1 /* 2 * Copyright (c) 2017 BayLibre, SAS. 3 * Author: Jerome Brunet <jbrunet@baylibre.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 16 * The full GNU General Public License is included in this distribution 17 * in the file called COPYING. 18 */ 19 20 #include <linux/of_platform.h> 21 #include <linux/module.h> 22 #include <sound/soc.h> 23 24 /* 25 * The everest 7134 is a very simple DA converter with no register 26 */ 27 28 struct es7134_clock_mode { 29 unsigned int rate_min; 30 unsigned int rate_max; 31 unsigned int *mclk_fs; 32 unsigned int mclk_fs_num; 33 }; 34 35 struct es7134_chip { 36 struct snd_soc_dai_driver *dai_drv; 37 const struct es7134_clock_mode *modes; 38 unsigned int mode_num; 39 const struct snd_soc_dapm_widget *extra_widgets; 40 unsigned int extra_widget_num; 41 const struct snd_soc_dapm_route *extra_routes; 42 unsigned int extra_route_num; 43 }; 44 45 struct es7134_data { 46 unsigned int mclk; 47 const struct es7134_chip *chip; 48 }; 49 50 static int es7134_check_mclk(struct snd_soc_dai *dai, 51 struct es7134_data *priv, 52 unsigned int rate) 53 { 54 unsigned int mfs = priv->mclk / rate; 55 int i, j; 56 57 for (i = 0; i < priv->chip->mode_num; i++) { 58 const struct es7134_clock_mode *mode = &priv->chip->modes[i]; 59 60 if (rate < mode->rate_min || rate > mode->rate_max) 61 continue; 62 63 for (j = 0; j < mode->mclk_fs_num; j++) { 64 if (mode->mclk_fs[j] == mfs) 65 return 0; 66 } 67 68 dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n", 69 mfs, rate); 70 return -EINVAL; 71 } 72 73 /* should not happen */ 74 dev_err(dai->dev, "unsupported rate: %u\n", rate); 75 return -EINVAL; 76 } 77 78 static int es7134_hw_params(struct snd_pcm_substream *substream, 79 struct snd_pcm_hw_params *params, 80 struct snd_soc_dai *dai) 81 { 82 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai); 83 84 /* mclk has not been provided, assume it is OK */ 85 if (!priv->mclk) 86 return 0; 87 88 return es7134_check_mclk(dai, priv, params_rate(params)); 89 } 90 91 static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id, 92 unsigned int freq, int dir) 93 { 94 struct es7134_data *priv = snd_soc_dai_get_drvdata(dai); 95 96 if (dir == SND_SOC_CLOCK_IN && clk_id == 0) { 97 priv->mclk = freq; 98 return 0; 99 } 100 101 return -ENOTSUPP; 102 } 103 104 static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 105 { 106 fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK | 107 SND_SOC_DAIFMT_MASTER_MASK); 108 109 if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 110 SND_SOC_DAIFMT_CBS_CFS)) { 111 dev_err(codec_dai->dev, "Invalid DAI format\n"); 112 return -EINVAL; 113 } 114 115 return 0; 116 } 117 118 static int es7134_component_probe(struct snd_soc_component *c) 119 { 120 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c); 121 struct es7134_data *priv = snd_soc_component_get_drvdata(c); 122 const struct es7134_chip *chip = priv->chip; 123 int ret; 124 125 if (chip->extra_widget_num) { 126 ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets, 127 chip->extra_widget_num); 128 if (ret) { 129 dev_err(c->dev, "failed to add extra widgets\n"); 130 return ret; 131 } 132 } 133 134 if (chip->extra_route_num) { 135 ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes, 136 chip->extra_route_num); 137 if (ret) { 138 dev_err(c->dev, "failed to add extra routes\n"); 139 return ret; 140 } 141 } 142 143 return 0; 144 } 145 146 static const struct snd_soc_dai_ops es7134_dai_ops = { 147 .set_fmt = es7134_set_fmt, 148 .hw_params = es7134_hw_params, 149 .set_sysclk = es7134_set_sysclk, 150 }; 151 152 static struct snd_soc_dai_driver es7134_dai = { 153 .name = "es7134-hifi", 154 .playback = { 155 .stream_name = "Playback", 156 .channels_min = 2, 157 .channels_max = 2, 158 .rates = (SNDRV_PCM_RATE_8000_48000 | 159 SNDRV_PCM_RATE_88200 | 160 SNDRV_PCM_RATE_96000 | 161 SNDRV_PCM_RATE_176400 | 162 SNDRV_PCM_RATE_192000), 163 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 164 SNDRV_PCM_FMTBIT_S18_3LE | 165 SNDRV_PCM_FMTBIT_S20_3LE | 166 SNDRV_PCM_FMTBIT_S24_3LE | 167 SNDRV_PCM_FMTBIT_S24_LE), 168 }, 169 .ops = &es7134_dai_ops, 170 }; 171 172 static const struct es7134_clock_mode es7134_modes[] = { 173 { 174 /* Single speed mode */ 175 .rate_min = 8000, 176 .rate_max = 50000, 177 .mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 }, 178 .mclk_fs_num = 5, 179 }, { 180 /* Double speed mode */ 181 .rate_min = 84000, 182 .rate_max = 100000, 183 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 }, 184 .mclk_fs_num = 5, 185 }, { 186 /* Quad speed mode */ 187 .rate_min = 167000, 188 .rate_max = 192000, 189 .mclk_fs = (unsigned int[]) { 128, 192, 256 }, 190 .mclk_fs_num = 3, 191 }, 192 }; 193 194 /* Digital I/O are also supplied by VDD on the es7134 */ 195 static const struct snd_soc_dapm_route es7134_extra_routes[] = { 196 { "Playback", NULL, "VDD", } 197 }; 198 199 static const struct es7134_chip es7134_chip = { 200 .dai_drv = &es7134_dai, 201 .modes = es7134_modes, 202 .mode_num = ARRAY_SIZE(es7134_modes), 203 .extra_routes = es7134_extra_routes, 204 .extra_route_num = ARRAY_SIZE(es7134_extra_routes), 205 }; 206 207 static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = { 208 SND_SOC_DAPM_OUTPUT("AOUTL"), 209 SND_SOC_DAPM_OUTPUT("AOUTR"), 210 SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), 211 SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0), 212 }; 213 214 static const struct snd_soc_dapm_route es7134_dapm_routes[] = { 215 { "AOUTL", NULL, "DAC" }, 216 { "AOUTR", NULL, "DAC" }, 217 { "DAC", NULL, "VDD" }, 218 }; 219 220 static const struct snd_soc_component_driver es7134_component_driver = { 221 .probe = es7134_component_probe, 222 .dapm_widgets = es7134_dapm_widgets, 223 .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets), 224 .dapm_routes = es7134_dapm_routes, 225 .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes), 226 .idle_bias_on = 1, 227 .use_pmdown_time = 1, 228 .endianness = 1, 229 .non_legacy_dai_naming = 1, 230 }; 231 232 static struct snd_soc_dai_driver es7154_dai = { 233 .name = "es7154-hifi", 234 .playback = { 235 .stream_name = "Playback", 236 .channels_min = 2, 237 .channels_max = 2, 238 .rates = (SNDRV_PCM_RATE_8000_48000 | 239 SNDRV_PCM_RATE_88200 | 240 SNDRV_PCM_RATE_96000), 241 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 242 SNDRV_PCM_FMTBIT_S18_3LE | 243 SNDRV_PCM_FMTBIT_S20_3LE | 244 SNDRV_PCM_FMTBIT_S24_3LE | 245 SNDRV_PCM_FMTBIT_S24_LE), 246 }, 247 .ops = &es7134_dai_ops, 248 }; 249 250 static const struct es7134_clock_mode es7154_modes[] = { 251 { 252 /* Single speed mode */ 253 .rate_min = 8000, 254 .rate_max = 50000, 255 .mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256, 256 384, 512, 768, 1024 }, 257 .mclk_fs_num = 9, 258 }, { 259 /* Double speed mode */ 260 .rate_min = 84000, 261 .rate_max = 100000, 262 .mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512, 263 768, 1024}, 264 .mclk_fs_num = 7, 265 } 266 }; 267 268 /* Es7154 has a separate supply for digital I/O */ 269 static const struct snd_soc_dapm_widget es7154_extra_widgets[] = { 270 SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0), 271 }; 272 273 static const struct snd_soc_dapm_route es7154_extra_routes[] = { 274 { "Playback", NULL, "PVDD", } 275 }; 276 277 static const struct es7134_chip es7154_chip = { 278 .dai_drv = &es7154_dai, 279 .modes = es7154_modes, 280 .mode_num = ARRAY_SIZE(es7154_modes), 281 .extra_routes = es7154_extra_routes, 282 .extra_route_num = ARRAY_SIZE(es7154_extra_routes), 283 .extra_widgets = es7154_extra_widgets, 284 .extra_widget_num = ARRAY_SIZE(es7154_extra_widgets), 285 }; 286 287 static int es7134_probe(struct platform_device *pdev) 288 { 289 struct device *dev = &pdev->dev; 290 struct es7134_data *priv; 291 292 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 293 if (!priv) 294 return -ENOMEM; 295 platform_set_drvdata(pdev, priv); 296 297 priv->chip = of_device_get_match_data(dev); 298 if (!priv->chip) { 299 dev_err(dev, "failed to match device\n"); 300 return -ENODEV; 301 } 302 303 return devm_snd_soc_register_component(&pdev->dev, 304 &es7134_component_driver, 305 priv->chip->dai_drv, 1); 306 } 307 308 #ifdef CONFIG_OF 309 static const struct of_device_id es7134_ids[] = { 310 { .compatible = "everest,es7134", .data = &es7134_chip }, 311 { .compatible = "everest,es7144", .data = &es7134_chip }, 312 { .compatible = "everest,es7154", .data = &es7154_chip }, 313 { } 314 }; 315 MODULE_DEVICE_TABLE(of, es7134_ids); 316 #endif 317 318 static struct platform_driver es7134_driver = { 319 .driver = { 320 .name = "es7134", 321 .of_match_table = of_match_ptr(es7134_ids), 322 }, 323 .probe = es7134_probe, 324 }; 325 326 module_platform_driver(es7134_driver); 327 328 MODULE_DESCRIPTION("ASoC ES7134 audio codec driver"); 329 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 330 MODULE_LICENSE("GPL"); 331