Quellcode-Bibliothek lowland.c

// SPDX-License-Identifier: GPL-2.0+
//
// Lowland audio support
//
// Copyright 2011 Wolfson Microelectronics

#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <linux/module.h>

#include "../codecs/wm5100.h"
#include "../codecs/wm9081.h"

#define MCLK1_RATE (44100 * 512)
#define CLKOUT_RATE (44100 * 256)

static struct snd_soc_jack lowland_headset;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin lowland_headset_pins[] = {
 {
  .pin = "Headphone",
  .mask = SND_JACK_HEADPHONE,
 },
 {
  .pin = "Headset Mic",
  .mask = SND_JACK_MICROPHONE,
 },
 {
  .pin = "Line Out",
  .mask = SND_JACK_LINEOUT,
 },
};

static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
{
 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
 int ret;

 ret = snd_soc_component_set_sysclk(component, WM5100_CLK_SYSCLK,
           WM5100_CLKSRC_MCLK1, MCLK1_RATE,
           SND_SOC_CLOCK_IN);
 if (ret < 0) {
  pr_err("Failed to set SYSCLK clock source: %d\n", ret);
  return ret;
 }

 /* Clock OPCLK, used by the other audio components. */
 ret = snd_soc_component_set_sysclk(component, WM5100_CLK_OPCLK, 0,
           CLKOUT_RATE, 0);
 if (ret < 0) {
  pr_err("Failed to set OPCLK rate: %d\n", ret);
  return ret;
 }

 ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
      SND_JACK_LINEOUT | SND_JACK_HEADSET |
      SND_JACK_BTN_0,
      &lowland_headset, lowland_headset_pins,
      ARRAY_SIZE(lowland_headset_pins));
 if (ret)
  return ret;

 wm5100_detect(component, &lowland_headset);

 return 0;
}

static int lowland_wm9081_init(struct snd_soc_pcm_runtime *rtd)
{
 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;

 snd_soc_dapm_nc_pin(&rtd->card->dapm, "LINEOUT");

 /* At any time the WM9081 is active it will have this clock */
 return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
     CLKOUT_RATE, 0);
}

static const struct snd_soc_pcm_stream sub_params = {
 .formats = SNDRV_PCM_FMTBIT_S32_LE,
 .rate_min = 44100,
 .rate_max = 44100,
 .channels_min = 2,
 .channels_max = 2,
};

SND_SOC_DAILINK_DEFS(cpu,
 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
 DAILINK_COMP_ARRAY(COMP_CODEC("wm5100.1-001a", "wm5100-aif1")),
 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));

SND_SOC_DAILINK_DEFS(baseband,
 DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif2")),
 DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));

SND_SOC_DAILINK_DEFS(speaker,
 DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif3")),
 DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));

static struct snd_soc_dai_link lowland_dai[] = {
 {
  .name = "CPU",
  .stream_name = "CPU",
  .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
    SND_SOC_DAIFMT_CBP_CFP,
  .init = lowland_wm5100_init,
  SND_SOC_DAILINK_REG(cpu),
 },
 {
  .name = "Baseband",
  .stream_name = "Baseband",
  .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
    SND_SOC_DAIFMT_CBP_CFP,
  .ignore_suspend = 1,
  SND_SOC_DAILINK_REG(baseband),
 },
 {
  .name = "Sub Speaker",
  .stream_name = "Sub Speaker",
  .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
    SND_SOC_DAIFMT_CBP_CFP,
  .ignore_suspend = 1,
  .c2c_params = &sub_params,
  .num_c2c_params = 1,
  .init = lowland_wm9081_init,
  SND_SOC_DAILINK_REG(speaker),
 },
};

static struct snd_soc_codec_conf lowland_codec_conf[] = {
 {
  .dlc = COMP_CODEC_CONF("wm9081.1-006c"),
  .name_prefix = "Sub",
 },
};

static const struct snd_kcontrol_new controls[] = {
 SOC_DAPM_PIN_SWITCH("Main Speaker"),
 SOC_DAPM_PIN_SWITCH("Main DMIC"),
 SOC_DAPM_PIN_SWITCH("Main AMIC"),
 SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 SOC_DAPM_PIN_SWITCH("Headphone"),
 SOC_DAPM_PIN_SWITCH("Line Out"),
};

static const struct snd_soc_dapm_widget widgets[] = {
 SND_SOC_DAPM_HP("Headphone", NULL),
 SND_SOC_DAPM_MIC("Headset Mic", NULL),
 SND_SOC_DAPM_LINE("Line Out", NULL),

 SND_SOC_DAPM_SPK("Main Speaker", NULL),

 SND_SOC_DAPM_MIC("Main AMIC", NULL),
 SND_SOC_DAPM_MIC("Main DMIC", NULL),
};

static const struct snd_soc_dapm_route audio_paths[] = {
 { "Sub IN1", NULL, "HPOUT2L" },
 { "Sub IN2", NULL, "HPOUT2R" },

 { "Main Speaker", NULL, "Sub SPKN" },
 { "Main Speaker", NULL, "Sub SPKP" },
 { "Main Speaker", NULL, "SPKDAT1" },
};

static struct snd_soc_card lowland = {
 .name = "Lowland",
 .owner = THIS_MODULE,
 .dai_link = lowland_dai,
 .num_links = ARRAY_SIZE(lowland_dai),
 .codec_conf = lowland_codec_conf,
 .num_configs = ARRAY_SIZE(lowland_codec_conf),

 .controls = controls,
 .num_controls = ARRAY_SIZE(controls),
 .dapm_widgets = widgets,
 .num_dapm_widgets = ARRAY_SIZE(widgets),
 .dapm_routes = audio_paths,
 .num_dapm_routes = ARRAY_SIZE(audio_paths),
};

static int lowland_probe(struct platform_device *pdev)
{
 struct snd_soc_card *card = &lowland;
 int ret;

 card->dev = &pdev->dev;

 ret = devm_snd_soc_register_card(&pdev->dev, card);
 if (ret)
  dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");

 return ret;
}

static struct platform_driver lowland_driver = {
 .driver = {
  .name = "lowland",
  .pm = &snd_soc_pm_ops,
 },
 .probe = lowland_probe,
};

module_platform_driver(lowland_driver);

MODULE_DESCRIPTION("Lowland audio support");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:lowland");