1 files changed, 325 insertions, 0 deletions
diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c
new file mode 100644
index 000000000..e54b89611
--- /dev/null
+++ b/sound/soc/qcom/apq8016_sbc.c
@@ -0,0 +1,325 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/jack.h>
+#include <sound/soc.h>
+#include <uapi/linux/input-event-codes.h>
+#include <dt-bindings/sound/apq8016-lpass.h>
+#include "common.h"
+#include "qdsp6/q6afe.h"
+
+#define MI2S_COUNT  (MI2S_QUATERNARY + 1)
+
+struct apq8016_sbc_data {
+	struct snd_soc_card card;
+	void __iomem *mic_iomux;
+	void __iomem *spkr_iomux;
+	struct snd_soc_jack jack;
+	bool jack_setup;
+	int mi2s_clk_count[MI2S_COUNT];
+};
+
+#define MIC_CTRL_TER_WS_SLAVE_SEL	BIT(21)
+#define MIC_CTRL_QUA_WS_SLAVE_SEL_10	BIT(17)
+#define MIC_CTRL_TLMM_SCLK_EN		BIT(1)
+#define	SPKR_CTL_PRI_WS_SLAVE_SEL_11	(BIT(17) | BIT(16))
+#define SPKR_CTL_TLMM_MCLK_EN		BIT(1)
+#define SPKR_CTL_TLMM_SCLK_EN		BIT(2)
+#define SPKR_CTL_TLMM_DATA1_EN		BIT(3)
+#define SPKR_CTL_TLMM_WS_OUT_SEL_MASK	GENMASK(7, 6)
+#define SPKR_CTL_TLMM_WS_OUT_SEL_SEC	BIT(6)
+#define SPKR_CTL_TLMM_WS_EN_SEL_MASK	GENMASK(19, 18)
+#define SPKR_CTL_TLMM_WS_EN_SEL_SEC	BIT(18)
+#define DEFAULT_MCLK_RATE		9600000
+#define MI2S_BCLK_RATE			1536000
+
+static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
+{
+	struct snd_soc_dai *codec_dai;
+	struct snd_soc_component *component;
+	struct snd_soc_card *card = rtd->card;
+	struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
+	int i, rval;
+	u32 value;
+
+	switch (mi2s) {
+	case MI2S_PRIMARY:
+		writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
+			pdata->spkr_iomux);
+		break;
+
+	case MI2S_QUATERNARY:
+		/* Configure the Quat MI2S to TLMM */
+		writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
+			MIC_CTRL_TLMM_SCLK_EN,
+			pdata->mic_iomux);
+		break;
+	case MI2S_SECONDARY:
+		/* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
+		value = readl(pdata->spkr_iomux) &
+			~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
+		/* Configure the Sec MI2S to TLMM */
+		writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
+			SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
+			SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
+		break;
+	case MI2S_TERTIARY:
+		writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
+			MIC_CTRL_TLMM_SCLK_EN,
+			pdata->mic_iomux);
+
+		break;
+
+	default:
+		dev_err(card->dev, "unsupported cpu dai configuration\n");
+		return -EINVAL;
+
+	}
+
+	if (!pdata->jack_setup) {
+		struct snd_jack *jack;
+
+		rval = snd_soc_card_jack_new(card, "Headset Jack",
+					     SND_JACK_HEADSET |
+					     SND_JACK_HEADPHONE |
+					     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+					     SND_JACK_BTN_2 | SND_JACK_BTN_3 |
+					     SND_JACK_BTN_4,
+					     &pdata->jack);
+
+		if (rval < 0) {
+			dev_err(card->dev, "Unable to add Headphone Jack\n");
+			return rval;
+		}
+
+		jack = pdata->jack.jack;
+
+		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
+		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+		pdata->jack_setup = true;
+	}
+
+	for_each_rtd_codec_dais(rtd, i, codec_dai) {
+
+		component = codec_dai->component;
+		/* Set default mclk for internal codec */
+		rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
+				       SND_SOC_CLOCK_IN);
+		if (rval != 0 && rval != -ENOTSUPP) {
+			dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
+			return rval;
+		}
+		rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
+		if (rval != 0 && rval != -ENOTSUPP) {
+			dev_warn(card->dev, "Failed to set jack: %d\n", rval);
+			return rval;
+		}
+	}
+
+	return 0;
+}
+
+static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+
+	return apq8016_dai_init(rtd, cpu_dai->id);
+}
+
+static void apq8016_sbc_add_ops(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *link;
+	int i;
+
+	for_each_card_prelinks(card, i, link)
+		link->init = apq8016_sbc_dai_init;
+}
+
+static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
+{
+	switch (cpu_dai->id) {
+	case PRIMARY_MI2S_RX:
+	case PRIMARY_MI2S_TX:
+		return MI2S_PRIMARY;
+	case SECONDARY_MI2S_RX:
+	case SECONDARY_MI2S_TX:
+		return MI2S_SECONDARY;
+	case TERTIARY_MI2S_RX:
+	case TERTIARY_MI2S_TX:
+		return MI2S_TERTIARY;
+	case QUATERNARY_MI2S_RX:
+	case QUATERNARY_MI2S_TX:
+		return MI2S_QUATERNARY;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+
+	snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
+	return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
+}
+
+static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int mi2s, ret;
+
+	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
+	if (mi2s < 0)
+		return mi2s;
+
+	if (++data->mi2s_clk_count[mi2s] > 1)
+		return 0;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
+	if (ret)
+		dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
+	return ret;
+}
+
+static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int mi2s, ret;
+
+	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
+	if (mi2s < 0)
+		return;
+
+	if (--data->mi2s_clk_count[mi2s] > 0)
+		return;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
+	if (ret)
+		dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
+}
+
+static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
+	.startup = msm8916_qdsp6_startup,
+	.shutdown = msm8916_qdsp6_shutdown,
+};
+
+static int msm8916_qdsp6_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);
+	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
+
+	return 0;
+}
+
+static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *link;
+	int i;
+
+	/* Make it obvious to userspace that QDSP6 is used */
+	card->components = "qdsp6";
+
+	for_each_card_prelinks(card, i, link) {
+		if (link->no_pcm) {
+			link->init = msm8916_qdsp6_dai_init;
+			link->ops = &msm8916_qdsp6_be_ops;
+			link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
+		}
+	}
+}
+
+static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
+
+	SND_SOC_DAPM_MIC("Handset Mic", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Secondary Mic", NULL),
+	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
+	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
+};
+
+static int apq8016_sbc_platform_probe(struct platform_device *pdev)
+{
+	void (*add_ops)(struct snd_soc_card *card);
+	struct device *dev = &pdev->dev;
+	struct snd_soc_card *card;
+	struct apq8016_sbc_data *data;
+	int ret;
+
+	add_ops = device_get_match_data(&pdev->dev);
+	if (!add_ops)
+		return -EINVAL;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	card = &data->card;
+	card->dev = dev;
+	card->owner = THIS_MODULE;
+	card->dapm_widgets = apq8016_sbc_dapm_widgets;
+	card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
+
+	ret = qcom_snd_parse_of(card);
+	if (ret)
+		return ret;
+
+	data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
+	if (IS_ERR(data->mic_iomux))
+		return PTR_ERR(data->mic_iomux);
+
+	data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
+	if (IS_ERR(data->spkr_iomux))
+		return PTR_ERR(data->spkr_iomux);
+
+	snd_soc_card_set_drvdata(card, data);
+
+	add_ops(card);
+	return devm_snd_soc_register_card(&pdev->dev, card);
+}
+
+static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
+	{ .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
+	{ .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
+	{},
+};
+MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
+
+static struct platform_driver apq8016_sbc_platform_driver = {
+	.driver = {
+		.name = "qcom-apq8016-sbc",
+		.of_match_table = of_match_ptr(apq8016_sbc_device_id),
+	},
+	.probe = apq8016_sbc_platform_probe,
+};
+module_platform_driver(apq8016_sbc_platform_driver);
+
+MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
+MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");