/* * Copyright 2012 Tilera Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for * more details. */ /* * Tilera TILE-Gx USB EHCI host controller driver. */ #include #include #include #include #include #include #include static void tilegx_start_ehc(void) { } static void tilegx_stop_ehc(void) { } static int tilegx_ehci_setup(struct usb_hcd *hcd) { int ret = ehci_init(hcd); /* * Some drivers do: * * struct ehci_hcd *ehci = hcd_to_ehci(hcd); * ehci->need_io_watchdog = 0; * * here, but since this is a new driver we're going to leave the * watchdog enabled. Later we may try to turn it off and see * whether we run into any problems. */ return ret; } static const struct hc_driver ehci_tilegx_hc_driver = { .description = hcd_name, .product_desc = "Tile-Gx EHCI", .hcd_priv_size = sizeof(struct ehci_hcd), /* * Generic hardware linkage. */ .irq = ehci_irq, .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * Basic lifecycle operations. */ .reset = tilegx_ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, /* * Managing I/O requests and associated device resources. */ .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, .endpoint_reset = ehci_endpoint_reset, /* * Scheduling support. */ .get_frame_number = ehci_get_frame, /* * Root hub support. */ .hub_status_data = ehci_hub_status_data, .hub_control = ehci_hub_control, .bus_suspend = ehci_bus_suspend, .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ehci_hcd_tilegx_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd; struct ehci_hcd *ehci; struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); pte_t pte = { 0 }; int my_cpu = smp_processor_id(); int ret; if (usb_disabled()) return -ENODEV; /* * Try to initialize our GXIO context; if we can't, the device * doesn't exist. */ if (gxio_usb_host_init(&pdata->usb_ctx, pdata->dev_index, 1) != 0) return -ENXIO; hcd = usb_create_hcd(&ehci_tilegx_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { ret = -ENOMEM; goto err_hcd; } /* * We don't use rsrc_start to map in our registers, but seems like * we ought to set it to something, so we use the register VA. */ hcd->rsrc_start = (ulong) gxio_usb_host_get_reg_start(&pdata->usb_ctx); hcd->rsrc_len = gxio_usb_host_get_reg_len(&pdata->usb_ctx); hcd->regs = gxio_usb_host_get_reg_start(&pdata->usb_ctx); tilegx_start_ehc(); ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; ehci->regs = hcd->regs + HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); /* cache this readonly data; minimize chip reads */ ehci->hcs_params = readl(&ehci->caps->hcs_params); /* Create our IRQs and register them. */ pdata->irq = irq_alloc_hwirq(-1); if (!pdata->irq) { ret = -ENXIO; goto err_no_irq; } tile_irq_activate(pdata->irq, TILE_IRQ_PERCPU); /* Configure interrupts. */ ret = gxio_usb_host_cfg_interrupt(&pdata->usb_ctx, cpu_x(my_cpu), cpu_y(my_cpu), KERNEL_PL, pdata->irq); if (ret) { ret = -ENXIO; goto err_have_irq; } /* Register all of our memory. */ pte = pte_set_home(pte, PAGE_HOME_HASH); ret = gxio_usb_host_register_client_memory(&pdata->usb_ctx, pte, 0); if (ret) { ret = -ENXIO; goto err_have_irq; } ret = usb_add_hcd(hcd, pdata->irq, IRQF_SHARED); if (ret == 0) { platform_set_drvdata(pdev, hcd); device_wakeup_enable(hcd->self.controller); return ret; } err_have_irq: irq_free_hwirq(pdata->irq); err_no_irq: tilegx_stop_ehc(); usb_put_hcd(hcd); err_hcd: gxio_usb_host_destroy(&pdata->usb_ctx); return ret; } static int ehci_hcd_tilegx_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); usb_remove_hcd(hcd); usb_put_hcd(hcd); tilegx_stop_ehc(); gxio_usb_host_destroy(&pdata->usb_ctx); irq_free_hwirq(pdata->irq); return 0; } static void ehci_hcd_tilegx_drv_shutdown(struct platform_device *pdev) { usb_hcd_platform_shutdown(pdev); ehci_hcd_tilegx_drv_remove(pdev); } static struct platform_driver ehci_hcd_tilegx_driver = { .probe = ehci_hcd_tilegx_drv_probe, .remove = ehci_hcd_tilegx_drv_remove, .shutdown = ehci_hcd_tilegx_drv_shutdown, .driver = { .name = "tilegx-ehci", } }; MODULE_ALIAS("platform:tilegx-ehci"); -0800 commit6d04dfc8966019b8b0977b2cb942351f13d2b178 (patch) tree2d4f239c1daff620704b77a992c1e70ce1ce6b08 /drivers/usb/gadget/function/f_printer.c parent2883aaea363f7a897ff06d2e6c73ae7aae285bcb (diff)parent06425c308b92eaf60767bc71d359f4cbc7a561f8 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller: 1) Fix handling of interrupt status in stmmac driver. Just because we have masked the event from generating interrupts, doesn't mean the bit won't still be set in the interrupt status register. From Alexey Brodkin. 2) Fix DMA API debugging splats in gianfar driver, from Arseny Solokha. 3) Fix off-by-one error in __ip6_append_data(), from Vlad Yasevich. 4) cls_flow does not match on icmpv6 codes properly, from Simon Horman. 5) Initial MAC address can be set incorrectly in some scenerios, from Ivan Vecera. 6) Packet header pointer arithmetic fix in ip6_tnl_parse_tlv_end_lim(), from Dan Carpenter. 7) Fix divide by zero in __tcp_select_window(), from Eric Dumazet. 8) Fix crash in iwlwifi when unregistering thermal zone, from Jens Axboe. 9) Check for DMA mapping errors in starfire driver, from Alexey Khoroshilov. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits) tcp: fix 0 divide in __tcp_select_window() ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim() net: fix ndo_features_check/ndo_fix_features comment ordering net/sched: matchall: Fix configuration race be2net: fix initial MAC setting ipv6: fix flow labels when the traffic class is non-0 net: thunderx: avoid dereferencing xcv when NULL net/sched: cls_flower: Correct matching on ICMPv6 code ipv6: Paritially checksum full MTU frames net/mlx4_core: Avoid command timeouts during VF driver device shutdown gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page net: ethtool: add support for 2500BaseT and 5000BaseT link modes can: bcm: fix hrtimer/tasklet termination in bcm op removal net: adaptec: starfire: add checks for dma mapping errors net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause can: Fix kernel panic at security_sock_rcv_skb net: macb: Fix 64 bit addressing support for GEM stmmac: Discard masked flags in interrupt status register net/mlx5e: Check ets capability before ets query FW command net/mlx5e: Fix update of hash function/key via ethtool ...
Diffstat (limited to 'drivers/usb/gadget/function/f_printer.c')