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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <glib.h> | |
22 | #include <sigrok.h> | |
23 | #include <sigrok-internal.h> | |
24 | ||
25 | extern struct sr_global *global; | |
26 | ||
27 | GSList *devices = NULL; | |
28 | ||
29 | void sr_device_scan(void) | |
30 | { | |
31 | GSList *plugins, *l; | |
32 | struct sr_device_plugin *plugin; | |
33 | ||
34 | plugins = sr_list_hwplugins(); | |
35 | ||
36 | /* | |
37 | * Initialize all plugins first. Since the init() call may involve | |
38 | * a firmware upload and associated delay, we may as well get all | |
39 | * of these out of the way first. | |
40 | */ | |
41 | for (l = plugins; l; l = l->next) { | |
42 | plugin = l->data; | |
43 | sr_device_plugin_init(plugin); | |
44 | } | |
45 | ||
46 | } | |
47 | ||
48 | int sr_device_plugin_init(struct sr_device_plugin *plugin) | |
49 | { | |
50 | int num_devices, num_probes, i; | |
51 | ||
52 | sr_info("initializing %s plugin", plugin->name); | |
53 | num_devices = plugin->init(NULL); | |
54 | for (i = 0; i < num_devices; i++) { | |
55 | num_probes = (int)plugin->get_device_info(i, SR_DI_NUM_PROBES); | |
56 | sr_device_new(plugin, i, num_probes); | |
57 | } | |
58 | ||
59 | return num_devices; | |
60 | } | |
61 | ||
62 | void sr_device_close_all(void) | |
63 | { | |
64 | int ret; | |
65 | struct sr_device *device; | |
66 | ||
67 | while (devices) { | |
68 | device = devices->data; | |
69 | if (device->plugin && device->plugin->closedev) { | |
70 | ret = device->plugin->closedev(device->plugin_index); | |
71 | if (ret != SR_OK) { | |
72 | sr_err("dev: %s: could not close device %d", | |
73 | __func__, device->plugin_index); | |
74 | } | |
75 | } | |
76 | sr_device_destroy(device); | |
77 | } | |
78 | } | |
79 | ||
80 | GSList *sr_device_list(void) | |
81 | { | |
82 | ||
83 | if (!devices) | |
84 | sr_device_scan(); | |
85 | ||
86 | return devices; | |
87 | } | |
88 | ||
89 | struct sr_device *sr_device_new(struct sr_device_plugin *plugin, int plugin_index, | |
90 | int num_probes) | |
91 | { | |
92 | struct sr_device *device; | |
93 | int i; | |
94 | ||
95 | if (!(device = g_try_malloc0(sizeof(struct sr_device)))) { | |
96 | sr_err("dev: %s: device malloc failed", __func__); | |
97 | return NULL; | |
98 | } | |
99 | ||
100 | device->plugin = plugin; | |
101 | device->plugin_index = plugin_index; | |
102 | devices = g_slist_append(devices, device); | |
103 | ||
104 | for (i = 0; i < num_probes; i++) | |
105 | sr_device_probe_add(device, NULL); | |
106 | ||
107 | return device; | |
108 | } | |
109 | ||
110 | void sr_device_clear(struct sr_device *device) | |
111 | { | |
112 | unsigned int pnum; | |
113 | ||
114 | /* TODO: Plugin-specific clear call? */ | |
115 | ||
116 | if (!device->probes) | |
117 | return; | |
118 | ||
119 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
120 | sr_device_probe_clear(device, pnum); | |
121 | } | |
122 | ||
123 | void sr_device_destroy(struct sr_device *device) | |
124 | { | |
125 | unsigned int pnum; | |
126 | ||
127 | /* | |
128 | * TODO: Plugin-specific destroy call, need to decrease refcount | |
129 | * in plugin. | |
130 | */ | |
131 | ||
132 | devices = g_slist_remove(devices, device); | |
133 | if (device->probes) { | |
134 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
135 | sr_device_probe_clear(device, pnum); | |
136 | g_slist_free(device->probes); | |
137 | } | |
138 | g_free(device); | |
139 | } | |
140 | ||
141 | void sr_device_probe_clear(struct sr_device *device, int probenum) | |
142 | { | |
143 | struct sr_probe *p; | |
144 | ||
145 | p = sr_device_probe_find(device, probenum); | |
146 | if (!p) | |
147 | return; | |
148 | ||
149 | if (p->name) { | |
150 | g_free(p->name); | |
151 | p->name = NULL; | |
152 | } | |
153 | ||
154 | if (p->trigger) { | |
155 | g_free(p->trigger); | |
156 | p->trigger = NULL; | |
157 | } | |
158 | } | |
159 | ||
160 | void sr_device_probe_add(struct sr_device *device, const char *name) | |
161 | { | |
162 | struct sr_probe *p; | |
163 | char probename[16]; | |
164 | int probenum; | |
165 | ||
166 | probenum = g_slist_length(device->probes) + 1; | |
167 | ||
168 | if (!(p = g_try_malloc0(sizeof(struct sr_probe)))) { | |
169 | sr_err("dev: %s: p malloc failed", __func__); | |
170 | // return SR_ERR_MALLOC; | |
171 | return; /* FIXME: should return int. */ | |
172 | } | |
173 | ||
174 | p->index = probenum; | |
175 | p->enabled = TRUE; | |
176 | if (name) { | |
177 | p->name = g_strdup(name); | |
178 | } else { | |
179 | snprintf(probename, 16, "%d", probenum); | |
180 | p->name = g_strdup(probename); | |
181 | } | |
182 | p->trigger = NULL; | |
183 | device->probes = g_slist_append(device->probes, p); | |
184 | } | |
185 | ||
186 | struct sr_probe *sr_device_probe_find(struct sr_device *device, int probenum) | |
187 | { | |
188 | GSList *l; | |
189 | struct sr_probe *p, *found_probe; | |
190 | ||
191 | found_probe = NULL; | |
192 | for (l = device->probes; l; l = l->next) { | |
193 | p = l->data; | |
194 | if (p->index == probenum) { | |
195 | found_probe = p; | |
196 | break; | |
197 | } | |
198 | } | |
199 | ||
200 | return found_probe; | |
201 | } | |
202 | ||
203 | /* TODO: return SR_ERR if probenum not found */ | |
204 | void sr_device_probe_name(struct sr_device *device, int probenum, | |
205 | const char *name) | |
206 | { | |
207 | struct sr_probe *p; | |
208 | ||
209 | p = sr_device_probe_find(device, probenum); | |
210 | if (!p) | |
211 | return; | |
212 | ||
213 | if (p->name) | |
214 | g_free(p->name); | |
215 | p->name = g_strdup(name); | |
216 | } | |
217 | ||
218 | /* TODO: return SR_ERR if probenum not found */ | |
219 | void sr_device_trigger_clear(struct sr_device *device) | |
220 | { | |
221 | struct sr_probe *p; | |
222 | unsigned int pnum; | |
223 | ||
224 | if (!device->probes) | |
225 | return; | |
226 | ||
227 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) { | |
228 | p = sr_device_probe_find(device, pnum); | |
229 | if (p && p->trigger) { | |
230 | g_free(p->trigger); | |
231 | p->trigger = NULL; | |
232 | } | |
233 | } | |
234 | } | |
235 | ||
236 | /* TODO: return SR_ERR if probenum not found */ | |
237 | void sr_device_trigger_set(struct sr_device *device, int probenum, | |
238 | const char *trigger) | |
239 | { | |
240 | struct sr_probe *p; | |
241 | ||
242 | p = sr_device_probe_find(device, probenum); | |
243 | if (!p) | |
244 | return; | |
245 | ||
246 | if (p->trigger) | |
247 | g_free(p->trigger); | |
248 | ||
249 | p->trigger = g_strdup(trigger); | |
250 | ||
251 | } | |
252 | ||
253 | gboolean sr_device_has_hwcap(struct sr_device *device, int hwcap) | |
254 | { | |
255 | int *capabilities, i; | |
256 | ||
257 | if (!device || !device->plugin) | |
258 | return FALSE; | |
259 | ||
260 | if ((capabilities = device->plugin->get_capabilities())) | |
261 | for (i = 0; capabilities[i]; i++) | |
262 | if (capabilities[i] == hwcap) | |
263 | return TRUE; | |
264 | ||
265 | return FALSE; | |
266 | } |