/* * Driver for EHCI HCD on SPEAr SOC * * Copyright (C) 2010 ST Micro Electronics, * Deepak Sikri * * Based on various ehci-*.c drivers * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include #include #include #include #include #include #include #include #include #include #include #include "ehci.h" #define DRIVER_DESC "EHCI SPEAr driver" static const char hcd_name[] = "SPEAr-ehci"; struct spear_ehci { struct clk *clk; }; #define to_spear_ehci(hcd) (struct spear_ehci *)(hcd_to_ehci(hcd)->priv) static struct hc_driver __read_mostly ehci_spear_hc_driver; #ifdef CONFIG_PM_SLEEP static int ehci_spear_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); bool do_wakeup = device_may_wakeup(dev); return ehci_suspend(hcd, do_wakeup); } static int ehci_spear_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); ehci_resume(hcd, false); return 0; } #endif /* CONFIG_PM_SLEEP */ static SIMPLE_DEV_PM_OPS(ehci_spear_pm_ops, ehci_spear_drv_suspend, ehci_spear_drv_resume); static int spear_ehci_hcd_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd ; struct spear_ehci *sehci; struct resource *res; struct clk *usbh_clk; const struct hc_driver *driver = &ehci_spear_hc_driver; int irq, retval; if (usb_disabled()) return -ENODEV; irq = platform_get_irq(pdev, 0); if (irq < 0) { retval = irq; goto fail; } /* * Right now device-tree probed devices don't get dma_mask set. * Since shared usb code relies on it, set it here for now. * Once we have dma capability bindings this can go away. */ retval = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (retval) goto fail; usbh_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(usbh_clk)) { dev_err(&pdev->dev, "Error getting interface clock\n"); retval = PTR_ERR(usbh_clk); goto fail; } hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { retval = -ENOMEM; goto fail; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hcd->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(hcd->regs)) { retval = PTR_ERR(hcd->regs); goto err_put_hcd; } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); sehci = to_spear_ehci(hcd); sehci->clk = usbh_clk; /* registers start at offset 0x0 */ hcd_to_ehci(hcd)->caps = hcd->regs; clk_prepare_enable(sehci->clk); retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval) goto err_stop_ehci; device_wakeup_enable(hcd->self.controller); return retval; err_stop_ehci: clk_disable_unprepare(sehci->clk); err_put_hcd: usb_put_hcd(hcd); fail: dev_err(&pdev->dev, "init fail, %d\n", retval); return retval ; } static int spear_ehci_hcd_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); struct spear_ehci *sehci = to_spear_ehci(hcd); usb_remove_hcd(hcd); if (sehci->clk) clk_disable_unprepare(sehci->clk); usb_put_hcd(hcd); return 0; } static const struct of_device_id spear_ehci_id_table[] = { { .compatible = "st,spear600-ehci", }, { }, }; MODULE_DEVICE_TABLE(of, spear_ehci_id_table); static struct platform_driver spear_ehci_hcd_driver = { .probe = spear_ehci_hcd_drv_probe, .remove = spear_ehci_hcd_drv_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "spear-ehci", .bus = &platform_bus_type, .pm = &ehci_spear_pm_ops, .of_match_table = spear_ehci_id_table, } }; static const struct ehci_driver_overrides spear_overrides __initconst = { .extra_priv_size = sizeof(struct spear_ehci), }; static int __init ehci_spear_init(void) { if (usb_disabled()) return -ENODEV; pr_info("%s: " DRIVER_DESC "\n", hcd_name); ehci_init_driver(&ehci_spear_hc_driver, &spear_overrides); return platform_driver_register(&spear_ehci_hcd_driver); } module_init(ehci_spear_init); static void __exit ehci_spear_cleanup(void) { platform_driver_unregister(&spear_ehci_hcd_driver); } module_exit(ehci_spear_cleanup); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_ALIAS("platform:spear-ehci"); MODULE_AUTHOR("Deepak Sikri"); MODULE_LICENSE("GPL"); /tr>
authorWaldemar Rymarkiewicz <ext.waldemar.rymarkiewicz@tieto.com>2017-01-27 19:52:19 +0200
committerKalle Valo <kvalo@qca.qualcomm.com>2017-01-27 21:28:55 +0200
commitf2593cb1b29185d38db706cbcbe22ed538720ae1 (patch)
tree22436d9a16f7c332a0afac53af743b5d59afd817 /drivers
parent1ad38fd719da87980480886f21130053c73007ac (diff)
ath10k: Search SMBIOS for OEM board file extension
Board Data File (BDF) is loaded upon driver boot-up procedure. The right board data file is identified, among others, by device and sybsystem ids. The problem, however, can occur when the (default) board data file cannot fulfill with the vendor requirements and it is necessary to use a different board data file. To solve the issue QCA uses SMBIOS type 0xF8 to store Board Data File Name Extension to specify the extension/variant name. The driver will take the extension suffix into consideration and will load the right (non-default) board data file if necessary. If it is unnecessary to use extension board data file, please leave the SMBIOS field blank and default configuration will be used. Example: If a default board data file for a specific board is identified by a string "bus=pci,vendor=168c,device=003e,subsystem-vendor=1028, subsystem-device=0310" then the OEM specific data file, if used, could be identified by variant suffix: "bus=pci,vendor=168c,device=003e,subsystem-vendor=1028, subsystem-device=0310,variant=DE_1AB" Signed-off-by: Waldemar Rymarkiewicz <ext.waldemar.rymarkiewicz@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers')