0b490046d8
Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
141 lines
3.1 KiB
C
141 lines
3.1 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 "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 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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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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