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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2005-2007 by Texas Instruments
* Some code has been taken from tusb6010.c
* Copyrights for that are attributable to:
* Copyright (C) 2006 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
*
* This file is part of the Inventra Controller Driver for Linux.
*/
#include <dm.h>
#include <log.h>
#include <serial.h>
#include <dm/device-internal.h>
#include <dm/device_compat.h>
#include <dm/lists.h>
#include <linux/err.h>
#include <linux/printk.h>
#include <linux/usb/otg.h>
#include <asm/global_data.h>
#include <asm/omap_common.h>
#include <asm/omap_musb.h>
#include <twl4030.h>
#include <twl6030.h>
#include "linux-compat.h"
#include "musb_core.h"
#include "omap2430.h"
#include "musb_uboot.h"
static inline void omap2430_low_level_exit(struct musb *musb)
{
u32 l;
/* in any role */
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l |= ENABLEFORCE; /* enable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static inline void omap2430_low_level_init(struct musb *musb)
{
u32 l;
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l &= ~ENABLEFORCE; /* disable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static int omap2430_musb_init(struct musb *musb)
{
u32 l;
int status = 0;
unsigned long int start;
struct omap_musb_board_data *data =
(struct omap_musb_board_data *)musb->controller;
/* Reset the controller */
musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
start = get_timer(0);
while (1) {
l = musb_readl(musb->mregs, OTG_SYSCONFIG);
if ((l & SOFTRST) == 0)
break;
if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
dev_err(musb->controller, "MUSB reset is taking too long\n");
return -ENODEV;
}
}
l = musb_readl(musb->mregs, OTG_INTERFSEL);
if (data->interface_type == MUSB_INTERFACE_UTMI) {
/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
l &= ~ULPI_12PIN; /* Disable ULPI */
l |= UTMI_8BIT; /* Enable UTMI */
} else {
l |= ULPI_12PIN;
}
musb_writel(musb->mregs, OTG_INTERFSEL, l);
pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
"sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
musb_readl(musb->mregs, OTG_REVISION),
musb_readl(musb->mregs, OTG_SYSCONFIG),
musb_readl(musb->mregs, OTG_SYSSTATUS),
musb_readl(musb->mregs, OTG_INTERFSEL),
musb_readl(musb->mregs, OTG_SIMENABLE));
return 0;
err1:
return status;
}
static int omap2430_musb_enable(struct musb *musb)
{
#ifdef CONFIG_TWL4030_USB
if (twl4030_usb_ulpi_init()) {
serial_printf("ERROR: %s Could not initialize PHY\n",
__PRETTY_FUNCTION__);
}
#endif
#ifdef CONFIG_TWL6030_POWER
twl6030_usb_device_settings();
#endif
#ifdef CONFIG_OMAP44XX
u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
*usbotghs_control = USBOTGHS_CONTROL_AVALID |
USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
#endif
return 0;
}
static void omap2430_musb_disable(struct musb *musb)
{
}
static int omap2430_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
omap2430_low_level_exit(musb);
return 0;
}
const struct musb_platform_ops omap2430_ops = {
.init = omap2430_musb_init,
.exit = omap2430_musb_exit,
.enable = omap2430_musb_enable,
.disable = omap2430_musb_disable,
};
#if CONFIG_IS_ENABLED(DM_USB)
struct omap2430_musb_plat {
void *base;
void *ctrl_mod_base;
struct musb_hdrc_platform_data plat;
struct musb_hdrc_config musb_config;
struct omap_musb_board_data otg_board_data;
};
static int omap2430_musb_of_to_plat(struct udevice *dev)
{
struct omap2430_musb_plat *plat = dev_get_plat(dev);
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(dev);
plat->base = (void *)dev_read_addr_ptr(dev);
plat->musb_config.multipoint = fdtdec_get_int(fdt, node, "multipoint",
-1);
if (plat->musb_config.multipoint < 0) {
pr_err("MUSB multipoint DT entry missing\n");
return -ENOENT;
}
plat->musb_config.dyn_fifo = 1;
plat->musb_config.num_eps = fdtdec_get_int(fdt, node, "num-eps", -1);
if (plat->musb_config.num_eps < 0) {
pr_err("MUSB num-eps DT entry missing\n");
return -ENOENT;
}
plat->musb_config.ram_bits = fdtdec_get_int(fdt, node, "ram-bits", -1);
if (plat->musb_config.ram_bits < 0) {
pr_err("MUSB ram-bits DT entry missing\n");
return -ENOENT;
}
plat->plat.power = fdtdec_get_int(fdt, node, "power", -1);
if (plat->plat.power < 0) {
pr_err("MUSB power DT entry missing\n");
return -ENOENT;
}
plat->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
"interface-type",
-1);
if (plat->otg_board_data.interface_type < 0) {
pr_err("MUSB interface-type DT entry missing\n");
return -ENOENT;
}
#if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
plat->plat.mode = fdtdec_get_int(fdt, node, "mode", -1);
if (plat->plat.mode < 0) {
pr_err("MUSB mode DT entry missing\n");
return -ENOENT;
}
#else /* MUSB_OTG, it doesn't work */
#ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
plat->plat.mode = MUSB_HOST;
#else /* For that matter, MUSB_PERIPHERAL doesn't either */
plat->plat.mode = MUSB_PERIPHERAL;
#endif
#endif
plat->otg_board_data.dev = dev;
plat->plat.config = &plat->musb_config;
plat->plat.platform_ops = &omap2430_ops;
plat->plat.board_data = &plat->otg_board_data;
return 0;
}
static int omap2430_musb_probe(struct udevice *dev)
{
struct omap2430_musb_plat *plat = dev_get_plat(dev);
struct omap_musb_board_data *otg_board_data;
int ret = 0;
void *base = dev_read_addr_ptr(dev);
struct musb *musbp;
otg_board_data = &plat->otg_board_data;
if (IS_ENABLED(CONFIG_USB_MUSB_HOST)) {
struct musb_host_data *host = dev_get_priv(dev);
struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
priv->desc_before_addr = true;
host->host = musb_init_controller(&plat->plat,
(struct device *)otg_board_data,
plat->base);
if (!host->host)
return -EIO;
return musb_lowlevel_init(host);
} else if (CONFIG_IS_ENABLED(DM_USB_GADGET)) {
struct musb_host_data *host = dev_get_priv(dev);
host->host = musb_init_controller(&plat->plat,
(struct device *)otg_board_data,
plat->base);
if (!host->host)
return -EIO;
return usb_add_gadget_udc((struct device *)otg_board_data, &host->host->g);
}
musbp = musb_register(&plat->plat, (struct device *)otg_board_data,
plat->base);
if (IS_ERR_OR_NULL(musbp))
return -EINVAL;
return 0;
}
static int omap2430_musb_remove(struct udevice *dev)
{
struct musb_host_data *host = dev_get_priv(dev);
musb_stop(host->host);
return 0;
}
#ifndef CONFIG_USB_MUSB_HOST
static int omap2340_gadget_handle_interrupts(struct udevice *dev)
{
struct musb_host_data *host = dev_get_priv(dev);
host->host->isr(0, host->host);
return 0;
}
static const struct usb_gadget_generic_ops omap2340_gadget_ops = {
.handle_interrupts = omap2340_gadget_handle_interrupts,
};
#endif
static const struct udevice_id omap2430_musb_ids[] = {
{ .compatible = "ti,omap3-musb" },
{ .compatible = "ti,omap4-musb" },
{ }
};
U_BOOT_DRIVER(omap2430_musb) = {
.name = "omap2430-musb",
#ifdef CONFIG_USB_MUSB_HOST
.id = UCLASS_USB,
#else
.id = UCLASS_USB_GADGET_GENERIC,
.ops = &omap2340_gadget_ops,
#endif
.of_match = omap2430_musb_ids,
.of_to_plat = omap2430_musb_of_to_plat,
.probe = omap2430_musb_probe,
.remove = omap2430_musb_remove,
#ifdef CONFIG_USB_MUSB_HOST
.ops = &musb_usb_ops,
#endif
.plat_auto = sizeof(struct omap2430_musb_plat),
.priv_auto = sizeof(struct musb_host_data),
};
#endif /* CONFIG_IS_ENABLED(DM_USB) */
|
