]> sigrok.org Git - libsigrok.git/blobdiff - hardware/zeroplus-logic-cube/zeroplus.c
drivers: rename and reorganize config get/set
[libsigrok.git] / hardware / zeroplus-logic-cube / zeroplus.c
index 883f5b49be5ebbda3acb02f0b43757191ab44c48..ba91fd5cd0c4d2601a10711780c7b2acd9024c8a 100644 (file)
 #include <inttypes.h>
 #include <glib.h>
 #include <libusb.h>
-#include "config.h"
-#include "sigrok.h"
-#include "sigrok-internal.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
 #include "analyzer.h"
 
 #define USB_VENDOR                     0x0c12
-#define USB_VENDOR_NAME                        "Zeroplus"
-#define USB_MODEL_NAME                 "Logic Cube"
-#define USB_MODEL_VERSION              ""
 
+#define VENDOR_NAME                    "ZEROPLUS"
+#define MODEL_NAME                     "Logic Cube LAP-C"
+#define MODEL_VERSION                  NULL
+
+#define NUM_PROBES                     16
 #define USB_INTERFACE                  0
 #define USB_CONFIGURATION              1
 #define NUM_TRIGGER_STAGES             4
 
 #define PACKET_SIZE                    2048    /* ?? */
 
+//#define ZP_EXPERIMENTAL
+
 typedef struct {
+       unsigned short vid;
        unsigned short pid;
-       char model_name[64];
+       char *model_name;
        unsigned int channels;
        unsigned int sample_depth;      /* In Ksamples/channel */
        unsigned int max_sampling_freq;
@@ -54,66 +58,41 @@ typedef struct {
  * same 128K sample depth.
  */
 static model_t zeroplus_models[] = {
-       {0x7009, "LAP-C(16064)",  16, 64,   100},
-       {0x700A, "LAP-C(16128)",  16, 128,  200},
-       {0x700B, "LAP-C(32128)",  32, 128,  200},
-       {0x700C, "LAP-C(321000)", 32, 1024, 200},
-       {0x700D, "LAP-C(322000)", 32, 2048, 200},
-       {0x700E, "LAP-C(16032)",  16, 32,   100},
-       {0x7016, "LAP-C(162000)", 16, 2048, 200},
+       {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
+       {0x0c12, 0x700A, "LAP-C(16128)",  16, 128,  200},
+       /* TODO: we don't know anything about these
+       {0x0c12, 0x700B, "LAP-C(32128)",  32, 128,  200},
+       {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
+       {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
+       */
+       {0x0c12, 0x700E, "LAP-C(16032)",  16, 32,   100},
+       {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
+       { 0, 0, 0, 0, 0, 0 }
 };
 
-static int capabilities[] = {
-       SR_HWCAP_LOGIC_ANALYZER,
-       SR_HWCAP_SAMPLERATE,
-       SR_HWCAP_PROBECONFIG,
-       SR_HWCAP_CAPTURE_RATIO,
+static const int hwcaps[] = {
+       SR_CONF_LOGIC_ANALYZER,
+       SR_CONF_SAMPLERATE,
+       SR_CONF_CAPTURE_RATIO,
 
        /* These are really implemented in the driver, not the hardware. */
-       SR_HWCAP_LIMIT_SAMPLES,
+       SR_CONF_LIMIT_SAMPLES,
        0,
 };
 
-static const char *probe_names[] = {
-       "0",
-       "1",
-       "2",
-       "3",
-       "4",
-       "5",
-       "6",
-       "7",
-       "8",
-       "9",
-       "10",
-       "11",
-       "12",
-       "13",
-       "14",
-       "15",
-       "16",
-       "17",
-       "18",
-       "19",
-       "20",
-       "21",
-       "22",
-       "23",
-       "24",
-       "25",
-       "26",
-       "27",
-       "28",
-       "29",
-       "30",
-       "31",
+/*
+ * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
+ * We currently ignore other untested/unsupported devices here.
+ */
+static const char *probe_names[NUM_PROBES + 1] = {
+       "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
+       "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
        NULL,
 };
 
-/* List of struct sr_device_instance, maintained by opendev()/closedev(). */
-static GSList *device_instances = NULL;
-
-static libusb_context *usb_context = NULL;
+/* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
+SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
+static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
 
 /*
  * The hardware supports more samplerates than these, but these are the
@@ -124,7 +103,7 @@ static libusb_context *usb_context = NULL;
  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
  * that high.
  */
-static uint64_t supported_samplerates[] = {
+static const uint64_t supported_samplerates[] = {
        SR_HZ(100),
        SR_HZ(500),
        SR_KHZ(1),
@@ -146,27 +125,33 @@ static uint64_t supported_samplerates[] = {
        0,
 };
 
-static struct sr_samplerates samplerates = {
-       SR_HZ(0),
-       SR_HZ(0),
-       SR_HZ(0),
+static const struct sr_samplerates samplerates = {
+       0,
+       0,
+       0,
        supported_samplerates,
 };
 
-struct zp {
+/* Private, per-device-instance driver context. */
+struct dev_context {
        uint64_t cur_samplerate;
+       uint64_t max_samplerate;
        uint64_t limit_samples;
        int num_channels; /* TODO: This isn't initialized before it's needed :( */
-       uint64_t memory_size;
-       uint8_t probe_mask;
-       uint8_t trigger_mask[NUM_TRIGGER_STAGES];
-       uint8_t trigger_value[NUM_TRIGGER_STAGES];
+       int memory_size;
+       unsigned int max_memory_size;
+       //uint8_t probe_mask;
+       //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
+       //uint8_t trigger_value[NUM_TRIGGER_STAGES];
        // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
+       int trigger;
+       unsigned int capture_ratio;
 
-       struct sr_usb_device_instance *usb;
+       /* TODO: this belongs in the device instance */
+       struct sr_usb_dev_inst *usb;
 };
 
-static int hw_set_configuration(int device_index, int capability, void *value);
+static int hw_dev_close(struct sr_dev_inst *sdi);
 
 static unsigned int get_memory_size(int type)
 {
@@ -182,145 +167,38 @@ static unsigned int get_memory_size(int type)
                return 0;
 }
 
-static int opendev4(struct sr_device_instance **sdi, libusb_device *dev,
-                   struct libusb_device_descriptor *des)
-{
-       struct zp *zp;
-       unsigned int i;
-       int err;
-
-       /* Note: sdi is non-NULL, the caller already checked this. */
-
-       if (!(zp = (*sdi)->priv)) {
-               sr_err("zp: %s: (*sdi)->priv was NULL", __func__);
-               return -1;
-       }
-
-       if ((err = libusb_get_device_descriptor(dev, des))) {
-               sr_err("failed to get device descriptor: %d", err);
-               return -1;
-       }
-
-       if (des->idVendor != USB_VENDOR)
-               return 0;
-
-       if (libusb_get_bus_number(dev) == zp->usb->bus
-           && libusb_get_device_address(dev) == zp->usb->address) {
-
-               for (i = 0; i < ARRAY_SIZE(zeroplus_models); i++) {
-                       if (!(des->idProduct == zeroplus_models[i].pid))
-                               continue;
-
-                       sr_info("Found PID=%04X (%s)", des->idProduct,
-                               zeroplus_models[i].model_name);
-                       zp->num_channels = zeroplus_models[i].channels;
-                       zp->memory_size = zeroplus_models[i].sample_depth * 1024;
-                       break;
-               }
-
-               if (zp->num_channels == 0) {
-                       sr_err("Unknown ZeroPlus device %04X", des->idProduct);
-                       return -2;
-               }
-
-               /* Found it. */
-               if (!(err = libusb_open(dev, &(zp->usb->devhdl)))) {
-                       (*sdi)->status = SR_ST_ACTIVE;
-                       sr_info("opened device %d on %d.%d interface %d",
-                               (*sdi)->index, zp->usb->bus,
-                               zp->usb->address, USB_INTERFACE);
-               } else {
-                       sr_err("failed to open device: %d", err);
-                       *sdi = NULL;
-               }
-       }
-
-       return 0;
-}
-
-static struct sr_device_instance *zp_open_device(int device_index)
-{
-       struct sr_device_instance *sdi;
-       libusb_device **devlist;
-       struct libusb_device_descriptor des;
-       int err, i;
-
-       if (!(sdi = sr_get_device_instance(device_instances, device_index)))
-               return NULL;
-
-       libusb_get_device_list(usb_context, &devlist);
-       if (sdi->status == SR_ST_INACTIVE) {
-               /* Find the device by vendor, product, bus and address. */
-               libusb_get_device_list(usb_context, &devlist);
-               for (i = 0; devlist[i]; i++) {
-                       /* TODO: Error handling. */
-                       err = opendev4(&sdi, devlist[i], &des);
-               }
-       } else {
-               /* Status must be SR_ST_ACTIVE, i.e. already in use... */
-               sdi = NULL;
-       }
-       libusb_free_device_list(devlist, 1);
-
-       if (sdi && sdi->status != SR_ST_ACTIVE)
-               sdi = NULL;
-
-       return sdi;
-}
-
-static void close_device(struct sr_device_instance *sdi)
-{
-       struct zp *zp;
-
-       if (!(zp = sdi->priv)) {
-               sr_err("zp: %s: sdi->priv was NULL", __func__);
-               return; /* FIXME */
-       }
-
-       if (!zp->usb->devhdl)
-               return;
-
-       sr_info("closing device %d on %d.%d interface %d", sdi->index,
-               zp->usb->bus, zp->usb->address, USB_INTERFACE);
-       libusb_release_interface(zp->usb->devhdl, USB_INTERFACE);
-       libusb_reset_device(zp->usb->devhdl);
-       libusb_close(zp->usb->devhdl);
-       zp->usb->devhdl = NULL;
-       /* TODO: Call libusb_exit() here or only in hw_cleanup()? */
-       sdi->status = SR_ST_INACTIVE;
-}
-
-static int configure_probes(struct sr_device_instance *sdi, GSList *probes)
+#if 0
+static int configure_probes(const struct sr_dev_inst *sdi)
 {
-       struct zp *zp;
-       struct sr_probe *probe;
-       GSList *l;
+       struct dev_context *devc;
+       const struct sr_probe *probe;
+       const GSList *l;
        int probe_bit, stage, i;
        char *tc;
 
        /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
-       zp = sdi->priv;
+       devc = sdi->priv;
 
-       zp->probe_mask = 0;
+       devc->probe_mask = 0;
        for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
-               zp->trigger_mask[i] = 0;
-               zp->trigger_value[i] = 0;
+               devc->trigger_mask[i] = 0;
+               devc->trigger_value[i] = 0;
        }
 
        stage = -1;
-       for (l = probes; l; l = l->next) {
+       for (l = sdi->probes; l; l = l->next) {
                probe = (struct sr_probe *)l->data;
                if (probe->enabled == FALSE)
                        continue;
-               probe_bit = 1 << (probe->index - 1);
-               zp->probe_mask |= probe_bit;
+               probe_bit = 1 << (probe->index);
+               devc->probe_mask |= probe_bit;
 
                if (probe->trigger) {
                        stage = 0;
                        for (tc = probe->trigger; *tc; tc++) {
-                               zp->trigger_mask[stage] |= probe_bit;
+                               devc->trigger_mask[stage] |= probe_bit;
                                if (*tc == '1')
-                                       zp->trigger_value[stage] |= probe_bit;
+                                       devc->trigger_value[stage] |= probe_bit;
                                stage++;
                                if (stage > NUM_TRIGGER_STAGES)
                                        return SR_ERR;
@@ -330,126 +208,273 @@ static int configure_probes(struct sr_device_instance *sdi, GSList *probes)
 
        return SR_OK;
 }
+#endif
+
+static int configure_probes(const struct sr_dev_inst *sdi)
+{
+       struct dev_context *devc;
+       const GSList *l;
+       const struct sr_probe *probe;
+       char *tc;
+       int type;
+
+       /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
+       devc = sdi->priv;
+
+       for (l = sdi->probes; l; l = l->next) {
+               probe = (struct sr_probe *)l->data;
+               if (probe->enabled == FALSE)
+                       continue;
+
+               if ((tc = probe->trigger)) {
+                       switch (*tc) {
+                       case '1':
+                               type = TRIGGER_HIGH;
+                               break;
+                       case '0':
+                               type = TRIGGER_LOW;
+                               break;
+#if 0
+                       case 'r':
+                               type = TRIGGER_POSEDGE;
+                               break;
+                       case 'f':
+                               type = TRIGGER_NEGEDGE;
+                               break;
+                       case 'c':
+                               type = TRIGGER_ANYEDGE;
+                               break;
+#endif
+                       default:
+                               return SR_ERR;
+                       }
+                       analyzer_add_trigger(probe->index, type);
+                       devc->trigger = 1;
+               }
+       }
+
+       return SR_OK;
+}
+
+static int clear_instances(void)
+{
+       GSList *l;
+       struct sr_dev_inst *sdi;
+       struct drv_context *drvc;
+       struct dev_context *devc;
+
+       drvc = di->priv;
+       for (l = drvc->instances; l; l = l->next) {
+               sdi = l->data;
+               if (!(devc = sdi->priv)) {
+                       /* Log error, but continue cleaning up the rest. */
+                       sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
+                       continue;
+               }
+               sr_usb_dev_inst_free(devc->usb);
+               /* Properly close all devices... */
+               hw_dev_close(sdi);
+               /* ...and free all their memory. */
+               sr_dev_inst_free(sdi);
+       }
+       g_slist_free(drvc->instances);
+       drvc->instances = NULL;
+
+       return SR_OK;
+}
 
 /*
  * API callbacks
  */
 
-static int hw_init(const char *deviceinfo)
+static int hw_init(struct sr_context *sr_ctx)
+{
+       struct drv_context *drvc;
+
+       if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+               sr_err("zeroplus: driver context malloc failed.");
+               return SR_ERR_MALLOC;
+       }
+       drvc->sr_ctx = sr_ctx;
+       di->priv = drvc;
+
+       return SR_OK;
+}
+
+static GSList *hw_scan(GSList *options)
 {
-       struct sr_device_instance *sdi;
+       struct sr_dev_inst *sdi;
+       struct sr_probe *probe;
+       struct drv_context *drvc;
+       struct dev_context *devc;
+       model_t *prof;
        struct libusb_device_descriptor des;
        libusb_device **devlist;
-       int err, devcnt, i;
-       struct zp *zp;
+       GSList *devices;
+       int ret, devcnt, i, j;
 
-       /* Avoid compiler warnings. */
-       (void)deviceinfo;
+       (void)options;
 
-       /* Allocate memory for our private driver context. */
-       if (!(zp = g_try_malloc(sizeof(struct zp)))) {
-               sr_err("zp: %s: struct zp malloc failed", __func__);
-               return 0;
-       }
+       drvc = di->priv;
+       devices = NULL;
 
-       /* Set some sane defaults. */
-       zp->cur_samplerate = 0;
-       zp->limit_samples = 0;
-       zp->num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
-       zp->memory_size = 0;
-       zp->probe_mask = 0;
-       memset(zp->trigger_mask, 0, NUM_TRIGGER_STAGES);
-       memset(zp->trigger_value, 0, NUM_TRIGGER_STAGES);
-       // memset(zp->trigger_buffer, 0, NUM_TRIGGER_STAGES);
-
-       if (libusb_init(&usb_context) != 0) {
-               sr_err("Failed to initialize USB.");
-               return 0;
-       }
+       clear_instances();
 
-       /* Find all ZeroPlus analyzers and add them to device list. */
+       /* Find all ZEROPLUS analyzers and add them to device list. */
        devcnt = 0;
-       libusb_get_device_list(usb_context, &devlist); /* TODO: Errors. */
+       libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 
        for (i = 0; devlist[i]; i++) {
-               err = libusb_get_device_descriptor(devlist[i], &des);
-               if (err != 0) {
-                       sr_err("failed to get device descriptor: %d", err);
+               ret = libusb_get_device_descriptor(devlist[i], &des);
+               if (ret != 0) {
+                       sr_err("zp: failed to get device descriptor: %s",
+                              libusb_error_name(ret));
                        continue;
                }
 
-               if (des.idVendor == USB_VENDOR) {
-                       /*
-                        * Definitely a Zeroplus.
-                        * TODO: Any way to detect specific model/version in
-                        * the zeroplus range?
-                        */
-                       /* Register the device with libsigrok. */
-                       sdi = sr_device_instance_new(devcnt,
-                                       SR_ST_INACTIVE, USB_VENDOR_NAME,
-                                       USB_MODEL_NAME, USB_MODEL_VERSION);
-                       if (!sdi) {
-                               sr_err("zp: %s: sr_device_instance_new failed",
-                                      __func__);
-                               return 0;
+               prof = NULL;
+               for (j = 0; j < zeroplus_models[j].vid; j++) {
+                       if (des.idVendor == zeroplus_models[j].vid &&
+                               des.idProduct == zeroplus_models[j].pid) {
+                               prof = &zeroplus_models[j];
                        }
+               }
+               /* Skip if the device was not found */
+               if (!prof)
+                       continue;
+               sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
 
-                       sdi->priv = zp;
+               /* Register the device with libsigrok. */
+               if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
+                               VENDOR_NAME, prof->model_name, NULL))) {
+                       sr_err("zp: %s: sr_dev_inst_new failed", __func__);
+                       return NULL;
+               }
+               sdi->driver = di;
 
-                       device_instances =
-                           g_slist_append(device_instances, sdi);
-                       zp->usb = sr_usb_device_instance_new(
-                               libusb_get_bus_number(devlist[i]),
-                               libusb_get_device_address(devlist[i]), NULL);
-                       devcnt++;
+               /* Allocate memory for our private driver context. */
+               if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+                       sr_err("zp: %s: devc malloc failed", __func__);
+                       return NULL;
+               }
+               sdi->priv = devc;
+               devc->num_channels = prof->channels;
+#ifdef ZP_EXPERIMENTAL
+               devc->max_memory_size = 128 * 1024;
+               devc->max_samplerate = 200;
+#else
+               devc->max_memory_size = prof->sample_depth * 1024;
+               devc->max_samplerate = prof->max_sampling_freq;
+#endif
+               devc->max_samplerate *= SR_MHZ(1);
+               devc->memory_size = MEMORY_SIZE_8K;
+               // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
+
+               /* Fill in probelist according to this device's profile. */
+               for (j = 0; j < devc->num_channels; j++) {
+                       if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
+                                       probe_names[j])))
+                               return NULL;
+                       sdi->probes = g_slist_append(sdi->probes, probe);
                }
+
+               devices = g_slist_append(devices, sdi);
+               drvc->instances = g_slist_append(drvc->instances, sdi);
+               devc->usb = sr_usb_dev_inst_new(
+                       libusb_get_bus_number(devlist[i]),
+                       libusb_get_device_address(devlist[i]), NULL);
+               devcnt++;
+
        }
        libusb_free_device_list(devlist, 1);
 
-       return devcnt;
+       return devices;
 }
 
-static int hw_opendev(int device_index)
+static GSList *hw_dev_list(void)
 {
-       struct sr_device_instance *sdi;
-       struct zp *zp;
-       int err;
+       struct drv_context *drvc;
 
-       if (!(sdi = zp_open_device(device_index))) {
-               sr_err("unable to open device");
-               return SR_ERR;
-       }
+       drvc = di->priv;
 
-       /* TODO: Note: sdi is retrieved in zp_open_device(). */
+       return drvc->instances;
+}
 
-       if (!(zp = sdi->priv)) {
+static int hw_dev_open(struct sr_dev_inst *sdi)
+{
+       struct dev_context *devc;
+       struct drv_context *drvc = di->priv;
+       libusb_device **devlist, *dev;
+       struct libusb_device_descriptor des;
+       int device_count, ret, i;
+
+       if (!(devc = sdi->priv)) {
                sr_err("zp: %s: sdi->priv was NULL", __func__);
                return SR_ERR_ARG;
        }
 
-       err = libusb_set_configuration(zp->usb->devhdl, USB_CONFIGURATION);
-       if (err < 0) {
-               sr_err("zp: Unable to set USB configuration %d: %d",
-                      USB_CONFIGURATION, err);
+       device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
+                                             &devlist);
+       if (device_count < 0) {
+               sr_err("zp: Failed to retrieve device list");
                return SR_ERR;
        }
 
-       err = libusb_claim_interface(zp->usb->devhdl, USB_INTERFACE);
-       if (err != 0) {
-               sr_err("Unable to claim interface: %d", err);
+       dev = NULL;
+       for (i = 0; i < device_count; i++) {
+               if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+                       sr_err("zp: Failed to get device descriptor: %s.",
+                              libusb_error_name(ret));
+                       continue;
+               }
+               if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
+                   && libusb_get_device_address(devlist[i]) == devc->usb->address) {
+                       dev = devlist[i];
+                       break;
+               }
+       }
+       if (!dev) {
+               sr_err("device on bus %d address %d disappeared!",
+                               devc->usb->bus, devc->usb->address);
                return SR_ERR;
        }
 
-       analyzer_reset(zp->usb->devhdl);
-       analyzer_initialize(zp->usb->devhdl);
+       if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
+               sdi->status = SR_ST_ACTIVE;
+               sr_info("zp: opened device %d on %d.%d interface %d",
+                       sdi->index, devc->usb->bus,
+                       devc->usb->address, USB_INTERFACE);
+       } else {
+               sr_err("zp: failed to open device: %s", libusb_error_name(ret));
+               return SR_ERR;
+       }
+
+       ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
+       if (ret < 0) {
+               sr_err("zp: Unable to set USB configuration %d: %s",
+                      USB_CONFIGURATION, libusb_error_name(ret));
+               return SR_ERR;
+       }
 
-       analyzer_set_memory_size(MEMORY_SIZE_512K);
+       ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
+       if (ret != 0) {
+               sr_err("zp: Unable to claim interface: %s",
+                      libusb_error_name(ret));
+               return SR_ERR;
+       }
+
+       /* Set default configuration after power on */
+       if (analyzer_read_status(devc->usb->devhdl) == 0)
+               analyzer_configure(devc->usb->devhdl);
+
+       analyzer_reset(devc->usb->devhdl);
+       analyzer_initialize(devc->usb->devhdl);
+
+       //analyzer_set_memory_size(MEMORY_SIZE_512K);
        // analyzer_set_freq(g_freq, g_freq_scale);
        analyzer_set_trigger_count(1);
        // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
        // * get_memory_size(g_memory_size)) / 100) >> 2);
-       analyzer_set_ramsize_trigger_address(
-               (100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
 
 #if 0
        if (g_double_mode == 1)
@@ -460,224 +485,258 @@ static int hw_opendev(int device_index)
 #endif
        analyzer_set_compression(COMPRESSION_NONE);
 
-       if (zp->cur_samplerate == 0) {
-               /* Samplerate hasn't been set. Default to the slowest one. */
-               if (hw_set_configuration(device_index, SR_HWCAP_SAMPLERATE,
-                    &samplerates.list[0]) == SR_ERR)
-                       return SR_ERR;
+       if (devc->cur_samplerate == 0) {
+               /* Samplerate hasn't been set. Default to 1MHz. */
+               analyzer_set_freq(1, FREQ_SCALE_MHZ);
+               devc->cur_samplerate = SR_MHZ(1);
        }
 
        return SR_OK;
 }
 
-static int hw_closedev(int device_index)
+static int hw_dev_close(struct sr_dev_inst *sdi)
 {
-       struct sr_device_instance *sdi;
+       struct dev_context *devc;
 
-       if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
-               sr_err("zp: %s: sdi was NULL", __func__);
-               return SR_ERR; /* TODO: SR_ERR_ARG? */
+       if (!(devc = sdi->priv)) {
+               sr_err("zp: %s: sdi->priv was NULL", __func__);
+               return SR_ERR;
        }
 
-       /* TODO */
-       close_device(sdi);
+       if (!devc->usb->devhdl)
+               return SR_ERR;
+
+       sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
+               devc->usb->bus, devc->usb->address, USB_INTERFACE);
+       libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
+       libusb_reset_device(devc->usb->devhdl);
+       libusb_close(devc->usb->devhdl);
+       devc->usb->devhdl = NULL;
+       sdi->status = SR_ST_INACTIVE;
 
        return SR_OK;
 }
 
-static void hw_cleanup(void)
+static int hw_cleanup(void)
 {
-       GSList *l;
+       struct drv_context *drvc;
 
-       /* Properly close all devices... */
-       for (l = device_instances; l; l = l->next)
-               close_device((struct sr_device_instance *)l->data);
+       if (!(drvc = di->priv))
+               return SR_OK;
 
-       /* ...and free all their memory. */
-       for (l = device_instances; l; l = l->next)
-               g_free(l->data);
-       g_slist_free(device_instances);
-       device_instances = NULL;
+       clear_instances();
 
-       if (usb_context)
-               libusb_exit(usb_context);
-       usb_context = NULL;
+       return SR_OK;
 }
 
-static void *hw_get_device_info(int device_index, int device_info_id)
+static int config_get(int id, const void **data, const struct sr_dev_inst *sdi)
 {
-       struct sr_device_instance *sdi;
-       struct zp *zp;
-       void *info;
-
-       if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
-               sr_err("zp: %s: sdi was NULL", __func__);
-               return NULL;
-       }
+       struct dev_context *devc;
 
-       if (!(zp = sdi->priv)) {
-               sr_err("zp: %s: sdi->priv was NULL", __func__);
-               return NULL;
-       }
-
-       switch (device_info_id) {
-       case SR_DI_INSTANCE:
-               info = sdi;
-               break;
-       case SR_DI_NUM_PROBES:
-               info = GINT_TO_POINTER(zp->num_channels);
-               break;
-       case SR_DI_PROBE_NAMES:
-               info = probe_names;
+       switch (id) {
+       case SR_DI_HWCAPS:
+               *data = hwcaps;
                break;
        case SR_DI_SAMPLERATES:
-               info = &samplerates;
+               *data = &samplerates;
+               sr_spew("zp: %s: Returning samplerates.", __func__);
                break;
        case SR_DI_TRIGGER_TYPES:
-               info = TRIGGER_TYPES;
+               *data = TRIGGER_TYPES;
+               sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
                break;
        case SR_DI_CUR_SAMPLERATE:
-               info = &zp->cur_samplerate;
+               if (sdi) {
+                       devc = sdi->priv;
+                       *data = &devc->cur_samplerate;
+                       sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
+                               __func__, devc->cur_samplerate);
+               } else
+                       return SR_ERR;
                break;
        default:
-               /* Unknown device info ID, return NULL. */
-               sr_err("zp: %s: Unknown device info ID", __func__);
-               info = NULL;
-               break;
+               return SR_ERR_ARG;
        }
 
-       return info;
+       return SR_OK;
 }
 
-static int hw_get_status(int device_index)
+static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
 {
-       struct sr_device_instance *sdi;
+       int i;
+
+       for (i = 0; supported_samplerates[i]; i++)
+               if (samplerate == supported_samplerates[i])
+                       break;
+       if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
+               sr_err("zp: %s: unsupported samplerate", __func__);
+               return SR_ERR_ARG;
+       }
+
+       sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
 
-       sdi = sr_get_device_instance(device_instances, device_index);
-       if (sdi)
-               return sdi->status;
+       if (samplerate >= SR_MHZ(1))
+               analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
+       else if (samplerate >= SR_KHZ(1))
+               analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
        else
-               return SR_ST_NOT_FOUND;
+               analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
+
+       devc->cur_samplerate = samplerate;
+
+       return SR_OK;
 }
 
-static int *hw_get_capabilities(void)
+static int set_limit_samples(struct dev_context *devc, uint64_t samples)
 {
-       return capabilities;
+       devc->limit_samples = samples;
+
+       if (samples <= 2 * 1024)
+               devc->memory_size = MEMORY_SIZE_8K;
+       else if (samples <= 16 * 1024)
+               devc->memory_size = MEMORY_SIZE_64K;
+       else if (samples <= 32 * 1024 ||
+                devc->max_memory_size <= 32 * 1024)
+               devc->memory_size = MEMORY_SIZE_128K;
+       else
+               devc->memory_size = MEMORY_SIZE_512K;
+
+       sr_info("zp: Setting memory size to %dK.",
+               get_memory_size(devc->memory_size) / 1024);
+
+       analyzer_set_memory_size(devc->memory_size);
+
+       return SR_OK;
 }
 
-static int set_configuration_samplerate(struct sr_device_instance *sdi,
-                                       uint64_t samplerate)
+static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
 {
-       struct zp *zp;
-
-       if (!sdi) {
-               sr_err("zp: %s: sdi was NULL", __func__);
+       if (ratio > 100) {
+               sr_err("zp: %s: invalid capture ratio", __func__);
                return SR_ERR_ARG;
        }
 
-       if (!(zp = sdi->priv)) {
-               sr_err("zp: %s: sdi->priv was NULL", __func__);
-               return SR_ERR_ARG;
-       }
+       devc->capture_ratio = ratio;
 
-       sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
-
-       if (samplerate > SR_MHZ(1))
-               analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
-       else if (samplerate > SR_KHZ(1))
-               analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
-       else
-               analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
-
-       zp->cur_samplerate = samplerate;
+       sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
 
        return SR_OK;
 }
 
-static int hw_set_configuration(int device_index, int capability, void *value)
+static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
 {
-       struct sr_device_instance *sdi;
-       uint64_t *tmp_u64;
-       struct zp *zp;
+       struct dev_context *devc;
 
-       if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
+       if (!sdi) {
                sr_err("zp: %s: sdi was NULL", __func__);
-               return SR_ERR;
+               return SR_ERR_ARG;
        }
 
-       if (!(zp = sdi->priv)) {
+       if (!(devc = sdi->priv)) {
                sr_err("zp: %s: sdi->priv was NULL", __func__);
                return SR_ERR_ARG;
        }
 
-       switch (capability) {
-       case SR_HWCAP_SAMPLERATE:
-               tmp_u64 = value;
-               return set_configuration_samplerate(sdi, *tmp_u64);
-       case SR_HWCAP_PROBECONFIG:
-               return configure_probes(sdi, (GSList *)value);
-       case SR_HWCAP_LIMIT_SAMPLES:
-               tmp_u64 = value;
-               zp->limit_samples = *tmp_u64;
-               return SR_OK;
+       switch (id) {
+       case SR_CONF_SAMPLERATE:
+               return set_samplerate(devc, *(const uint64_t *)value);
+       case SR_CONF_LIMIT_SAMPLES:
+               return set_limit_samples(devc, *(const uint64_t *)value);
+       case SR_CONF_CAPTURE_RATIO:
+               return set_capture_ratio(devc, *(const uint64_t *)value);
        default:
                return SR_ERR;
        }
 }
 
-static int hw_start_acquisition(int device_index, gpointer session_data)
+static void set_triggerbar(struct dev_context *devc)
+{
+       unsigned int ramsize;
+       unsigned int n;
+       unsigned int triggerbar;
+
+       ramsize = get_memory_size(devc->memory_size) / 4;
+       if (devc->trigger) {
+               n = ramsize;
+               if (devc->max_memory_size < n)
+                       n = devc->max_memory_size;
+               if (devc->limit_samples < n)
+                       n = devc->limit_samples;
+               n = n * devc->capture_ratio / 100;
+               if (n > ramsize - 8)
+                       triggerbar = ramsize - 8;
+               else
+                       triggerbar = n;
+       } else {
+               triggerbar = 0;
+       }
+       analyzer_set_triggerbar_address(triggerbar);
+       analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
+
+       sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
+       sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
+              ramsize - triggerbar, ramsize - triggerbar);
+}
+
+static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+               void *cb_data)
 {
-       struct sr_device_instance *sdi;
        struct sr_datafeed_packet packet;
        struct sr_datafeed_logic logic;
        struct sr_datafeed_header header;
-       uint64_t samples_read;
+       //uint64_t samples_read;
        int res;
        unsigned int packet_num;
+       unsigned int n;
        unsigned char *buf;
-       struct zp *zp;
+       struct dev_context *devc;
 
-       if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
-               sr_err("zp: %s: sdi was NULL", __func__);
-               return SR_ERR;
-       }
-
-       if (!(zp = sdi->priv)) {
+       if (!(devc = sdi->priv)) {
                sr_err("zp: %s: sdi->priv was NULL", __func__);
                return SR_ERR_ARG;
        }
 
+       if (configure_probes(sdi) != SR_OK) {
+               sr_err("zp: failed to configured probes");
+               return SR_ERR;
+       }
+
+       set_triggerbar(devc);
+
        /* push configured settings to device */
-       analyzer_configure(zp->usb->devhdl);
+       analyzer_configure(devc->usb->devhdl);
 
-       analyzer_start(zp->usb->devhdl);
-       sr_info("Waiting for data");
-       analyzer_wait_data(zp->usb->devhdl);
+       analyzer_start(devc->usb->devhdl);
+       sr_info("zp: Waiting for data");
+       analyzer_wait_data(devc->usb->devhdl);
 
-       sr_info("Stop address    = 0x%x", analyzer_get_stop_address(zp->usb->devhdl));
-       sr_info("Now address     = 0x%x", analyzer_get_now_address(zp->usb->devhdl));
-       sr_info("Trigger address = 0x%x", analyzer_get_trigger_address(zp->usb->devhdl));
+       sr_info("zp: Stop address    = 0x%x",
+               analyzer_get_stop_address(devc->usb->devhdl));
+       sr_info("zp: Now address     = 0x%x",
+               analyzer_get_now_address(devc->usb->devhdl));
+       sr_info("zp: Trigger address = 0x%x",
+               analyzer_get_trigger_address(devc->usb->devhdl));
 
        packet.type = SR_DF_HEADER;
        packet.payload = &header;
        header.feed_version = 1;
        gettimeofday(&header.starttime, NULL);
-       header.samplerate = zp->cur_samplerate;
-       header.num_logic_probes = zp->num_channels;
-       sr_session_bus(session_data, &packet);
+       sr_session_send(cb_data, &packet);
 
        if (!(buf = g_try_malloc(PACKET_SIZE))) {
                sr_err("zp: %s: buf malloc failed", __func__);
                return SR_ERR_MALLOC;
        }
 
-       samples_read = 0;
-       analyzer_read_start(zp->usb->devhdl);
+       //samples_read = 0;
+       analyzer_read_start(devc->usb->devhdl);
        /* Send the incoming transfer to the session bus. */
-       for (packet_num = 0; packet_num < (zp->memory_size * 4 / PACKET_SIZE);
-            packet_num++) {
-               res = analyzer_read_data(zp->usb->devhdl, buf, PACKET_SIZE);
-               sr_info("Tried to read %llx bytes, actually read %x bytes",
+       n = get_memory_size(devc->memory_size);
+       if (devc->max_memory_size * 4 < n)
+               n = devc->max_memory_size * 4;
+       for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
+               res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
+               sr_info("zp: Tried to read %d bytes, actually read %d bytes",
                        PACKET_SIZE, res);
 
                packet.type = SR_DF_LOGIC;
@@ -685,56 +744,52 @@ static int hw_start_acquisition(int device_index, gpointer session_data)
                logic.length = PACKET_SIZE;
                logic.unitsize = 4;
                logic.data = buf;
-               sr_session_bus(session_data, &packet);
-               samples_read += res / 4;
+               sr_session_send(cb_data, &packet);
+               //samples_read += res / 4;
        }
-       analyzer_read_stop(zp->usb->devhdl);
+       analyzer_read_stop(devc->usb->devhdl);
        g_free(buf);
 
        packet.type = SR_DF_END;
-       sr_session_bus(session_data, &packet);
+       sr_session_send(cb_data, &packet);
 
        return SR_OK;
 }
 
-/* This stops acquisition on ALL devices, ignoring device_index. */
-static int hw_stop_acquisition(int device_index, gpointer session_device_id)
+/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
        struct sr_datafeed_packet packet;
-       struct sr_device_instance *sdi;
-       struct zp *zp;
+       struct dev_context *devc;
 
        packet.type = SR_DF_END;
-       sr_session_bus(session_device_id, &packet);
-
-       if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
-               sr_err("zp: %s: sdi was NULL", __func__);
-               return SR_ERR_BUG;
-       }
+       sr_session_send(cb_data, &packet);
 
-       if (!(zp = sdi->priv)) {
+       if (!(devc = sdi->priv)) {
                sr_err("zp: %s: sdi->priv was NULL", __func__);
                return SR_ERR_BUG;
        }
 
-       analyzer_reset(zp->usb->devhdl);
+       analyzer_reset(devc->usb->devhdl);
        /* TODO: Need to cancel and free any queued up transfers. */
 
        return SR_OK;
 }
 
-SR_PRIV struct sr_device_plugin zeroplus_logic_cube_plugin_info = {
+SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
        .name = "zeroplus-logic-cube",
-       .longname = "Zeroplus Logic Cube LAP-C series",
+       .longname = "ZEROPLUS Logic Cube LAP-C series",
        .api_version = 1,
        .init = hw_init,
        .cleanup = hw_cleanup,
-       .opendev = hw_opendev,
-       .closedev = hw_closedev,
-       .get_device_info = hw_get_device_info,
-       .get_status = hw_get_status,
-       .get_capabilities = hw_get_capabilities,
-       .set_configuration = hw_set_configuration,
-       .start_acquisition = hw_start_acquisition,
-       .stop_acquisition = hw_stop_acquisition,
+       .scan = hw_scan,
+       .dev_list = hw_dev_list,
+       .dev_clear = hw_cleanup,
+       .config_get = config_get,
+       .config_set = config_set,
+       .dev_open = hw_dev_open,
+       .dev_close = hw_dev_close,
+       .dev_acquisition_start = hw_dev_acquisition_start,
+       .dev_acquisition_stop = hw_dev_acquisition_stop,
+       .priv = NULL,
 };