1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
#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");
|
