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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Copyright (C) 2005-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <mach/arc_otg.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include "usb.h"
#include "iomux.h"
#include "mx51_pins.h"
/*
* USB Host1 HS port
*/
static int gpio_usbh1_active(void)
{
/* Set USBH1_STP to GPIO and toggle it */
mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_GPIO |
IOMUX_CONFIG_SION);
gpio_request(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), "usbh1_stp");
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), 0);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), 1);
/* Signal only used on MX51-3DS for reset to PHY.*/
if (machine_is_mx51_3ds()) {
mxc_request_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_ALT1);
mxc_iomux_set_pad(MX51_PIN_EIM_D17, PAD_CTL_DRV_HIGH |
PAD_CTL_HYS_NONE | PAD_CTL_PUE_KEEPER |
PAD_CTL_100K_PU | PAD_CTL_ODE_OPENDRAIN_NONE |
PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
gpio_request(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), "eim_d17");
gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), 0);
gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), 1);
}
msleep(100);
return 0;
}
static void gpio_usbh1_inactive(void)
{
/* Signal only used on MX51-3DS for reset to PHY.*/
if (machine_is_mx51_3ds()) {
gpio_free(IOMUX_TO_GPIO(MX51_PIN_EIM_D17));
mxc_free_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_GPIO);
}
mxc_free_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_GPIO);
gpio_free(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP));
}
static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
{
if (enable)
USBCTRL |= UCTRL_H1WIE;
else
USBCTRL &= ~UCTRL_H1WIE;
}
static void usbotg_clock_gate(bool on)
{
struct clk *usboh3_clk = clk_get(NULL, "usboh3_clk");
struct clk *usb_ahb_clk = clk_get(NULL, "usb_ahb_clk");
if (on) {
clk_enable(usb_ahb_clk);
clk_enable(usboh3_clk);
} else {
clk_disable(usboh3_clk);
clk_disable(usb_ahb_clk);
}
clk_put(usboh3_clk);
clk_put(usb_ahb_clk);
}
static int fsl_usb_host_init_ext(struct platform_device *pdev)
{
int ret;
struct clk *usb_clk;
if (cpu_is_mx53()) {
usb_clk = clk_get(NULL, "usboh3_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(&pdev->dev, "usb_phy2_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
/*derive clock from oscillator */
usb_clk = clk_get(NULL, "usb_utmi_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
}
ret = fsl_usb_host_init(pdev);
if (ret)
return ret;
if (cpu_is_mx51()) {
/* setback USBH1_STP to be function */
mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_ALT0);
mxc_iomux_set_pad(MX51_PIN_USBH1_STP, PAD_CTL_SRE_FAST |
PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE |
PAD_CTL_PUE_KEEPER | PAD_CTL_PKE_ENABLE |
PAD_CTL_HYS_ENABLE | PAD_CTL_DDR_INPUT_CMOS |
PAD_CTL_DRV_VOT_LOW);
gpio_free(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP));
}
/* disable remote wakeup irq */
USBCTRL &= ~UCTRL_H1WIE;
return 0;
}
static void fsl_usb_host_uninit_ext(struct fsl_usb2_platform_data *pdata)
{
struct clk *usb_clk;
if (cpu_is_mx53()) {
usb_clk = clk_get(NULL, "usboh3_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(&pdata->pdev->dev, "usb_phy2_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
}
fsl_usb_host_uninit(pdata);
}
static struct fsl_usb2_platform_data usbh1_config = {
.name = "Host 1",
.platform_init = fsl_usb_host_init_ext,
.platform_uninit = fsl_usb_host_uninit_ext,
.operating_mode = FSL_USB2_MPH_HOST,
.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
.power_budget = 500, /* 500 mA max power */
.wake_up_enable = _wake_up_enable,
.usb_clock_for_pm = usbotg_clock_gate,
.transceiver = "utmi",
};
void __init mx5_usbh1_init(void)
{
if (cpu_is_mx51()) {
usbh1_config.phy_mode = FSL_USB2_PHY_ULPI;
usbh1_config.transceiver = "isp1504";
usbh1_config.gpio_usb_active = gpio_usbh1_active;
usbh1_config.gpio_usb_inactive = gpio_usbh1_inactive;
}
mxc_register_device(&mxc_usbh1_device, &usbh1_config);
}
|
