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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Qualcomm EHCI driver
*
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
*
* Based on Linux driver
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <usb.h>
#include <usb/ehci-ci.h>
#include <usb/ulpi.h>
#include <wait_bit.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <linux/compat.h>
#include "ehci.h"
struct msm_ehci_priv {
struct ehci_ctrl ctrl; /* Needed by EHCI */
struct usb_ehci *ehci; /* Start of IP core*/
struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
struct phy phy;
};
static int msm_init_after_reset(struct ehci_ctrl *dev)
{
struct msm_ehci_priv *p = container_of(dev, struct msm_ehci_priv, ctrl);
struct usb_ehci *ehci = p->ehci;
generic_phy_reset(&p->phy);
/* set mode to host controller */
writel(CM_HOST, &ehci->usbmode);
return 0;
}
static const struct ehci_ops msm_ehci_ops = {
.init_after_reset = msm_init_after_reset
};
static int ehci_usb_probe(struct udevice *dev)
{
struct msm_ehci_priv *p = dev_get_priv(dev);
struct usb_ehci *ehci = p->ehci;
struct usb_platdata *plat = dev_get_platdata(dev);
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
int ret;
hccr = (struct ehci_hccr *)((phys_addr_t)&ehci->caplength);
hcor = (struct ehci_hcor *)((phys_addr_t)hccr +
HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
ret = ehci_setup_phy(dev, &p->phy, 0);
if (ret)
return ret;
ret = board_usb_init(0, plat->init_type);
if (ret < 0)
return ret;
return ehci_register(dev, hccr, hcor, &msm_ehci_ops, 0,
plat->init_type);
}
static int ehci_usb_remove(struct udevice *dev)
{
struct msm_ehci_priv *p = dev_get_priv(dev);
struct usb_ehci *ehci = p->ehci;
int ret;
ret = ehci_deregister(dev);
if (ret)
return ret;
/* Stop controller. */
clrbits_le32(&ehci->usbcmd, CMD_RUN);
ret = ehci_shutdown_phy(dev, &p->phy);
if (ret)
return ret;
ret = board_usb_init(0, USB_INIT_DEVICE); /* Board specific hook */
if (ret < 0)
return ret;
/* Reset controller */
setbits_le32(&ehci->usbcmd, CMD_RESET);
/* Wait for reset */
if (wait_for_bit_le32(&ehci->usbcmd, CMD_RESET, false, 30, false)) {
printf("Stuck on USB reset.\n");
return -ETIMEDOUT;
}
return 0;
}
static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
{
struct msm_ehci_priv *priv = dev_get_priv(dev);
priv->ulpi_vp.port_num = 0;
priv->ehci = dev_read_addr_ptr(dev);
if (priv->ehci == (void *)FDT_ADDR_T_NONE)
return -EINVAL;
/* Warning: this will not work if viewport address is > 64 bit due to
* ULPI design.
*/
priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
return 0;
}
#if defined(CONFIG_CI_UDC)
/* Little quirk that MSM needs with Chipidea controller
* Must reinit phy after reset
*/
void ci_init_after_reset(struct ehci_ctrl *ctrl)
{
struct msm_ehci_priv *p = ctrl->priv;
generic_phy_reset(&p->phy);
}
#endif
static const struct udevice_id ehci_usb_ids[] = {
{ .compatible = "qcom,ehci-host", },
{ }
};
U_BOOT_DRIVER(usb_ehci) = {
.name = "ehci_msm",
.id = UCLASS_USB,
.of_match = ehci_usb_ids,
.ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
.probe = ehci_usb_probe,
.remove = ehci_usb_remove,
.ops = &ehci_usb_ops,
.priv_auto_alloc_size = sizeof(struct msm_ehci_priv),
.platdata_auto_alloc_size = sizeof(struct usb_platdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
|
