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>
15 #include "ci13xxx_udc.h"
17 #define MSM_USB_BASE (udc->regs)
19 static void ci13xxx_msm_notify_event(struct ci13xxx
*udc
, unsigned event
)
21 struct device
*dev
= udc
->gadget
.dev
.parent
;
25 case CI13XXX_CONTROLLER_RESET_EVENT
:
26 dev_dbg(dev
, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
27 writel(0, USB_AHBBURST
);
28 writel(0, USB_AHBMODE
);
30 case CI13XXX_CONTROLLER_STOPPED_EVENT
:
31 dev_dbg(dev
, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
33 * Put the transceiver in non-driving mode. Otherwise host
34 * may not detect soft-disconnection.
36 val
= usb_phy_io_read(udc
->transceiver
, ULPI_FUNC_CTRL
);
37 val
&= ~ULPI_FUNC_CTRL_OPMODE_MASK
;
38 val
|= ULPI_FUNC_CTRL_OPMODE_NONDRIVING
;
39 usb_phy_io_write(udc
->transceiver
, val
, ULPI_FUNC_CTRL
);
42 dev_dbg(dev
, "unknown ci13xxx_udc event\n");
47 static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver
= {
48 .name
= "ci13xxx_msm",
49 .flags
= CI13XXX_REGS_SHARED
|
50 CI13XXX_REQUIRE_TRANSCEIVER
|
51 CI13XXX_PULLUP_ON_VBUS
|
52 CI13XXX_DISABLE_STREAMING
,
54 .notify_event
= ci13xxx_msm_notify_event
,
57 static int ci13xxx_msm_probe(struct platform_device
*pdev
)
59 struct platform_device
*plat_ci
;
62 dev_dbg(&pdev
->dev
, "ci13xxx_msm_probe\n");
64 plat_ci
= platform_device_alloc("ci_udc", -1);
66 dev_err(&pdev
->dev
, "can't allocate ci_udc platform device\n");
70 ret
= platform_device_add_resources(plat_ci
, pdev
->resource
,
73 dev_err(&pdev
->dev
, "can't add resources to platform device\n");
77 ret
= platform_device_add_data(plat_ci
, &ci13xxx_msm_udc_driver
,
78 sizeof(ci13xxx_msm_udc_driver
));
82 ret
= platform_device_add(plat_ci
);
86 pm_runtime_no_callbacks(&pdev
->dev
);
87 pm_runtime_enable(&pdev
->dev
);
92 platform_device_put(plat_ci
);
97 static struct platform_driver ci13xxx_msm_driver
= {
98 .probe
= ci13xxx_msm_probe
,
99 .driver
= { .name
= "msm_hsusb", },
101 MODULE_ALIAS("platform:msm_hsusb");
103 static int __init
ci13xxx_msm_init(void)
105 return platform_driver_register(&ci13xxx_msm_driver
);
107 module_init(ci13xxx_msm_init
);
109 MODULE_LICENSE("GPL v2");