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1// SPDX-License-Identifier: GPL-2.02//3// Copyright (c) 2019 BayLibre, SAS.4// Author: Jerome Brunet <jbrunet@baylibre.com>5 6#include <linux/bitfield.h>7#include <linux/clk.h>8#include <linux/module.h>9#include <sound/pcm_params.h>10#include <linux/regmap.h>11#include <linux/reset.h>12#include <sound/soc.h>13#include <sound/soc-dai.h>14 15#include <dt-bindings/sound/meson-g12a-tohdmitx.h>16#include "meson-codec-glue.h"17 18#define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"19 20#define TOHDMITX_CTRL0			0x021#define  CTRL0_ENABLE_SHIFT		3122#define  CTRL0_I2S_DAT_SEL_SHIFT	1223#define  CTRL0_I2S_DAT_SEL		(0x3 << CTRL0_I2S_DAT_SEL_SHIFT)24#define  CTRL0_I2S_LRCLK_SEL		GENMASK(9, 8)25#define  CTRL0_I2S_BLK_CAP_INV		BIT(7)26#define  CTRL0_I2S_BCLK_O_INV		BIT(6)27#define  CTRL0_I2S_BCLK_SEL		GENMASK(5, 4)28#define  CTRL0_SPDIF_CLK_CAP_INV	BIT(3)29#define  CTRL0_SPDIF_CLK_O_INV		BIT(2)30#define  CTRL0_SPDIF_SEL_SHIFT		131#define  CTRL0_SPDIF_SEL		(0x1 << CTRL0_SPDIF_SEL_SHIFT)32#define  CTRL0_SPDIF_CLK_SEL		BIT(0)33 34static const char * const g12a_tohdmitx_i2s_mux_texts[] = {35	"I2S A", "I2S B", "I2S C",36};37 38static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol,39				   struct snd_ctl_elem_value *ucontrol)40{41	struct snd_soc_component *component =42		snd_soc_dapm_kcontrol_component(kcontrol);43	struct snd_soc_dapm_context *dapm =44		snd_soc_dapm_kcontrol_dapm(kcontrol);45	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;46	unsigned int mux, changed;47 48	if (ucontrol->value.enumerated.item[0] >= e->items)49		return -EINVAL;50 51	mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);52	changed = snd_soc_component_test_bits(component, e->reg,53					      CTRL0_I2S_DAT_SEL,54					      FIELD_PREP(CTRL0_I2S_DAT_SEL,55							 mux));56 57	if (!changed)58		return 0;59 60	/* Force disconnect of the mux while updating */61	snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);62 63	snd_soc_component_update_bits(component, e->reg,64				      CTRL0_I2S_DAT_SEL |65				      CTRL0_I2S_LRCLK_SEL |66				      CTRL0_I2S_BCLK_SEL,67				      FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |68				      FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |69				      FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));70 71	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);72 73	return 1;74}75 76static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0,77			    CTRL0_I2S_DAT_SEL_SHIFT,78			    g12a_tohdmitx_i2s_mux_texts);79 80static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =81	SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,82			  snd_soc_dapm_get_enum_double,83			  g12a_tohdmitx_i2s_mux_put_enum);84 85static const char * const g12a_tohdmitx_spdif_mux_texts[] = {86	"SPDIF A", "SPDIF B",87};88 89static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,90					    struct snd_ctl_elem_value *ucontrol)91{92	struct snd_soc_component *component =93		snd_soc_dapm_kcontrol_component(kcontrol);94	struct snd_soc_dapm_context *dapm =95		snd_soc_dapm_kcontrol_dapm(kcontrol);96	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;97	unsigned int mux, changed;98 99	if (ucontrol->value.enumerated.item[0] >= e->items)100		return -EINVAL;101 102	mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);103	changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0,104					      CTRL0_SPDIF_SEL,105					      FIELD_PREP(CTRL0_SPDIF_SEL, mux));106 107	if (!changed)108		return 0;109 110	/* Force disconnect of the mux while updating */111	snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);112 113	snd_soc_component_update_bits(component, TOHDMITX_CTRL0,114				      CTRL0_SPDIF_SEL |115				      CTRL0_SPDIF_CLK_SEL,116				      FIELD_PREP(CTRL0_SPDIF_SEL, mux) |117				      FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));118 119	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);120 121	return 1;122}123 124static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0,125			    CTRL0_SPDIF_SEL_SHIFT,126			    g12a_tohdmitx_spdif_mux_texts);127 128static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =129	SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,130			  snd_soc_dapm_get_enum_double,131			  g12a_tohdmitx_spdif_mux_put_enum);132 133static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =134	SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,135				    CTRL0_ENABLE_SHIFT, 1, 0);136 137static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {138	SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,139			 &g12a_tohdmitx_i2s_mux),140	SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,141			    &g12a_tohdmitx_out_enable),142	SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,143			 &g12a_tohdmitx_spdif_mux),144	SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,145			    &g12a_tohdmitx_out_enable),146};147 148static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {149	.probe		= meson_codec_glue_input_dai_probe,150	.remove		= meson_codec_glue_input_dai_remove,151	.hw_params	= meson_codec_glue_input_hw_params,152	.set_fmt	= meson_codec_glue_input_set_fmt,153};154 155static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {156	.startup	= meson_codec_glue_output_startup,157};158 159#define TOHDMITX_SPDIF_FORMATS					\160	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |	\161	 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)162 163#define TOHDMITX_I2S_FORMATS					\164	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |	\165	 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |	\166	 SNDRV_PCM_FMTBIT_S32_LE)167 168#define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax)		\169{								\170	.stream_name	= xname " " xsuffix,			\171	.channels_min	= 1,					\172	.channels_max	= (xchmax),				\173	.rate_min       = 8000,					\174	.rate_max	= 192000,				\175	.formats	= (xfmt),				\176}177 178#define TOHDMITX_IN(xname, xid, xfmt, xchmax) {				\179	.name = xname,							\180	.id = (xid),							\181	.playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax),	\182	.ops = &g12a_tohdmitx_input_ops,				\183}184 185#define TOHDMITX_OUT(xname, xid, xfmt, xchmax) {			\186	.name = xname,							\187	.id = (xid),							\188	.capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax),	\189	.ops = &g12a_tohdmitx_output_ops,				\190}191 192static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {193	TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,194		    TOHDMITX_I2S_FORMATS, 8),195	TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,196		    TOHDMITX_I2S_FORMATS, 8),197	TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,198		    TOHDMITX_I2S_FORMATS, 8),199	TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,200		     TOHDMITX_I2S_FORMATS, 8),201	TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,202		    TOHDMITX_SPDIF_FORMATS, 2),203	TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,204		    TOHDMITX_SPDIF_FORMATS, 2),205	TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,206		     TOHDMITX_SPDIF_FORMATS, 2),207};208 209static int g12a_tohdmi_component_probe(struct snd_soc_component *c)210{211	/* Initialize the static clock parameters */212	return snd_soc_component_write(c, TOHDMITX_CTRL0,213		     CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);214}215 216static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {217	{ "I2S SRC", "I2S A", "I2S IN A Playback" },218	{ "I2S SRC", "I2S B", "I2S IN B Playback" },219	{ "I2S SRC", "I2S C", "I2S IN C Playback" },220	{ "I2S OUT EN", "Switch", "I2S SRC" },221	{ "I2S OUT Capture", NULL, "I2S OUT EN" },222	{ "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },223	{ "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },224	{ "SPDIF OUT EN", "Switch", "SPDIF SRC" },225	{ "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },226};227 228static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {229	.probe			= g12a_tohdmi_component_probe,230	.dapm_widgets		= g12a_tohdmitx_widgets,231	.num_dapm_widgets	= ARRAY_SIZE(g12a_tohdmitx_widgets),232	.dapm_routes		= g12a_tohdmitx_routes,233	.num_dapm_routes	= ARRAY_SIZE(g12a_tohdmitx_routes),234	.endianness		= 1,235};236 237static const struct regmap_config g12a_tohdmitx_regmap_cfg = {238	.reg_bits	= 32,239	.val_bits	= 32,240	.reg_stride	= 4,241};242 243static const struct of_device_id g12a_tohdmitx_of_match[] = {244	{ .compatible = "amlogic,g12a-tohdmitx", },245	{}246};247MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);248 249static int g12a_tohdmitx_probe(struct platform_device *pdev)250{251	struct device *dev = &pdev->dev;252	void __iomem *regs;253	struct regmap *map;254	int ret;255 256	ret = device_reset(dev);257	if (ret)258		return ret;259 260	regs = devm_platform_ioremap_resource(pdev, 0);261	if (IS_ERR(regs))262		return PTR_ERR(regs);263 264	map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);265	if (IS_ERR(map)) {266		dev_err(dev, "failed to init regmap: %ld\n",267			PTR_ERR(map));268		return PTR_ERR(map);269	}270 271	return devm_snd_soc_register_component(dev,272			&g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,273			ARRAY_SIZE(g12a_tohdmitx_dai_drv));274}275 276static struct platform_driver g12a_tohdmitx_pdrv = {277	.driver = {278		.name = G12A_TOHDMITX_DRV_NAME,279		.of_match_table = g12a_tohdmitx_of_match,280	},281	.probe = g12a_tohdmitx_probe,282};283module_platform_driver(g12a_tohdmitx_pdrv);284 285MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");286MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");287MODULE_LICENSE("GPL v2");288