diff options
| -rw-r--r-- | sound/firewire/dice/dice-interface.h | 9 | ||||
| -rw-r--r-- | sound/firewire/dice/dice-proc.c | 10 | ||||
| -rw-r--r-- | sound/firewire/dice/dice-transaction.c | 49 |
3 files changed, 40 insertions, 28 deletions
diff --git a/sound/firewire/dice/dice-interface.h b/sound/firewire/dice/dice-interface.h index 15a484b05298..9cad3d608229 100644 --- a/sound/firewire/dice/dice-interface.h +++ b/sound/firewire/dice/dice-interface.h @@ -175,13 +175,18 @@ #define GLOBAL_SAMPLE_RATE 0x05c /* + * Some old firmware versions do not have the following global registers. + * Windows drivers produced by TCAT lost backward compatibility in its + * early release because they can handle firmware only which supports the + * following registers. + */ + +/* * The version of the DICE driver specification that this device conforms to; * read-only. */ #define GLOBAL_VERSION 0x060 -/* Some old firmware versions do not have the following global registers: */ - /* * Supported sample rates and clock sources; read-only. */ diff --git a/sound/firewire/dice/dice-proc.c b/sound/firewire/dice/dice-proc.c index f5c1d1bced59..cc079323ed30 100644 --- a/sound/firewire/dice/dice-proc.c +++ b/sound/firewire/dice/dice-proc.c @@ -148,12 +148,12 @@ static void dice_proc_read(struct snd_info_entry *entry, >> 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, " 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); snd_iprintf(buffer, " clock caps:"); for (i = 0; i <= 6; ++i) if (buf.global.clock_caps & (1 << i)) diff --git a/sound/firewire/dice/dice-transaction.c b/sound/firewire/dice/dice-transaction.c index 0f0350320ae8..b7e138b5abcf 100644 --- a/sound/firewire/dice/dice-transaction.c +++ b/sound/firewire/dice/dice-transaction.c @@ -265,7 +265,7 @@ int snd_dice_transaction_reinit(struct snd_dice *dice) static int get_subaddrs(struct snd_dice *dice) { static const int min_values[10] = { - 10, 0x64 / 4, + 10, 0x60 / 4, 10, 0x18 / 4, 10, 0x18 / 4, 0, 0, @@ -301,33 +301,40 @@ static int get_subaddrs(struct snd_dice *dice) } } - /* - * Check that the implemented DICE driver specification major version - * number matches. - */ - err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST, - DICE_PRIVATE_SPACE + - be32_to_cpu(pointers[0]) * 4 + GLOBAL_VERSION, - &version, sizeof(version), 0); - if (err < 0) - goto end; + if (be32_to_cpu(pointers[1]) > 0x18) { + /* + * Check that the implemented DICE driver specification major + * version number matches. + */ + err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST, + DICE_PRIVATE_SPACE + + be32_to_cpu(pointers[0]) * 4 + GLOBAL_VERSION, + &version, sizeof(version), 0); + if (err < 0) + goto end; - if ((version & cpu_to_be32(0xff000000)) != cpu_to_be32(0x01000000)) { - dev_err(&dice->unit->device, - "unknown DICE version: 0x%08x\n", be32_to_cpu(version)); - err = -ENODEV; - goto end; + if ((version & cpu_to_be32(0xff000000)) != + cpu_to_be32(0x01000000)) { + dev_err(&dice->unit->device, + "unknown DICE version: 0x%08x\n", + be32_to_cpu(version)); + err = -ENODEV; + goto end; + } + + /* Set up later. */ + dice->clock_caps = 1; } dice->global_offset = be32_to_cpu(pointers[0]) * 4; dice->tx_offset = be32_to_cpu(pointers[2]) * 4; dice->rx_offset = be32_to_cpu(pointers[4]) * 4; - dice->sync_offset = be32_to_cpu(pointers[6]) * 4; - dice->rsrv_offset = be32_to_cpu(pointers[8]) * 4; - /* Set up later. */ - if (be32_to_cpu(pointers[1]) * 4 >= GLOBAL_CLOCK_CAPABILITIES + 4) - dice->clock_caps = 1; + /* Old firmware doesn't support these fields. */ + if (pointers[7]) + dice->sync_offset = be32_to_cpu(pointers[6]) * 4; + if (pointers[9]) + dice->rsrv_offset = be32_to_cpu(pointers[8]) * 4; end: kfree(pointers); return err; |