Drivers retrieve the state and configuration of clock by read transactions.
This commit adds proc node to dump the information for debugging.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/fireface/Makefile | 2 +- sound/firewire/fireface/ff-proc.c | 63 +++++++++++++++++++++++++++++++++++++++ sound/firewire/fireface/ff.c | 2 ++ sound/firewire/fireface/ff.h | 2 ++ 4 files changed, 68 insertions(+), 1 deletion(-) create mode 100644 sound/firewire/fireface/ff-proc.c
diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile index 8e465e4..e88ff9e 100644 --- a/sound/firewire/fireface/Makefile +++ b/sound/firewire/fireface/Makefile @@ -1,2 +1,2 @@ -snd-fireface-objs := ff.o ff-transaction.o ff-midi.o +snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o diff --git a/sound/firewire/fireface/ff-proc.c b/sound/firewire/fireface/ff-proc.c new file mode 100644 index 0000000..69441d1 --- /dev/null +++ b/sound/firewire/fireface/ff-proc.c @@ -0,0 +1,63 @@ +/* + * ff-proc.c - a part of driver for RME Fireface series + * + * Copyright (c) 2015-2017 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "./ff.h" + +static void proc_dump_clock_config(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_ff *ff = entry->private_data; + + ff->spec->protocol->dump_clock_config(ff, buffer); +} + +static void proc_dump_sync_status(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_ff *ff = entry->private_data; + + ff->spec->protocol->dump_sync_status(ff, buffer); +} + +static void add_node(struct snd_ff *ff, 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(ff->card, name, root); + if (entry == NULL) + return; + + snd_info_set_text_ops(entry, ff, op); + if (snd_info_register(entry) < 0) + snd_info_free_entry(entry); +} + +void snd_ff_proc_init(struct snd_ff *ff) +{ + 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(ff->card, "firewire", + ff->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(ff, root, "clock-config", proc_dump_clock_config); + add_node(ff, root, "sync-status", proc_dump_sync_status); +} diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c index 11d76b3..22e7bcb 100644 --- a/sound/firewire/fireface/ff.c +++ b/sound/firewire/fireface/ff.c @@ -61,6 +61,8 @@ static void do_registration(struct work_struct *work)
name_card(ff);
+ snd_ff_proc_init(ff); + err = snd_ff_create_midi_devices(ff); if (err < 0) goto error; diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h index 2944bde..2d1fab2 100644 --- a/sound/firewire/fireface/ff.h +++ b/sound/firewire/fireface/ff.h @@ -99,6 +99,8 @@ int snd_ff_transaction_register(struct snd_ff *ff); int snd_ff_transaction_reregister(struct snd_ff *ff); void snd_ff_transaction_unregister(struct snd_ff *ff);
+void snd_ff_proc_init(struct snd_ff *ff); + int snd_ff_create_midi_devices(struct snd_ff *ff);
#endif