62bb84ed0e
Let's break ci13xxx driver into a separate udc driver and platform drivers _pci and _msm, which will create a platform device for each pci (or msm) device found. The approach was introduced by Felipe in dwc3 driver and there seems to be no reason not to use it. msm related code is only compile-tested. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
110 lines
2.7 KiB
C
110 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 "ci13xxx_udc.h"
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#define MSM_USB_BASE (udc->regs)
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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_udc", -1);
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if (!plat_ci) {
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dev_err(&pdev->dev, "can't allocate ci_udc 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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