kingst-la2016: keep FPGA active after device close

[libsigrok.git] / src / hardware / kingst-la2016 / protocol.h

diff --git a/src/hardware/kingst-la2016/protocol.h b/src/hardware/kingst-la2016/protocol.h
index c865a13b9acfa6b0c412e6c4c5f6f79f5d09f0fd..3b251ed1d16aef4d1863168b6f061328e9ad1d44 100644 (file)
--- a/src/hardware/kingst-la2016/protocol.h
+++ b/src/hardware/kingst-la2016/protocol.h
@@ -66,6 +66,15 @@
  */
 #define LA2016_EP2_PADDING     2048
 
+/*
+ * Whether the logic input threshold voltage is a config item of the
+ * "Logic" channel group or a global config item of the device. Ideally
+ * it would be the former (being strictly related to the Logic channels)
+ * but mainline applications work better with the latter, and many other
+ * device drivers implement it that way, too.
+ */
+#define WITH_THRESHOLD_DEVCFG  1
+
 #define LA2016_THR_VOLTAGE_MIN 0.40
 #define LA2016_THR_VOLTAGE_MAX 4.00
 
@@ -77,6 +86,14 @@
 
 #define LA2016_NUM_PWMCH_MAX   2
 
+/*
+ * Whether to de-initialize the device hardware in the driver's close
+ * callback. It is desirable to e.g. configure PWM channels and leave
+ * the generator running after the application shuts down. Users can
+ * always disable channels on their way out if they want to.
+ */
+#define WITH_DEINIT_IN_CLOSE   0
+
 #define LA2016_CONVBUFFER_SIZE (4 * 1024 * 1024)
 
 struct kingst_model {
@@ -104,8 +121,7 @@ struct dev_context {
                float duty;
        } pwm_setting[LA2016_NUM_PWMCH_MAX];
        size_t threshold_voltage_idx;
-       float threshold_voltage;
-       uint64_t cur_samplerate;
+       uint64_t samplerate;
        struct sr_sw_limits sw_limits;
        uint64_t capture_ratio;
 
@@ -136,7 +152,8 @@ SR_PRIV int la2016_identify_device(const struct sr_dev_inst *sdi,
 SR_PRIV int la2016_init_hardware(const struct sr_dev_inst *sdi);
 SR_PRIV int la2016_deinit_hardware(const struct sr_dev_inst *sdi);
 SR_PRIV int la2016_write_pwm_config(const struct sr_dev_inst *sdi, size_t idx);
-SR_PRIV int la2016_setup_acquisition(const struct sr_dev_inst *sdi);
+SR_PRIV int la2016_setup_acquisition(const struct sr_dev_inst *sdi,
+       double voltage);
 SR_PRIV int la2016_start_acquisition(const struct sr_dev_inst *sdi);
 SR_PRIV int la2016_abort_acquisition(const struct sr_dev_inst *sdi);
 SR_PRIV int la2016_receive_data(int fd, int revents, void *cb_data);