ALSA: firewire-motu: add proc node to show current statuc of clock and packet formats
This commit adds a proc node for debugging purpose.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/motu/motu-proc.c b/sound/firewire/motu/motu-proc.c
new file mode 100644
index 0000000..4edc064
--- /dev/null
+++ b/sound/firewire/motu/motu-proc.c
@@ -0,0 +1,118 @@
+/*
+ * motu-proc.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "./motu.h"
+
+static const char *const clock_names[] = {
+ [SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PCIF on coaxial interface",
+ [SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
+ [SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
+};
+
+static void proc_read_clock(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+
+ struct snd_motu *motu = entry->private_data;
+ const struct snd_motu_protocol *const protocol = motu->spec->protocol;
+ unsigned int rate;
+ enum snd_motu_clock_source source;
+
+ if (protocol->get_clock_rate(motu, &rate) < 0)
+ return;
+ if (protocol->get_clock_source(motu, &source) < 0)
+ return;
+
+ snd_iprintf(buffer, "Rate:\t%d\n", rate);
+ snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
+}
+
+static void proc_read_format(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_motu *motu = entry->private_data;
+ const struct snd_motu_protocol *const protocol = motu->spec->protocol;
+ unsigned int mode;
+ struct snd_motu_packet_format *formats;
+ int i;
+
+ if (protocol->cache_packet_formats(motu) < 0)
+ return;
+
+ snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
+ for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
+ mode = i >> 1;
+
+ formats = &motu->tx_packet_formats;
+ snd_iprintf(buffer,
+ "%u:\t%u\t%u\t%u\n",
+ snd_motu_clock_rates[i],
+ formats->msg_chunks,
+ formats->fixed_part_pcm_chunks[mode],
+ formats->differed_part_pcm_chunks[mode]);
+ }
+
+ snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
+ for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
+ mode = i >> 1;
+
+ formats = &motu->rx_packet_formats;
+ snd_iprintf(buffer,
+ "%u:\t%u\t%u\t%u\n",
+ snd_motu_clock_rates[i],
+ formats->msg_chunks,
+ formats->fixed_part_pcm_chunks[mode],
+ formats->differed_part_pcm_chunks[mode]);
+ }
+}
+
+static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
+ const char *name,
+ void (*op)(struct snd_info_entry *e,
+ struct snd_info_buffer *b))
+{
+ struct snd_info_entry *entry;
+
+ entry = snd_info_create_card_entry(motu->card, name, root);
+ if (entry == NULL)
+ return;
+
+ snd_info_set_text_ops(entry, motu, op);
+ if (snd_info_register(entry) < 0)
+ snd_info_free_entry(entry);
+}
+
+void snd_motu_proc_init(struct snd_motu *motu)
+{
+ struct snd_info_entry *root;
+
+ /*
+ * All nodes are automatically removed at snd_card_disconnect(),
+ * by following to link list.
+ */
+ root = snd_info_create_card_entry(motu->card, "firewire",
+ motu->card->proc_root);
+ if (root == NULL)
+ return;
+ root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ if (snd_info_register(root) < 0) {
+ snd_info_free_entry(root);
+ return;
+ }
+
+ add_node(motu, root, "clock", proc_read_clock);
+ add_node(motu, root, "format", proc_read_format);
+}