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sandbox: convert to common time functions
[karo-tx-uboot.git] / drivers / usb / gadget / g_dnl.c
1 /*
2  * g_dnl.c -- USB Downloader Gadget
3  *
4  * Copyright (C) 2012 Samsung Electronics
5  * Lukasz Majewski  <l.majewski@samsung.com>
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9
10 #include <common.h>
11 #include <malloc.h>
12
13 #include <mmc.h>
14 #include <part.h>
15
16 #include <g_dnl.h>
17 #include <usb_mass_storage.h>
18 #include <dfu.h>
19 #include <thor.h>
20
21 #include "gadget_chips.h"
22 #include "composite.c"
23
24 /*
25  * One needs to define the following:
26  * CONFIG_G_DNL_VENDOR_NUM
27  * CONFIG_G_DNL_PRODUCT_NUM
28  * CONFIG_G_DNL_MANUFACTURER
29  * at e.g. ./include/configs/<board>.h
30  */
31
32 #define STRING_MANUFACTURER 25
33 #define STRING_PRODUCT 2
34 /* Index of String Descriptor describing this configuration */
35 #define STRING_USBDOWN 2
36 /* Number of supported configurations */
37 #define CONFIGURATION_NUMBER 1
38
39 #define DRIVER_VERSION          "usb_dnl 2.0"
40
41 static const char shortname[] = "usb_dnl_";
42 static const char product[] = "USB download gadget";
43 static const char manufacturer[] = CONFIG_G_DNL_MANUFACTURER;
44
45 static struct usb_device_descriptor device_desc = {
46         .bLength = sizeof device_desc,
47         .bDescriptorType = USB_DT_DEVICE,
48
49         .bcdUSB = __constant_cpu_to_le16(0x0200),
50         .bDeviceClass = USB_CLASS_COMM,
51         .bDeviceSubClass = 0x02, /*0x02:CDC-modem , 0x00:CDC-serial*/
52
53         .idVendor = __constant_cpu_to_le16(CONFIG_G_DNL_VENDOR_NUM),
54         .idProduct = __constant_cpu_to_le16(CONFIG_G_DNL_PRODUCT_NUM),
55         .iProduct = STRING_PRODUCT,
56         .bNumConfigurations = 1,
57 };
58
59 /*
60  * static strings, in UTF-8
61  * IDs for those strings are assigned dynamically at g_dnl_bind()
62  */
63 static struct usb_string g_dnl_string_defs[] = {
64         {.s = manufacturer},
65         {.s = product},
66         { }             /* end of list */
67 };
68
69 static struct usb_gadget_strings g_dnl_string_tab = {
70         .language = 0x0409, /* en-us */
71         .strings = g_dnl_string_defs,
72 };
73
74 static struct usb_gadget_strings *g_dnl_composite_strings[] = {
75         &g_dnl_string_tab,
76         NULL,
77 };
78
79 static int g_dnl_unbind(struct usb_composite_dev *cdev)
80 {
81         struct usb_gadget *gadget = cdev->gadget;
82
83         free(cdev->config);
84         cdev->config = NULL;
85         debug("%s: calling usb_gadget_disconnect for "
86                         "controller '%s'\n", shortname, gadget->name);
87         usb_gadget_disconnect(gadget);
88
89         return 0;
90 }
91
92 static int g_dnl_do_config(struct usb_configuration *c)
93 {
94         const char *s = c->cdev->driver->name;
95         int ret = -1;
96
97         debug("%s: configuration: 0x%p composite dev: 0x%p\n",
98               __func__, c, c->cdev);
99
100         printf("GADGET DRIVER: %s\n", s);
101         if (!strcmp(s, "usb_dnl_dfu"))
102                 ret = dfu_add(c);
103         else if (!strcmp(s, "usb_dnl_ums"))
104                 ret = fsg_add(c);
105         else if (!strcmp(s, "usb_dnl_thor"))
106                 ret = thor_add(c);
107
108         return ret;
109 }
110
111 static int g_dnl_config_register(struct usb_composite_dev *cdev)
112 {
113         struct usb_configuration *config;
114         const char *name = "usb_dnload";
115
116         config = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*config));
117         if (!config)
118                 return -ENOMEM;
119
120         memset(config, 0, sizeof(*config));
121
122         config->label = name;
123         config->bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER;
124         config->bConfigurationValue = CONFIGURATION_NUMBER;
125         config->iConfiguration = STRING_USBDOWN;
126         config->bind = g_dnl_do_config;
127
128         return usb_add_config(cdev, config);
129 }
130
131 __weak
132 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
133 {
134         return 0;
135 }
136
137 static int g_dnl_bind(struct usb_composite_dev *cdev)
138 {
139         struct usb_gadget *gadget = cdev->gadget;
140         int id, ret;
141         int gcnum;
142
143         debug("%s: gadget: 0x%p cdev: 0x%p\n", __func__, gadget, cdev);
144
145         id = usb_string_id(cdev);
146
147         if (id < 0)
148                 return id;
149         g_dnl_string_defs[0].id = id;
150         device_desc.iManufacturer = id;
151
152         id = usb_string_id(cdev);
153         if (id < 0)
154                 return id;
155
156         g_dnl_string_defs[1].id = id;
157         device_desc.iProduct = id;
158
159         g_dnl_bind_fixup(&device_desc, cdev->driver->name);
160         ret = g_dnl_config_register(cdev);
161         if (ret)
162                 goto error;
163
164         gcnum = usb_gadget_controller_number(gadget);
165
166         debug("gcnum: %d\n", gcnum);
167         if (gcnum >= 0)
168                 device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
169         else {
170                 debug("%s: controller '%s' not recognized\n",
171                         shortname, gadget->name);
172                 device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
173         }
174
175         debug("%s: calling usb_gadget_connect for "
176                         "controller '%s'\n", shortname, gadget->name);
177         usb_gadget_connect(gadget);
178
179         return 0;
180
181  error:
182         g_dnl_unbind(cdev);
183         return -ENOMEM;
184 }
185
186 static struct usb_composite_driver g_dnl_driver = {
187         .name = NULL,
188         .dev = &device_desc,
189         .strings = g_dnl_composite_strings,
190
191         .bind = g_dnl_bind,
192         .unbind = g_dnl_unbind,
193 };
194
195 int g_dnl_register(const char *type)
196 {
197         /* The largest function name is 4 */
198         static char name[sizeof(shortname) + 4];
199         int ret;
200
201         if (!strcmp(type, "dfu")) {
202                 strcpy(name, shortname);
203                 strcat(name, type);
204         } else if (!strcmp(type, "ums")) {
205                 strcpy(name, shortname);
206                 strcat(name, type);
207         } else if (!strcmp(type, "thor")) {
208                 strcpy(name, shortname);
209                 strcat(name, type);
210         } else {
211                 printf("%s: unknown command: %s\n", __func__, type);
212                 return -EINVAL;
213         }
214
215         g_dnl_driver.name = name;
216
217         debug("%s: g_dnl_driver.name: %s\n", __func__, g_dnl_driver.name);
218         ret = usb_composite_register(&g_dnl_driver);
219
220         if (ret) {
221                 printf("%s: failed!, error: %d\n", __func__, ret);
222                 return ret;
223         }
224
225         return 0;
226 }
227
228 void g_dnl_unregister(void)
229 {
230         usb_composite_unregister(&g_dnl_driver);
231 }