Sigma: Minor cleanups.

diff --git a/hardware/asix-sigma/asix-sigma.c b/hardware/asix-sigma/asix-sigma.c
index 1152f443c32b835bf4d09202ee5852fdacfaa870..819afa1d2bfb54a0fff00b2e214cd6905c8afc15 100644 (file)
--- a/hardware/asix-sigma/asix-sigma.c
+++ b/hardware/asix-sigma/asix-sigma.c
@@ -48,7 +48,6 @@ static int cur_firmware = -1;
 static int num_probes = 0;
 static int samples_per_event = 0;
 static int capture_ratio = 50;
-
 static struct sigma_trigger trigger;
 
 static uint64_t supported_samplerates[] = {
@@ -243,7 +242,7 @@ static int sigma_read_dram(uint16_t startchunk, size_t numchunks, uint8_t *data)
        return sigma_read(data, numchunks * CHUNK_SIZE);
 }
 
-/* Upload trigger look-up tables to Sigma */
+/* Upload trigger look-up tables to Sigma. */
 static int sigma_write_trigger_lut(struct triggerlut *lut)
 {
        int i;
@@ -745,6 +744,7 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts,
        int triggerts = -1;
        int triggeroff = 0;
 
+       /* Check if trigger is in this chunk. */
        if (triggerpos != -1) {
                if (cur_samplerate <= MHZ(50))
                        triggerpos -= EVENTS_PER_CLUSTER;
@@ -811,11 +811,12 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts,
                sent = 0;
                if (i == triggerts) {
                        /*
-                        * Trigger is presumptively only accurate to event, i.e.
-                        * for 100 and 200 MHz, where multiple samples are coded
-                        * in a single event, the trigger does not match the
-                        * exact sample.
+                        * Trigger is presumptively not accurate to sample.
+                        * However, it always trigger before the actual event,
+                        * so it would be possible to forward to correct position
+                        * here by manually checking for trigger condition.
                         */
+
                        tosend = (triggerpos % 7) - triggeroff;
 
                        if (tosend > 0) {
@@ -945,7 +946,7 @@ static void build_lut_entry(uint16_t value, uint16_t mask, uint16_t *entry)
                                /* Set bit in entry */
                                if ((mask & bit) &&
                                    ((!(value & bit)) !=
-                                    (!(j & (1 << k)))))
+                                   (!(j & (1 << k)))))
                                        entry[i] &= ~(1 << j);
                        }
        }
@@ -1039,7 +1040,7 @@ static void add_trigger_function(enum triggerop oper, enum triggerfunc func,
 static int build_basic_trigger(struct triggerlut *lut)
 {
        int i,j;
-       uint16_t masks[2] = {0, 0};
+       uint16_t masks[2] = { 0, 0 };
 
        memset(lut, 0, sizeof(struct triggerlut));