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/* $OpenBSD: uoaklux.c,v 1.12 2016/01/09 04:14:42 jcs Exp $ */
/*
* Copyright (c) 2012 Yojiro UO <yuo@nui.org>
*
* 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.
*/
/* TORADEX OAK seriese sensors: lux sensor driver */
/* http://developer.toradex.com/files/toradex-dev/uploads/media/Oak/Oak_ProgrammingGuide.pdf */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/sensors.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/uhidev.h>
#include "uoak.h"
#ifdef UOAKLUX_DEBUG
int uoakluxdebug = 0;
#define DPRINTFN(n, x) do { if (uoakluxdebug > (n)) printf x; } while (0)
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
#define UOAKLUX_SAMPLE_RATE 200 /* ms */
#define UOAKLUX_REFRESH_PERIOD 5 /* 5 sec : 0.2Hz */
struct uoaklux_sensor {
struct uoak_sensor lux;
/* lux sensor setting */
uint8_t gain;
int inttime;
};
struct uoaklux_softc {
struct uhidev sc_hdev;
/* uoak common */
struct uoak_softc sc_uoak_softc;
/* sensor framework */
struct uoaklux_sensor sc_sensor;
struct ksensordev sc_sensordev;
struct sensor_task *sc_sensortask;
};
const struct usb_devno uoaklux_devs[] = {
{ USB_VENDOR_TORADEX, USB_PRODUCT_TORADEX_LUX},
};
#define uoaklux_lookup(v, p) usb_lookup(uoaklux_devs, v, p)
int uoaklux_match(struct device *, void *, void *);
void uoaklux_attach(struct device *, struct device *, void *);
int uoaklux_detach(struct device *, int);
void uoaklux_intr(struct uhidev *, void *, u_int);
void uoaklux_refresh(void *);
int uoaklux_get_sensor_setting(struct uoaklux_softc *, enum uoak_target);
void uoaklux_dev_setting(void *, enum uoak_target);
void uoaklux_dev_print(void *, enum uoak_target);
struct cfdriver uoaklux_cd = {
NULL, "uoaklux", DV_DULL
};
const struct cfattach uoaklux_ca = {
sizeof(struct uoaklux_softc),
uoaklux_match,
uoaklux_attach,
uoaklux_detach,
};
struct uoak_methods uoaklux_methods = {
uoaklux_dev_print,
uoaklux_dev_setting
};
int
uoaklux_match(struct device *parent, void *match, void *aux)
{
struct uhidev_attach_arg *uha = aux;
if (uha->reportid == UHIDEV_CLAIM_ALLREPORTID)
return (UMATCH_NONE);
if (uoaklux_lookup(uha->uaa->vendor, uha->uaa->product) == NULL)
return UMATCH_NONE;
return (UMATCH_VENDOR_PRODUCT);
}
void
uoaklux_attach(struct device *parent, struct device *self, void *aux)
{
struct uoaklux_softc *sc = (struct uoaklux_softc *)self;
struct usb_attach_arg *uaa = aux;
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)uaa;
struct usbd_device *dev = uha->parent->sc_udev;
struct uoak_softc *scc = &sc->sc_uoak_softc;
int err, size, repid;
void *desc;
sc->sc_hdev.sc_intr = uoaklux_intr;
sc->sc_hdev.sc_parent = uha->parent;
sc->sc_hdev.sc_report_id = uha->reportid;
scc->sc_parent = sc;
scc->sc_udev = dev;
scc->sc_hdev = &sc->sc_hdev;
scc->sc_methods = &uoaklux_methods;
scc->sc_sensordev = &sc->sc_sensordev;
uhidev_get_report_desc(uha->parent, &desc, &size);
repid = uha->reportid;
scc->sc_ilen = hid_report_size(desc, size, hid_input, repid);
scc->sc_olen = hid_report_size(desc, size, hid_output, repid);
scc->sc_flen = hid_report_size(desc, size, hid_feature, repid);
/*device initialize */
(void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_ON);
err = uoak_set_sample_rate(scc, OAK_TARGET_RAM, UOAKLUX_SAMPLE_RATE);
if (err) {
printf("%s: could not set sampling rate. exit\n",
sc->sc_hdev.sc_dev.dv_xname);
return;
}
/* query and print device setting */
uoak_get_devinfo(scc);
uoak_print_devinfo(scc);
DPRINTF((" config in RAM\n"));
uoak_get_setting(scc, OAK_TARGET_RAM);
uoak_print_setting(scc, OAK_TARGET_RAM);
#ifdef UOAKLUX_DEBUG
DPRINTF((" config in FLASh\n"));
uoak_get_setting(scc, OAK_TARGET_FLASH);
uoak_print_setting(scc, OAK_TARGET_FLASH);
#endif
/* attach sensor */
strlcpy(sc->sc_sensordev.xname, sc->sc_hdev.sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
uoak_sensor_attach(scc, &sc->sc_sensor.lux, SENSOR_LUX);
/* start sensor */
sc->sc_sensortask = sensor_task_register(sc, uoaklux_refresh,
UOAKLUX_REFRESH_PERIOD);
if (sc->sc_sensortask == NULL) {
printf(", unable to register update task\n");
return;
}
sensordev_install(&sc->sc_sensordev);
err = uhidev_open(&sc->sc_hdev);
if (err) {
printf("%s: could not open interrupt pipe, quit\n",
sc->sc_hdev.sc_dev.dv_xname);
return;
}
scc->sc_ibuf = malloc(scc->sc_ilen, M_USBDEV, M_WAITOK);
DPRINTF(("uoaklux_attach: complete\n"));
}
int
uoaklux_detach(struct device *self, int flags)
{
struct uoaklux_softc *sc = (struct uoaklux_softc *)self;
struct uoak_softc *scc = &sc->sc_uoak_softc;
int rv = 0;
wakeup(&sc->sc_sensortask);
sensordev_deinstall(&sc->sc_sensordev);
uoak_sensor_detach(scc, &sc->sc_sensor.lux);
if (sc->sc_sensortask != NULL)
sensor_task_unregister(sc->sc_sensortask);
if (sc->sc_hdev.sc_state & UHIDEV_OPEN)
uhidev_close(&sc->sc_hdev);
if (scc->sc_ibuf != NULL) {
free(scc->sc_ibuf, M_USBDEV, 0);
scc->sc_ibuf = NULL;
}
return (rv);
}
void
uoaklux_intr(struct uhidev *addr, void *ibuf, u_int len)
{
struct uoaklux_softc *sc = (struct uoaklux_softc *)addr;
struct uoak_softc *scc = &sc->sc_uoak_softc;
int frame, val;
if (scc->sc_ibuf == NULL)
return;
memcpy(scc->sc_ibuf, ibuf, len);
frame = (scc->sc_ibuf[1] << 8) + (scc->sc_ibuf[0]);
val = (scc->sc_ibuf[3] << 8) + (scc->sc_ibuf[2]);
uoak_sensor_update(&sc->sc_sensor.lux, val);
}
void
uoaklux_refresh(void *arg)
{
struct uoaklux_softc *sc = arg;
struct uoak_softc *scc = &sc->sc_uoak_softc;
uint8_t led;
/* blink LED for each cycle */
if (uoak_led_status(scc, OAK_TARGET_RAM, &led) < 0)
DPRINTF(("status query error\n"));
if (led == OAK_LED_OFF)
(void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_ON);
else
(void)uoak_led_ctrl(scc, OAK_TARGET_RAM, OAK_LED_OFF);
uoak_sensor_refresh(&sc->sc_sensor.lux, 1000000, 0);
}
int
uoaklux_get_sensor_setting(struct uoaklux_softc *sc, enum uoak_target target)
{
struct uoak_softc *scc = &sc->sc_uoak_softc;
uint8_t result;
memset(&scc->sc_rcmd, 0, sizeof(struct uoak_rcmd));
scc->sc_rcmd.target = target;
scc->sc_rcmd.datasize = 0x1;
USETW(&scc->sc_rcmd.cmd, OAK_CMD_SENSORSETTING);
if (uoak_get_cmd(scc) < 0)
return EIO;
result = scc->sc_buf[1];
sc->sc_sensor.gain = ((result & OAK_LUX_SENSOR_GAIN_MASK) >> 3);
sc->sc_sensor.inttime = (result & OAK_LUX_SENSOR_INTTIME_MASK);
return 0;
}
/* device specific functions */
void
uoaklux_dev_setting(void *parent, enum uoak_target target)
{
struct uoaklux_softc *sc = (struct uoaklux_softc *)parent;
/* get device specific configuration */
(void)uoaklux_get_sensor_setting(sc, target);
}
void
uoaklux_dev_print(void *parent, enum uoak_target target)
{
struct uoaklux_softc *sc = (struct uoaklux_softc *)parent;
printf(", %s gain", (sc->sc_sensor.gain ? "HIGH" : "LOW"));
printf(", speed ");
switch(sc->sc_sensor.inttime) {
case OAK_LUX_SENSOR_INTTIME_13_7ms:
printf("13.7ms");
break;
case OAK_LUX_SENSOR_INTTIME_101ms:
printf("101ms");
break;
case OAK_LUX_SENSOR_INTTIME_402ms:
printf("402ms");
break;
default:
printf("unknown");
break;
}
}
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