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-rw-r--r--sound/soc/qcom/sm8250.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
new file mode 100644
index 000000000..9626a9ef7
--- /dev/null
+++ b/sound/soc/qcom/sm8250.c
@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020, Linaro Limited
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm.h>
+#include <linux/soundwire/sdw.h>
+#include <sound/jack.h>
+#include <linux/input-event-codes.h>
+#include "qdsp6/q6afe.h"
+#include "common.h"
+#include "sdw.h"
+
+#define DRIVER_NAME "sm8250"
+#define MI2S_BCLK_RATE 1536000
+
+struct sm8250_snd_data {
+ bool stream_prepared[AFE_PORT_MAX];
+ struct snd_soc_card *card;
+ struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
+ struct snd_soc_jack jack;
+ bool jack_setup;
+};
+
+static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
+
+ return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
+}
+
+static int sm8250_be_hw_params_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);
+
+ rate->min = rate->max = 48000;
+ channels->min = channels->max = 2;
+
+ return 0;
+}
+
+static int sm8250_snd_startup(struct snd_pcm_substream *substream)
+{
+ unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
+ unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+
+ switch (cpu_dai->id) {
+ case TERTIARY_MI2S_RX:
+ codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
+ snd_soc_dai_set_sysclk(cpu_dai,
+ Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
+ MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+ snd_soc_dai_set_fmt(cpu_dai, fmt);
+ snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
+
+ return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
+}
+
+static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
+ struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
+
+ return qcom_snd_sdw_prepare(substream, sruntime,
+ &data->stream_prepared[cpu_dai->id]);
+}
+
+static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
+
+ return qcom_snd_sdw_hw_free(substream, sruntime,
+ &data->stream_prepared[cpu_dai->id]);
+}
+
+static const struct snd_soc_ops sm8250_be_ops = {
+ .startup = sm8250_snd_startup,
+ .hw_params = sm8250_snd_hw_params,
+ .hw_free = sm8250_snd_hw_free,
+ .prepare = sm8250_snd_prepare,
+};
+
+static void sm8250_add_be_ops(struct snd_soc_card *card)
+{
+ struct snd_soc_dai_link *link;
+ int i;
+
+ for_each_card_prelinks(card, i, link) {
+ if (link->no_pcm == 1) {
+ link->init = sm8250_snd_init;
+ link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
+ link->ops = &sm8250_be_ops;
+ }
+ }
+}
+
+static int sm8250_platform_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card;
+ struct sm8250_snd_data *data;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ card->owner = THIS_MODULE;
+ /* Allocate the private data */
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ card->dev = dev;
+ dev_set_drvdata(dev, card);
+ snd_soc_card_set_drvdata(card, data);
+ ret = qcom_snd_parse_of(card);
+ if (ret)
+ return ret;
+
+ card->driver_name = DRIVER_NAME;
+ sm8250_add_be_ops(card);
+ return devm_snd_soc_register_card(dev, card);
+}
+
+static const struct of_device_id snd_sm8250_dt_match[] = {
+ {.compatible = "qcom,sm8250-sndcard"},
+ {.compatible = "qcom,qrb5165-rb5-sndcard"},
+ {}
+};
+
+MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
+
+static struct platform_driver snd_sm8250_driver = {
+ .probe = sm8250_platform_probe,
+ .driver = {
+ .name = "snd-sm8250",
+ .of_match_table = snd_sm8250_dt_match,
+ },
+};
+module_platform_driver(snd_sm8250_driver);
+MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
+MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");