Add qcom TDM setup function to support TDM ports for qcom platform.
Signed-off-by: Jianhua Lu lujianhua000@gmail.com --- Changes in v2: 1. remove EXPORT_SYMBOL_GPL 2. remove static modifier
sound/soc/qcom/sdw.c | 63 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+)
diff --git a/sound/soc/qcom/sdw.c b/sound/soc/qcom/sdw.c index 77dbe0c28b29..948abbd2e0e3 100644 --- a/sound/soc/qcom/sdw.c +++ b/sound/soc/qcom/sdw.c @@ -4,6 +4,7 @@
#include <dt-bindings/sound/qcom,q6afe.h> #include <linux/module.h> +#include <sound/pcm_params.h> #include <sound/soc.h> #include "sdw.h"
@@ -101,6 +102,65 @@ int qcom_snd_sdw_prepare(struct snd_pcm_substream *substream, } EXPORT_SYMBOL_GPL(qcom_snd_sdw_prepare);
+int qcom_snd_tdm_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); + unsigned int tdm_slot_offset[8] = { 0, 4, 8, 12, 16, 20, 24, 28 }; + int channels, slot_width; + int ret; + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + slot_width = 16; + break; + case SNDRV_PCM_FORMAT_S24_LE: + slot_width = 24; + break; + case SNDRV_PCM_FORMAT_S32_LE: + slot_width = 32; + break; + 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, 8, slot_width); + if (ret < 0) { + dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n", + __func__, ret); + return ret; + } + + 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); + return ret; + } + } 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); + return ret; + } + + 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); + return ret; + } + } +} + int qcom_snd_sdw_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct sdw_stream_runtime **psruntime) @@ -125,6 +185,9 @@ int qcom_snd_sdw_hw_params(struct snd_pcm_substream *substream, *psruntime = sruntime; } break; + case PRIMARY_TDM_RX_0...QUINARY_TDM_TX_7: + qcom_snd_tdm_hw_params(substream, params); + break; }
return 0;