]> sigrok.org Git - libsigrok.git/blobdiff - hardware/hantek-dso/api.c
build: Portability fixes.
[libsigrok.git] / hardware / hantek-dso / api.c
index 01a080017e2eae8339a828e0c295e97adf3467d1..c948e4216a8260ea591f207a5ebaf9d62feeb375 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
  *
  * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
  *
 /* TODO tune this properly */
 #define TICK 1
 
-static const int hwcaps[] = {
-       SR_HWCAP_OSCILLOSCOPE,
-       SR_HWCAP_LIMIT_SAMPLES,
-       SR_HWCAP_CONTINUOUS,
-       SR_HWCAP_TIMEBASE,
-       SR_HWCAP_BUFFERSIZE,
-       SR_HWCAP_TRIGGER_SOURCE,
-       SR_HWCAP_TRIGGER_SLOPE,
-       SR_HWCAP_HORIZ_TRIGGERPOS,
-       SR_HWCAP_FILTER,
-       SR_HWCAP_VDIV,
-       SR_HWCAP_COUPLING,
-       0,
+#define NUM_TIMEBASE  10
+#define NUM_VDIV      8
+
+static const int32_t scanopts[] = {
+       SR_CONF_CONN,
 };
 
-static const char *probe_names[] = {
-       "CH1",
-       "CH2",
+static const int32_t devopts[] = {
+       SR_CONF_OSCILLOSCOPE,
+       SR_CONF_LIMIT_FRAMES,
+       SR_CONF_CONTINUOUS,
+       SR_CONF_TIMEBASE,
+       SR_CONF_BUFFERSIZE,
+       SR_CONF_TRIGGER_SOURCE,
+       SR_CONF_TRIGGER_SLOPE,
+       SR_CONF_HORIZ_TRIGGERPOS,
+       SR_CONF_FILTER,
+       SR_CONF_VDIV,
+       SR_CONF_COUPLING,
+       SR_CONF_NUM_TIMEBASE,
+       SR_CONF_NUM_VDIV,
+};
+
+static const char *channel_names[] = {
+       "CH1", "CH2",
        NULL,
 };
 
+static const uint64_t buffersizes_32k[] = {
+       10240, 32768,
+};
+static const uint64_t buffersizes_512k[] = {
+       10240, 524288,
+};
+static const uint64_t buffersizes_14k[] = {
+       10240, 14336,
+};
+
 static const struct dso_profile dev_profiles[] = {
        {       0x04b4, 0x2090, 0x04b5, 0x2090,
                "Hantek", "DSO-2090",
-               FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
+               buffersizes_32k,
+               FIRMWARE_DIR "/hantek-dso-2090.fw" },
        {       0x04b4, 0x2150, 0x04b5, 0x2150,
                "Hantek", "DSO-2150",
-               FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
+               buffersizes_32k,
+               FIRMWARE_DIR "/hantek-dso-2150.fw" },
        {       0x04b4, 0x2250, 0x04b5, 0x2250,
                "Hantek", "DSO-2250",
-               FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
+               buffersizes_512k,
+               FIRMWARE_DIR "/hantek-dso-2250.fw" },
        {       0x04b4, 0x5200, 0x04b5, 0x5200,
                "Hantek", "DSO-5200",
-               FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
+               buffersizes_14k,
+               FIRMWARE_DIR "/hantek-dso-5200.fw" },
        {       0x04b4, 0x520a, 0x04b5, 0x520a,
                "Hantek", "DSO-5200A",
-               FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
-       { 0, 0, 0, 0, 0, 0, 0 },
+               buffersizes_512k,
+               FIRMWARE_DIR "/hantek-dso-5200A.fw" },
+       { 0, 0, 0, 0, 0, 0, 0, 0 },
 };
 
-static const uint64_t buffersizes[] = {
-       10240,
-       32768,
-       /* TODO: 65535 */
-       0,
-};
-
-static const struct sr_rational timebases[] = {
+static const uint64_t timebases[][2] = {
        /* microseconds */
        { 10, 1000000 },
        { 20, 1000000 },
@@ -102,10 +117,9 @@ static const struct sr_rational timebases[] = {
        { 100, 1000 },
        { 200, 1000 },
        { 400, 1000 },
-       { 0, 0},
 };
 
-static const struct sr_rational vdivs[] = {
+static const uint64_t vdivs[][2] = {
        /* millivolts */
        { 10, 1000 },
        { 20, 1000 },
@@ -117,7 +131,6 @@ static const struct sr_rational vdivs[] = {
        { 1, 1 },
        { 2, 1 },
        { 5, 1 },
-       { 0, 0 },
 };
 
 static const char *trigger_sources[] = {
@@ -125,32 +138,29 @@ static const char *trigger_sources[] = {
        "CH2",
        "EXT",
        /* TODO: forced */
-       NULL,
 };
 
 static const char *filter_targets[] = {
        "CH1",
        "CH2",
        /* TODO: "TRIGGER", */
-       NULL,
 };
 
 static const char *coupling[] = {
        "AC",
        "DC",
        "GND",
-       NULL,
 };
 
 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
-static struct sr_dev_driver *hdi = &hantek_dso_driver_info;
+static struct sr_dev_driver *di = &hantek_dso_driver_info;
 
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
 
 static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
 {
        struct sr_dev_inst *sdi;
-       struct sr_probe *probe;
+       struct sr_channel *ch;
        struct drv_context *drvc;
        struct dev_context *devc;
        int i;
@@ -159,17 +169,17 @@ static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof
                prof->vendor, prof->model, NULL);
        if (!sdi)
                return NULL;
-       sdi->driver = hdi;
+       sdi->driver = di;
 
        /*
-        * Add only the real probes -- EXT isn't a source of data, only
+        * Add only the real channels -- EXT isn't a source of data, only
         * a trigger source internal to the device.
         */
-       for (i = 0; probe_names[i]; i++) {
-               if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
-                               probe_names[i])))
+       for (i = 0; channel_names[i]; i++) {
+               if (!(ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE,
+                               channel_names[i])))
                        return NULL;
-               sdi->probes = g_slist_append(sdi->probes, probe);
+               sdi->channels = g_slist_append(sdi->channels, ch);
        }
 
        if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
@@ -194,106 +204,108 @@ static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof
        devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
        devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
        sdi->priv = devc;
-       drvc = hdi->priv;
+       drvc = di->priv;
        drvc->instances = g_slist_append(drvc->instances, sdi);
 
        return sdi;
 }
 
-static int configure_probes(const struct sr_dev_inst *sdi)
+static int configure_channels(const struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
-       const struct sr_probe *probe;
+       struct sr_channel *ch;
        const GSList *l;
+       int p;
 
        devc = sdi->priv;
 
+       g_slist_free(devc->enabled_channels);
        devc->ch1_enabled = devc->ch2_enabled = FALSE;
-       for (l = sdi->probes; l; l = l->next) {
-               probe = (struct sr_probe *)l->data;
-               if (probe->index == 0)
-                       devc->ch1_enabled = probe->enabled;
-               else if (probe->index == 1)
-                       devc->ch2_enabled = probe->enabled;
+       for (l = sdi->channels, p = 0; l; l = l->next, p++) {
+               ch = l->data;
+               if (p == 0)
+                       devc->ch1_enabled = ch->enabled;
+               else
+                       devc->ch2_enabled = ch->enabled;
+               if (ch->enabled)
+                       devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
        }
 
        return SR_OK;
 }
 
-/* Properly close and free all devices. */
-static int clear_instances(void)
+static void clear_dev_context(void *priv)
 {
-       struct sr_dev_inst *sdi;
-       struct drv_context *drvc;
        struct dev_context *devc;
-       GSList *l;
-
-       drvc = hdi->priv;
-       for (l = drvc->instances; l; l = l->next) {
-               if (!(sdi = l->data)) {
-                       /* Log error, but continue cleaning up the rest. */
-                       sr_err("%s: sdi was NULL, continuing", __func__);
-                       continue;
-               }
-               if (!(devc = sdi->priv)) {
-                       /* Log error, but continue cleaning up the rest. */
-                       sr_err("%s: sdi->priv was NULL, continuing", __func__);
-                       continue;
-               }
-               dso_close(sdi);
-               sr_usb_dev_inst_free(devc->usb);
-               g_free(devc->triggersource);
-
-               sr_dev_inst_free(sdi);
-       }
 
-       g_slist_free(drvc->instances);
-       drvc->instances = NULL;
+       devc = priv;
+       g_free(devc->triggersource);
+       g_slist_free(devc->enabled_channels);
 
-       return SR_OK;
 }
 
-static int hw_init(struct sr_context *sr_ctx)
+static int dev_clear(void)
 {
-       struct drv_context *drvc;
-
-       if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
-               sr_err("Driver context malloc failed.");
-               return SR_ERR_MALLOC;
-       }
-
-       drvc->sr_ctx = sr_ctx;
-       hdi->priv = drvc;
+       return std_dev_clear(di, clear_dev_context);
+}
 
-       return SR_OK;
+static int init(struct sr_context *sr_ctx)
+{
+       return std_init(sr_ctx, di, LOG_PREFIX);
 }
 
-static GSList *hw_scan(GSList *options)
+static GSList *scan(GSList *options)
 {
-       struct sr_dev_inst *sdi;
-       const struct dso_profile *prof;
        struct drv_context *drvc;
        struct dev_context *devc;
-       GSList *devices;
+       struct sr_dev_inst *sdi;
+       struct sr_usb_dev_inst *usb;
+       struct sr_config *src;
+       const struct dso_profile *prof;
+       GSList *l, *devices, *conn_devices;
        struct libusb_device_descriptor des;
        libusb_device **devlist;
        int devcnt, ret, i, j;
+       const char *conn;
 
-       (void)options;
+       drvc = di->priv;
 
        devcnt = 0;
        devices = 0;
-       drvc = hdi->priv;
-       drvc->instances = NULL;
 
-       clear_instances();
+       conn = NULL;
+       for (l = options; l; l = l->next) {
+               src = l->data;
+               if (src->key == SR_CONF_CONN) {
+                       conn = g_variant_get_string(src->data, NULL);
+                       break;
+               }
+       }
+       if (conn)
+               conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
+       else
+               conn_devices = NULL;
 
        /* Find all Hantek DSO devices and upload firmware to all of them. */
        libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
        for (i = 0; devlist[i]; i++) {
+               if (conn) {
+                       usb = NULL;
+                       for (l = conn_devices; l; l = l->next) {
+                               usb = l->data;
+                               if (usb->bus == libusb_get_bus_number(devlist[i])
+                                       && usb->address == libusb_get_device_address(devlist[i]))
+                                       break;
+                       }
+                       if (!l)
+                               /* This device matched none of the ones that
+                                * matched the conn specification. */
+                               continue;
+               }
+
                if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
                        sr_err("Failed to get device descriptor: %s.",
-                              libusb_error_name(ret));
+                                       libusb_error_name(ret));
                        continue;
                }
 
@@ -313,9 +325,9 @@ static GSList *hw_scan(GSList *options)
                                        devc->fw_updated = g_get_monotonic_time();
                                else
                                        sr_err("Firmware upload failed for "
-                                              "device %d.", devcnt);
+                                               "device %d.", devcnt);
                                /* Dummy USB address of 0xff will get overwritten later. */
-                               devc->usb = sr_usb_dev_inst_new(
+                               sdi->conn = sr_usb_dev_inst_new(
                                                libusb_get_bus_number(devlist[i]), 0xff, NULL);
                                devcnt++;
                                break;
@@ -328,7 +340,8 @@ static GSList *hw_scan(GSList *options)
                                sdi->status = SR_ST_INACTIVE;
                                devices = g_slist_append(devices, sdi);
                                devc = sdi->priv;
-                               devc->usb = sr_usb_dev_inst_new(
+                               sdi->inst_type = SR_INST_USB;
+                               sdi->conn = sr_usb_dev_inst_new(
                                                libusb_get_bus_number(devlist[i]),
                                                libusb_get_device_address(devlist[i]), NULL);
                                devcnt++;
@@ -344,22 +357,20 @@ static GSList *hw_scan(GSList *options)
        return devices;
 }
 
-static GSList *hw_dev_list(void)
+static GSList *dev_list(void)
 {
-       struct drv_context *drvc;
-
-       drvc = hdi->priv;
-
-       return drvc->instances;
+       return ((struct drv_context *)(di->priv))->instances;
 }
 
-static int hw_dev_open(struct sr_dev_inst *sdi)
+static int dev_open(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
+       struct sr_usb_dev_inst *usb;
        int64_t timediff_us, timediff_ms;
        int err;
 
        devc = sdi->priv;
+       usb = sdi->conn;
 
        /*
         * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
@@ -389,150 +400,138 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
                return SR_ERR;
        }
 
-       err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
+       err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
        if (err != 0) {
                sr_err("Unable to claim interface: %s.",
-                      libusb_error_name(err));
+                          libusb_error_name(err));
                return SR_ERR;
        }
 
        return SR_OK;
 }
 
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int dev_close(struct sr_dev_inst *sdi)
 {
        dso_close(sdi);
 
        return SR_OK;
 }
 
-static int hw_cleanup(void)
+static int cleanup(void)
 {
-       struct drv_context *drvc;
-
-       if (!(drvc = hdi->priv))
-               return SR_OK;
-
-       clear_instances();
-
-       return SR_OK;
+       return dev_clear();
 }
 
-static int hw_info_get(int info_id, const void **data,
-                      const struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
 {
-       uint64_t tmp;
-
-       (void)sdi;
-
-       switch (info_id) {
-       case SR_DI_HWCAPS:
-               *data = hwcaps;
-               break;
-       case SR_DI_NUM_PROBES:
-               *data = GINT_TO_POINTER(NUM_PROBES);
-               break;
-       case SR_DI_PROBE_NAMES:
-               *data = probe_names;
-               break;
-       case SR_DI_BUFFERSIZES:
-               *data = buffersizes;
-               break;
-       case SR_DI_TIMEBASES:
-               *data = timebases;
-               break;
-       case SR_DI_TRIGGER_SOURCES:
-               *data = trigger_sources;
+       struct sr_usb_dev_inst *usb;
+       char str[128];
+
+       (void)cg;
+
+       switch (id) {
+       case SR_CONF_CONN:
+               if (!sdi || !sdi->conn)
+                       return SR_ERR_ARG;
+               usb = sdi->conn;
+               if (usb->address == 255)
+                       /* Device still needs to re-enumerate after firmware
+                        * upload, so we don't know its (future) address. */
+                       return SR_ERR;
+               snprintf(str, 128, "%d.%d", usb->bus, usb->address);
+               *data = g_variant_new_string(str);
                break;
-       case SR_DI_FILTERS:
-               *data = filter_targets;
+       case SR_CONF_NUM_TIMEBASE:
+               *data = g_variant_new_int32(NUM_TIMEBASE);
                break;
-       case SR_DI_VDIVS:
-               *data = vdivs;
-               break;
-       case SR_DI_COUPLING:
-               *data = coupling;
-               break;
-       /* TODO remove this */
-       case SR_DI_CUR_SAMPLERATE:
-               *data = &tmp;
+       case SR_CONF_NUM_VDIV:
+               *data = g_variant_new_int32(NUM_VDIV);
                break;
        default:
-               return SR_ERR_ARG;
+               return SR_ERR_NA;
        }
 
        return SR_OK;
 }
 
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
-                            const void *value)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
-       struct sr_rational tmp_rat;
-       float tmp_float;
-       uint64_t tmp_u64;
-       int ret, i;
+       double tmp_double;
+       uint64_t tmp_u64, p, q;
+       int tmp_int, ret;
+       unsigned int i;
+       const char *tmp_str;
        char **targets;
 
+       (void)cg;
+
        if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR;
+               return SR_ERR_DEV_CLOSED;
 
        ret = SR_OK;
        devc = sdi->priv;
-       switch (hwcap) {
-       case SR_HWCAP_LIMIT_FRAMES:
-               devc->limit_frames = *(const uint64_t *)value;
+       switch (id) {
+       case SR_CONF_LIMIT_FRAMES:
+               devc->limit_frames = g_variant_get_uint64(data);
                break;
-       case SR_HWCAP_TRIGGER_SLOPE:
-               tmp_u64 = *(const int *)value;
-               if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE)
-                       ret = SR_ERR_ARG;
-               devc->triggerslope = tmp_u64;
+       case SR_CONF_TRIGGER_SLOPE:
+               tmp_str = g_variant_get_string(data, NULL);
+               if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
+                       return SR_ERR_ARG;
+               devc->triggerslope = (tmp_str[0] == 'r')
+                       ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
                break;
-       case SR_HWCAP_HORIZ_TRIGGERPOS:
-               tmp_float = *(const float *)value;
-               if (tmp_float < 0.0 || tmp_float > 1.0) {
+       case SR_CONF_HORIZ_TRIGGERPOS:
+               tmp_double = g_variant_get_double(data);
+               if (tmp_double < 0.0 || tmp_double > 1.0) {
                        sr_err("Trigger position should be between 0.0 and 1.0.");
                        ret = SR_ERR_ARG;
                } else
-                       devc->triggerposition = tmp_float;
+                       devc->triggerposition = tmp_double;
                break;
-       case SR_HWCAP_BUFFERSIZE:
-               tmp_u64 = *(const int *)value;
-               for (i = 0; buffersizes[i]; i++) {
-                       if (buffersizes[i] == tmp_u64) {
+       case SR_CONF_BUFFERSIZE:
+               tmp_u64 = g_variant_get_uint64(data);
+               for (i = 0; i < 2; i++) {
+                       if (devc->profile->buffersizes[i] == tmp_u64) {
                                devc->framesize = tmp_u64;
                                break;
                        }
                }
-               if (buffersizes[i] == 0)
+               if (i == 2)
                        ret = SR_ERR_ARG;
                break;
-       case SR_HWCAP_TIMEBASE:
-               tmp_rat = *(const struct sr_rational *)value;
-               for (i = 0; timebases[i].p && timebases[i].q; i++) {
-                       if (timebases[i].p == tmp_rat.p
-                                       && timebases[i].q == tmp_rat.q) {
-                               devc->timebase = i;
+       case SR_CONF_TIMEBASE:
+               g_variant_get(data, "(tt)", &p, &q);
+               tmp_int = -1;
+               for (i = 0; i < ARRAY_SIZE(timebases); i++) {
+                       if (timebases[i][0] == p && timebases[i][1] == q) {
+                               tmp_int = i;
                                break;
                        }
                }
-               if (timebases[i].p == 0 && timebases[i].q == 0)
+               if (tmp_int >= 0)
+                       devc->timebase = tmp_int;
+               else
                        ret = SR_ERR_ARG;
                break;
-       case SR_HWCAP_TRIGGER_SOURCE:
+       case SR_CONF_TRIGGER_SOURCE:
+               tmp_str = g_variant_get_string(data, NULL);
                for (i = 0; trigger_sources[i]; i++) {
-                       if (!strcmp(value, trigger_sources[i])) {
-                               devc->triggersource = g_strdup(value);
+                       if (!strcmp(tmp_str, trigger_sources[i])) {
+                               devc->triggersource = g_strdup(tmp_str);
                                break;
                        }
                }
                if (trigger_sources[i] == 0)
                        ret = SR_ERR_ARG;
                break;
-       case SR_HWCAP_FILTER:
+       case SR_CONF_FILTER:
+               tmp_str = g_variant_get_string(data, NULL);
                devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0;
-               targets = g_strsplit(value, ",", 0);
+               targets = g_strsplit(tmp_str, ",", 0);
                for (i = 0; targets[i]; i++) {
                        if (targets[i] == '\0')
                                /* Empty filter string can be used to clear them all. */
@@ -550,24 +549,27 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
                }
                g_strfreev(targets);
                break;
-       case SR_HWCAP_VDIV:
+       case SR_CONF_VDIV:
                /* TODO: Not supporting vdiv per channel yet. */
-               tmp_rat = *(const struct sr_rational *)value;
-               for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
-                       if (vdivs[i].p == tmp_rat.p
-                                       && vdivs[i].q == tmp_rat.q) {
-                               devc->voltage_ch1 = i;
-                               devc->voltage_ch2 = i;
+               g_variant_get(data, "(tt)", &p, &q);
+               tmp_int = -1;
+               for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
+                       if (vdivs[i][0] == p && vdivs[i][1] == q) {
+                               tmp_int = i;
                                break;
                        }
                }
-               if (vdivs[i].p == 0 && vdivs[i].q == 0)
+               if (tmp_int >= 0) {
+                       devc->voltage_ch1 = tmp_int;
+                       devc->voltage_ch2 = tmp_int;
+               } else
                        ret = SR_ERR_ARG;
                break;
-       case SR_HWCAP_COUPLING:
+       case SR_CONF_COUPLING:
+               tmp_str = g_variant_get_string(data, NULL);
                /* TODO: Not supporting coupling per channel yet. */
                for (i = 0; coupling[i]; i++) {
-                       if (!strcmp(value, coupling[i])) {
+                       if (!strcmp(tmp_str, coupling[i])) {
                                devc->coupling_ch1 = i;
                                devc->coupling_ch2 = i;
                                break;
@@ -577,30 +579,97 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
                        ret = SR_ERR_ARG;
                break;
        default:
-               ret = SR_ERR_ARG;
+               ret = SR_ERR_NA;
                break;
        }
 
        return ret;
 }
 
-static void send_chunk(struct dev_context *devc, unsigned char *buf,
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+               const struct sr_channel_group *cg)
+{
+       struct dev_context *devc;
+       GVariant *tuple, *rational[2];
+       GVariantBuilder gvb;
+       unsigned int i;
+
+       (void)cg;
+
+       switch (key) {
+       case SR_CONF_SCAN_OPTIONS:
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+                               scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
+               break;
+       case SR_CONF_DEVICE_OPTIONS:
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+                               devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
+               break;
+       case SR_CONF_BUFFERSIZE:
+               if (!sdi)
+                       return SR_ERR_ARG;
+               devc = sdi->priv;
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
+                               devc->profile->buffersizes, 2, sizeof(uint64_t));
+               break;
+       case SR_CONF_COUPLING:
+               *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
+               break;
+       case SR_CONF_VDIV:
+               g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+               for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
+                       rational[0] = g_variant_new_uint64(vdivs[i][0]);
+                       rational[1] = g_variant_new_uint64(vdivs[i][1]);
+                       tuple = g_variant_new_tuple(rational, 2);
+                       g_variant_builder_add_value(&gvb, tuple);
+               }
+               *data = g_variant_builder_end(&gvb);
+               break;
+       case SR_CONF_FILTER:
+               *data = g_variant_new_strv(filter_targets,
+                               ARRAY_SIZE(filter_targets));
+               break;
+       case SR_CONF_TIMEBASE:
+               g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+               for (i = 0; i < ARRAY_SIZE(timebases); i++) {
+                       rational[0] = g_variant_new_uint64(timebases[i][0]);
+                       rational[1] = g_variant_new_uint64(timebases[i][1]);
+                       tuple = g_variant_new_tuple(rational, 2);
+                       g_variant_builder_add_value(&gvb, tuple);
+               }
+               *data = g_variant_builder_end(&gvb);
+               break;
+       case SR_CONF_TRIGGER_SOURCE:
+               *data = g_variant_new_strv(trigger_sources,
+                               ARRAY_SIZE(trigger_sources));
+               break;
+       default:
+               return SR_ERR_NA;
+       }
+
+       return SR_OK;
+}
+
+static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
                int num_samples)
 {
        struct sr_datafeed_packet packet;
        struct sr_datafeed_analog analog;
+       struct dev_context *devc;
        float ch1, ch2, range;
-       int num_probes, data_offset, i;
+       int num_channels, data_offset, i;
 
-       num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
+       devc = sdi->priv;
+       num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
        packet.type = SR_DF_ANALOG;
        packet.payload = &analog;
        /* TODO: support for 5xxx series 9-bit samples */
+       analog.channels = devc->enabled_channels;
        analog.num_samples = num_samples;
        analog.mq = SR_MQ_VOLTAGE;
        analog.unit = SR_UNIT_VOLT;
        /* TODO: Check malloc return value. */
-       analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
+       analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
        data_offset = 0;
        for (i = 0; i < analog.num_samples; i++) {
                /*
@@ -617,14 +686,14 @@ static void send_chunk(struct dev_context *devc, unsigned char *buf,
                 */
                /* TODO: Support for DSO-5xxx series 9-bit samples. */
                if (devc->ch1_enabled) {
-                       range = ((float)vdivs[devc->voltage_ch1].p / vdivs[devc->voltage_ch1].q) * 8;
+                       range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8;
                        ch1 = range / 255 * *(buf + i * 2 + 1);
                        /* Value is centered around 0V. */
                        ch1 -= range / 2;
                        analog.data[data_offset++] = ch1;
                }
                if (devc->ch2_enabled) {
-                       range = ((float)vdivs[devc->voltage_ch2].p / vdivs[devc->voltage_ch2].q) * 8;
+                       range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8;
                        ch2 = range / 255 * *(buf + i * 2);
                        ch2 -= range / 2;
                        analog.data[data_offset++] = ch2;
@@ -642,12 +711,14 @@ static void send_chunk(struct dev_context *devc, unsigned char *buf,
 static void receive_transfer(struct libusb_transfer *transfer)
 {
        struct sr_datafeed_packet packet;
+       struct sr_dev_inst *sdi;
        struct dev_context *devc;
        int num_samples, pre;
 
-       devc = transfer->user_data;
-       sr_dbg("receive_transfer(): status %d received %d bytes.",
-              transfer->status, transfer->actual_length);
+       sdi = transfer->user_data;
+       devc = sdi->priv;
+       sr_spew("receive_transfer(): status %d received %d bytes.",
+                  transfer->status, transfer->actual_length);
 
        if (transfer->actual_length == 0)
                /* Nothing to send to the bus. */
@@ -655,8 +726,8 @@ static void receive_transfer(struct libusb_transfer *transfer)
 
        num_samples = transfer->actual_length / 2;
 
-       sr_dbg("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
-              devc->samp_received + num_samples, devc->framesize);
+       sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
+                  devc->samp_received + num_samples, devc->framesize);
 
        /*
         * The device always sends a full frame, but the beginning of the frame
@@ -687,17 +758,17 @@ static void receive_transfer(struct libusb_transfer *transfer)
 
                        /* The rest of this chunk starts with the trigger point. */
                        sr_dbg("Reached trigger point, %d samples buffered.",
-                              devc->samp_buffered);
+                                  devc->samp_buffered);
 
                        /* Avoid the corner case where the chunk ended at
                         * exactly the trigger point. */
                        if (num_samples > pre)
-                               send_chunk(devc, transfer->buffer + pre * 2,
+                               send_chunk(sdi, transfer->buffer + pre * 2,
                                                num_samples - pre);
                }
        } else {
                /* Already past the trigger point, just send it all out. */
-               send_chunk(devc, transfer->buffer,
+               send_chunk(sdi, transfer->buffer,
                                num_samples);
        }
 
@@ -712,8 +783,8 @@ static void receive_transfer(struct libusb_transfer *transfer)
                /* That was the last chunk in this frame. Send the buffered
                 * pre-trigger samples out now, in one big chunk. */
                sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
-                      devc->samp_buffered);
-               send_chunk(devc, devc->framebuf, devc->samp_buffered);
+                          devc->samp_buffered);
+               send_chunk(sdi, devc->framebuf, devc->samp_buffered);
 
                /* Mark the end of this frame. */
                packet.type = SR_DF_FRAME_END;
@@ -734,9 +805,8 @@ static int handle_event(int fd, int revents, void *cb_data)
        struct sr_datafeed_packet packet;
        struct timeval tv;
        struct dev_context *devc;
-       struct drv_context *drvc = hdi->priv;
-       const struct libusb_pollfd **lupfd;
-       int num_probes, i;
+       struct drv_context *drvc = di->priv;
+       int num_channels;
        uint32_t trigger_offset;
        uint8_t capturestate;
 
@@ -752,10 +822,7 @@ static int handle_event(int fd, int revents, void *cb_data)
                 * TODO: Doesn't really cancel pending transfers so they might
                 * come in after SR_DF_END is sent.
                 */
-               lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
-               for (i = 0; lupfd[i]; i++)
-                       sr_source_remove(lupfd[i]->fd);
-               free(lupfd);
+               usb_source_remove(sdi->session, drvc->sr_ctx);
 
                packet.type = SR_DF_END;
                sr_session_send(sdi, &packet);
@@ -771,11 +838,11 @@ static int handle_event(int fd, int revents, void *cb_data)
 
        /* TODO: ugh */
        if (devc->dev_state == NEW_CAPTURE) {
-               if (dso_capture_start(devc) != SR_OK)
+               if (dso_capture_start(sdi) != SR_OK)
                        return TRUE;
-               if (dso_enable_trigger(devc) != SR_OK)
+               if (dso_enable_trigger(sdi) != SR_OK)
                        return TRUE;
-//             if (dso_force_trigger(devc) != SR_OK)
+//             if (dso_force_trigger(sdi) != SR_OK)
 //                     return TRUE;
                sr_dbg("Successfully requested next chunk.");
                devc->dev_state = CAPTURE;
@@ -784,7 +851,7 @@ static int handle_event(int fd, int revents, void *cb_data)
        if (devc->dev_state != CAPTURE)
                return TRUE;
 
-       if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK)
+       if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
                return TRUE;
 
        sr_dbg("Capturestate %d.", capturestate);
@@ -793,11 +860,11 @@ static int handle_event(int fd, int revents, void *cb_data)
        case CAPTURE_EMPTY:
                if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
                        devc->capture_empty_count = 0;
-                       if (dso_capture_start(devc) != SR_OK)
+                       if (dso_capture_start(sdi) != SR_OK)
                                break;
-                       if (dso_enable_trigger(devc) != SR_OK)
+                       if (dso_enable_trigger(sdi) != SR_OK)
                                break;
-//                     if (dso_force_trigger(devc) != SR_OK)
+//                     if (dso_force_trigger(sdi) != SR_OK)
 //                             break;
                        sr_dbg("Successfully requested next chunk.");
                }
@@ -809,13 +876,13 @@ static int handle_event(int fd, int revents, void *cb_data)
                /* Remember where in the captured frame the trigger is. */
                devc->trigger_offset = trigger_offset;
 
-               num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
+               num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
                /* TODO: Check malloc return value. */
-               devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2);
+               devc->framebuf = g_try_malloc(devc->framesize * num_channels * 2);
                devc->samp_buffered = devc->samp_received = 0;
 
                /* Tell the scope to send us the first frame. */
-               if (dso_get_channeldata(devc, receive_transfer) != SR_OK)
+               if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
                        break;
 
                /*
@@ -843,58 +910,38 @@ static int handle_event(int fd, int revents, void *cb_data)
        return TRUE;
 }
 
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
-                                   void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 {
-       const struct libusb_pollfd **lupfd;
-       struct sr_datafeed_packet packet;
-       struct sr_datafeed_header header;
-       struct sr_datafeed_meta_analog meta;
        struct dev_context *devc;
-       struct drv_context *drvc = hdi->priv;
-       int i;
+       struct drv_context *drvc = di->priv;
 
        if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR;
+               return SR_ERR_DEV_CLOSED;
 
        devc = sdi->priv;
        devc->cb_data = cb_data;
 
-       if (configure_probes(sdi) != SR_OK) {
-               sr_err("Failed to configure probes.");
+       if (configure_channels(sdi) != SR_OK) {
+               sr_err("Failed to configure channels.");
                return SR_ERR;
        }
 
-       if (dso_init(devc) != SR_OK)
+       if (dso_init(sdi) != SR_OK)
                return SR_ERR;
 
-       if (dso_capture_start(devc) != SR_OK)
+       if (dso_capture_start(sdi) != SR_OK)
                return SR_ERR;
 
        devc->dev_state = CAPTURE;
-       lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
-       for (i = 0; lupfd[i]; i++)
-               sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK,
-                             handle_event, (void *)sdi);
-       free(lupfd);
+       usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
 
        /* Send header packet to the session bus. */
-       packet.type = SR_DF_HEADER;
-       packet.payload = (unsigned char *)&header;
-       header.feed_version = 1;
-       gettimeofday(&header.starttime, NULL);
-       sr_session_send(cb_data, &packet);
-
-       /* Send metadata about the SR_DF_ANALOG packets to come. */
-       packet.type = SR_DF_META_ANALOG;
-       packet.payload = &meta;
-       meta.num_probes = NUM_PROBES;
-       sr_session_send(cb_data, &packet);
+       std_session_send_df_header(cb_data, LOG_PREFIX);
 
        return SR_OK;
 }
 
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
        struct dev_context *devc;
 
@@ -913,16 +960,17 @@ SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
        .name = "hantek-dso",
        .longname = "Hantek DSO",
        .api_version = 1,
-       .init = hw_init,
-       .cleanup = hw_cleanup,
-       .scan = hw_scan,
-       .dev_list = hw_dev_list,
-       .dev_clear = clear_instances,
-       .dev_open = hw_dev_open,
-       .dev_close = hw_dev_close,
-       .info_get = hw_info_get,
-       .dev_config_set = hw_dev_config_set,
-       .dev_acquisition_start = hw_dev_acquisition_start,
-       .dev_acquisition_stop = hw_dev_acquisition_stop,
+       .init = init,
+       .cleanup = cleanup,
+       .scan = scan,
+       .dev_list = dev_list,
+       .dev_clear = dev_clear,
+       .config_get = config_get,
+       .config_set = config_set,
+       .config_list = config_list,
+       .dev_open = dev_open,
+       .dev_close = dev_close,
+       .dev_acquisition_start = dev_acquisition_start,
+       .dev_acquisition_stop = dev_acquisition_stop,
        .priv = NULL,
 };