X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fbaylibre-acme%2Fprotocol.c;h=f8fdb595435a21a49dc18fa6dcb03fcc9e16b331;hb=aae2273b99b9155ea1b91bc65eb4c91e06e3c8e2;hp=656e89fec6c3e140a5bbb7909ce6203d64344422;hpb=d0148a506ed1007518704d72c0410d4361668fa4;p=libsigrok.git

diff --git a/src/hardware/baylibre-acme/protocol.c b/src/hardware/baylibre-acme/protocol.c
index 656e89fe..f8fdb595 100644
--- a/src/hardware/baylibre-acme/protocol.c
+++ b/src/hardware/baylibre-acme/protocol.c
@@ -245,6 +245,20 @@ SR_PRIV gboolean bl_acme_register_probe(struct sr_dev_inst *sdi, int type,
 	return TRUE;
 }
 
+SR_PRIV int bl_acme_get_probe_type(const struct sr_channel_group *cg)
+{
+	struct channel_group_priv *cgp = cg->priv;
+
+	return cgp->probe_type;
+}
+
+SR_PRIV int bl_acme_probe_has_pws(const struct sr_channel_group *cg)
+{
+	struct channel_group_priv *cgp = cg->priv;
+
+	return sr_gpio_getval_export(pws_info_gpios[cgp->index]);
+}
+
 /*
  * Sets path to the hwmon attribute if this channel group
  * supports shunt resistance setting. The caller has to supply
@@ -281,6 +295,43 @@ static int get_shunt_path(const struct sr_channel_group *cg, GString *path)
 	return ret;
 }
 
+/*
+ * Try setting the update_interval sysfs attribute for each probe according
+ * to samplerate.
+ */
+SR_PRIV void bl_acme_maybe_set_update_interval(const struct sr_dev_inst *sdi,
+					       uint64_t samplerate)
+{
+	struct sr_channel_group *cg;
+	struct channel_group_priv *cgp;
+	GString *hwmon;
+	GSList *l;
+	FILE *fd;
+
+	for (l = sdi->channel_groups; l != NULL; l = l->next) {
+		cg = l->data;
+		cgp = cg->priv;
+
+		hwmon = g_string_sized_new(64);
+		g_string_append_printf(hwmon,
+				"/sys/class/hwmon/hwmon%d/update_interval",
+				cgp->hwmon_num);
+
+		if (g_file_test(hwmon->str, G_FILE_TEST_EXISTS)) {
+			fd = g_fopen(hwmon->str, "w");
+			if (!fd) {
+				g_string_free(hwmon, TRUE);
+				continue;
+			}
+
+			g_fprintf(fd, "%" PRIu64 "\n", 1000 / samplerate);
+			fclose(fd);
+		}
+
+		g_string_free(hwmon, TRUE);
+	}
+}
+
 SR_PRIV int bl_acme_get_shunt(const struct sr_channel_group *cg,
 			      uint64_t *shunt)
 {
@@ -348,8 +399,7 @@ SR_PRIV int bl_acme_read_power_state(const struct sr_channel_group *cg,
 
 	cgp = cg->priv;
 
-	val = sr_gpio_getval_export(pws_info_gpios[cgp->index]);
-	if (val != 1) {
+	if (!bl_acme_probe_has_pws(cg)) {
 		sr_err("Probe has no power-switch");
 		return SR_ERR_ARG;
 	}
@@ -368,13 +418,17 @@ SR_PRIV int bl_acme_set_power_off(const struct sr_channel_group *cg,
 
 	cgp = cg->priv;
 
-	val = sr_gpio_getval_export(pws_info_gpios[cgp->index]);
-	if (val != 1) {
+	if (!bl_acme_probe_has_pws(cg)) {
 		sr_err("Probe has no power-switch");
 		return SR_ERR_ARG;
 	}
 
 	val = sr_gpio_setval_export(pws_gpios[cgp->index], off ? 0 : 1);
+	if (val < 0) {
+		sr_err("Error setting power-off state: gpio: %d",
+		       pws_gpios[cgp->index]);
+		return SR_ERR_IO;
+	}
 
 	return SR_OK;
 }