1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * omap-abe-twl6040.c -- SoC audio for TI OMAP based boards with ABE and 4 * twl6040 codec 5 * 6 * Author: Misael Lopez Cruz <misael.lopez@ti.com> 7 */ 8 9 #include <linux/clk.h> 10 #include <linux/platform_device.h> 11 #include <linux/mfd/twl6040.h> 12 #include <linux/module.h> 13 #include <linux/of.h> 14 15 #include <sound/core.h> 16 #include <sound/pcm.h> 17 #include <sound/soc.h> 18 #include <sound/jack.h> 19 20 #include "omap-dmic.h" 21 #include "omap-mcpdm.h" 22 #include "../codecs/twl6040.h" 23 24 struct abe_twl6040 { 25 struct snd_soc_card card; 26 struct snd_soc_dai_link dai_links[2]; 27 int jack_detection; /* board can detect jack events */ 28 int mclk_freq; /* MCLK frequency speed for twl6040 */ 29 }; 30 31 static struct platform_device *dmic_codec_dev; 32 33 static int omap_abe_hw_params(struct snd_pcm_substream *substream, 34 struct snd_pcm_hw_params *params) 35 { 36 struct snd_soc_pcm_runtime *rtd = substream->private_data; 37 struct snd_soc_dai *codec_dai = rtd->codec_dai; 38 struct snd_soc_card *card = rtd->card; 39 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card); 40 int clk_id, freq; 41 int ret; 42 43 clk_id = twl6040_get_clk_id(codec_dai->component); 44 if (clk_id == TWL6040_SYSCLK_SEL_HPPLL) 45 freq = priv->mclk_freq; 46 else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL) 47 freq = 32768; 48 else 49 return -EINVAL; 50 51 /* set the codec mclk */ 52 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq, 53 SND_SOC_CLOCK_IN); 54 if (ret) { 55 printk(KERN_ERR "can't set codec system clock\n"); 56 return ret; 57 } 58 return ret; 59 } 60 61 static const struct snd_soc_ops omap_abe_ops = { 62 .hw_params = omap_abe_hw_params, 63 }; 64 65 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream, 66 struct snd_pcm_hw_params *params) 67 { 68 struct snd_soc_pcm_runtime *rtd = substream->private_data; 69 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 70 int ret = 0; 71 72 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS, 73 19200000, SND_SOC_CLOCK_IN); 74 if (ret < 0) { 75 printk(KERN_ERR "can't set DMIC cpu system clock\n"); 76 return ret; 77 } 78 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000, 79 SND_SOC_CLOCK_OUT); 80 if (ret < 0) { 81 printk(KERN_ERR "can't set DMIC output clock\n"); 82 return ret; 83 } 84 return 0; 85 } 86 87 static struct snd_soc_ops omap_abe_dmic_ops = { 88 .hw_params = omap_abe_dmic_hw_params, 89 }; 90 91 /* Headset jack */ 92 static struct snd_soc_jack hs_jack; 93 94 /*Headset jack detection DAPM pins */ 95 static struct snd_soc_jack_pin hs_jack_pins[] = { 96 { 97 .pin = "Headset Mic", 98 .mask = SND_JACK_MICROPHONE, 99 }, 100 { 101 .pin = "Headset Stereophone", 102 .mask = SND_JACK_HEADPHONE, 103 }, 104 }; 105 106 /* SDP4430 machine DAPM */ 107 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = { 108 /* Outputs */ 109 SND_SOC_DAPM_HP("Headset Stereophone", NULL), 110 SND_SOC_DAPM_SPK("Earphone Spk", NULL), 111 SND_SOC_DAPM_SPK("Ext Spk", NULL), 112 SND_SOC_DAPM_LINE("Line Out", NULL), 113 SND_SOC_DAPM_SPK("Vibrator", NULL), 114 115 /* Inputs */ 116 SND_SOC_DAPM_MIC("Headset Mic", NULL), 117 SND_SOC_DAPM_MIC("Main Handset Mic", NULL), 118 SND_SOC_DAPM_MIC("Sub Handset Mic", NULL), 119 SND_SOC_DAPM_LINE("Line In", NULL), 120 121 /* Digital microphones */ 122 SND_SOC_DAPM_MIC("Digital Mic", NULL), 123 }; 124 125 static const struct snd_soc_dapm_route audio_map[] = { 126 /* Routings for outputs */ 127 {"Headset Stereophone", NULL, "HSOL"}, 128 {"Headset Stereophone", NULL, "HSOR"}, 129 130 {"Earphone Spk", NULL, "EP"}, 131 132 {"Ext Spk", NULL, "HFL"}, 133 {"Ext Spk", NULL, "HFR"}, 134 135 {"Line Out", NULL, "AUXL"}, 136 {"Line Out", NULL, "AUXR"}, 137 138 {"Vibrator", NULL, "VIBRAL"}, 139 {"Vibrator", NULL, "VIBRAR"}, 140 141 /* Routings for inputs */ 142 {"HSMIC", NULL, "Headset Mic"}, 143 {"Headset Mic", NULL, "Headset Mic Bias"}, 144 145 {"MAINMIC", NULL, "Main Handset Mic"}, 146 {"Main Handset Mic", NULL, "Main Mic Bias"}, 147 148 {"SUBMIC", NULL, "Sub Handset Mic"}, 149 {"Sub Handset Mic", NULL, "Main Mic Bias"}, 150 151 {"AFML", NULL, "Line In"}, 152 {"AFMR", NULL, "Line In"}, 153 }; 154 155 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd) 156 { 157 struct snd_soc_component *component = rtd->codec_dai->component; 158 struct snd_soc_card *card = rtd->card; 159 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card); 160 int hs_trim; 161 int ret = 0; 162 163 /* 164 * Configure McPDM offset cancellation based on the HSOTRIM value from 165 * twl6040. 166 */ 167 hs_trim = twl6040_get_trim_value(component, TWL6040_TRIM_HSOTRIM); 168 omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim), 169 TWL6040_HSF_TRIM_RIGHT(hs_trim)); 170 171 /* Headset jack detection only if it is supported */ 172 if (priv->jack_detection) { 173 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", 174 SND_JACK_HEADSET, &hs_jack, 175 hs_jack_pins, 176 ARRAY_SIZE(hs_jack_pins)); 177 if (ret) 178 return ret; 179 180 twl6040_hs_jack_detect(component, &hs_jack, SND_JACK_HEADSET); 181 } 182 183 return 0; 184 } 185 186 static const struct snd_soc_dapm_route dmic_audio_map[] = { 187 {"DMic", NULL, "Digital Mic"}, 188 {"Digital Mic", NULL, "Digital Mic1 Bias"}, 189 }; 190 191 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd) 192 { 193 struct snd_soc_dapm_context *dapm = &rtd->card->dapm; 194 195 return snd_soc_dapm_add_routes(dapm, dmic_audio_map, 196 ARRAY_SIZE(dmic_audio_map)); 197 } 198 199 static int omap_abe_probe(struct platform_device *pdev) 200 { 201 struct device_node *node = pdev->dev.of_node; 202 struct snd_soc_card *card; 203 struct device_node *dai_node; 204 struct abe_twl6040 *priv; 205 int num_links = 0; 206 int ret = 0; 207 208 if (!node) { 209 dev_err(&pdev->dev, "of node is missing.\n"); 210 return -ENODEV; 211 } 212 213 priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL); 214 if (priv == NULL) 215 return -ENOMEM; 216 217 card = &priv->card; 218 card->dev = &pdev->dev; 219 card->owner = THIS_MODULE; 220 card->dapm_widgets = twl6040_dapm_widgets; 221 card->num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets); 222 card->dapm_routes = audio_map; 223 card->num_dapm_routes = ARRAY_SIZE(audio_map); 224 225 if (snd_soc_of_parse_card_name(card, "ti,model")) { 226 dev_err(&pdev->dev, "Card name is not provided\n"); 227 return -ENODEV; 228 } 229 230 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); 231 if (ret) { 232 dev_err(&pdev->dev, "Error while parsing DAPM routing\n"); 233 return ret; 234 } 235 236 dai_node = of_parse_phandle(node, "ti,mcpdm", 0); 237 if (!dai_node) { 238 dev_err(&pdev->dev, "McPDM node is not provided\n"); 239 return -EINVAL; 240 } 241 242 priv->dai_links[0].name = "DMIC"; 243 priv->dai_links[0].stream_name = "TWL6040"; 244 priv->dai_links[0].cpu_of_node = dai_node; 245 priv->dai_links[0].platform_of_node = dai_node; 246 priv->dai_links[0].codec_dai_name = "twl6040-legacy"; 247 priv->dai_links[0].codec_name = "twl6040-codec"; 248 priv->dai_links[0].init = omap_abe_twl6040_init; 249 priv->dai_links[0].ops = &omap_abe_ops; 250 251 dai_node = of_parse_phandle(node, "ti,dmic", 0); 252 if (dai_node) { 253 num_links = 2; 254 priv->dai_links[1].name = "TWL6040"; 255 priv->dai_links[1].stream_name = "DMIC Capture"; 256 priv->dai_links[1].cpu_of_node = dai_node; 257 priv->dai_links[1].platform_of_node = dai_node; 258 priv->dai_links[1].codec_dai_name = "dmic-hifi"; 259 priv->dai_links[1].codec_name = "dmic-codec"; 260 priv->dai_links[1].init = omap_abe_dmic_init; 261 priv->dai_links[1].ops = &omap_abe_dmic_ops; 262 } else { 263 num_links = 1; 264 } 265 266 priv->jack_detection = of_property_read_bool(node, "ti,jack-detection"); 267 of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq); 268 if (!priv->mclk_freq) { 269 dev_err(&pdev->dev, "MCLK frequency not provided\n"); 270 return -EINVAL; 271 } 272 273 card->fully_routed = 1; 274 275 if (!priv->mclk_freq) { 276 dev_err(&pdev->dev, "MCLK frequency missing\n"); 277 return -ENODEV; 278 } 279 280 card->dai_link = priv->dai_links; 281 card->num_links = num_links; 282 283 snd_soc_card_set_drvdata(card, priv); 284 285 ret = devm_snd_soc_register_card(&pdev->dev, card); 286 if (ret) 287 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n", 288 ret); 289 290 return ret; 291 } 292 293 static const struct of_device_id omap_abe_of_match[] = { 294 {.compatible = "ti,abe-twl6040", }, 295 { }, 296 }; 297 MODULE_DEVICE_TABLE(of, omap_abe_of_match); 298 299 static struct platform_driver omap_abe_driver = { 300 .driver = { 301 .name = "omap-abe-twl6040", 302 .pm = &snd_soc_pm_ops, 303 .of_match_table = omap_abe_of_match, 304 }, 305 .probe = omap_abe_probe, 306 }; 307 308 static int __init omap_abe_init(void) 309 { 310 int ret; 311 312 dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL, 313 0); 314 if (IS_ERR(dmic_codec_dev)) { 315 pr_err("%s: dmic-codec device registration failed\n", __func__); 316 return PTR_ERR(dmic_codec_dev); 317 } 318 319 ret = platform_driver_register(&omap_abe_driver); 320 if (ret) { 321 pr_err("%s: platform driver registration failed\n", __func__); 322 platform_device_unregister(dmic_codec_dev); 323 } 324 325 return ret; 326 } 327 module_init(omap_abe_init); 328 329 static void __exit omap_abe_exit(void) 330 { 331 platform_driver_unregister(&omap_abe_driver); 332 platform_device_unregister(dmic_codec_dev); 333 } 334 module_exit(omap_abe_exit); 335 336 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); 337 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec"); 338 MODULE_LICENSE("GPL"); 339 MODULE_ALIAS("platform:omap-abe-twl6040"); 340