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0006 #include <linux/clk.h>
0007 #include <linux/delay.h>
0008 #include <linux/module.h>
0009 #include <linux/regmap.h>
0010 #include <linux/regulator/consumer.h>
0011 #include <linux/reset.h>
0012 #include <sound/soc.h>
0013 #include <sound/tlv.h>
0014
0015 #define BLOCK_EN 0x00
0016 #define LORN_EN 0
0017 #define LORP_EN 1
0018 #define LOLN_EN 2
0019 #define LOLP_EN 3
0020 #define DACR_EN 4
0021 #define DACL_EN 5
0022 #define DACR_INV 20
0023 #define DACL_INV 21
0024 #define DACR_SRC 22
0025 #define DACL_SRC 23
0026 #define REFP_BUF_EN BIT(12)
0027 #define BIAS_CURRENT_EN BIT(13)
0028 #define VMID_GEN_FAST BIT(14)
0029 #define VMID_GEN_EN BIT(15)
0030 #define I2S_MODE BIT(30)
0031 #define VOL_CTRL0 0x04
0032 #define GAIN_H 31
0033 #define GAIN_L 23
0034 #define VOL_CTRL1 0x08
0035 #define DAC_MONO 8
0036 #define RAMP_RATE 10
0037 #define VC_RAMP_MODE 12
0038 #define MUTE_MODE 13
0039 #define UNMUTE_MODE 14
0040 #define DAC_SOFT_MUTE 15
0041 #define DACR_VC 16
0042 #define DACL_VC 24
0043 #define LINEOUT_CFG 0x0c
0044 #define LORN_POL 0
0045 #define LORP_POL 4
0046 #define LOLN_POL 8
0047 #define LOLP_POL 12
0048 #define POWER_CFG 0x10
0049
0050 struct t9015 {
0051 struct clk *pclk;
0052 struct regulator *avdd;
0053 };
0054
0055 static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
0056 {
0057 struct snd_soc_component *component = dai->component;
0058 unsigned int val;
0059
0060 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
0061 case SND_SOC_DAIFMT_CBM_CFM:
0062 val = I2S_MODE;
0063 break;
0064
0065 case SND_SOC_DAIFMT_CBS_CFS:
0066 val = 0;
0067 break;
0068
0069 default:
0070 return -EINVAL;
0071 }
0072
0073 snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val);
0074
0075 if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) &&
0076 ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J))
0077 return -EINVAL;
0078
0079 return 0;
0080 }
0081
0082 static const struct snd_soc_dai_ops t9015_dai_ops = {
0083 .set_fmt = t9015_dai_set_fmt,
0084 };
0085
0086 static struct snd_soc_dai_driver t9015_dai = {
0087 .name = "t9015-hifi",
0088 .playback = {
0089 .stream_name = "Playback",
0090 .channels_min = 1,
0091 .channels_max = 2,
0092 .rates = SNDRV_PCM_RATE_8000_96000,
0093 .formats = (SNDRV_PCM_FMTBIT_S8 |
0094 SNDRV_PCM_FMTBIT_S16_LE |
0095 SNDRV_PCM_FMTBIT_S20_LE |
0096 SNDRV_PCM_FMTBIT_S24_LE),
0097 },
0098 .ops = &t9015_dai_ops,
0099 };
0100
0101 static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0);
0102
0103 static const char * const ramp_rate_txt[] = { "Fast", "Slow" };
0104 static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE,
0105 ramp_rate_txt);
0106
0107 static const char * const dacr_in_txt[] = { "Right", "Left" };
0108 static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt);
0109
0110 static const char * const dacl_in_txt[] = { "Left", "Right" };
0111 static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt);
0112
0113 static const char * const mono_txt[] = { "Stereo", "Mono"};
0114 static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt);
0115
0116 static const struct snd_kcontrol_new t9015_snd_controls[] = {
0117
0118 SOC_ENUM("Playback Channel Mode", mono_enum),
0119 SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1),
0120 SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC,
0121 0xff, 0, dac_vol_tlv),
0122
0123
0124 SOC_ENUM("Ramp Rate", ramp_rate_enum),
0125 SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0),
0126 SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0),
0127 SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0),
0128 };
0129
0130 static const struct snd_kcontrol_new t9015_right_dac_mux =
0131 SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum);
0132 static const struct snd_kcontrol_new t9015_left_dac_mux =
0133 SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum);
0134
0135 static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = {
0136 SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0),
0137 SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0),
0138 SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0,
0139 &t9015_right_dac_mux),
0140 SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0,
0141 &t9015_left_dac_mux),
0142 SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0),
0143 SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0),
0144 SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0,
0145 NULL, 0),
0146 SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0,
0147 NULL, 0),
0148 SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0,
0149 NULL, 0),
0150 SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0,
0151 NULL, 0),
0152 SND_SOC_DAPM_OUTPUT("LORN"),
0153 SND_SOC_DAPM_OUTPUT("LORP"),
0154 SND_SOC_DAPM_OUTPUT("LOLN"),
0155 SND_SOC_DAPM_OUTPUT("LOLP"),
0156 };
0157
0158 static const struct snd_soc_dapm_route t9015_dapm_routes[] = {
0159 { "Right IN", NULL, "Playback" },
0160 { "Left IN", NULL, "Playback" },
0161 { "Right DAC Sel", "Right", "Right IN" },
0162 { "Right DAC Sel", "Left", "Left IN" },
0163 { "Left DAC Sel", "Right", "Right IN" },
0164 { "Left DAC Sel", "Left", "Left IN" },
0165 { "Right DAC", NULL, "Right DAC Sel" },
0166 { "Left DAC", NULL, "Left DAC Sel" },
0167 { "Right- Driver", NULL, "Right DAC" },
0168 { "Right+ Driver", NULL, "Right DAC" },
0169 { "Left- Driver", NULL, "Left DAC" },
0170 { "Left+ Driver", NULL, "Left DAC" },
0171 { "LORN", NULL, "Right- Driver", },
0172 { "LORP", NULL, "Right+ Driver", },
0173 { "LOLN", NULL, "Left- Driver", },
0174 { "LOLP", NULL, "Left+ Driver", },
0175 };
0176
0177 static int t9015_set_bias_level(struct snd_soc_component *component,
0178 enum snd_soc_bias_level level)
0179 {
0180 struct t9015 *priv = snd_soc_component_get_drvdata(component);
0181 enum snd_soc_bias_level now =
0182 snd_soc_component_get_bias_level(component);
0183 int ret;
0184
0185 switch (level) {
0186 case SND_SOC_BIAS_ON:
0187 snd_soc_component_update_bits(component, BLOCK_EN,
0188 BIAS_CURRENT_EN,
0189 BIAS_CURRENT_EN);
0190 break;
0191 case SND_SOC_BIAS_PREPARE:
0192 snd_soc_component_update_bits(component, BLOCK_EN,
0193 BIAS_CURRENT_EN,
0194 0);
0195 break;
0196 case SND_SOC_BIAS_STANDBY:
0197 ret = regulator_enable(priv->avdd);
0198 if (ret) {
0199 dev_err(component->dev, "AVDD enable failed\n");
0200 return ret;
0201 }
0202
0203 if (now == SND_SOC_BIAS_OFF) {
0204 snd_soc_component_update_bits(component, BLOCK_EN,
0205 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,
0206 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN);
0207
0208 mdelay(200);
0209 snd_soc_component_update_bits(component, BLOCK_EN,
0210 VMID_GEN_FAST,
0211 0);
0212 }
0213
0214 break;
0215 case SND_SOC_BIAS_OFF:
0216 snd_soc_component_update_bits(component, BLOCK_EN,
0217 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,
0218 0);
0219
0220 regulator_disable(priv->avdd);
0221 break;
0222 }
0223
0224 return 0;
0225 }
0226
0227 static const struct snd_soc_component_driver t9015_codec_driver = {
0228 .set_bias_level = t9015_set_bias_level,
0229 .controls = t9015_snd_controls,
0230 .num_controls = ARRAY_SIZE(t9015_snd_controls),
0231 .dapm_widgets = t9015_dapm_widgets,
0232 .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets),
0233 .dapm_routes = t9015_dapm_routes,
0234 .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes),
0235 .suspend_bias_off = 1,
0236 .endianness = 1,
0237 };
0238
0239 static const struct regmap_config t9015_regmap_config = {
0240 .reg_bits = 32,
0241 .reg_stride = 4,
0242 .val_bits = 32,
0243 .max_register = POWER_CFG,
0244 };
0245
0246 static int t9015_probe(struct platform_device *pdev)
0247 {
0248 struct device *dev = &pdev->dev;
0249 struct t9015 *priv;
0250 void __iomem *regs;
0251 struct regmap *regmap;
0252 int ret;
0253
0254 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
0255 if (!priv)
0256 return -ENOMEM;
0257 platform_set_drvdata(pdev, priv);
0258
0259 priv->pclk = devm_clk_get(dev, "pclk");
0260 if (IS_ERR(priv->pclk))
0261 return dev_err_probe(dev, PTR_ERR(priv->pclk), "failed to get core clock\n");
0262
0263 priv->avdd = devm_regulator_get(dev, "AVDD");
0264 if (IS_ERR(priv->avdd))
0265 return dev_err_probe(dev, PTR_ERR(priv->avdd), "failed to AVDD\n");
0266
0267 ret = clk_prepare_enable(priv->pclk);
0268 if (ret) {
0269 dev_err(dev, "core clock enable failed\n");
0270 return ret;
0271 }
0272
0273 ret = devm_add_action_or_reset(dev,
0274 (void(*)(void *))clk_disable_unprepare,
0275 priv->pclk);
0276 if (ret)
0277 return ret;
0278
0279 ret = device_reset(dev);
0280 if (ret) {
0281 dev_err(dev, "reset failed\n");
0282 return ret;
0283 }
0284
0285 regs = devm_platform_ioremap_resource(pdev, 0);
0286 if (IS_ERR(regs)) {
0287 dev_err(dev, "register map failed\n");
0288 return PTR_ERR(regs);
0289 }
0290
0291 regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config);
0292 if (IS_ERR(regmap)) {
0293 dev_err(dev, "regmap init failed\n");
0294 return PTR_ERR(regmap);
0295 }
0296
0297
0298
0299
0300
0301
0302 regmap_write(regmap, LINEOUT_CFG, 0x1111);
0303
0304 return devm_snd_soc_register_component(dev, &t9015_codec_driver,
0305 &t9015_dai, 1);
0306 }
0307
0308 static const struct of_device_id t9015_ids[] __maybe_unused = {
0309 { .compatible = "amlogic,t9015", },
0310 { }
0311 };
0312 MODULE_DEVICE_TABLE(of, t9015_ids);
0313
0314 static struct platform_driver t9015_driver = {
0315 .driver = {
0316 .name = "t9015-codec",
0317 .of_match_table = of_match_ptr(t9015_ids),
0318 },
0319 .probe = t9015_probe,
0320 };
0321
0322 module_platform_driver(t9015_driver);
0323
0324 MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver");
0325 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
0326 MODULE_LICENSE("GPL");
