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ASoC: mediatek: btcvsd add loopback 

add direct loopback path from rx to tx

Signed-off-by: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
KaiChieh Chuang 2019-02-27 09:30:44 +08:00 committed by Mark Brown
parent 7b6b0049e2
commit f060f46f09
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 68 additions and 1 deletions
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69
sound/soc/mediatek/common/mtk-btcvsd.c
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@ -49,6 +49,7 @@ enum bt_sco_state {
BT_SCO_STATE_IDLE,
BT_SCO_STATE_RUNNING,
BT_SCO_STATE_ENDING,
BT_SCO_STATE_LOOPBACK,
};
enum bt_sco_direct {
@ -486,7 +487,8 @@ static irqreturn_t mtk_btcvsd_snd_irq_handler(int irq_id, void *dev)
if (bt->rx->state != BT_SCO_STATE_RUNNING &&
bt->rx->state != BT_SCO_STATE_ENDING &&
bt->tx->state != BT_SCO_STATE_RUNNING &&
bt->tx->state != BT_SCO_STATE_ENDING) {
bt->tx->state != BT_SCO_STATE_ENDING &&
bt->tx->state != BT_SCO_STATE_LOOPBACK) {
dev_warn(bt->dev, "%s(), in idle state: rx->state: %d, tx->state: %d\n",
__func__, bt->rx->state, bt->tx->state);
goto irq_handler_exit;
@ -512,6 +514,42 @@ static irqreturn_t mtk_btcvsd_snd_irq_handler(int irq_id, void *dev)
buf_cnt_tx = btsco_packet_info[packet_type][2];
buf_cnt_rx = btsco_packet_info[packet_type][3];
if (bt->tx->state == BT_SCO_STATE_LOOPBACK) {
u8 *src, *dst;
unsigned long connsys_addr_rx, ap_addr_rx;
unsigned long connsys_addr_tx, ap_addr_tx;
connsys_addr_rx = *bt->bt_reg_pkt_r;
ap_addr_rx = (unsigned long)bt->bt_sram_bank2_base +
(connsys_addr_rx & 0xFFFF);
connsys_addr_tx = *bt->bt_reg_pkt_w;
ap_addr_tx = (unsigned long)bt->bt_sram_bank2_base +
(connsys_addr_tx & 0xFFFF);
if (connsys_addr_tx == 0xdeadfeed ||
connsys_addr_rx == 0xdeadfeed) {
/* bt return 0xdeadfeed if read reg during bt sleep */
dev_warn(bt->dev, "%s(), connsys_addr_tx == 0xdeadfeed\n",
__func__);
goto irq_handler_exit;
}
src = (u8 *)ap_addr_rx;
dst = (u8 *)ap_addr_tx;
mtk_btcvsd_snd_data_transfer(BT_SCO_DIRECT_BT2ARM, src,
bt->tx->temp_packet_buf,
packet_length,
packet_num);
mtk_btcvsd_snd_data_transfer(BT_SCO_DIRECT_ARM2BT,
bt->tx->temp_packet_buf, dst,
packet_length,
packet_num);
bt->rx->rw_cnt++;
bt->tx->rw_cnt++;
}
if (bt->rx->state == BT_SCO_STATE_RUNNING ||
bt->rx->state == BT_SCO_STATE_ENDING) {
if (bt->rx->xrun) {
@ -1067,6 +1105,33 @@ static int btcvsd_band_set(struct snd_kcontrol *kcontrol,
return 0;
}
static int btcvsd_loopback_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct mtk_btcvsd_snd *bt = snd_soc_component_get_drvdata(cmpnt);
bool lpbk_en = bt->tx->state == BT_SCO_STATE_LOOPBACK;
ucontrol->value.integer.value[0] = lpbk_en;
return 0;
}
static int btcvsd_loopback_set(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct mtk_btcvsd_snd *bt = snd_soc_component_get_drvdata(cmpnt);
if (ucontrol->value.integer.value[0]) {
mtk_btcvsd_snd_set_state(bt, bt->tx, BT_SCO_STATE_LOOPBACK);
mtk_btcvsd_snd_set_state(bt, bt->rx, BT_SCO_STATE_LOOPBACK);
} else {
mtk_btcvsd_snd_set_state(bt, bt->tx, BT_SCO_STATE_RUNNING);
mtk_btcvsd_snd_set_state(bt, bt->rx, BT_SCO_STATE_RUNNING);
}
return 0;
}
static int btcvsd_tx_mute_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@ -1202,6 +1267,8 @@ static int btcvsd_tx_timestamp_get(struct snd_kcontrol *kcontrol,
static const struct snd_kcontrol_new mtk_btcvsd_snd_controls[] = {
SOC_ENUM_EXT("BTCVSD Band", btcvsd_enum[0],
btcvsd_band_get, btcvsd_band_set),
SOC_SINGLE_BOOL_EXT("BTCVSD Loopback Switch", 0,
btcvsd_loopback_get, btcvsd_loopback_set),
SOC_SINGLE_BOOL_EXT("BTCVSD Tx Mute Switch", 0,
btcvsd_tx_mute_get, btcvsd_tx_mute_set),
SOC_SINGLE_BOOL_EXT("BTCVSD Tx Irq Received Switch", 0,