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Commit 8839eeda authored by Stefan Richter's avatar Stefan Richter Committed by Takashi Iwai
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ALSA: isight: add AudioEnable register write 



which is needed to get the iSight to talk.

Signed-off-by: default avatarStefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f2934cd4

sound/firewire/isight.c

+14 −3
Original line number Diff line number Diff line
@@ -345,7 +345,7 @@ static int isight_hw_free(struct snd_pcm_substream *substream) 


static int isight_start_streaming(struct isight *isight)

{

	__be32 sample_rate;

	__be32 value;

	unsigned int i;

	int err;
@@ -356,10 +356,10 @@ static int isight_start_streaming(struct isight *isight) 
			return 0;

	}



	sample_rate = cpu_to_be32(RATE_48000);

	value = cpu_to_be32(RATE_48000);

	err = snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,

				 isight->audio_base + REG_SAMPLE_RATE,

				 &sample_rate, 4);

				 &value, 4);

	if (err < 0)

		return err;
@@ -367,6 +367,13 @@ static int isight_start_streaming(struct isight *isight) 
	if (err < 0)

		goto error;



	value = cpu_to_be32(AUDIO_ENABLE);

	err = snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,

				 isight->audio_base + REG_AUDIO_ENABLE,

				 &value, 4);

	if (err < 0)

		goto err_resources;



	isight->context = fw_iso_context_create(isight->device->card,

						FW_ISO_CONTEXT_RECEIVE,

						isight->resources.channel,
@@ -400,6 +407,10 @@ err_context: 
	fw_iso_context_destroy(isight->context);

	isight->context = NULL;

err_resources:

	value = 0;

	snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,

			   isight->audio_base + REG_AUDIO_ENABLE,

			   &value, 4);

	fw_iso_resources_free(&isight->resources);

error:

	return err;