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usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs 

The USB controller in TI-NSPIRE calculators (LSI Zevio SoC) are based off either
Freescale's USB OTG controller or the USB controller found in the IMX233, both
of which are Chipidea compatible.

This patch adds a device tree binding for the controller.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniel Tang 2014-03-11 13:47:39 +08:00 committed by Greg Kroah-Hartman
parent c844d6c884
commit 7b92e1ddb1
2 changed files with 73 additions and 0 deletions
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1
drivers/usb/chipidea/Makefile
View File

@ -10,6 +10,7 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o
# Glue/Bridge layers go here
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o
# PCI doesn't provide stubs, need to check
ifneq ($(CONFIG_PCI),)

72
drivers/usb/chipidea/ci_hdrc_zevio.c Normal file
View File

@ -0,0 +1,72 @@
/*
* Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* Based off drivers/usb/chipidea/ci_hdrc_msm.c
*
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/usb/gadget.h>
#include <linux/usb/chipidea.h>
#include "ci.h"
static struct ci_hdrc_platform_data ci_hdrc_zevio_platdata = {
.name = "ci_hdrc_zevio",
.flags = CI_HDRC_REGS_SHARED,
.capoffset = DEF_CAPOFFSET,
};
static int ci_hdrc_zevio_probe(struct platform_device *pdev)
{
struct platform_device *ci_pdev;
dev_dbg(&pdev->dev, "ci_hdrc_zevio_probe\n");
ci_pdev = ci_hdrc_add_device(&pdev->dev,
pdev->resource, pdev->num_resources,
&ci_hdrc_zevio_platdata);
if (IS_ERR(ci_pdev)) {
dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
return PTR_ERR(ci_pdev);
}
platform_set_drvdata(pdev, ci_pdev);
return 0;
}
static int ci_hdrc_zevio_remove(struct platform_device *pdev)
{
struct platform_device *ci_pdev = platform_get_drvdata(pdev);
ci_hdrc_remove_device(ci_pdev);
return 0;
}
static const struct of_device_id ci_hdrc_zevio_dt_ids[] = {
{ .compatible = "lsi,zevio-usb", },
{ /* sentinel */ }
};
static struct platform_driver ci_hdrc_zevio_driver = {
.probe = ci_hdrc_zevio_probe,
.remove = ci_hdrc_zevio_remove,
.driver = {
.name = "zevio_usb",
.owner = THIS_MODULE,
.of_match_table = ci_hdrc_zevio_dt_ids,
},
};
MODULE_DEVICE_TABLE(of, ci_hdrc_zevio_dt_ids);
module_platform_driver(ci_hdrc_zevio_driver);
MODULE_LICENSE("GPL v2");