/* $OpenBSD: ugold.c,v 1.7 2014/12/11 18:39:27 mpi Exp $ */ /* * Copyright (c) 2013 Takayoshi SASANO * Copyright (c) 2013 Martin Pieuchot * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* Driver for Microdia's HID base TEMPer Temperature sensor */ #include #include #include #include #include #include #include #include #include #include #include #include #define UGOLD_INNER 0 #define UGOLD_OUTER 1 #define UGOLD_MAX_SENSORS 2 #define UGOLD_CMD_DATA 0x80 #define UGOLD_CMD_INIT 0x82 /* * This driver only uses two of the three known commands for the * TEMPerV1.2 device. * * The first byte of the answer corresponds to the command and the * second one seems to be the size (in bytes) of the answer. * * The device always sends 8 bytes and if the length of the answer * is less than that, it just leaves the last bytes untouched. That * is why most of the time the last n bytes of the answers are the * same. * * The third command below seems to generate two answers with a * string corresponding to the device, for example: * 'TEMPer1F' and '1.1Per1F' (here Per1F is repeated). */ static uint8_t cmd_data[8] = { 0x01, 0x80, 0x33, 0x01, 0x00, 0x00, 0x00, 0x00 }; static uint8_t cmd_init[8] = { 0x01, 0x82, 0x77, 0x01, 0x00, 0x00, 0x00, 0x00 }; #if 0 static uint8_t cmd_type[8] = { 0x01, 0x86, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00 }; #endif struct ugold_softc { struct uhidev sc_hdev; struct usbd_device *sc_udev; int sc_num_sensors; struct ksensor sc_sensor[UGOLD_MAX_SENSORS]; struct ksensordev sc_sensordev; struct sensor_task *sc_sensortask; }; const struct usb_devno ugold_devs[] = { { USB_VENDOR_MICRODIA, USB_PRODUCT_MICRODIA_TEMPER }, }; int ugold_match(struct device *, void *, void *); void ugold_attach(struct device *, struct device *, void *); int ugold_detach(struct device *, int); void ugold_intr(struct uhidev *, void *, u_int); void ugold_refresh(void *); int ugold_issue_cmd(struct ugold_softc *, uint8_t *, int); struct cfdriver ugold_cd = { NULL, "ugold", DV_DULL }; const struct cfattach ugold_ca = { sizeof(struct ugold_softc), ugold_match, ugold_attach, ugold_detach, }; int ugold_match(struct device *parent, void *match, void *aux) { struct uhidev_attach_arg *uha = aux; int size; void *desc; if (uha->reportid == UHIDEV_CLAIM_ALLREPORTID) return (UMATCH_NONE); if (usb_lookup(ugold_devs, uha->uaa->vendor, uha->uaa->product) == NULL) return (UMATCH_NONE); /* * XXX Only match the sensor interface. * * Does it makes sense to attach various uhidev(4) to these * non-standard HID devices? */ uhidev_get_report_desc(uha->parent, &desc, &size); if (hid_is_collection(desc, size, uha->reportid, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_KEYBOARD))) return (UMATCH_NONE); return (UMATCH_VENDOR_PRODUCT); } void ugold_attach(struct device *parent, struct device *self, void *aux) { struct ugold_softc *sc = (struct ugold_softc *)self; struct uhidev_attach_arg *uha = aux; int size, repid; void *desc; sc->sc_udev = uha->parent->sc_udev; sc->sc_hdev.sc_intr = ugold_intr; sc->sc_hdev.sc_parent = uha->parent; sc->sc_hdev.sc_report_id = uha->reportid; uhidev_get_report_desc(uha->parent, &desc, &size); repid = uha->reportid; sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid); sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid); sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid); if (uhidev_open(&sc->sc_hdev)) { printf(", unable to open interrupt pipe\n"); return; } strlcpy(sc->sc_sensordev.xname, sc->sc_hdev.sc_dev.dv_xname, sizeof(sc->sc_sensordev.xname)); sc->sc_sensor[UGOLD_OUTER].type = SENSOR_TEMP; strlcpy(sc->sc_sensor[UGOLD_OUTER].desc, "outer", sizeof(sc->sc_sensor[UGOLD_OUTER].desc)); sc->sc_sensor[UGOLD_INNER].type = SENSOR_TEMP; strlcpy(sc->sc_sensor[UGOLD_INNER].desc, "inner", sizeof(sc->sc_sensor[UGOLD_INNER].desc)); /* 0.1Hz */ sc->sc_sensortask = sensor_task_register(sc, ugold_refresh, 6); if (sc->sc_sensortask == NULL) { printf(", unable to register update task\n"); return; } printf("\n"); sensordev_install(&sc->sc_sensordev); } int ugold_detach(struct device *self, int flags) { struct ugold_softc *sc = (struct ugold_softc *)self; int i; if (sc->sc_sensortask != NULL) { sensor_task_unregister(sc->sc_sensortask); sensordev_deinstall(&sc->sc_sensordev); } for (i = 0; i < sc->sc_num_sensors; i++) sensor_detach(&sc->sc_sensordev, &sc->sc_sensor[i]); if (sc->sc_hdev.sc_state & UHIDEV_OPEN) uhidev_close(&sc->sc_hdev); return (0); } static int ugold_ds75_temp(uint8_t msb, uint8_t lsb) { /* DS75: 12bit precision mode : 0.0625 degrees Celsius ticks */ return (((msb * 100) + ((lsb >> 4) * 25 / 4)) * 10000) + 273150000; } void ugold_intr(struct uhidev *addr, void *ibuf, u_int len) { struct ugold_softc *sc = (struct ugold_softc *)addr; uint8_t *buf = ibuf; int i, temp; switch (buf[0]) { case UGOLD_CMD_INIT: if (sc->sc_num_sensors) break; sc->sc_num_sensors = min(buf[1], UGOLD_MAX_SENSORS) /* XXX */; for (i = 0; i < sc->sc_num_sensors; i++) { sc->sc_sensor[i].flags |= SENSOR_FINVALID; sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]); } printf("%s: %d sensor%s type ds75/12bit (temperature)\n", sc->sc_hdev.sc_dev.dv_xname, sc->sc_num_sensors, (sc->sc_num_sensors == 1) ? "" : "s"); break; case UGOLD_CMD_DATA: switch (buf[1]) { case 4: temp = ugold_ds75_temp(buf[4], buf[5]); sc->sc_sensor[UGOLD_OUTER].value = temp; sc->sc_sensor[UGOLD_OUTER].flags &= ~SENSOR_FINVALID; /* FALLTHROUGH */ case 2: temp = ugold_ds75_temp(buf[2], buf[3]); sc->sc_sensor[UGOLD_INNER].value = temp; sc->sc_sensor[UGOLD_INNER].flags &= ~SENSOR_FINVALID; break; default: printf("%s: invalid data length (%d bytes)\n", sc->sc_hdev.sc_dev.dv_xname, buf[1]); } break; default: printf("%s: unknown command 0x%02x\n", sc->sc_hdev.sc_dev.dv_xname, buf[0]); } } void ugold_refresh(void *arg) { struct ugold_softc *sc = arg; int i; if (sc->sc_num_sensors == 0) ugold_issue_cmd(sc, cmd_init, sizeof(cmd_init)); if (ugold_issue_cmd(sc, cmd_data, sizeof(cmd_data))) { for (i = 0; i < sc->sc_num_sensors; i++) sc->sc_sensor[i].flags |= SENSOR_FINVALID; } } int ugold_issue_cmd(struct ugold_softc *sc, uint8_t *cmd, int len) { int actlen; actlen = uhidev_set_report_async(sc->sc_hdev.sc_parent, UHID_OUTPUT_REPORT, sc->sc_hdev.sc_report_id, cmd, len); return (actlen != len); }