forked from Minki/linux
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
|
#include <linux/module.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/dma-mapping.h>
|
||
|
|
#include <linux/usb/otg.h>
|
||
|
|
#include <linux/usb/usb_phy_gen_xceiv.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/clk.h>
|
||
|
|
#include <linux/regulator/consumer.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
|
||
|
|
#include "am35x-phy-control.h"
|
||
|
|
#include "phy-generic.h"
|
||
|
|
|
||
|
|
struct am335x_phy {
|
||
|
|
struct usb_phy_gen_xceiv usb_phy_gen;
|
||
|
|
struct phy_control *phy_ctrl;
|
||
|
|
int id;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int am335x_init(struct usb_phy *phy)
|
||
|
|
{
|
||
|
|
struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
|
||
|
|
|
||
|
|
phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void am335x_shutdown(struct usb_phy *phy)
|
||
|
|
{
|
||
|
|
struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
|
||
|
|
|
||
|
|
phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int am335x_phy_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct am335x_phy *am_phy;
|
||
|
|
struct device *dev = &pdev->dev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
am_phy = devm_kzalloc(dev, sizeof(*am_phy), GFP_KERNEL);
|
||
|
|
if (!am_phy)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
am_phy->phy_ctrl = am335x_get_phy_control(dev);
|
||
|
|
if (!am_phy->phy_ctrl)
|
||
|
|
return -EPROBE_DEFER;
|
||
|
|
am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy");
|
||
|
|
if (am_phy->id < 0) {
|
||
|
|
dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id);
|
||
|
|
return am_phy->id;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen,
|
||
|
|
USB_PHY_TYPE_USB2, 0, false, false);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
|
||
|
|
if (ret)
|
||
|
|
goto err_add;
|
||
|
|
am_phy->usb_phy_gen.phy.init = am335x_init;
|
||
|
|
am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;
|
||
|
|
|
||
|
|
platform_set_drvdata(pdev, am_phy);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_add:
|
||
|
|
usb_phy_gen_cleanup_phy(&am_phy->usb_phy_gen);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int am335x_phy_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct am335x_phy *am_phy = platform_get_drvdata(pdev);
|
||
|
|
|
||
|
|
usb_remove_phy(&am_phy->usb_phy_gen.phy);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct of_device_id am335x_phy_ids[] = {
|
||
|
|
{ .compatible = "ti,am335x-usb-phy" },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, am335x_phy_ids);
|
||
|
|
|
||
|
|
static struct platform_driver am335x_phy_driver = {
|
||
|
|
.probe = am335x_phy_probe,
|
||
|
|
.remove = am335x_phy_remove,
|
||
|
|
.driver = {
|
||
|
|
.name = "am335x-phy-driver",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.of_match_table = of_match_ptr(am335x_phy_ids),
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
module_platform_driver(am335x_phy_driver);
|
||
|
|
MODULE_LICENSE("GPL v2");
|