static void mcasp_start_tx(struct davinci_audio_dev *dev)
{
u8 offset = 0, i;
u32 cnt;
mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST);
mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST);
mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXSERCLR);
mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0);
mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXSMRST);
mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXFSRST);
mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0);
for (i = 0; i < dev->num_serializer; i++) {
if (dev->serial_dir[i] == TX_MODE) {
offset = i;
break;
}
}
/* wait for TX ready */
cnt = 0;
while (!(mcasp_get_reg(dev->base + DAVINCI_MCASP_XRSRCTL_REG(offset)) &
TXSTATE) && (cnt < 100000))
cnt++;
mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0);
}
static void davinci_hw_common_param(struct davinci_audio_dev *dev, int stream)
{
int i;
u8 tx_ser = 0;
u8 rx_ser = 0;
/* Default configuration */
mcasp_set_bits(dev->base + DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT);
/* All PINS as McASP */
mcasp_set_reg(dev->base + DAVINCI_MCASP_PFUNC_REG, 0x00000000);
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
mcasp_set_reg(dev->base + DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF);
mcasp_clr_bits(dev->base + DAVINCI_MCASP_XEVTCTL_REG,
TXDATADMADIS);
} else {
mcasp_set_reg(dev->base + DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF);
mcasp_clr_bits(dev->base + DAVINCI_MCASP_REVTCTL_REG,
RXDATADMADIS);
}
for (i = 0; i < dev->num_serializer; i++) {
mcasp_set_bits(dev->base + DAVINCI_MCASP_XRSRCTL_REG(i),
dev->serial_dir[i]);
if (dev->serial_dir[i] == TX_MODE) {
mcasp_set_bits(dev->base + DAVINCI_MCASP_PDIR_REG,
AXR(i));
tx_ser++;
} else if (dev->serial_dir[i] == RX_MODE) {
mcasp_clr_bits(dev->base + DAVINCI_MCASP_PDIR_REG,
AXR(i));
rx_ser++;
}
}
if (dev->txnumevt && stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (dev->txnumevt * tx_ser > 64)
dev->txnumevt = 1;
mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, tx_ser,
NUMDMA_MASK);
mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
((dev->txnumevt * tx_ser) << 8), NUMEVT_MASK);
mcasp_set_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE);
}
if (dev->rxnumevt && stream == SNDRV_PCM_STREAM_CAPTURE) {
if (dev->rxnumevt * rx_ser > 64)
dev->rxnumevt = 1;
mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, rx_ser,
NUMDMA_MASK);
mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
((dev->rxnumevt * rx_ser) << 8), NUMEVT_MASK);
mcasp_set_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE);
}
}
static int davinci_mcasp_suspend(struct platform_device *pdev,
pm_message_t state)
{
int ret = 0, idx;
struct davinci_audio_dev *dev = dev_get_drvdata(&pdev->dev);
if (dev->version == MCASP_VERSION_3) {
dev->gblctlx = mcasp_get_reg(dev->base +
DAVINCI_MCASP_GBLCTLX_REG);
dev->txmask = mcasp_get_reg(dev->base +
DAVINCI_MCASP_TXMASK_REG);
dev->txfmt = mcasp_get_reg(dev->base + DAVINCI_MCASP_TXFMT_REG);
dev->txfmctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_TXFMCTL_REG);
dev->aclkxctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_ACLKXCTL_REG);
dev->ahclkxctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_AHCLKXCTL_REG);
dev->txtdm = mcasp_get_reg(dev->base + DAVINCI_MCASP_TXTDM_REG);
dev->wfifoctl = mcasp_get_reg(dev->base + MCASP_VER3_WFIFOCTL);
dev->gblctlr = mcasp_get_reg(dev->base +
DAVINCI_MCASP_GBLCTLR_REG);
dev->rxmask = mcasp_get_reg(dev->base +
DAVINCI_MCASP_RXMASK_REG);
dev->rxfmt = mcasp_get_reg(dev->base + DAVINCI_MCASP_RXFMT_REG);
dev->rxfmctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_RXFMCTL_REG);
dev->aclkrctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_ACLKRCTL_REG);
dev->ahclkrctl = mcasp_get_reg(dev->base +
DAVINCI_MCASP_AHCLKRCTL_REG);
dev->rxtdm = mcasp_get_reg(dev->base + DAVINCI_MCASP_RXTDM_REG);
dev->rfifoctl = mcasp_get_reg(dev->base + MCASP_VER3_RFIFOCTL);
for (idx = 0; idx < dev->num_serializer; idx++) {
dev->xrsrctl[idx] = mcasp_get_reg(dev->base +
DAVINCI_MCASP_XRSRCTL_REG(idx));
}
dev->pfunc = mcasp_get_reg(dev->base + DAVINCI_MCASP_PFUNC_REG);
dev->pdir = mcasp_get_reg(dev->base + DAVINCI_MCASP_PDIR_REG);
}
ret = pm_runtime_put_sync(&pdev->dev);
if (ret < 0)
dev_err(&pdev->dev, "failed to get runtime pm\n");
/* only values < 0 indicate errors */
return IS_ERR_VALUE(ret) ? ret : 0;
}
