sound/soc/qcom/apq8016_sbc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2015 The Linux Foundation. All rights reserved.
   4  */
   5
   6 #include <linux/device.h>
   7 #include <linux/module.h>
   8 #include <linux/kernel.h>
   9 #include <linux/io.h>
  10 #include <linux/of.h>
  11 #include <linux/clk.h>
  12 #include <linux/platform_device.h>
  13 #include <sound/pcm.h>
  14 #include <sound/pcm_params.h>
  15 #include <sound/jack.h>
  16 #include <sound/soc.h>
  17 #include <uapi/linux/input-event-codes.h>
  18 #include <dt-bindings/sound/apq8016-lpass.h>
  19 #include <dt-bindings/sound/qcom,q6afe.h>
  20 #include "common.h"
  21 #include "qdsp6/q6afe.h"
  22
  23 #define MI2S_COUNT  (MI2S_QUATERNARY + 1)
  24
  25 struct apq8016_sbc_data {
  26         struct snd_soc_card card;
  27         void __iomem *mic_iomux;
  28         void __iomem *spkr_iomux;
  29         struct snd_soc_jack jack;
  30         bool jack_setup;
  31         int mi2s_clk_count[MI2S_COUNT];
  32 };
  33
  34 #define MIC_CTRL_TER_WS_SLAVE_SEL       BIT(21)
  35 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10    BIT(17)
  36 #define MIC_CTRL_TLMM_SCLK_EN           BIT(1)
  37 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11    (BIT(17) | BIT(16))
  38 #define SPKR_CTL_TLMM_MCLK_EN           BIT(1)
  39 #define SPKR_CTL_TLMM_SCLK_EN           BIT(2)
  40 #define SPKR_CTL_TLMM_DATA1_EN          BIT(3)
  41 #define SPKR_CTL_TLMM_WS_OUT_SEL_MASK   GENMASK(7, 6)
  42 #define SPKR_CTL_TLMM_WS_OUT_SEL_SEC    BIT(6)
  43 #define SPKR_CTL_TLMM_WS_EN_SEL_MASK    GENMASK(19, 18)
  44 #define SPKR_CTL_TLMM_WS_EN_SEL_SEC     BIT(18)
  45 #define DEFAULT_MCLK_RATE               9600000
  46 #define MI2S_BCLK_RATE                  1536000
  47
  48 static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = {
  49         {
  50                 .pin = "Mic Jack",
  51                 .mask = SND_JACK_MICROPHONE,
  52         },
  53         {
  54                 .pin = "Headphone Jack",
  55                 .mask = SND_JACK_HEADPHONE,
  56         },
  57 };
  58
  59 static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
  60 {
  61         struct snd_soc_dai *codec_dai;
  62         struct snd_soc_component *component;
  63         struct snd_soc_card *card = rtd->card;
  64         struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
  65         int i, rval;
  66         u32 value;
  67
  68         switch (mi2s) {
  69         case MI2S_PRIMARY:
  70                 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
  71                         pdata->spkr_iomux);
  72                 break;
  73
  74         case MI2S_QUATERNARY:
  75                 /* Configure the Quat MI2S to TLMM */
  76                 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
  77                         MIC_CTRL_TLMM_SCLK_EN,
  78                         pdata->mic_iomux);
  79                 break;
  80         case MI2S_SECONDARY:
  81                 /* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
  82                 value = readl(pdata->spkr_iomux) &
  83                         ~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
  84                 /* Configure the Sec MI2S to TLMM */
  85                 writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
  86                         SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
  87                         SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
  88                 break;
  89         case MI2S_TERTIARY:
  90                 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
  91                         MIC_CTRL_TLMM_SCLK_EN,
  92                         pdata->mic_iomux);
  93
  94                 break;
  95
  96         default:
  97                 dev_err(card->dev, "unsupported cpu dai configuration\n");
  98                 return -EINVAL;
  99
 100         }
 101
 102         if (!pdata->jack_setup) {
 103                 struct snd_jack *jack;
 104
 105                 rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
 106                                                   SND_JACK_HEADSET |
 107                                                   SND_JACK_HEADPHONE |
 108                                                   SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 109                                                   SND_JACK_BTN_2 | SND_JACK_BTN_3 |
 110                                                   SND_JACK_BTN_4,
 111                                                   &pdata->jack,
 112                                                   apq8016_sbc_jack_pins,
 113                                                   ARRAY_SIZE(apq8016_sbc_jack_pins));
 114
 115                 if (rval < 0) {
 116                         dev_err(card->dev, "Unable to add Headphone Jack\n");
 117                         return rval;
 118                 }
 119
 120                 jack = pdata->jack.jack;
 121
 122                 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 123                 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 124                 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 125                 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 126                 pdata->jack_setup = true;
 127         }
 128
 129         for_each_rtd_codec_dais(rtd, i, codec_dai) {
 130
 131                 component = codec_dai->component;
 132                 /* Set default mclk for internal codec */
 133                 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
 134                                        SND_SOC_CLOCK_IN);
 135                 if (rval != 0 && rval != -ENOTSUPP) {
 136                         dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
 137                         return rval;
 138                 }
 139                 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
 140                 if (rval != 0 && rval != -ENOTSUPP) {
 141                         dev_warn(card->dev, "Failed to set jack: %d\n", rval);
 142                         return rval;
 143                 }
 144         }
 145
 146         return 0;
 147 }
 148
 149 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
 150 {
 151         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 152
 153         return apq8016_dai_init(rtd, cpu_dai->id);
 154 }
 155
 156 static void apq8016_sbc_add_ops(struct snd_soc_card *card)
 157 {
 158         struct snd_soc_dai_link *link;
 159         int i;
 160
 161         for_each_card_prelinks(card, i, link)
 162                 link->init = apq8016_sbc_dai_init;
 163 }
 164
 165 static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
 166 {
 167         switch (cpu_dai->id) {
 168         case PRIMARY_MI2S_RX:
 169         case PRIMARY_MI2S_TX:
 170                 return MI2S_PRIMARY;
 171         case SECONDARY_MI2S_RX:
 172         case SECONDARY_MI2S_TX:
 173                 return MI2S_SECONDARY;
 174         case TERTIARY_MI2S_RX:
 175         case TERTIARY_MI2S_TX:
 176                 return MI2S_TERTIARY;
 177         case QUATERNARY_MI2S_RX:
 178         case QUATERNARY_MI2S_TX:
 179                 return MI2S_QUATERNARY;
 180         default:
 181                 return -EINVAL;
 182         }
 183 }
 184
 185 static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
 186 {
 187         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 188
 189         snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
 190         return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
 191 }
 192
 193 static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
 194 {
 195         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 196         struct snd_soc_card *card = rtd->card;
 197         struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 198         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 199         int mi2s, ret;
 200
 201         mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
 202         if (mi2s < 0)
 203                 return mi2s;
 204
 205         if (++data->mi2s_clk_count[mi2s] > 1)
 206                 return 0;
 207
 208         ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
 209         if (ret)
 210                 dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
 211         return ret;
 212 }
 213
 214 static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
 215 {
 216         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 217         struct snd_soc_card *card = rtd->card;
 218         struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 219         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 220         int mi2s, ret;
 221
 222         mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
 223         if (mi2s < 0)
 224                 return;
 225
 226         if (--data->mi2s_clk_count[mi2s] > 0)
 227                 return;
 228
 229         ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
 230         if (ret)
 231                 dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
 232 }
 233
 234 static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
 235         .startup = msm8916_qdsp6_startup,
 236         .shutdown = msm8916_qdsp6_shutdown,
 237 };
 238
 239 static int msm8916_qdsp6_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 240                                             struct snd_pcm_hw_params *params)
 241 {
 242         struct snd_interval *rate = hw_param_interval(params,
 243                                         SNDRV_PCM_HW_PARAM_RATE);
 244         struct snd_interval *channels = hw_param_interval(params,
 245                                         SNDRV_PCM_HW_PARAM_CHANNELS);
 246         struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 247
 248         rate->min = rate->max = 48000;
 249         channels->min = channels->max = 2;
 250         snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
 251
 252         return 0;
 253 }
 254
 255 static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
 256 {
 257         struct snd_soc_dai_link *link;
 258         int i;
 259
 260         /* Make it obvious to userspace that QDSP6 is used */
 261         card->components = "qdsp6";
 262
 263         for_each_card_prelinks(card, i, link) {
 264                 if (link->no_pcm) {
 265                         link->init = msm8916_qdsp6_dai_init;
 266                         link->ops = &msm8916_qdsp6_be_ops;
 267                         link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
 268                 }
 269         }
 270 }
 271
 272 static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = {
 273         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 274         SOC_DAPM_PIN_SWITCH("Mic Jack"),
 275 };
 276
 277 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
 278         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 279         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 280         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 281         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 282         SND_SOC_DAPM_MIC("Secondary Mic", NULL),
 283         SND_SOC_DAPM_MIC("Digital Mic1", NULL),
 284         SND_SOC_DAPM_MIC("Digital Mic2", NULL),
 285 };
 286
 287 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
 288 {
 289         void (*add_ops)(struct snd_soc_card *card);
 290         struct device *dev = &pdev->dev;
 291         struct snd_soc_card *card;
 292         struct apq8016_sbc_data *data;
 293         int ret;
 294
 295         add_ops = device_get_match_data(&pdev->dev);
 296         if (!add_ops)
 297                 return -EINVAL;
 298
 299         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 300         if (!data)
 301                 return -ENOMEM;
 302
 303         card = &data->card;
 304         card->dev = dev;
 305         card->owner = THIS_MODULE;
 306         card->dapm_widgets = apq8016_sbc_dapm_widgets;
 307         card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
 308         card->controls = apq8016_sbc_snd_controls;
 309         card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls);
 310
 311         ret = qcom_snd_parse_of(card);
 312         if (ret)
 313                 return ret;
 314
 315         data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
 316         if (IS_ERR(data->mic_iomux))
 317                 return PTR_ERR(data->mic_iomux);
 318
 319         data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
 320         if (IS_ERR(data->spkr_iomux))
 321                 return PTR_ERR(data->spkr_iomux);
 322
 323         snd_soc_card_set_drvdata(card, data);
 324
 325         add_ops(card);
 326         return devm_snd_soc_register_card(&pdev->dev, card);
 327 }
 328
 329 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
 330         { .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
 331         { .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
 332         {},
 333 };
 334 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
 335
 336 static struct platform_driver apq8016_sbc_platform_driver = {
 337         .driver = {
 338                 .name = "qcom-apq8016-sbc",
 339                 .of_match_table = of_match_ptr(apq8016_sbc_device_id),
 340         },
 341         .probe = apq8016_sbc_platform_probe,
 342 };
 343 module_platform_driver(apq8016_sbc_platform_driver);
 344
 345 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 346 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
 347 MODULE_LICENSE("GPL v2");