[linux-2.6-block.git] / drivers / usb / gadget / 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 "ci13xxx_udc.c"

#define MSM_USB_BASE	(udc->regs)

static irqreturn_t msm_udc_irq(int irq, void *data)
{
	return udc_irq();
}

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 = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
		val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
		otg_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 resource *res;
	void __iomem *regs;
	int irq;
	int ret;

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

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "failed to get platform resource mem\n");
		return -ENXIO;
	}

	regs = ioremap(res->start, resource_size(res));
	if (!regs) {
		dev_err(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

	ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs);
	if (ret < 0) {
		dev_err(&pdev->dev, "udc_probe failed\n");
		goto iounmap;
	}

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "IRQ not found\n");
		ret = -ENXIO;
		goto udc_remove;
	}

	ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev);
	if (ret < 0) {
		dev_err(&pdev->dev, "request_irq failed\n");
		goto udc_remove;
	}

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

	return 0;

udc_remove:
	udc_remove();
iounmap:
	iounmap(regs);

	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);
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>
	12	#include <linux/usb/ulpi.h>
	13
	14	#include "ci13xxx_udc.c"
	15
	16	#define MSM_USB_BASE (udc->regs)
	17
	18	static irqreturn_t msm_udc_irq(int irq, void *data)
	19	{
	20	return udc_irq();
	21	}
	22
	23	static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
	24	{
	25	struct device *dev = udc->gadget.dev.parent;
	26	int val;
	27
	28	switch (event) {
	29	case CI13XXX_CONTROLLER_RESET_EVENT:
	30	dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
	31	writel(0, USB_AHBBURST);
	32	writel(0, USB_AHBMODE);
	33	break;
	34	case CI13XXX_CONTROLLER_STOPPED_EVENT:
	35	dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
	36	/*
	37	* Put the transceiver in non-driving mode. Otherwise host
	38	* may not detect soft-disconnection.
	39	*/
	40	val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
	41	val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
	42	val \|= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
	43	otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
	44	break;
	45	default:
	46	dev_dbg(dev, "unknown ci13xxx_udc event\n");
	47	break;
	48	}
	49	}
	50
	51	static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
	52	.name = "ci13xxx_msm",
	53	.flags = CI13XXX_REGS_SHARED \|
	54	CI13XXX_REQUIRE_TRANSCEIVER \|
	55	CI13XXX_PULLUP_ON_VBUS \|
	56	CI13XXX_DISABLE_STREAMING,
	57
	58	.notify_event = ci13xxx_msm_notify_event,
	59	};
	60
	61	static int ci13xxx_msm_probe(struct platform_device *pdev)
	62	{
	63	struct resource *res;
	64	void __iomem *regs;
	65	int irq;
	66	int ret;
	67
	68	dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
	69
	70	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	71	if (!res) {
	72	dev_err(&pdev->dev, "failed to get platform resource mem\n");
	73	return -ENXIO;
	74	}
75
76	regs = ioremap(res->start, resource_size(res));
77	if (!regs) {
78	dev_err(&pdev->dev, "ioremap failed\n");
79	return -ENOMEM;
80	}
81
82	ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs);
83	if (ret < 0) {
84	dev_err(&pdev->dev, "udc_probe failed\n");
85	goto iounmap;
86	}
87
88	irq = platform_get_irq(pdev, 0);
89	if (irq < 0) {
90	dev_err(&pdev->dev, "IRQ not found\n");
91	ret = -ENXIO;
92	goto udc_remove;
93	}
94
95	ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev);
96	if (ret < 0) {
97	dev_err(&pdev->dev, "request_irq failed\n");
98	goto udc_remove;
99	}
100
2d0cdcc5 PK	101	pm_runtime_no_callbacks(&pdev->dev);
	102	pm_runtime_enable(&pdev->dev);
	103
33f82f38 PK	104	return 0;
	105
	106	udc_remove:
	107	udc_remove();
	108	iounmap:
	109	iounmap(regs);
	110
	111	return ret;
	112	}
	113
	114	static struct platform_driver ci13xxx_msm_driver = {
	115	.probe = ci13xxx_msm_probe,
	116	.driver = { .name = "msm_hsusb", },
	117	};
86081d7b	118	MODULE_ALIAS("platform:msm_hsusb");
33f82f38 PK	119
	120	static int __init ci13xxx_msm_init(void)
	121	{
	122	return platform_driver_register(&ci13xxx_msm_driver);
	123	}
	124	module_init(ci13xxx_msm_init);