@@ -25,10 +25,18 @@
#define SID_MASK 0xF
+struct q6usb_status {
+ unsigned int num_pcm;
+ unsigned int chip_index;
+ unsigned int pcm_index;
+};
+
struct q6usb_port_data {
struct q6afe_usb_cfg usb_cfg;
struct snd_soc_usb *usb;
struct q6usb_offload priv;
+ unsigned long available_card_slot;
+ struct q6usb_status status[SNDRV_CARDS];
int active_idx;
};
@@ -110,6 +118,14 @@ static int q6usb_alsa_connection_cb(struct snd_soc_usb *usb,
if (connected) {
/* We only track the latest USB headset plugged in */
data->active_idx = sdev->card_idx;
+
+ set_bit(sdev->card_idx, &data->available_card_slot);
+ data->status[sdev->card_idx].num_pcm = sdev->num_playback;
+ data->status[sdev->card_idx].chip_index = sdev->chip_idx;
+ } else {
+ clear_bit(sdev->card_idx, &data->available_card_slot);
+ data->status[sdev->card_idx].num_pcm = 0;
+ data->status[sdev->card_idx].chip_index = 0;
}
return 0;
The USB backend should know about which sound resources are being shared between the ASoC and USB SND paths. This can be utilized to properly select and maintain the offloading devices. Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com> --- sound/soc/qcom/qdsp6/q6usb.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)