1 /* 2 * omap-abe-twl6040.c -- SoC audio for TI OMAP based boards with ABE and 3 * twl6040 codec 4 * 5 * Author: Misael Lopez Cruz <misael.lopez@ti.com> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * version 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 19 * 02110-1301 USA 20 * 21 */ 22 23 #include <linux/clk.h> 24 #include <linux/platform_device.h> 25 #include <linux/mfd/twl6040.h> 26 #include <linux/module.h> 27 #include <linux/of.h> 28 29 #include <sound/core.h> 30 #include <sound/pcm.h> 31 #include <sound/soc.h> 32 #include <sound/jack.h> 33 34 #include "omap-dmic.h" 35 #include "omap-mcpdm.h" 36 #include "../codecs/twl6040.h" 37 38 struct abe_twl6040 { 39 struct snd_soc_card card; 40 struct snd_soc_dai_link dai_links[2]; 41 int jack_detection; /* board can detect jack events */ 42 int mclk_freq; /* MCLK frequency speed for twl6040 */ 43 }; 44 45 static struct platform_device *dmic_codec_dev; 46 47 static int omap_abe_hw_params(struct snd_pcm_substream *substream, 48 struct snd_pcm_hw_params *params) 49 { 50 struct snd_soc_pcm_runtime *rtd = substream->private_data; 51 struct snd_soc_dai *codec_dai = rtd->codec_dai; 52 struct snd_soc_card *card = rtd->card; 53 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card); 54 int clk_id, freq; 55 int ret; 56 57 clk_id = twl6040_get_clk_id(codec_dai->component); 58 if (clk_id == TWL6040_SYSCLK_SEL_HPPLL) 59 freq = priv->mclk_freq; 60 else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL) 61 freq = 32768; 62 else 63 return -EINVAL; 64 65 /* set the codec mclk */ 66 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq, 67 SND_SOC_CLOCK_IN); 68 if (ret) { 69 printk(KERN_ERR "can't set codec system clock\n"); 70 return ret; 71 } 72 return ret; 73 } 74 75 static const struct snd_soc_ops omap_abe_ops = { 76 .hw_params = omap_abe_hw_params, 77 }; 78 79 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream, 80 struct snd_pcm_hw_params *params) 81 { 82 struct snd_soc_pcm_runtime *rtd = substream->private_data; 83 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 84 int ret = 0; 85 86 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS, 87 19200000, SND_SOC_CLOCK_IN); 88 if (ret < 0) { 89 printk(KERN_ERR "can't set DMIC cpu system clock\n"); 90 return ret; 91 } 92 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000, 93 SND_SOC_CLOCK_OUT); 94 if (ret < 0) { 95 printk(KERN_ERR "can't set DMIC output clock\n"); 96 return ret; 97 } 98 return 0; 99 } 100 101 static struct snd_soc_ops omap_abe_dmic_ops = { 102 .hw_params = omap_abe_dmic_hw_params, 103 }; 104 105 /* Headset jack */ 106 static struct snd_soc_jack hs_jack; 107 108 /*Headset jack detection DAPM pins */ 109 static struct snd_soc_jack_pin hs_jack_pins[] = { 110 { 111 .pin = "Headset Mic", 112 .mask = SND_JACK_MICROPHONE, 113 }, 114 { 115 .pin = "Headset Stereophone", 116 .mask = SND_JACK_HEADPHONE, 117 }, 118 }; 119 120 /* SDP4430 machine DAPM */ 121 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = { 122 /* Outputs */ 123 SND_SOC_DAPM_HP("Headset Stereophone", NULL), 124 SND_SOC_DAPM_SPK("Earphone Spk", NULL), 125 SND_SOC_DAPM_SPK("Ext Spk", NULL), 126 SND_SOC_DAPM_LINE("Line Out", NULL), 127 SND_SOC_DAPM_SPK("Vibrator", NULL), 128 129 /* Inputs */ 130 SND_SOC_DAPM_MIC("Headset Mic", NULL), 131 SND_SOC_DAPM_MIC("Main Handset Mic", NULL), 132 SND_SOC_DAPM_MIC("Sub Handset Mic", NULL), 133 SND_SOC_DAPM_LINE("Line In", NULL), 134 135 /* Digital microphones */ 136 SND_SOC_DAPM_MIC("Digital Mic", NULL), 137 }; 138 139 static const struct snd_soc_dapm_route audio_map[] = { 140 /* Routings for outputs */ 141 {"Headset Stereophone", NULL, "HSOL"}, 142 {"Headset Stereophone", NULL, "HSOR"}, 143 144 {"Earphone Spk", NULL, "EP"}, 145 146 {"Ext Spk", NULL, "HFL"}, 147 {"Ext Spk", NULL, "HFR"}, 148 149 {"Line Out", NULL, "AUXL"}, 150 {"Line Out", NULL, "AUXR"}, 151 152 {"Vibrator", NULL, "VIBRAL"}, 153 {"Vibrator", NULL, "VIBRAR"}, 154 155 /* Routings for inputs */ 156 {"HSMIC", NULL, "Headset Mic"}, 157 {"Headset Mic", NULL, "Headset Mic Bias"}, 158 159 {"MAINMIC", NULL, "Main Handset Mic"}, 160 {"Main Handset Mic", NULL, "Main Mic Bias"}, 161 162 {"SUBMIC", NULL, "Sub Handset Mic"}, 163 {"Sub Handset Mic", NULL, "Main Mic Bias"}, 164 165 {"AFML", NULL, "Line In"}, 166 {"AFMR", NULL, "Line In"}, 167 }; 168 169 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd) 170 { 171 struct snd_soc_component *component = rtd->codec_dai->component; 172 struct snd_soc_card *card = rtd->card; 173 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card); 174 int hs_trim; 175 int ret = 0; 176 177 /* 178 * Configure McPDM offset cancellation based on the HSOTRIM value from 179 * twl6040. 180 */ 181 hs_trim = twl6040_get_trim_value(component, TWL6040_TRIM_HSOTRIM); 182 omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim), 183 TWL6040_HSF_TRIM_RIGHT(hs_trim)); 184 185 /* Headset jack detection only if it is supported */ 186 if (priv->jack_detection) { 187 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", 188 SND_JACK_HEADSET, &hs_jack, 189 hs_jack_pins, 190 ARRAY_SIZE(hs_jack_pins)); 191 if (ret) 192 return ret; 193 194 twl6040_hs_jack_detect(component, &hs_jack, SND_JACK_HEADSET); 195 } 196 197 return 0; 198 } 199 200 static const struct snd_soc_dapm_route dmic_audio_map[] = { 201 {"DMic", NULL, "Digital Mic"}, 202 {"Digital Mic", NULL, "Digital Mic1 Bias"}, 203 }; 204 205 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd) 206 { 207 struct snd_soc_dapm_context *dapm = &rtd->card->dapm; 208 209 return snd_soc_dapm_add_routes(dapm, dmic_audio_map, 210 ARRAY_SIZE(dmic_audio_map)); 211 } 212 213 static int omap_abe_probe(struct platform_device *pdev) 214 { 215 struct device_node *node = pdev->dev.of_node; 216 struct snd_soc_card *card; 217 struct device_node *dai_node; 218 struct abe_twl6040 *priv; 219 int num_links = 0; 220 int ret = 0; 221 222 if (!node) { 223 dev_err(&pdev->dev, "of node is missing.\n"); 224 return -ENODEV; 225 } 226 227 priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL); 228 if (priv == NULL) 229 return -ENOMEM; 230 231 card = &priv->card; 232 card->dev = &pdev->dev; 233 card->owner = THIS_MODULE; 234 card->dapm_widgets = twl6040_dapm_widgets; 235 card->num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets); 236 card->dapm_routes = audio_map; 237 card->num_dapm_routes = ARRAY_SIZE(audio_map); 238 239 if (snd_soc_of_parse_card_name(card, "ti,model")) { 240 dev_err(&pdev->dev, "Card name is not provided\n"); 241 return -ENODEV; 242 } 243 244 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); 245 if (ret) { 246 dev_err(&pdev->dev, "Error while parsing DAPM routing\n"); 247 return ret; 248 } 249 250 dai_node = of_parse_phandle(node, "ti,mcpdm", 0); 251 if (!dai_node) { 252 dev_err(&pdev->dev, "McPDM node is not provided\n"); 253 return -EINVAL; 254 } 255 256 priv->dai_links[0].name = "DMIC"; 257 priv->dai_links[0].stream_name = "TWL6040"; 258 priv->dai_links[0].cpu_of_node = dai_node; 259 priv->dai_links[0].platform_of_node = dai_node; 260 priv->dai_links[0].codec_dai_name = "twl6040-legacy"; 261 priv->dai_links[0].codec_name = "twl6040-codec"; 262 priv->dai_links[0].init = omap_abe_twl6040_init; 263 priv->dai_links[0].ops = &omap_abe_ops; 264 265 dai_node = of_parse_phandle(node, "ti,dmic", 0); 266 if (dai_node) { 267 num_links = 2; 268 priv->dai_links[1].name = "TWL6040"; 269 priv->dai_links[1].stream_name = "DMIC Capture"; 270 priv->dai_links[1].cpu_of_node = dai_node; 271 priv->dai_links[1].platform_of_node = dai_node; 272 priv->dai_links[1].codec_dai_name = "dmic-hifi"; 273 priv->dai_links[1].codec_name = "dmic-codec"; 274 priv->dai_links[1].init = omap_abe_dmic_init; 275 priv->dai_links[1].ops = &omap_abe_dmic_ops; 276 } else { 277 num_links = 1; 278 } 279 280 priv->jack_detection = of_property_read_bool(node, "ti,jack-detection"); 281 of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq); 282 if (!priv->mclk_freq) { 283 dev_err(&pdev->dev, "MCLK frequency not provided\n"); 284 return -EINVAL; 285 } 286 287 card->fully_routed = 1; 288 289 if (!priv->mclk_freq) { 290 dev_err(&pdev->dev, "MCLK frequency missing\n"); 291 return -ENODEV; 292 } 293 294 card->dai_link = priv->dai_links; 295 card->num_links = num_links; 296 297 snd_soc_card_set_drvdata(card, priv); 298 299 ret = devm_snd_soc_register_card(&pdev->dev, card); 300 if (ret) 301 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n", 302 ret); 303 304 return ret; 305 } 306 307 static const struct of_device_id omap_abe_of_match[] = { 308 {.compatible = "ti,abe-twl6040", }, 309 { }, 310 }; 311 MODULE_DEVICE_TABLE(of, omap_abe_of_match); 312 313 static struct platform_driver omap_abe_driver = { 314 .driver = { 315 .name = "omap-abe-twl6040", 316 .pm = &snd_soc_pm_ops, 317 .of_match_table = omap_abe_of_match, 318 }, 319 .probe = omap_abe_probe, 320 }; 321 322 static int __init omap_abe_init(void) 323 { 324 int ret; 325 326 dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL, 327 0); 328 if (IS_ERR(dmic_codec_dev)) { 329 pr_err("%s: dmic-codec device registration failed\n", __func__); 330 return PTR_ERR(dmic_codec_dev); 331 } 332 333 ret = platform_driver_register(&omap_abe_driver); 334 if (ret) { 335 pr_err("%s: platform driver registration failed\n", __func__); 336 platform_device_unregister(dmic_codec_dev); 337 } 338 339 return ret; 340 } 341 module_init(omap_abe_init); 342 343 static void __exit omap_abe_exit(void) 344 { 345 platform_driver_unregister(&omap_abe_driver); 346 platform_device_unregister(dmic_codec_dev); 347 } 348 module_exit(omap_abe_exit); 349 350 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); 351 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec"); 352 MODULE_LICENSE("GPL"); 353 MODULE_ALIAS("platform:omap-abe-twl6040"); 354