/*
* Should only be called when port is inactive (i.e. SSIEN = 0),
* although can be called multiple times by upper layers.
*/
static int imx_ssi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
struct imx_ssi *priv = (struct imx_ssi *)cpu_dai->private_data;
void __iomem *ioaddr = priv->ioaddr;
int id;
id = cpu_dai->id;
/* Tx/Rx config */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/* cant change any parameters when SSI is running */
if ((__raw_readl(ioaddr + SSI_SCR) & SSI_SCR_SSIEN) &&
(__raw_readl(ioaddr + SSI_SCR) & SSI_SCR_TE))
return 0;
return imx_ssi_hw_tx_params(substream, params, cpu_dai);
} else {
/* cant change any parameters when SSI is running */
if ((__raw_readl(ioaddr + SSI_SCR) & SSI_SCR_SSIEN) &&
(__raw_readl(ioaddr + SSI_SCR) & SSI_SCR_RE))
return 0;
return imx_ssi_hw_rx_params(substream, params, cpu_dai);
}
}
/*
* Should only be called when port is inactive (i.e. SSIEN = 0),
* although can be called multiple times by upper layers.
*/
static int imx_ssi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_link *pcm_link = substream->private_data;
struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
int id;
id = cpu_dai->id;
/* Tx/Rx config */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/* cant change any parameters when SSI is running */
if (id == IMX_DAI_SSI0 || id == IMX_DAI_SSI1) {
if ((SSI1_SCR & SSI_SCR_SSIEN) &&
(SSI1_SCR & SSI_SCR_TE))
return 0;
} else {
if ((SSI2_SCR & SSI_SCR_SSIEN) &&
(SSI2_SCR & SSI_SCR_TE))
return 0;
}
return imx_ssi_hw_tx_params(substream, params);
} else {
/* cant change any parameters when SSI is running */
if (id == IMX_DAI_SSI0 || id == IMX_DAI_SSI1) {
if ((SSI1_SCR & SSI_SCR_SSIEN) &&
(SSI1_SCR & SSI_SCR_RE))
return 0;
} else {
if ((SSI2_SCR & SSI_SCR_SSIEN) &&
(SSI2_SCR & SSI_SCR_RE))
return 0;
}
return imx_ssi_hw_rx_params(substream, params);
}
}