[linux-block.git] / sound / usb / proc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 */

#include <linux/init.h>
#include <linux/usb.h>

#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>

#include "usbaudio.h"
#include "helper.h"
#include "card.h"
#include "endpoint.h"
#include "proc.h"

/* convert our full speed USB rate into sampling rate in Hz */
static inline unsigned get_full_speed_hz(unsigned int usb_rate)
{
	return (usb_rate * 125 + (1 << 12)) >> 13;
}

/* convert our high speed USB rate into sampling rate in Hz */
static inline unsigned get_high_speed_hz(unsigned int usb_rate)
{
	return (usb_rate * 125 + (1 << 9)) >> 10;
}

/*
 * common proc files to show the usb device info
 */
static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	struct snd_usb_audio *chip = entry->private_data;
	if (!atomic_read(&chip->shutdown))
		snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
}

static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	struct snd_usb_audio *chip = entry->private_data;
	if (!atomic_read(&chip->shutdown))
		snd_iprintf(buffer, "%04x:%04x\n", 
			    USB_ID_VENDOR(chip->usb_id),
			    USB_ID_PRODUCT(chip->usb_id));
}

void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
{
	snd_card_ro_proc_new(chip->card, "usbbus", chip,
			     proc_audio_usbbus_read);
	snd_card_ro_proc_new(chip->card, "usbid", chip,
			     proc_audio_usbid_read);
}

/*
 * proc interface for list the supported pcm formats
 */
static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
{
	struct audioformat *fp;
	static const char * const sync_types[4] = {
		"NONE", "ASYNC", "ADAPTIVE", "SYNC"
	};

	list_for_each_entry(fp, &subs->fmt_list, list) {
		snd_pcm_format_t fmt;

		snd_iprintf(buffer, "  Interface %d\n", fp->iface);
		snd_iprintf(buffer, "    Altset %d\n", fp->altsetting);
		snd_iprintf(buffer, "    Format:");
		for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
			if (fp->formats & pcm_format_to_bits(fmt))
				snd_iprintf(buffer, " %s",
					    snd_pcm_format_name(fmt));
		snd_iprintf(buffer, "\n");
		snd_iprintf(buffer, "    Channels: %d\n", fp->channels);
		snd_iprintf(buffer, "    Endpoint: %d %s (%s)\n",
			    fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
			    fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
			    sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
		if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
			snd_iprintf(buffer, "    Rates: %d - %d (continuous)\n",
				    fp->rate_min, fp->rate_max);
		} else {
			unsigned int i;
			snd_iprintf(buffer, "    Rates: ");
			for (i = 0; i < fp->nr_rates; i++) {
				if (i > 0)
					snd_iprintf(buffer, ", ");
				snd_iprintf(buffer, "%d", fp->rate_table[i]);
			}
			snd_iprintf(buffer, "\n");
		}
		if (subs->speed != USB_SPEED_FULL)
			snd_iprintf(buffer, "    Data packet interval: %d us\n",
				    125 * (1 << fp->datainterval));
		snd_iprintf(buffer, "    Bits: %d\n", fp->fmt_bits);
		// snd_iprintf(buffer, "    Max Packet Size = %d\n", fp->maxpacksize);
		// snd_iprintf(buffer, "    EP Attribute = %#x\n", fp->attributes);
	}
}

static void proc_dump_ep_status(struct snd_usb_substream *subs,
				struct snd_usb_endpoint *data_ep,
				struct snd_usb_endpoint *sync_ep,
				struct snd_info_buffer *buffer)
{
	if (!data_ep)
		return;
	snd_iprintf(buffer, "    Packet Size = %d\n", data_ep->curpacksize);
	snd_iprintf(buffer, "    Momentary freq = %u Hz (%#x.%04x)\n",
		    subs->speed == USB_SPEED_FULL
		    ? get_full_speed_hz(data_ep->freqm)
		    : get_high_speed_hz(data_ep->freqm),
		    data_ep->freqm >> 16, data_ep->freqm & 0xffff);
	if (sync_ep && data_ep->freqshift != INT_MIN) {
		int res = 16 - data_ep->freqshift;
		snd_iprintf(buffer, "    Feedback Format = %d.%d\n",
			    (sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res);
	}
}

static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
{
	if (subs->running) {
		snd_iprintf(buffer, "  Status: Running\n");
		snd_iprintf(buffer, "    Interface = %d\n", subs->interface);
		snd_iprintf(buffer, "    Altset = %d\n", subs->altset_idx);
		proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer);
	} else {
		snd_iprintf(buffer, "  Status: Stop\n");
	}
}

static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	struct snd_usb_stream *stream = entry->private_data;

	snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);

	if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
		snd_iprintf(buffer, "\nPlayback:\n");
		proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
		proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
	}
	if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
		snd_iprintf(buffer, "\nCapture:\n");
		proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
		proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
	}
}

void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
{
	char name[32];
	struct snd_card *card = stream->chip->card;

	sprintf(name, "stream%d", stream->pcm_index);
	snd_card_ro_proc_new(card, name, stream, proc_pcm_format_read);
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
e5779998	2	/*
e5779998 DM	3	*/
	4
	5	#include <linux/init.h>
	6	#include <linux/usb.h>
	7
	8	#include <sound/core.h>
	9	#include <sound/info.h>
	10	#include <sound/pcm.h>
	11
	12	#include "usbaudio.h"
	13	#include "helper.h"
	14	#include "card.h"
c89a5d9c	15	#include "endpoint.h"
e5779998 DM	16	#include "proc.h"
	17
	18	/* convert our full speed USB rate into sampling rate in Hz */
	19	static inline unsigned get_full_speed_hz(unsigned int usb_rate)
	20	{
	21	return (usb_rate * 125 + (1 << 12)) >> 13;
	22	}
	23
	24	/* convert our high speed USB rate into sampling rate in Hz */
	25	static inline unsigned get_high_speed_hz(unsigned int usb_rate)
	26	{
	27	return (usb_rate * 125 + (1 << 9)) >> 10;
	28	}
	29
	30	/*
	31	* common proc files to show the usb device info
	32	*/
	33	static void proc_audio_usbbus_read(struct snd_info_entry entry, struct snd_info_buffer buffer)
	34	{
	35	struct snd_usb_audio *chip = entry->private_data;
47ab1545	36	if (!atomic_read(&chip->shutdown))
e5779998 DM	37	snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
	38	}
	39
	40	static void proc_audio_usbid_read(struct snd_info_entry entry, struct snd_info_buffer buffer)
	41	{
	42	struct snd_usb_audio *chip = entry->private_data;
47ab1545	43	if (!atomic_read(&chip->shutdown))
e5779998 DM	44	snd_iprintf(buffer, "%04x:%04x\n",
	45	USB_ID_VENDOR(chip->usb_id),
	46	USB_ID_PRODUCT(chip->usb_id));
	47	}
	48
	49	void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
	50	{
7449054a TI	51	snd_card_ro_proc_new(chip->card, "usbbus", chip,
	52	proc_audio_usbbus_read);
	53	snd_card_ro_proc_new(chip->card, "usbid", chip,
	54	proc_audio_usbid_read);
e5779998 DM	55	}
	56
	57	/*
	58	* proc interface for list the supported pcm formats
	59	*/
	60	static void proc_dump_substream_formats(struct snd_usb_substream subs, struct snd_info_buffer buffer)
	61	{
88766f04	62	struct audioformat *fp;
a01df925	63	static const char * const sync_types[4] = {
e5779998 DM	64	"NONE", "ASYNC", "ADAPTIVE", "SYNC"
	65	};
	66
88766f04	67	list_for_each_entry(fp, &subs->fmt_list, list) {
015eb0b0	68	snd_pcm_format_t fmt;
88766f04	69
e5779998 DM	70	snd_iprintf(buffer, " Interface %d\n", fp->iface);
e5779998 DM	71	snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
015eb0b0 CL	72	snd_iprintf(buffer, " Format:");
015eb0b0 CL	73	for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
74c34ca1	74	if (fp->formats & pcm_format_to_bits(fmt))
015eb0b0 CL	75	snd_iprintf(buffer, " %s",
	76	snd_pcm_format_name(fmt));
	77	snd_iprintf(buffer, "\n");
e5779998 DM	78	snd_iprintf(buffer, " Channels: %d\n", fp->channels);
	79	snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
	80	fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
	81	fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
	82	sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
	83	if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
	84	snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
	85	fp->rate_min, fp->rate_max);
	86	} else {
	87	unsigned int i;
	88	snd_iprintf(buffer, " Rates: ");
	89	for (i = 0; i < fp->nr_rates; i++) {
	90	if (i > 0)
	91	snd_iprintf(buffer, ", ");
	92	snd_iprintf(buffer, "%d", fp->rate_table[i]);
	93	}
	94	snd_iprintf(buffer, "\n");
	95	}
978520b7	96	if (subs->speed != USB_SPEED_FULL)
e5779998 DM	97	snd_iprintf(buffer, " Data packet interval: %d us\n",
e5779998 DM	98	125 * (1 << fp->datainterval));
c7a13264	99	snd_iprintf(buffer, " Bits: %d\n", fp->fmt_bits);
e5779998 DM	100	// snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
	101	// snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
	102	}
	103	}
	104
22026c1a	105	static void proc_dump_ep_status(struct snd_usb_substream *subs,
e6135fe9 TH	106	struct snd_usb_endpoint *data_ep,
e6135fe9 TH	107	struct snd_usb_endpoint *sync_ep,
22026c1a TI	108	struct snd_info_buffer *buffer)
22026c1a TI	109	{
e6135fe9	110	if (!data_ep)
22026c1a	111	return;
e6135fe9	112	snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize);
22026c1a	113	snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
978520b7	114	subs->speed == USB_SPEED_FULL
e6135fe9 TH	115	? get_full_speed_hz(data_ep->freqm)
	116	: get_high_speed_hz(data_ep->freqm),
	117	data_ep->freqm >> 16, data_ep->freqm & 0xffff);
	118	if (sync_ep && data_ep->freqshift != INT_MIN) {
	119	int res = 16 - data_ep->freqshift;
22026c1a	120	snd_iprintf(buffer, " Feedback Format = %d.%d\n",
e6135fe9	121	(sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res);
22026c1a TI	122	}
	123	}
	124
e5779998 DM	125	static void proc_dump_substream_status(struct snd_usb_substream subs, struct snd_info_buffer buffer)
	126	{
	127	if (subs->running) {
e5779998 DM	128	snd_iprintf(buffer, " Status: Running\n");
e5779998 DM	129	snd_iprintf(buffer, " Interface = %d\n", subs->interface);
e11b4e0e	130	snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx);
e6135fe9	131	proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer);
e5779998 DM	132	} else {
	133	snd_iprintf(buffer, " Status: Stop\n");
	134	}
	135	}
	136
	137	static void proc_pcm_format_read(struct snd_info_entry entry, struct snd_info_buffer buffer)
	138	{
	139	struct snd_usb_stream *stream = entry->private_data;
	140
	141	snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
	142
	143	if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
	144	snd_iprintf(buffer, "\nPlayback:\n");
	145	proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
	146	proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
	147	}
	148	if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
	149	snd_iprintf(buffer, "\nCapture:\n");
	150	proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
	151	proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
	152	}
	153	}
	154
	155	void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
	156	{
e5779998 DM	157	char name[32];
	158	struct snd_card *card = stream->chip->card;
	159
	160	sprintf(name, "stream%d", stream->pcm_index);
7449054a	161	snd_card_ro_proc_new(card, name, stream, proc_pcm_format_read);
e5779998 DM	162	}
e5779998 DM	163