^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * pci.c - DesignWare HS OTG Controller PCI driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2004-2013 Synopsys, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * notice, this list of conditions, and the following disclaimer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * without modification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 2. Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * notice, this list of conditions and the following disclaimer in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * documentation and/or other materials provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * 3. The names of the above-listed copyright holders may not be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * to endorse or promote products derived from this software without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * ALTERNATIVELY, this software may be distributed under the terms of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * GNU General Public License ("GPL") as published by the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Foundation; either version 2 of the License, or (at your option) any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Provides the initialization and cleanup entry points for the DWC_otg PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/usb/hcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/usb/ch11.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/usb/usb_phy_generic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static const char dwc2_driver_name[] = "dwc2-pci";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct dwc2_pci_glue {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct platform_device *dwc2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct platform_device *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int dwc2_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct property_entry properties[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return platform_device_add_properties(dwc2, properties);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * dwc2_pci_probe() - Provides the cleanup entry points for the DWC_otg PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @pci: The programming view of DWC_otg PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static void dwc2_pci_remove(struct pci_dev *pci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) platform_device_unregister(glue->dwc2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) usb_phy_generic_unregister(glue->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) pci_set_drvdata(pci, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static int dwc2_pci_probe(struct pci_dev *pci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) const struct pci_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct resource res[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct platform_device *dwc2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct platform_device *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct device *dev = &pci->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct dwc2_pci_glue *glue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret = pcim_enable_device(pci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) dev_err(dev, "failed to enable pci device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) pci_set_master(pci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) phy = usb_phy_generic_register();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (IS_ERR(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) dev_err(dev, "error registering generic PHY (%ld)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) PTR_ERR(phy));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return PTR_ERR(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (!dwc2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) dev_err(dev, "couldn't allocate dwc2 device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) res[0].start = pci_resource_start(pci, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) res[0].end = pci_resource_end(pci, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) res[0].name = "dwc2";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) res[0].flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) res[1].start = pci->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) res[1].name = "dwc2";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) res[1].flags = IORESOURCE_IRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) dev_err(dev, "couldn't add resources to dwc2 device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) dwc2->dev.parent = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ret = dwc2_pci_quirks(pci, dwc2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (!glue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = platform_device_add(dwc2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) dev_err(dev, "failed to register dwc2 device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) glue->phy = phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) glue->dwc2 = dwc2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) pci_set_drvdata(pci, glue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) usb_phy_generic_unregister(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) platform_device_put(dwc2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static const struct pci_device_id dwc2_pci_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) PCI_DEVICE_ID_STMICRO_USB_OTG),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) { /* end: all zeroes */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static struct pci_driver dwc2_pci_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .name = dwc2_driver_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .id_table = dwc2_pci_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .probe = dwc2_pci_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .remove = dwc2_pci_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) module_pci_driver(dwc2_pci_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) MODULE_AUTHOR("Synopsys, Inc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) MODULE_LICENSE("Dual BSD/GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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