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ALSA: dice: add a proc file to show device information

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For easier debugging, add a proc file to show the device's capabilities
and current status.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch 2012-01-05 22:36:08 +01:00
parent 640d9b421d
commit c614475b0e
1 changed files with 246 additions and 0 deletions
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246
sound/firewire/dice.c
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@ -22,6 +22,7 @@
#include <sound/core.h> #include <sound/core.h>
#include <sound/firewire.h> #include <sound/firewire.h>
#include <sound/hwdep.h> #include <sound/hwdep.h>
#include <sound/info.h>
#include <sound/initval.h> #include <sound/initval.h>
#include <sound/pcm.h> #include <sound/pcm.h>
#include <sound/pcm_params.h> #include <sound/pcm_params.h>
@ -857,6 +858,249 @@ static int dice_create_hwdep(struct dice *dice)
return 0; return 0;
} }
static int dice_proc_read_mem(struct dice *dice, void *buffer,
unsigned int offset_q, unsigned int quadlets)
{
unsigned int i;
int err;
err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
DICE_PRIVATE_SPACE + 4 * offset_q,
buffer, 4 * quadlets, 0);
if (err < 0)
return err;
for (i = 0; i < quadlets; ++i)
be32_to_cpus(&((u32 *)buffer)[i]);
return 0;
}
static const char *str_from_array(const char *const strs[], unsigned int count,
unsigned int i)
{
if (i < count)
return strs[i];
else
return "(unknown)";
}
static void dice_proc_fixup_string(char *s, unsigned int size)
{
unsigned int i;
for (i = 0; i < size; i += 4)
cpu_to_le32s((u32 *)(s + i));
for (i = 0; i < size - 2; ++i) {
if (s[i] == '\0')
return;
if (s[i] == '\\' && s[i + 1] == '\\') {
s[i + 2] = '\0';
return;
}
}
s[size - 1] = '\0';
}
static void dice_proc_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
static const char *const section_names[5] = {
"global", "tx", "rx", "ext_sync", "unused2"
};
static const char *const clock_sources[] = {
"aes1", "aes2", "aes3", "aes4", "aes", "adat", "tdif",
"wc", "arx1", "arx2", "arx3", "arx4", "internal"
};
static const char *const rates[] = {
"32000", "44100", "48000", "88200", "96000", "176400", "192000",
"any low", "any mid", "any high", "none"
};
struct dice *dice = entry->private_data;
u32 sections[ARRAY_SIZE(section_names) * 2];
struct {
u32 number;
u32 size;
} tx_rx_header;
union {
struct {
u32 owner_hi, owner_lo;
u32 notification;
char nick_name[NICK_NAME_SIZE];
u32 clock_select;
u32 enable;
u32 status;
u32 extended_status;
u32 sample_rate;
u32 version;
u32 clock_caps;
char clock_source_names[CLOCK_SOURCE_NAMES_SIZE];
} global;
struct {
u32 iso;
u32 number_audio;
u32 number_midi;
u32 speed;
char names[TX_NAMES_SIZE];
u32 ac3_caps;
u32 ac3_enable;
} tx;
struct {
u32 iso;
u32 seq_start;
u32 number_audio;
u32 number_midi;
char names[RX_NAMES_SIZE];
u32 ac3_caps;
u32 ac3_enable;
} rx;
struct {
u32 clock_source;
u32 locked;
u32 rate;
u32 adat_user_data;
} ext_sync;
} buf;
unsigned int quadlets, stream, i;
if (dice_proc_read_mem(dice, sections, 0, ARRAY_SIZE(sections)) < 0)
return;
snd_iprintf(buffer, "sections:\n");
for (i = 0; i < ARRAY_SIZE(section_names); ++i)
snd_iprintf(buffer, " %s: offset %u, size %u\n",
section_names[i],
sections[i * 2], sections[i * 2 + 1]);
quadlets = min_t(u32, sections[1], sizeof(buf.global) / 4);
if (dice_proc_read_mem(dice, &buf.global, sections[0], quadlets) < 0)
return;
snd_iprintf(buffer, "global:\n");
snd_iprintf(buffer, " owner: %04x:%04x%08x\n",
buf.global.owner_hi >> 16,
buf.global.owner_hi & 0xffff, buf.global.owner_lo);
snd_iprintf(buffer, " notification: %08x\n", buf.global.notification);
dice_proc_fixup_string(buf.global.nick_name, NICK_NAME_SIZE);
snd_iprintf(buffer, " nick name: %s\n", buf.global.nick_name);
snd_iprintf(buffer, " clock select: %s %s\n",
str_from_array(clock_sources, ARRAY_SIZE(clock_sources),
buf.global.clock_select & CLOCK_SOURCE_MASK),
str_from_array(rates, ARRAY_SIZE(rates),
(buf.global.clock_select & CLOCK_RATE_MASK)
>> CLOCK_RATE_SHIFT));
snd_iprintf(buffer, " enable: %u\n", buf.global.enable);
snd_iprintf(buffer, " status: %slocked %s\n",
buf.global.status & STATUS_SOURCE_LOCKED ? "" : "un",
str_from_array(rates, ARRAY_SIZE(rates),
(buf.global.status &
STATUS_NOMINAL_RATE_MASK)
>> CLOCK_RATE_SHIFT));
snd_iprintf(buffer, " ext status: %08x\n", buf.global.extended_status);
snd_iprintf(buffer, " sample rate: %u\n", buf.global.sample_rate);
snd_iprintf(buffer, " version: %u.%u.%u.%u\n",
(buf.global.version >> 24) & 0xff,
(buf.global.version >> 16) & 0xff,
(buf.global.version >> 8) & 0xff,
(buf.global.version >> 0) & 0xff);
if (quadlets >= 90) {
snd_iprintf(buffer, " clock caps:");
for (i = 0; i <= 6; ++i)
if (buf.global.clock_caps & (1 << i))
snd_iprintf(buffer, " %s", rates[i]);
for (i = 0; i <= 12; ++i)
if (buf.global.clock_caps & (1 << (16 + i)))
snd_iprintf(buffer, " %s", clock_sources[i]);
snd_iprintf(buffer, "\n");
dice_proc_fixup_string(buf.global.clock_source_names,
CLOCK_SOURCE_NAMES_SIZE);
snd_iprintf(buffer, " clock source names: %s\n",
buf.global.clock_source_names);
}
if (dice_proc_read_mem(dice, &tx_rx_header, sections[2], 2) < 0)
return;
quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.tx));
for (stream = 0; stream < tx_rx_header.number; ++stream) {
if (dice_proc_read_mem(dice, &buf.tx, sections[2] + 2 +
stream * tx_rx_header.size,
quadlets) < 0)
break;
snd_iprintf(buffer, "tx %u:\n", stream);
snd_iprintf(buffer, " iso channel: %d\n", (int)buf.tx.iso);
snd_iprintf(buffer, " audio channels: %u\n",
buf.tx.number_audio);
snd_iprintf(buffer, " midi ports: %u\n", buf.tx.number_midi);
snd_iprintf(buffer, " speed: S%u\n", 100u << buf.tx.speed);
if (quadlets >= 68) {
dice_proc_fixup_string(buf.tx.names, TX_NAMES_SIZE);
snd_iprintf(buffer, " names: %s\n", buf.tx.names);
}
if (quadlets >= 70) {
snd_iprintf(buffer, " ac3 caps: %08x\n",
buf.tx.ac3_caps);
snd_iprintf(buffer, " ac3 enable: %08x\n",
buf.tx.ac3_enable);
}
}
if (dice_proc_read_mem(dice, &tx_rx_header, sections[4], 2) < 0)
return;
quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.rx));
for (stream = 0; stream < tx_rx_header.number; ++stream) {
if (dice_proc_read_mem(dice, &buf.rx, sections[4] + 2 +
stream * tx_rx_header.size,
quadlets) < 0)
break;
snd_iprintf(buffer, "rx %u:\n", stream);
snd_iprintf(buffer, " iso channel: %d\n", (int)buf.rx.iso);
snd_iprintf(buffer, " sequence start: %u\n",
(int)buf.rx.seq_start);
snd_iprintf(buffer, " audio channels: %u\n",
buf.rx.number_audio);
snd_iprintf(buffer, " midi ports: %u\n", buf.rx.number_midi);
if (quadlets >= 68) {
dice_proc_fixup_string(buf.rx.names, RX_NAMES_SIZE);
snd_iprintf(buffer, " names: %s\n", buf.rx.names);
}
if (quadlets >= 70) {
snd_iprintf(buffer, " ac3 caps: %08x\n",
buf.rx.ac3_caps);
snd_iprintf(buffer, " ac3 enable: %08x\n",
buf.rx.ac3_enable);
}
}
quadlets = min_t(u32, sections[7], sizeof(buf.ext_sync) / 4);
if (quadlets >= 4) {
if (dice_proc_read_mem(dice, &buf.ext_sync,
sections[6], 4) < 0)
return;
snd_iprintf(buffer, "ext status:\n");
snd_iprintf(buffer, " clock source: %s\n",
str_from_array(clock_sources,
ARRAY_SIZE(clock_sources),
buf.ext_sync.clock_source));
snd_iprintf(buffer, " locked: %u\n", buf.ext_sync.locked);
snd_iprintf(buffer, " rate: %s\n",
str_from_array(rates, ARRAY_SIZE(rates),
buf.ext_sync.rate));
snd_iprintf(buffer, " adat user data: ");
if (buf.ext_sync.adat_user_data & ADAT_USER_DATA_NO_DATA)
snd_iprintf(buffer, "-\n");
else
snd_iprintf(buffer, "%x\n",
buf.ext_sync.adat_user_data);
}
}
static void dice_create_proc(struct dice *dice)
{
struct snd_info_entry *entry;
if (!snd_card_proc_new(dice->card, "dice", &entry))
snd_info_set_text_ops(entry, dice, dice_proc_read);
}
static void dice_card_free(struct snd_card *card) static void dice_card_free(struct snd_card *card)
{ {
struct dice *dice = card->private_data; struct dice *dice = card->private_data;
@ -1131,6 +1375,8 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
if (err < 0) if (err < 0)
goto error; goto error;
dice_create_proc(dice);
err = snd_card_register(card); err = snd_card_register(card);
if (err < 0) if (err < 0)
goto error; goto error;