File: | dev/usb/uoaklux.c |
Warning: | line 232, column 2 Value stored to 'frame' is never read |
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1 | /* $OpenBSD: uoaklux.c,v 1.16 2022/01/09 05:43:01 jsg Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2012 Yojiro UO <yuo@nui.org> |
5 | * |
6 | * Permission to use, copy, modify, and distribute this software for any |
7 | * purpose with or without fee is hereby granted, provided that the above |
8 | * copyright notice and this permission notice appear in all copies. |
9 | * |
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCAIMS ALL WARRANTIES |
11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 | */ |
18 | |
19 | /* TORADEX OAK series sensors: lux sensor driver */ |
20 | /* http://developer.toradex.com/files/toradex-dev/uploads/media/Oak/Oak_ProgrammingGuide.pdf */ |
21 | |
22 | #include <sys/param.h> |
23 | #include <sys/systm.h> |
24 | #include <sys/kernel.h> |
25 | #include <sys/malloc.h> |
26 | #include <sys/device.h> |
27 | #include <sys/conf.h> |
28 | #include <sys/sensors.h> |
29 | |
30 | #include <dev/usb/usb.h> |
31 | #include <dev/usb/usbhid.h> |
32 | #include <dev/usb/usbdi.h> |
33 | #include <dev/usb/usbdevs.h> |
34 | #include <dev/usb/uhidev.h> |
35 | |
36 | #include "uoak.h" |
37 | |
38 | #ifdef UOAKLUX_DEBUG |
39 | int uoakluxdebug = 0; |
40 | #define DPRINTFN(n, x) do { if (uoakluxdebug > (n)) printf x; } while (0) |
41 | #else |
42 | #define DPRINTFN(n, x) |
43 | #endif |
44 | |
45 | #define DPRINTF(x) DPRINTFN(0, x) |
46 | |
47 | #define UOAKLUX_SAMPLE_RATE200 200 /* ms */ |
48 | #define UOAKLUX_REFRESH_PERIOD5 5 /* 5 sec : 0.2Hz */ |
49 | |
50 | struct uoaklux_sensor { |
51 | struct uoak_sensor lux; |
52 | /* lux sensor setting */ |
53 | uint8_t gain; |
54 | int inttime; |
55 | |
56 | }; |
57 | |
58 | struct uoaklux_softc { |
59 | struct uhidev sc_hdev; |
60 | |
61 | /* uoak common */ |
62 | struct uoak_softc sc_uoak_softc; |
63 | |
64 | /* sensor framework */ |
65 | struct uoaklux_sensor sc_sensor; |
66 | struct ksensordev sc_sensordev; |
67 | struct sensor_task *sc_sensortask; |
68 | }; |
69 | |
70 | const struct usb_devno uoaklux_devs[] = { |
71 | { USB_VENDOR_TORADEX0x1b67, USB_PRODUCT_TORADEX_LUX0x0003}, |
72 | }; |
73 | #define uoaklux_lookup(v, p)usbd_match_device((const struct usb_devno *)(uoaklux_devs), sizeof (uoaklux_devs) / sizeof ((uoaklux_devs)[0]), sizeof ((uoaklux_devs )[0]), (v), (p)) usb_lookup(uoaklux_devs, v, p)usbd_match_device((const struct usb_devno *)(uoaklux_devs), sizeof (uoaklux_devs) / sizeof ((uoaklux_devs)[0]), sizeof ((uoaklux_devs )[0]), (v), (p)) |
74 | |
75 | int uoaklux_match(struct device *, void *, void *); |
76 | void uoaklux_attach(struct device *, struct device *, void *); |
77 | int uoaklux_detach(struct device *, int); |
78 | |
79 | void uoaklux_intr(struct uhidev *, void *, u_int); |
80 | void uoaklux_refresh(void *); |
81 | |
82 | int uoaklux_get_sensor_setting(struct uoaklux_softc *, enum uoak_target); |
83 | |
84 | void uoaklux_dev_setting(void *, enum uoak_target); |
85 | void uoaklux_dev_print(void *, enum uoak_target); |
86 | |
87 | |
88 | struct cfdriver uoaklux_cd = { |
89 | NULL((void *)0), "uoaklux", DV_DULL |
90 | }; |
91 | |
92 | const struct cfattach uoaklux_ca = { |
93 | sizeof(struct uoaklux_softc), |
94 | uoaklux_match, |
95 | uoaklux_attach, |
96 | uoaklux_detach, |
97 | }; |
98 | |
99 | struct uoak_methods uoaklux_methods = { |
100 | uoaklux_dev_print, |
101 | uoaklux_dev_setting |
102 | }; |
103 | |
104 | |
105 | int |
106 | uoaklux_match(struct device *parent, void *match, void *aux) |
107 | { |
108 | struct uhidev_attach_arg *uha = aux; |
109 | |
110 | if (UHIDEV_CLAIM_MULTIPLE_REPORTID(uha)((uha)->claimed != ((void *)0))) |
111 | return (UMATCH_NONE0); |
112 | |
113 | if (uoaklux_lookup(uha->uaa->vendor, uha->uaa->product)usbd_match_device((const struct usb_devno *)(uoaklux_devs), sizeof (uoaklux_devs) / sizeof ((uoaklux_devs)[0]), sizeof ((uoaklux_devs )[0]), (uha->uaa->vendor), (uha->uaa->product)) == NULL((void *)0)) |
114 | return UMATCH_NONE0; |
115 | |
116 | return (UMATCH_VENDOR_PRODUCT13); |
117 | } |
118 | |
119 | void |
120 | uoaklux_attach(struct device *parent, struct device *self, void *aux) |
121 | { |
122 | struct uoaklux_softc *sc = (struct uoaklux_softc *)self; |
123 | struct usb_attach_arg *uaa = aux; |
124 | struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)uaa; |
125 | struct usbd_device *dev = uha->parent->sc_udev; |
126 | |
127 | struct uoak_softc *scc = &sc->sc_uoak_softc; |
128 | int err, size, repid; |
129 | void *desc; |
130 | |
131 | sc->sc_hdev.sc_intr = uoaklux_intr; |
132 | sc->sc_hdev.sc_parent = uha->parent; |
133 | sc->sc_hdev.sc_report_id = uha->reportid; |
134 | |
135 | scc->sc_parent = sc; |
136 | scc->sc_udev = dev; |
137 | scc->sc_hdev = &sc->sc_hdev; |
138 | scc->sc_methods = &uoaklux_methods; |
139 | scc->sc_sensordev = &sc->sc_sensordev; |
140 | |
141 | uhidev_get_report_desc(uha->parent, &desc, &size); |
142 | repid = uha->reportid; |
143 | scc->sc_ilen = hid_report_size(desc, size, hid_input, repid); |
144 | scc->sc_olen = hid_report_size(desc, size, hid_output, repid); |
145 | scc->sc_flen = hid_report_size(desc, size, hid_feature, repid); |
146 | |
147 | /*device initialize */ |
148 | (void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_ON0x1); |
149 | err = uoak_set_sample_rate(scc, OAK_TARGET_RAM, UOAKLUX_SAMPLE_RATE200); |
150 | if (err) { |
151 | printf("%s: could not set sampling rate. exit\n", |
152 | sc->sc_hdev.sc_dev.dv_xname); |
153 | return; |
154 | } |
155 | |
156 | /* query and print device setting */ |
157 | uoak_get_devinfo(scc); |
158 | uoak_print_devinfo(scc); |
159 | |
160 | DPRINTF((" config in RAM\n")); |
161 | uoak_get_setting(scc, OAK_TARGET_RAM); |
162 | uoak_print_setting(scc, OAK_TARGET_RAM); |
163 | #ifdef UOAKLUX_DEBUG |
164 | DPRINTF((" config in FLASh\n")); |
165 | uoak_get_setting(scc, OAK_TARGET_FLASH); |
166 | uoak_print_setting(scc, OAK_TARGET_FLASH); |
167 | #endif |
168 | |
169 | /* attach sensor */ |
170 | strlcpy(sc->sc_sensordev.xname, sc->sc_hdev.sc_dev.dv_xname, |
171 | sizeof(sc->sc_sensordev.xname)); |
172 | uoak_sensor_attach(scc, &sc->sc_sensor.lux, SENSOR_LUX); |
173 | |
174 | /* start sensor */ |
175 | sc->sc_sensortask = sensor_task_register(sc, uoaklux_refresh, |
176 | UOAKLUX_REFRESH_PERIOD5); |
177 | if (sc->sc_sensortask == NULL((void *)0)) { |
178 | printf(", unable to register update task\n"); |
179 | return; |
180 | } |
181 | sensordev_install(&sc->sc_sensordev); |
182 | |
183 | err = uhidev_open(&sc->sc_hdev); |
184 | if (err) { |
185 | printf("%s: could not open interrupt pipe, quit\n", |
186 | sc->sc_hdev.sc_dev.dv_xname); |
187 | return; |
188 | } |
189 | scc->sc_ibuf = malloc(scc->sc_ilen, M_USBDEV102, M_WAITOK0x0001); |
190 | |
191 | DPRINTF(("uoaklux_attach: complete\n")); |
192 | } |
193 | |
194 | |
195 | int |
196 | uoaklux_detach(struct device *self, int flags) |
197 | { |
198 | struct uoaklux_softc *sc = (struct uoaklux_softc *)self; |
199 | struct uoak_softc *scc = &sc->sc_uoak_softc; |
200 | int rv = 0; |
201 | |
202 | wakeup(&sc->sc_sensortask); |
203 | sensordev_deinstall(&sc->sc_sensordev); |
204 | |
205 | uoak_sensor_detach(scc, &sc->sc_sensor.lux); |
206 | |
207 | if (sc->sc_sensortask != NULL((void *)0)) |
208 | sensor_task_unregister(sc->sc_sensortask); |
209 | |
210 | if (sc->sc_hdev.sc_state & UHIDEV_OPEN0x01) |
211 | uhidev_close(&sc->sc_hdev); |
212 | |
213 | if (scc->sc_ibuf != NULL((void *)0)) { |
214 | free(scc->sc_ibuf, M_USBDEV102, scc->sc_ilen); |
215 | scc->sc_ibuf = NULL((void *)0); |
216 | } |
217 | |
218 | return (rv); |
219 | } |
220 | |
221 | void |
222 | uoaklux_intr(struct uhidev *addr, void *ibuf, u_int len) |
223 | { |
224 | struct uoaklux_softc *sc = (struct uoaklux_softc *)addr; |
225 | struct uoak_softc *scc = &sc->sc_uoak_softc; |
226 | int frame, val; |
227 | |
228 | if (scc->sc_ibuf == NULL((void *)0)) |
229 | return; |
230 | |
231 | memcpy(scc->sc_ibuf, ibuf, len)__builtin_memcpy((scc->sc_ibuf), (ibuf), (len)); |
232 | frame = (scc->sc_ibuf[1] << 8) + (scc->sc_ibuf[0]); |
Value stored to 'frame' is never read | |
233 | val = (scc->sc_ibuf[3] << 8) + (scc->sc_ibuf[2]); |
234 | uoak_sensor_update(&sc->sc_sensor.lux, val); |
235 | } |
236 | |
237 | void |
238 | uoaklux_refresh(void *arg) |
239 | { |
240 | struct uoaklux_softc *sc = arg; |
241 | struct uoak_softc *scc = &sc->sc_uoak_softc; |
242 | uint8_t led; |
243 | |
244 | /* blink LED for each cycle */ |
245 | if (uoak_led_status(scc, OAK_TARGET_RAM, &led) < 0) |
246 | DPRINTF(("status query error\n")); |
247 | if (led == OAK_LED_OFF0x0) |
248 | (void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_ON0x1); |
249 | else |
250 | (void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_OFF0x0); |
251 | |
252 | uoak_sensor_refresh(&sc->sc_sensor.lux, 1000000, 0); |
253 | } |
254 | |
255 | int |
256 | uoaklux_get_sensor_setting(struct uoaklux_softc *sc, enum uoak_target target) |
257 | { |
258 | struct uoak_softc *scc = &sc->sc_uoak_softc; |
259 | uint8_t result; |
260 | |
261 | memset(&scc->sc_rcmd, 0, sizeof(struct uoak_rcmd))__builtin_memset((&scc->sc_rcmd), (0), (sizeof(struct uoak_rcmd ))); |
262 | scc->sc_rcmd.target = target; |
263 | scc->sc_rcmd.datasize = 0x1; |
264 | USETW(&scc->sc_rcmd.cmd, OAK_CMD_SENSORSETTING)(*(u_int16_t *)(&scc->sc_rcmd.cmd) = (0x0002)); |
265 | |
266 | if (uoak_get_cmd(scc) < 0) |
267 | return EIO5; |
268 | |
269 | result = scc->sc_buf[1]; |
270 | |
271 | sc->sc_sensor.gain = ((result & OAK_LUX_SENSOR_GAIN_MASK(0x1 << 4)) >> 3); |
272 | sc->sc_sensor.inttime = (result & OAK_LUX_SENSOR_INTTIME_MASK0x3); |
273 | |
274 | return 0; |
275 | } |
276 | |
277 | /* device specific functions */ |
278 | void |
279 | uoaklux_dev_setting(void *parent, enum uoak_target target) |
280 | { |
281 | struct uoaklux_softc *sc = (struct uoaklux_softc *)parent; |
282 | |
283 | /* get device specific configuration */ |
284 | (void)uoaklux_get_sensor_setting(sc, target); |
285 | } |
286 | |
287 | void |
288 | uoaklux_dev_print(void *parent, enum uoak_target target) |
289 | { |
290 | struct uoaklux_softc *sc = (struct uoaklux_softc *)parent; |
291 | |
292 | printf(", %s gain", (sc->sc_sensor.gain ? "HIGH" : "LOW")); |
293 | printf(", speed "); |
294 | switch(sc->sc_sensor.inttime) { |
295 | case OAK_LUX_SENSOR_INTTIME_13_7ms0x0: |
296 | printf("13.7ms"); |
297 | break; |
298 | case OAK_LUX_SENSOR_INTTIME_101ms0x1: |
299 | printf("101ms"); |
300 | break; |
301 | case OAK_LUX_SENSOR_INTTIME_402ms0x2: |
302 | printf("402ms"); |
303 | break; |
304 | default: |
305 | printf("unknown"); |
306 | break; |
307 | } |
308 | } |