oxfw-proc.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
  4 *
  5 * Copyright (c) 2014 Takashi Sakamoto
  6 */
  7
  8#include "./oxfw.h"
  9
 10static void proc_read_formation(struct snd_info_entry *entry,
 11				struct snd_info_buffer *buffer)
 12{
 13	struct snd_oxfw *oxfw = entry->private_data;
 14	struct snd_oxfw_stream_formation formation, curr;
 15	u8 *format;
 16	char flag;
 17	int i, err;
 18
 19	/* Show input. */
 20	err = snd_oxfw_stream_get_current_formation(oxfw,
 21						    AVC_GENERAL_PLUG_DIR_IN,
 22						    &curr);
 23	if (err < 0)
 24		return;
 25
 26	snd_iprintf(buffer, "Input Stream to device:\n");
 27	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
 28	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
 29		format = oxfw->rx_stream_formats[i];
 30		if (format == NULL)
 31			continue;
 32
 33		err = snd_oxfw_stream_parse_format(format, &formation);
 34		if (err < 0)
 35			continue;
 36
 37		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
 38			flag = '*';
 39		else
 40			flag = ' ';
 41
 42		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
 43			    formation.rate, formation.pcm, formation.midi);
 44	}
 45
 46	if (!oxfw->has_output)
 47		return;
 48
 49	/* Show output. */
 50	err = snd_oxfw_stream_get_current_formation(oxfw,
 51						    AVC_GENERAL_PLUG_DIR_OUT,
 52						    &curr);
 53	if (err < 0)
 54		return;
 55
 56	snd_iprintf(buffer, "Output Stream from device:\n");
 57	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
 58	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
 59		format = oxfw->tx_stream_formats[i];
 60		if (format == NULL)
 61			continue;
 62
 63		err = snd_oxfw_stream_parse_format(format, &formation);
 64		if (err < 0)
 65			continue;
 66
 67		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
 68			flag = '*';
 69		else
 70			flag = ' ';
 71
 72		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
 73			    formation.rate, formation.pcm, formation.midi);
 74	}
 75}
 76
 77static void add_node(struct snd_oxfw *oxfw, struct snd_info_entry *root,
 78		     const char *name,
 79		     void (*op)(struct snd_info_entry *e,
 80				struct snd_info_buffer *b))
 81{
 82	struct snd_info_entry *entry;
 83
 84	entry = snd_info_create_card_entry(oxfw->card, name, root);
 85	if (entry)
 86		snd_info_set_text_ops(entry, oxfw, op);
 87}
 88
 89void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
 90{
 91	struct snd_info_entry *root;
 92
 93	/*
 94	 * All nodes are automatically removed at snd_card_disconnect(),
 95	 * by following to link list.
 96	 */
 97	root = snd_info_create_card_entry(oxfw->card, "firewire",
 98					  oxfw->card->proc_root);
 99	if (root == NULL)
100		return;
101	root->mode = S_IFDIR | 0555;
102
103	add_node(oxfw, root, "formation", proc_read_formation);
104}