hantek-dso: use driver struct-based device instance list

[libsigrok.git] / hardware / hantek-dso / api.c

diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c
index dc8dbef87b8823eab3886e0daab6155734d67a6d..eccc6e7856a0fd8f30db88551ce2fcf5cd980c81 100644 (file)
--- a/hardware/hantek-dso/api.c
+++ b/hardware/hantek-dso/api.c
@@ -145,7 +145,8 @@ static const char *coupling[] = {
 };
 
 SR_PRIV libusb_context *usb_context = NULL;
-SR_PRIV GSList *dev_insts = 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_inst *dso_dev_new(int index, const struct dso_profile *prof)
 {
@@ -178,7 +179,7 @@ static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof
        ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
        ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
        sdi->priv = ctx;
-       dev_insts = g_slist_append(dev_insts, sdi);
+       hdi->instances = g_slist_append(hdi->instances, sdi);
 
        return sdi;
 }
@@ -201,25 +202,31 @@ static int configure_probes(struct context *ctx, const GSList *probes)
 }
 
 static int hw_init(void)
+{
+
+       if (libusb_init(&usb_context) != 0) {
+               sr_err("hantek-dso: Failed to initialize USB.");
+               return SR_ERR;
+       }
+
+       return SR_OK;
+}
+
+static int hw_scan(void)
 {
        struct sr_dev_inst *sdi;
        struct libusb_device_descriptor des;
        const struct dso_profile *prof;
        struct context *ctx;
        libusb_device **devlist;
-       int err, devcnt, i, j;
-
-       if (libusb_init(&usb_context) != 0) {
-               sr_err("hantek-dso: Failed to initialize USB.");
-               return 0;
-       }
+       int devcnt, ret, i, j;
 
        /* Find all Hantek DSO devices and upload firmware to all of them. */
        devcnt = 0;
        libusb_get_device_list(usb_context, &devlist);
        for (i = 0; devlist[i]; i++) {
-               if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
-                       sr_err("hantek-dso: failed to get device descriptor: %d", err);
+               if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+                       sr_err("hantek-dso: failed to get device descriptor: %d", ret);
                        continue;
                }
 
@@ -275,7 +282,7 @@ static int hw_dev_open(int dev_index)
        int64_t timediff_us, timediff_ms;
        int err;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ERR_ARG;
        ctx = sdi->priv;
 
@@ -320,7 +327,7 @@ static int hw_dev_close(int dev_index)
 {
        struct sr_dev_inst *sdi;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ERR_ARG;
 
        dso_close(sdi);
@@ -335,7 +342,7 @@ static int hw_cleanup(void)
        struct context *ctx;
 
        /* Properly close and free all devices. */
-       for (l = dev_insts; l; l = l->next) {
+       for (l = hdi->instances; l; l = l->next) {
                if (!(sdi = l->data)) {
                        /* Log error, but continue cleaning up the rest. */
                        sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__);
@@ -353,8 +360,8 @@ static int hw_cleanup(void)
                sr_dev_inst_free(sdi);
        }
 
-       g_slist_free(dev_insts);
-       dev_insts = NULL;
+       g_slist_free(hdi->instances);
+       hdi->instances = NULL;
 
        if (usb_context)
                libusb_exit(usb_context);
@@ -369,7 +376,7 @@ static const void *hw_dev_info_get(int dev_index, int dev_info_id)
        const void *info;
        uint64_t tmp;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return NULL;
 
        info = NULL;
@@ -414,7 +421,7 @@ static int hw_dev_status_get(int dev_index)
 {
        struct sr_dev_inst *sdi;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ST_NOT_FOUND;
 
        return sdi->status;
@@ -435,7 +442,7 @@ static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
        int ret, i;
        char **targets;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ERR;
 
        if (sdi->status != SR_ST_ACTIVE)
@@ -788,7 +795,7 @@ static int hw_dev_acquisition_start(int dev_index, void *cb_data)
        struct context *ctx;
        int i;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ERR;
 
        if (sdi->status != SR_ST_ACTIVE)
@@ -835,7 +842,7 @@ static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
        struct sr_dev_inst *sdi;
        struct context *ctx;
 
-       if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+       if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index)))
                return SR_ERR;
 
        if (sdi->status != SR_ST_ACTIVE)
@@ -856,6 +863,7 @@ SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
        .api_version = 1,
        .init = hw_init,
        .cleanup = hw_cleanup,
+       .scan = hw_scan,
        .dev_open = hw_dev_open,
        .dev_close = hw_dev_close,
        .dev_info_get = hw_dev_info_get,
@@ -864,4 +872,5 @@ SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
        .dev_config_set = hw_dev_config_set,
        .dev_acquisition_start = hw_dev_acquisition_start,
        .dev_acquisition_stop = hw_dev_acquisition_stop,
+       .instances = NULL,
 };