diff options
Diffstat (limited to 'sound/firewire')
| -rw-r--r-- | sound/firewire/dice.c | 55 |
1 files changed, 42 insertions, 13 deletions
diff --git a/sound/firewire/dice.c b/sound/firewire/dice.c index b081021064ed..d3f3eb7a546a 100644 --- a/sound/firewire/dice.c +++ b/sound/firewire/dice.c @@ -75,6 +75,7 @@ #define CLOCK_RATE_ANY_MID 0x00000800 #define CLOCK_RATE_ANY_HIGH 0x00000900 #define CLOCK_RATE_NONE 0x00000a00 +#define CLOCK_RATE_SHIFT 8 #define GLOBAL_ENABLE 0x050 #define ENABLE 0x00000001 #define GLOBAL_STATUS 0x054 @@ -248,6 +249,16 @@ MODULE_DESCRIPTION("DICE driver"); MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); MODULE_LICENSE("GPL v2"); +static const unsigned int dice_rates[] = { + [0] = 32000, + [1] = 44100, + [2] = 48000, + [3] = 88200, + [4] = 96000, + [5] = 176400, + [6] = 192000, +}; + static inline u64 global_address(struct dice *dice, unsigned int offset) { return DICE_PRIVATE_SPACE + dice->global_offset + offset; @@ -508,9 +519,6 @@ static int dice_open(struct snd_pcm_substream *substream) SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER, .formats = AMDTP_OUT_PCM_FORMAT_BITS, - .rates = SNDRV_PCM_RATE_44100, - .rate_min = 44100, - .rate_max = 44100, .buffer_bytes_max = 16 * 1024 * 1024, .period_bytes_min = 1, .period_bytes_max = UINT_MAX, @@ -519,10 +527,21 @@ static int dice_open(struct snd_pcm_substream *substream) }; struct dice *dice = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; - __be32 number_audio, number_midi; + __be32 clock_sel, number_audio, number_midi; + unsigned int rate; int err; err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST, + global_address(dice, GLOBAL_CLOCK_SELECT), + &clock_sel, 4); + if (err < 0) + return err; + rate = (be32_to_cpu(clock_sel) & CLOCK_RATE_MASK) >> CLOCK_RATE_SHIFT; + if (rate >= ARRAY_SIZE(dice_rates)) + return -ENXIO; + rate = dice_rates[rate]; + + err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST, rx_address(dice, RX_NUMBER_AUDIO), &number_audio, 4); if (err < 0) @@ -534,10 +553,14 @@ static int dice_open(struct snd_pcm_substream *substream) return err; runtime->hw = hardware; + + runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate); + snd_pcm_limit_hw_rates(runtime); + runtime->hw.channels_min = be32_to_cpu(number_audio); runtime->hw.channels_max = be32_to_cpu(number_audio); - amdtp_out_stream_set_rate(&dice->stream, 44100); + amdtp_out_stream_set_rate(&dice->stream, rate); amdtp_out_stream_set_pcm(&dice->stream, be32_to_cpu(number_audio)); amdtp_out_stream_set_midi(&dice->stream, be32_to_cpu(number_midi)); @@ -746,17 +769,9 @@ static int dice_create_pcm(struct dice *dice) .page = snd_pcm_lib_get_vmalloc_page, .mmap = snd_pcm_lib_mmap_vmalloc, }; - __be32 clock; struct snd_pcm *pcm; int err; - clock = cpu_to_be32(CLOCK_SOURCE_ARX1 | CLOCK_RATE_44100); - err = snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST, - global_address(dice, GLOBAL_CLOCK_SELECT), - &clock, 4); - if (err < 0) - return err; - err = snd_pcm_new(dice->card, "DICE", 0, 1, 0, &pcm); if (err < 0) return err; @@ -897,6 +912,7 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id) { struct snd_card *card; struct dice *dice; + __be32 clock_sel; int err; err = snd_card_create(-1, NULL, THIS_MODULE, sizeof(*dice), &card); @@ -938,6 +954,19 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id) dice_card_strings(dice); + err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST, + global_address(dice, GLOBAL_CLOCK_SELECT), + &clock_sel, 4); + if (err < 0) + goto error; + clock_sel &= cpu_to_be32(~CLOCK_SOURCE_MASK); + clock_sel |= cpu_to_be32(CLOCK_SOURCE_ARX1); + err = snd_fw_transaction(unit, TCODE_WRITE_QUADLET_REQUEST, + global_address(dice, GLOBAL_CLOCK_SELECT), + &clock_sel, 4); + if (err < 0) + goto error; + err = dice_create_pcm(dice); if (err < 0) goto error; |
