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.h>
  16 #include <linux/of_gpio.h>
  17 #include <sound/core.h>
  18 #include <sound/jack.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.h>
  23
  24 #include "rockchip_i2s.h"
  25
  26 #define DRV_NAME "rk3288-snd-hdmi-analog"
  27
  28 struct rk_drvdata {
  29         int gpio_hp_en;
  30         int gpio_hp_det;
  31 };
  32
  33 static int rk_hp_power(struct snd_soc_dapm_widget *w,
  34                        struct snd_kcontrol *k, int event)
  35 {
  36         struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
  37
  38         if (!gpio_is_valid(machine->gpio_hp_en))
  39                 return 0;
  40
  41         gpio_set_value_cansleep(machine->gpio_hp_en,
  42                                 SND_SOC_DAPM_EVENT_ON(event));
  43
  44         return 0;
  45 }
  46
  47 static struct snd_soc_jack headphone_jack;
  48 static struct snd_soc_jack_pin headphone_jack_pins[] = {
  49         {
  50                 .pin = "Analog",
  51                 .mask = SND_JACK_HEADPHONE
  52         },
  53 };
  54
  55 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
  56         SND_SOC_DAPM_HP("Analog", rk_hp_power),
  57         SND_SOC_DAPM_LINE("HDMI", NULL),
  58 };
  59
  60 static const struct snd_kcontrol_new rk_mc_controls[] = {
  61         SOC_DAPM_PIN_SWITCH("Analog"),
  62         SOC_DAPM_PIN_SWITCH("HDMI"),
  63 };
  64
  65 static int rk_hw_params(struct snd_pcm_substream *substream,
  66                         struct snd_pcm_hw_params *params)
  67 {
  68         int ret = 0;
  69         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  70         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  71         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  72         int mclk;
  73
  74         switch (params_rate(params)) {
  75         case 8000:
  76         case 16000:
  77         case 24000:
  78         case 32000:
  79         case 48000:
  80         case 64000:
  81         case 96000:
  82                 mclk = 12288000;
  83                 break;
  84         case 192000:
  85                 mclk = 24576000;
  86                 break;
  87         case 11025:
  88         case 22050:
  89         case 44100:
  90         case 88200:
  91                 mclk = 11289600;
  92                 break;
  93         default:
  94                 return -EINVAL;
  95         }
  96
  97         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
  98                                      SND_SOC_CLOCK_OUT);
  99
 100         if (ret && ret != -ENOTSUPP) {
 101                 dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
 102                 return ret;
 103         }
 104
 105         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 106                                      SND_SOC_CLOCK_IN);
 107         if (ret && ret != -ENOTSUPP) {
 108                 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
 109                 return ret;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
 116         .name = "Headphone detection",
 117         .report = SND_JACK_HEADPHONE,
 118         .debounce_time = 150
 119 };
 120
 121 static int rk_init(struct snd_soc_pcm_runtime *runtime)
 122 {
 123         struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);
 124
 125         /* Enable Headset Jack detection */
 126         if (gpio_is_valid(machine->gpio_hp_det)) {
 127                 snd_soc_card_jack_new(runtime->card, "Headphone Jack",
 128                                       SND_JACK_HEADPHONE, &headphone_jack,
 129                                       headphone_jack_pins,
 130                                       ARRAY_SIZE(headphone_jack_pins));
 131                 rk_hp_jack_gpio.gpio = machine->gpio_hp_det;
 132                 snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
 133         }
 134
 135         return 0;
 136 }
 137
 138 static const struct snd_soc_ops rk_ops = {
 139         .hw_params = rk_hw_params,
 140 };
 141
 142 SND_SOC_DAILINK_DEFS(audio,
 143         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 144         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL),
 145                            COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")),
 146         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 147
 148 static struct snd_soc_dai_link rk_dailink = {
 149         .name = "Codecs",
 150         .stream_name = "Audio",
 151         .init = rk_init,
 152         .ops = &rk_ops,
 153         /* Set codecs as slave */
 154         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 155                 SND_SOC_DAIFMT_CBS_CFS,
 156         SND_SOC_DAILINK_REG(audio),
 157 };
 158
 159 static struct snd_soc_card snd_soc_card_rk = {
 160         .name = "ROCKCHIP-I2S",
 161         .dai_link = &rk_dailink,
 162         .num_links = 1,
 163         .num_aux_devs = 0,
 164         .dapm_widgets = rk_dapm_widgets,
 165         .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
 166         .controls = rk_mc_controls,
 167         .num_controls = ARRAY_SIZE(rk_mc_controls),
 168 };
 169
 170 static int snd_rk_mc_probe(struct platform_device *pdev)
 171 {
 172         int ret = 0;
 173         struct snd_soc_card *card = &snd_soc_card_rk;
 174         struct device_node *np = pdev->dev.of_node;
 175         struct rk_drvdata *machine;
 176         struct of_phandle_args args;
 177
 178         machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
 179                                GFP_KERNEL);
 180         if (!machine)
 181                 return -ENOMEM;
 182
 183         card->dev = &pdev->dev;
 184
 185         machine->gpio_hp_det = of_get_named_gpio(np,
 186                 "rockchip,hp-det-gpios", 0);
 187         if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV)
 188                 return machine->gpio_hp_det;
 189
 190         machine->gpio_hp_en = of_get_named_gpio(np,
 191                 "rockchip,hp-en-gpios", 0);
 192         if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV)
 193                 return machine->gpio_hp_en;
 194
 195         if (gpio_is_valid(machine->gpio_hp_en)) {
 196                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 197                                             GPIOF_OUT_INIT_LOW, "hp_en");
 198                 if (ret) {
 199                         dev_err(card->dev, "cannot get hp_en gpio\n");
 200                         return ret;
 201                 }
 202         }
 203
 204         ret = snd_soc_of_parse_card_name(card, "rockchip,model");
 205         if (ret) {
 206                 dev_err(card->dev, "SoC parse card name failed %d\n", ret);
 207                 return ret;
 208         }
 209
 210         rk_dailink.codecs[0].of_node = of_parse_phandle(np,
 211                                                         "rockchip,audio-codec",
 212                                                         0);
 213         if (!rk_dailink.codecs[0].of_node) {
 214                 dev_err(&pdev->dev,
 215                         "Property 'rockchip,audio-codec' missing or invalid\n");
 216                 return -EINVAL;
 217         }
 218         ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
 219                                                0, 0, &args);
 220         if (ret) {
 221                 dev_err(&pdev->dev,
 222                         "Unable to parse property 'rockchip,audio-codec'\n");
 223                 return ret;
 224         }
 225
 226         ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
 227         if (ret) {
 228                 dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
 229                 return ret;
 230         }
 231
 232         rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
 233                                                   0);
 234         if (!rk_dailink.cpus->of_node) {
 235                 dev_err(&pdev->dev,
 236                         "Property 'rockchip,i2s-controller' missing or invalid\n");
 237                 return -EINVAL;
 238         }
 239
 240         rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
 241
 242         ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
 243         if (ret) {
 244                 dev_err(&pdev->dev,
 245                         "Unable to parse 'rockchip,routing' property\n");
 246                 return ret;
 247         }
 248
 249         snd_soc_card_set_drvdata(card, machine);
 250
 251         ret = devm_snd_soc_register_card(&pdev->dev, card);
 252         if (ret == -EPROBE_DEFER)
 253                 return -EPROBE_DEFER;
 254         if (ret) {
 255                 dev_err(&pdev->dev,
 256                         "Soc register card failed %d\n", ret);
 257                 return ret;
 258         }
 259
 260         return ret;
 261 }
 262
 263 static const struct of_device_id rockchip_sound_of_match[] = {
 264         { .compatible = "rockchip,rk3288-hdmi-analog", },
 265         {},
 266 };
 267
 268 MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
 269
 270 static struct platform_driver rockchip_sound_driver = {
 271         .probe = snd_rk_mc_probe,
 272         .driver = {
 273                 .name = DRV_NAME,
 274                 .pm = &snd_soc_pm_ops,
 275                 .of_match_table = rockchip_sound_of_match,
 276         },
 277 };
 278
 279 module_platform_driver(rockchip_sound_driver);
 280
 281 MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
 282 MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
 283 MODULE_LICENSE("GPL v2");
 284 MODULE_ALIAS("platform:" DRV_NAME);