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
  21 struct apq8016_sbc_data {
  22         struct snd_soc_card card;
  23         void __iomem *mic_iomux;
  24         void __iomem *spkr_iomux;
  25         struct snd_soc_jack jack;
  26         bool jack_setup;
  27 };
  28
  29 #define MIC_CTRL_TER_WS_SLAVE_SEL       BIT(21)
  30 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10    BIT(17)
  31 #define MIC_CTRL_TLMM_SCLK_EN           BIT(1)
  32 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11    (BIT(17) | BIT(16))
  33 #define DEFAULT_MCLK_RATE               9600000
  34
  35 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
  36 {
  37         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  38         struct snd_soc_dai *codec_dai;
  39         struct snd_soc_component *component;
  40         struct snd_soc_card *card = rtd->card;
  41         struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
  42         int i, rval;
  43
  44         switch (cpu_dai->id) {
  45         case MI2S_PRIMARY:
  46                 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
  47                         pdata->spkr_iomux);
  48                 break;
  49
  50         case MI2S_QUATERNARY:
  51                 /* Configure the Quat MI2S to TLMM */
  52                 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
  53                         MIC_CTRL_TLMM_SCLK_EN,
  54                         pdata->mic_iomux);
  55                 break;
  56         case MI2S_TERTIARY:
  57                 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
  58                         MIC_CTRL_TLMM_SCLK_EN,
  59                         pdata->mic_iomux);
  60
  61                 break;
  62
  63         default:
  64                 dev_err(card->dev, "unsupported cpu dai configuration\n");
  65                 return -EINVAL;
  66
  67         }
  68
  69         if (!pdata->jack_setup) {
  70                 struct snd_jack *jack;
  71
  72                 rval = snd_soc_card_jack_new(card, "Headset Jack",
  73                                              SND_JACK_HEADSET |
  74                                              SND_JACK_HEADPHONE |
  75                                              SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  76                                              SND_JACK_BTN_2 | SND_JACK_BTN_3 |
  77                                              SND_JACK_BTN_4,
  78                                              &pdata->jack, NULL, 0);
  79
  80                 if (rval < 0) {
  81                         dev_err(card->dev, "Unable to add Headphone Jack\n");
  82                         return rval;
  83                 }
  84
  85                 jack = pdata->jack.jack;
  86
  87                 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
  88                 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
  89                 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
  90                 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
  91                 pdata->jack_setup = true;
  92         }
  93
  94         for_each_rtd_codec_dais(rtd, i, codec_dai) {
  95
  96                 component = codec_dai->component;
  97                 /* Set default mclk for internal codec */
  98                 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
  99                                        SND_SOC_CLOCK_IN);
 100                 if (rval != 0 && rval != -ENOTSUPP) {
 101                         dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
 102                         return rval;
 103                 }
 104                 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
 105                 if (rval != 0 && rval != -ENOTSUPP) {
 106                         dev_warn(card->dev, "Failed to set jack: %d\n", rval);
 107                         return rval;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 static void apq8016_sbc_add_ops(struct snd_soc_card *card)
 115 {
 116         struct snd_soc_dai_link *link;
 117         int i;
 118
 119         for_each_card_prelinks(card, i, link)
 120                 link->init = apq8016_sbc_dai_init;
 121 }
 122
 123 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
 124
 125         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 126         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 127         SND_SOC_DAPM_MIC("Secondary Mic", NULL),
 128         SND_SOC_DAPM_MIC("Digital Mic1", NULL),
 129         SND_SOC_DAPM_MIC("Digital Mic2", NULL),
 130 };
 131
 132 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
 133 {
 134         struct device *dev = &pdev->dev;
 135         struct snd_soc_card *card;
 136         struct apq8016_sbc_data *data;
 137         struct resource *res;
 138         int ret;
 139
 140         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 141         if (!data)
 142                 return -ENOMEM;
 143
 144         card = &data->card;
 145         card->dev = dev;
 146         card->owner = THIS_MODULE;
 147         card->dapm_widgets = apq8016_sbc_dapm_widgets;
 148         card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
 149
 150         ret = qcom_snd_parse_of(card);
 151         if (ret)
 152                 return ret;
 153
 154         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mic-iomux");
 155         data->mic_iomux = devm_ioremap_resource(dev, res);
 156         if (IS_ERR(data->mic_iomux))
 157                 return PTR_ERR(data->mic_iomux);
 158
 159         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spkr-iomux");
 160         data->spkr_iomux = devm_ioremap_resource(dev, res);
 161         if (IS_ERR(data->spkr_iomux))
 162                 return PTR_ERR(data->spkr_iomux);
 163
 164         snd_soc_card_set_drvdata(card, data);
 165
 166         apq8016_sbc_add_ops(card);
 167         return devm_snd_soc_register_card(&pdev->dev, card);
 168 }
 169
 170 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
 171         { .compatible = "qcom,apq8016-sbc-sndcard" },
 172         {},
 173 };
 174 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
 175
 176 static struct platform_driver apq8016_sbc_platform_driver = {
 177         .driver = {
 178                 .name = "qcom-apq8016-sbc",
 179                 .of_match_table = of_match_ptr(apq8016_sbc_device_id),
 180         },
 181         .probe = apq8016_sbc_platform_probe,
 182 };
 183 module_platform_driver(apq8016_sbc_platform_driver);
 184
 185 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 186 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
 187 MODULE_LICENSE("GPL v2");