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+/*
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+ * bebob_maudio.c - a part of driver for BeBoB based devices
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+ *
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+ * Copyright (c) 2013-2014 Takashi Sakamoto
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+ *
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+ * Licensed under the terms of the GNU General Public License, version 2.
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+ */
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+
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+#include "./bebob.h"
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+
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+/*
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+ * Just powering on, Firewire 410/Audiophile wait to
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+ * download firmware blob. To enable these devices, drivers should upload
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+ * firmware blob and send a command to initialize configuration to factory
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+ * settings when completing uploading. Then these devices generate bus reset
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+ * and are recognized as new devices with the firmware.
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+ *
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+ * For streaming, both of output and input streams are needed for Firewire 410
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+ * and Ozonic. The single stream is OK for the other devices even if the clock
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+ * source is not SYT-Match (I note no devices use SYT-Match).
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+ *
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+ * Without streaming, the devices except for Firewire Audiophile can mix any
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+ * input and output. For this reason, Audiophile cannot be used as standalone
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+ * mixer.
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+ */
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+
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+#define MAUDIO_SPECIFIC_ADDRESS 0xffc700000000
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+
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+#define METER_OFFSET 0x00600000
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+
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+/* some device has sync info after metering data */
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+#define METER_SIZE_FW410 76 /* with sync info */
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+#define METER_SIZE_AUDIOPHILE 60 /* with sync info */
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+#define METER_SIZE_SOLO 52 /* with sync info */
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+#define METER_SIZE_OZONIC 48
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+#define METER_SIZE_NRV10 80
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+
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+/* labels for metering */
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+#define ANA_IN "Analog In"
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+#define ANA_OUT "Analog Out"
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+#define DIG_IN "Digital In"
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+#define SPDIF_IN "S/PDIF In"
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+#define ADAT_IN "ADAT In"
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+#define DIG_OUT "Digital Out"
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+#define SPDIF_OUT "S/PDIF Out"
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+#define ADAT_OUT "ADAT Out"
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+#define STRM_IN "Stream In"
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+#define AUX_OUT "Aux Out"
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+#define HP_OUT "HP Out"
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+/* for NRV */
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+#define UNKNOWN_METER "Unknown"
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+
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+static inline int
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+get_meter(struct snd_bebob *bebob, void *buf, unsigned int size)
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+{
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+ return snd_fw_transaction(bebob->unit, TCODE_READ_BLOCK_REQUEST,
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+ MAUDIO_SPECIFIC_ADDRESS + METER_OFFSET,
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+ buf, size, 0);
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+}
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+
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+/* last 4 bytes are omitted because it's clock info. */
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+static char *const fw410_meter_labels[] = {
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+ ANA_IN, DIG_IN,
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+ ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT, DIG_OUT,
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+ HP_OUT
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+};
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+static char *const audiophile_meter_labels[] = {
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+ ANA_IN, DIG_IN,
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+ ANA_OUT, ANA_OUT, DIG_OUT,
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+ HP_OUT, AUX_OUT,
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+};
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+static char *const solo_meter_labels[] = {
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+ ANA_IN, DIG_IN,
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+ STRM_IN, STRM_IN,
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+ ANA_OUT, DIG_OUT
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+};
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+
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+/* no clock info */
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+static char *const ozonic_meter_labels[] = {
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+ ANA_IN, ANA_IN,
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+ STRM_IN, STRM_IN,
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+ ANA_OUT, ANA_OUT
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+};
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+/* TODO: need testers. these positions are based on authour's assumption */
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+static char *const nrv10_meter_labels[] = {
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+ ANA_IN, ANA_IN, ANA_IN, ANA_IN,
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+ DIG_IN,
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+ ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT,
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+ DIG_IN
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+};
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+static int
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+normal_meter_get(struct snd_bebob *bebob, u32 *buf, unsigned int size)
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+{
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+ struct snd_bebob_meter_spec *spec = bebob->spec->meter;
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+ unsigned int c, channels;
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+ int err;
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+
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+ channels = spec->num * 2;
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+ if (size < channels * sizeof(u32))
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+ return -EINVAL;
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+
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+ err = get_meter(bebob, (void *)buf, size);
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+ if (err < 0)
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+ goto end;
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+
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+ for (c = 0; c < channels; c++)
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+ be32_to_cpus(&buf[c]);
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+
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+ /* swap stream channels because inverted */
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+ if (spec->labels == solo_meter_labels) {
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+ swap(buf[4], buf[6]);
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+ swap(buf[5], buf[7]);
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+ }
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+end:
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+ return err;
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+}
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+
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+/* Firewire 410 specification */
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+static struct snd_bebob_rate_spec usual_rate_spec = {
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+ .get = &snd_bebob_stream_get_rate,
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+ .set = &snd_bebob_stream_set_rate,
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+};
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+static struct snd_bebob_meter_spec fw410_meter_spec = {
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+ .num = ARRAY_SIZE(fw410_meter_labels),
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+ .labels = fw410_meter_labels,
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+ .get = &normal_meter_get
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+};
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+struct snd_bebob_spec maudio_fw410_spec = {
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+ .clock = NULL,
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+ .rate = &usual_rate_spec,
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+ .meter = &fw410_meter_spec
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+};
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+
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+/* Firewire Audiophile specification */
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+static struct snd_bebob_meter_spec audiophile_meter_spec = {
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+ .num = ARRAY_SIZE(audiophile_meter_labels),
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+ .labels = audiophile_meter_labels,
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+ .get = &normal_meter_get
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+};
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+struct snd_bebob_spec maudio_audiophile_spec = {
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+ .clock = NULL,
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+ .rate = &usual_rate_spec,
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+ .meter = &audiophile_meter_spec
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+};
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+
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+/* Firewire Solo specification */
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+static struct snd_bebob_meter_spec solo_meter_spec = {
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+ .num = ARRAY_SIZE(solo_meter_labels),
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+ .labels = solo_meter_labels,
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+ .get = &normal_meter_get
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+};
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+struct snd_bebob_spec maudio_solo_spec = {
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+ .clock = NULL,
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+ .rate = &usual_rate_spec,
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+ .meter = &solo_meter_spec
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+};
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+
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+/* Ozonic specification */
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+static struct snd_bebob_meter_spec ozonic_meter_spec = {
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+ .num = ARRAY_SIZE(ozonic_meter_labels),
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+ .labels = ozonic_meter_labels,
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+ .get = &normal_meter_get
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+};
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+struct snd_bebob_spec maudio_ozonic_spec = {
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+ .clock = NULL,
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+ .rate = &usual_rate_spec,
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+ .meter = &ozonic_meter_spec
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+};
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+
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+/* NRV10 specification */
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+static struct snd_bebob_meter_spec nrv10_meter_spec = {
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+ .num = ARRAY_SIZE(nrv10_meter_labels),
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+ .labels = nrv10_meter_labels,
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+ .get = &normal_meter_get
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+};
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+struct snd_bebob_spec maudio_nrv10_spec = {
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+ .clock = NULL,
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+ .rate = &usual_rate_spec,
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+ .meter = &nrv10_meter_spec
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+};
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Takashi Sakamoto