@@ -364,6 +364,17 @@ config SND_SOC_IMX_CARD
with OF-graph DT bindings.
It also support DPCM of single CPU multi Codec ststem.
+config SND_SOC_SMM2_CARD
+ tristate "SoC Audio Card for SMM2 pro BSH device"
+ depends on OF && I2C
+ select SND_SOC_FSL_EASRC
+ select SND_SOC_TLV320AIC31XX
+ select SND_SOC_IMX_PCM_DMA
+ select SND_SOC_FSL_SAI
+ select SND_SIMPLE_CARD_UTILS
+ help
+ This option enables audio sound card support for BSH SMM2 Pro
+
endif # SND_IMX_SOC
endmenu
@@ -72,6 +72,7 @@ snd-soc-imx-audmix-objs := imx-audmix.o
snd-soc-imx-hdmi-objs := imx-hdmi.o
snd-soc-imx-rpmsg-objs := imx-rpmsg.o
snd-soc-imx-card-objs := imx-card.o
+snd-soc-smm-tlv320aic31xx-objs := smm-tlv320aic31xx.o
obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
@@ -81,3 +82,4 @@ obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
obj-$(CONFIG_SND_SOC_IMX_RPMSG) += snd-soc-imx-rpmsg.o
obj-$(CONFIG_SND_SOC_IMX_CARD) += snd-soc-imx-card.o
+obj-$(CONFIG_SND_SOC_SMM2_CARD) += snd-soc-smm-tlv320aic31xx.o
new file mode 100644
@@ -0,0 +1,308 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// BSH smm2-pro audio card
+//
+// Copyright (C) 2021 BSH Hausgeraete GmbH
+//
+// Author: Michael Trimarchi <michael@amarulasolutions.com>
+
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/simple_card_utils.h>
+
+#include "fsl_sai.h"
+#include "../codecs/tlv320aic31xx.h"
+
+/**
+ * struct smm_card_priv - Freescale Generic ASOC card private data
+ * @dai_link: DAI link structure including normal one and DPCM link
+ * @pdev: platform device pointer
+ * @card: ASoC card structure
+ * @sample_rate: Current sample rate
+ * @sample_format: Current sample format
+ * @asrc_rate: ASRC sample rate used by Back-Ends
+ * @asrc_format: ASRC sample format used by Back-Ends
+ * @dai_fmt: DAI format between CPU and CODEC
+ * @name: Card name
+ */
+
+struct smm_card_priv {
+ struct snd_soc_dai_link dai_link[2];
+ struct platform_device *pdev;
+ struct snd_soc_card card;
+ u32 sample_rate;
+ snd_pcm_format_t sample_format;
+ u32 asrc_rate;
+ snd_pcm_format_t asrc_format;
+ u32 dai_fmt;
+ char name[32];
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ /* 1st half -- Normal DAPM routes */
+ {"Playback", NULL, "CPU-Playback"},
+ /* 2nd half -- ASRC DAPM routes */
+ {"CPU-Playback", NULL, "ASRC-Playback"},
+};
+
+/* Add all possible widgets into here without being redundant */
+static const struct snd_soc_dapm_widget smm_card_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static int smm_card_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct smm_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct device *dev = rtd->card->dev;
+ int ret;
+
+ priv->sample_rate = params_rate(params);
+ priv->sample_format = params_format(params);
+
+ ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 32);
+ if (ret && ret != -ENOTSUPP) {
+ dev_err(dev, "failed to set TDM slot for cpu dai\n");
+ goto fail;
+ }
+
+ ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), AIC31XX_PLL_CLKIN_BCKL,
+ priv->sample_rate * 256, SND_SOC_CLOCK_IN);
+ if (ret && ret != -ENOTSUPP) {
+ dev_err(dev, "failed to set SYSCLK: %d\n", ret);
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ return ret;
+}
+
+static const struct snd_soc_ops smm_card_ops = {
+ .hw_params = smm_card_hw_params,
+};
+
+static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ struct smm_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct snd_interval *rate;
+ struct snd_mask *mask;
+
+ rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ rate->max = rate->min = priv->asrc_rate;
+
+ mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ snd_mask_none(mask);
+ snd_mask_set_format(mask, priv->asrc_format);
+
+ return 0;
+}
+
+SND_SOC_DAILINK_DEFS(hifi_fe,
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_DUMMY()),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(hifi_be,
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_DUMMY()));
+
+static struct snd_soc_dai_link smm_card_dai[] = {
+ /* DPCM Link between Front-End and Back-End */
+ {
+ .name = "HiFi-ASRC-FE",
+ .stream_name = "HiFi-ASRC-FE",
+ .dpcm_playback = 1,
+ .dpcm_capture = 0,
+ .dynamic = 1,
+ SND_SOC_DAILINK_REG(hifi_fe),
+ },
+ {
+ .name = "HiFi-ASRC-BE",
+ .stream_name = "HiFi-ASRC-BE",
+ .be_hw_params_fixup = be_hw_params_fixup,
+ .ops = &smm_card_ops,
+ .dpcm_playback = 1,
+ .dpcm_capture = 0,
+ .no_pcm = 1,
+ SND_SOC_DAILINK_REG(hifi_be),
+ },
+};
+
+static int smm_card_probe(struct platform_device *pdev)
+{
+ struct device_node *cpu_np, *codec_np, *asrc_np;
+ struct device_node *np = pdev->dev.of_node;
+ struct platform_device *asrc_pdev = NULL;
+ struct platform_device *cpu_pdev;
+ struct smm_card_priv *priv;
+ struct device *codec_dev = NULL;
+ const char *codec_dai_name;
+ const char *codec_dev_name;
+ u32 width;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ cpu_np = of_parse_phandle(np, "audio-cpu", 0);
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ cpu_pdev = of_find_device_by_node(cpu_np);
+ if (!cpu_pdev) {
+ dev_err(&pdev->dev, "failed to find CPU DAI device\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+ if (codec_np) {
+ struct platform_device *codec_pdev;
+ struct i2c_client *codec_i2c;
+
+ codec_i2c = of_find_i2c_device_by_node(codec_np);
+ if (codec_i2c) {
+ codec_dev = &codec_i2c->dev;
+ codec_dev_name = codec_i2c->name;
+ }
+ if (!codec_dev) {
+ codec_pdev = of_find_device_by_node(codec_np);
+ if (codec_pdev) {
+ codec_dev = &codec_pdev->dev;
+ codec_dev_name = codec_pdev->name;
+ }
+ }
+ }
+
+ asrc_np = of_parse_phandle(np, "audio-asrc", 0);
+ if (asrc_np)
+ asrc_pdev = of_find_device_by_node(asrc_np);
+
+ if (!asrc_pdev) {
+ dev_err(&pdev->dev, "Unable to register the ASRC DAI device\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* Default sample rate and format, will be updated in hw_params() */
+ priv->sample_rate = 48000;
+ priv->sample_format = SNDRV_PCM_FORMAT_S32_LE;
+ priv->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
+
+ memcpy(priv->dai_link, smm_card_dai,
+ sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
+
+ codec_dai_name = "tlv320dac31xx-hifi";
+ priv->card.dapm_routes = audio_map;
+ priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
+
+ /* Initialize sound card */
+ priv->pdev = pdev;
+ priv->card.dev = &pdev->dev;
+ priv->card.owner = THIS_MODULE;
+ ret = snd_soc_of_parse_card_name(&priv->card, "model");
+ if (ret) {
+ snprintf(priv->name, sizeof(priv->name), "%s-audio", codec_dev_name);
+ priv->card.name = priv->name;
+ }
+ priv->card.dai_link = priv->dai_link;
+ priv->card.dapm_widgets = smm_card_dapm_widgets;
+ priv->card.num_dapm_widgets = ARRAY_SIZE(smm_card_dapm_widgets);
+
+ if (of_property_read_bool(np, "audio-routing")) {
+ ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
+ goto asrc_fail;
+ }
+ }
+
+ /* DPCM DAI Links */
+ priv->dai_link[0].cpus->of_node = asrc_np;
+ priv->dai_link[0].platforms->of_node = asrc_np;
+ priv->dai_link[1].codecs->dai_name = codec_dai_name;
+ priv->dai_link[1].codecs->of_node = codec_np;
+ priv->dai_link[1].cpus->of_node = cpu_np;
+ priv->dai_link[1].dai_fmt = priv->dai_fmt;
+ priv->card.num_links = 2;
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
+ &priv->asrc_rate);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto asrc_fail;
+ }
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-format",
+ &priv->asrc_format);
+ if (ret) {
+ /* Fallback to old binding; translate to asrc_format */
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-width",
+ &width);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to decide output format\n");
+ goto asrc_fail;
+ }
+
+ if (width == 24)
+ priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
+ else
+ priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
+ }
+
+ /* Finish card registering */
+ platform_set_drvdata(pdev, priv);
+ snd_soc_card_set_drvdata(&priv->card, priv);
+
+ ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ goto asrc_fail;
+ }
+
+asrc_fail:
+ of_node_put(asrc_np);
+ of_node_put(codec_np);
+ put_device(&cpu_pdev->dev);
+fail:
+ of_node_put(cpu_np);
+
+ return ret;
+}
+
+static const struct of_device_id smm_card_dt_ids[] = {
+ { .compatible = "bsh,imx-audio-tlv320aic31xx", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, smm_card_dt_ids);
+
+static struct platform_driver smm_bsh_card_driver = {
+ .probe = smm_card_probe,
+ .driver = {
+ .name = "smm-tlv320aic31xx",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = smm_card_dt_ids,
+ },
+};
+module_platform_driver(smm_bsh_card_driver);
+
+MODULE_DESCRIPTION("BSH smm2-pro audio card");
+MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
+MODULE_ALIAS("platform:smm-tlv320aic31xx");
+MODULE_LICENSE("GPL");
The smm-tlv320aic31xx driver implement audio support of smm-s2-pro BSH system master. Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> --- sound/soc/fsl/Kconfig | 11 ++ sound/soc/fsl/Makefile | 2 + sound/soc/fsl/smm-tlv320aic31xx.c | 308 ++++++++++++++++++++++++++++++ 3 files changed, 321 insertions(+) create mode 100644 sound/soc/fsl/smm-tlv320aic31xx.c