On 4/23/19 9:13 AM, Takashi Iwai wrote:
This is an implementation of a machine driver needed for Conexant
CX2072X codec on Intel Baytrail and Cherrytrail platforms. The
current patch is based on the initial work by Pierre-Louis Bossart and
the other Intel machine drivers.
The jack detection support (driven via the standard GPIO) was added on
top of the original work.
No SOF support yet, so the corresponding entries are commented out.
SOF support is trivial to add, can we help you here?
+config SND_SOC_INTEL_BYT_CHT_CX2072X_MACH
+ tristate "Baytrail & Cherrytrail with CX2072X codec"
+ depends on X86_INTEL_LPSS && I2C && ACPI
Didn't Mark recently split this in two, with X86_INTEL_LPSS || COMPILE_TEST?
+static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_interval *rate =
+ hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ struct snd_interval *channels =
+ hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ int ret;
+
+ /* The DSP will covert the FE rate to 48k, stereo, 24bits */
+ rate->min = rate->max = 48000;
+ channels->min = channels->max = 2;
+
+ /* set SSP2 to 24-bit */
+ params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
+
+ /*
+ * Default mode for SSP configuration is TDM 4 slot, override config
+ * with explicit setting to I2S 2ch 24-bit. The word length is set with
+ * dai_set_tdm_slot() since there is no other API exposed
+ */
+ ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
+ SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0) {
+ dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
+ if (ret < 0) {
+ dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
+ return ret;
+ }
+
+ snd_soc_dai_set_bclk_ratio(rtd->codec_dai, 50);
that part would be problematic for SOF. IIRC we put all clock-related
stuff in the init, and ignore the fixups to use topology-based
information instead. If this call to _set_bclk_ratio can be moved to the
init it's more future-proof. Is there a reason to do this here in the fixup?
+static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
+ [MERR_DPCM_AUDIO] = {
+ .name = "Audio Port",
+ .stream_name = "Audio",
+ .cpu_dai_name = "media-cpu-dai",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .codec_name = "snd-soc-dummy",
+ .platform_name = "sst-mfld-platform",
+ .nonatomic = true,
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ .ops = &byt_cht_cx2072x_aif1_ops,
+ },
+ [MERR_DPCM_DEEP_BUFFER] = {
+ .name = "Deep-Buffer Audio Port",
+ .stream_name = "Deep-Buffer Audio",
+ .cpu_dai_name = "deepbuffer-cpu-dai",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .codec_name = "snd-soc-dummy",
+ .platform_name = "sst-mfld-platform",
+ .nonatomic = true,
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ .ops = &byt_cht_cx2072x_aif1_ops,
+ },
+ /* back ends */
+ {
+ .name = "SSP2-Codec",
+ .id = 1,
+ .cpu_dai_name = "ssp2-port",
+ .platform_name = "sst-mfld-platform",
+ .no_pcm = 1,
+ .codec_dai_name = "cx2072x-hifi",
+ .codec_name = "i2c-14F10720:00",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS,
+ .init = byt_cht_cx2072x_init,
+ .be_hw_params_fixup = byt_cht_cx2072x_fixup,
+ .nonatomic = true,
I can't recall if this .atomic is needed or not for back-ends.
+ {
+ .id = "14F10720",
+ .drv_name = "bytcht_cx2072x",
+ .fw_filename = "intel/fw_sst_0f28.bin",
+ .board = "bytcht_cx2072x",
+ /* .sof_fw_filename = "sof-byt.ri", */
+ /* .sof_tplg_filename = "sof-byt-cx2072x.tplg", */
+ },
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH)
/*
* This is always last in the table so that it is selected only when
diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
index deafd87cc764..69ecbb88c171 100644
--- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c
+++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
@@ -169,6 +169,14 @@ struct snd_soc_acpi_mach snd_soc_acpi_intel_cherrytrail_machines[] = {
.sof_fw_filename = "sof-cht.ri",
.sof_tplg_filename = "sof-cht-rt5651.tplg",
},
+ {
+ .id = "14F10720",
+ .drv_name = "bytcht_cx2072x",
+ .fw_filename = "intel/fw_sst_22a8.bin",
+ .board = "bytcht_cx2072x",
+ /* .sof_fw_filename = "sof-cht.ri", */
+ /* .sof_tplg_filename = "sof-cht-cx2072x.tplg", */
+ },
I'd uncomment those two ACPI machine parts. There is not risk unless SOF
is actually enabled.
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