131 lines
3.2 KiB
C
131 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2014 Marvell Technology Group Ltd.
|
|
*
|
|
* Antoine Tenart <antoine.tenart@free-electrons.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/phy/phy.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/usb/chipidea.h>
|
|
#include <linux/usb/hcd.h>
|
|
#include <linux/usb/ulpi.h>
|
|
|
|
#include "ci.h"
|
|
|
|
struct ci_hdrc_usb2_priv {
|
|
struct platform_device *ci_pdev;
|
|
struct clk *clk;
|
|
};
|
|
|
|
static const struct ci_hdrc_platform_data ci_default_pdata = {
|
|
.capoffset = DEF_CAPOFFSET,
|
|
.flags = CI_HDRC_DISABLE_STREAMING,
|
|
};
|
|
|
|
static struct ci_hdrc_platform_data ci_zynq_pdata = {
|
|
.capoffset = DEF_CAPOFFSET,
|
|
};
|
|
|
|
static const struct of_device_id ci_hdrc_usb2_of_match[] = {
|
|
{ .compatible = "chipidea,usb2"},
|
|
{ .compatible = "xlnx,zynq-usb-2.20a", .data = &ci_zynq_pdata},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ci_hdrc_usb2_of_match);
|
|
|
|
static int ci_hdrc_usb2_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct ci_hdrc_usb2_priv *priv;
|
|
struct ci_hdrc_platform_data *ci_pdata = dev_get_platdata(dev);
|
|
int ret;
|
|
const struct of_device_id *match;
|
|
|
|
if (!ci_pdata) {
|
|
ci_pdata = devm_kmalloc(dev, sizeof(*ci_pdata), GFP_KERNEL);
|
|
*ci_pdata = ci_default_pdata; /* struct copy */
|
|
}
|
|
|
|
match = of_match_device(ci_hdrc_usb2_of_match, &pdev->dev);
|
|
if (match && match->data) {
|
|
/* struct copy */
|
|
*ci_pdata = *(struct ci_hdrc_platform_data *)match->data;
|
|
}
|
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->clk = devm_clk_get(dev, NULL);
|
|
if (!IS_ERR(priv->clk)) {
|
|
ret = clk_prepare_enable(priv->clk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable the clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
goto clk_err;
|
|
|
|
ci_pdata->name = dev_name(dev);
|
|
|
|
priv->ci_pdev = ci_hdrc_add_device(dev, pdev->resource,
|
|
pdev->num_resources, ci_pdata);
|
|
if (IS_ERR(priv->ci_pdev)) {
|
|
ret = PTR_ERR(priv->ci_pdev);
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(dev,
|
|
"failed to register ci_hdrc platform device: %d\n",
|
|
ret);
|
|
goto clk_err;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
pm_runtime_no_callbacks(dev);
|
|
pm_runtime_enable(dev);
|
|
|
|
return 0;
|
|
|
|
clk_err:
|
|
if (!IS_ERR(priv->clk))
|
|
clk_disable_unprepare(priv->clk);
|
|
return ret;
|
|
}
|
|
|
|
static int ci_hdrc_usb2_remove(struct platform_device *pdev)
|
|
{
|
|
struct ci_hdrc_usb2_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
ci_hdrc_remove_device(priv->ci_pdev);
|
|
clk_disable_unprepare(priv->clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ci_hdrc_usb2_driver = {
|
|
.probe = ci_hdrc_usb2_probe,
|
|
.remove = ci_hdrc_usb2_remove,
|
|
.driver = {
|
|
.name = "chipidea-usb2",
|
|
.of_match_table = of_match_ptr(ci_hdrc_usb2_of_match),
|
|
},
|
|
};
|
|
module_platform_driver(ci_hdrc_usb2_driver);
|
|
|
|
MODULE_DESCRIPTION("ChipIdea HDRC USB2 binding for ci13xxx");
|
|
MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
|
|
MODULE_LICENSE("GPL");
|