ASoC: rockchip: Add machine driver for RK3288 boards that use analog/HDMI

ROCKCHIP RK3288 with HDMI and analog audio

Required properties:

- compatible: "rockchip,rk3288-hdmi-analog"

- rockchip,model: The user-visible name of this sound complex

- rockchip,i2s-controller: The phandle of the Rockchip I2S controller that's

  connected to the CODEC

- rockchip,audio-codec: The phandle of the analog audio codec.

- rockchip,routing: A list of the connections between audio components.

		    Each entry is a pair of strings, the first being the

		    connection's sink, the second being the connection's

		    source. For this driver the first string should always be

		    "Analog".

Optionnal properties:

- rockchip,hp-en-gpios = The phandle of the GPIO that power up/down the

  headphone (when the analog output is an headphone).

- rockchip,hp-det-gpios = The phandle of the GPIO that detects the headphone

  (when the analog output is an headphone).

- pinctrl-names, pinctrl-0: Please refer to pinctrl-bindings.txt

Example:

sound {

	compatible = "rockchip,rockchip-audio-es8388";

	rockchip,model = "Analog audio output";

	rockchip,i2s-controller = <&i2s>;

	rockchip,audio-codec = <&es8388>;

	rockchip,routing = "Analog", "LOUT2",

			   "Analog", "ROUT2";

	rockchip,hp-en-gpios = <&gpio8 0 GPIO_ACTIVE_HIGH>;

	rockchip,hp-det-gpios = <&gpio7 7 GPIO_ACTIVE_HIGH>;

	pinctrl-names = "default";

	pinctrl-0 = <&headphone>;

};

	  Say Y or M here if you want to add support for SoC audio on Rockchip

	  boards using the RT5645/RT5650 codec, such as Veyron.

config SND_SOC_RK3288_HDMI_ANALOG

	tristate "ASoC support multiple codecs for Rockchip RK3288 boards"

	depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB && CLKDEV_LOOKUP

	select SND_SOC_ROCKCHIP_I2S

	select SND_SOC_HDMI_CODEC

	help

	  Say Y or M here if you want to add support for SoC audio on Rockchip

	  RK3288 boards using an analog output and the built-in HDMI audio.

config SND_SOC_RK3399_GRU_SOUND

	tristate "ASoC support multiple codecs for Rockchip RK3399 GRU boards"

	depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB && CLKDEV_LOOKUP && SPI

snd-soc-rockchip-max98090-objs := rockchip_max98090.o

snd-soc-rockchip-rt5645-objs := rockchip_rt5645.o

snd-soc-rk3288-hdmi-analog-objs := rk3288_hdmi_analog.o

snd-soc-rk3399-gru-sound-objs := rk3399_gru_sound.o

obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o

obj-$(CONFIG_SND_SOC_ROCKCHIP_RT5645) += snd-soc-rockchip-rt5645.o

obj-$(CONFIG_SND_SOC_RK3288_HDMI_ANALOG) += snd-soc-rk3288-hdmi-analog.o

obj-$(CONFIG_SND_SOC_RK3399_GRU_SOUND) += snd-soc-rk3399-gru-sound.o

/*

 * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog

 * audio output

 *

 * Copyright (c) 2016, Collabora Ltd.

 *

 * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,

 *	    Romain Perier <romain.perier@collabora.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 */

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/gpio.h>

#include <linux/of_gpio.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 {

	int gpio_hp_en;

	int gpio_hp_det;

};

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);

	if (!gpio_is_valid(machine->gpio_hp_en))

		return 0;

	gpio_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 = substream->private_data;

	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	int mclk;

	switch (params_rate(params)) {

	case 8000:

	case 16000:

	case 24000:

	case 32000:

	case 48000:

	case 64000:

	case 96000:

		mclk = 12288000;

		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 = "Headphone detection",

	.report = SND_JACK_HEADPHONE,

	.debounce_time = 150

};

static int rk_init(struct snd_soc_pcm_runtime *runtime)

{

	struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);

	/* Enable Headset Jack detection */

	if (gpio_is_valid(machine->gpio_hp_det)) {

		snd_soc_card_jack_new(runtime->card, "Headphone Jack",

				      SND_JACK_HEADPHONE, &headphone_jack,

				      headphone_jack_pins,

				      ARRAY_SIZE(headphone_jack_pins));

		rk_hp_jack_gpio.gpio = machine->gpio_hp_det;

		snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);

	}

	return 0;

}

static struct snd_soc_ops rk_ops = {

	.hw_params = rk_hw_params,

};

static struct snd_soc_dai_link_component rk_codecs[] = {

	{ },

	{

		.name = "hdmi-audio-codec.2.auto",

		.dai_name = "hdmi-hifi.0",

	},

};

static struct snd_soc_dai_link rk_dailink = {

	.name = "Codecs",

	.stream_name = "Audio",

	.init = rk_init,

	.ops = &rk_ops,

	.codecs = rk_codecs,

	.num_codecs = ARRAY_SIZE(rk_codecs),

	/* Set codecs as slave */

	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |

		SND_SOC_DAIFMT_CBS_CFS,

};

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 = 0;

	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_det = of_get_named_gpio(np,

		"rockchip,hp-det-gpios", 0);

	if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV)

		return machine->gpio_hp_det;

	machine->gpio_hp_en = of_get_named_gpio(np,

		"rockchip,hp-en-gpios", 0);

	if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV)

		return machine->gpio_hp_en;

	if (gpio_is_valid(machine->gpio_hp_en)) {

		ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,

					    GPIOF_OUT_INIT_LOW, "hp_en");

		if (ret) {

			dev_err(card->dev, "cannot get hp_en gpio\n");

			return ret;

		}

	}

	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.cpu_of_node = of_parse_phandle(np, "rockchip,i2s-controller",

						  0);

	if (!rk_dailink.cpu_of_node) {

		dev_err(&pdev->dev,

			"Property 'rockchip,i2s-controller' missing or invalid\n");

		return -EINVAL;

	}

	rk_dailink.platform_of_node = rk_dailink.cpu_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 == -EPROBE_DEFER)

		return -EPROBE_DEFER;

	if (ret) {

		dev_err(&pdev->dev,

			"Soc register card failed %d\n", ret);

		return ret;

	}

	platform_set_drvdata(pdev, card);

	return ret;

}

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,

		.owner = THIS_MODULE,

		.pm = &snd_soc_pm_ops,

		.of_match_table = rockchip_sound_of_match,

	},

};

module_platform_driver(rockchip_sound_driver);

MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");

MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:" DRV_NAME);