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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* linux/arch/arm/mach-omap2/usb-musb.c
*
* This file will contain the board specific details for the
* MENTOR USB OTG controller on OMAP3430
*
* Copyright (C) 2007-2008 Texas Instruments
* Copyright (C) 2008 Nokia Corporation
* Author: Vikram Pandita
*
* Generalization by:
* Felipe Balbi <felipe.balbi@nokia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/usb/musb.h>
#include <linux/pm_runtime.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <plat/mux.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
#include <plat/omap_hwmod.h>
#ifdef CONFIG_USB_MUSB_SOC
static const char name[] = "musb_hdrc";
#define MAX_OMAP_MUSB_HWMOD_NAME_LEN 16
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.num_eps = 16,
.ram_bits = 12,
};
static struct musb_hdrc_platform_data musb_plat = {
#ifdef CONFIG_USB_MUSB_OTG
.mode = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
.mode = MUSB_HOST,
#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
.mode = MUSB_PERIPHERAL,
#endif
/* .clock is set dynamically */
.config = &musb_config,
/* REVISIT charge pump on TWL4030 can supply up to
* 100 mA ... but this value is board-specific, like
* "mode", and should be passed to usb_musb_init().
*/
.power = 50, /* up to 100 mA */
};
static u64 musb_dmamask = DMA_BIT_MASK(32);
static int usb_idle_hwmod(struct omap_device *od)
{
struct omap_hwmod *oh = *od->hwmods;
if (irqs_disabled())
_omap_hwmod_idle(oh);
else
omap_device_idle_hwmods(od);
return 0;
}
static int usb_enable_hwmod(struct omap_device *od)
{
struct omap_hwmod *oh = *od->hwmods;
if (irqs_disabled())
_omap_hwmod_enable(oh);
else
omap_device_enable_hwmods(od);
return 0;
}
static struct omap_device_pm_latency omap_musb_latency[] = {
{
.deactivate_func = usb_idle_hwmod,
.activate_func = usb_enable_hwmod,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
void __init usb_musb_init(struct omap_musb_board_data *board_data)
{
char oh_name[MAX_OMAP_MUSB_HWMOD_NAME_LEN];
struct omap_hwmod *oh;
struct omap_device *od;
struct platform_device *pdev;
struct device *dev;
int l, bus_id = -1;
struct musb_hdrc_platform_data *pdata;
l = snprintf(oh_name, MAX_OMAP_MUSB_HWMOD_NAME_LEN,
"usb_otg_hs");
WARN(l >= MAX_OMAP_MUSB_HWMOD_NAME_LEN,
"String buffer overflow in MUSB device setup\n");
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
} else {
/*
* REVISIT: This line can be removed once all the platforms
* using musb_core.c have been converted to use use clkdev.
*/
musb_plat.clock = "ick";
musb_plat.board_data = board_data;
musb_plat.power = board_data->power >> 1;
musb_plat.mode = board_data->mode;
musb_plat.device_enable = omap_device_enable;
musb_plat.device_idle = omap_device_idle;
musb_plat.enable_wakeup = omap_device_enable_wakeup;
musb_plat.disable_wakeup = omap_device_disable_wakeup;
/*
* Errata 1.166 idle_req/ack is broken in omap3430
* workaround is to disable the autodile bit for omap3430.
*/
if (cpu_is_omap3430())
oh->flags |= HWMOD_NO_OCP_AUTOIDLE;
musb_plat.oh = oh;
pdata = &musb_plat;
od = omap_device_build(name, bus_id, oh, pdata,
sizeof(struct musb_hdrc_platform_data),
omap_musb_latency,
ARRAY_SIZE(omap_musb_latency), false);
if (IS_ERR(od)) {
pr_err("Could not build omap_device for %s %s\n",
name, oh_name);
} else {
pdev = &od->pdev;
dev = &pdev->dev;
get_device(dev);
dev->dma_mask = &musb_dmamask;
dev->coherent_dma_mask = musb_dmamask;
put_device(dev);
}
}
}
void musb_context_save_restore(enum musb_state state)
{
struct omap_hwmod *oh = omap_hwmod_lookup("usb_otg_hs");
struct omap_device *od = oh->od;
struct platform_device *pdev = &od->pdev;
struct device *dev = &pdev->dev;
struct device_driver *drv = dev->driver;
if (drv) {
#ifdef CONFIG_PM_RUNTIME
struct musb_hdrc_platform_data *pdata = dev->platform_data;
const struct dev_pm_ops *pm = drv->pm;
switch (state) {
case save_context:
/*Save the context, set the sysconfig setting to
* force standby force idle during idle and disable
* the clock.
*/
oh->flags |= HWMOD_SWSUP_SIDLE
| HWMOD_SWSUP_MSTANDBY;
pm->suspend(dev);
pdata->device_idle(pdev);
break;
case disable_clk:
/* set the sysconfig setting to force standby,
* force idle during idle and disable
* the clock.
*/
oh->flags |= HWMOD_SWSUP_SIDLE
| HWMOD_SWSUP_MSTANDBY;
pdata->device_idle(pdev);
break;
case restore_context:
/* Enable the clock, set the sysconfig setting back
* to smart idle and smart stndby after wakeup.
*restore the context.
*/
oh->flags &= ~(HWMOD_SWSUP_SIDLE
| HWMOD_SWSUP_MSTANDBY);
pdata->device_enable(pdev);
pm->resume_noirq(dev);
break;
case enable_clk:
/* set the sysconfig setting back to smart idle and
* smart stndby after wakeup and enable the clock
*/
oh->flags &= ~(HWMOD_SWSUP_SIDLE
| HWMOD_SWSUP_MSTANDBY);
pdata->device_enable(pdev);
break;
default:
break;
}
#endif
}
}
#else
void __init usb_musb_init(struct omap_musb_board_data *board_data)
{
}
#endif /* CONFIG_USB_MUSB_SOC */
|
