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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/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#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
41static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
42static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
43
44static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
45 { "reset-gpios", &reset_gpios, 1 },
46 { "cs-gpios", &cs_gpios, 1 },
47 { },
48};
49
50static int dwc3_pci_quirks(struct pci_dev *pdev)
51{
52 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
53 pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
54 struct dwc3_platform_data pdata;
55
56 memset(&pdata, 0, sizeof(pdata));
57
58 pdata.has_lpm_erratum = true;
59 pdata.lpm_nyet_threshold = 0xf;
60
61 pdata.u2exit_lfps_quirk = true;
62 pdata.u2ss_inp3_quirk = true;
63 pdata.req_p1p2p3_quirk = true;
64 pdata.del_p1p2p3_quirk = true;
65 pdata.del_phy_power_chg_quirk = true;
66 pdata.lfps_filter_quirk = true;
67 pdata.rx_detect_poll_quirk = true;
68
69 pdata.tx_de_emphasis_quirk = true;
70 pdata.tx_de_emphasis = 1;
71
72 /*
73 * FIXME these quirks should be removed when AMD NL
74 * taps out
75 */
76 pdata.disable_scramble_quirk = true;
77 pdata.dis_u3_susphy_quirk = true;
78 pdata.dis_u2_susphy_quirk = true;
79
80 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
81 sizeof(pdata));
82 }
83
84 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
85 pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
86 struct gpio_desc *gpio;
87
88 acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
89 acpi_dwc3_byt_gpios);
90
91 /*
92 * These GPIOs will turn on the USB2 PHY. Note that we have to
93 * put the gpio descriptors again here because the phy driver
94 * might want to grab them, too.
95 */
96 gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
97 if (IS_ERR(gpio))
98 return PTR_ERR(gpio);
99
100 gpiod_set_value_cansleep(gpio, 1);
101 gpiod_put(gpio);
102
103 gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
104 if (IS_ERR(gpio))
105 return PTR_ERR(gpio);
106
107 if (gpio) {
108 gpiod_set_value_cansleep(gpio, 1);
109 gpiod_put(gpio);
110 usleep_range(10000, 11000);
111 }
112 }
113
114 if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
115 (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
116 pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
117 pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
118
119 struct dwc3_platform_data pdata;
120
121 memset(&pdata, 0, sizeof(pdata));
122 pdata.usb3_lpm_capable = true;
123 pdata.has_lpm_erratum = true;
124 pdata.dis_enblslpm_quirk = true;
125
126 return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
127 sizeof(pdata));
128 }
129
130 return 0;
131}
132
133static int dwc3_pci_probe(struct pci_dev *pci,
134 const struct pci_device_id *id)
135{
136 struct resource res[2];
137 struct platform_device *dwc3;
138 int ret;
139 struct device *dev = &pci->dev;
140
141 ret = pcim_enable_device(pci);
142 if (ret) {
143 dev_err(dev, "failed to enable pci device\n");
144 return -ENODEV;
145 }
146
147 pci_set_master(pci);
148
149 dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
150 if (!dwc3) {
151 dev_err(dev, "couldn't allocate dwc3 device\n");
152 return -ENOMEM;
153 }
154
155 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
156
157 res[0].start = pci_resource_start(pci, 0);
158 res[0].end = pci_resource_end(pci, 0);
159 res[0].name = "dwc_usb3";
160 res[0].flags = IORESOURCE_MEM;
161
162 res[1].start = pci->irq;
163 res[1].name = "dwc_usb3";
164 res[1].flags = IORESOURCE_IRQ;
165
166 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
167 if (ret) {
168 dev_err(dev, "couldn't add resources to dwc3 device\n");
169 return ret;
170 }
171
172 pci_set_drvdata(pci, dwc3);
173 ret = dwc3_pci_quirks(pci);
174 if (ret)
175 goto err;
176
177 dwc3->dev.parent = dev;
178 ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
179
180 ret = platform_device_add(dwc3);
181 if (ret) {
182 dev_err(dev, "failed to register dwc3 device\n");
183 goto err;
184 }
185
186 return 0;
187err:
188 platform_device_put(dwc3);
189 return ret;
190}
191
192static void dwc3_pci_remove(struct pci_dev *pci)
193{
194 acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
195 platform_device_unregister(pci_get_drvdata(pci));
196}
197
198static const struct pci_device_id dwc3_pci_id_table[] = {
199 {
200 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
201 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
202 },
203 {
204 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
205 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
206 },
207 {
208 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
209 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
210 },
211 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
212 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
213 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
214 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
215 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
216 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
217 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
218 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
219 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
220 { } /* Terminating Entry */
221};
222MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
223
224static struct pci_driver dwc3_pci_driver = {
225 .name = "dwc3-pci",
226 .id_table = dwc3_pci_id_table,
227 .probe = dwc3_pci_probe,
228 .remove = dwc3_pci_remove,
229};
230
231MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
232MODULE_LICENSE("GPL v2");
233MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
234
235module_pci_driver(dwc3_pci_driver);
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 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The names of the above-listed copyright holders may not be used
19 * to endorse or promote products derived from this software without
20 * specific prior written permission.
21 *
22 * ALTERNATIVELY, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2, as published by the Free
24 * Software Foundation.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <linux/kernel.h>
40#include <linux/module.h>
41#include <linux/slab.h>
42#include <linux/pci.h>
43#include <linux/platform_device.h>
44
45#include "core.h"
46
47/* FIXME define these in <linux/pci_ids.h> */
48#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
49#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
50
51struct dwc3_pci {
52 struct device *dev;
53 struct platform_device *dwc3;
54};
55
56static int __devinit dwc3_pci_probe(struct pci_dev *pci,
57 const struct pci_device_id *id)
58{
59 struct resource res[2];
60 struct platform_device *dwc3;
61 struct dwc3_pci *glue;
62 int ret = -ENOMEM;
63 int devid;
64 struct device *dev = &pci->dev;
65
66 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
67 if (!glue) {
68 dev_err(dev, "not enough memory\n");
69 return -ENOMEM;
70 }
71
72 glue->dev = dev;
73
74 ret = pci_enable_device(pci);
75 if (ret) {
76 dev_err(dev, "failed to enable pci device\n");
77 return -ENODEV;
78 }
79
80 pci_set_power_state(pci, PCI_D0);
81 pci_set_master(pci);
82
83 devid = dwc3_get_device_id();
84 if (devid < 0) {
85 ret = -ENOMEM;
86 goto err1;
87 }
88
89 dwc3 = platform_device_alloc("dwc3", devid);
90 if (!dwc3) {
91 dev_err(dev, "couldn't allocate dwc3 device\n");
92 ret = -ENOMEM;
93 goto err1;
94 }
95
96 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
97
98 res[0].start = pci_resource_start(pci, 0);
99 res[0].end = pci_resource_end(pci, 0);
100 res[0].name = "dwc_usb3";
101 res[0].flags = IORESOURCE_MEM;
102
103 res[1].start = pci->irq;
104 res[1].name = "dwc_usb3";
105 res[1].flags = IORESOURCE_IRQ;
106
107 ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
108 if (ret) {
109 dev_err(dev, "couldn't add resources to dwc3 device\n");
110 goto err2;
111 }
112
113 pci_set_drvdata(pci, glue);
114
115 dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
116
117 dwc3->dev.dma_mask = dev->dma_mask;
118 dwc3->dev.dma_parms = dev->dma_parms;
119 dwc3->dev.parent = dev;
120 glue->dwc3 = dwc3;
121
122 ret = platform_device_add(dwc3);
123 if (ret) {
124 dev_err(dev, "failed to register dwc3 device\n");
125 goto err3;
126 }
127
128 return 0;
129
130err3:
131 pci_set_drvdata(pci, NULL);
132 platform_device_put(dwc3);
133
134err2:
135 dwc3_put_device_id(devid);
136
137err1:
138 pci_disable_device(pci);
139
140 return ret;
141}
142
143static void __devexit dwc3_pci_remove(struct pci_dev *pci)
144{
145 struct dwc3_pci *glue = pci_get_drvdata(pci);
146
147 dwc3_put_device_id(glue->dwc3->id);
148 platform_device_unregister(glue->dwc3);
149 pci_set_drvdata(pci, NULL);
150 pci_disable_device(pci);
151}
152
153static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
154 {
155 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
156 PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
157 },
158 { } /* Terminating Entry */
159};
160MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
161
162static struct pci_driver dwc3_pci_driver = {
163 .name = "dwc3-pci",
164 .id_table = dwc3_pci_id_table,
165 .probe = dwc3_pci_probe,
166 .remove = __devexit_p(dwc3_pci_remove),
167};
168
169MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
170MODULE_LICENSE("Dual BSD/GPL");
171MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
172
173module_pci_driver(dwc3_pci_driver);