// SPDX-License-Identifier: GPL-2.0-only
/*
* Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
* audio output
*
* Copyright (c) 2016, Collabora Ltd.
*
* Authors: Sjoerd Simons <[email protected]>,
* Romain Perier <[email protected]>
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include "rockchip_i2s.h"
#define DRV_NAME "rk3288-snd-hdmi-analog"
struct rk_drvdata {
struct gpio_desc *gpio_hp_en;
};
static int rk_hp_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
gpiod_set_value_cansleep(machine->gpio_hp_en,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static struct snd_soc_jack headphone_jack;
static struct snd_soc_jack_pin headphone_jack_pins[] = {
{
.pin = "Analog",
.mask = SND_JACK_HEADPHONE
},
};
static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
SND_SOC_DAPM_HP("Analog", rk_hp_power),
SND_SOC_DAPM_LINE("HDMI", NULL),
};
static const struct snd_kcontrol_new rk_mc_controls[] = {
SOC_DAPM_PIN_SWITCH("Analog"),
SOC_DAPM_PIN_SWITCH("HDMI"),
};
static int rk_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
int ret = 0;
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
int mclk;
switch (params_rate(params)) {
case 8000:
case 16000:
case 24000:
case 32000:
case 48000:
case 64000:
case 96000:
mclk = 12288000;
break;
case 192000:
mclk = 24576000;
break;
case 11025:
case 22050:
case 44100:
case 88200:
mclk = 11289600;
break;
default:
return -EINVAL;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
SND_SOC_CLOCK_OUT);
if (ret && ret != -ENOTSUPP) {
dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
SND_SOC_CLOCK_IN);
if (ret && ret != -ENOTSUPP) {
dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
return ret;
}
return 0;
}
static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
.name = "rockchip,hp-det",
.report = SND_JACK_HEADPHONE,
.debounce_time = 150
};
static int rk_init(struct snd_soc_pcm_runtime *runtime)
{
struct snd_soc_card *card = runtime->card;
struct device *dev = card->dev;
/* Enable optional Headset Jack detection */
if (of_property_present(dev->of_node, "rockchip,hp-det-gpios")) {
rk_hp_jack_gpio.gpiod_dev = dev;
snd_soc_card_jack_new_pins(runtime->card, "Headphone Jack",
SND_JACK_HEADPHONE, &headphone_jack,
headphone_jack_pins,
ARRAY_SIZE(headphone_jack_pins));
snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
}
return 0;
}
static const struct snd_soc_ops rk_ops = {
.hw_params = rk_hw_params,
};
SND_SOC_DAILINK_DEFS(audio,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL),
COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link rk_dailink = {
.name = "Codecs",
.stream_name = "Audio",
.init = rk_init,
.ops = &rk_ops,
/* Set codecs as slave */
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
SND_SOC_DAILINK_REG(audio),
};
static struct snd_soc_card snd_soc_card_rk = {
.name = "ROCKCHIP-I2S",
.dai_link = &rk_dailink,
.num_links = 1,
.num_aux_devs = 0,
.dapm_widgets = rk_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
.controls = rk_mc_controls,
.num_controls = ARRAY_SIZE(rk_mc_controls),
};
static int snd_rk_mc_probe(struct platform_device *pdev)
{
int ret;
struct snd_soc_card *card = &snd_soc_card_rk;
struct device_node *np = pdev->dev.of_node;
struct rk_drvdata *machine;
struct of_phandle_args args;
machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
GFP_KERNEL);
if (!machine)
return -ENOMEM;
card->dev = &pdev->dev;
machine->gpio_hp_en = devm_gpiod_get_optional(&pdev->dev, "rockchip,hp-en", GPIOD_OUT_LOW);
if (IS_ERR(machine->gpio_hp_en))
return PTR_ERR(machine->gpio_hp_en);
gpiod_set_consumer_name(machine->gpio_hp_en, "hp_en");
ret = snd_soc_of_parse_card_name(card, "rockchip,model");
if (ret) {
dev_err(card->dev, "SoC parse card name failed %d\n", ret);
return ret;
}
rk_dailink.codecs[0].of_node = of_parse_phandle(np,
"rockchip,audio-codec",
0);
if (!rk_dailink.codecs[0].of_node) {
dev_err(&pdev->dev,
"Property 'rockchip,audio-codec' missing or invalid\n");
return -EINVAL;
}
ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
0, 0, &args);
if (ret) {
dev_err(&pdev->dev,
"Unable to parse property 'rockchip,audio-codec'\n");
return ret;
}
ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
if (ret) {
dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
return ret;
}
rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
0);
if (!rk_dailink.cpus->of_node) {
dev_err(&pdev->dev,
"Property 'rockchip,i2s-controller' missing or invalid\n");
return -EINVAL;
}
rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
if (ret) {
dev_err(&pdev->dev,
"Unable to parse 'rockchip,routing' property\n");
return ret;
}
snd_soc_card_set_drvdata(card, machine);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"Soc register card failed\n");
return 0;
}
static const struct of_device_id rockchip_sound_of_match[] = {
{ .compatible = "rockchip,rk3288-hdmi-analog", },
{},
};
MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
static struct platform_driver rockchip_sound_driver = {
.probe = snd_rk_mc_probe,
.driver = {
.name = DRV_NAME,
.pm = &snd_soc_pm_ops,
.of_match_table = rockchip_sound_of_match,
},
};
module_platform_driver(rockchip_sound_driver);
MODULE_AUTHOR("Sjoerd Simons <[email protected]>");
MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
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