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Commit 4638ec6e authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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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: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 9b2bb4f2

sound/firewire/motu/Makefile

+2 −1
Original line number Original line Diff line number Diff line 
snd-firewire-motu-objs := motu.o amdtp-motu.o motu-transaction.o motu-stream.o

snd-firewire-motu-objs := motu.o amdtp-motu.o motu-transaction.o motu-stream.o \

			  motu-proc.o

obj-$(CONFIG_SND_FIREWIRE_MOTU) += snd-firewire-motu.o
 
obj-$(CONFIG_SND_FIREWIRE_MOTU) += snd-firewire-motu.o

sound/firewire/motu/motu-proc.c

0 → 100644
+118 −0
Original line number Original line Diff line number Diff line 
/*

 * 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);

}

sound/firewire/motu/motu.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -97,6 +97,8 @@ static void do_registration(struct work_struct *work) 
	if (err < 0)

	if (err < 0)

		goto error;

		goto error;





	snd_motu_proc_init(motu);



	err = snd_card_register(motu->card);

	err = snd_card_register(motu->card);

	if (err < 0)

	if (err < 0)

		goto error;

		goto error;

sound/firewire/motu/motu.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <sound/control.h>

#include <sound/control.h>

#include <sound/core.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/pcm.h>

#include <sound/info.h>





#include "../lib.h"

#include "../lib.h"

#include "../amdtp-stream.h"

#include "../amdtp-stream.h"
@@ -128,4 +129,6 @@ int snd_motu_stream_init_duplex(struct snd_motu *motu); 
void snd_motu_stream_destroy_duplex(struct snd_motu *motu);

void snd_motu_stream_destroy_duplex(struct snd_motu *motu);

int snd_motu_stream_start_duplex(struct snd_motu *motu, unsigned int rate);

int snd_motu_stream_start_duplex(struct snd_motu *motu, unsigned int rate);

void snd_motu_stream_stop_duplex(struct snd_motu *motu);

void snd_motu_stream_stop_duplex(struct snd_motu *motu);



void snd_motu_proc_init(struct snd_motu *motu);

#endif
 
#endif