288 lines · c
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