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author | Takashi Iwai <tiwai@suse.de> | 2013-10-22 10:02:57 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2013-10-22 10:02:57 +0200 |
commit | 861e66d3418a90f57b31a50110fc70b23569c551 (patch) | |
tree | ffa0d5bf8dc3e4b82b88d8942390a11d827423f9 /sound/firewire/isight.c | |
parent | b55447a7301b12d509df4b2909ed38d125ad83d4 (diff) | |
parent | b20be8de1b3972ccf9af72850b045214faa8d830 (diff) | |
download | linux-861e66d3418a90f57b31a50110fc70b23569c551.tar.bz2 |
Merge branch 'dice-driver-playback-only' of git://git.alsa-project.org/alsa-kprivate into for-next
Diffstat (limited to 'sound/firewire/isight.c')
-rw-r--r-- | sound/firewire/isight.c | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c index 58a5afefdc69..fd42e6b315e6 100644 --- a/sound/firewire/isight.c +++ b/sound/firewire/isight.c @@ -217,7 +217,7 @@ static void isight_packet(struct fw_iso_context *context, u32 cycle, static int isight_connect(struct isight *isight) { - int ch, err, rcode, errors = 0; + int ch, err; __be32 value; retry_after_bus_reset: @@ -230,27 +230,19 @@ retry_after_bus_reset: } value = cpu_to_be32(ch | (isight->device->max_speed << SPEED_SHIFT)); - for (;;) { - rcode = fw_run_transaction( - isight->device->card, - TCODE_WRITE_QUADLET_REQUEST, - isight->device->node_id, - isight->resources.generation, - isight->device->max_speed, - isight->audio_base + REG_ISO_TX_CONFIG, - &value, 4); - if (rcode == RCODE_COMPLETE) { - return 0; - } else if (rcode == RCODE_GENERATION) { - fw_iso_resources_free(&isight->resources); - goto retry_after_bus_reset; - } else if (rcode_is_permanent_error(rcode) || ++errors >= 3) { - err = -EIO; - goto err_resources; - } - msleep(5); + err = snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST, + isight->audio_base + REG_ISO_TX_CONFIG, + &value, 4, FW_FIXED_GENERATION | + isight->resources.generation); + if (err == -EAGAIN) { + fw_iso_resources_free(&isight->resources); + goto retry_after_bus_reset; + } else if (err < 0) { + goto err_resources; } + return 0; + err_resources: fw_iso_resources_free(&isight->resources); error: @@ -315,17 +307,19 @@ static int isight_hw_params(struct snd_pcm_substream *substream, static int reg_read(struct isight *isight, int offset, __be32 *value) { return snd_fw_transaction(isight->unit, TCODE_READ_QUADLET_REQUEST, - isight->audio_base + offset, value, 4); + isight->audio_base + offset, value, 4, 0); } static int reg_write(struct isight *isight, int offset, __be32 value) { return snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST, - isight->audio_base + offset, &value, 4); + isight->audio_base + offset, &value, 4, 0); } static void isight_stop_streaming(struct isight *isight) { + __be32 value; + if (!isight->context) return; @@ -333,7 +327,10 @@ static void isight_stop_streaming(struct isight *isight) fw_iso_context_destroy(isight->context); isight->context = NULL; fw_iso_resources_free(&isight->resources); - reg_write(isight, REG_AUDIO_ENABLE, 0); + value = 0; + snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST, + isight->audio_base + REG_AUDIO_ENABLE, + &value, 4, FW_QUIET); } static int isight_hw_free(struct snd_pcm_substream *substream) |