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kernel add
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/*
* oxfw_proc.c - a part of driver for OXFW970/971 based devices
*
* Copyright (c) 2014 Takashi Sakamoto
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#include "./oxfw.h"
static void proc_read_formation(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct snd_oxfw *oxfw = entry->private_data;
struct snd_oxfw_stream_formation formation, curr;
u8 *format;
char flag;
int i, err;
/* Show input. */
err = snd_oxfw_stream_get_current_formation(oxfw,
AVC_GENERAL_PLUG_DIR_IN,
&curr);
if (err < 0)
return;
snd_iprintf(buffer, "Input Stream to device:
");
snd_iprintf(buffer, "\tRate\tPCM\tMIDI
");
for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
format = oxfw->rx_stream_formats[i];
if (format == NULL)
continue;
err = snd_oxfw_stream_parse_format(format, &formation);
if (err < 0)
continue;
if (memcmp(&formation, &curr, sizeof(curr)) == 0)
flag = '*';
else
flag = ' ';
snd_iprintf(buffer, "%c\t%d\t%d\t%d
", flag,
formation.rate, formation.pcm, formation.midi);
}
if (!oxfw->has_output)
return;
/* Show output. */
err = snd_oxfw_stream_get_current_formation(oxfw,
AVC_GENERAL_PLUG_DIR_OUT,
&curr);
if (err < 0)
return;
snd_iprintf(buffer, "Output Stream from device:
");
snd_iprintf(buffer, "\tRate\tPCM\tMIDI
");
for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
format = oxfw->tx_stream_formats[i];
if (format == NULL)
continue;
err = snd_oxfw_stream_parse_format(format, &formation);
if (err < 0)
continue;
if (memcmp(&formation, &curr, sizeof(curr)) == 0)
flag = '*';
else
flag = ' ';
snd_iprintf(buffer, "%c\t%d\t%d\t%d
", flag,
formation.rate, formation.pcm, formation.midi);
}
}
static void add_node(struct snd_oxfw *oxfw, 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(oxfw->card, name, root);
if (entry == NULL)
return;
snd_info_set_text_ops(entry, oxfw, op);
if (snd_info_register(entry) < 0)
snd_info_free_entry(entry);
}
void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
{
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(oxfw->card, "firewire",
oxfw->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(oxfw, root, "formation", proc_read_formation);
}
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