Adding upstream version 5.10.209.upstream/5.10.209upstream

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

1 files changed, 255 insertions, 0 deletions

diff --git a/sound/soc/meson/g12a-toacodec.c b/sound/soc/meson/g12a-toacodec.c
new file mode 100644
index 000000000..5ddeb22ac
--- /dev/null
+++ b/sound/soc/meson/g12a-toacodec.c
@@ -0,0 +1,255 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2020 BayLibre, SAS.
+// Author: Jerome Brunet <jbrunet@baylibre.com>
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <sound/pcm_params.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include <dt-bindings/sound/meson-g12a-toacodec.h>
+#include "axg-tdm.h"
+#include "meson-codec-glue.h"
+
+#define G12A_TOACODEC_DRV_NAME "g12a-toacodec"
+
+#define TOACODEC_CTRL0			0x0
+#define  CTRL0_ENABLE_SHIFT		31
+#define  CTRL0_DAT_SEL_SHIFT		14
+#define  CTRL0_DAT_SEL			(0x3 << CTRL0_DAT_SEL_SHIFT)
+#define  CTRL0_LANE_SEL			12
+#define  CTRL0_LRCLK_SEL		GENMASK(9, 8)
+#define  CTRL0_BLK_CAP_INV		BIT(7)
+#define  CTRL0_BCLK_O_INV		BIT(6)
+#define  CTRL0_BCLK_SEL			GENMASK(5, 4)
+#define  CTRL0_MCLK_SEL			GENMASK(2, 0)
+
+#define TOACODEC_OUT_CHMAX		2
+
+static const char * const g12a_toacodec_mux_texts[] = {
+	"I2S A", "I2S B", "I2S C",
+};
+
+static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
+				      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_kcontrol_component(kcontrol);
+	struct snd_soc_dapm_context *dapm =
+		snd_soc_dapm_kcontrol_dapm(kcontrol);
+	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+	unsigned int mux, changed;
+
+	if (ucontrol->value.enumerated.item[0] >= e->items)
+		return -EINVAL;
+
+	mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
+	changed = snd_soc_component_test_bits(component, e->reg,
+					      CTRL0_DAT_SEL,
+					      FIELD_PREP(CTRL0_DAT_SEL, mux));
+
+	if (!changed)
+		return 0;
+
+	/* Force disconnect of the mux while updating */
+	snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
+
+	snd_soc_component_update_bits(component, e->reg,
+				      CTRL0_DAT_SEL |
+				      CTRL0_LRCLK_SEL |
+				      CTRL0_BCLK_SEL,
+				      FIELD_PREP(CTRL0_DAT_SEL, mux) |
+				      FIELD_PREP(CTRL0_LRCLK_SEL, mux) |
+				      FIELD_PREP(CTRL0_BCLK_SEL, mux));
+
+	/*
+	 * FIXME:
+	 * On this soc, the glue gets the MCLK directly from the clock
+	 * controller instead of going the through the TDM interface.
+	 *
+	 * Here we assume interface A uses clock A, etc ... While it is
+	 * true for now, it could be different. Instead the glue should
+	 * find out the clock used by the interface and select the same
+	 * source. For that, we will need regmap backed clock mux which
+	 * is a work in progress
+	 */
+	snd_soc_component_update_bits(component, e->reg,
+				      CTRL0_MCLK_SEL,
+				      FIELD_PREP(CTRL0_MCLK_SEL, mux));
+
+	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
+
+	return 1;
+}
+
+static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
+			    CTRL0_DAT_SEL_SHIFT,
+			    g12a_toacodec_mux_texts);
+
+static const struct snd_kcontrol_new g12a_toacodec_mux =
+	SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum,
+			  snd_soc_dapm_get_enum_double,
+			  g12a_toacodec_mux_put_enum);
+
+static const struct snd_kcontrol_new g12a_toacodec_out_enable =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
+				    CTRL0_ENABLE_SHIFT, 1, 0);
+
+static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
+	SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
+			 &g12a_toacodec_mux),
+	SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
+			    &g12a_toacodec_out_enable),
+};
+
+static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream,
+					 struct snd_pcm_hw_params *params,
+					 struct snd_soc_dai *dai)
+{
+	struct meson_codec_glue_input *data;
+	int ret;
+
+	ret = meson_codec_glue_input_hw_params(substream, params, dai);
+	if (ret)
+		return ret;
+
+	/* The glue will provide 1 lane out of the 4 to the output */
+	data = meson_codec_glue_input_get_data(dai);
+	data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX,
+					data->params.channels_min);
+	data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX,
+					data->params.channels_max);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops g12a_toacodec_input_ops = {
+	.hw_params	= g12a_toacodec_input_hw_params,
+	.set_fmt	= meson_codec_glue_input_set_fmt,
+};
+
+static const struct snd_soc_dai_ops g12a_toacodec_output_ops = {
+	.startup	= meson_codec_glue_output_startup,
+};
+
+#define TOACODEC_STREAM(xname, xsuffix, xchmax)			\
+{								\
+	.stream_name	= xname " " xsuffix,			\
+	.channels_min	= 1,					\
+	.channels_max	= (xchmax),				\
+	.rate_min       = 5512,					\
+	.rate_max	= 192000,				\
+	.formats	= AXG_TDM_FORMATS,			\
+}
+
+#define TOACODEC_INPUT(xname, xid) {					\
+	.name = xname,							\
+	.id = (xid),							\
+	.playback = TOACODEC_STREAM(xname, "Playback", 8),		\
+	.ops = &g12a_toacodec_input_ops,				\
+	.probe = meson_codec_glue_input_dai_probe,			\
+	.remove = meson_codec_glue_input_dai_remove,			\
+}
+
+#define TOACODEC_OUTPUT(xname, xid) {					\
+	.name = xname,							\
+	.id = (xid),							\
+	.capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \
+	.ops = &g12a_toacodec_output_ops,				\
+}
+
+static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = {
+	TOACODEC_INPUT("IN A", TOACODEC_IN_A),
+	TOACODEC_INPUT("IN B", TOACODEC_IN_B),
+	TOACODEC_INPUT("IN C", TOACODEC_IN_C),
+	TOACODEC_OUTPUT("OUT", TOACODEC_OUT),
+};
+
+static int g12a_toacodec_component_probe(struct snd_soc_component *c)
+{
+	/* Initialize the static clock parameters */
+	return snd_soc_component_write(c, TOACODEC_CTRL0,
+				       CTRL0_BLK_CAP_INV);
+}
+
+static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
+	{ "SRC", "I2S A", "IN A Playback" },
+	{ "SRC", "I2S B", "IN B Playback" },
+	{ "SRC", "I2S C", "IN C Playback" },
+	{ "OUT EN", "Switch", "SRC" },
+	{ "OUT Capture", NULL, "OUT EN" },
+};
+
+static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
+	SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
+};
+
+static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
+	.probe			= g12a_toacodec_component_probe,
+	.controls		= g12a_toacodec_controls,
+	.num_controls		= ARRAY_SIZE(g12a_toacodec_controls),
+	.dapm_widgets		= g12a_toacodec_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(g12a_toacodec_widgets),
+	.dapm_routes		= g12a_toacodec_routes,
+	.num_dapm_routes	= ARRAY_SIZE(g12a_toacodec_routes),
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static const struct regmap_config g12a_toacodec_regmap_cfg = {
+	.reg_bits	= 32,
+	.val_bits	= 32,
+	.reg_stride	= 4,
+};
+
+static const struct of_device_id g12a_toacodec_of_match[] = {
+	{ .compatible = "amlogic,g12a-toacodec", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
+
+static int g12a_toacodec_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	void __iomem *regs;
+	struct regmap *map;
+	int ret;
+
+	ret = device_reset(dev);
+	if (ret)
+		return ret;
+
+	regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg);
+	if (IS_ERR(map)) {
+		dev_err(dev, "failed to init regmap: %ld\n",
+			PTR_ERR(map));
+		return PTR_ERR(map);
+	}
+
+	return devm_snd_soc_register_component(dev,
+			&g12a_toacodec_component_drv, g12a_toacodec_dai_drv,
+			ARRAY_SIZE(g12a_toacodec_dai_drv));
+}
+
+static struct platform_driver g12a_toacodec_pdrv = {
+	.driver = {
+		.name = G12A_TOACODEC_DRV_NAME,
+		.of_match_table = g12a_toacodec_of_match,
+	},
+	.probe = g12a_toacodec_probe,
+};
+module_platform_driver(g12a_toacodec_pdrv);
+
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver");
+MODULE_LICENSE("GPL v2");