mirror of https://gitee.com/openkylin/linux.git
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/usb/msm_hsusb_hw.h>
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#include <linux/usb/ulpi.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/chipidea.h>
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#include "ci.h"
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#define MSM_USB_BASE (udc->hw_bank.abs)
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static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
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{
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struct device *dev = udc->gadget.dev.parent;
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int val;
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switch (event) {
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case CI13XXX_CONTROLLER_RESET_EVENT:
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dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
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writel(0, USB_AHBBURST);
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writel(0, USB_AHBMODE);
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break;
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case CI13XXX_CONTROLLER_STOPPED_EVENT:
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dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
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/*
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* Put the transceiver in non-driving mode. Otherwise host
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* may not detect soft-disconnection.
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*/
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val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
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val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
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val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
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usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
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break;
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default:
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dev_dbg(dev, "unknown ci13xxx_udc event\n");
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break;
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}
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}
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static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
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.name = "ci13xxx_msm",
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.flags = CI13XXX_REGS_SHARED |
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CI13XXX_REQUIRE_TRANSCEIVER |
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CI13XXX_PULLUP_ON_VBUS |
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CI13XXX_DISABLE_STREAMING,
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.notify_event = ci13xxx_msm_notify_event,
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};
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static int ci13xxx_msm_probe(struct platform_device *pdev)
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{
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struct platform_device *plat_ci;
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int ret;
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dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
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plat_ci = platform_device_alloc("ci_hdrc", -1);
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if (!plat_ci) {
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dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
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return -ENOMEM;
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}
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ret = platform_device_add_resources(plat_ci, pdev->resource,
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pdev->num_resources);
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if (ret) {
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dev_err(&pdev->dev, "can't add resources to platform device\n");
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goto put_platform;
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}
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ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
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sizeof(ci13xxx_msm_udc_driver));
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if (ret)
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goto put_platform;
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ret = platform_device_add(plat_ci);
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if (ret)
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goto put_platform;
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pm_runtime_no_callbacks(&pdev->dev);
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pm_runtime_enable(&pdev->dev);
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return 0;
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put_platform:
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platform_device_put(plat_ci);
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return ret;
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}
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static struct platform_driver ci13xxx_msm_driver = {
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.probe = ci13xxx_msm_probe,
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.driver = { .name = "msm_hsusb", },
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};
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MODULE_ALIAS("platform:msm_hsusb");
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static int __init ci13xxx_msm_init(void)
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{
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return platform_driver_register(&ci13xxx_msm_driver);
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}
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module_init(ci13xxx_msm_init);
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MODULE_LICENSE("GPL v2");
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