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