platform_data pdata;
117
118                 memset(&pdata, 0, sizeof(pdata));
119                 pdata.usb3_lpm_capable = true;
120                 pdata.has_lpm_erratum = true;
121                 pdata.dis_enblslpm_quirk = true;
122
123                 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
124                                                 sizeof(pdata));
125         }
126
127         return 0;
128 }
129
130 static int dwc3_pci_probe(struct pci_dev *pci,
131                 const struct pci_device_id *id)
132 {
133         struct resource         res[2];
134         struct platform_device  *dwc3;
135         int                     ret;
136         struct device           *dev = &pci->dev;
137
138         ret = pcim_enable_device(pci);
139         if (ret) {
140                 dev_err(dev, "failed to enable pci device\n");
141                 return -ENODEV;
142         }
143
144         pci_set_master(pci);
145
146         dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
147         if (!dwc3) {
148                 dev_err(dev, "couldn't allocate dwc3 device\n");
149                 return -ENOMEM;
150         }
151
152         memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
153
154         res[0].start    = pci_resource_start(pci, 0);
155         res[0].end      = pci_resource_end(pci, 0);
156         res[0].name     = "dwc_usb3";
157         res[0].flags    = IORESOURCE_MEM;
158
159         res[1].start    = pci->irq;
160         res[1].name     = "dwc_usb3";
161         res[1].flags    = IORESOURCE_IRQ;
162
163         ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
164         if (ret) {
165                 dev_err(dev, "couldn't add resources to dwc3 device\n");
166                 return ret;
167         }
168
169         pci_set_drvdata(pci, dwc3);
170         ret = dwc3_pci_quirks(pci);
171         if (ret)
172                 goto err;
173
174         dwc3->dev.parent = dev;
175         ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
176
177         ret = platform_device_add(dwc3);
178         if (ret) {
179                 dev_err(dev, "failed to register dwc3 device\n");
180                 goto err;
181         }
182
183         return 0;
184 err:
185         platform_device_put(dwc3);
186         return ret;
187 }
188
189 static void dwc3_pci_remove(struct pci_dev *pci)
190 {
191         acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
192         platform_device_unregister(pci_get_drvdata(pci));
193 }
194
195 static const struct pci_device_id dwc3_pci_id_table[] = {
196         {
197                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
198                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
199         },
200         {
201                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
202                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
203         },
204         {
205                 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
206                                 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
207         },
208         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
209         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
210         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
211         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
212         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
213         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
214         {  }    /* Terminating Entry */
215 };
216 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
217
218 static struct pci_driver dwc3_pci_driver = {
219         .name           = "dwc3-pci",
220         .id_table       = dwc3_pci_id_table,
221         .probe          = dwc3_pci_probe,
222         .remove         = dwc3_pci_remove,
223 };
224
225 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
226 MODULE_LICENSE("GPL v2");
227 MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
228
229 module_pci_driver(dwc3_pci_driver);