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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 | struct sr_device *device; | |
65 | ||
66 | while (devices) { | |
67 | device = devices->data; | |
68 | if (device->plugin && device->plugin->close) | |
69 | device->plugin->close(device->plugin_index); | |
70 | sr_device_destroy(device); | |
71 | } | |
72 | } | |
73 | ||
74 | GSList *sr_device_list(void) | |
75 | { | |
76 | ||
77 | if (!devices) | |
78 | sr_device_scan(); | |
79 | ||
80 | return devices; | |
81 | } | |
82 | ||
83 | struct sr_device *sr_device_new(struct sr_device_plugin *plugin, int plugin_index, | |
84 | int num_probes) | |
85 | { | |
86 | struct sr_device *device; | |
87 | int i; | |
88 | ||
89 | if (!(device = g_try_malloc0(sizeof(struct sr_device)))) { | |
90 | sr_err("dev: %s: device malloc failed", __func__); | |
91 | return NULL; | |
92 | } | |
93 | ||
94 | device->plugin = plugin; | |
95 | device->plugin_index = plugin_index; | |
96 | devices = g_slist_append(devices, device); | |
97 | ||
98 | for (i = 0; i < num_probes; i++) | |
99 | sr_device_probe_add(device, NULL); | |
100 | ||
101 | return device; | |
102 | } | |
103 | ||
104 | void sr_device_clear(struct sr_device *device) | |
105 | { | |
106 | unsigned int pnum; | |
107 | ||
108 | /* TODO: Plugin-specific clear call? */ | |
109 | ||
110 | if (!device->probes) | |
111 | return; | |
112 | ||
113 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
114 | sr_device_probe_clear(device, pnum); | |
115 | } | |
116 | ||
117 | void sr_device_destroy(struct sr_device *device) | |
118 | { | |
119 | unsigned int pnum; | |
120 | ||
121 | /* | |
122 | * TODO: Plugin-specific destroy call, need to decrease refcount | |
123 | * in plugin. | |
124 | */ | |
125 | ||
126 | devices = g_slist_remove(devices, device); | |
127 | if (device->probes) { | |
128 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) | |
129 | sr_device_probe_clear(device, pnum); | |
130 | g_slist_free(device->probes); | |
131 | } | |
132 | g_free(device); | |
133 | } | |
134 | ||
135 | void sr_device_probe_clear(struct sr_device *device, int probenum) | |
136 | { | |
137 | struct sr_probe *p; | |
138 | ||
139 | p = sr_device_probe_find(device, probenum); | |
140 | if (!p) | |
141 | return; | |
142 | ||
143 | if (p->name) { | |
144 | g_free(p->name); | |
145 | p->name = NULL; | |
146 | } | |
147 | ||
148 | if (p->trigger) { | |
149 | g_free(p->trigger); | |
150 | p->trigger = NULL; | |
151 | } | |
152 | } | |
153 | ||
154 | void sr_device_probe_add(struct sr_device *device, const char *name) | |
155 | { | |
156 | struct sr_probe *p; | |
157 | char probename[16]; | |
158 | int probenum; | |
159 | ||
160 | probenum = g_slist_length(device->probes) + 1; | |
161 | ||
162 | if (!(p = g_try_malloc0(sizeof(struct sr_probe)))) { | |
163 | sr_err("dev: %s: p malloc failed", __func__); | |
164 | // return SR_ERR_MALLOC; | |
165 | return; /* FIXME: should return int. */ | |
166 | } | |
167 | ||
168 | p->index = probenum; | |
169 | p->enabled = TRUE; | |
170 | if (name) { | |
171 | p->name = g_strdup(name); | |
172 | } else { | |
173 | snprintf(probename, 16, "%d", probenum); | |
174 | p->name = g_strdup(probename); | |
175 | } | |
176 | p->trigger = NULL; | |
177 | device->probes = g_slist_append(device->probes, p); | |
178 | } | |
179 | ||
180 | struct sr_probe *sr_device_probe_find(struct sr_device *device, int probenum) | |
181 | { | |
182 | GSList *l; | |
183 | struct sr_probe *p, *found_probe; | |
184 | ||
185 | found_probe = NULL; | |
186 | for (l = device->probes; l; l = l->next) { | |
187 | p = l->data; | |
188 | if (p->index == probenum) { | |
189 | found_probe = p; | |
190 | break; | |
191 | } | |
192 | } | |
193 | ||
194 | return found_probe; | |
195 | } | |
196 | ||
197 | /* TODO: return SR_ERR if probenum not found */ | |
198 | void sr_device_probe_name(struct sr_device *device, int probenum, | |
199 | const char *name) | |
200 | { | |
201 | struct sr_probe *p; | |
202 | ||
203 | p = sr_device_probe_find(device, probenum); | |
204 | if (!p) | |
205 | return; | |
206 | ||
207 | if (p->name) | |
208 | g_free(p->name); | |
209 | p->name = g_strdup(name); | |
210 | } | |
211 | ||
212 | /* TODO: return SR_ERR if probenum not found */ | |
213 | void sr_device_trigger_clear(struct sr_device *device) | |
214 | { | |
215 | struct sr_probe *p; | |
216 | unsigned int pnum; | |
217 | ||
218 | if (!device->probes) | |
219 | return; | |
220 | ||
221 | for (pnum = 1; pnum <= g_slist_length(device->probes); pnum++) { | |
222 | p = sr_device_probe_find(device, pnum); | |
223 | if (p && p->trigger) { | |
224 | g_free(p->trigger); | |
225 | p->trigger = NULL; | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | /* TODO: return SR_ERR if probenum not found */ | |
231 | void sr_device_trigger_set(struct sr_device *device, int probenum, | |
232 | const char *trigger) | |
233 | { | |
234 | struct sr_probe *p; | |
235 | ||
236 | p = sr_device_probe_find(device, probenum); | |
237 | if (!p) | |
238 | return; | |
239 | ||
240 | if (p->trigger) | |
241 | g_free(p->trigger); | |
242 | ||
243 | p->trigger = g_strdup(trigger); | |
244 | ||
245 | } | |
246 | ||
247 | gboolean sr_device_has_hwcap(struct sr_device *device, int hwcap) | |
248 | { | |
249 | int *capabilities, i; | |
250 | ||
251 | if (!device || !device->plugin) | |
252 | return FALSE; | |
253 | ||
254 | if ((capabilities = device->plugin->get_capabilities())) | |
255 | for (i = 0; capabilities[i]; i++) | |
256 | if (capabilities[i] == hwcap) | |
257 | return TRUE; | |
258 | ||
259 | return FALSE; | |
260 | } |