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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org> | |
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 "protocol.h" | |
21 | ||
22 | #define BRYMEN_BC86X "0820.0001" | |
23 | ||
24 | static const uint32_t scanopts[] = { | |
25 | SR_CONF_CONN, | |
26 | }; | |
27 | ||
28 | static const uint32_t devopts[] = { | |
29 | SR_CONF_MULTIMETER, | |
30 | SR_CONF_CONTINUOUS, | |
31 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
32 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
33 | }; | |
34 | ||
35 | SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info; | |
36 | ||
37 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
38 | { | |
39 | return std_init(sr_ctx, di, LOG_PREFIX); | |
40 | } | |
41 | ||
42 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
43 | { | |
44 | GSList *usb_devices, *devices, *l; | |
45 | struct drv_context *drvc; | |
46 | struct dev_context *devc; | |
47 | struct sr_dev_inst *sdi; | |
48 | struct sr_usb_dev_inst *usb; | |
49 | struct sr_config *src; | |
50 | const char *conn; | |
51 | ||
52 | drvc = di->priv; | |
53 | drvc->instances = NULL; | |
54 | ||
55 | conn = BRYMEN_BC86X; | |
56 | for (l = options; l; l = l->next) { | |
57 | src = l->data; | |
58 | switch (src->key) { | |
59 | case SR_CONF_CONN: | |
60 | conn = g_variant_get_string(src->data, NULL); | |
61 | break; | |
62 | } | |
63 | } | |
64 | ||
65 | devices = NULL; | |
66 | if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
67 | g_slist_free_full(usb_devices, g_free); | |
68 | return NULL; | |
69 | } | |
70 | ||
71 | for (l = usb_devices; l; l = l->next) { | |
72 | usb = l->data; | |
73 | ||
74 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
75 | sdi->status = SR_ST_INACTIVE; | |
76 | sdi->vendor = g_strdup("Brymen"); | |
77 | sdi->model = g_strdup("BM869"); | |
78 | devc = g_malloc0(sizeof(struct dev_context)); | |
79 | sdi->priv = devc; | |
80 | sdi->driver = di; | |
81 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
82 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P2"); | |
83 | ||
84 | sdi->inst_type = SR_INST_USB; | |
85 | sdi->conn = usb; | |
86 | ||
87 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
88 | devices = g_slist_append(devices, sdi); | |
89 | } | |
90 | ||
91 | return devices; | |
92 | } | |
93 | ||
94 | static GSList *dev_list(const struct sr_dev_driver *di) | |
95 | { | |
96 | return ((struct drv_context *)(di->priv))->instances; | |
97 | } | |
98 | ||
99 | static int dev_open(struct sr_dev_inst *sdi) | |
100 | { | |
101 | struct sr_dev_driver *di = sdi->driver; | |
102 | struct drv_context *drvc = di->priv; | |
103 | struct sr_usb_dev_inst *usb; | |
104 | struct dev_context *devc; | |
105 | int ret; | |
106 | ||
107 | usb = sdi->conn; | |
108 | devc = sdi->priv; | |
109 | ||
110 | if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK) | |
111 | sdi->status = SR_ST_ACTIVE; | |
112 | ||
113 | /* Detach kernel drivers which grabbed this device (if any). */ | |
114 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
115 | ret = libusb_detach_kernel_driver(usb->devhdl, 0); | |
116 | if (ret < 0) { | |
117 | sr_err("Failed to detach kernel driver: %s.", | |
118 | libusb_error_name(ret)); | |
119 | return SR_ERR; | |
120 | } | |
121 | devc->detached_kernel_driver = 1; | |
122 | sr_dbg("Successfully detached kernel driver."); | |
123 | } else { | |
124 | sr_dbg("No need to detach a kernel driver."); | |
125 | } | |
126 | ||
127 | /* Claim interface 0. */ | |
128 | if ((ret = libusb_claim_interface(usb->devhdl, 0)) < 0) { | |
129 | sr_err("Failed to claim interface 0: %s.", | |
130 | libusb_error_name(ret)); | |
131 | return SR_ERR; | |
132 | } | |
133 | sr_dbg("Successfully claimed interface 0."); | |
134 | ||
135 | return ret; | |
136 | } | |
137 | ||
138 | static int dev_close(struct sr_dev_inst *sdi) | |
139 | { | |
140 | struct sr_usb_dev_inst *usb; | |
141 | struct dev_context *devc; | |
142 | int ret; | |
143 | ||
144 | usb = sdi->conn; | |
145 | devc = sdi->priv; | |
146 | ||
147 | if ((ret = libusb_release_interface(usb->devhdl, 0))) | |
148 | sr_err("Failed to release interface 0: %s.\n", libusb_error_name(ret)); | |
149 | else | |
150 | sr_dbg("Successfully released interface 0.\n"); | |
151 | ||
152 | if (!ret && devc->detached_kernel_driver) { | |
153 | if ((ret = libusb_attach_kernel_driver(usb->devhdl, 0))) { | |
154 | sr_err("Failed to attach kernel driver: %s.\n", | |
155 | libusb_error_name(ret)); | |
156 | } else { | |
157 | devc->detached_kernel_driver = 0; | |
158 | sr_dbg("Successfully attached kernel driver.\n"); | |
159 | } | |
160 | } | |
161 | ||
162 | libusb_close(usb->devhdl); | |
163 | ||
164 | sdi->status = SR_ST_INACTIVE; | |
165 | ||
166 | return ret; | |
167 | } | |
168 | ||
169 | static int cleanup(const struct sr_dev_driver *di) | |
170 | { | |
171 | return std_dev_clear(di, NULL); | |
172 | } | |
173 | ||
174 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
175 | const struct sr_channel_group *cg) | |
176 | { | |
177 | struct dev_context *devc = sdi->priv; | |
178 | ||
179 | (void)cg; | |
180 | ||
181 | switch (key) { | |
182 | case SR_CONF_LIMIT_SAMPLES: | |
183 | *data = g_variant_new_uint64(devc->limit_samples); | |
184 | break; | |
185 | case SR_CONF_LIMIT_MSEC: | |
186 | *data = g_variant_new_uint64(devc->limit_msec); | |
187 | break; | |
188 | default: | |
189 | return SR_ERR_NA; | |
190 | } | |
191 | ||
192 | return SR_OK; | |
193 | } | |
194 | ||
195 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
196 | const struct sr_channel_group *cg) | |
197 | { | |
198 | struct dev_context *devc; | |
199 | ||
200 | (void)cg; | |
201 | ||
202 | if (sdi->status != SR_ST_ACTIVE) | |
203 | return SR_ERR_DEV_CLOSED; | |
204 | ||
205 | if (!(devc = sdi->priv)) { | |
206 | sr_err("sdi->priv was NULL."); | |
207 | return SR_ERR_BUG; | |
208 | } | |
209 | ||
210 | switch (key) { | |
211 | case SR_CONF_LIMIT_SAMPLES: | |
212 | devc->limit_samples = g_variant_get_uint64(data); | |
213 | sr_dbg("Setting sample limit to %" PRIu64 ".", devc->limit_samples); | |
214 | break; | |
215 | case SR_CONF_LIMIT_MSEC: | |
216 | devc->limit_msec = g_variant_get_uint64(data); | |
217 | sr_dbg("Setting time limit to %" PRIu64 "ms.", devc->limit_msec); | |
218 | break; | |
219 | default: | |
220 | return SR_ERR_NA; | |
221 | } | |
222 | ||
223 | return SR_OK; | |
224 | } | |
225 | ||
226 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
227 | const struct sr_channel_group *cg) | |
228 | { | |
229 | (void)sdi; | |
230 | (void)cg; | |
231 | ||
232 | switch (key) { | |
233 | case SR_CONF_SCAN_OPTIONS: | |
234 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
235 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
236 | break; | |
237 | case SR_CONF_DEVICE_OPTIONS: | |
238 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
239 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
240 | break; | |
241 | default: | |
242 | return SR_ERR_NA; | |
243 | } | |
244 | ||
245 | return SR_OK; | |
246 | } | |
247 | ||
248 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
249 | void *cb_data) | |
250 | { | |
251 | struct dev_context *devc; | |
252 | ||
253 | (void)cb_data; | |
254 | ||
255 | if (sdi->status != SR_ST_ACTIVE) | |
256 | return SR_ERR_DEV_CLOSED; | |
257 | ||
258 | devc = sdi->priv; | |
259 | devc->start_time = g_get_monotonic_time(); | |
260 | ||
261 | /* Send header packet to the session bus. */ | |
262 | std_session_send_df_header(sdi, LOG_PREFIX); | |
263 | ||
264 | sr_session_source_add(sdi->session, 0, 0, 10, | |
265 | brymen_bm86x_receive_data, (void *)sdi); | |
266 | ||
267 | return SR_OK; | |
268 | } | |
269 | ||
270 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
271 | { | |
272 | struct sr_datafeed_packet packet; | |
273 | ||
274 | (void)cb_data; | |
275 | ||
276 | if (sdi->status != SR_ST_ACTIVE) | |
277 | return SR_ERR_DEV_CLOSED; | |
278 | ||
279 | /* Send end packet to the session bus. */ | |
280 | packet.type = SR_DF_END; | |
281 | sr_session_send(sdi, &packet); | |
282 | ||
283 | sr_session_source_remove(sdi->session, 0); | |
284 | ||
285 | return SR_OK; | |
286 | } | |
287 | ||
288 | SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info = { | |
289 | .name = "brymen-bm86x", | |
290 | .longname = "Brymen BM86X", | |
291 | .api_version = 1, | |
292 | .init = init, | |
293 | .cleanup = cleanup, | |
294 | .scan = scan, | |
295 | .dev_list = dev_list, | |
296 | .dev_clear = NULL, | |
297 | .config_get = config_get, | |
298 | .config_set = config_set, | |
299 | .config_list = config_list, | |
300 | .dev_open = dev_open, | |
301 | .dev_close = dev_close, | |
302 | .dev_acquisition_start = dev_acquisition_start, | |
303 | .dev_acquisition_stop = dev_acquisition_stop, | |
304 | .priv = NULL, | |
305 | }; |