Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * EHCI HCD (Host Controller Driver) for USB. |
| 3 | * |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 4 | * Bus Glue for AMD Alchemy Au1xxx |
| 5 | * |
| 6 | * Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org> |
| 7 | * |
| 8 | * Modified for AMD Alchemy Au1200 EHC |
| 9 | * by K.Boge <karsten.boge@amd.com> |
| 10 | * |
| 11 | * This file is licenced under the GPL. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <asm/mach-au1x00/au1000.h> |
| 16 | |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 17 | |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 18 | extern int usb_disabled(void); |
| 19 | |
Manuel Lauss | 9757de3 | 2010-03-08 20:43:32 +0100 | [diff] [blame] | 20 | static int au1xxx_ehci_setup(struct usb_hcd *hcd) |
| 21 | { |
| 22 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Alan Stern | 1a49e2a | 2012-07-09 15:55:14 -0400 | [diff] [blame] | 23 | int ret; |
| 24 | |
| 25 | ehci->caps = hcd->regs; |
| 26 | ret = ehci_setup(hcd); |
Manuel Lauss | 9757de3 | 2010-03-08 20:43:32 +0100 | [diff] [blame] | 27 | |
| 28 | ehci->need_io_watchdog = 0; |
| 29 | return ret; |
| 30 | } |
| 31 | |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 32 | static const struct hc_driver ehci_au1xxx_hc_driver = { |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 33 | .description = hcd_name, |
| 34 | .product_desc = "Au1xxx EHCI", |
| 35 | .hcd_priv_size = sizeof(struct ehci_hcd), |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 36 | |
| 37 | /* |
| 38 | * generic hardware linkage |
| 39 | */ |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 40 | .irq = ehci_irq, |
| 41 | .flags = HCD_MEMORY | HCD_USB2, |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 42 | |
| 43 | /* |
| 44 | * basic lifecycle operations |
Mike Nuss | c907d3b | 2007-08-20 18:21:15 -0700 | [diff] [blame] | 45 | * |
| 46 | * FIXME -- ehci_init() doesn't do enough here. |
| 47 | * See ehci-ppc-soc for a complete implementation. |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 48 | */ |
Manuel Lauss | 9757de3 | 2010-03-08 20:43:32 +0100 | [diff] [blame] | 49 | .reset = au1xxx_ehci_setup, |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 50 | .start = ehci_run, |
| 51 | .stop = ehci_stop, |
| 52 | .shutdown = ehci_shutdown, |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 53 | |
| 54 | /* |
| 55 | * managing i/o requests and associated device resources |
| 56 | */ |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 57 | .urb_enqueue = ehci_urb_enqueue, |
| 58 | .urb_dequeue = ehci_urb_dequeue, |
| 59 | .endpoint_disable = ehci_endpoint_disable, |
Alan Stern | b18ffd4 | 2009-05-27 18:21:56 -0400 | [diff] [blame] | 60 | .endpoint_reset = ehci_endpoint_reset, |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 61 | |
| 62 | /* |
| 63 | * scheduling support |
| 64 | */ |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 65 | .get_frame_number = ehci_get_frame, |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 66 | |
| 67 | /* |
| 68 | * root hub support |
| 69 | */ |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 70 | .hub_status_data = ehci_hub_status_data, |
| 71 | .hub_control = ehci_hub_control, |
| 72 | .bus_suspend = ehci_bus_suspend, |
| 73 | .bus_resume = ehci_bus_resume, |
| 74 | .relinquish_port = ehci_relinquish_port, |
| 75 | .port_handed_over = ehci_port_handed_over, |
Alan Stern | 914b701 | 2009-06-29 10:47:30 -0400 | [diff] [blame] | 76 | |
| 77 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 78 | }; |
| 79 | |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 80 | static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 81 | { |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 82 | struct usb_hcd *hcd; |
H Hartley Sweeten | 1f141ca | 2009-12-14 18:22:42 -0500 | [diff] [blame] | 83 | struct resource *res; |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 84 | int ret; |
| 85 | |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 86 | if (usb_disabled()) |
| 87 | return -ENODEV; |
| 88 | |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 89 | if (pdev->resource[1].flags != IORESOURCE_IRQ) { |
| 90 | pr_debug("resource[1] is not IORESOURCE_IRQ"); |
| 91 | return -ENOMEM; |
| 92 | } |
| 93 | hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx"); |
| 94 | if (!hcd) |
| 95 | return -ENOMEM; |
| 96 | |
H Hartley Sweeten | 1f141ca | 2009-12-14 18:22:42 -0500 | [diff] [blame] | 97 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 98 | hcd->rsrc_start = res->start; |
| 99 | hcd->rsrc_len = resource_size(res); |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 100 | |
| 101 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 102 | pr_debug("request_mem_region failed"); |
| 103 | ret = -EBUSY; |
| 104 | goto err1; |
| 105 | } |
| 106 | |
| 107 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 108 | if (!hcd->regs) { |
| 109 | pr_debug("ioremap failed"); |
| 110 | ret = -ENOMEM; |
| 111 | goto err2; |
| 112 | } |
| 113 | |
Manuel Lauss | ce6bc92 | 2011-08-12 20:12:33 +0200 | [diff] [blame] | 114 | if (alchemy_usb_control(ALCHEMY_USB_EHCI0, 1)) { |
| 115 | printk(KERN_INFO "%s: controller init failed!\n", pdev->name); |
| 116 | ret = -ENODEV; |
| 117 | goto err3; |
| 118 | } |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 119 | |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 120 | ret = usb_add_hcd(hcd, pdev->resource[1].start, |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 121 | IRQF_SHARED); |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 122 | if (ret == 0) { |
| 123 | platform_set_drvdata(pdev, hcd); |
| 124 | return ret; |
| 125 | } |
| 126 | |
Manuel Lauss | ce6bc92 | 2011-08-12 20:12:33 +0200 | [diff] [blame] | 127 | alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); |
| 128 | err3: |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 129 | iounmap(hcd->regs); |
| 130 | err2: |
| 131 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 132 | err1: |
| 133 | usb_put_hcd(hcd); |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 134 | return ret; |
| 135 | } |
| 136 | |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 137 | static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 138 | { |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 139 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 140 | |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 141 | usb_remove_hcd(hcd); |
Manuel Lauss | ce6bc92 | 2011-08-12 20:12:33 +0200 | [diff] [blame] | 142 | alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 143 | iounmap(hcd->regs); |
| 144 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 145 | usb_put_hcd(hcd); |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 146 | platform_set_drvdata(pdev, NULL); |
| 147 | |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 148 | return 0; |
| 149 | } |
| 150 | |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 151 | #ifdef CONFIG_PM |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 152 | static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 153 | { |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 154 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 155 | bool do_wakeup = device_may_wakeup(dev); |
| 156 | int rc; |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 157 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 158 | rc = ehci_suspend(hcd, do_wakeup); |
Manuel Lauss | ce6bc92 | 2011-08-12 20:12:33 +0200 | [diff] [blame] | 159 | alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); |
Manuel Lauss | a7535ac | 2011-05-05 16:35:24 +0200 | [diff] [blame] | 160 | |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 161 | return rc; |
| 162 | } |
| 163 | |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 164 | static int ehci_hcd_au1xxx_drv_resume(struct device *dev) |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 165 | { |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 166 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 167 | |
Manuel Lauss | ce6bc92 | 2011-08-12 20:12:33 +0200 | [diff] [blame] | 168 | alchemy_usb_control(ALCHEMY_USB_EHCI0, 1); |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 169 | ehci_resume(hcd, false); |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 170 | |
| 171 | return 0; |
| 172 | } |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 173 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 174 | static const struct dev_pm_ops au1xxx_ehci_pmops = { |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 175 | .suspend = ehci_hcd_au1xxx_drv_suspend, |
| 176 | .resume = ehci_hcd_au1xxx_drv_resume, |
| 177 | }; |
| 178 | |
| 179 | #define AU1XXX_EHCI_PMOPS &au1xxx_ehci_pmops |
| 180 | |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 181 | #else |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 182 | #define AU1XXX_EHCI_PMOPS NULL |
Manuel Lauss | 42bfc7b | 2008-06-23 09:09:37 +0200 | [diff] [blame] | 183 | #endif |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 184 | |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 185 | static struct platform_driver ehci_hcd_au1xxx_driver = { |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 186 | .probe = ehci_hcd_au1xxx_drv_probe, |
| 187 | .remove = ehci_hcd_au1xxx_drv_remove, |
| 188 | .shutdown = usb_hcd_platform_shutdown, |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 189 | .driver = { |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 190 | .name = "au1xxx-ehci", |
| 191 | .owner = THIS_MODULE, |
Manuel Lauss | 807fcb5 | 2009-07-29 19:13:13 +0200 | [diff] [blame] | 192 | .pm = AU1XXX_EHCI_PMOPS, |
Daniel Mack | d14feb5 | 2006-06-23 21:36:07 +0100 | [diff] [blame] | 193 | } |
Jordan Crouse | 76fa9a2 | 2006-01-20 14:06:09 -0800 | [diff] [blame] | 194 | }; |
Manuel Lauss | 53c81a3 | 2008-06-23 09:08:29 +0200 | [diff] [blame] | 195 | |
| 196 | MODULE_ALIAS("platform:au1xxx-ehci"); |