315 lines · c
1// SPDX-License-Identifier: GPL-2.02//3// Copyright (c) 2020 BayLibre, SAS.4// Author: Jerome Brunet <jbrunet@baylibre.com>5 6#include <linux/clk.h>7#include <linux/delay.h>8#include <linux/module.h>9#include <linux/regmap.h>10#include <linux/regulator/consumer.h>11#include <linux/reset.h>12#include <sound/soc.h>13#include <sound/tlv.h>14 15#define BLOCK_EN 0x0016#define LORN_EN 017#define LORP_EN 118#define LOLN_EN 219#define LOLP_EN 320#define DACR_EN 421#define DACL_EN 522#define DACR_INV 2023#define DACL_INV 2124#define DACR_SRC 2225#define DACL_SRC 2326#define REFP_BUF_EN BIT(12)27#define BIAS_CURRENT_EN BIT(13)28#define VMID_GEN_FAST BIT(14)29#define VMID_GEN_EN BIT(15)30#define I2S_MODE BIT(30)31#define VOL_CTRL0 0x0432#define GAIN_H 3133#define GAIN_L 2334#define VOL_CTRL1 0x0835#define DAC_MONO 836#define RAMP_RATE 1037#define VC_RAMP_MODE 1238#define MUTE_MODE 1339#define UNMUTE_MODE 1440#define DAC_SOFT_MUTE 1541#define DACR_VC 1642#define DACL_VC 2443#define LINEOUT_CFG 0x0c44#define LORN_POL 045#define LORP_POL 446#define LOLN_POL 847#define LOLP_POL 1248#define POWER_CFG 0x1049 50struct t9015 {51 struct regulator *avdd;52};53 54static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)55{56 struct snd_soc_component *component = dai->component;57 unsigned int val;58 59 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {60 case SND_SOC_DAIFMT_CBM_CFM:61 val = I2S_MODE;62 break;63 64 case SND_SOC_DAIFMT_CBS_CFS:65 val = 0;66 break;67 68 default:69 return -EINVAL;70 }71 72 snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val);73 74 if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) &&75 ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J))76 return -EINVAL;77 78 return 0;79}80 81static const struct snd_soc_dai_ops t9015_dai_ops = {82 .set_fmt = t9015_dai_set_fmt,83};84 85static struct snd_soc_dai_driver t9015_dai = {86 .name = "t9015-hifi",87 .playback = {88 .stream_name = "Playback",89 .channels_min = 1,90 .channels_max = 2,91 .rates = SNDRV_PCM_RATE_8000_96000,92 .formats = (SNDRV_PCM_FMTBIT_S8 |93 SNDRV_PCM_FMTBIT_S16_LE |94 SNDRV_PCM_FMTBIT_S20_LE |95 SNDRV_PCM_FMTBIT_S24_LE),96 },97 .ops = &t9015_dai_ops,98};99 100static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0);101 102static const char * const ramp_rate_txt[] = { "Fast", "Slow" };103static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE,104 ramp_rate_txt);105 106static const char * const dacr_in_txt[] = { "Right", "Left" };107static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt);108 109static const char * const dacl_in_txt[] = { "Left", "Right" };110static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt);111 112static const char * const mono_txt[] = { "Stereo", "Mono"};113static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt);114 115static const struct snd_kcontrol_new t9015_snd_controls[] = {116 /* Volume Controls */117 SOC_ENUM("Playback Channel Mode", mono_enum),118 SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1),119 SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC,120 0xff, 0, dac_vol_tlv),121 122 /* Ramp Controls */123 SOC_ENUM("Ramp Rate", ramp_rate_enum),124 SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0),125 SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0),126 SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0),127};128 129static const struct snd_kcontrol_new t9015_right_dac_mux =130 SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum);131static const struct snd_kcontrol_new t9015_left_dac_mux =132 SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum);133 134static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = {135 SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0),136 SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0),137 SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0,138 &t9015_right_dac_mux),139 SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0,140 &t9015_left_dac_mux),141 SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0),142 SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0),143 SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0,144 NULL, 0),145 SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0,146 NULL, 0),147 SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0,148 NULL, 0),149 SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0,150 NULL, 0),151 SND_SOC_DAPM_OUTPUT("LORN"),152 SND_SOC_DAPM_OUTPUT("LORP"),153 SND_SOC_DAPM_OUTPUT("LOLN"),154 SND_SOC_DAPM_OUTPUT("LOLP"),155};156 157static const struct snd_soc_dapm_route t9015_dapm_routes[] = {158 { "Right IN", NULL, "Playback" },159 { "Left IN", NULL, "Playback" },160 { "Right DAC Sel", "Right", "Right IN" },161 { "Right DAC Sel", "Left", "Left IN" },162 { "Left DAC Sel", "Right", "Right IN" },163 { "Left DAC Sel", "Left", "Left IN" },164 { "Right DAC", NULL, "Right DAC Sel" },165 { "Left DAC", NULL, "Left DAC Sel" },166 { "Right- Driver", NULL, "Right DAC" },167 { "Right+ Driver", NULL, "Right DAC" },168 { "Left- Driver", NULL, "Left DAC" },169 { "Left+ Driver", NULL, "Left DAC" },170 { "LORN", NULL, "Right- Driver", },171 { "LORP", NULL, "Right+ Driver", },172 { "LOLN", NULL, "Left- Driver", },173 { "LOLP", NULL, "Left+ Driver", },174};175 176static int t9015_set_bias_level(struct snd_soc_component *component,177 enum snd_soc_bias_level level)178{179 struct t9015 *priv = snd_soc_component_get_drvdata(component);180 enum snd_soc_bias_level now =181 snd_soc_component_get_bias_level(component);182 int ret;183 184 switch (level) {185 case SND_SOC_BIAS_ON:186 snd_soc_component_update_bits(component, BLOCK_EN,187 BIAS_CURRENT_EN,188 BIAS_CURRENT_EN);189 break;190 case SND_SOC_BIAS_PREPARE:191 snd_soc_component_update_bits(component, BLOCK_EN,192 BIAS_CURRENT_EN,193 0);194 break;195 case SND_SOC_BIAS_STANDBY:196 ret = regulator_enable(priv->avdd);197 if (ret) {198 dev_err(component->dev, "AVDD enable failed\n");199 return ret;200 }201 202 if (now == SND_SOC_BIAS_OFF) {203 snd_soc_component_update_bits(component, BLOCK_EN,204 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,205 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN);206 207 mdelay(200);208 snd_soc_component_update_bits(component, BLOCK_EN,209 VMID_GEN_FAST,210 0);211 }212 213 break;214 case SND_SOC_BIAS_OFF:215 snd_soc_component_update_bits(component, BLOCK_EN,216 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,217 0);218 219 regulator_disable(priv->avdd);220 break;221 }222 223 return 0;224}225 226static const struct snd_soc_component_driver t9015_codec_driver = {227 .set_bias_level = t9015_set_bias_level,228 .controls = t9015_snd_controls,229 .num_controls = ARRAY_SIZE(t9015_snd_controls),230 .dapm_widgets = t9015_dapm_widgets,231 .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets),232 .dapm_routes = t9015_dapm_routes,233 .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes),234 .suspend_bias_off = 1,235 .endianness = 1,236};237 238static const struct regmap_config t9015_regmap_config = {239 .reg_bits = 32,240 .reg_stride = 4,241 .val_bits = 32,242 .max_register = POWER_CFG,243};244 245static int t9015_probe(struct platform_device *pdev)246{247 struct device *dev = &pdev->dev;248 struct t9015 *priv;249 void __iomem *regs;250 struct regmap *regmap;251 struct clk *pclk;252 int ret;253 254 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);255 if (!priv)256 return -ENOMEM;257 platform_set_drvdata(pdev, priv);258 259 pclk = devm_clk_get_enabled(dev, "pclk");260 if (IS_ERR(pclk))261 return dev_err_probe(dev, PTR_ERR(pclk), "failed to get core clock\n");262 263 priv->avdd = devm_regulator_get(dev, "AVDD");264 if (IS_ERR(priv->avdd))265 return dev_err_probe(dev, PTR_ERR(priv->avdd), "failed to AVDD\n");266 267 ret = device_reset(dev);268 if (ret) {269 dev_err(dev, "reset failed\n");270 return ret;271 }272 273 regs = devm_platform_ioremap_resource(pdev, 0);274 if (IS_ERR(regs)) {275 dev_err(dev, "register map failed\n");276 return PTR_ERR(regs);277 }278 279 regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config);280 if (IS_ERR(regmap)) {281 dev_err(dev, "regmap init failed\n");282 return PTR_ERR(regmap);283 }284 285 /*286 * Initialize output polarity:287 * ATM the output polarity is fixed but in the future it might useful288 * to add DT property to set this depending on the platform needs289 */290 regmap_write(regmap, LINEOUT_CFG, 0x1111);291 292 return devm_snd_soc_register_component(dev, &t9015_codec_driver,293 &t9015_dai, 1);294}295 296static const struct of_device_id t9015_ids[] __maybe_unused = {297 { .compatible = "amlogic,t9015", },298 { }299};300MODULE_DEVICE_TABLE(of, t9015_ids);301 302static struct platform_driver t9015_driver = {303 .driver = {304 .name = "t9015-codec",305 .of_match_table = of_match_ptr(t9015_ids),306 },307 .probe = t9015_probe,308};309 310module_platform_driver(t9015_driver);311 312MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver");313MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");314MODULE_LICENSE("GPL");315