Allow to remotely cut the power at ACME probe level.
Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
---
src/hardware/baylibre-acme/api.c | 14 ++++++++++
src/hardware/baylibre-acme/protocol.c | 50 +++++++++++++++++++++++++++++++++++
src/hardware/baylibre-acme/protocol.h | 4 +++
3 files changed, 68 insertions(+)
diff --git a/src/hardware/baylibre-acme/api.c b/src/hardware/baylibre-acme/api.c
index 201f934..1fda2b2 100644
--- a/src/hardware/baylibre-acme/api.c
+++ b/src/hardware/baylibre-acme/api.c
@@ -28,6 +28,7 @@ static const uint32_t devopts[] = {
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,
};
#define MAX_SAMPLE_RATE 500 /* In Hz */
@@ -170,6 +171,7 @@ static int config_get(uint32_t key, GVariant **data,
struct dev_context *devc;
int ret;
uint64_t shunt;
+ gboolean power_off;
devc = sdi->priv;
@@ -191,6 +193,13 @@ static int config_get(uint32_t key, GVariant **data,
if (ret == SR_OK)
*data = g_variant_new_uint64(shunt);
break;
+ case SR_CONF_POWER_OFF:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ ret = bl_acme_read_power_state(cg, &power_off);
+ if (ret == SR_OK)
+ *data = g_variant_new_boolean(power_off);
+ break;
default:
return SR_ERR_NA;
}
@@ -239,6 +248,11 @@ static int config_set(uint32_t key, GVariant *data,
return SR_ERR_CHANNEL_GROUP;
ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
break;
+ case SR_CONF_POWER_OFF:
+ if (!cg)
+ return SR_ERR_CHANNEL_GROUP;
+ ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
+ break;
default:
ret = SR_ERR_NA;
}
diff --git a/src/hardware/baylibre-acme/protocol.c
b/src/hardware/baylibre-acme/protocol.c
index 22af9f9..419a9eb 100644
--- a/src/hardware/baylibre-acme/protocol.c
+++ b/src/hardware/baylibre-acme/protocol.c
@@ -23,10 +23,12 @@
#include <fcntl.h> /* open(), etc... */
#include <glib/gstdio.h>
#include "protocol.h"
+#include "gpio.h"
struct channel_group_priv {
int hwmon_num;
int probe_type;
+ int index;
};
struct channel_priv {
@@ -42,6 +44,14 @@ static const uint8_t temp_i2c_addrs[] = {
0x0, 0x0, 0x0, 0x0, 0x4c, 0x49, 0x4f, 0x4b,
};
+static const uint32_t pws_gpios[] = {
+ 486, 498, 502, 482, 478, 506, 510, 474
+};
+
+static const uint32_t pws_info_gpios[] = {
+ 487, 499, 503, 483, 479, 507, 511, 475,
+};
+
#define MOHM_TO_UOHM(x) ((x) * 1000)
#define UOHM_TO_MOHM(x) ((x) / 1000)
@@ -218,6 +228,7 @@ SR_PRIV gboolean bl_acme_register_probe(struct sr_dev_inst
*sdi, int type,
cgp = g_malloc0(sizeof(struct channel_group_priv));
cgp->hwmon_num = hwmon;
cgp->probe_type = type;
+ cgp->index = prb_num - 1;
cg->name = g_strdup_printf("Probe_%d", prb_num);
cg->priv = cgp;
@@ -339,6 +350,45 @@ out:
return ret;
}
+SR_PRIV int bl_acme_read_power_state(const struct sr_channel_group *cg,
+ gboolean *off)
+{
+ struct channel_group_priv *cgp;
+ int val;
+
+ cgp = cg->priv;
+
+ val = sr_gpio_getval_export(pws_info_gpios[cgp->index]);
+ if (val != 1) {
+ sr_err("Probe has no power-switch");
+ return SR_ERR_ARG;
+ }
+
+ val = sr_gpio_getval_export(pws_gpios[cgp->index]);
+ *off = val ? FALSE : TRUE;
+
+ return SR_OK;
+}
+
+SR_PRIV int bl_acme_set_power_off(const struct sr_channel_group *cg,
+ gboolean off)
+{
+ struct channel_group_priv *cgp;
+ int val;
+
+ cgp = cg->priv;
+
+ val = sr_gpio_getval_export(pws_info_gpios[cgp->index]);
+ if (val != 1) {
+ sr_err("Probe has no power-switch");
+ return SR_ERR_ARG;
+ }
+
+ val = sr_gpio_setval_export(pws_gpios[cgp->index], off ? 0 : 1);
+
+ return SR_OK;
+}
+
static int channel_to_mq(struct sr_channel *ch)
{
struct channel_priv *chp;
diff --git a/src/hardware/baylibre-acme/protocol.h
b/src/hardware/baylibre-acme/protocol.h
index b70182c..6e65772 100644
--- a/src/hardware/baylibre-acme/protocol.h
+++ b/src/hardware/baylibre-acme/protocol.h
@@ -85,6 +85,10 @@ SR_PRIV int bl_acme_get_shunt(const struct sr_channel_group
*cg,
uint64_t *shunt);
SR_PRIV int bl_acme_set_shunt(const struct sr_channel_group *cg,
uint64_t shunt);
+SR_PRIV int bl_acme_read_power_state(const struct sr_channel_group *cg,
+ gboolean *off);
+SR_PRIV int bl_acme_set_power_off(const struct sr_channel_group *cg,
+ gboolean off);
SR_PRIV int bl_acme_receive_data(int fd, int revents, void *cb_data);
--
2.1.4
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