static int bcm947xx_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;
struct bcm947xx_runtime_data *brtd = substream->runtime->private_data;
DBG("%s %s\n", __FUNCTION__, bcm947xx_direction_str(substream));
DBG("%s: i2s intstatus 0x%x intmask 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->intstatus),
R_REG(snd_bcm->osh, &snd_bcm->regs->intmask));
/* #if required because dma_dump is unavailable in non-debug builds. */
#if BCM947XX_DUMP_RING_BUFFER_ON_PCM_CLOSE_ON
{
/* dump dma rings to console */
#if !defined(FIFOERROR_DUMP_SIZE)
#define FIFOERROR_DUMP_SIZE 8192
#endif
char *tmp;
struct bcmstrbuf b;
if (snd_bcm->di[0] && (tmp = MALLOC(snd_bcm->osh, FIFOERROR_DUMP_SIZE))) {
bcm_binit(&b, tmp, FIFOERROR_DUMP_SIZE);
dma_dump(snd_bcm->di[0], &b, TRUE);
printbig(tmp);
MFREE(snd_bcm->osh, tmp, FIFOERROR_DUMP_SIZE);
}
}
#endif /* BCM947XX_DUMP_RING_BUFFER_ON_PCM_CLOSE_ON */
/* reclaim all descriptors */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
dma_rxreset(snd_bcm->di[0]);
dma_rxreclaim(snd_bcm->di[0]);
} else {
dma_txreset(snd_bcm->di[0]);
dma_txreclaim(snd_bcm->di[0], HNDDMA_RANGE_ALL);
}
if (brtd)
kfree(brtd);
else
DBG("%s: called with brtd == NULL\n", __FUNCTION__);
return 0;
}
/* Maybe called from snd_period_elapsed. */
static int bcm947xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm947xx_runtime_data *brtd = runtime->private_data;
uint32 intmask = R_REG(snd_bcm->osh, &snd_bcm->regs->intmask);
int ret = 0;
DBG("%s %s w/cmd=%d\n", __FUNCTION__, bcm947xx_direction_str(substream), cmd);
spin_lock(&brtd->lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
brtd->bytes_pending = snd_pcm_lib_buffer_bytes(substream);
bcm947xx_pcm_enqueue(substream);
} else {
// dma_txresume(snd_bcm->di[0]);
}
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
// dma_txsuspend(snd_bcm->di[0]);
break;
}
/* fall-thru */
case SNDRV_PCM_TRIGGER_STOP:
/* Reset the disable interrupts, DMA RX/TX channel.
Might get here as a result of calling snd_pcm_period_elapsed.
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
intmask &= ~intmask_capture;
W_REG(snd_bcm->osh, &snd_bcm->regs->intmask, intmask);
dma_rxreset(snd_bcm->di[0]);
dma_rxreclaim(snd_bcm->di[0]);
dma_rxinit(snd_bcm->di[0]);
} else {
/* Disable transmit interrupts. */
intmask &= ~intmask_playback;
W_REG(snd_bcm->osh, &snd_bcm->regs->intmask, intmask);
dma_txreset(snd_bcm->di[0]);
dma_txreclaim(snd_bcm->di[0], HNDDMA_RANGE_ALL);
dma_txinit(snd_bcm->di[0]);
if (BCM947XX_DMA_LOOPBACK_ENABLED)
dma_fifoloopbackenable(snd_bcm->di[0]);
// dma_txsuspend(snd_bcm->di[0]);
}
break;
default:
ret = -EINVAL;
}
spin_unlock(&brtd->lock);
DBG("%s: i2s intstatus 0x%x intmask 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->intstatus),
R_REG(snd_bcm->osh, &snd_bcm->regs->intmask));
return ret;
}
static int bcm947xx_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct bcm947xx_runtime_data *brtd;
int ret;
DBG("%s %s\n", __FUNCTION__, bcm947xx_direction_str(substream));
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
snd_soc_set_runtime_hwparams(substream, &bcm947xx_pcm_hardware_capture);
} else {
snd_soc_set_runtime_hwparams(substream, &bcm947xx_pcm_hardware_playback);
}
if (snd_bcm->in_use & ~(1 << substream->stream)) {
/* Another stream is in-use; set our constraints to match. */
if ((ret = bcm947xx_pcm_set_constraints(runtime, snd_bcm)) < 0)
return ret;
}
brtd = kzalloc(sizeof(struct bcm947xx_runtime_data), GFP_KERNEL);
if (brtd == NULL) {
return -ENOMEM;
}
spin_lock_init(&brtd->lock);
runtime->private_data = brtd;
/* probably should put this somewhere else, after setting up isr ??? */
/* Enable appropriate channel. */
/* Channel dma_XXXinit needs to be called before descriptors can be
* posted to the DMA. Posting currently occurs in the copy operator,
* which is called after prepare but before trigger(start).
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
dma_rxreset(snd_bcm->di[0]);
dma_rxinit(snd_bcm->di[0]);
} else {
dma_txreset(snd_bcm->di[0]);
dma_txinit(snd_bcm->di[0]);
if (BCM947XX_DMA_LOOPBACK_ENABLED)
dma_fifoloopbackenable(snd_bcm->di[0]);
// dma_txsuspend(snd_bcm->di[0]);
}
if (BCM947XX_PCM_DEBUG_ON) {
DBG("%s: i2s devcontrol 0x%x devstatus 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->devcontrol),
R_REG(snd_bcm->osh, &snd_bcm->regs->devstatus));
DBG("%s: i2s intstatus 0x%x intmask 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->intstatus),
R_REG(snd_bcm->osh, &snd_bcm->regs->intmask));
DBG("%s: i2s control 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->i2scontrol));
DBG("%s: i2s clkdivider 0x%x txplayth 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->clkdivider),
R_REG(snd_bcm->osh, &snd_bcm->regs->txplayth));
DBG("%s: i2s stxctrl 0x%x\n", __FUNCTION__,
R_REG(snd_bcm->osh, &snd_bcm->regs->stxctrl));
{
uint32 temp;
temp = R_REG(snd_bcm->osh, &snd_bcm->regs->fifocounter);
DBG("%s: i2s txcnt 0x%x rxcnt 0x%x\n", __FUNCTION__,
(temp & I2S_FC_TX_CNT_MASK)>> I2S_FC_TX_CNT_SHIFT,
(temp & I2S_FC_RX_CNT_MASK)>> I2S_FC_RX_CNT_SHIFT);
}
}
return 0;
}
static void
chipreset(struct bcm4xxx *ch)
{
bcmenetregs_t *regs;
uint32 clk, mdc;
ET_TRACE(("et%d: chipreset\n", ch->etc->unit));
regs = ch->regs;
if (!si_iscoreup(ch->sih)) {
if (!ch->etc->nicmode)
si_pci_setup(ch->sih, (1 << si_coreidx(ch->sih)));
/* power on reset: reset the enet core */
si_core_reset(ch->sih, 0, 0);
goto chipinreset;
}
/* read counters before resetting the chip */
if (ch->mibgood)
chipstatsupd(ch);
/* reset the tx dma engine */
if (ch->di)
dma_txreset(ch->di);
/* set emac into loopback mode to ensure no rx traffic */
W_REG(ch->osh, ®s->rxconfig, ERC_LE);
OSL_DELAY(1);
/* reset the rx dma engine */
if (ch->di)
dma_rxreset(ch->di);
/* reset core */
si_core_reset(ch->sih, 0, 0);
chipinreset:
/* must clear mib registers by hand */
W_REG(ch->osh, ®s->mibcontrol, EMC_RZ);
(void) R_REG(ch->osh, ®s->mib.tx_broadcast_pkts);
(void) R_REG(ch->osh, ®s->mib.tx_multicast_pkts);
(void) R_REG(ch->osh, ®s->mib.tx_len_64);
(void) R_REG(ch->osh, ®s->mib.tx_len_65_to_127);
(void) R_REG(ch->osh, ®s->mib.tx_len_128_to_255);
(void) R_REG(ch->osh, ®s->mib.tx_len_256_to_511);
(void) R_REG(ch->osh, ®s->mib.tx_len_512_to_1023);
(void) R_REG(ch->osh, ®s->mib.tx_len_1024_to_max);
(void) R_REG(ch->osh, ®s->mib.tx_jabber_pkts);
(void) R_REG(ch->osh, ®s->mib.tx_oversize_pkts);
(void) R_REG(ch->osh, ®s->mib.tx_fragment_pkts);
(void) R_REG(ch->osh, ®s->mib.tx_underruns);
(void) R_REG(ch->osh, ®s->mib.tx_total_cols);
(void) R_REG(ch->osh, ®s->mib.tx_single_cols);
(void) R_REG(ch->osh, ®s->mib.tx_multiple_cols);
(void) R_REG(ch->osh, ®s->mib.tx_excessive_cols);
(void) R_REG(ch->osh, ®s->mib.tx_late_cols);
(void) R_REG(ch->osh, ®s->mib.tx_defered);
(void) R_REG(ch->osh, ®s->mib.tx_carrier_lost);
(void) R_REG(ch->osh, ®s->mib.tx_pause_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_broadcast_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_multicast_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_len_64);
(void) R_REG(ch->osh, ®s->mib.rx_len_65_to_127);
(void) R_REG(ch->osh, ®s->mib.rx_len_128_to_255);
(void) R_REG(ch->osh, ®s->mib.rx_len_256_to_511);
(void) R_REG(ch->osh, ®s->mib.rx_len_512_to_1023);
(void) R_REG(ch->osh, ®s->mib.rx_len_1024_to_max);
(void) R_REG(ch->osh, ®s->mib.rx_jabber_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_oversize_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_fragment_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_missed_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_crc_align_errs);
(void) R_REG(ch->osh, ®s->mib.rx_undersize);
(void) R_REG(ch->osh, ®s->mib.rx_crc_errs);
(void) R_REG(ch->osh, ®s->mib.rx_align_errs);
(void) R_REG(ch->osh, ®s->mib.rx_symbol_errs);
(void) R_REG(ch->osh, ®s->mib.rx_pause_pkts);
(void) R_REG(ch->osh, ®s->mib.rx_nonpause_pkts);
ch->mibgood = TRUE;
/*
* We want the phy registers to be accessible even when
* the driver is "downed" so initialize MDC preamble, frequency,
* and whether internal or external phy here.
*/
/* default: 100Mhz SI clock and external phy */
W_REG(ch->osh, ®s->mdiocontrol, 0x94);
if (ch->etc->deviceid == BCM47XX_ENET_ID) {
/* 47xx chips: find out the clock */
if ((clk = si_clock(ch->sih)) != 0) {
mdc = 0x80 | ((clk + (MDC_RATIO / 2)) / MDC_RATIO);
W_REG(ch->osh, ®s->mdiocontrol, mdc);
} else {
ET_ERROR(("et%d: chipreset: Could not figure out backplane clock, "
"using 100Mhz\n",
ch->etc->unit));
}
}
/* some chips have internal phy, some don't */
if (!(R_REG(ch->osh, ®s->devcontrol) & DC_IP)) {
W_REG(ch->osh, ®s->enetcontrol, EC_EP);
} else if (R_REG(ch->osh, ®s->devcontrol) & DC_ER) {
AND_REG(ch->osh, ®s->devcontrol, ~DC_ER);
OSL_DELAY(100);
chipphyinit(ch, ch->etc->phyaddr);
}
/* clear persistent sw intstatus */
ch->intstatus = 0;
}