]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/kecheng-kc-330b/api.c
Put driver pointers into special section
[libsigrok.git] / src / hardware / kecheng-kc-330b / api.c
index 71bdc012f690c202f5812cac7d8ca86b380a590f..f67d253238dc1e3dfe88f73085585d6a6d9b55ea 100644 (file)
@@ -17,6 +17,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <config.h>
 #include <string.h>
 #include "protocol.h"
 
 #define VENDOR "Kecheng"
 #define USB_INTERFACE 0
 
-static const int32_t hwcaps[] = {
+static const uint32_t devopts[] = {
        SR_CONF_SOUNDLEVELMETER,
-       SR_CONF_LIMIT_SAMPLES,
        SR_CONF_CONTINUOUS,
-       SR_CONF_DATALOG,
-       SR_CONF_SPL_WEIGHT_FREQ,
-       SR_CONF_SPL_WEIGHT_TIME,
-       SR_CONF_DATA_SOURCE,
+       SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_DATALOG | SR_CONF_GET,
+       SR_CONF_SPL_WEIGHT_FREQ | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_SPL_WEIGHT_TIME | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 };
 
 SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = {
@@ -59,22 +61,14 @@ static const char *data_sources[] = {
        "Memory",
 };
 
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
-static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info;
-
-
-static int init(struct sr_context *sr_ctx)
-{
-       return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static int scan_kecheng(struct sr_usb_dev_inst *usb, char **model)
+static int scan_kecheng(struct sr_dev_driver *di,
+               struct sr_usb_dev_inst *usb, char **model)
 {
        struct drv_context *drvc;
        int len, ret;
        unsigned char cmd, buf[32];
 
-       drvc = di->priv;
+       drvc = di->context;
        if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
                return SR_ERR;
 
@@ -107,18 +101,17 @@ static int scan_kecheng(struct sr_usb_dev_inst *usb, char **model)
        return SR_OK;
 }
 
-static GSList *scan(GSList *options)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
 {
        struct drv_context *drvc;
        struct dev_context *devc;
        struct sr_dev_inst *sdi;
-       struct sr_channel *ch;
        GSList *usb_devices, *devices, *l;
        char *model;
 
        (void)options;
 
-       drvc = di->priv;
+       drvc = di->context;
        drvc->instances = NULL;
 
        devices = NULL;
@@ -126,23 +119,17 @@ static GSList *scan(GSList *options)
                /* We have a list of sr_usb_dev_inst matching the connection
                 * string. Wrap them in sr_dev_inst and we're done. */
                for (l = usb_devices; l; l = l->next) {
-                       if (scan_kecheng(l->data, &model) != SR_OK)
+                       if (scan_kecheng(di, l->data, &model) != SR_OK)
                                continue;
-                       if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR,
-                                       model, NULL)))
-                               return NULL;
-                       g_free(model);
+                       sdi = g_malloc0(sizeof(struct sr_dev_inst));
+                       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;
-                       if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "SPL")))
-                               return NULL;
-                       sdi->channels = g_slist_append(sdi->channels, ch);
-
-                       if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
-                               sr_dbg("Device context malloc failed.");
-                               return NULL;
-                       }
+                       sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL");
+                       devc = g_malloc0(sizeof(struct dev_context));
                        sdi->priv = devc;
                        devc->limit_samples = 0;
                        /* The protocol provides no way to read the current
@@ -166,22 +153,13 @@ static GSList *scan(GSList *options)
        return devices;
 }
 
-static GSList *dev_list(void)
-{
-       return ((struct drv_context *)(di->priv))->instances;
-}
-
 static int dev_open(struct sr_dev_inst *sdi)
 {
-       struct drv_context *drvc;
+       struct sr_dev_driver *di = sdi->driver;
+       struct drv_context *drvc = di->context;
        struct sr_usb_dev_inst *usb;
        int ret;
 
-       if (!(drvc = di->priv)) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        usb = sdi->conn;
 
        if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
@@ -206,11 +184,6 @@ static int dev_close(struct sr_dev_inst *sdi)
        struct dev_context *devc;
        struct sr_usb_dev_inst *usb;
 
-       if (!di->priv) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        usb = sdi->conn;
 
        if (!usb->devhdl)
@@ -231,24 +204,7 @@ static int dev_close(struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
-static int cleanup(void)
-{
-       int ret;
-       struct drv_context *drvc;
-
-       if (!(drvc = di->priv))
-               /* Can get called on an unused driver, doesn't matter. */
-               return SR_OK;
-
-
-       ret = std_dev_clear(di, NULL);
-       g_free(drvc);
-       di->priv = NULL;
-
-       return ret;
-}
-
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
+static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
@@ -297,7 +253,7 @@ static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
        return SR_OK;
 }
 
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
+static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
                const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
@@ -311,11 +267,6 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
-       if (!di->priv) {
-               sr_err("Driver was not initialized.");
-               return SR_ERR;
-       }
-
        devc = sdi->priv;
        ret = SR_OK;
        switch (key) {
@@ -377,7 +328,7 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
        return ret;
 }
 
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+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];
@@ -389,8 +340,8 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 
        switch (key) {
        case SR_CONF_DEVICE_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
-                               hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                               devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
                break;
        case SR_CONF_SAMPLE_INTERVAL:
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
@@ -418,9 +369,9 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
        return SR_OK;
 }
 
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
-               void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 {
+       struct sr_dev_driver *di = sdi->driver;
        struct drv_context *drvc;
        struct dev_context *devc;
        struct sr_datafeed_packet packet;
@@ -429,21 +380,19 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        struct sr_usb_dev_inst *usb;
        GVariant *gvar, *rational[2];
        const uint64_t *si;
-       int stored_mqflags, req_len, buf_len, len, ret;
+       int req_len, buf_len, len, ret;
        unsigned char buf[9];
 
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
-       drvc = di->priv;
+       drvc = di->context;
        devc = sdi->priv;
        usb = sdi->conn;
 
-       devc->cb_data = cb_data;
        devc->num_samples = 0;
 
-       /* Send header packet to the session bus. */
-       std_session_send_df_header(cb_data, LOG_PREFIX);
+       std_session_send_df_header(sdi, LOG_PREFIX);
 
        if (devc->data_source == DATA_SOURCE_LIVE) {
                /* Force configuration. */
@@ -461,13 +410,12 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        } else {
                if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK)
                        return SR_ERR;
-               stored_mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F;
-               stored_mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A;
+               devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F;
+               devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A;
                devc->stored_samples = (buf[7] << 8) | buf[8];
                if (devc->stored_samples == 0) {
                        /* Notify frontend of empty log by sending start/end packets. */
-                       packet.type = SR_DF_END;
-                       sr_session_send(cb_data, &packet);
+                       std_session_send_df_end(sdi, LOG_PREFIX);
                        return SR_OK;
                }
 
@@ -482,7 +430,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
                packet.type = SR_DF_META;
                packet.payload = &meta;
                meta.config = g_slist_append(NULL, src);
-               sr_session_send(devc->cb_data, &packet);
+               sr_session_send(sdi, &packet);
                g_free(src);
        }
 
@@ -529,12 +477,10 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        return SR_OK;
 }
 
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
 
-       (void)cb_data;
-
        if (sdi->status != SR_ST_ACTIVE)
                return SR_ERR_DEV_CLOSED;
 
@@ -555,14 +501,14 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
        return SR_OK;
 }
 
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
+static struct sr_dev_driver kecheng_kc_330b_driver_info = {
        .name = "kecheng-kc-330b",
        .longname = "Kecheng KC-330B",
        .api_version = 1,
-       .init = init,
-       .cleanup = cleanup,
+       .init = std_init,
+       .cleanup = std_cleanup,
        .scan = scan,
-       .dev_list = dev_list,
+       .dev_list = std_dev_list,
        .dev_clear = NULL,
        .config_get = config_get,
        .config_set = config_set,
@@ -571,5 +517,6 @@ SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
        .dev_close = dev_close,
        .dev_acquisition_start = dev_acquisition_start,
        .dev_acquisition_stop = dev_acquisition_stop,
-       .priv = NULL,
+       .context = NULL,
 };
+SR_REGISTER_DEV_DRIVER(kecheng_kc_330b_driver_info);