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Linux/sound/soc/mediatek/mt2701/mt2701-cs42448.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  * mt2701-cs42448.c  --  MT2701 CS42448 ALSA SoC machine driver
  4  *
  5  * Copyright (c) 2016 MediaTek Inc.
  6  * Author: Ir Lian <ir.lian@mediatek.com>
  7  *         Garlic Tseng <garlic.tseng@mediatek.com>
  8  */
  9 
 10 #include <linux/module.h>
 11 #include <sound/soc.h>
 12 #include <linux/delay.h>
 13 #include <linux/gpio.h>
 14 #include <linux/pinctrl/consumer.h>
 15 #include <linux/of_gpio.h>
 16 
 17 #include "mt2701-afe-common.h"
 18 
 19 struct mt2701_cs42448_private {
 20         int i2s1_in_mux;
 21         int i2s1_in_mux_gpio_sel_1;
 22         int i2s1_in_mux_gpio_sel_2;
 23 };
 24 
 25 static const char * const i2sin_mux_switch_text[] = {
 26         "ADC_SDOUT2",
 27         "ADC_SDOUT3",
 28         "I2S_IN_1",
 29         "I2S_IN_2",
 30 };
 31 
 32 static const struct soc_enum i2sin_mux_enum =
 33         SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text);
 34 
 35 static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol,
 36                                          struct snd_ctl_elem_value *ucontrol)
 37 {
 38         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 39         struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
 40 
 41         ucontrol->value.integer.value[0] = priv->i2s1_in_mux;
 42         return 0;
 43 }
 44 
 45 static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol,
 46                                          struct snd_ctl_elem_value *ucontrol)
 47 {
 48         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 49         struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
 50 
 51         if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux)
 52                 return 0;
 53 
 54         switch (ucontrol->value.integer.value[0]) {
 55         case 0:
 56                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
 57                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
 58                 break;
 59         case 1:
 60                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
 61                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
 62                 break;
 63         case 2:
 64                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
 65                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
 66                 break;
 67         case 3:
 68                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
 69                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
 70                 break;
 71         default:
 72                 dev_warn(card->dev, "%s invalid setting\n", __func__);
 73         }
 74 
 75         priv->i2s1_in_mux = ucontrol->value.integer.value[0];
 76         return 0;
 77 }
 78 
 79 static const struct snd_soc_dapm_widget
 80                         mt2701_cs42448_asoc_card_dapm_widgets[] = {
 81         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 82         SND_SOC_DAPM_MIC("AMIC", NULL),
 83         SND_SOC_DAPM_LINE("Tuner In", NULL),
 84         SND_SOC_DAPM_LINE("Satellite Tuner In", NULL),
 85         SND_SOC_DAPM_LINE("AUX In", NULL),
 86 };
 87 
 88 static const struct snd_kcontrol_new mt2701_cs42448_controls[] = {
 89         SOC_DAPM_PIN_SWITCH("Line Out Jack"),
 90         SOC_DAPM_PIN_SWITCH("AMIC"),
 91         SOC_DAPM_PIN_SWITCH("Tuner In"),
 92         SOC_DAPM_PIN_SWITCH("Satellite Tuner In"),
 93         SOC_DAPM_PIN_SWITCH("AUX In"),
 94         SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum,
 95                      mt2701_cs42448_i2sin1_mux_get,
 96                      mt2701_cs42448_i2sin1_mux_set),
 97 };
 98 
 99 static const unsigned int mt2701_cs42448_sampling_rates[] = {48000};
100 
101 static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = {
102                 .count = ARRAY_SIZE(mt2701_cs42448_sampling_rates),
103                 .list = mt2701_cs42448_sampling_rates,
104                 .mask = 0,
105 };
106 
107 static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream)
108 {
109         int err;
110 
111         err = snd_pcm_hw_constraint_list(substream->runtime, 0,
112                                          SNDRV_PCM_HW_PARAM_RATE,
113                                          &mt2701_cs42448_constraints_rates);
114         if (err < 0) {
115                 dev_err(substream->pcm->card->dev,
116                         "%s snd_pcm_hw_constraint_list failed: 0x%x\n",
117                         __func__, err);
118                 return err;
119         }
120         return 0;
121 }
122 
123 static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = {
124         .startup = mt2701_cs42448_fe_ops_startup,
125 };
126 
127 static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
128                                            struct snd_pcm_hw_params *params)
129 {
130         struct snd_soc_pcm_runtime *rtd = substream->private_data;
131         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
132         struct snd_soc_dai *codec_dai = rtd->codec_dai;
133         unsigned int mclk_rate;
134         unsigned int rate = params_rate(params);
135         unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
136         unsigned int div_bck_over_lrck = 64;
137 
138         mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
139 
140         /* mt2701 mclk */
141         snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
142 
143         /* codec mclk */
144         snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
145 
146         return 0;
147 }
148 
149 static struct snd_soc_ops mt2701_cs42448_be_ops = {
150         .hw_params = mt2701_cs42448_be_ops_hw_params
151 };
152 
153 enum {
154         DAI_LINK_FE_MULTI_CH_OUT,
155         DAI_LINK_FE_PCM0_IN,
156         DAI_LINK_FE_PCM1_IN,
157         DAI_LINK_FE_BT_OUT,
158         DAI_LINK_FE_BT_IN,
159         DAI_LINK_BE_I2S0,
160         DAI_LINK_BE_I2S1,
161         DAI_LINK_BE_I2S2,
162         DAI_LINK_BE_I2S3,
163         DAI_LINK_BE_MRG_BT,
164 };
165 
166 SND_SOC_DAILINK_DEFS(fe_multi_ch_out,
167         DAILINK_COMP_ARRAY(COMP_CPU("PCM_multi")),
168         DAILINK_COMP_ARRAY(COMP_DUMMY()),
169         DAILINK_COMP_ARRAY(COMP_EMPTY()));
170 
171 SND_SOC_DAILINK_DEFS(fe_pcm0_in,
172         DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
173         DAILINK_COMP_ARRAY(COMP_DUMMY()),
174         DAILINK_COMP_ARRAY(COMP_EMPTY()));
175 
176 SND_SOC_DAILINK_DEFS(fe_pcm1_in,
177         DAILINK_COMP_ARRAY(COMP_CPU("PCM1")),
178         DAILINK_COMP_ARRAY(COMP_DUMMY()),
179         DAILINK_COMP_ARRAY(COMP_EMPTY()));
180 
181 SND_SOC_DAILINK_DEFS(fe_bt_out,
182         DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_DL")),
183         DAILINK_COMP_ARRAY(COMP_DUMMY()),
184         DAILINK_COMP_ARRAY(COMP_EMPTY()));
185 
186 SND_SOC_DAILINK_DEFS(fe_bt_in,
187         DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_UL")),
188         DAILINK_COMP_ARRAY(COMP_DUMMY()),
189         DAILINK_COMP_ARRAY(COMP_EMPTY()));
190 
191 SND_SOC_DAILINK_DEFS(be_i2s0,
192         DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),
193         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
194         DAILINK_COMP_ARRAY(COMP_EMPTY()));
195 
196 SND_SOC_DAILINK_DEFS(be_i2s1,
197         DAILINK_COMP_ARRAY(COMP_CPU("I2S1")),
198         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
199         DAILINK_COMP_ARRAY(COMP_EMPTY()));
200 
201 SND_SOC_DAILINK_DEFS(be_i2s2,
202         DAILINK_COMP_ARRAY(COMP_CPU("I2S2")),
203         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
204         DAILINK_COMP_ARRAY(COMP_EMPTY()));
205 
206 SND_SOC_DAILINK_DEFS(be_i2s3,
207         DAILINK_COMP_ARRAY(COMP_CPU("I2S3")),
208         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
209         DAILINK_COMP_ARRAY(COMP_EMPTY()));
210 
211 SND_SOC_DAILINK_DEFS(be_mrg_bt,
212         DAILINK_COMP_ARRAY(COMP_CPU("MRG BT")),
213         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "bt-sco-pcm-wb")),
214         DAILINK_COMP_ARRAY(COMP_EMPTY()));
215 
216 static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
217         /* FE */
218         [DAI_LINK_FE_MULTI_CH_OUT] = {
219                 .name = "mt2701-cs42448-multi-ch-out",
220                 .stream_name = "mt2701-cs42448-multi-ch-out",
221                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
222                             SND_SOC_DPCM_TRIGGER_POST},
223                 .ops = &mt2701_cs42448_48k_fe_ops,
224                 .dynamic = 1,
225                 .dpcm_playback = 1,
226                 SND_SOC_DAILINK_REG(fe_multi_ch_out),
227         },
228         [DAI_LINK_FE_PCM0_IN] = {
229                 .name = "mt2701-cs42448-pcm0",
230                 .stream_name = "mt2701-cs42448-pcm0-data-UL",
231                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
232                             SND_SOC_DPCM_TRIGGER_POST},
233                 .ops = &mt2701_cs42448_48k_fe_ops,
234                 .dynamic = 1,
235                 .dpcm_capture = 1,
236                 SND_SOC_DAILINK_REG(fe_pcm0_in),
237         },
238         [DAI_LINK_FE_PCM1_IN] = {
239                 .name = "mt2701-cs42448-pcm1-data-UL",
240                 .stream_name = "mt2701-cs42448-pcm1-data-UL",
241                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
242                             SND_SOC_DPCM_TRIGGER_POST},
243                 .ops = &mt2701_cs42448_48k_fe_ops,
244                 .dynamic = 1,
245                 .dpcm_capture = 1,
246                 SND_SOC_DAILINK_REG(fe_pcm1_in),
247         },
248         [DAI_LINK_FE_BT_OUT] = {
249                 .name = "mt2701-cs42448-pcm-BT-out",
250                 .stream_name = "mt2701-cs42448-pcm-BT",
251                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
252                             SND_SOC_DPCM_TRIGGER_POST},
253                 .dynamic = 1,
254                 .dpcm_playback = 1,
255                 SND_SOC_DAILINK_REG(fe_bt_out),
256         },
257         [DAI_LINK_FE_BT_IN] = {
258                 .name = "mt2701-cs42448-pcm-BT-in",
259                 .stream_name = "mt2701-cs42448-pcm-BT",
260                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
261                             SND_SOC_DPCM_TRIGGER_POST},
262                 .dynamic = 1,
263                 .dpcm_capture = 1,
264                 SND_SOC_DAILINK_REG(fe_bt_in),
265         },
266         /* BE */
267         [DAI_LINK_BE_I2S0] = {
268                 .name = "mt2701-cs42448-I2S0",
269                 .no_pcm = 1,
270                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
271                          | SND_SOC_DAIFMT_GATED,
272                 .ops = &mt2701_cs42448_be_ops,
273                 .dpcm_playback = 1,
274                 .dpcm_capture = 1,
275                 SND_SOC_DAILINK_REG(be_i2s0),
276         },
277         [DAI_LINK_BE_I2S1] = {
278                 .name = "mt2701-cs42448-I2S1",
279                 .no_pcm = 1,
280                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
281                          | SND_SOC_DAIFMT_GATED,
282                 .ops = &mt2701_cs42448_be_ops,
283                 .dpcm_playback = 1,
284                 .dpcm_capture = 1,
285                 SND_SOC_DAILINK_REG(be_i2s1),
286         },
287         [DAI_LINK_BE_I2S2] = {
288                 .name = "mt2701-cs42448-I2S2",
289                 .no_pcm = 1,
290                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
291                          | SND_SOC_DAIFMT_GATED,
292                 .ops = &mt2701_cs42448_be_ops,
293                 .dpcm_playback = 1,
294                 .dpcm_capture = 1,
295                 SND_SOC_DAILINK_REG(be_i2s2),
296         },
297         [DAI_LINK_BE_I2S3] = {
298                 .name = "mt2701-cs42448-I2S3",
299                 .no_pcm = 1,
300                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
301                          | SND_SOC_DAIFMT_GATED,
302                 .ops = &mt2701_cs42448_be_ops,
303                 .dpcm_playback = 1,
304                 .dpcm_capture = 1,
305                 SND_SOC_DAILINK_REG(be_i2s3),
306         },
307         [DAI_LINK_BE_MRG_BT] = {
308                 .name = "mt2701-cs42448-MRG-BT",
309                 .no_pcm = 1,
310                 .dpcm_playback = 1,
311                 .dpcm_capture = 1,
312                 SND_SOC_DAILINK_REG(be_mrg_bt),
313         },
314 };
315 
316 static struct snd_soc_card mt2701_cs42448_soc_card = {
317         .name = "mt2701-cs42448",
318         .owner = THIS_MODULE,
319         .dai_link = mt2701_cs42448_dai_links,
320         .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
321         .controls = mt2701_cs42448_controls,
322         .num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
323         .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
324         .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
325 };
326 
327 static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
328 {
329         struct snd_soc_card *card = &mt2701_cs42448_soc_card;
330         int ret;
331         int i;
332         struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
333         struct mt2701_cs42448_private *priv =
334                 devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
335                              GFP_KERNEL);
336         struct device *dev = &pdev->dev;
337         struct snd_soc_dai_link *dai_link;
338 
339         if (!priv)
340                 return -ENOMEM;
341 
342         platform_node = of_parse_phandle(pdev->dev.of_node,
343                                          "mediatek,platform", 0);
344         if (!platform_node) {
345                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
346                 return -EINVAL;
347         }
348         for_each_card_prelinks(card, i, dai_link) {
349                 if (dai_link->platforms->name)
350                         continue;
351                 dai_link->platforms->of_node = platform_node;
352         }
353 
354         card->dev = dev;
355 
356         codec_node = of_parse_phandle(pdev->dev.of_node,
357                                       "mediatek,audio-codec", 0);
358         if (!codec_node) {
359                 dev_err(&pdev->dev,
360                         "Property 'audio-codec' missing or invalid\n");
361                 return -EINVAL;
362         }
363         for_each_card_prelinks(card, i, dai_link) {
364                 if (dai_link->codecs->name)
365                         continue;
366                 dai_link->codecs->of_node = codec_node;
367         }
368 
369         codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node,
370                                              "mediatek,audio-codec-bt-mrg", 0);
371         if (!codec_node_bt_mrg) {
372                 dev_err(&pdev->dev,
373                         "Property 'audio-codec-bt-mrg' missing or invalid\n");
374                 return -EINVAL;
375         }
376         mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codecs->of_node
377                                                         = codec_node_bt_mrg;
378 
379         ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
380         if (ret) {
381                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
382                 return ret;
383         }
384 
385         priv->i2s1_in_mux_gpio_sel_1 =
386                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0);
387         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) {
388                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1,
389                                         "i2s1_in_mux_gpio_sel_1");
390                 if (ret)
391                         dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n",
392                                  __func__, ret);
393                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0);
394         }
395 
396         priv->i2s1_in_mux_gpio_sel_2 =
397                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0);
398         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) {
399                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2,
400                                         "i2s1_in_mux_gpio_sel_2");
401                 if (ret)
402                         dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n",
403                                  __func__, ret);
404                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0);
405         }
406         snd_soc_card_set_drvdata(card, priv);
407 
408         ret = devm_snd_soc_register_card(&pdev->dev, card);
409 
410         if (ret)
411                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
412                         __func__, ret);
413         return ret;
414 }
415 
416 #ifdef CONFIG_OF
417 static const struct of_device_id mt2701_cs42448_machine_dt_match[] = {
418         {.compatible = "mediatek,mt2701-cs42448-machine",},
419         {}
420 };
421 #endif
422 
423 static struct platform_driver mt2701_cs42448_machine = {
424         .driver = {
425                 .name = "mt2701-cs42448",
426                    #ifdef CONFIG_OF
427                    .of_match_table = mt2701_cs42448_machine_dt_match,
428                    #endif
429         },
430         .probe = mt2701_cs42448_machine_probe,
431 };
432 
433 module_platform_driver(mt2701_cs42448_machine);
434 
435 /* Module information */
436 MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver");
437 MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>");
438 MODULE_LICENSE("GPL v2");
439 MODULE_ALIAS("mt2701 cs42448 soc card");
440 

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