349 lines
8.2 KiB
C
349 lines
8.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
//
|
|
// Littlemill audio support
|
|
//
|
|
// Copyright 2011 Wolfson Microelectronics
|
|
|
|
#include <sound/soc.h>
|
|
#include <sound/soc-dapm.h>
|
|
#include <sound/jack.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "../codecs/wm8994.h"
|
|
|
|
static int sample_rate = 44100;
|
|
|
|
static int littlemill_set_bias_level(struct snd_soc_card *card,
|
|
struct snd_soc_dapm_context *dapm,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai *aif1_dai;
|
|
int ret;
|
|
|
|
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
|
|
aif1_dai = asoc_rtd_to_codec(rtd, 0);
|
|
|
|
if (dapm->dev != aif1_dai->dev)
|
|
return 0;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_PREPARE:
|
|
/*
|
|
* If we've not already clocked things via hw_params()
|
|
* then do so now, otherwise these are noops.
|
|
*/
|
|
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
|
|
ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
|
|
WM8994_FLL_SRC_MCLK2, 32768,
|
|
sample_rate * 512);
|
|
if (ret < 0) {
|
|
pr_err("Failed to start FLL: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_sysclk(aif1_dai,
|
|
WM8994_SYSCLK_FLL1,
|
|
sample_rate * 512,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("Failed to set SYSCLK: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int littlemill_set_bias_level_post(struct snd_soc_card *card,
|
|
struct snd_soc_dapm_context *dapm,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai *aif1_dai;
|
|
int ret;
|
|
|
|
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
|
|
aif1_dai = asoc_rtd_to_codec(rtd, 0);
|
|
|
|
if (dapm->dev != aif1_dai->dev)
|
|
return 0;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_STANDBY:
|
|
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
|
|
32768, SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("Failed to switch away from FLL1: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
|
|
0, 0, 0);
|
|
if (ret < 0) {
|
|
pr_err("Failed to stop FLL1: %d\n", ret);
|
|
return ret;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
dapm->bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int littlemill_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
|
|
int ret;
|
|
|
|
sample_rate = params_rate(params);
|
|
|
|
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
|
|
WM8994_FLL_SRC_MCLK2, 32768,
|
|
sample_rate * 512);
|
|
if (ret < 0) {
|
|
pr_err("Failed to start FLL: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_sysclk(codec_dai,
|
|
WM8994_SYSCLK_FLL1,
|
|
sample_rate * 512,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("Failed to set SYSCLK: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_ops littlemill_ops = {
|
|
.hw_params = littlemill_hw_params,
|
|
};
|
|
|
|
static const struct snd_soc_pcm_stream baseband_params = {
|
|
.formats = SNDRV_PCM_FMTBIT_S32_LE,
|
|
.rate_min = 8000,
|
|
.rate_max = 8000,
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
};
|
|
|
|
SND_SOC_DAILINK_DEFS(cpu,
|
|
DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
|
|
DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
|
|
DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
|
|
|
|
SND_SOC_DAILINK_DEFS(baseband,
|
|
DAILINK_COMP_ARRAY(COMP_CPU("wm8994-aif2")),
|
|
DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027",
|
|
"wm1250-ev1")));
|
|
|
|
static struct snd_soc_dai_link littlemill_dai[] = {
|
|
{
|
|
.name = "CPU",
|
|
.stream_name = "CPU",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBM_CFM,
|
|
.ops = &littlemill_ops,
|
|
SND_SOC_DAILINK_REG(cpu),
|
|
},
|
|
{
|
|
.name = "Baseband",
|
|
.stream_name = "Baseband",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBM_CFM,
|
|
.ignore_suspend = 1,
|
|
.c2c_params = &baseband_params,
|
|
.num_c2c_params = 1,
|
|
SND_SOC_DAILINK_REG(baseband),
|
|
},
|
|
};
|
|
|
|
static int bbclk_ev(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_card *card = w->dapm->card;
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_dai *aif2_dai;
|
|
int ret;
|
|
|
|
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
|
|
aif2_dai = asoc_rtd_to_cpu(rtd, 0);
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
|
|
WM8994_FLL_SRC_BCLK, 64 * 8000,
|
|
8000 * 256);
|
|
if (ret < 0) {
|
|
pr_err("Failed to start FLL: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2,
|
|
8000 * 256,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("Failed to set SYSCLK: %d\n", ret);
|
|
return ret;
|
|
}
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMD:
|
|
ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
|
|
32768, SND_SOC_CLOCK_IN);
|
|
if (ret < 0) {
|
|
pr_err("Failed to switch away from FLL2: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
|
|
0, 0, 0);
|
|
if (ret < 0) {
|
|
pr_err("Failed to stop FLL2: %d\n", ret);
|
|
return ret;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_kcontrol_new controls[] = {
|
|
SOC_DAPM_PIN_SWITCH("WM1250 Input"),
|
|
SOC_DAPM_PIN_SWITCH("WM1250 Output"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_widget widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone", NULL),
|
|
|
|
SND_SOC_DAPM_MIC("AMIC", NULL),
|
|
SND_SOC_DAPM_MIC("DMIC", NULL),
|
|
|
|
SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0,
|
|
bbclk_ev,
|
|
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route audio_paths[] = {
|
|
{ "Headphone", NULL, "HPOUT1L" },
|
|
{ "Headphone", NULL, "HPOUT1R" },
|
|
|
|
{ "AMIC", NULL, "MICBIAS1" }, /* Default for AMICBIAS jumper */
|
|
{ "IN1LN", NULL, "AMIC" },
|
|
|
|
{ "DMIC", NULL, "MICBIAS2" }, /* Default for DMICBIAS jumper */
|
|
{ "DMIC1DAT", NULL, "DMIC" },
|
|
{ "DMIC2DAT", NULL, "DMIC" },
|
|
|
|
{ "AIF2CLK", NULL, "Baseband Clock" },
|
|
};
|
|
|
|
static struct snd_soc_jack littlemill_headset;
|
|
|
|
static int littlemill_late_probe(struct snd_soc_card *card)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_dai *aif1_dai;
|
|
struct snd_soc_dai *aif2_dai;
|
|
int ret;
|
|
|
|
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
|
|
component = asoc_rtd_to_codec(rtd, 0)->component;
|
|
aif1_dai = asoc_rtd_to_codec(rtd, 0);
|
|
|
|
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
|
|
aif2_dai = asoc_rtd_to_cpu(rtd, 0);
|
|
|
|
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
|
|
32768, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
|
|
32768, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_card_jack_new(card, "Headset",
|
|
SND_JACK_HEADSET | SND_JACK_MECHANICAL |
|
|
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
|
|
SND_JACK_BTN_2 | SND_JACK_BTN_3 |
|
|
SND_JACK_BTN_4 | SND_JACK_BTN_5,
|
|
&littlemill_headset);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* This will check device compatibility itself */
|
|
wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL);
|
|
|
|
/* As will this */
|
|
wm8994_mic_detect(component, &littlemill_headset, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_card littlemill = {
|
|
.name = "Littlemill",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = littlemill_dai,
|
|
.num_links = ARRAY_SIZE(littlemill_dai),
|
|
|
|
.set_bias_level = littlemill_set_bias_level,
|
|
.set_bias_level_post = littlemill_set_bias_level_post,
|
|
|
|
.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),
|
|
|
|
.late_probe = littlemill_late_probe,
|
|
};
|
|
|
|
static int littlemill_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = &littlemill;
|
|
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 littlemill_driver = {
|
|
.driver = {
|
|
.name = "littlemill",
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = littlemill_probe,
|
|
};
|
|
|
|
module_platform_driver(littlemill_driver);
|
|
|
|
MODULE_DESCRIPTION("Littlemill audio support");
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:littlemill");
|