// SPDX-License-Identifier: GPL-2.0 // // Copyright (c) 2020 BayLibre, SAS. // Author: Jerome Brunet #include #include #include #include #include #include #include #include #define BLOCK_EN 0x00 #define LORN_EN 0 #define LORP_EN 1 #define LOLN_EN 2 #define LOLP_EN 3 #define DACR_EN 4 #define DACL_EN 5 #define DACR_INV 20 #define DACL_INV 21 #define DACR_SRC 22 #define DACL_SRC 23 #define REFP_BUF_EN BIT(12) #define BIAS_CURRENT_EN BIT(13) #define VMID_GEN_FAST BIT(14) #define VMID_GEN_EN BIT(15) #define I2S_MODE BIT(30) #define VOL_CTRL0 0x04 #define GAIN_H 31 #define GAIN_L 23 #define VOL_CTRL1 0x08 #define DAC_MONO 8 #define RAMP_RATE 10 #define VC_RAMP_MODE 12 #define MUTE_MODE 13 #define UNMUTE_MODE 14 #define DAC_SOFT_MUTE 15 #define DACR_VC 16 #define DACL_VC 24 #define LINEOUT_CFG 0x0c #define LORN_POL 0 #define LORP_POL 4 #define LOLN_POL 8 #define LOLP_POL 12 #define POWER_CFG 0x10 struct t9015 { struct regulator *avdd; }; static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_component *component = dai->component; unsigned int val; switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: val = I2S_MODE; break; case SND_SOC_DAIFMT_CBS_CFS: val = 0; break; default: return -EINVAL; } snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val); if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) && ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J)) return -EINVAL; return 0; } static const struct snd_soc_dai_ops t9015_dai_ops = { .set_fmt = t9015_dai_set_fmt, }; static struct snd_soc_dai_driver t9015_dai = { .name = "t9015-hifi", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_96000, .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_LE | SNDRV_PCM_FMTBIT_S24_LE), }, .ops = &t9015_dai_ops, }; static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0); static const char * const ramp_rate_txt[] = { "Fast", "Slow" }; static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE, ramp_rate_txt); static const char * const dacr_in_txt[] = { "Right", "Left" }; static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt); static const char * const dacl_in_txt[] = { "Left", "Right" }; static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt); static const char * const mono_txt[] = { "Stereo", "Mono"}; static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt); static const struct snd_kcontrol_new t9015_snd_controls[] = { /* Volume Controls */ SOC_ENUM("Playback Channel Mode", mono_enum), SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1), SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC, 0xff, 0, dac_vol_tlv), /* Ramp Controls */ SOC_ENUM("Ramp Rate", ramp_rate_enum), SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0), SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0), SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0), }; static const struct snd_kcontrol_new t9015_right_dac_mux = SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum); static const struct snd_kcontrol_new t9015_left_dac_mux = SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum); static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = { SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0, &t9015_right_dac_mux), SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0, &t9015_left_dac_mux), SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0), SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0), SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0, NULL, 0), SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0, NULL, 0), SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0, NULL, 0), SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0, NULL, 0), SND_SOC_DAPM_OUTPUT("LORN"), SND_SOC_DAPM_OUTPUT("LORP"), SND_SOC_DAPM_OUTPUT("LOLN"), SND_SOC_DAPM_OUTPUT("LOLP"), }; static const struct snd_soc_dapm_route t9015_dapm_routes[] = { { "Right IN", NULL, "Playback" }, { "Left IN", NULL, "Playback" }, { "Right DAC Sel", "Right", "Right IN" }, { "Right DAC Sel", "Left", "Left IN" }, { "Left DAC Sel", "Right", "Right IN" }, { "Left DAC Sel", "Left", "Left IN" }, { "Right DAC", NULL, "Right DAC Sel" }, { "Left DAC", NULL, "Left DAC Sel" }, { "Right- Driver", NULL, "Right DAC" }, { "Right+ Driver", NULL, "Right DAC" }, { "Left- Driver", NULL, "Left DAC" }, { "Left+ Driver", NULL, "Left DAC" }, { "LORN", NULL, "Right- Driver", }, { "LORP", NULL, "Right+ Driver", }, { "LOLN", NULL, "Left- Driver", }, { "LOLP", NULL, "Left+ Driver", }, }; static int t9015_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { struct t9015 *priv = snd_soc_component_get_drvdata(component); enum snd_soc_bias_level now = snd_soc_component_get_bias_level(component); int ret; switch (level) { case SND_SOC_BIAS_ON: snd_soc_component_update_bits(component, BLOCK_EN, BIAS_CURRENT_EN, BIAS_CURRENT_EN); break; case SND_SOC_BIAS_PREPARE: snd_soc_component_update_bits(component, BLOCK_EN, BIAS_CURRENT_EN, 0); break; case SND_SOC_BIAS_STANDBY: ret = regulator_enable(priv->avdd); if (ret) { dev_err(component->dev, "AVDD enable failed\n"); return ret; } if (now == SND_SOC_BIAS_OFF) { snd_soc_component_update_bits(component, BLOCK_EN, VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN); mdelay(200); snd_soc_component_update_bits(component, BLOCK_EN, VMID_GEN_FAST, 0); } break; case SND_SOC_BIAS_OFF: snd_soc_component_update_bits(component, BLOCK_EN, VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, 0); regulator_disable(priv->avdd); break; } return 0; } static const struct snd_soc_component_driver t9015_codec_driver = { .set_bias_level = t9015_set_bias_level, .controls = t9015_snd_controls, .num_controls = ARRAY_SIZE(t9015_snd_controls), .dapm_widgets = t9015_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets), .dapm_routes = t9015_dapm_routes, .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes), .suspend_bias_off = 1, .endianness = 1, .non_legacy_dai_naming = 1, }; static const struct regmap_config t9015_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .max_register = POWER_CFG, }; static int t9015_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct t9015 *priv; void __iomem *regs; struct regmap *regmap; struct clk *pclk; int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; platform_set_drvdata(pdev, priv); pclk = devm_clk_get_enabled(dev, "pclk"); if (IS_ERR(pclk)) return dev_err_probe(dev, PTR_ERR(pclk), "failed to get core clock\n"); priv->avdd = devm_regulator_get(dev, "AVDD"); if (IS_ERR(priv->avdd)) return dev_err_probe(dev, PTR_ERR(priv->avdd), "failed to AVDD\n"); ret = device_reset(dev); if (ret) { dev_err(dev, "reset failed\n"); return ret; } regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(regs)) { dev_err(dev, "register map failed\n"); return PTR_ERR(regs); } regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config); if (IS_ERR(regmap)) { dev_err(dev, "regmap init failed\n"); return PTR_ERR(regmap); } /* * Initialize output polarity: * ATM the output polarity is fixed but in the future it might useful * to add DT property to set this depending on the platform needs */ regmap_write(regmap, LINEOUT_CFG, 0x1111); return devm_snd_soc_register_component(dev, &t9015_codec_driver, &t9015_dai, 1); } static const struct of_device_id t9015_ids[] __maybe_unused = { { .compatible = "amlogic,t9015", }, { } }; MODULE_DEVICE_TABLE(of, t9015_ids); static struct platform_driver t9015_driver = { .driver = { .name = "t9015-codec", .of_match_table = of_match_ptr(t9015_ids), }, .probe = t9015_probe, }; module_platform_driver(t9015_driver); MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver"); MODULE_AUTHOR("Jerome Brunet "); MODULE_LICENSE("GPL");