baylibre-acme: Dynamically check per probe config options.

[libsigrok.git] / src / hardware / baylibre-acme / api.c

diff --git a/src/hardware/baylibre-acme/api.c b/src/hardware/baylibre-acme/api.c
index 0aae8c94b26e741f16966fb87fc9e484bd7be401..85f474cf3ca66fcda15c30aa56dbc18c74a33d09 100644 (file)
--- a/src/hardware/baylibre-acme/api.c
+++ b/src/hardware/baylibre-acme/api.c
@@ -20,17 +20,28 @@
 #include "protocol.h"
 
 SR_PRIV struct sr_dev_driver baylibre_acme_driver_info;
-static struct sr_dev_driver *di = &baylibre_acme_driver_info;
 
 static const uint32_t devopts[] = {
        SR_CONF_CONTINUOUS | SR_CONF_SET,
        SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
-       SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET,
-       SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
 };
 
+/*
+ * Currently there are two channel-group/probe options for ACME:
+ *   - SR_CONF_PROBE_FACTOR - allows to modify current shunt resistance
+ *     calibration
+ *   - SR_CONF_POWER_OFF - allows to remotely cut-off/restore power to
+ *     measured devices
+ *
+ * They are not static - we have to check each probe's capabilities in
+ * config_list().
+ */
+#define MAX_DEVOPTS_CG         2
+#define HAS_PROBE_FACTOR       (SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET)
+#define HAS_POWER_OFF          (SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET)
+
 #define MAX_SAMPLE_RATE 500 /* In Hz */
 
 static const uint64_t samplerates[] = {
@@ -39,12 +50,12 @@ static const uint64_t samplerates[] = {
        SR_HZ(1),
 };
 
-static int init(struct sr_context *sr_ctx)
+static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
        return std_init(sr_ctx, di, LOG_PREFIX);
 }
 
-static GSList *scan(GSList *options)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
 {
        struct drv_context *drvc;
        struct dev_context *devc;
@@ -113,7 +124,7 @@ static GSList *scan(GSList *options)
         * Let's assume there's no ACME device present if no probe
         * has been registered.
         */
-       if (sdi->channel_groups == NULL)
+       if (!sdi->channel_groups)
                goto err_out;
 
        devices = g_slist_append(devices, sdi);
@@ -128,12 +139,12 @@ err_out:
        return NULL;
 }
 
-static GSList *dev_list(void)
+static GSList *dev_list(const struct sr_dev_driver *di)
 {
        return ((struct drv_context *)(di->priv))->instances;
 }
 
-static int dev_clear(void)
+static int dev_clear(const struct sr_dev_driver *di)
 {
        return std_dev_clear(di, NULL);
 }
@@ -158,9 +169,9 @@ static int dev_close(struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
-static int cleanup(void)
+static int cleanup(const struct sr_dev_driver *di)
 {
-       dev_clear();
+       dev_clear(di);
 
        return SR_OK;
 }
@@ -226,12 +237,10 @@ static int config_set(uint32_t key, GVariant *data,
        case SR_CONF_LIMIT_SAMPLES:
                devc->limit_samples = g_variant_get_uint64(data);
                devc->limit_msec = 0;
-               sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
                break;
        case SR_CONF_LIMIT_MSEC:
                devc->limit_msec = g_variant_get_uint64(data) * 1000;
                devc->limit_samples = 0;
-               sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
                break;
        case SR_CONF_SAMPLERATE:
                samplerate = g_variant_get_uint64(data);
@@ -241,7 +250,6 @@ static int config_set(uint32_t key, GVariant *data,
                        break;
                }
                devc->samplerate = samplerate;
-               sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
                break;
        case SR_CONF_PROBE_FACTOR:
                if (!cg)
@@ -264,28 +272,46 @@ static int config_list(uint32_t key, GVariant **data,
                       const struct sr_dev_inst *sdi,
                       const struct sr_channel_group *cg)
 {
+       uint32_t devopts_cg[MAX_DEVOPTS_CG];
        GVariant *gvar;
        GVariantBuilder gvb;
-       int ret;
+       int ret, num_devopts_cg = 0;
 
        (void)sdi;
        (void)cg;
 
        ret = SR_OK;
-       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;
-       case SR_CONF_SAMPLERATE:
-               g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
-               gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
-                       samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
-               g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
-               *data = g_variant_builder_end(&gvb);
-               break;
-       default:
-               return SR_ERR_NA;
+       if (!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;
+               case SR_CONF_SAMPLERATE:
+                       g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+                       gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
+                               samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
+                       g_variant_builder_add(&gvb, "{sv}",
+                                             "samplerate-steps", gvar);
+                       *data = g_variant_builder_end(&gvb);
+                       break;
+               default:
+                       return SR_ERR_NA;
+               }
+       } else {
+               switch (key) {
+               case SR_CONF_DEVICE_OPTIONS:
+                       if (bl_acme_get_probe_type(cg) == PROBE_ENRG)
+                               devopts_cg[num_devopts_cg++] = HAS_PROBE_FACTOR;
+                       if (bl_acme_probe_has_pws(cg))
+                               devopts_cg[num_devopts_cg++] = HAS_POWER_OFF;
+
+                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                               devopts_cg, num_devopts_cg, sizeof(uint32_t));
+                       break;
+               default:
+                       return SR_ERR_NA;
+               }
        }
 
        return ret;