Loading...
1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/*
3 * pci.c - DesignWare HS OTG Controller PCI driver
4 *
5 * Copyright (C) 2004-2013 Synopsys, Inc.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The names of the above-listed copyright holders may not be used
17 * to endorse or promote products derived from this software without
18 * specific prior written permission.
19 *
20 * ALTERNATIVELY, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") as published by the Free Software
22 * Foundation; either version 2 of the License, or (at your option) any
23 * later version.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
26 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
27 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
29 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * Provides the initialization and cleanup entry points for the DWC_otg PCI
40 * driver
41 */
42#include <linux/kernel.h>
43#include <linux/module.h>
44#include <linux/moduleparam.h>
45#include <linux/spinlock.h>
46#include <linux/interrupt.h>
47#include <linux/io.h>
48#include <linux/slab.h>
49#include <linux/pci.h>
50#include <linux/usb.h>
51
52#include <linux/usb/hcd.h>
53#include <linux/usb/ch11.h>
54#include <linux/platform_device.h>
55#include <linux/usb/usb_phy_generic.h>
56
57#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
58
59static const char dwc2_driver_name[] = "dwc2-pci";
60
61struct dwc2_pci_glue {
62 struct platform_device *dwc2;
63 struct platform_device *phy;
64};
65
66static int dwc2_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc2)
67{
68 if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
69 pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) {
70 struct property_entry properties[] = {
71 { },
72 };
73
74 return platform_device_add_properties(dwc2, properties);
75 }
76
77 return 0;
78}
79
80/**
81 * dwc2_pci_probe() - Provides the cleanup entry points for the DWC_otg PCI
82 * driver
83 *
84 * @pci: The programming view of DWC_otg PCI
85 */
86static void dwc2_pci_remove(struct pci_dev *pci)
87{
88 struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
89
90 platform_device_unregister(glue->dwc2);
91 usb_phy_generic_unregister(glue->phy);
92 pci_set_drvdata(pci, NULL);
93}
94
95static int dwc2_pci_probe(struct pci_dev *pci,
96 const struct pci_device_id *id)
97{
98 struct resource res[2];
99 struct platform_device *dwc2;
100 struct platform_device *phy;
101 int ret;
102 struct device *dev = &pci->dev;
103 struct dwc2_pci_glue *glue;
104
105 ret = pcim_enable_device(pci);
106 if (ret) {
107 dev_err(dev, "failed to enable pci device\n");
108 return -ENODEV;
109 }
110
111 pci_set_master(pci);
112
113 phy = usb_phy_generic_register();
114 if (IS_ERR(phy)) {
115 dev_err(dev, "error registering generic PHY (%ld)\n",
116 PTR_ERR(phy));
117 return PTR_ERR(phy);
118 }
119
120 dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
121 if (!dwc2) {
122 dev_err(dev, "couldn't allocate dwc2 device\n");
123 ret = -ENOMEM;
124 goto err;
125 }
126
127 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
128
129 res[0].start = pci_resource_start(pci, 0);
130 res[0].end = pci_resource_end(pci, 0);
131 res[0].name = "dwc2";
132 res[0].flags = IORESOURCE_MEM;
133
134 res[1].start = pci->irq;
135 res[1].name = "dwc2";
136 res[1].flags = IORESOURCE_IRQ;
137
138 ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
139 if (ret) {
140 dev_err(dev, "couldn't add resources to dwc2 device\n");
141 goto err;
142 }
143
144 dwc2->dev.parent = dev;
145
146 ret = dwc2_pci_quirks(pci, dwc2);
147 if (ret)
148 goto err;
149
150 glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
151 if (!glue) {
152 ret = -ENOMEM;
153 goto err;
154 }
155
156 ret = platform_device_add(dwc2);
157 if (ret) {
158 dev_err(dev, "failed to register dwc2 device\n");
159 goto err;
160 }
161
162 glue->phy = phy;
163 glue->dwc2 = dwc2;
164 pci_set_drvdata(pci, glue);
165
166 return 0;
167err:
168 usb_phy_generic_unregister(phy);
169 platform_device_put(dwc2);
170 return ret;
171}
172
173static const struct pci_device_id dwc2_pci_ids[] = {
174 {
175 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
176 },
177 {
178 PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
179 PCI_DEVICE_ID_STMICRO_USB_OTG),
180 },
181 { /* end: all zeroes */ }
182};
183MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
184
185static struct pci_driver dwc2_pci_driver = {
186 .name = dwc2_driver_name,
187 .id_table = dwc2_pci_ids,
188 .probe = dwc2_pci_probe,
189 .remove = dwc2_pci_remove,
190};
191
192module_pci_driver(dwc2_pci_driver);
193
194MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
195MODULE_AUTHOR("Synopsys, Inc.");
196MODULE_LICENSE("Dual BSD/GPL");
1/*
2 * pci.c - DesignWare HS OTG Controller PCI driver
3 *
4 * Copyright (C) 2004-2013 Synopsys, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer,
11 * without modification.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The names of the above-listed copyright holders may not be used
16 * to endorse or promote products derived from this software without
17 * specific prior written permission.
18 *
19 * ALTERNATIVELY, this software may be distributed under the terms of the
20 * GNU General Public License ("GPL") as published by the Free Software
21 * Foundation; either version 2 of the License, or (at your option) any
22 * later version.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
28 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37/*
38 * Provides the initialization and cleanup entry points for the DWC_otg PCI
39 * driver
40 */
41#include <linux/kernel.h>
42#include <linux/module.h>
43#include <linux/moduleparam.h>
44#include <linux/spinlock.h>
45#include <linux/interrupt.h>
46#include <linux/io.h>
47#include <linux/slab.h>
48#include <linux/pci.h>
49#include <linux/usb.h>
50
51#include <linux/usb/hcd.h>
52#include <linux/usb/ch11.h>
53
54#include "core.h"
55#include "hcd.h"
56
57#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
58#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
59
60static const char dwc2_driver_name[] = "dwc2";
61
62static const struct dwc2_core_params dwc2_module_params = {
63 .otg_cap = -1,
64 .otg_ver = -1,
65 .dma_enable = -1,
66 .dma_desc_enable = 0,
67 .speed = -1,
68 .enable_dynamic_fifo = -1,
69 .en_multiple_tx_fifo = -1,
70 .host_rx_fifo_size = 1024,
71 .host_nperio_tx_fifo_size = 256,
72 .host_perio_tx_fifo_size = 1024,
73 .max_transfer_size = 65535,
74 .max_packet_count = 511,
75 .host_channels = -1,
76 .phy_type = -1,
77 .phy_utmi_width = -1,
78 .phy_ulpi_ddr = -1,
79 .phy_ulpi_ext_vbus = -1,
80 .i2c_enable = -1,
81 .ulpi_fs_ls = -1,
82 .host_support_fs_ls_low_power = -1,
83 .host_ls_low_power_phy_clk = -1,
84 .ts_dline = -1,
85 .reload_ctl = -1,
86 .ahbcfg = -1,
87 .uframe_sched = -1,
88};
89
90/**
91 * dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the
92 * DWC_otg driver
93 *
94 * @dev: Bus device
95 *
96 * This routine is called, for example, when the rmmod command is executed. The
97 * device may or may not be electrically present. If it is present, the driver
98 * stops device processing. Any resources used on behalf of this device are
99 * freed.
100 */
101static void dwc2_driver_remove(struct pci_dev *dev)
102{
103 struct dwc2_hsotg *hsotg = pci_get_drvdata(dev);
104
105 dwc2_hcd_remove(hsotg);
106 pci_disable_device(dev);
107}
108
109/**
110 * dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg
111 * driver
112 *
113 * @dev: Bus device
114 *
115 * This routine creates the driver components required to control the device
116 * (core, HCD, and PCD) and initializes the device. The driver components are
117 * stored in a dwc2_hsotg structure. A reference to the dwc2_hsotg is saved
118 * in the device private data. This allows the driver to access the dwc2_hsotg
119 * structure on subsequent calls to driver methods for this device.
120 */
121static int dwc2_driver_probe(struct pci_dev *dev,
122 const struct pci_device_id *id)
123{
124 struct dwc2_hsotg *hsotg;
125 int retval;
126
127 hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
128 if (!hsotg)
129 return -ENOMEM;
130
131 hsotg->dev = &dev->dev;
132 hsotg->regs = devm_ioremap_resource(&dev->dev, &dev->resource[0]);
133 if (IS_ERR(hsotg->regs))
134 return PTR_ERR(hsotg->regs);
135
136 dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
137 (unsigned long)pci_resource_start(dev, 0), hsotg->regs);
138
139 if (pci_enable_device(dev) < 0)
140 return -ENODEV;
141
142 pci_set_master(dev);
143
144 retval = dwc2_hcd_init(hsotg, dev->irq, &dwc2_module_params);
145 if (retval) {
146 pci_disable_device(dev);
147 return retval;
148 }
149
150 pci_set_drvdata(dev, hsotg);
151
152 return retval;
153}
154
155static const struct pci_device_id dwc2_pci_ids[] = {
156 {
157 PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
158 },
159 {
160 PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
161 PCI_DEVICE_ID_STMICRO_USB_OTG),
162 },
163 { /* end: all zeroes */ }
164};
165MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
166
167static struct pci_driver dwc2_pci_driver = {
168 .name = dwc2_driver_name,
169 .id_table = dwc2_pci_ids,
170 .probe = dwc2_driver_probe,
171 .remove = dwc2_driver_remove,
172};
173
174module_pci_driver(dwc2_pci_driver);
175
176MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
177MODULE_AUTHOR("Synopsys, Inc.");
178MODULE_LICENSE("Dual BSD/GPL");