Peter Ujfalusi wrote:
> On Wednesday 10 June 2009 13:27:38 ext Janusz Krzysztofik wrote:
>> Not only this. AFAICS, there is no way of specifying single phase stereo
>> (with XPHASE/RPHASE unset), 2 words per frame (XFRLEN1/RFRLEN1(2 - 1)).
>> Isn't this required for correct DSP_A/DSP_B support?
>
> Sure it is possible:
> format = mcbsp_data->fmt & SND_SOC_DAIFMT_FORMAT_MASK;
> wpf = channels = params_channels(params);
> switch (channels) {
> case 2:
> if (format == SND_SOC_DAIFMT_I2S) {
> /* Use dual-phase frames */
> regs->rcr2 |= RPHASE;
> regs->xcr2 |= XPHASE;
> /* Set 1 word per (McBSP) frame for phase1 and phase2 */
> wpf--;
> regs->rcr2 |= RFRLEN2(wpf - 1);
> regs->xcr2 |= XFRLEN2(wpf - 1);
> }
> case 1:
> case 4:
> /* Set word per (McBSP) frame for phase1 */
> regs->rcr1 |= RFRLEN1(wpf - 1);
> regs->xcr1 |= XFRLEN1(wpf - 1);
> break;
> default:
> /* Unsupported number of channels */
> return -EINVAL;
> }
>
> wpf = channels == 2, format is not I2S --> RFRLEN1(wpf - 1), XFRLEN1(wpf - 1),
> RFRLEN1(2 - 1), XFRLEN1(2 - 1)
OK, I see I have to update my base before commenting the code ;).
Thanks,
Janusz
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