[mirror_ubuntu-jammy-kernel.git] / drivers / usb / phy / phy-am335x.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, NULL);
	if (ret)
		return ret;

	ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
	if (ret)
		return ret;
	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;
}

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;
}

#ifdef CONFIG_PM_RUNTIME

static int am335x_phy_runtime_suspend(struct device *dev)
{
	struct platform_device	*pdev = to_platform_device(dev);
	struct am335x_phy *am_phy = platform_get_drvdata(pdev);

	if (device_may_wakeup(dev))
		phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true);
	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false);
	return 0;
}

static int am335x_phy_runtime_resume(struct device *dev)
{
	struct platform_device	*pdev = to_platform_device(dev);
	struct am335x_phy	*am_phy = platform_get_drvdata(pdev);

	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true);
	if (device_may_wakeup(dev))
		phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false);
	return 0;
}

static const struct dev_pm_ops am335x_pm_ops = {
	SET_RUNTIME_PM_OPS(am335x_phy_runtime_suspend,
			am335x_phy_runtime_resume, NULL)
};

#define DEV_PM_OPS	(&am335x_pm_ops)
#else
#define DEV_PM_OPS	NULL
#endif

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,
		.pm = DEV_PM_OPS,
		.of_match_table = am335x_phy_ids,
	},
};

module_platform_driver(am335x_phy_driver);
MODULE_LICENSE("GPL v2");
Commit	Line	Data
3bb869c8 SAS	1	#include <linux/module.h>
	2	#include <linux/platform_device.h>
	3	#include <linux/dma-mapping.h>
	4	#include <linux/usb/otg.h>
	5	#include <linux/usb/usb_phy_gen_xceiv.h>
	6	#include <linux/slab.h>
	7	#include <linux/clk.h>
	8	#include <linux/regulator/consumer.h>
	9	#include <linux/of.h>
	10	#include <linux/of_address.h>
	11
	12	#include "am35x-phy-control.h"
	13	#include "phy-generic.h"
	14
	15	struct am335x_phy {
	16	struct usb_phy_gen_xceiv usb_phy_gen;
	17	struct phy_control *phy_ctrl;
	18	int id;
	19	};
	20
	21	static int am335x_init(struct usb_phy *phy)
	22	{
	23	struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
	24
	25	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true);
	26	return 0;
	27	}
	28
	29	static void am335x_shutdown(struct usb_phy *phy)
	30	{
	31	struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
	32
	33	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false);
	34	}
	35
	36	static int am335x_phy_probe(struct platform_device *pdev)
	37	{
	38	struct am335x_phy *am_phy;
	39	struct device *dev = &pdev->dev;
	40	int ret;
	41
	42	am_phy = devm_kzalloc(dev, sizeof(*am_phy), GFP_KERNEL);
	43	if (!am_phy)
	44	return -ENOMEM;
	45
	46	am_phy->phy_ctrl = am335x_get_phy_control(dev);
	47	if (!am_phy->phy_ctrl)
	48	return -EPROBE_DEFER;
	49	am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy");
	50	if (am_phy->id < 0) {
	51	dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id);
	52	return am_phy->id;
	53	}
	54
af9f51c5	55	ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen, NULL);
3bb869c8 SAS	56	if (ret)
	57	return ret;
	58
	59	ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
	60	if (ret)
4d175f34	61	return ret;
3bb869c8 SAS	62	am_phy->usb_phy_gen.phy.init = am335x_init;
	63	am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;
	64
	65	platform_set_drvdata(pdev, am_phy);
4d175f34	66
3bb869c8	67	return 0;
3bb869c8 SAS	68	}
	69
	70	static int am335x_phy_remove(struct platform_device *pdev)
	71	{
	72	struct am335x_phy *am_phy = platform_get_drvdata(pdev);
	73
	74	usb_remove_phy(&am_phy->usb_phy_gen.phy);
	75	return 0;
	76	}
	77
a1222639 SAS	78	#ifdef CONFIG_PM_RUNTIME
	79
	80	static int am335x_phy_runtime_suspend(struct device *dev)
	81	{
	82	struct platform_device *pdev = to_platform_device(dev);
	83	struct am335x_phy *am_phy = platform_get_drvdata(pdev);
	84
	85	if (device_may_wakeup(dev))
	86	phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true);
	87	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false);
	88	return 0;
	89	}
	90
	91	static int am335x_phy_runtime_resume(struct device *dev)
	92	{
	93	struct platform_device *pdev = to_platform_device(dev);
	94	struct am335x_phy *am_phy = platform_get_drvdata(pdev);
	95
	96	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true);
	97	if (device_may_wakeup(dev))
	98	phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false);
	99	return 0;
	100	}
	101
	102	static const struct dev_pm_ops am335x_pm_ops = {
	103	SET_RUNTIME_PM_OPS(am335x_phy_runtime_suspend,
	104	am335x_phy_runtime_resume, NULL)
	105	};
	106
	107	#define DEV_PM_OPS (&am335x_pm_ops)
	108	#else
	109	#define DEV_PM_OPS NULL
	110	#endif
	111
3bb869c8 SAS	112	static const struct of_device_id am335x_phy_ids[] = {
	113	{ .compatible = "ti,am335x-usb-phy" },
	114	{ }
	115	};
	116	MODULE_DEVICE_TABLE(of, am335x_phy_ids);
	117
	118	static struct platform_driver am335x_phy_driver = {
	119	.probe = am335x_phy_probe,
	120	.remove = am335x_phy_remove,
	121	.driver = {
	122	.name = "am335x-phy-driver",
	123	.owner = THIS_MODULE,
a1222639	124	.pm = DEV_PM_OPS,
b99fffca	125	.of_match_table = am335x_phy_ids,
3bb869c8 SAS	126	},
	127	};
	128
	129	module_platform_driver(am335x_phy_driver);
	130	MODULE_LICENSE("GPL v2");