]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/motech-lps-30x/api.c
drivers: Provide proper drvopts.
[libsigrok.git] / src / hardware / motech-lps-30x / api.c
index 1304e1c5d72aba7988728ae5a7833ae0bf2244e0..d5a834f7e972376c093f7426dc1cb0e1f138d322 100644 (file)
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/** @file
- *  <em>Motech LPS-30x series</em> power supply driver
- *  @internal
+/**
+ * @file
+ *
+ * <em>Motech LPS-30x series</em> power supply driver
+ *
+ * @internal
  */
 
+#include <config.h>
 #include <ctype.h>
-#include <errno.h>
 #include <math.h>
 #include <string.h>
-
 #include "protocol.h"
 
-/* Forward declarations */
-SR_PRIV struct sr_dev_driver motech_lps_301_driver_info;
 SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen);
-SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const charfmt, va_list args);
-SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const charfmt, ...);
-SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...);
-SR_PRIV int lps_query_status(struct sr_dev_instsdi);
+SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char *fmt, va_list args);
+SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char *fmt, ...);
+SR_PRIV int lps_cmd_reply(char *reply, struct sr_serial_dev_inst *serial, const char *fmt, ...);
+SR_PRIV int lps_query_status(struct sr_dev_inst *sdi);
 
 /* Serial communication parameters */
 #define SERIALCOMM "2400/8n1/dtr=1/rts=1/flow=0"
@@ -49,31 +49,36 @@ static const uint32_t scanopts[] = {
        SR_CONF_SERIALCOMM,
 };
 
+/** Driver capabilities generic. */
+static const uint32_t drvopts[] = {
+       /* Device class */
+       SR_CONF_POWER_SUPPLY,
+};
+
 /** Hardware capabilities generic. */
 static const uint32_t devopts[] = {
        /* Device class */
-       SR_CONF_POWER_SUPPLY,
-       /* Aquisition modes. */
+       /* Acquisition modes. */
        SR_CONF_CONTINUOUS,
        SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
        SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
        /* Device configuration */
-       SR_CONF_OUTPUT_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 };
 
 /** Hardware capabilities channel 1, 2. */
 static const uint32_t devopts_ch12[] = {
-       SR_CONF_OUTPUT_VOLTAGE | SR_CONF_GET,
-       SR_CONF_OUTPUT_VOLTAGE_MAX | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
-       SR_CONF_OUTPUT_CURRENT | SR_CONF_GET,
-       SR_CONF_OUTPUT_CURRENT_MAX | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
-       SR_CONF_OUTPUT_ENABLED | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_VOLTAGE | SR_CONF_GET,
+       SR_CONF_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_CURRENT | SR_CONF_GET,
+       SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
 };
 
 /** Hardware capabilities channel 3. (LPS-304/305 only). */
 static const uint32_t devopts_ch3[] = {
-       SR_CONF_OUTPUT_VOLTAGE | SR_CONF_GET,
-       SR_CONF_OUTPUT_ENABLED | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_VOLTAGE | SR_CONF_GET,
+       SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
 };
 
 static const char *channel_modes[] = {
@@ -82,7 +87,7 @@ static const char *channel_modes[] = {
        "Track2",
 };
 
-static struct lps_modelspec models[] = {
+static const struct lps_modelspec models[] = {
        { LPS_UNKNOWN, "Dummy", 0,
                {
 
@@ -128,14 +133,9 @@ static struct lps_modelspec models[] = {
        },
 };
 
-static int init_lps301(struct sr_context *sr_ctx)
-{
-       return std_init(sr_ctx, &motech_lps_301_driver_info, LOG_PREFIX);
-}
-
 /** Send command to device with va_list.
  */
-SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const charfmt, va_list args)
+SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char *fmt, va_list args)
 {
        int retc;
        char auxfmt[LINELEN_MAX];
@@ -146,7 +146,8 @@ SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_l
 
        sr_spew("lps_send_va: \"%s\"", buf);
 
-       retc = serial_write_nonblocking(serial, buf, strlen(buf));
+       retc = serial_write_blocking(serial, buf, strlen(buf),
+                       serial_timeout(serial, strlen(buf)));
 
        if (retc < 0)
                return SR_ERR;
@@ -156,7 +157,7 @@ SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_l
 
 /** Send command to device.
  */
-SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const charfmt, ...)
+SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char *fmt, ...)
 {
        int retc;
        va_list args;
@@ -169,13 +170,13 @@ SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char* fmt, ...
 }
 
 /** Send command and consume simple OK reply. */
-SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const charfmt, ...)
+SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char *fmt, ...)
 {
        int retc;
        va_list args;
        char buf[LINELEN_MAX];
-       charbufptr;
-       int  buflen;
+       char *bufptr;
+       int buflen;
 
        /* Send command */
        va_start(args, fmt);
@@ -196,16 +197,17 @@ SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char* fmt, ...)
        return SR_ERR;
 }
 
-/** Send command and read reply string.
- *  \param reply Pointer to buffer of size LINELEN_MAX. Will be NUL-terminated.
+/**
+ * Send command and read reply string.
+ * @param reply Pointer to buffer of size LINELEN_MAX. Will be NUL-terminated.
  */
-SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...)
+SR_PRIV int lps_cmd_reply(char *reply, struct sr_serial_dev_inst *serial, const char *fmt, ...)
 {
        int retc;
        va_list args;
        char buf[LINELEN_MAX];
-       charbufptr;
-       int  buflen;
+       char *bufptr;
+       int buflen;
 
        reply[0] = '\0';
 
@@ -231,12 +233,12 @@ SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const
 }
 
 /** Process integer value returned by STATUS command. */
-SR_PRIV int lps_process_status(struct sr_dev_instsdi, int stat)
+SR_PRIV int lps_process_status(struct sr_dev_inst *sdi, int stat)
 {
-       struct dev_contextdevc;
+       struct dev_context *devc;
        int tracking_mode;
 
-       devc = (struct dev_context*)sdi->priv;
+       devc = sdi->priv;
 
        sr_spew("Status: %d", stat);
        devc->channel_status[0].cc_mode = (stat & 0x01) != 0;
@@ -277,18 +279,19 @@ SR_PRIV int lps_process_status(struct sr_dev_inst* sdi, int stat)
 }
 
 /** Send STATUS commend and process status string. */
-SR_PRIV int lps_query_status(struct sr_dev_instsdi)
+SR_PRIV int lps_query_status(struct sr_dev_inst *sdi)
 {
        char buf[LINELEN_MAX];
-       int stat;
-       struct dev_contextdevc;
+       int stat, ret;
+       struct dev_context *devc;
 
-       devc = (struct dev_context*)sdi->priv;
+       devc = sdi->priv;
 
        devc->req_sent_at = g_get_real_time();
 
-       if (lps_cmd_reply(buf, sdi->conn, "STATUS") < 0) {
-               sr_err("%s: Failed to read status: %d %s", __func__, errno, strerror(errno));
+       if ((ret = lps_cmd_reply(buf, sdi->conn, "STATUS")) < 0) {
+               sr_err("%s: Failed to read status: %s.", __func__,
+                       sr_strerror(ret));
                return SR_ERR;
        }
 
@@ -308,9 +311,11 @@ static gint64 calc_timeout_ms(gint64 start_us)
        return result;
 }
 
-/** Read message into buf until "OK" received.
- *  \retval SR_OK Msg received; buf and buflen contain result, if any except OK.
- *  \retval SR_ERR Error, including timeout.
+/**
+ * Read message into buf until "OK" received.
+ *
+ * @retval SR_OK Msg received; buf and buflen contain result, if any except OK.
+ * @retval SR_ERR Error, including timeout.
 */
 SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen)
 {
@@ -367,27 +372,19 @@ SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *b
 static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *options)
 {
        struct sr_dev_inst *sdi;
-       struct drv_context *drvc;
        struct dev_context *devc;
        struct sr_serial_dev_inst *serial;
        struct sr_channel *ch;
        struct sr_channel_group *cg;
-       GSList *devices;
        const char *conn, *serialcomm;
-       int cnt;
-       gchar  buf[LINELEN_MAX];
+       int cnt, ret;
+       gchar buf[LINELEN_MAX];
        gchar channel[10];
-       char*  verstr;
+       char *verstr;
 
        sdi = NULL;
        devc = NULL;
        conn = serialcomm = NULL;
-       devices = NULL;
-
-       drvc = drv->priv;
-       drvc->instances = NULL;
-
-       sr_spew("scan() called!");
 
        /* Process and check options. */
        if (sr_serial_extract_options(options, &conn, &serialcomm) != SR_OK)
@@ -396,10 +393,9 @@ static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *o
                serialcomm = SERIALCOMM;
 
        /* Init serial port. */
-       if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
-               return NULL;
+       serial = sr_serial_dev_inst_new(conn, serialcomm);
 
-       if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+       if (serial_open(serial, SERIAL_RDWR) != SR_OK)
                goto exit_err;
 
        /* Query and verify model string. */
@@ -430,39 +426,38 @@ static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *o
 
        /* Query version */
        verstr = NULL;
-       if (lps_cmd_reply(buf, serial, "VERSION") == SR_OK) {
+       if ((ret = lps_cmd_reply(buf, serial, "VERSION")) == SR_OK) {
                if (strncmp(buf, "Ver-", 4)) {
                        sr_spew("Version string %s not recognized.", buf);
                        goto exit_err;
                }
 
-
                g_strstrip(buf);
                verstr = buf + 4;
        }
-       else  /* Bug in device FW 1.17: Quering version string fails while output is active.
+       else /* Bug in device FW 1.17: Querying version string fails while output is active.
                Therefore just print an error message, but do not exit with error. */
-               sr_err("Failed to query for hardware version: %d %s", errno, strerror(errno));
-
-       sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR_MOTECH, models[modelid].modelstr, verstr);
-       sdi->driver = drv;
+               sr_err("Failed to query for hardware version: %s.",
+                       sr_strerror(ret));
+
+       sdi = g_malloc0(sizeof(struct sr_dev_inst));
+       sdi->status = SR_ST_INACTIVE;
+       sdi->vendor = g_strdup(VENDOR_MOTECH);
+       sdi->model = g_strdup(models[modelid].modelstr);
+       sdi->version = g_strdup(verstr);
        sdi->inst_type = SR_INST_SERIAL;
        sdi->conn = serial;
 
        devc = g_malloc0(sizeof(struct dev_context));
+       sr_sw_limits_init(&devc->limits);
        devc->model = &models[modelid];
-       devc->limit_samples = 0;
-       devc->limit_msec = 0;
-       devc->num_samples = 0;
-       devc->elapsed_msec = g_timer_new();
 
        sdi->priv = devc;
 
        /* Setup channels and channel groups. */
        for (cnt = 0; cnt < models[modelid].num_channels; cnt++) {
                snprintf(channel, sizeof(channel), "CH%d", cnt + 1);
-               ch = sr_channel_new(cnt, SR_CHANNEL_ANALOG, TRUE, channel);
-               sdi->channels = g_slist_append(sdi->channels, ch);
+               ch = sr_channel_new(sdi, cnt, SR_CHANNEL_ANALOG, TRUE, channel);
 
                devc->channel_status[cnt].info = g_slist_append(NULL, ch);
 
@@ -475,69 +470,44 @@ static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *o
                sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
        }
 
-       drvc->instances = g_slist_append(drvc->instances, sdi);
-       devices = g_slist_append(devices, sdi);
-
        /* Query status */
        if (lps_query_status(sdi) != SR_OK)
                goto exit_err;
 
        serial_close(serial);
-       if (!devices)
-               sr_serial_dev_inst_free(serial);
 
-       return devices;
+       return std_scan_complete(drv, g_slist_append(NULL, sdi));
 
 exit_err:
        sr_info("%s: Error!", __func__);
 
-       if (serial) {
+       if (serial)
                serial_close(serial);
-               sr_serial_dev_inst_free(serial);
-       }
-       if (devc)
-               g_free(devc);
-       if (sdi)
-               sr_dev_inst_free(sdi);
+       sr_serial_dev_inst_free(serial);
+       g_free(devc);
+       sr_dev_inst_free(sdi);
 
        return NULL;
 }
 
 /** Scan for LPS-301 device. */
-static GSList *scan_lps301(GSList *options)
-{
-       return do_scan(LPS_301, &motech_lps_301_driver_info, options);
-}
-
-static GSList *doDevList(struct sr_dev_driver *drv)
-{
-       return ((struct drv_context *)(drv->priv))->instances;
-}
-
-static GSList *dev_list_lps301(void)
+static GSList *scan_lps301(struct sr_dev_driver *di, GSList *options)
 {
-       return doDevList(&motech_lps_301_driver_info);
+       return do_scan(LPS_301, di, options);
 }
 
-static void dev_clear_private(struct dev_context* devc)
+static void clear_helper(struct dev_context *devc)
 {
        int ch_idx;
 
        /* Free channel_status.info (list only, data owned by sdi). */
        for (ch_idx = 0; ch_idx < devc->model->num_channels; ch_idx++)
                g_slist_free(devc->channel_status[ch_idx].info);
-
-       g_timer_destroy(devc->elapsed_msec);
-}
-
-static int dev_clear_lps301(void)
-{
-       return std_dev_clear(&motech_lps_301_driver_info, (std_dev_clear_callback)dev_clear_private);
 }
 
-static int cleanup(void)
+static int dev_clear(const struct sr_dev_driver *di)
 {
-       return dev_clear_lps301();
+       return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 }
 
 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
@@ -556,12 +526,9 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                /* No channel group: global options. */
                switch (key) {
                case SR_CONF_LIMIT_SAMPLES:
-                       *data = g_variant_new_uint64(devc->limit_samples);
-                       break;
                case SR_CONF_LIMIT_MSEC:
-                       *data = g_variant_new_uint64(devc->limit_msec);
-                       break;
-               case SR_CONF_OUTPUT_CHANNEL_CONFIG:
+                       return sr_sw_limits_config_get(&devc->limits, key, data);
+               case SR_CONF_CHANNEL_CONFIG:
                        *data = g_variant_new_string(channel_modes[devc->tracking_mode]);
                        break;
                default:
@@ -572,19 +539,19 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                ch = cg->channels->data;
                ch_idx = ch->index;
                switch (key) {
-               case SR_CONF_OUTPUT_VOLTAGE:
+               case SR_CONF_VOLTAGE:
                        *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_last);
                        break;
-               case SR_CONF_OUTPUT_VOLTAGE_MAX:
+               case SR_CONF_VOLTAGE_TARGET:
                        *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_max);
                        break;
-               case SR_CONF_OUTPUT_CURRENT:
+               case SR_CONF_CURRENT:
                        *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_last);
                        break;
-               case SR_CONF_OUTPUT_CURRENT_MAX:
+               case SR_CONF_CURRENT_LIMIT:
                        *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_max);
                        break;
-               case SR_CONF_OUTPUT_ENABLED:
+               case SR_CONF_ENABLED:
                        *data = g_variant_new_boolean(devc->channel_status[ch_idx].output_enabled);
                        break;
                default:
@@ -607,9 +574,6 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
        int idx;
        gboolean found;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        devc = sdi->priv;
 
        /* Cannot change settings while acquisition active, would cause a mess with commands.
@@ -621,24 +585,12 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                /* No channel group: global options. */
                switch (key) {
                case SR_CONF_LIMIT_MSEC:
-                       if (g_variant_get_uint64(data) == 0) {
-                               sr_err("LIMIT_MSEC can't be 0.");
-                               return SR_ERR;
-                       }
-                       devc->limit_msec = g_variant_get_uint64(data);
-                       sr_dbg("Setting time limit to %" PRIu64 "ms.",
-                               devc->limit_msec);
-                       break;
                case SR_CONF_LIMIT_SAMPLES:
-                       devc->limit_samples = g_variant_get_uint64(data);
-                       sr_dbg("Setting sample limit to %" PRIu64 ".",
-                               devc->limit_samples);
-                       break;
-               case SR_CONF_OUTPUT_CHANNEL_CONFIG:
+                       return sr_sw_limits_config_set(&devc->limits, key, data);
+               case SR_CONF_CHANNEL_CONFIG:
                        sval = g_variant_get_string(data, NULL);
                        found = FALSE;
-                       for (idx = 0; idx < (int)ARRAY_SIZE(channel_modes); idx++)
-                       {
+                       for (idx = 0; idx < (int)ARRAY_SIZE(channel_modes); idx++) {
                                if (!strcmp(sval, channel_modes[idx])) {
                                        found = TRUE;
                                        if (devc->tracking_mode == idx)
@@ -650,9 +602,8 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                                if (devc->model->modelid <= LPS_303) /* Only first setting possible for smaller models. */
                                        break;
                        }
-                       if (!found) {
+                       if (!found)
                                return SR_ERR_ARG;
-                       }
                        break;
                default:
                        return SR_ERR_NA;
@@ -664,7 +615,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                ch_idx = ch->index;
 
                switch (key) {
-               case SR_CONF_OUTPUT_VOLTAGE_MAX:
+               case SR_CONF_VOLTAGE_TARGET:
                        dval = g_variant_get_double(data);
                        if (dval < 0 || dval > devc->model->channels[ch_idx].voltage[1])
                                return SR_ERR_ARG;
@@ -685,7 +636,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                        else
                                return lps_cmd_ok(sdi->conn, "VSET%d %05.3f", ch_idx+1, dval);
                        break;
-               case SR_CONF_OUTPUT_CURRENT_MAX:
+               case SR_CONF_CURRENT_LIMIT:
                        dval = g_variant_get_double(data);
                        if (dval < 0 || dval > devc->model->channels[ch_idx].current[1])
                                return SR_ERR_ARG;
@@ -694,7 +645,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
                        devc->channel_status[ch_idx].output_current_max = dval;
                        return lps_cmd_ok(sdi->conn, "ISET%d %05.4f", ch_idx+1, dval);
                        break;
-               case SR_CONF_OUTPUT_ENABLED:
+               case SR_CONF_ENABLED:
                        bval = g_variant_get_boolean(data);
                        if (bval == devc->channel_status[ch_idx].output_enabled) /* Nothing to do. */
                                break;
@@ -726,29 +677,15 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
        GVariant *gvar;
        GVariantBuilder gvb;
 
-       (void)data;
-
-       /* Driver options, no device instance necessary. */
-       switch (key) {
-       case SR_CONF_SCAN_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
-               return SR_OK;
-       default:
-               if (sdi == NULL)
-                       return SR_ERR_ARG;
-
-               devc = sdi->priv;
-       }
+       devc = (sdi) ? sdi->priv : NULL;
 
        /* Device options, independent from channel groups. */
-       if (cg == NULL) {
+       if (!cg) {
                switch (key) {
+               case SR_CONF_SCAN_OPTIONS:
                case SR_CONF_DEVICE_OPTIONS:
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                       devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
-                       return SR_OK;
-               case SR_CONF_OUTPUT_CHANNEL_CONFIG:
+                       return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
+               case SR_CONF_CHANNEL_CONFIG:
                        if (devc->model->modelid <= LPS_303) {
                                /* The 1-channel models. */
                                *data = g_variant_new_strv(channel_modes, 1);
@@ -757,7 +694,6 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
                                *data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
                        }
                        return SR_OK;
-                       break;
                default:
                        return SR_ERR_NA;
                }
@@ -770,12 +706,12 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
        case SR_CONF_DEVICE_OPTIONS:
                if ((ch_idx == 0) || (ch_idx == 1)) /* CH1, CH2 */
                        *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                 devopts_ch12, ARRAY_SIZE(devopts_ch12), sizeof(uint32_t));
+                               devopts_ch12, ARRAY_SIZE(devopts_ch12), sizeof(uint32_t));
                else /* Must be CH3 */
                        *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                                 devopts_ch3, ARRAY_SIZE(devopts_ch3), sizeof(uint32_t));
+                               devopts_ch3, ARRAY_SIZE(devopts_ch3), sizeof(uint32_t));
                break;
-       case SR_CONF_OUTPUT_VOLTAGE_MAX:
+       case SR_CONF_VOLTAGE_TARGET:
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
                /* Min, max, step. */
                for (i = 0; i < 3; i++) {
@@ -784,7 +720,7 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
                }
                *data = g_variant_builder_end(&gvb);
                break;
-       case SR_CONF_OUTPUT_CURRENT_MAX:
+       case SR_CONF_CURRENT_LIMIT:
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
                /* Min, max, step. */
                for (i = 0; i < 3; i++) {
@@ -800,15 +736,11 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
        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 dev_context *devc;
        struct sr_serial_dev_inst *serial;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        devc = sdi->priv;
 
        devc->acq_running = TRUE;
@@ -816,11 +748,9 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi,
        serial = sdi->conn;
        serial_source_add(sdi->session, serial, G_IO_IN, 50,
                        motech_lps_30x_receive_data, (void *)sdi);
-       std_session_send_df_header(cb_data, LOG_PREFIX);
+       std_session_send_df_header(sdi);
 
-       /* Start timer, if required. */
-       if (devc->limit_msec)
-               g_timer_start(devc->elapsed_msec);
+       sr_sw_limits_acquisition_start(&devc->limits);
 
        devc->acq_req = AQ_NONE;
        /* Do not start polling device here, the read function will do it in 50 ms. */
@@ -828,33 +758,22 @@ 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)
-{
-       struct dev_context *devc;
-
-       /* Stop timer, if required. */
-       if (sdi && (devc = sdi->priv) && devc->limit_msec)
-               g_timer_stop(devc->elapsed_msec);
-
-       return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
-                       sdi->conn, LOG_PREFIX);
-}
-
-SR_PRIV struct sr_dev_driver motech_lps_301_driver_info = {
+static struct sr_dev_driver motech_lps_301_driver_info = {
        .name = "motech-lps-301",
        .longname = "Motech LPS-301",
        .api_version = 1,
-       .init = init_lps301,
-       .cleanup = cleanup,
+       .init = std_init,
+       .cleanup = std_cleanup,
        .scan = scan_lps301,
-       .dev_list = dev_list_lps301,
-       .dev_clear = dev_clear_lps301,
+       .dev_list = std_dev_list,
+       .dev_clear = dev_clear,
        .config_get = config_get,
        .config_set = config_set,
        .config_list = config_list,
        .dev_open = std_serial_dev_open,
        .dev_close = std_serial_dev_close,
        .dev_acquisition_start = dev_acquisition_start,
-       .dev_acquisition_stop = dev_acquisition_stop,
-       .priv = NULL,
+       .dev_acquisition_stop = std_serial_dev_acquisition_stop,
+       .context = NULL,
 };
+SR_REGISTER_DEV_DRIVER(motech_lps_301_driver_info);