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/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/usb/msm_hsusb_hw.h>
#include <linux/usb/ulpi.h>
#include <linux/usb/gadget.h>
#include <linux/usb/chipidea.h>
#include "ci.h"
#define MSM_USB_BASE (ci->hw_bank.abs)
static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
{
struct device *dev = ci->gadget.dev.parent;
int val;
switch (event) {
case CI_HDRC_CONTROLLER_RESET_EVENT:
dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
writel(0, USB_AHBBURST);
writel(0, USB_AHBMODE);
break;
case CI_HDRC_CONTROLLER_STOPPED_EVENT:
dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n");
/*
* Put the transceiver in non-driving mode. Otherwise host
* may not detect soft-disconnection.
*/
val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
break;
default:
dev_dbg(dev, "unknown ci_hdrc event\n");
break;
}
}
static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
.name = "ci_hdrc_msm",
.capoffset = DEF_CAPOFFSET,
.flags = CI_HDRC_REGS_SHARED |
CI_HDRC_REQUIRE_TRANSCEIVER |
CI_HDRC_DISABLE_STREAMING,
.notify_event = ci_hdrc_msm_notify_event,
};
static int ci_hdrc_msm_probe(struct platform_device *pdev)
{
struct platform_device *plat_ci;
struct usb_phy *phy;
dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
/*
* OTG(PHY) driver takes care of PHY initialization, clock management,
* powering up VBUS, mapping of registers address space and power
* management.
*/
phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
if (IS_ERR(phy))
return PTR_ERR(phy);
ci_hdrc_msm_platdata.phy = phy;
plat_ci = ci_hdrc_add_device(&pdev->dev,
pdev->resource, pdev->num_resources,
&ci_hdrc_msm_platdata);
if (IS_ERR(plat_ci)) {
dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
return PTR_ERR(plat_ci);
}
platform_set_drvdata(pdev, plat_ci);
pm_runtime_no_callbacks(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
}
static int ci_hdrc_msm_remove(struct platform_device *pdev)
{
struct platform_device *plat_ci = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev);
ci_hdrc_remove_device(plat_ci);
return 0;
}
static const struct of_device_id msm_ci_dt_match[] = {
{ .compatible = "qcom,ci-hdrc", },
{ }
};
MODULE_DEVICE_TABLE(of, msm_ci_dt_match);
static struct platform_driver ci_hdrc_msm_driver = {
.probe = ci_hdrc_msm_probe,
.remove = ci_hdrc_msm_remove,
.driver = {
.name = "msm_hsusb",
.of_match_table = msm_ci_dt_match,
},
};
module_platform_driver(ci_hdrc_msm_driver);
MODULE_ALIAS("platform:msm_hsusb");
MODULE_ALIAS("platform:ci13xxx_msm");
MODULE_LICENSE("GPL v2");
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