sysclk-lwla: Various cosmetic improvements

src/hardware/sysclk-lwla/api.c

@@ -23,7 +23,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <libsigrok/libsigrok.h>
-#include "libsigrok-internal.h"
+#include <libsigrok-internal.h>
 #include "protocol.h"
 
 /* Supported device scan options.

src/hardware/sysclk-lwla/lwla.c

@@ -20,9 +20,9 @@
 #include <config.h>
 #include <glib/gstdio.h>
 #include <libsigrok/libsigrok.h>
-#include "libsigrok-internal.h"
-#include "protocol.h"
+#include <libsigrok-internal.h>
 #include "lwla.h"
+#include "protocol.h"
 
 #define BITSTREAM_MAX_SIZE    (256 * 1024) /* bitstream size limit for safety */
 #define BITSTREAM_HEADER_SIZE 4            /* transfer header size in bytes */

src/hardware/sysclk-lwla/lwla.h

@@ -83,7 +83,7 @@ enum command_id {
 /** LWLA capture state flags.
  * The bit positions are the same as in the LWLA1016 control register.
  */
-enum {
+enum status_flag {
 	STATUS_CAPTURING = 1 << 2,
 	STATUS_TRIGGERED = 1 << 5,
 	STATUS_MEM_AVAIL = 1 << 6,

src/hardware/sysclk-lwla/lwla1016.c

@@ -319,7 +319,6 @@ static int prepare_request(const struct sr_dev_inst *sdi)
 		lwla_queue_regval(acq, REG_CAP_COUNT, 0);
 		break;
 	case STATE_READ_REQUEST:
-		/* Always read a multiple of 8 device words. */
 		count = MIN(READ_CHUNK_LEN32,
 			    acq->mem_addr_stop - acq->mem_addr_next);
 

src/hardware/sysclk-lwla/protocol.c

@@ -19,12 +19,8 @@
 
 #include <config.h>
 #include <string.h>
-#include "lwla.h"
 #include "protocol.h"
-
-/* Status polling interval during acquisition.
- */
-#define POLL_INTERVAL 100 /* ms */
+#include "lwla.h"
 
 /* Submit an already filled-in USB transfer.
  */
@@ -341,7 +337,8 @@ static void LIBUSB_CALL transfer_out_completed(struct libusb_transfer *transfer)
 	acq  = devc->acquisition;
 
 	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
-		sr_err("Transfer to device failed: %d.", transfer->status);
+		sr_err("Transfer to device failed (state %d): %s.",
+		       devc->state, libusb_error_name(transfer->status));
 		devc->transfer_error = TRUE;
 		return;
 	}
@@ -549,6 +546,8 @@ SR_PRIV int lwla_start_acquisition(const struct sr_dev_inst *sdi)
 	struct dev_context *devc;
 	int ret;
 
+	const int poll_interval_ms = 100;
+
 	drvc = sdi->driver->context;
 	devc = sdi->priv;
 
@@ -570,7 +569,7 @@ SR_PRIV int lwla_start_acquisition(const struct sr_dev_inst *sdi)
 		return ret;
 	}
 	/* Register event source for asynchronous USB I/O. */
-	ret = usb_source_add(sdi->session, drvc->sr_ctx, POLL_INTERVAL,
+	ret = usb_source_add(sdi->session, drvc->sr_ctx, poll_interval_ms,
 			     &transfer_event, (struct sr_dev_inst *)sdi);
 	if (ret != SR_OK) {
 		clear_acquisition_state(sdi);

src/hardware/sysclk-lwla/protocol.h

@@ -118,12 +118,10 @@ enum protocol_state {
  */
 struct dev_context {
 	uint64_t samplerate;	/* requested samplerate */
-
 	uint64_t limit_msec;	/* requested capture duration in ms */
 	uint64_t limit_samples;	/* requested capture length in samples */
 
-	uint64_t channel_mask;	/* bit mask of enabled channels */
-
+	uint64_t channel_mask;		/* bit mask of enabled channels */
 	uint64_t trigger_mask;		/* trigger enable mask */
 	uint64_t trigger_edge_mask;	/* trigger type mask */
 	uint64_t trigger_values;	/* trigger level/slope bits */