Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 240 insertions, 0 deletions

diff --git a/sound/soc/codecs/pcm179x.c b/sound/soc/codecs/pcm179x.c
new file mode 100644
index 000000000..4b311c06f
--- /dev/null
+++ b/sound/soc/codecs/pcm179x.c
@@ -0,0 +1,240 @@
+/*
+ * PCM179X ASoC codec driver
+ *
+ * Copyright (c) Amarula Solutions B.V. 2013
+ *
+ *     Michael Trimarchi <michael@amarulasolutions.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <linux/of.h>
+
+#include "pcm179x.h"
+
+#define PCM179X_DAC_VOL_LEFT	0x10
+#define PCM179X_DAC_VOL_RIGHT	0x11
+#define PCM179X_FMT_CONTROL	0x12
+#define PCM179X_MODE_CONTROL	0x13
+#define PCM179X_SOFT_MUTE	PCM179X_FMT_CONTROL
+
+#define PCM179X_FMT_MASK	0x70
+#define PCM179X_FMT_SHIFT	4
+#define PCM179X_MUTE_MASK	0x01
+#define PCM179X_MUTE_SHIFT	0
+#define PCM179X_ATLD_ENABLE	(1 << 7)
+
+static const struct reg_default pcm179x_reg_defaults[] = {
+	{ 0x10, 0xff },
+	{ 0x11, 0xff },
+	{ 0x12, 0x50 },
+	{ 0x13, 0x00 },
+	{ 0x14, 0x00 },
+	{ 0x15, 0x01 },
+	{ 0x16, 0x00 },
+	{ 0x17, 0x00 },
+};
+
+static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg)
+{
+	return reg >= 0x10 && reg <= 0x17;
+}
+
+static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg)
+{
+	bool accessible;
+
+	accessible = pcm179x_accessible_reg(dev, reg);
+
+	return accessible && reg != 0x16 && reg != 0x17;
+}
+
+struct pcm179x_private {
+	struct regmap *regmap;
+	unsigned int format;
+	unsigned int rate;
+};
+
+static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai,
+                             unsigned int format)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
+
+	priv->format = format;
+
+	return 0;
+}
+
+static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+	struct snd_soc_component *component = dai->component;
+	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE,
+				 PCM179X_MUTE_MASK, !!mute);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int pcm179x_hw_params(struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *params,
+			     struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
+	int val = 0, ret;
+
+	priv->rate = params_rate(params);
+
+	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_RIGHT_J:
+		switch (params_width(params)) {
+		case 24:
+		case 32:
+			val = 2;
+			break;
+		case 16:
+			val = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case SND_SOC_DAIFMT_I2S:
+		switch (params_width(params)) {
+		case 24:
+		case 32:
+			val = 5;
+			break;
+		case 16:
+			val = 4;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		dev_err(component->dev, "Invalid DAI format\n");
+		return -EINVAL;
+	}
+
+	val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE;
+
+	ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL,
+				 PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops pcm179x_dai_ops = {
+	.set_fmt	= pcm179x_set_dai_fmt,
+	.hw_params	= pcm179x_hw_params,
+	.digital_mute	= pcm179x_digital_mute,
+};
+
+static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1);
+
+static const struct snd_kcontrol_new pcm179x_controls[] = {
+	SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT,
+			 PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
+			 pcm179x_dac_tlv),
+	SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0),
+	SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = {
+SND_SOC_DAPM_OUTPUT("IOUTL+"),
+SND_SOC_DAPM_OUTPUT("IOUTL-"),
+SND_SOC_DAPM_OUTPUT("IOUTR+"),
+SND_SOC_DAPM_OUTPUT("IOUTR-"),
+};
+
+static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = {
+	{ "IOUTL+", NULL, "Playback" },
+	{ "IOUTL-", NULL, "Playback" },
+	{ "IOUTR+", NULL, "Playback" },
+	{ "IOUTR-", NULL, "Playback" },
+};
+
+static struct snd_soc_dai_driver pcm179x_dai = {
+	.name = "pcm179x-hifi",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.rate_min = 10000,
+		.rate_max = 200000,
+		.formats = PCM1792A_FORMATS, },
+	.ops = &pcm179x_dai_ops,
+};
+
+const struct regmap_config pcm179x_regmap_config = {
+	.reg_bits		= 8,
+	.val_bits		= 8,
+	.max_register		= 23,
+	.reg_defaults		= pcm179x_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(pcm179x_reg_defaults),
+	.writeable_reg		= pcm179x_writeable_reg,
+	.readable_reg		= pcm179x_accessible_reg,
+};
+EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
+
+static const struct snd_soc_component_driver soc_component_dev_pcm179x = {
+	.controls		= pcm179x_controls,
+	.num_controls		= ARRAY_SIZE(pcm179x_controls),
+	.dapm_widgets		= pcm179x_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(pcm179x_dapm_widgets),
+	.dapm_routes		= pcm179x_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(pcm179x_dapm_routes),
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+int pcm179x_common_init(struct device *dev, struct regmap *regmap)
+{
+	struct pcm179x_private *pcm179x;
+
+	pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private),
+				GFP_KERNEL);
+	if (!pcm179x)
+		return -ENOMEM;
+
+	pcm179x->regmap = regmap;
+	dev_set_drvdata(dev, pcm179x);
+
+	return devm_snd_soc_register_component(dev,
+			&soc_component_dev_pcm179x, &pcm179x_dai, 1);
+}
+EXPORT_SYMBOL_GPL(pcm179x_common_init);
+
+MODULE_DESCRIPTION("ASoC PCM179X driver");
+MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
+MODULE_LICENSE("GPL");