122 lines
3.0 KiB
C
122 lines
3.0 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 (ci->hw_bank.abs)
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static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
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{
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struct device *dev = ci->gadget.dev.parent;
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int val;
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switch (event) {
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case CI_HDRC_CONTROLLER_RESET_EVENT:
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dev_dbg(dev, "CI_HDRC_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 CI_HDRC_CONTROLLER_STOPPED_EVENT:
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dev_dbg(dev, "CI_HDRC_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(ci->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(ci->transceiver, val, ULPI_FUNC_CTRL);
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break;
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default:
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dev_dbg(dev, "unknown ci_hdrc event\n");
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break;
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}
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}
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static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
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.name = "ci_hdrc_msm",
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.capoffset = DEF_CAPOFFSET,
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.flags = CI_HDRC_REGS_SHARED |
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CI_HDRC_REQUIRE_TRANSCEIVER |
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CI_HDRC_DISABLE_STREAMING,
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.notify_event = ci_hdrc_msm_notify_event,
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};
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static int ci_hdrc_msm_probe(struct platform_device *pdev)
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{
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struct platform_device *plat_ci;
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struct usb_phy *phy;
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dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
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/*
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* OTG(PHY) driver takes care of PHY initialization, clock management,
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* powering up VBUS, mapping of registers address space and power
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* management.
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*/
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phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
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if (IS_ERR(phy))
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return PTR_ERR(phy);
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ci_hdrc_msm_platdata.phy = phy;
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plat_ci = ci_hdrc_add_device(&pdev->dev,
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pdev->resource, pdev->num_resources,
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&ci_hdrc_msm_platdata);
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if (IS_ERR(plat_ci)) {
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dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
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return PTR_ERR(plat_ci);
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}
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platform_set_drvdata(pdev, plat_ci);
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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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}
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static int ci_hdrc_msm_remove(struct platform_device *pdev)
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{
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struct platform_device *plat_ci = platform_get_drvdata(pdev);
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pm_runtime_disable(&pdev->dev);
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ci_hdrc_remove_device(plat_ci);
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return 0;
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}
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static const struct of_device_id msm_ci_dt_match[] = {
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{ .compatible = "qcom,ci-hdrc", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, msm_ci_dt_match);
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static struct platform_driver ci_hdrc_msm_driver = {
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.probe = ci_hdrc_msm_probe,
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.remove = ci_hdrc_msm_remove,
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.driver = {
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.name = "msm_hsusb",
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.of_match_table = msm_ci_dt_match,
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},
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};
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module_platform_driver(ci_hdrc_msm_driver);
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MODULE_ALIAS("platform:msm_hsusb");
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MODULE_ALIAS("platform:ci13xxx_msm");
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MODULE_LICENSE("GPL v2");
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