summaryrefslogtreecommitdiffstats
path: root/drivers/usb/common/fsl-dt-fixup.c
blob: 46488dcdcdf54b064763e05fd090f9d0e201110c (plain)
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
/*
 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
 *
 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
 *
 * Author: Tor Krill tor@excito.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <usb.h>
#include <asm/io.h>
#include <hwconfig.h>
#include <fsl_usb.h>
#include <fdt_support.h>

#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
#endif

static const char * const compat_usb_fsl[] = {
	"fsl-usb2-mph",
	"fsl-usb2-dr",
	"snps,dwc3",
	NULL
};

static const char *fdt_usb_get_node_type(void *blob, int start_offset,
					 int *node_offset)
{
	const char *node_type = NULL;
	int i;

	for (i = 0; compat_usb_fsl[i]; i++) {
		*node_offset = fdt_node_offset_by_compatible
					(blob, start_offset,
					 compat_usb_fsl[i]);
		if (*node_offset >= 0) {
			node_type = compat_usb_fsl[i];
			break;
		}
	}

	return node_type;
}

static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
				       const char *phy_type, int start_offset)
{
	const char *prop_mode = "dr_mode";
	const char *prop_type = "phy_type";
	const char *node_type = NULL;
	int node_offset;
	int err;

	node_type = fdt_usb_get_node_type(blob, start_offset, &node_offset);
	if (!node_type)
		return -1;

	if (mode) {
		err = fdt_setprop(blob, node_offset, prop_mode, mode,
				  strlen(mode) + 1);
		if (err < 0)
			printf("WARNING: could not set %s for %s: %s.\n",
			       prop_mode, node_type, fdt_strerror(err));
	}

	if (phy_type) {
		err = fdt_setprop(blob, node_offset, prop_type, phy_type,
				  strlen(phy_type) + 1);
		if (err < 0)
			printf("WARNING: could not set %s for %s: %s.\n",
			       prop_type, node_type, fdt_strerror(err));
	}

	return node_offset;
}

static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
				 int start_offset)
{
	int node_offset, err;
	const char *node_type = NULL;

	node_type = fdt_usb_get_node_type(blob, start_offset, &node_offset);
	if (!node_type)
		return -1;

	err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0);
	if (err < 0) {
		printf("ERROR: could not set %s for %s: %s.\n",
		       prop_erratum, node_type, fdt_strerror(err));
	}

	return node_offset;
}

void fdt_fixup_dr_usb(void *blob, bd_t *bd)
{
	static const char * const modes[] = { "host", "peripheral", "otg" };
	static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
	int usb_erratum_a006261_off = -1;
	int usb_erratum_a007075_off = -1;
	int usb_erratum_a007792_off = -1;
	int usb_erratum_a005697_off = -1;
	int usb_mode_off = -1;
	int usb_phy_off = -1;
	char str[5];
	int i, j;

	for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
		const char *dr_mode_type = NULL;
		const char *dr_phy_type = NULL;
		int mode_idx = -1, phy_idx = -1;

		snprintf(str, 5, "%s%d", "usb", i);
		if (hwconfig(str)) {
			for (j = 0; j < ARRAY_SIZE(modes); j++) {
				if (hwconfig_subarg_cmp(str, "dr_mode",
							modes[j])) {
					mode_idx = j;
					break;
				}
			}

			for (j = 0; j < ARRAY_SIZE(phys); j++) {
				if (hwconfig_subarg_cmp(str, "phy_type",
							phys[j])) {
					phy_idx = j;
					break;
				}
			}

			if (mode_idx < 0 && phy_idx < 0) {
				printf("WARNING: invalid phy or mode\n");
				return;
			}

			if (mode_idx > -1)
				dr_mode_type = modes[mode_idx];

			if (phy_idx > -1)
				dr_phy_type = phys[phy_idx];
		}

		if (has_dual_phy())
			dr_phy_type = phys[2];

		usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
							   dr_mode_type, NULL,
							   usb_mode_off);

		if (usb_mode_off < 0)
			return;

		usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
							  NULL, dr_phy_type,
							  usb_phy_off);

		if (usb_phy_off < 0)
			return;

		if (has_erratum_a006261()) {
			usb_erratum_a006261_off =  fdt_fixup_usb_erratum
						   (blob,
						    "fsl,usb-erratum-a006261",
						    usb_erratum_a006261_off);
			if (usb_erratum_a006261_off < 0)
				return;
		}

		if (has_erratum_a007075()) {
			usb_erratum_a007075_off =  fdt_fixup_usb_erratum
						   (blob,
						    "fsl,usb-erratum-a007075",
						    usb_erratum_a007075_off);
			if (usb_erratum_a007075_off < 0)
				return;
		}

		if (has_erratum_a007792()) {
			usb_erratum_a007792_off =  fdt_fixup_usb_erratum
						   (blob,
						    "fsl,usb-erratum-a007792",
						    usb_erratum_a007792_off);
			if (usb_erratum_a007792_off < 0)
				return;
		}
		if (has_erratum_a005697()) {
			usb_erratum_a005697_off =  fdt_fixup_usb_erratum
						   (blob,
						    "fsl,usb-erratum-a005697",
						    usb_erratum_a005697_off);
			if (usb_erratum_a005697_off < 0)
				return;
		}
	}
}
OpenPOWER on IntegriCloud