[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / chipidea / ci13xxx_msm.c

/* 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	(udc->regs)

static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
{
	struct device *dev = udc->gadget.dev.parent;
	int val;

	switch (event) {
	case CI13XXX_CONTROLLER_RESET_EVENT:
		dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
		writel(0, USB_AHBBURST);
		writel(0, USB_AHBMODE);
		break;
	case CI13XXX_CONTROLLER_STOPPED_EVENT:
		dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
		/*
		 * Put the transceiver in non-driving mode. Otherwise host
		 * may not detect soft-disconnection.
		 */
		val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
		val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
		usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
		break;
	default:
		dev_dbg(dev, "unknown ci13xxx_udc event\n");
		break;
	}
}

static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
	.name			= "ci13xxx_msm",
	.flags			= CI13XXX_REGS_SHARED |
				  CI13XXX_REQUIRE_TRANSCEIVER |
				  CI13XXX_PULLUP_ON_VBUS |
				  CI13XXX_DISABLE_STREAMING,

	.notify_event		= ci13xxx_msm_notify_event,
};

static int ci13xxx_msm_probe(struct platform_device *pdev)
{
	struct platform_device *plat_ci;
	int ret;

	dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");

	plat_ci = platform_device_alloc("ci_udc", -1);
	if (!plat_ci) {
		dev_err(&pdev->dev, "can't allocate ci_udc platform device\n");
		return -ENOMEM;
	}

	ret = platform_device_add_resources(plat_ci, pdev->resource,
					    pdev->num_resources);
	if (ret) {
		dev_err(&pdev->dev, "can't add resources to platform device\n");
		goto put_platform;
	}

	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
				       sizeof(ci13xxx_msm_udc_driver));
	if (ret)
		goto put_platform;

	ret = platform_device_add(plat_ci);
	if (ret)
		goto put_platform;

	pm_runtime_no_callbacks(&pdev->dev);
	pm_runtime_enable(&pdev->dev);

	return 0;

put_platform:
	platform_device_put(plat_ci);

	return ret;
}

static struct platform_driver ci13xxx_msm_driver = {
	.probe = ci13xxx_msm_probe,
	.driver = { .name = "msm_hsusb", },
};
MODULE_ALIAS("platform:msm_hsusb");

static int __init ci13xxx_msm_init(void)
{
	return platform_driver_register(&ci13xxx_msm_driver);
}
module_init(ci13xxx_msm_init);

MODULE_LICENSE("GPL v2");
Commit	Line	Data
33f82f38 PK	1	/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
	2	*
	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.
33f82f38 PK	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/platform_device.h>
2d0cdcc5	10	#include <linux/pm_runtime.h>
33f82f38 PK	11	#include <linux/usb/msm_hsusb_hw.h>
33f82f38 PK	12	#include <linux/usb/ulpi.h>
62bb84ed	13	#include <linux/usb/gadget.h>
e443b333	14	#include <linux/usb/chipidea.h>
33f82f38	15
e443b333	16	#include "ci.h"
33f82f38 PK	17
	18	#define MSM_USB_BASE (udc->regs)
	19
33f82f38 PK	20	static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
	21	{
	22	struct device *dev = udc->gadget.dev.parent;
	23	int val;
	24
	25	switch (event) {
	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);
	30	break;
	31	case CI13XXX_CONTROLLER_STOPPED_EVENT:
	32	dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
	33	/*
	34	* Put the transceiver in non-driving mode. Otherwise host
	35	* may not detect soft-disconnection.
	36	*/
b96d3b08	37	val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
33f82f38 PK	38	val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
33f82f38 PK	39	val \|= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
b96d3b08	40	usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
33f82f38 PK	41	break;
	42	default:
	43	dev_dbg(dev, "unknown ci13xxx_udc event\n");
	44	break;
	45	}
	46	}
	47
	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,
	54
	55	.notify_event = ci13xxx_msm_notify_event,
	56	};
	57
	58	static int ci13xxx_msm_probe(struct platform_device *pdev)
	59	{
62bb84ed	60	struct platform_device *plat_ci;
33f82f38 PK	61	int ret;
	62
	63	dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
	64
62bb84ed AS	65	plat_ci = platform_device_alloc("ci_udc", -1);
	66	if (!plat_ci) {
	67	dev_err(&pdev->dev, "can't allocate ci_udc platform device\n");
33f82f38 PK	68	return -ENOMEM;
	69	}
	70
62bb84ed AS	71	ret = platform_device_add_resources(plat_ci, pdev->resource,
	72	pdev->num_resources);
	73	if (ret) {
	74	dev_err(&pdev->dev, "can't add resources to platform device\n");
	75	goto put_platform;
33f82f38 PK	76	}
33f82f38 PK	77
62bb84ed AS	78	ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
	79	sizeof(ci13xxx_msm_udc_driver));
	80	if (ret)
	81	goto put_platform;
33f82f38	82
62bb84ed AS	83	ret = platform_device_add(plat_ci);
	84	if (ret)
	85	goto put_platform;
33f82f38	86
2d0cdcc5 PK	87	pm_runtime_no_callbacks(&pdev->dev);
	88	pm_runtime_enable(&pdev->dev);
	89
33f82f38 PK	90	return 0;
33f82f38 PK	91
62bb84ed AS	92	put_platform:
62bb84ed AS	93	platform_device_put(plat_ci);
33f82f38 PK	94
	95	return ret;
	96	}
	97
	98	static struct platform_driver ci13xxx_msm_driver = {
	99	.probe = ci13xxx_msm_probe,
	100	.driver = { .name = "msm_hsusb", },
	101	};
86081d7b	102	MODULE_ALIAS("platform:msm_hsusb");
33f82f38 PK	103
	104	static int __init ci13xxx_msm_init(void)
	105	{
	106	return platform_driver_register(&ci13xxx_msm_driver);
	107	}
	108	module_init(ci13xxx_msm_init);
4703d2e9 MKB	109
4703d2e9 MKB	110	MODULE_LICENSE("GPL v2");