sound/firewire/fireworks/fireworks_proc.c - linux - Git at Google

 /*
  * fireworks_proc.c - a part of driver for Fireworks based devices
  *
  * Copyright (c) 2009-2010 Clemens Ladisch
  * Copyright (c) 2013-2014 Takashi Sakamoto
  *
  * Licensed under the terms of the GNU General Public License, version 2.
  */

 #include "./fireworks.h"

 static inline const char*
 get_phys_name(struct snd_efw_phys_grp *grp, bool input)
 {
 	static const char *const ch_type[] = {
 		"Analog", "S/PDIF", "ADAT", "S/PDIF or ADAT", "Mirroring",
 		"Headphones", "I2S", "Guitar", "Pirzo Guitar", "Guitar String",
 	};

 	if (grp->type < ARRAY_SIZE(ch_type))
 		return ch_type[grp->type];
 	else if (input)
 		return "Input";
 	else
 		return "Output";
 }

 static void
 proc_read_hwinfo(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
 	struct snd_efw *efw = entry->private_data;
 	unsigned short i;
 	struct snd_efw_hwinfo *hwinfo;

 	hwinfo = kmalloc(sizeof(struct snd_efw_hwinfo), GFP_KERNEL);
 	if (hwinfo == NULL)
 		return;

 	if (snd_efw_command_get_hwinfo(efw, hwinfo) < 0)
 		goto end;

 	snd_iprintf(buffer, "guid_hi: 0x%X\n", hwinfo->guid_hi);
 	snd_iprintf(buffer, "guid_lo: 0x%X\n", hwinfo->guid_lo);
 	snd_iprintf(buffer, "type: 0x%X\n", hwinfo->type);
 	snd_iprintf(buffer, "version: 0x%X\n", hwinfo->version);
 	snd_iprintf(buffer, "vendor_name: %s\n", hwinfo->vendor_name);
 	snd_iprintf(buffer, "model_name: %s\n", hwinfo->model_name);

 	snd_iprintf(buffer, "dsp_version: 0x%X\n", hwinfo->dsp_version);
 	snd_iprintf(buffer, "arm_version: 0x%X\n", hwinfo->arm_version);
 	snd_iprintf(buffer, "fpga_version: 0x%X\n", hwinfo->fpga_version);

 	snd_iprintf(buffer, "flags: 0x%X\n", hwinfo->flags);

 	snd_iprintf(buffer, "max_sample_rate: 0x%X\n", hwinfo->max_sample_rate);
 	snd_iprintf(buffer, "min_sample_rate: 0x%X\n", hwinfo->min_sample_rate);
 	snd_iprintf(buffer, "supported_clock: 0x%X\n",
 		    hwinfo->supported_clocks);

 	snd_iprintf(buffer, "phys out: 0x%X\n", hwinfo->phys_out);
 	snd_iprintf(buffer, "phys in: 0x%X\n", hwinfo->phys_in);

 	snd_iprintf(buffer, "phys in grps: 0x%X\n",
 		    hwinfo->phys_in_grp_count);
 	for (i = 0; i < hwinfo->phys_in_grp_count; i++) {
 		snd_iprintf(buffer,
 			    "phys in grp[%d]: type 0x%X, count 0x%X\n",
 			    i, hwinfo->phys_out_grps[i].type,
 			    hwinfo->phys_out_grps[i].count);
 	}

 	snd_iprintf(buffer, "phys out grps: 0x%X\n",
 		    hwinfo->phys_out_grp_count);
 	for (i = 0; i < hwinfo->phys_out_grp_count; i++) {
 		snd_iprintf(buffer,
 			    "phys out grps[%d]: type 0x%X, count 0x%X\n",
 			    i, hwinfo->phys_out_grps[i].type,
 			    hwinfo->phys_out_grps[i].count);
 	}

 	snd_iprintf(buffer, "amdtp rx pcm channels 1x: 0x%X\n",
 		    hwinfo->amdtp_rx_pcm_channels);
 	snd_iprintf(buffer, "amdtp tx pcm channels 1x: 0x%X\n",
 		    hwinfo->amdtp_tx_pcm_channels);
 	snd_iprintf(buffer, "amdtp rx pcm channels 2x: 0x%X\n",
 		    hwinfo->amdtp_rx_pcm_channels_2x);
 	snd_iprintf(buffer, "amdtp tx pcm channels 2x: 0x%X\n",
 		    hwinfo->amdtp_tx_pcm_channels_2x);
 	snd_iprintf(buffer, "amdtp rx pcm channels 4x: 0x%X\n",
 		    hwinfo->amdtp_rx_pcm_channels_4x);
 	snd_iprintf(buffer, "amdtp tx pcm channels 4x: 0x%X\n",
 		    hwinfo->amdtp_tx_pcm_channels_4x);

 	snd_iprintf(buffer, "midi out ports: 0x%X\n", hwinfo->midi_out_ports);
 	snd_iprintf(buffer, "midi in ports: 0x%X\n", hwinfo->midi_in_ports);

 	snd_iprintf(buffer, "mixer playback channels: 0x%X\n",
 		    hwinfo->mixer_playback_channels);
 	snd_iprintf(buffer, "mixer capture channels: 0x%X\n",
 		    hwinfo->mixer_capture_channels);
 end:
 	kfree(hwinfo);
 }

 static void
 proc_read_clock(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
 	struct snd_efw *efw = entry->private_data;
 	enum snd_efw_clock_source clock_source;
 	unsigned int sampling_rate;

 	if (snd_efw_command_get_clock_source(efw, &clock_source) < 0)
 		return;

 	if (snd_efw_command_get_sampling_rate(efw, &sampling_rate) < 0)
 		return;

 	snd_iprintf(buffer, "Clock Source: %d\n", clock_source);
 	snd_iprintf(buffer, "Sampling Rate: %d\n", sampling_rate);
 }

 /*
  * NOTE:
  *  dB = 20 * log10(linear / 0x01000000)
  *  -144.0 dB when linear is 0
  */
 static void
 proc_read_phys_meters(struct snd_info_entry *entry,
 		      struct snd_info_buffer *buffer)
 {
 	struct snd_efw *efw = entry->private_data;
 	struct snd_efw_phys_meters *meters;
 	unsigned int g, c, m, max, size;
 	const char *name;
 	u32 *linear;
 	int err;

 	size = sizeof(struct snd_efw_phys_meters) +
 	       (efw->phys_in + efw->phys_out) * sizeof(u32);
 	meters = kzalloc(size, GFP_KERNEL);
 	if (meters == NULL)
 		return;

 	err = snd_efw_command_get_phys_meters(efw, meters, size);
 	if (err < 0)
 		goto end;

 	snd_iprintf(buffer, "Physical Meters:\n");

 	m = 0;
 	max = min(efw->phys_out, meters->out_meters);
 	linear = meters->values;
 	snd_iprintf(buffer, " %d Outputs:\n", max);
 	for (g = 0; g < efw->phys_out_grp_count; g++) {
 		name = get_phys_name(&efw->phys_out_grps[g], false);
 		for (c = 0; c < efw->phys_out_grps[g].count; c++) {
 			if (m < max)
 				snd_iprintf(buffer, "\t%s [%d]: %d\n",
 					    name, c, linear[m++]);
 		}
 	}

 	m = 0;
 	max = min(efw->phys_in, meters->in_meters);
 	linear = meters->values + meters->out_meters;
 	snd_iprintf(buffer, " %d Inputs:\n", max);
 	for (g = 0; g < efw->phys_in_grp_count; g++) {
 		name = get_phys_name(&efw->phys_in_grps[g], true);
 		for (c = 0; c < efw->phys_in_grps[g].count; c++)
 			if (m < max)
 				snd_iprintf(buffer, "\t%s [%d]: %d\n",
 					    name, c, linear[m++]);
 	}
 end:
 	kfree(meters);
 }

 static void
 proc_read_queues_state(struct snd_info_entry *entry,
 		       struct snd_info_buffer *buffer)
 {
 	struct snd_efw *efw = entry->private_data;
 	unsigned int consumed;

 	if (efw->pull_ptr > efw->push_ptr)
 		consumed = snd_efw_resp_buf_size -
 			   (unsigned int)(efw->pull_ptr - efw->push_ptr);
 	else
 		consumed = (unsigned int)(efw->push_ptr - efw->pull_ptr);

 	snd_iprintf(buffer, "%d/%d\n",
 		    consumed, snd_efw_resp_buf_size);
 }

 static void
 add_node(struct snd_efw *efw, 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(efw->card, name, root);
 	if (entry == NULL)
 		return;

 	snd_info_set_text_ops(entry, efw, op);
 	if (snd_info_register(entry) < 0)
 		snd_info_free_entry(entry);
 }

 void snd_efw_proc_init(struct snd_efw *efw)
 {
 	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(efw->card, "firewire",
 					  efw->card->proc_root);
 	if (root == NULL)
 		return;
 	root->mode = S_IFDIR | 0555;
 	if (snd_info_register(root) < 0) {
 		snd_info_free_entry(root);
 		return;
 	}

 	add_node(efw, root, "clock", proc_read_clock);
 	add_node(efw, root, "firmware", proc_read_hwinfo);
 	add_node(efw, root, "meters", proc_read_phys_meters);
 	add_node(efw, root, "queues", proc_read_queues_state);
 }
	/*
	* fireworks_proc.c - a part of driver for Fireworks based devices
	*
	* Copyright (c) 2009-2010 Clemens Ladisch
	* Copyright (c) 2013-2014 Takashi Sakamoto
	*
	* Licensed under the terms of the GNU General Public License, version 2.
	*/

	#include "./fireworks.h"

	static inline const char*
	get_phys_name(struct snd_efw_phys_grp *grp, bool input)
	{
	static const char *const ch_type[] = {
	"Analog", "S/PDIF", "ADAT", "S/PDIF or ADAT", "Mirroring",
	"Headphones", "I2S", "Guitar", "Pirzo Guitar", "Guitar String",
	};

	if (grp->type < ARRAY_SIZE(ch_type))
	return ch_type[grp->type];
	else if (input)
	return "Input";
	else
	return "Output";
	}

	static void
	proc_read_hwinfo(struct snd_info_entry entry, struct snd_info_buffer buffer)
	{
	struct snd_efw *efw = entry->private_data;
	unsigned short i;
	struct snd_efw_hwinfo *hwinfo;

	hwinfo = kmalloc(sizeof(struct snd_efw_hwinfo), GFP_KERNEL);
	if (hwinfo == NULL)
	return;

	if (snd_efw_command_get_hwinfo(efw, hwinfo) < 0)
	goto end;

	snd_iprintf(buffer, "guid_hi: 0x%X\n", hwinfo->guid_hi);
	snd_iprintf(buffer, "guid_lo: 0x%X\n", hwinfo->guid_lo);
	snd_iprintf(buffer, "type: 0x%X\n", hwinfo->type);
	snd_iprintf(buffer, "version: 0x%X\n", hwinfo->version);
	snd_iprintf(buffer, "vendor_name: %s\n", hwinfo->vendor_name);
	snd_iprintf(buffer, "model_name: %s\n", hwinfo->model_name);

	snd_iprintf(buffer, "dsp_version: 0x%X\n", hwinfo->dsp_version);
	snd_iprintf(buffer, "arm_version: 0x%X\n", hwinfo->arm_version);
	snd_iprintf(buffer, "fpga_version: 0x%X\n", hwinfo->fpga_version);

	snd_iprintf(buffer, "flags: 0x%X\n", hwinfo->flags);

	snd_iprintf(buffer, "max_sample_rate: 0x%X\n", hwinfo->max_sample_rate);
	snd_iprintf(buffer, "min_sample_rate: 0x%X\n", hwinfo->min_sample_rate);
	snd_iprintf(buffer, "supported_clock: 0x%X\n",
	hwinfo->supported_clocks);

	snd_iprintf(buffer, "phys out: 0x%X\n", hwinfo->phys_out);
	snd_iprintf(buffer, "phys in: 0x%X\n", hwinfo->phys_in);

	snd_iprintf(buffer, "phys in grps: 0x%X\n",
	hwinfo->phys_in_grp_count);
	for (i = 0; i < hwinfo->phys_in_grp_count; i++) {
	snd_iprintf(buffer,
	"phys in grp[%d]: type 0x%X, count 0x%X\n",
	i, hwinfo->phys_out_grps[i].type,
	hwinfo->phys_out_grps[i].count);
	}

	snd_iprintf(buffer, "phys out grps: 0x%X\n",
	hwinfo->phys_out_grp_count);
	for (i = 0; i < hwinfo->phys_out_grp_count; i++) {
	snd_iprintf(buffer,
	"phys out grps[%d]: type 0x%X, count 0x%X\n",
	i, hwinfo->phys_out_grps[i].type,
	hwinfo->phys_out_grps[i].count);
	}

	snd_iprintf(buffer, "amdtp rx pcm channels 1x: 0x%X\n",
	hwinfo->amdtp_rx_pcm_channels);
	snd_iprintf(buffer, "amdtp tx pcm channels 1x: 0x%X\n",
	hwinfo->amdtp_tx_pcm_channels);
	snd_iprintf(buffer, "amdtp rx pcm channels 2x: 0x%X\n",
	hwinfo->amdtp_rx_pcm_channels_2x);
	snd_iprintf(buffer, "amdtp tx pcm channels 2x: 0x%X\n",
	hwinfo->amdtp_tx_pcm_channels_2x);
	snd_iprintf(buffer, "amdtp rx pcm channels 4x: 0x%X\n",
	hwinfo->amdtp_rx_pcm_channels_4x);
	snd_iprintf(buffer, "amdtp tx pcm channels 4x: 0x%X\n",
	hwinfo->amdtp_tx_pcm_channels_4x);

	snd_iprintf(buffer, "midi out ports: 0x%X\n", hwinfo->midi_out_ports);
	snd_iprintf(buffer, "midi in ports: 0x%X\n", hwinfo->midi_in_ports);

	snd_iprintf(buffer, "mixer playback channels: 0x%X\n",
	hwinfo->mixer_playback_channels);
	snd_iprintf(buffer, "mixer capture channels: 0x%X\n",
	hwinfo->mixer_capture_channels);
	end:
	kfree(hwinfo);
	}

	static void
	proc_read_clock(struct snd_info_entry entry, struct snd_info_buffer buffer)
	{
	struct snd_efw *efw = entry->private_data;
	enum snd_efw_clock_source clock_source;
	unsigned int sampling_rate;

	if (snd_efw_command_get_clock_source(efw, &clock_source) < 0)
	return;

	if (snd_efw_command_get_sampling_rate(efw, &sampling_rate) < 0)
	return;

	snd_iprintf(buffer, "Clock Source: %d\n", clock_source);
	snd_iprintf(buffer, "Sampling Rate: %d\n", sampling_rate);
	}

	/*
	* NOTE:
	* dB = 20 * log10(linear / 0x01000000)
	* -144.0 dB when linear is 0
	*/
	static void
	proc_read_phys_meters(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_efw *efw = entry->private_data;
	struct snd_efw_phys_meters *meters;
	unsigned int g, c, m, max, size;
	const char *name;
	u32 *linear;
	int err;

	size = sizeof(struct snd_efw_phys_meters) +
	(efw->phys_in + efw->phys_out) * sizeof(u32);
	meters = kzalloc(size, GFP_KERNEL);
	if (meters == NULL)
	return;

	err = snd_efw_command_get_phys_meters(efw, meters, size);
	if (err < 0)
	goto end;

	snd_iprintf(buffer, "Physical Meters:\n");

	m = 0;
	max = min(efw->phys_out, meters->out_meters);
	linear = meters->values;
	snd_iprintf(buffer, " %d Outputs:\n", max);
	for (g = 0; g < efw->phys_out_grp_count; g++) {
	name = get_phys_name(&efw->phys_out_grps[g], false);
	for (c = 0; c < efw->phys_out_grps[g].count; c++) {
	if (m < max)
	snd_iprintf(buffer, "\t%s [%d]: %d\n",
	name, c, linear[m++]);
	}
	}

	m = 0;
	max = min(efw->phys_in, meters->in_meters);
	linear = meters->values + meters->out_meters;
	snd_iprintf(buffer, " %d Inputs:\n", max);
	for (g = 0; g < efw->phys_in_grp_count; g++) {
	name = get_phys_name(&efw->phys_in_grps[g], true);
	for (c = 0; c < efw->phys_in_grps[g].count; c++)
	if (m < max)
	snd_iprintf(buffer, "\t%s [%d]: %d\n",
	name, c, linear[m++]);
	}
	end:
	kfree(meters);
	}

	static void
	proc_read_queues_state(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_efw *efw = entry->private_data;
	unsigned int consumed;

	if (efw->pull_ptr > efw->push_ptr)
	consumed = snd_efw_resp_buf_size -
	(unsigned int)(efw->pull_ptr - efw->push_ptr);
	else
	consumed = (unsigned int)(efw->push_ptr - efw->pull_ptr);

	snd_iprintf(buffer, "%d/%d\n",
	consumed, snd_efw_resp_buf_size);
	}

	static void
	add_node(struct snd_efw efw, 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(efw->card, name, root);
	if (entry == NULL)
	return;

	snd_info_set_text_ops(entry, efw, op);
	if (snd_info_register(entry) < 0)
	snd_info_free_entry(entry);
	}

	void snd_efw_proc_init(struct snd_efw *efw)
	{
	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(efw->card, "firewire",
	efw->card->proc_root);
	if (root == NULL)
	return;
	root->mode = S_IFDIR \| 0555;
	if (snd_info_register(root) < 0) {
	snd_info_free_entry(root);
	return;
	}

	add_node(efw, root, "clock", proc_read_clock);
	add_node(efw, root, "firmware", proc_read_hwinfo);
	add_node(efw, root, "meters", proc_read_phys_meters);
	add_node(efw, root, "queues", proc_read_queues_state);
	}