sound/soc/rockchip/rk3288_hdmi_analog.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
   4  * audio output
   5  *
   6  * Copyright (c) 2016, Collabora Ltd.
   7  *
   8  * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,
   9  *          Romain Perier <romain.perier@collabora.com>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/slab.h>
  15 #include <linux/gpio/consumer.h>
  16 #include <sound/core.h>
  17 #include <sound/jack.h>
  18 #include <sound/pcm.h>
  19 #include <sound/pcm_params.h>
  20 #include <sound/soc.h>
  21 #include <sound/soc-dapm.h>
  22
  23 #include "rockchip_i2s.h"
  24
  25 #define DRV_NAME "rk3288-snd-hdmi-analog"
  26
  27 struct rk_drvdata {
  28         struct gpio_desc *gpio_hp_en;
  29 };
  30
  31 static int rk_hp_power(struct snd_soc_dapm_widget *w,
  32                        struct snd_kcontrol *k, int event)
  33 {
  34         struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
  35
  36         gpiod_set_value_cansleep(machine->gpio_hp_en,
  37                                  SND_SOC_DAPM_EVENT_ON(event));
  38
  39         return 0;
  40 }
  41
  42 static struct snd_soc_jack headphone_jack;
  43 static struct snd_soc_jack_pin headphone_jack_pins[] = {
  44         {
  45                 .pin = "Analog",
  46                 .mask = SND_JACK_HEADPHONE
  47         },
  48 };
  49
  50 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
  51         SND_SOC_DAPM_HP("Analog", rk_hp_power),
  52         SND_SOC_DAPM_LINE("HDMI", NULL),
  53 };
  54
  55 static const struct snd_kcontrol_new rk_mc_controls[] = {
  56         SOC_DAPM_PIN_SWITCH("Analog"),
  57         SOC_DAPM_PIN_SWITCH("HDMI"),
  58 };
  59
  60 static int rk_hw_params(struct snd_pcm_substream *substream,
  61                         struct snd_pcm_hw_params *params)
  62 {
  63         int ret = 0;
  64         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  65         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  66         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  67         int mclk;
  68
  69         switch (params_rate(params)) {
  70         case 8000:
  71         case 16000:
  72         case 24000:
  73         case 32000:
  74         case 48000:
  75         case 64000:
  76         case 96000:
  77                 mclk = 12288000;
  78                 break;
  79         case 192000:
  80                 mclk = 24576000;
  81                 break;
  82         case 11025:
  83         case 22050:
  84         case 44100:
  85         case 88200:
  86                 mclk = 11289600;
  87                 break;
  88         default:
  89                 return -EINVAL;
  90         }
  91
  92         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
  93                                      SND_SOC_CLOCK_OUT);
  94
  95         if (ret && ret != -ENOTSUPP) {
  96                 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
  97                 return ret;
  98         }
  99
 100         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 101                                      SND_SOC_CLOCK_IN);
 102         if (ret && ret != -ENOTSUPP) {
 103                 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
 104                 return ret;
 105         }
 106
 107         return 0;
 108 }
 109
 110 static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
 111         .name = "rockchip,hp-det",
 112         .report = SND_JACK_HEADPHONE,
 113         .debounce_time = 150
 114 };
 115
 116 static int rk_init(struct snd_soc_pcm_runtime *runtime)
 117 {
 118         struct snd_soc_card *card = runtime->card;
 119         struct device *dev = card->dev;
 120
 121         /* Enable optional Headset Jack detection */
 122         if (of_property_present(dev->of_node, "rockchip,hp-det-gpios")) {
 123                 rk_hp_jack_gpio.gpiod_dev = dev;
 124                 snd_soc_card_jack_new_pins(runtime->card, "Headphone Jack",
 125                                            SND_JACK_HEADPHONE, &headphone_jack,
 126                                            headphone_jack_pins,
 127                                            ARRAY_SIZE(headphone_jack_pins));
 128                 snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
 129         }
 130
 131         return 0;
 132 }
 133
 134 static const struct snd_soc_ops rk_ops = {
 135         .hw_params = rk_hw_params,
 136 };
 137
 138 SND_SOC_DAILINK_DEFS(audio,
 139         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 140         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL),
 141                            COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")),
 142         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 143
 144 static struct snd_soc_dai_link rk_dailink = {
 145         .name = "Codecs",
 146         .stream_name = "Audio",
 147         .init = rk_init,
 148         .ops = &rk_ops,
 149         /* Set codecs as slave */
 150         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 151                 SND_SOC_DAIFMT_CBS_CFS,
 152         SND_SOC_DAILINK_REG(audio),
 153 };
 154
 155 static struct snd_soc_card snd_soc_card_rk = {
 156         .name = "ROCKCHIP-I2S",
 157         .dai_link = &rk_dailink,
 158         .num_links = 1,
 159         .num_aux_devs = 0,
 160         .dapm_widgets = rk_dapm_widgets,
 161         .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
 162         .controls = rk_mc_controls,
 163         .num_controls = ARRAY_SIZE(rk_mc_controls),
 164 };
 165
 166 static int snd_rk_mc_probe(struct platform_device *pdev)
 167 {
 168         int ret;
 169         struct snd_soc_card *card = &snd_soc_card_rk;
 170         struct device_node *np = pdev->dev.of_node;
 171         struct rk_drvdata *machine;
 172         struct of_phandle_args args;
 173
 174         machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
 175                                GFP_KERNEL);
 176         if (!machine)
 177                 return -ENOMEM;
 178
 179         card->dev = &pdev->dev;
 180
 181         machine->gpio_hp_en = devm_gpiod_get_optional(&pdev->dev, "rockchip,hp-en", GPIOD_OUT_LOW);
 182         if (IS_ERR(machine->gpio_hp_en))
 183                 return PTR_ERR(machine->gpio_hp_en);
 184         gpiod_set_consumer_name(machine->gpio_hp_en, "hp_en");
 185
 186         ret = snd_soc_of_parse_card_name(card, "rockchip,model");
 187         if (ret) {
 188                 dev_err(card->dev, "SoC parse card name failed %d\n", ret);
 189                 return ret;
 190         }
 191
 192         rk_dailink.codecs[0].of_node = of_parse_phandle(np,
 193                                                         "rockchip,audio-codec",
 194                                                         0);
 195         if (!rk_dailink.codecs[0].of_node) {
 196                 dev_err(&pdev->dev,
 197                         "Property 'rockchip,audio-codec' missing or invalid\n");
 198                 return -EINVAL;
 199         }
 200         ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
 201                                                0, 0, &args);
 202         if (ret) {
 203                 dev_err(&pdev->dev,
 204                         "Unable to parse property 'rockchip,audio-codec'\n");
 205                 return ret;
 206         }
 207
 208         ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
 209         if (ret) {
 210                 dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
 211                 return ret;
 212         }
 213
 214         rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
 215                                                   0);
 216         if (!rk_dailink.cpus->of_node) {
 217                 dev_err(&pdev->dev,
 218                         "Property 'rockchip,i2s-controller' missing or invalid\n");
 219                 return -EINVAL;
 220         }
 221
 222         rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
 223
 224         ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
 225         if (ret) {
 226                 dev_err(&pdev->dev,
 227                         "Unable to parse 'rockchip,routing' property\n");
 228                 return ret;
 229         }
 230
 231         snd_soc_card_set_drvdata(card, machine);
 232
 233         ret = devm_snd_soc_register_card(&pdev->dev, card);
 234         if (ret)
 235                 return dev_err_probe(&pdev->dev, ret,
 236                                      "Soc register card failed\n");
 237
 238         return 0;
 239 }
 240
 241 static const struct of_device_id rockchip_sound_of_match[] = {
 242         { .compatible = "rockchip,rk3288-hdmi-analog", },
 243         {},
 244 };
 245
 246 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
 247
 248 static struct platform_driver rockchip_sound_driver = {
 249         .probe = snd_rk_mc_probe,
 250         .driver = {
 251                 .name = DRV_NAME,
 252                 .pm = &snd_soc_pm_ops,
 253                 .of_match_table = rockchip_sound_of_match,
 254         },
 255 };
 256
 257 module_platform_driver(rockchip_sound_driver);
 258
 259 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
 260 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
 261 MODULE_LICENSE("GPL v2");
 262 MODULE_ALIAS("platform:" DRV_NAME);