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8d9c8554 AJ |
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 | ||
ecaa89af AJ |
22 | #define BRYMEN_BC86X "0820.0001" |
23 | ||
24 | static const int32_t hwopts[] = { | |
25 | SR_CONF_CONN, | |
26 | }; | |
27 | ||
28 | static const int32_t hwcaps[] = { | |
29 | SR_CONF_MULTIMETER, | |
30 | SR_CONF_LIMIT_SAMPLES, | |
31 | SR_CONF_LIMIT_MSEC, | |
32 | SR_CONF_CONTINUOUS, | |
33 | }; | |
34 | ||
8d9c8554 AJ |
35 | SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info; |
36 | static struct sr_dev_driver *di = &brymen_bm86x_driver_info; | |
37 | ||
38 | static int init(struct sr_context *sr_ctx) | |
39 | { | |
40 | return std_init(sr_ctx, di, LOG_PREFIX); | |
41 | } | |
42 | ||
43 | static GSList *scan(GSList *options) | |
44 | { | |
ecaa89af | 45 | GSList *usb_devices, *devices, *l; |
8d9c8554 | 46 | struct drv_context *drvc; |
ecaa89af AJ |
47 | struct dev_context *devc; |
48 | struct sr_dev_inst *sdi; | |
49 | struct sr_usb_dev_inst *usb; | |
50 | struct sr_config *src; | |
51 | struct sr_probe *probe; | |
52 | const char *conn; | |
8d9c8554 | 53 | |
8d9c8554 AJ |
54 | drvc = di->priv; |
55 | drvc->instances = NULL; | |
56 | ||
ecaa89af AJ |
57 | conn = BRYMEN_BC86X; |
58 | for (l = options; l; l = l->next) { | |
59 | src = l->data; | |
60 | switch (src->key) { | |
61 | case SR_CONF_CONN: | |
62 | conn = g_variant_get_string(src->data, NULL); | |
63 | break; | |
64 | } | |
65 | } | |
66 | ||
67 | devices = NULL; | |
68 | if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
69 | g_slist_free_full(usb_devices, g_free); | |
70 | return NULL; | |
71 | } | |
72 | ||
73 | for (l = usb_devices; l; l = l->next) { | |
74 | usb = l->data; | |
75 | ||
76 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, | |
77 | "Brymen", "BM869", NULL))) { | |
78 | sr_err("sr_dev_inst_new returned NULL."); | |
79 | return NULL; | |
80 | } | |
81 | ||
82 | if (!(devc = g_try_malloc0(sizeof(*devc)))) { | |
83 | sr_err("Device context malloc failed."); | |
84 | return NULL; | |
85 | } | |
86 | ||
87 | sdi->priv = devc; | |
88 | sdi->driver = di; | |
89 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
90 | return NULL; | |
91 | sdi->probes = g_slist_append(sdi->probes, probe); | |
92 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P2"))) | |
93 | return NULL; | |
94 | sdi->probes = g_slist_append(sdi->probes, probe); | |
95 | ||
96 | sdi->inst_type = SR_INST_USB; | |
97 | sdi->conn = usb; | |
98 | ||
99 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
100 | devices = g_slist_append(devices, sdi); | |
101 | } | |
8d9c8554 AJ |
102 | |
103 | return devices; | |
104 | } | |
105 | ||
106 | static GSList *dev_list(void) | |
107 | { | |
108 | return ((struct drv_context *)(di->priv))->instances; | |
109 | } | |
110 | ||
111 | static int dev_clear(void) | |
112 | { | |
113 | return std_dev_clear(di, NULL); | |
114 | } | |
115 | ||
116 | static int dev_open(struct sr_dev_inst *sdi) | |
117 | { | |
ecaa89af AJ |
118 | struct drv_context *drvc = di->priv; |
119 | struct sr_usb_dev_inst *usb; | |
120 | struct dev_context *devc; | |
121 | int ret; | |
8d9c8554 | 122 | |
ecaa89af AJ |
123 | usb = sdi->conn; |
124 | devc = sdi->priv; | |
125 | ||
126 | if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK) | |
127 | sdi->status = SR_ST_ACTIVE; | |
128 | ||
129 | /* Detach kernel drivers which grabbed this device (if any). */ | |
130 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
131 | ret = libusb_detach_kernel_driver(usb->devhdl, 0); | |
132 | if (ret < 0) { | |
133 | sr_err("Failed to detach kernel driver: %s.", | |
134 | libusb_error_name(ret)); | |
135 | return SR_ERR; | |
136 | } | |
137 | devc->detached_kernel_driver = 1; | |
138 | sr_dbg("Successfully detached kernel driver."); | |
139 | } else { | |
140 | sr_dbg("No need to detach a kernel driver."); | |
141 | } | |
8d9c8554 | 142 | |
ecaa89af AJ |
143 | /* Claim interface 0. */ |
144 | if ((ret = libusb_claim_interface(usb->devhdl, 0)) < 0) { | |
145 | sr_err("Failed to claim interface 0: %s.", | |
146 | libusb_error_name(ret)); | |
147 | return SR_ERR; | |
148 | } | |
149 | sr_dbg("Successfully claimed interface 0."); | |
8d9c8554 | 150 | |
ecaa89af | 151 | return ret; |
8d9c8554 AJ |
152 | } |
153 | ||
154 | static int dev_close(struct sr_dev_inst *sdi) | |
155 | { | |
ecaa89af AJ |
156 | struct sr_usb_dev_inst *usb; |
157 | struct dev_context *devc; | |
158 | int ret; | |
159 | ||
160 | usb = sdi->conn; | |
161 | devc = sdi->priv; | |
162 | ||
163 | if ((ret = libusb_release_interface(usb->devhdl, 0))) | |
164 | sr_err("Failed to release interface 0: %s.\n", libusb_error_name(ret)); | |
165 | else | |
166 | sr_dbg("Successfully released interface 0.\n"); | |
167 | ||
168 | if (!ret && devc->detached_kernel_driver) { | |
169 | if ((ret = libusb_attach_kernel_driver(usb->devhdl, 0))) { | |
170 | sr_err("Failed to attach kernel driver: %s.\n", | |
171 | libusb_error_name(ret)); | |
172 | } else { | |
173 | devc->detached_kernel_driver = 0; | |
174 | sr_dbg("Successfully attached kernel driver.\n"); | |
175 | } | |
176 | } | |
8d9c8554 | 177 | |
ecaa89af | 178 | libusb_close(usb->devhdl); |
8d9c8554 AJ |
179 | |
180 | sdi->status = SR_ST_INACTIVE; | |
181 | ||
ecaa89af | 182 | return ret; |
8d9c8554 AJ |
183 | } |
184 | ||
185 | static int cleanup(void) | |
186 | { | |
ecaa89af | 187 | return dev_clear(); |
8d9c8554 AJ |
188 | } |
189 | ||
190 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
191 | const struct sr_probe_group *probe_group) | |
192 | { | |
ecaa89af | 193 | struct dev_context *devc = sdi->priv; |
8d9c8554 | 194 | |
8d9c8554 AJ |
195 | (void)probe_group; |
196 | ||
8d9c8554 | 197 | switch (key) { |
ecaa89af AJ |
198 | case SR_CONF_LIMIT_SAMPLES: |
199 | *data = g_variant_new_uint64(devc->limit_samples); | |
200 | break; | |
201 | case SR_CONF_LIMIT_MSEC: | |
202 | *data = g_variant_new_uint64(devc->limit_msec); | |
203 | break; | |
8d9c8554 AJ |
204 | default: |
205 | return SR_ERR_NA; | |
206 | } | |
207 | ||
ecaa89af | 208 | return SR_OK; |
8d9c8554 AJ |
209 | } |
210 | ||
211 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, | |
212 | const struct sr_probe_group *probe_group) | |
213 | { | |
ecaa89af | 214 | struct dev_context *devc; |
8d9c8554 | 215 | |
8d9c8554 AJ |
216 | (void)probe_group; |
217 | ||
218 | if (sdi->status != SR_ST_ACTIVE) | |
219 | return SR_ERR_DEV_CLOSED; | |
220 | ||
ecaa89af AJ |
221 | if (!(devc = sdi->priv)) { |
222 | sr_err("sdi->priv was NULL."); | |
223 | return SR_ERR_BUG; | |
224 | } | |
225 | ||
8d9c8554 | 226 | switch (key) { |
ecaa89af AJ |
227 | case SR_CONF_LIMIT_SAMPLES: |
228 | devc->limit_samples = g_variant_get_uint64(data); | |
229 | sr_dbg("Setting sample limit to %" PRIu64 ".", devc->limit_samples); | |
230 | break; | |
231 | case SR_CONF_LIMIT_MSEC: | |
232 | devc->limit_msec = g_variant_get_uint64(data); | |
233 | sr_dbg("Setting time limit to %" PRIu64 "ms.", devc->limit_msec); | |
234 | break; | |
8d9c8554 | 235 | default: |
ecaa89af | 236 | return SR_ERR_NA; |
8d9c8554 AJ |
237 | } |
238 | ||
ecaa89af | 239 | return SR_OK; |
8d9c8554 AJ |
240 | } |
241 | ||
242 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
243 | const struct sr_probe_group *probe_group) | |
244 | { | |
8d9c8554 | 245 | (void)sdi; |
8d9c8554 AJ |
246 | (void)probe_group; |
247 | ||
8d9c8554 | 248 | switch (key) { |
ecaa89af AJ |
249 | case SR_CONF_SCAN_OPTIONS: |
250 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
251 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
252 | break; | |
253 | case SR_CONF_DEVICE_OPTIONS: | |
254 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
255 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
256 | break; | |
8d9c8554 AJ |
257 | default: |
258 | return SR_ERR_NA; | |
259 | } | |
260 | ||
ecaa89af | 261 | return SR_OK; |
8d9c8554 AJ |
262 | } |
263 | ||
264 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
265 | void *cb_data) | |
266 | { | |
ecaa89af | 267 | struct dev_context *devc; |
8d9c8554 AJ |
268 | |
269 | if (sdi->status != SR_ST_ACTIVE) | |
270 | return SR_ERR_DEV_CLOSED; | |
271 | ||
ecaa89af AJ |
272 | devc = sdi->priv; |
273 | devc->session_cb_data = cb_data; | |
274 | devc->start_time = g_get_monotonic_time(); | |
275 | ||
276 | /* Send header packet to the session bus. */ | |
277 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
278 | ||
279 | sr_source_add(0, 0, 10, brymen_bm86x_receive_data, (void *)sdi); | |
8d9c8554 AJ |
280 | |
281 | return SR_OK; | |
282 | } | |
283 | ||
284 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
285 | { | |
ecaa89af | 286 | struct sr_datafeed_packet packet; |
8d9c8554 AJ |
287 | |
288 | if (sdi->status != SR_ST_ACTIVE) | |
289 | return SR_ERR_DEV_CLOSED; | |
290 | ||
ecaa89af AJ |
291 | /* Send end packet to the session bus. */ |
292 | packet.type = SR_DF_END; | |
293 | sr_session_send(cb_data, &packet); | |
294 | ||
295 | sr_source_remove(0); | |
8d9c8554 AJ |
296 | |
297 | return SR_OK; | |
298 | } | |
299 | ||
300 | SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info = { | |
301 | .name = "brymen-bm86x", | |
302 | .longname = "Brymen BM86X", | |
303 | .api_version = 1, | |
304 | .init = init, | |
305 | .cleanup = cleanup, | |
306 | .scan = scan, | |
307 | .dev_list = dev_list, | |
308 | .dev_clear = dev_clear, | |
309 | .config_get = config_get, | |
310 | .config_set = config_set, | |
311 | .config_list = config_list, | |
312 | .dev_open = dev_open, | |
313 | .dev_close = dev_close, | |
314 | .dev_acquisition_start = dev_acquisition_start, | |
315 | .dev_acquisition_stop = dev_acquisition_stop, | |
316 | .priv = NULL, | |
317 | }; |