/* * 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 OHCI host controller driver. */ #include #include #include #include #include #include #include static void tilegx_start_ohc(void) { } static void tilegx_stop_ohc(void) { } static int tilegx_ohci_start(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); int ret; ret = ohci_init(ohci); if (ret < 0) return ret; ret = ohci_run(ohci); if (ret < 0) { dev_err(hcd->self.controller, "can't start %s\n", hcd->self.bus_name); ohci_stop(hcd); return ret; } return 0; } static const struct hc_driver ohci_tilegx_hc_driver = { .description = hcd_name, .product_desc = "Tile-Gx OHCI", .hcd_priv_size = sizeof(struct ohci_hcd), /* * Generic hardware linkage. */ .irq = ohci_irq, .flags = HCD_MEMORY | HCD_LOCAL_MEM | HCD_USB11, /* * Basic lifecycle operations. */ .start = tilegx_ohci_start, .stop = ohci_stop, .shutdown = ohci_shutdown, /* * Managing I/O requests and associated device resources. */ .urb_enqueue = ohci_urb_enqueue, .urb_dequeue = ohci_urb_dequeue, .endpoint_disable = ohci_endpoint_disable, /* * Scheduling support. */ .get_frame_number = ohci_get_frame, /* * Root hub support. */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, .start_port_reset = ohci_start_port_reset, }; static int ohci_hcd_tilegx_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd; 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, 0) != 0) return -ENXIO; hcd = usb_create_hcd(&ohci_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_ohc(); /* 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; } ohci_hcd_init(hcd_to_ohci(hcd)); 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_ohc(); usb_put_hcd(hcd); err_hcd: gxio_usb_host_destroy(&pdata->usb_ctx); return ret; } static int ohci_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_ohc(); gxio_usb_host_destroy(&pdata->usb_ctx); irq_free_hwirq(pdata->irq); return 0; } static void ohci_hcd_tilegx_drv_shutdown(struct platform_device *pdev) { usb_hcd_platform_shutdown(pdev); ohci_hcd_tilegx_drv_remove(pdev); } static struct platform_driver ohci_hcd_tilegx_driver = { .probe = ohci_hcd_tilegx_drv_probe, .remove = ohci_hcd_tilegx_drv_remove, .shutdown = ohci_hcd_tilegx_drv_shutdown, .driver = { .name = "tilegx-ohci", } }; MODULE_ALIAS("platform:tilegx-ohci"); '1'>ignoremode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-09 17:46:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-09 17:46:30 -0800
commit3d88460dbd285e7f32437b530d5bb7cb916142fa (patch)
tree3cc4f479bb3813bb4804f5ed4d52a493003c9fa5 /drivers/usb/dwc3/gadget.c
parent55aac6ef53e114c28170ee3f79065cfa8ca9cf3f (diff)
parent697d3a21615672b2bf7724a65755799260325dda (diff)
Merge tag 'drm-fixes-for-v4.10-rc8' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie: "This should be the final set of drm fixes for 4.10: one vmwgfx boot fix, one vc4 fix, and a few i915 fixes: * tag 'drm-fixes-for-v4.10-rc8' of git://people.freedesktop.org/~airlied/linux: drm: vc4: adapt to new behaviour of drm_crtc.c drm/i915: Always convert incoming exec offsets to non-canonical drm/i915: Remove overzealous fence warn on runtime suspend drm/i915/bxt: Add MST support when do DPLL calculation drm/i915: don't warn about Skylake CPU - KabyPoint PCH combo drm/i915: fix i915 running as dom0 under Xen drm/i915: Flush untouched framebuffers before display on !llc drm/i915: fix use-after-free in page_flip_completed() drm/vmwgfx: Fix depth input into drm_mode_legacy_fb_format
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')