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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=EoPiaycA c=1 sm=1 tr=0 ts=69fc52a2 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=ZsC4DHZuhs/kKio7QBcDoQ==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=fdbe8OLCKT6xAC55-esA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-ORIG-GUID: qP7vd05pw9u6-oS_VQxkOoWELtp9TVQs X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTA3MDA4NyBTYWx0ZWRfX4TYp0/0Y+mnt EwxzT/nSZ+c0WtwWB3Dq6zH9r+9PM3/fwi/ZKqaWeqlrvlznHwsync7HnAWu2cN9b5O/LkRlAKE pnVDla00xF5h2lT5EjD+sjfzqXvZmLkJSJaH/2EVORxJ+vAdyRTJAdSRIkCUVV0S2JahEySbZ1V I0SszIq4N3PKTcF8OmuCO7dv8qQEjtNkZUD0Zyac+df/J+iPRSl+MG7KXou6uwoivgf+eo7K+Xu 9+WAsCmZaX51pf44eyArrEwZTWRmESk3uJ5In+qjXz2BVFon/kWf92pmxw9pxbu+/RD2bp85YzW Yoto2ZUY8LwNShrb/17RzSOPh3wUnN71dVDvQSHybKWBV+5RP4Ao/80m+a8lsFs8AKNmmGArNk9 WbHRi8Jz5BjE/7q0gLO/rCAW1iRS9jTkQKDgSjZV+YE+Rb0DtQJlkkEIS2IHCi1Oj3uMGKSAO5p DnMWr4hi+oreeMVC8Rg== X-Proofpoint-GUID: qP7vd05pw9u6-oS_VQxkOoWELtp9TVQs X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-06_02,2026-05-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 malwarescore=0 priorityscore=1501 clxscore=1015 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605070087 On 5/6/26 8:33 PM, Val Packett wrote: > Add support for TDM RX DAIs which are used on some devices to send audio > data to speaker amplifiers. Channels are assigned based on the codec > DAI names for a quad-speaker setup such as on the xiaomi-pipa tablet. > > Signed-off-by: Val Packett > --- > sound/soc/qcom/sm8250.c | 141 ++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 141 insertions(+) > > diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c > index a675913da943..b64fd3970ba1 100644 > --- a/sound/soc/qcom/sm8250.c > +++ b/sound/soc/qcom/sm8250.c > @@ -17,6 +17,10 @@ > #include "sdw.h" > > #define MI2S_BCLK_RATE 1536000 > +#define TDM_BCLK_RATE 6144000 > +#define NUM_TDM_SLOTS 8 > + > +static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28}; static const ? > > struct sm8250_snd_data { > bool stream_prepared[AFE_PORT_MAX]; > @@ -55,6 +59,89 @@ static void sm8250_snd_exit(struct snd_soc_pcm_runtime *rtd) > > } > > +static int sm8250_tdm_snd_hw_params(struct snd_pcm_substream *substream, > + struct snd_pcm_hw_params *params) > +{ > + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); > + struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); > + struct snd_soc_dai *codec_dai; > + unsigned int rx_mask; > + int ret = 0, j; > + int channels, slot_width; > + > + switch (params_format(params)) { > + case SNDRV_PCM_FORMAT_S16_LE: > + slot_width = 16; > + break; Any reason only S16? > + default: > + dev_err(rtd->dev, "%s: invalid param format 0x%x\n", > + __func__, params_format(params)); > + return -EINVAL; > + } > + > + channels = params_channels(params); > + > + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { > + ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3, Please define the magic constants like 0x3 here. > + 8, slot_width); > + if (ret < 0) { > + dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n", > + __func__, ret); > + goto end; > + } > + > + ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL, > + channels, tdm_slot_offset); > + if (ret < 0) { > + dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n", > + __func__, ret); > + goto end; > + } > + } else { > + ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0, > + 8, slot_width); > + if (ret < 0) { > + dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n", > + __func__, ret); > + goto end; > + } > + > + ret = snd_soc_dai_set_channel_map(cpu_dai, channels, > + tdm_slot_offset, 0, NULL); > + if (ret < 0) { > + dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n", > + __func__, ret); > + goto end; > + } > + } > + > + for_each_rtd_codec_dais(rtd, j, codec_dai) { > + if (strstr(codec_dai->component->name_prefix, "PL")) { name prefix can be null. > + rx_mask = BIT(0); > + } else if (strstr(codec_dai->component->name_prefix, "PR")) { name prefix comparision is fragile design, this will break very soon. and this is not a binding too. This also raises question about the using this generic driver for such specific combination. Can these be made specific to compatible ? > + rx_mask = BIT(1); > + } else if (strstr(codec_dai->component->name_prefix, "SL")) { > + rx_mask = BIT(2); > + } else if (strstr(codec_dai->component->name_prefix, "SR")) { > + rx_mask = BIT(3); > + } else { > + rx_mask = 0; > + dev_warn(rtd->dev, "%s: codec DAI name '%s' not recognized\n", > + __func__, codec_dai->component->name_prefix); > + } > + ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, rx_mask, > + NUM_TDM_SLOTS, slot_width); > + if (ret < 0) { Can we handle -ENOSUPP? > + dev_err(rtd->dev, "%s: failed to set TDM slot, err:%d\n", > + __func__, ret); > + goto end; > + } > + } > + > +end: > + return ret; > +} > + > static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, > struct snd_pcm_hw_params *params) > { > @@ -120,6 +207,41 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream) > snd_soc_dai_set_fmt(cpu_dai, fmt); > snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > break; > + case PRIMARY_TDM_RX_0: > + codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B; > + snd_soc_dai_set_sysclk(cpu_dai, > + Q6AFE_LPASS_CLK_ID_PRI_TDM_IBIT, > + TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); > + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > + break; > + case SECONDARY_TDM_RX_0: > + codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B; > + snd_soc_dai_set_sysclk(cpu_dai, > + Q6AFE_LPASS_CLK_ID_SEC_TDM_IBIT, > + TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); > + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > + break; > + case TERTIARY_TDM_RX_0: > + codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B; > + snd_soc_dai_set_sysclk(cpu_dai, > + Q6AFE_LPASS_CLK_ID_TER_TDM_IBIT, > + TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); > + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > + break; > + case QUATERNARY_TDM_RX_0: > + codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B; > + snd_soc_dai_set_sysclk(cpu_dai, > + Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT, > + TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); > + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > + break; > + case QUINARY_TDM_RX_0: > + codec_dai_fmt |= SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_DSP_B; > + snd_soc_dai_set_sysclk(cpu_dai, > + Q6AFE_LPASS_CLK_ID_QUIN_TDM_IBIT, > + TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); > + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); > + break; > default: > break; > } > @@ -145,10 +267,29 @@ static int sm8250_snd_hw_free(struct snd_pcm_substream *substream) > return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]); > } > > +static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, > + struct snd_pcm_hw_params *params) > +{ > + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); > + struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); > + int ret = 0; > + > + switch (cpu_dai->id) { > + case PRIMARY_TDM_RX_0...QUINARY_TDM_TX_7: > + ret = sm8250_tdm_snd_hw_params(substream, params); > + break; > + default: > + break; > + } > + > + return ret; > +} > + > static const struct snd_soc_ops sm8250_be_ops = { > .startup = sm8250_snd_startup, > .shutdown = qcom_snd_sdw_shutdown, > .hw_free = sm8250_snd_hw_free, > + .hw_params = sm8250_snd_hw_params, > .prepare = sm8250_snd_prepare, > }; >