/* Copyright (c) 2010, Code Aurora Forum. 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 version 2 and * only version 2 as published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include "ci.h" #define MSM_USB_BASE (ci->hw_bank.abs) static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event) { struct device *dev = ci->gadget.dev.parent; switch (event) { case CI_HDRC_CONTROLLER_RESET_EVENT: dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n"); writel(0, USB_AHBBURST); /* use AHB transactor, allow posted data writes */ writel(0x8, USB_AHBMODE); usb_phy_init(ci->usb_phy); break; case CI_HDRC_CONTROLLER_STOPPED_EVENT: dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n"); /* * Put the phy in non-driving mode. Otherwise host * may not detect soft-disconnection. */ usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN); break; default: dev_dbg(dev, "unknown ci_hdrc event\n"); break; } } static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = { .name = "ci_hdrc_msm", .capoffset = DEF_CAPOFFSET, .flags = CI_HDRC_REGS_SHARED | CI_HDRC_DISABLE_STREAMING, .notify_event = ci_hdrc_msm_notify_event, }; static int ci_hdrc_msm_probe(struct platform_device *pdev) { struct platform_device *plat_ci; struct usb_phy *phy; dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n"); /* * OTG(PHY) driver takes care of PHY initialization, clock management, * powering up VBUS, mapping of registers address space and power * management. */ phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); if (IS_ERR(phy)) return PTR_ERR(phy); ci_hdrc_msm_platdata.usb_phy = phy; plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource, pdev->num_resources, &ci_hdrc_msm_platdata); if (IS_ERR(plat_ci)) { dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); return PTR_ERR(plat_ci); } platform_set_drvdata(pdev, plat_ci); pm_runtime_no_callbacks(&pdev->dev); pm_runtime_enable(&pdev->dev); return 0; } static int ci_hdrc_msm_remove(struct platform_device *pdev) { struct platform_device *plat_ci = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); ci_hdrc_remove_device(plat_ci); return 0; } static const struct of_device_id msm_ci_dt_match[] = { { .compatible = "qcom,ci-hdrc", }, { } }; MODULE_DEVICE_TABLE(of, msm_ci_dt_match); static struct platform_driver ci_hdrc_msm_driver = { .probe = ci_hdrc_msm_probe, .remove = ci_hdrc_msm_remove, .driver = { .name = "msm_hsusb", .of_match_table = msm_ci_dt_match, }, }; module_platform_driver(ci_hdrc_msm_driver); MODULE_ALIAS("platform:msm_hsusb"); MODULE_ALIAS("platform:ci13xxx_msm"); MODULE_LICENSE("GPL v2"); 0de0a94d9ad8b3ce2d0'>jvmti
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /tools/perf/jvmti
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'tools/perf/jvmti')