From: Brent Lu brent.lu@intel.com
Rewrite max_98373_hw_params() function to get tdm slot number from topology in runtime because earlier platforms use 4-slot setting instead of 8. Also check if the interface is configured in TDM mode before calling snd_soc_dai_set_tdm_slot() function.
Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Brent Lu brent.lu@intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/intel/boards/sof_maxim_common.c | 84 +++++++++++++++++++---- 1 file changed, 72 insertions(+), 12 deletions(-)
diff --git a/sound/soc/intel/boards/sof_maxim_common.c b/sound/soc/intel/boards/sof_maxim_common.c index 6c40ecc04723..f965b172fa36 100644 --- a/sound/soc/intel/boards/sof_maxim_common.c +++ b/sound/soc/intel/boards/sof_maxim_common.c @@ -9,6 +9,7 @@ #include <sound/soc-acpi.h> #include <sound/soc-dai.h> #include <sound/soc-dapm.h> +#include <sound/sof.h> #include <uapi/sound/asound.h> #include "../common/soc-intel-quirks.h" #include "sof_maxim_common.h" @@ -72,26 +73,85 @@ static struct snd_soc_dai_link_component max_98373_components[] = { }, };
+/* + * According to the definition of 'DAI Sel Mux' mixer in max98373.c, rx mask + * should choose two channels from TDM slots, the LSB of rx mask is left channel + * and the other one is right channel. + * + * For tx mask, each codec requires two channels: one for V-sense and the other + * one for I-sense. Must match the device property "maxim,vmon-slot-no" and + * "maxim,imon-slot-no" in ACPI table. + */ +static const struct { + unsigned int tx; + unsigned int rx; +} max_98373_tdm_mask[] = { + {.tx = 0x03, .rx = 0x3}, + {.tx = 0x0c, .rx = 0x3}, +}; + static int max_98373_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_link *dai_link = rtd->dai_link; struct snd_soc_dai *codec_dai; + int i; + int tdm_slots; int ret = 0; - int j;
- for_each_rtd_codec_dais(rtd, j, codec_dai) { - if (!strcmp(codec_dai->component->name, MAX_98373_DEV0_NAME)) { - /* DEV0 tdm slot configuration */ - ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x03, 3, 8, 32); - } else if (!strcmp(codec_dai->component->name, MAX_98373_DEV1_NAME)) { - /* DEV1 tdm slot configuration */ - ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x0C, 3, 8, 32); + for_each_rtd_codec_dais(rtd, i, codec_dai) { + if (i >= ARRAY_SIZE(max_98373_tdm_mask)) { + dev_err(codec_dai->dev, "only 2 amps are supported\n"); + return -EINVAL; } - if (ret < 0) { - dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n", - ret); - return ret; + + switch (dai_link->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_A: + case SND_SOC_DAIFMT_DSP_B: + /* get the tplg configured tdm slot number */ + tdm_slots = sof_dai_get_tdm_slots(rtd); + if (tdm_slots <= 0) { + dev_err(rtd->dev, "invalid tdm slots %d\n", + tdm_slots); + return -EINVAL; + } + + /* + * check if tdm slot number is too small for channel + * allocation + */ + if (fls(max_98373_tdm_mask[i].tx) > tdm_slots) { + dev_err(codec_dai->dev, "slot mismatch, tx %d slots %d\n", + fls(max_98373_tdm_mask[i].tx), tdm_slots); + return -EINVAL; + } + + if (fls(max_98373_tdm_mask[i].rx) > tdm_slots) { + dev_err(codec_dai->dev, "slot mismatch, rx %d slots %d\n", + fls(max_98373_tdm_mask[i].rx), tdm_slots); + return -EINVAL; + } + + dev_dbg(codec_dai->dev, "set tdm slot: tx 0x%x rx 0x%x slots %d width %d\n", + max_98373_tdm_mask[i].tx, + max_98373_tdm_mask[i].rx, + tdm_slots, params_width(params)); + + ret = snd_soc_dai_set_tdm_slot(codec_dai, + max_98373_tdm_mask[i].tx, + max_98373_tdm_mask[i].rx, + tdm_slots, + params_width(params)); + if (ret < 0) { + dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n", + ret); + return ret; + } + break; + default: + dev_dbg(codec_dai->dev, "codec is in I2S mode\n"); + break; } } return 0;