drivers: Factor out std_gvar_tuple_{array,rational}().

[libsigrok.git] / src / hardware / kecheng-kc-330b / api.c

diff --git a/src/hardware/kecheng-kc-330b/api.c b/src/hardware/kecheng-kc-330b/api.c
index f67d253238dc1e3dfe88f73085585d6a6d9b55ea..8d0703cc7d2634409fd8af409fdf646a3acbd8b0 100644 (file)
--- a/src/hardware/kecheng-kc-330b/api.c
+++ b/src/hardware/kecheng-kc-330b/api.c
@@ -25,8 +25,11 @@
 #define VENDOR "Kecheng"
 #define USB_INTERFACE 0
 
-static const uint32_t devopts[] = {
+static const uint32_t drvopts[] = {
        SR_CONF_SOUNDLEVELMETER,
+};
+
+static const uint32_t devopts[] = {
        SR_CONF_CONTINUOUS,
        SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
@@ -112,7 +115,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        (void)options;
 
        drvc = di->context;
-       drvc->instances = NULL;
 
        devices = NULL;
        if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) {
@@ -125,7 +127,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                        sdi->status = SR_ST_INACTIVE;
                        sdi->vendor = g_strdup(VENDOR);
                        sdi->model = model; /* Already g_strndup()'d. */
-                       sdi->driver = di;
                        sdi->inst_type = SR_INST_USB;
                        sdi->conn = l->data;
                        sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL");
@@ -143,14 +144,13 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
                        /* TODO: Set date/time? */
 
-                       drvc->instances = g_slist_append(drvc->instances, sdi);
                        devices = g_slist_append(devices, sdi);
                }
                g_slist_free(usb_devices);
        } else
                g_slist_free_full(usb_devices, g_free);
 
-       return devices;
+       return std_scan_complete(di, devices);
 }
 
 static int dev_open(struct sr_dev_inst *sdi)
@@ -174,9 +174,8 @@ static int dev_open(struct sr_dev_inst *sdi)
                sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
                return SR_ERR;
        }
-       sdi->status = SR_ST_ACTIVE;
 
-       return ret;
+       return SR_OK;
 }
 
 static int dev_close(struct sr_dev_inst *sdi)
@@ -187,8 +186,7 @@ static int dev_close(struct sr_dev_inst *sdi)
        usb = sdi->conn;
 
        if (!usb->devhdl)
-               /*  Nothing to do. */
-               return SR_OK;
+               return SR_ERR_BUG;
 
        /* This allows a frontend to configure the device without ever
         * doing an acquisition step. */
@@ -199,7 +197,6 @@ static int dev_close(struct sr_dev_inst *sdi)
        libusb_release_interface(usb->devhdl, USB_INTERFACE);
        libusb_close(usb->devhdl);
        usb->devhdl = NULL;
-       sdi->status = SR_ST_INACTIVE;
 
        return SR_OK;
 }
@@ -259,16 +256,12 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
        struct dev_context *devc;
        uint64_t p, q;
        unsigned int i;
-       int tmp, ret;
+       int tmp;
        const char *tmp_str;
 
        (void)cg;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        devc = sdi->priv;
-       ret = SR_OK;
        switch (key) {
        case SR_CONF_LIMIT_SAMPLES:
                devc->limit_samples = g_variant_get_uint64(data);
@@ -285,7 +278,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                        break;
                }
                if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals))
-                       ret = SR_ERR_ARG;
+                       return SR_ERR_ARG;
                break;
        case SR_CONF_SPL_WEIGHT_FREQ:
                tmp_str = g_variant_get_string(data, NULL);
@@ -322,36 +315,21 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                devc->config_dirty = TRUE;
                break;
        default:
-               ret = SR_ERR_NA;
+               return SR_ERR_NA;
        }
 
-       return ret;
+       return SR_OK;
 }
 
 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
-       GVariant *tuple, *rational[2];
-       GVariantBuilder gvb;
-       unsigned int i;
-
-       (void)sdi;
-       (void)cg;
-
        switch (key) {
        case SR_CONF_DEVICE_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
-               break;
+               return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
        case SR_CONF_SAMPLE_INTERVAL:
-               g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
-               for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
-                       rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]);
-                       rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]);
-                       tuple = g_variant_new_tuple(rational, 2);
-                       g_variant_builder_add_value(&gvb, tuple);
-               }
-               *data = g_variant_builder_end(&gvb);
+               *data = std_gvar_tuple_array(&kecheng_kc_330b_sample_intervals,
+                               ARRAY_SIZE(kecheng_kc_330b_sample_intervals));
                break;
        case SR_CONF_SPL_WEIGHT_FREQ:
                *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
@@ -383,16 +361,13 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
        int req_len, buf_len, len, ret;
        unsigned char buf[9];
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        drvc = di->context;
        devc = sdi->priv;
        usb = sdi->conn;
 
        devc->num_samples = 0;
 
-       std_session_send_df_header(sdi, LOG_PREFIX);
+       std_session_send_df_header(sdi);
 
        if (devc->data_source == DATA_SOURCE_LIVE) {
                /* Force configuration. */
@@ -415,7 +390,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
                devc->stored_samples = (buf[7] << 8) | buf[8];
                if (devc->stored_samples == 0) {
                        /* Notify frontend of empty log by sending start/end packets. */
-                       std_session_send_df_end(sdi, LOG_PREFIX);
+                       std_session_send_df_end(sdi);
                        return SR_OK;
                }
 
@@ -481,9 +456,6 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        /* Signal USB transfer handler to clean up and stop. */
        sdi->status = SR_ST_STOPPING;
 
@@ -509,7 +481,7 @@ static struct sr_dev_driver kecheng_kc_330b_driver_info = {
        .cleanup = std_cleanup,
        .scan = scan,
        .dev_list = std_dev_list,
-       .dev_clear = NULL,
+       .dev_clear = std_dev_clear,
        .config_get = config_get,
        .config_set = config_set,
        .config_list = config_list,