1 // SPDX-License-Identifier: GPL-2.0 2 // 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 0x00 16 #define LORN_EN 0 17 #define LORP_EN 1 18 #define LOLN_EN 2 19 #define LOLP_EN 3 20 #define DACR_EN 4 21 #define DACL_EN 5 22 #define DACR_INV 20 23 #define DACL_INV 21 24 #define DACR_SRC 22 25 #define DACL_SRC 23 26 #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 0x04 32 #define GAIN_H 31 33 #define GAIN_L 23 34 #define VOL_CTRL1 0x08 35 #define DAC_MONO 8 36 #define RAMP_RATE 10 37 #define VC_RAMP_MODE 12 38 #define MUTE_MODE 13 39 #define UNMUTE_MODE 14 40 #define DAC_SOFT_MUTE 15 41 #define DACR_VC 16 42 #define DACL_VC 24 43 #define LINEOUT_CFG 0x0c 44 #define LORN_POL 0 45 #define LORP_POL 4 46 #define LOLN_POL 8 47 #define LOLP_POL 12 48 #define POWER_CFG 0x10 49 50 struct t9015 { 51 struct clk *pclk; 52 struct regulator *avdd; 53 }; 54 55 static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 56 { 57 struct snd_soc_component *component = dai->component; 58 unsigned int val; 59 60 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 61 case SND_SOC_DAIFMT_CBM_CFM: 62 val = I2S_MODE; 63 break; 64 65 case SND_SOC_DAIFMT_CBS_CFS: 66 val = 0; 67 break; 68 69 default: 70 return -EINVAL; 71 } 72 73 snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val); 74 75 if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) && 76 ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J)) 77 return -EINVAL; 78 79 return 0; 80 } 81 82 static const struct snd_soc_dai_ops t9015_dai_ops = { 83 .set_fmt = t9015_dai_set_fmt, 84 }; 85 86 static struct snd_soc_dai_driver t9015_dai = { 87 .name = "t9015-hifi", 88 .playback = { 89 .stream_name = "Playback", 90 .channels_min = 1, 91 .channels_max = 2, 92 .rates = SNDRV_PCM_RATE_8000_96000, 93 .formats = (SNDRV_PCM_FMTBIT_S8 | 94 SNDRV_PCM_FMTBIT_S16_LE | 95 SNDRV_PCM_FMTBIT_S20_LE | 96 SNDRV_PCM_FMTBIT_S24_LE), 97 }, 98 .ops = &t9015_dai_ops, 99 }; 100 101 static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0); 102 103 static const char * const ramp_rate_txt[] = { "Fast", "Slow" }; 104 static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE, 105 ramp_rate_txt); 106 107 static const char * const dacr_in_txt[] = { "Right", "Left" }; 108 static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt); 109 110 static const char * const dacl_in_txt[] = { "Left", "Right" }; 111 static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt); 112 113 static const char * const mono_txt[] = { "Stereo", "Mono"}; 114 static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt); 115 116 static const struct snd_kcontrol_new t9015_snd_controls[] = { 117 /* Volume Controls */ 118 SOC_ENUM("Playback Channel Mode", mono_enum), 119 SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1), 120 SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC, 121 0xff, 0, dac_vol_tlv), 122 123 /* Ramp Controls */ 124 SOC_ENUM("Ramp Rate", ramp_rate_enum), 125 SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0), 126 SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0), 127 SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0), 128 }; 129 130 static const struct snd_kcontrol_new t9015_right_dac_mux = 131 SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum); 132 static const struct snd_kcontrol_new t9015_left_dac_mux = 133 SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum); 134 135 static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = { 136 SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0), 137 SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0), 138 SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0, 139 &t9015_right_dac_mux), 140 SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0, 141 &t9015_left_dac_mux), 142 SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0), 143 SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0), 144 SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0, 145 NULL, 0), 146 SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0, 147 NULL, 0), 148 SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0, 149 NULL, 0), 150 SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0, 151 NULL, 0), 152 SND_SOC_DAPM_OUTPUT("LORN"), 153 SND_SOC_DAPM_OUTPUT("LORP"), 154 SND_SOC_DAPM_OUTPUT("LOLN"), 155 SND_SOC_DAPM_OUTPUT("LOLP"), 156 }; 157 158 static const struct snd_soc_dapm_route t9015_dapm_routes[] = { 159 { "Right IN", NULL, "Playback" }, 160 { "Left IN", NULL, "Playback" }, 161 { "Right DAC Sel", "Right", "Right IN" }, 162 { "Right DAC Sel", "Left", "Left IN" }, 163 { "Left DAC Sel", "Right", "Right IN" }, 164 { "Left DAC Sel", "Left", "Left IN" }, 165 { "Right DAC", NULL, "Right DAC Sel" }, 166 { "Left DAC", NULL, "Left DAC Sel" }, 167 { "Right- Driver", NULL, "Right DAC" }, 168 { "Right+ Driver", NULL, "Right DAC" }, 169 { "Left- Driver", NULL, "Left DAC" }, 170 { "Left+ Driver", NULL, "Left DAC" }, 171 { "LORN", NULL, "Right- Driver", }, 172 { "LORP", NULL, "Right+ Driver", }, 173 { "LOLN", NULL, "Left- Driver", }, 174 { "LOLP", NULL, "Left+ Driver", }, 175 }; 176 177 static int t9015_set_bias_level(struct snd_soc_component *component, 178 enum snd_soc_bias_level level) 179 { 180 struct t9015 *priv = snd_soc_component_get_drvdata(component); 181 enum snd_soc_bias_level now = 182 snd_soc_component_get_bias_level(component); 183 int ret; 184 185 switch (level) { 186 case SND_SOC_BIAS_ON: 187 snd_soc_component_update_bits(component, BLOCK_EN, 188 BIAS_CURRENT_EN, 189 BIAS_CURRENT_EN); 190 break; 191 case SND_SOC_BIAS_PREPARE: 192 snd_soc_component_update_bits(component, BLOCK_EN, 193 BIAS_CURRENT_EN, 194 0); 195 break; 196 case SND_SOC_BIAS_STANDBY: 197 ret = regulator_enable(priv->avdd); 198 if (ret) { 199 dev_err(component->dev, "AVDD enable failed\n"); 200 return ret; 201 } 202 203 if (now == SND_SOC_BIAS_OFF) { 204 snd_soc_component_update_bits(component, BLOCK_EN, 205 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, 206 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN); 207 208 mdelay(200); 209 snd_soc_component_update_bits(component, BLOCK_EN, 210 VMID_GEN_FAST, 211 0); 212 } 213 214 break; 215 case SND_SOC_BIAS_OFF: 216 snd_soc_component_update_bits(component, BLOCK_EN, 217 VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, 218 0); 219 220 regulator_disable(priv->avdd); 221 break; 222 } 223 224 return 0; 225 } 226 227 static const struct snd_soc_component_driver t9015_codec_driver = { 228 .set_bias_level = t9015_set_bias_level, 229 .controls = t9015_snd_controls, 230 .num_controls = ARRAY_SIZE(t9015_snd_controls), 231 .dapm_widgets = t9015_dapm_widgets, 232 .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets), 233 .dapm_routes = t9015_dapm_routes, 234 .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes), 235 .suspend_bias_off = 1, 236 .endianness = 1, 237 .non_legacy_dai_naming = 1, 238 }; 239 240 static const struct regmap_config t9015_regmap_config = { 241 .reg_bits = 32, 242 .reg_stride = 4, 243 .val_bits = 32, 244 .max_register = POWER_CFG, 245 }; 246 247 static int t9015_probe(struct platform_device *pdev) 248 { 249 struct device *dev = &pdev->dev; 250 struct t9015 *priv; 251 void __iomem *regs; 252 struct regmap *regmap; 253 int ret; 254 255 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 256 if (!priv) 257 return -ENOMEM; 258 platform_set_drvdata(pdev, priv); 259 260 priv->pclk = devm_clk_get(dev, "pclk"); 261 if (IS_ERR(priv->pclk)) { 262 if (PTR_ERR(priv->pclk) != -EPROBE_DEFER) 263 dev_err(dev, "failed to get core clock\n"); 264 return PTR_ERR(priv->pclk); 265 } 266 267 priv->avdd = devm_regulator_get(dev, "AVDD"); 268 if (IS_ERR(priv->avdd)) { 269 if (PTR_ERR(priv->avdd) != -EPROBE_DEFER) 270 dev_err(dev, "failed to AVDD\n"); 271 return PTR_ERR(priv->avdd); 272 } 273 274 ret = clk_prepare_enable(priv->pclk); 275 if (ret) { 276 dev_err(dev, "core clock enable failed\n"); 277 return ret; 278 } 279 280 ret = devm_add_action_or_reset(dev, 281 (void(*)(void *))clk_disable_unprepare, 282 priv->pclk); 283 if (ret) 284 return ret; 285 286 ret = device_reset(dev); 287 if (ret) { 288 dev_err(dev, "reset failed\n"); 289 return ret; 290 } 291 292 regs = devm_platform_ioremap_resource(pdev, 0); 293 if (IS_ERR(regs)) { 294 dev_err(dev, "register map failed\n"); 295 return PTR_ERR(regs); 296 } 297 298 regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config); 299 if (IS_ERR(regmap)) { 300 dev_err(dev, "regmap init failed\n"); 301 return PTR_ERR(regmap); 302 } 303 304 /* 305 * Initialize output polarity: 306 * ATM the output polarity is fixed but in the future it might useful 307 * to add DT property to set this depending on the platform needs 308 */ 309 regmap_write(regmap, LINEOUT_CFG, 0x1111); 310 311 return devm_snd_soc_register_component(dev, &t9015_codec_driver, 312 &t9015_dai, 1); 313 } 314 315 static const struct of_device_id t9015_ids[] = { 316 { .compatible = "amlogic,t9015", }, 317 { } 318 }; 319 MODULE_DEVICE_TABLE(of, t9015_ids); 320 321 static struct platform_driver t9015_driver = { 322 .driver = { 323 .name = "t9015-codec", 324 .of_match_table = of_match_ptr(t9015_ids), 325 }, 326 .probe = t9015_probe, 327 }; 328 329 module_platform_driver(t9015_driver); 330 331 MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver"); 332 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 333 MODULE_LICENSE("GPL"); 334