forked from Minki/linux
ef44cb4226
This patch modify the generic code handling PHYs to allow them to be supplied from the drivers. This adds checks to ensure no PHY was already there when looking for one in the generic code. This also makes sure we do not modify its state in the generic HCD functions, it was provided by the driver. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Felipe Balbi <balbi@ti.com>
119 lines
2.9 KiB
C
119 lines
2.9 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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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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usb_phy_init(ci->usb_phy);
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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 phy in non-driving mode. Otherwise host
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* may not detect soft-disconnection.
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*/
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usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN);
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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.usb_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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