Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 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 | |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 57 | #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0 |
| 58 | |
Matthijs Kooijman | 050232a | 2013-04-11 18:43:46 +0200 | [diff] [blame] | 59 | static const char dwc2_driver_name[] = "dwc2"; |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 60 | |
Stephen Warren | 90dbcea | 2013-04-29 19:49:08 +0000 | [diff] [blame] | 61 | static const struct dwc2_core_params dwc2_module_params = { |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 62 | .otg_cap = -1, |
| 63 | .otg_ver = -1, |
| 64 | .dma_enable = -1, |
| 65 | .dma_desc_enable = 0, |
| 66 | .speed = -1, |
| 67 | .enable_dynamic_fifo = -1, |
| 68 | .en_multiple_tx_fifo = -1, |
| 69 | .host_rx_fifo_size = 1024, |
| 70 | .host_nperio_tx_fifo_size = 256, |
| 71 | .host_perio_tx_fifo_size = 1024, |
| 72 | .max_transfer_size = 65535, |
| 73 | .max_packet_count = 511, |
| 74 | .host_channels = -1, |
| 75 | .phy_type = -1, |
Matthijs Kooijman | de4a193 | 2013-08-30 18:45:22 +0200 | [diff] [blame] | 76 | .phy_utmi_width = -1, |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 77 | .phy_ulpi_ddr = -1, |
| 78 | .phy_ulpi_ext_vbus = -1, |
| 79 | .i2c_enable = -1, |
| 80 | .ulpi_fs_ls = -1, |
| 81 | .host_support_fs_ls_low_power = -1, |
| 82 | .host_ls_low_power_phy_clk = -1, |
| 83 | .ts_dline = -1, |
| 84 | .reload_ctl = -1, |
Paul Zimmerman | 4d3190e | 2013-07-16 12:22:12 -0700 | [diff] [blame] | 85 | .ahbcfg = -1, |
Dom Cobley | 20f2eb9 | 2013-09-23 14:23:34 -0700 | [diff] [blame] | 86 | .uframe_sched = -1, |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 87 | }; |
| 88 | |
| 89 | /** |
| 90 | * dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the |
| 91 | * DWC_otg driver |
| 92 | * |
| 93 | * @dev: Bus device |
| 94 | * |
| 95 | * This routine is called, for example, when the rmmod command is executed. The |
| 96 | * device may or may not be electrically present. If it is present, the driver |
| 97 | * stops device processing. Any resources used on behalf of this device are |
| 98 | * freed. |
| 99 | */ |
| 100 | static void dwc2_driver_remove(struct pci_dev *dev) |
| 101 | { |
| 102 | struct dwc2_hsotg *hsotg = pci_get_drvdata(dev); |
| 103 | |
Paul Zimmerman | e62662c | 2013-03-25 17:03:35 -0700 | [diff] [blame] | 104 | dwc2_hcd_remove(hsotg); |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 105 | pci_disable_device(dev); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg |
| 110 | * driver |
| 111 | * |
| 112 | * @dev: Bus device |
| 113 | * |
| 114 | * This routine creates the driver components required to control the device |
| 115 | * (core, HCD, and PCD) and initializes the device. The driver components are |
| 116 | * stored in a dwc2_hsotg structure. A reference to the dwc2_hsotg is saved |
| 117 | * in the device private data. This allows the driver to access the dwc2_hsotg |
| 118 | * structure on subsequent calls to driver methods for this device. |
| 119 | */ |
| 120 | static int dwc2_driver_probe(struct pci_dev *dev, |
| 121 | const struct pci_device_id *id) |
| 122 | { |
| 123 | struct dwc2_hsotg *hsotg; |
| 124 | int retval; |
| 125 | |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 126 | hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL); |
| 127 | if (!hsotg) |
| 128 | return -ENOMEM; |
| 129 | |
Paul Zimmerman | e62662c | 2013-03-25 17:03:35 -0700 | [diff] [blame] | 130 | hsotg->dev = &dev->dev; |
Laurent Navet | 1b6cb29 | 2013-05-02 13:23:17 +0200 | [diff] [blame] | 131 | hsotg->regs = devm_ioremap_resource(&dev->dev, &dev->resource[0]); |
| 132 | if (IS_ERR(hsotg->regs)) |
| 133 | return PTR_ERR(hsotg->regs); |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 134 | |
| 135 | dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n", |
| 136 | (unsigned long)pci_resource_start(dev, 0), hsotg->regs); |
| 137 | |
| 138 | if (pci_enable_device(dev) < 0) |
| 139 | return -ENODEV; |
| 140 | |
| 141 | pci_set_master(dev); |
| 142 | |
Dinh Nguyen | db8178c | 2014-11-11 11:13:37 -0600 | [diff] [blame] | 143 | retval = devm_request_irq(hsotg->dev, dev->irq, |
| 144 | dwc2_handle_common_intr, IRQF_SHARED, |
| 145 | dev_name(hsotg->dev), hsotg); |
| 146 | if (retval) |
| 147 | return retval; |
| 148 | |
Dinh Nguyen | 117777b | 2014-11-11 11:13:34 -0600 | [diff] [blame] | 149 | spin_lock_init(&hsotg->lock); |
Paul Zimmerman | e62662c | 2013-03-25 17:03:35 -0700 | [diff] [blame] | 150 | retval = dwc2_hcd_init(hsotg, dev->irq, &dwc2_module_params); |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 151 | if (retval) { |
| 152 | pci_disable_device(dev); |
| 153 | return retval; |
| 154 | } |
| 155 | |
| 156 | pci_set_drvdata(dev, hsotg); |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 157 | |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 158 | return retval; |
| 159 | } |
| 160 | |
Jingoo Han | 41e043f | 2013-12-03 08:26:00 +0900 | [diff] [blame] | 161 | static const struct pci_device_id dwc2_pci_ids[] = { |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 162 | { |
| 163 | PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG), |
| 164 | }, |
Federico Vaga | 25f73e6 | 2013-05-13 19:54:12 +0200 | [diff] [blame] | 165 | { |
| 166 | PCI_DEVICE(PCI_VENDOR_ID_STMICRO, |
| 167 | PCI_DEVICE_ID_STMICRO_USB_OTG), |
| 168 | }, |
Paul Zimmerman | 99882e3 | 2013-03-11 17:48:01 -0700 | [diff] [blame] | 169 | { /* end: all zeroes */ } |
| 170 | }; |
| 171 | MODULE_DEVICE_TABLE(pci, dwc2_pci_ids); |
| 172 | |
| 173 | static struct pci_driver dwc2_pci_driver = { |
| 174 | .name = dwc2_driver_name, |
| 175 | .id_table = dwc2_pci_ids, |
| 176 | .probe = dwc2_driver_probe, |
| 177 | .remove = dwc2_driver_remove, |
| 178 | }; |
| 179 | |
| 180 | module_pci_driver(dwc2_pci_driver); |
| 181 | |
| 182 | MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue"); |
| 183 | MODULE_AUTHOR("Synopsys, Inc."); |
| 184 | MODULE_LICENSE("Dual BSD/GPL"); |