176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse/* 276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * EHCI HCD (Host Controller Driver) for USB. 376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * 476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * Bus Glue for AMD Alchemy Au1xxx 576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * 676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org> 776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * 876fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * Modified for AMD Alchemy Au1200 EHC 976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * by K.Boge <karsten.boge@amd.com> 1076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * 1176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse * This file is licenced under the GPL. 1276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse */ 1376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 1476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse#include <linux/platform_device.h> 1576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse#include <asm/mach-au1x00/au1000.h> 1676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 1776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 1876fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouseextern int usb_disabled(void); 1976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 209757de384451a606af8c722213cb973192cbbd1bManuel Laussstatic int au1xxx_ehci_setup(struct usb_hcd *hcd) 219757de384451a606af8c722213cb973192cbbd1bManuel Lauss{ 229757de384451a606af8c722213cb973192cbbd1bManuel Lauss struct ehci_hcd *ehci = hcd_to_ehci(hcd); 239757de384451a606af8c722213cb973192cbbd1bManuel Lauss int ret = ehci_init(hcd); 249757de384451a606af8c722213cb973192cbbd1bManuel Lauss 259757de384451a606af8c722213cb973192cbbd1bManuel Lauss ehci->need_io_watchdog = 0; 26876e0df902c726408c84b75dab673a90fd492e1dGeoff Levand ehci_reset(ehci); 279757de384451a606af8c722213cb973192cbbd1bManuel Lauss return ret; 289757de384451a606af8c722213cb973192cbbd1bManuel Lauss} 299757de384451a606af8c722213cb973192cbbd1bManuel Lauss 3053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Laussstatic const struct hc_driver ehci_au1xxx_hc_driver = { 3153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .description = hcd_name, 3253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .product_desc = "Au1xxx EHCI", 3353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .hcd_priv_size = sizeof(struct ehci_hcd), 3476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 3553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss /* 3653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * generic hardware linkage 3753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss */ 3853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .irq = ehci_irq, 3953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .flags = HCD_MEMORY | HCD_USB2, 4076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 4153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss /* 4253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * basic lifecycle operations 4353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * 4453c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * FIXME -- ehci_init() doesn't do enough here. 4553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * See ehci-ppc-soc for a complete implementation. 4653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss */ 479757de384451a606af8c722213cb973192cbbd1bManuel Lauss .reset = au1xxx_ehci_setup, 4853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .start = ehci_run, 4953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .stop = ehci_stop, 5053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .shutdown = ehci_shutdown, 5153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 5253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss /* 5353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * managing i/o requests and associated device resources 5453c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss */ 5553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .urb_enqueue = ehci_urb_enqueue, 5653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .urb_dequeue = ehci_urb_dequeue, 5753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .endpoint_disable = ehci_endpoint_disable, 58b18ffd49e86102a9ed0a1cc83fdafe3891e844e5Alan Stern .endpoint_reset = ehci_endpoint_reset, 5953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 6053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss /* 6153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * scheduling support 6253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss */ 6353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .get_frame_number = ehci_get_frame, 6453c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 6553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss /* 6653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss * root hub support 6753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss */ 6853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .hub_status_data = ehci_hub_status_data, 6953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .hub_control = ehci_hub_control, 7053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .bus_suspend = ehci_bus_suspend, 7153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .bus_resume = ehci_bus_resume, 7253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .relinquish_port = ehci_relinquish_port, 7353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .port_handed_over = ehci_port_handed_over, 74914b701280a76f96890ad63eb0fa99bf204b961cAlan Stern 75914b701280a76f96890ad63eb0fa99bf204b961cAlan Stern .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, 7653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss}; 7753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 7853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Laussstatic int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) 7976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse{ 8076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse struct usb_hcd *hcd; 8176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse struct ehci_hcd *ehci; 821f141ca2b1f40088203fba061cc7b1f8da7c38abH Hartley Sweeten struct resource *res; 8353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss int ret; 8476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 8553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss if (usb_disabled()) 8653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss return -ENODEV; 8776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 8853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss if (pdev->resource[1].flags != IORESOURCE_IRQ) { 8976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse pr_debug("resource[1] is not IORESOURCE_IRQ"); 9053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss return -ENOMEM; 9176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse } 9253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx"); 9376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse if (!hcd) 9476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse return -ENOMEM; 9553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 961f141ca2b1f40088203fba061cc7b1f8da7c38abH Hartley Sweeten res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 971f141ca2b1f40088203fba061cc7b1f8da7c38abH Hartley Sweeten hcd->rsrc_start = res->start; 981f141ca2b1f40088203fba061cc7b1f8da7c38abH Hartley Sweeten hcd->rsrc_len = resource_size(res); 9976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 10076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { 10176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse pr_debug("request_mem_region failed"); 10253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss ret = -EBUSY; 10376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse goto err1; 10476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse } 10576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 10676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); 10776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse if (!hcd->regs) { 10876fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse pr_debug("ioremap failed"); 10953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss ret = -ENOMEM; 11076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse goto err2; 11176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse } 11276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 113ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss if (alchemy_usb_control(ALCHEMY_USB_EHCI0, 1)) { 114ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss printk(KERN_INFO "%s: controller init failed!\n", pdev->name); 115ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss ret = -ENODEV; 116ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss goto err3; 117ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss } 11853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 11976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse ehci = hcd_to_ehci(hcd); 12076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse ehci->caps = hcd->regs; 121c430131a02d677aa708f56342c1565edfdacb3c0Jan Andersson ehci->regs = hcd->regs + 122c430131a02d677aa708f56342c1565edfdacb3c0Jan Andersson HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); 12376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse /* cache this readonly data; minimize chip reads */ 12476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse ehci->hcs_params = readl(&ehci->caps->hcs_params); 12576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 12653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss ret = usb_add_hcd(hcd, pdev->resource[1].start, 127b5dd18d8747010e3f3eb1cc76a49f94291938559Yong Zhang IRQF_SHARED); 12853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss if (ret == 0) { 12953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss platform_set_drvdata(pdev, hcd); 13053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss return ret; 13153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss } 13276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 133ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); 134ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lausserr3: 13576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse iounmap(hcd->regs); 13676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouseerr2: 13776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 13876fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouseerr1: 13976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse usb_put_hcd(hcd); 14053c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss return ret; 14176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse} 14276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 14353c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Laussstatic int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) 14476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse{ 14553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss struct usb_hcd *hcd = platform_get_drvdata(pdev); 14653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 14776fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse usb_remove_hcd(hcd); 148ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); 14976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse iounmap(hcd->regs); 15076fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 15176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse usb_put_hcd(hcd); 15253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss platform_set_drvdata(pdev, NULL); 15376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 15476fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse return 0; 15576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse} 15676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 15742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss#ifdef CONFIG_PM 158807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Laussstatic int ehci_hcd_au1xxx_drv_suspend(struct device *dev) 15976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse{ 160807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss struct usb_hcd *hcd = dev_get_drvdata(dev); 16142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss struct ehci_hcd *ehci = hcd_to_ehci(hcd); 16242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss unsigned long flags; 163a7535ac05443f234b9c68389fc053976383feca4Manuel Lauss int rc = 0; 16442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 16542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss if (time_before(jiffies, ehci->next_statechange)) 16642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss msleep(10); 16742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 16842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* Root hub was already suspended. Disable irq emission and 16916032c4f5b291af541e9114a09ea20ff5a0dc474Alan Stern * mark HW unaccessible. The PM and USB cores make sure that 17016032c4f5b291af541e9114a09ea20ff5a0dc474Alan Stern * the root hub is either suspended or stopped. 17142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss */ 1724147200d25c423e627ab4487530b3d9f2ef829c8Alan Stern ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); 173148fc55fd0449683a1d15bf219ad8d8b6fa17545Yin Kangkai spin_lock_irqsave(&ehci->lock, flags); 17442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_writel(ehci, 0, &ehci->regs->intr_enable); 17542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss (void)ehci_readl(ehci, &ehci->regs->intr_enable); 17642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 17742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 17842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss spin_unlock_irqrestore(&ehci->lock, flags); 17942bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 18042bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss // could save FLADJ in case of Vaux power loss 18142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss // ... we'd only use it to handle clock skew 18242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 183ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); 184a7535ac05443f234b9c68389fc053976383feca4Manuel Lauss 18542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss return rc; 18676fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse} 18742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 188807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Laussstatic int ehci_hcd_au1xxx_drv_resume(struct device *dev) 18976fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse{ 190807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss struct usb_hcd *hcd = dev_get_drvdata(dev); 19142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss struct ehci_hcd *ehci = hcd_to_ehci(hcd); 19242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 193ce6bc92285cabd0df1f154a9ef5aeb937b6de57eManuel Lauss alchemy_usb_control(ALCHEMY_USB_EHCI0, 1); 19442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 19542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss // maybe restore FLADJ 19642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 19742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss if (time_before(jiffies, ehci->next_statechange)) 19842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss msleep(100); 19942bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 20042bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* Mark hardware accessible again as we are out of D3 state by now */ 20142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 20242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 20342bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* If CF is still set, we maintained PCI Vaux power. 20442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss * Just undo the effect of ehci_pci_suspend(). 20542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss */ 20642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { 20742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss int mask = INTR_MASK; 20842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 20916032c4f5b291af541e9114a09ea20ff5a0dc474Alan Stern ehci_prepare_ports_for_controller_resume(ehci); 21042bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss if (!hcd->self.root_hub->do_remote_wakeup) 21142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss mask &= ~STS_PCD; 21242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_writel(ehci, mask, &ehci->regs->intr_enable); 21342bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_readl(ehci, &ehci->regs->intr_enable); 21442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss return 0; 21542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss } 21642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 21742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_dbg(ehci, "lost power, restarting\n"); 21842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss usb_root_hub_lost_power(hcd->self.root_hub); 21942bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 22042bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* Else reset, to cope with power loss or flush-to-storage 22142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss * style "resume" having let BIOS kick in during reboot. 22242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss */ 22342bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss (void) ehci_halt(ehci); 22442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss (void) ehci_reset(ehci); 22542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 22642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* emptying the schedule aborts any urbs */ 22742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss spin_lock_irq(&ehci->lock); 22842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss if (ehci->reclaim) 22942bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss end_unlink_async(ehci); 23042bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_work(ehci); 23142bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss spin_unlock_irq(&ehci->lock); 23242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 23342bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_writel(ehci, ehci->command, &ehci->regs->command); 23442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); 23542bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ 23642bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 23742bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss /* here we "know" root ports should always stay powered */ 23842bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss ehci_port_power(ehci, 1); 23942bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 240e8799906045302776b35b66b16495c575db3b69cAlan Stern ehci->rh_state = EHCI_RH_SUSPENDED; 24176fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse 24276fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse return 0; 24376fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse} 24442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss 245471452104b8520337ae2fb48c4e61cd4896e025dAlexey Dobriyanstatic const struct dev_pm_ops au1xxx_ehci_pmops = { 246807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss .suspend = ehci_hcd_au1xxx_drv_suspend, 247807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss .resume = ehci_hcd_au1xxx_drv_resume, 248807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss}; 249807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss 250807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss#define AU1XXX_EHCI_PMOPS &au1xxx_ehci_pmops 251807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss 25242bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss#else 253807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss#define AU1XXX_EHCI_PMOPS NULL 25442bfc7b44f724fb5ce838fc2f552a3eb8cd768ecManuel Lauss#endif 25553c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 256d14feb5ee4a46218f92b21ed52338b64130a151bDaniel Mackstatic struct platform_driver ehci_hcd_au1xxx_driver = { 25753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .probe = ehci_hcd_au1xxx_drv_probe, 25853c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .remove = ehci_hcd_au1xxx_drv_remove, 25953c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .shutdown = usb_hcd_platform_shutdown, 260d14feb5ee4a46218f92b21ed52338b64130a151bDaniel Mack .driver = { 26153c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .name = "au1xxx-ehci", 26253c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss .owner = THIS_MODULE, 263807fcb5e19877d339a4cc56f2c6ddaf3a147457aManuel Lauss .pm = AU1XXX_EHCI_PMOPS, 264d14feb5ee4a46218f92b21ed52338b64130a151bDaniel Mack } 26576fa9a240de4294a097235c9ddd470c21eb3449eJordan Crouse}; 26653c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel Lauss 26753c81a348fa1d21dd042d9c9a9f91795f83fed66Manuel LaussMODULE_ALIAS("platform:au1xxx-ehci"); 268