1 /* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/pm_runtime.h>
11 #include <linux/usb/msm_hsusb_hw.h>
12 #include <linux/usb/ulpi.h>
13 #include <linux/usb/gadget.h>
14 #include <linux/usb/chipidea.h>
18 #define MSM_USB_BASE (udc->regs)
20 static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
22 struct device *dev = udc->gadget.dev.parent;
26 case CI13XXX_CONTROLLER_RESET_EVENT:
27 dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
28 writel(0, USB_AHBBURST);
29 writel(0, USB_AHBMODE);
31 case CI13XXX_CONTROLLER_STOPPED_EVENT:
32 dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
34 * Put the transceiver in non-driving mode. Otherwise host
35 * may not detect soft-disconnection.
37 val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
38 val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
39 val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
40 usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
43 dev_dbg(dev, "unknown ci13xxx_udc event\n");
48 static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
49 .name = "ci13xxx_msm",
50 .flags = CI13XXX_REGS_SHARED |
51 CI13XXX_REQUIRE_TRANSCEIVER |
52 CI13XXX_PULLUP_ON_VBUS |
53 CI13XXX_DISABLE_STREAMING,
55 .notify_event = ci13xxx_msm_notify_event,
58 static int ci13xxx_msm_probe(struct platform_device *pdev)
60 struct platform_device *plat_ci;
63 dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
65 plat_ci = platform_device_alloc("ci_udc", -1);
67 dev_err(&pdev->dev, "can't allocate ci_udc platform device\n");
71 ret = platform_device_add_resources(plat_ci, pdev->resource,
74 dev_err(&pdev->dev, "can't add resources to platform device\n");
78 ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
79 sizeof(ci13xxx_msm_udc_driver));
83 ret = platform_device_add(plat_ci);
87 pm_runtime_no_callbacks(&pdev->dev);
88 pm_runtime_enable(&pdev->dev);
93 platform_device_put(plat_ci);
98 static struct platform_driver ci13xxx_msm_driver = {
99 .probe = ci13xxx_msm_probe,
100 .driver = { .name = "msm_hsusb", },
102 MODULE_ALIAS("platform:msm_hsusb");
104 static int __init ci13xxx_msm_init(void)
106 return platform_driver_register(&ci13xxx_msm_driver);
108 module_init(ci13xxx_msm_init);
110 MODULE_LICENSE("GPL v2");