Messages in this thread | | | Subject | Re: [PATCH] ASoC: pcm512x: Add support for data formats RJ and LJ | From | Peter Ujfalusi <> | Date | Tue, 10 Nov 2020 08:59:50 +0200 |
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On 09/11/2020 23.21, Kirill Marinushkin wrote: > Currently, pcm512x driver supports only I2S data format. > This commit adds RJ and LJ as well. > > I don't expect regression WRT existing sound cards, because: > > * default value in corresponding register of pcm512x codec is 0 == I2S > * existing in-tree sound cards with pcm512x codec are configured for I2S > * i don't see how existing off-tree sound cards with pcm512x codec could be > configured differently - it would not work > * tested explicitly, that there is no regression with Raspberry Pi + > sound card `sound/soc/bcm/hifiberry_dacplus.c` > > Signed-off-by: Kirill Marinushkin <kmarinushkin@birdec.com> > Cc: Mark Brown <broonie@kernel.org> > Cc: Takashi Iwai <tiwai@suse.com> > Cc: Liam Girdwood <lgirdwood@gmail.com> > Cc: Matthias Reichl <hias@horus.com> > Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> > Cc: alsa-devel@alsa-project.org > Cc: linux-kernel@vger.kernel.org > --- > sound/soc/codecs/pcm512x.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c > index 8153d3d01654..c6e975fb4a43 100644 > --- a/sound/soc/codecs/pcm512x.c > +++ b/sound/soc/codecs/pcm512x.c > @@ -1167,6 +1167,7 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream, > struct snd_soc_component *component = dai->component; > struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component); > int alen; > + int afmt; > int gpio; > int clock_output; > int master_mode; > @@ -1195,6 +1196,22 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream, > return -EINVAL; > } > > + switch (pcm512x->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { > + case SND_SOC_DAIFMT_I2S: > + afmt = PCM512x_AFMT_I2S; > + break; > + case SND_SOC_DAIFMT_RIGHT_J: > + afmt = PCM512x_AFMT_RTJ; > + break; > + case SND_SOC_DAIFMT_LEFT_J: > + afmt = PCM512x_AFMT_LTJ; > + break; > + default: > + dev_err(component->dev, "unsupported DAI format: 0x%x\n", > + pcm512x->fmt); > + return -EINVAL; > + } > +
The bus format and
> switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
> case SND_SOC_DAIFMT_CBS_CFS: > ret = regmap_update_bits(pcm512x->regmap,
the clock generation role should be set in pcm512x_set_fmt(), in that way you can deny specific setups earlier.
I would also add DSP_A and DSP_B modes at the same time, DSP_A would need a write of 1 to register 41 (PCM512x_I2S_2, offset = 1), other formats should set the offset to 0.
> @@ -1236,6 +1253,13 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream, > return ret; > } > > + ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1, > + PCM512x_AFMT, afmt); > + if (ret != 0) { > + dev_err(component->dev, "Failed to set data format: %d\n", ret); > + return ret; > + } > + > if (pcm512x->pll_out) { > ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11); > if (ret != 0) { >
- Péter
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