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8581fd402a
cgroup.h (therefore swap.h, therefore half of the universe) includes bpf.h which in turn includes module.h and slab.h. Since we're about to get rid of that dependency we need to clean things up. v2: drop the cpu.h include from cacheinfo.h, it's not necessary and it makes riscv sensitive to ordering of include files. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Krzysztof Wilczyński <kw@linux.com> Acked-by: Peter Chen <peter.chen@kernel.org> Acked-by: SeongJae Park <sj@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/all/20211120035253.72074-1-kuba@kernel.org/ # v1 Link: https://lore.kernel.org/all/20211120165528.197359-1-kuba@kernel.org/ # cacheinfo discussion Link: https://lore.kernel.org/bpf/20211202203400.1208663-1-kuba@kernel.org
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Cadence USBSS and USBSSP DRD Driver - host side
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*
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* Copyright (C) 2018-2019 Cadence Design Systems.
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* Copyright (C) 2017-2018 NXP
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*
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* Authors: Peter Chen <peter.chen@nxp.com>
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* Pawel Laszczak <pawell@cadence.com>
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*/
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include "core.h"
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#include "drd.h"
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#include "host-export.h"
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#include <linux/usb/hcd.h>
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#include "../host/xhci.h"
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#include "../host/xhci-plat.h"
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#define XECP_PORT_CAP_REG 0x8000
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#define XECP_AUX_CTRL_REG1 0x8120
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#define CFG_RXDET_P3_EN BIT(15)
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#define LPM_2_STB_SWITCH_EN BIT(25)
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static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
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static const struct xhci_plat_priv xhci_plat_cdns3_xhci = {
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.quirks = XHCI_SKIP_PHY_INIT | XHCI_AVOID_BEI,
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.suspend_quirk = xhci_cdns3_suspend_quirk,
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};
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static int __cdns_host_init(struct cdns *cdns)
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{
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struct platform_device *xhci;
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int ret;
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struct usb_hcd *hcd;
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cdns_drd_host_on(cdns);
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xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
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if (!xhci) {
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dev_err(cdns->dev, "couldn't allocate xHCI device\n");
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return -ENOMEM;
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}
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xhci->dev.parent = cdns->dev;
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cdns->host_dev = xhci;
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ret = platform_device_add_resources(xhci, cdns->xhci_res,
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CDNS_XHCI_RESOURCES_NUM);
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if (ret) {
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dev_err(cdns->dev, "couldn't add resources to xHCI device\n");
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goto err1;
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}
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cdns->xhci_plat_data = kmemdup(&xhci_plat_cdns3_xhci,
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sizeof(struct xhci_plat_priv), GFP_KERNEL);
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if (!cdns->xhci_plat_data) {
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ret = -ENOMEM;
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goto err1;
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}
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if (cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW))
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cdns->xhci_plat_data->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
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ret = platform_device_add_data(xhci, cdns->xhci_plat_data,
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sizeof(struct xhci_plat_priv));
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if (ret)
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goto free_memory;
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ret = platform_device_add(xhci);
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if (ret) {
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dev_err(cdns->dev, "failed to register xHCI device\n");
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goto free_memory;
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}
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/* Glue needs to access xHCI region register for Power management */
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hcd = platform_get_drvdata(xhci);
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if (hcd)
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cdns->xhci_regs = hcd->regs;
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return 0;
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free_memory:
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kfree(cdns->xhci_plat_data);
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err1:
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platform_device_put(xhci);
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return ret;
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}
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static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
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{
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struct xhci_hcd *xhci = hcd_to_xhci(hcd);
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u32 value;
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if (pm_runtime_status_suspended(hcd->self.controller))
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return 0;
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/* set usbcmd.EU3S */
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value = readl(&xhci->op_regs->command);
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value |= CMD_PM_INDEX;
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writel(value, &xhci->op_regs->command);
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if (hcd->regs) {
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value = readl(hcd->regs + XECP_AUX_CTRL_REG1);
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value |= CFG_RXDET_P3_EN;
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writel(value, hcd->regs + XECP_AUX_CTRL_REG1);
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value = readl(hcd->regs + XECP_PORT_CAP_REG);
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value |= LPM_2_STB_SWITCH_EN;
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writel(value, hcd->regs + XECP_PORT_CAP_REG);
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}
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return 0;
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}
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static void cdns_host_exit(struct cdns *cdns)
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{
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kfree(cdns->xhci_plat_data);
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platform_device_unregister(cdns->host_dev);
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cdns->host_dev = NULL;
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cdns_drd_host_off(cdns);
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}
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int cdns_host_init(struct cdns *cdns)
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{
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struct cdns_role_driver *rdrv;
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rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
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if (!rdrv)
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return -ENOMEM;
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rdrv->start = __cdns_host_init;
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rdrv->stop = cdns_host_exit;
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rdrv->state = CDNS_ROLE_STATE_INACTIVE;
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rdrv->name = "host";
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cdns->roles[USB_ROLE_HOST] = rdrv;
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return 0;
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}
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