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