static int uni_reader_start(struct uniperif *reader)
{
/* The reader should be stopped */
if (reader->state != UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state", __func__);
return -EINVAL;
}
/* Enable reader interrupts (and clear possible stalled ones) */
SET_UNIPERIF_ITS_BCLR_FIFO_ERROR(reader);
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(reader);
/* Launch the reader */
SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(reader);
/* Update state to started */
reader->state = UNIPERIF_STATE_STARTED;
return 0;
}
static int uni_player_start(struct uniperif *player)
{
int ret;
/* The player should be stopped */
if (player->state != UNIPERIF_STATE_STOPPED) {
dev_err(player->dev, "%s: invalid player state\n", __func__);
return -EINVAL;
}
ret = clk_prepare_enable(player->clk);
if (ret) {
dev_err(player->dev, "%s: Failed to enable clock\n", __func__);
return ret;
}
/* Clear any pending interrupts */
SET_UNIPERIF_ITS_BCLR(player, GET_UNIPERIF_ITS(player));
/* Set the interrupt mask */
SET_UNIPERIF_ITM_BSET_DMA_ERROR(player);
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(player);
/* Enable underflow recovery interrupts */
if (player->underflow_enabled) {
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(player);
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(player);
}
ret = sti_uniperiph_reset(player);
if (ret < 0) {
clk_disable_unprepare(player->clk);
return ret;
}
/*
* Does not use IEC61937 features of the uniperipheral hardware.
* Instead it performs IEC61937 in software and inserts it directly
* into the audio data stream. As such, when encoded mode is selected,
* linear pcm mode is still used, but with the differences of the
* channel status bits set for encoded mode and the validity bits set.
*/
SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(player);
/*
* If iec958 formatting is required for hdmi or spdif, then it must be
* enabled after the operation mode is set. If set prior to this, it
* will not take affect and hang the player.
*/
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
if (UNIPERIF_TYPE_IS_IEC958(player))
SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player);
/* Force channel status update (no update if clk disable) */
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player);
else
SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player);
/* Update state to started */
player->state = UNIPERIF_STATE_STARTED;
return 0;
}
