Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 1 | /* |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 2 | * ci_hdrc_pci.c - MIPS USB IP core family device controller |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. |
| 5 | * |
| 6 | * Author: David Lopo |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 13 | #include <linux/platform_device.h> |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 14 | #include <linux/module.h> |
| 15 | #include <linux/pci.h> |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/usb/gadget.h> |
Alexander Shishkin | e443b33 | 2012-05-11 17:25:46 +0300 | [diff] [blame] | 18 | #include <linux/usb/chipidea.h> |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 19 | #include <linux/usb/usb_phy_generic.h> |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 20 | |
| 21 | /* driver name */ |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 22 | #define UDC_DRIVER_NAME "ci_hdrc_pci" |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 23 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 24 | struct ci_hdrc_pci { |
| 25 | struct platform_device *ci; |
| 26 | struct platform_device *phy; |
| 27 | }; |
| 28 | |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 29 | /****************************************************************************** |
| 30 | * PCI block |
| 31 | *****************************************************************************/ |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 32 | static struct ci_hdrc_platform_data pci_platdata = { |
Pavankumar Kondeti | f01ef57 | 2010-12-07 17:54:02 +0530 | [diff] [blame] | 33 | .name = UDC_DRIVER_NAME, |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 34 | .capoffset = DEF_CAPOFFSET, |
| 35 | }; |
| 36 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 37 | static struct ci_hdrc_platform_data langwell_pci_platdata = { |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 38 | .name = UDC_DRIVER_NAME, |
| 39 | .capoffset = 0, |
Pavankumar Kondeti | f01ef57 | 2010-12-07 17:54:02 +0530 | [diff] [blame] | 40 | }; |
| 41 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 42 | static struct ci_hdrc_platform_data penwell_pci_platdata = { |
Alexander Shishkin | bd84198 | 2012-05-11 17:25:55 +0300 | [diff] [blame] | 43 | .name = UDC_DRIVER_NAME, |
| 44 | .capoffset = 0, |
| 45 | .power_budget = 200, |
| 46 | }; |
| 47 | |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 48 | /** |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 49 | * ci_hdrc_pci_probe: PCI probe |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 50 | * @pdev: USB device controller being probed |
| 51 | * @id: PCI hotplug ID connecting controller to UDC framework |
| 52 | * |
| 53 | * This function returns an error code |
| 54 | * Allocates basic PCI resources for this USB device controller, and then |
| 55 | * invokes the udc_probe() method to start the UDC associated with it |
| 56 | */ |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 57 | static int ci_hdrc_pci_probe(struct pci_dev *pdev, |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 58 | const struct pci_device_id *id) |
| 59 | { |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 60 | struct ci_hdrc_platform_data *platdata = (void *)id->driver_data; |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 61 | struct ci_hdrc_pci *ci; |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 62 | struct resource res[3]; |
| 63 | int retval = 0, nres = 2; |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 64 | |
Richard Zhao | 77c4400 | 2012-06-29 17:48:53 +0800 | [diff] [blame] | 65 | if (!platdata) { |
Alexander Shishkin | 1989b5c | 2012-05-11 17:25:40 +0300 | [diff] [blame] | 66 | dev_err(&pdev->dev, "device doesn't provide driver data\n"); |
| 67 | return -ENODEV; |
| 68 | } |
| 69 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 70 | ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL); |
| 71 | if (!ci) |
| 72 | return -ENOMEM; |
| 73 | |
Andy Shevchenko | 8b2379b | 2013-06-13 18:00:02 +0300 | [diff] [blame] | 74 | retval = pcim_enable_device(pdev); |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 75 | if (retval) |
Andy Shevchenko | 8b2379b | 2013-06-13 18:00:02 +0300 | [diff] [blame] | 76 | return retval; |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 77 | |
| 78 | if (!pdev->irq) { |
| 79 | dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); |
Andy Shevchenko | 8b2379b | 2013-06-13 18:00:02 +0300 | [diff] [blame] | 80 | return -ENODEV; |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 81 | } |
| 82 | |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 83 | pci_set_master(pdev); |
| 84 | pci_try_set_mwi(pdev); |
| 85 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 86 | /* register a nop PHY */ |
| 87 | ci->phy = usb_phy_generic_register(); |
| 88 | if (!ci->phy) |
| 89 | return -ENOMEM; |
| 90 | |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 91 | memset(res, 0, sizeof(res)); |
| 92 | res[0].start = pci_resource_start(pdev, 0); |
| 93 | res[0].end = pci_resource_end(pdev, 0); |
| 94 | res[0].flags = IORESOURCE_MEM; |
| 95 | res[1].start = pdev->irq; |
| 96 | res[1].flags = IORESOURCE_IRQ; |
| 97 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 98 | ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata); |
| 99 | if (IS_ERR(ci->ci)) { |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 100 | dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 101 | usb_phy_generic_unregister(ci->phy); |
| 102 | return PTR_ERR(ci->ci); |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 103 | } |
| 104 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 105 | pci_set_drvdata(pdev, ci); |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 106 | |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 107 | return 0; |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | /** |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 111 | * ci_hdrc_pci_remove: PCI remove |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 112 | * @pdev: USB Device Controller being removed |
| 113 | * |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 114 | * Reverses the effect of ci_hdrc_pci_probe(), |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 115 | * first invoking the udc_remove() and then releases |
| 116 | * all PCI resources allocated for this USB device controller |
| 117 | */ |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 118 | static void ci_hdrc_pci_remove(struct pci_dev *pdev) |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 119 | { |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 120 | struct ci_hdrc_pci *ci = pci_get_drvdata(pdev); |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 121 | |
Andy Shevchenko | ba1aff6 | 2015-02-11 12:45:00 +0800 | [diff] [blame] | 122 | ci_hdrc_remove_device(ci->ci); |
| 123 | usb_phy_generic_unregister(ci->phy); |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | /** |
| 127 | * PCI device table |
| 128 | * PCI device structure |
| 129 | * |
| 130 | * Check "pci.h" for details |
Andy Shevchenko | 518ca8d | 2015-02-03 18:08:39 +0200 | [diff] [blame] | 131 | * |
| 132 | * Note: ehci-pci driver may try to probe the device first. You have to add an |
| 133 | * ID to the bypass_pci_id_table in ehci-pci driver to prevent this. |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 134 | */ |
Jingoo Han | 4e065b8 | 2013-11-28 14:15:26 +0900 | [diff] [blame] | 135 | static const struct pci_device_id ci_hdrc_pci_id_table[] = { |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 136 | { |
| 137 | PCI_DEVICE(0x153F, 0x1004), |
Richard Zhao | 77c4400 | 2012-06-29 17:48:53 +0800 | [diff] [blame] | 138 | .driver_data = (kernel_ulong_t)&pci_platdata, |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 139 | }, |
| 140 | { |
| 141 | PCI_DEVICE(0x153F, 0x1006), |
Richard Zhao | 77c4400 | 2012-06-29 17:48:53 +0800 | [diff] [blame] | 142 | .driver_data = (kernel_ulong_t)&pci_platdata, |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 143 | }, |
| 144 | { |
Sergei Shtylyov | 46b95a1d | 2015-10-04 23:55:35 +0300 | [diff] [blame] | 145 | PCI_VDEVICE(INTEL, 0x0811), |
Richard Zhao | 77c4400 | 2012-06-29 17:48:53 +0800 | [diff] [blame] | 146 | .driver_data = (kernel_ulong_t)&langwell_pci_platdata, |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 147 | }, |
| 148 | { |
Sergei Shtylyov | 46b95a1d | 2015-10-04 23:55:35 +0300 | [diff] [blame] | 149 | PCI_VDEVICE(INTEL, 0x0829), |
Richard Zhao | 77c4400 | 2012-06-29 17:48:53 +0800 | [diff] [blame] | 150 | .driver_data = (kernel_ulong_t)&penwell_pci_platdata, |
Alexander Shishkin | 62bb84e | 2012-05-08 23:29:01 +0300 | [diff] [blame] | 151 | }, |
David Cohen | a214339 | 2013-10-01 14:32:58 -0700 | [diff] [blame] | 152 | { |
| 153 | /* Intel Clovertrail */ |
Sergei Shtylyov | 46b95a1d | 2015-10-04 23:55:35 +0300 | [diff] [blame] | 154 | PCI_VDEVICE(INTEL, 0xe006), |
David Cohen | a214339 | 2013-10-01 14:32:58 -0700 | [diff] [blame] | 155 | .driver_data = (kernel_ulong_t)&penwell_pci_platdata, |
| 156 | }, |
| 157 | { 0 } /* end: all zeroes */ |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 158 | }; |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 159 | MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table); |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 160 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 161 | static struct pci_driver ci_hdrc_pci_driver = { |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 162 | .name = UDC_DRIVER_NAME, |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 163 | .id_table = ci_hdrc_pci_id_table, |
| 164 | .probe = ci_hdrc_pci_probe, |
| 165 | .remove = ci_hdrc_pci_remove, |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 166 | }; |
| 167 | |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 168 | module_pci_driver(ci_hdrc_pci_driver); |
Pavankumar Kondeti | 409a15d | 2010-12-07 17:53:59 +0530 | [diff] [blame] | 169 | |
| 170 | MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); |
| 171 | MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); |
| 172 | MODULE_LICENSE("GPL"); |
| 173 | MODULE_VERSION("June 2008"); |
Alexander Shishkin | 8e22978 | 2013-06-24 14:46:36 +0300 | [diff] [blame] | 174 | MODULE_ALIAS("platform:ci13xxx_pci"); |