Subject: [PATCH 1/2] ASoC: rockchip-max98090: add driver for rockchip board using a max98090

From: [email-masked] (Jianqun)
Date: Tue, 21 Oct 2014 14:02:34 +0800

Hi , could someone help to review my patch ?

? 10/07/2014 09:43 AM, Jianqun ??:
> The driver is used for rockchip board using a max98090.
> Test on RK3288 board with max98090.
>
> Signed-off-by: Jianqun Xu <[email-masked]>
> ---
>  sound/soc/rockchip/Kconfig             |   9 +
>  sound/soc/rockchip/Makefile            |   5 +-
>  sound/soc/rockchip/rockchip_max98090.c | 346 +++++++++++++++++++++++++++++++++
>  3 files changed, 359 insertions(+), 1 deletion(-)
>  create mode 100644 sound/soc/rockchip/rockchip_max98090.c
>
> diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
> index 78fc159..f82fbf5 100644
> --- a/sound/soc/rockchip/Kconfig
> +++ b/sound/soc/rockchip/Kconfig
> @@ -9,3 +9,12 @@ config SND_SOC_ROCKCHIP
>  
>  config SND_SOC_ROCKCHIP_I2S
>  	tristate
> +
> +config SND_SOC_ROCKCHIP_MAX98090
> +	tristate "ASoC support for Rockchip boards using a MAX98090 codec"
> +	depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB
> +	select SND_SOC_ROCKCHIP_I2S
> +	select SND_SOC_MAX98090
> +	help
> +	  Say Y or M here if you want to add support for SoC audio on Rockchip
> +	  boards using the MAX98090 codec, such as Veyron.
> diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile
> index b921909..c324411 100644
> --- a/sound/soc/rockchip/Makefile
> +++ b/sound/soc/rockchip/Makefile
> @@ -1,4 +1,7 @@
>  # ROCKCHIP Platform Support
>  snd-soc-i2s-objs := rockchip_i2s.o
> -
>  obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-i2s.o
> +
> +# ROCKCHIP Machine Support
> +snd-soc-rockchip-max98090-objs := rockchip_max98090.o
> +obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o
> diff --git a/sound/soc/rockchip/rockchip_max98090.c b/sound/soc/rockchip/rockchip_max98090.c
> new file mode 100644
> index 0000000..928b161
> --- /dev/null
> +++ b/sound/soc/rockchip/rockchip_max98090.c
> @@ -0,0 +1,346 @@
> +/*
> + * Rockchip machine ASoC driver for boards using a MAX90809 CODEC.
> + *
> + * Copyright (c) 2014, ROCKCHIP CORPORATION.  All rights reserved.
> + *
> + * 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 "rockchip_i2s.h"
> +
> +#define DRV_NAME "rockchip-snd-max98090"
> +
> +struct rk_mc_private {
> +	struct snd_soc_jack hp_jack;
> +	struct snd_soc_jack mic_jack;
> +};
> +
> +static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
> +	SND_SOC_DAPM_HP("Headphone", NULL),
> +	SND_SOC_DAPM_MIC("Headset Mic", NULL),
> +	SND_SOC_DAPM_MIC("Int Mic", NULL),
> +	SND_SOC_DAPM_SPK("Ext Spk", NULL),
> +};
> +
> +static const struct snd_soc_dapm_route rk_audio_map[] = {
> +	{"IN34", NULL, "Headset Mic"},
> +	{"IN34", NULL, "MICBIAS"},
> +	{"MICBIAS", NULL, "Headset Mic"},
> +	{"DMICL", NULL, "Int Mic"},
> +	{"Headphone", NULL, "HPL"},
> +	{"Headphone", NULL, "HPR"},
> +	{"Ext Spk", NULL, "SPKL"},
> +	{"Ext Spk", NULL, "SPKR"},
> +};
> +
> +static const struct snd_kcontrol_new rk_mc_controls[] = {
> +	SOC_DAPM_PIN_SWITCH("Headphone"),
> +	SOC_DAPM_PIN_SWITCH("Headset Mic"),
> +	SOC_DAPM_PIN_SWITCH("Int Mic"),
> +	SOC_DAPM_PIN_SWITCH("Ext Spk"),
> +};
> +
> +static int rk_aif1_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 srate, mclk;
> +
> +	srate = params_rate(params);
> +	switch (srate) {
> +	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:
> +		mclk = 12000000;
> +		break;
> +	}
> +
> +	ret = snd_soc_dai_set_sysclk(cpu_dai, 0,
> +				     mclk,
> +				     SND_SOC_CLOCK_OUT);
> +	if (ret < 0) {
> +		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
> +		return ret;
> +	}
> +
> +	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
> +				     mclk,
> +				     SND_SOC_CLOCK_IN);
> +	if (ret < 0) {
> +		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
> +		return ret;
> +	}
> +
> +	return ret;
> +}
> +
> +static struct snd_soc_jack_pin hp_jack_pin = {
> +	.pin	= "Headphone",
> +	.mask	= SND_JACK_HEADPHONE,
> +};
> +
> +static struct snd_soc_jack_pin mic_jack_pin = {
> +	.pin	= "Headset Mic",
> +	.mask	= SND_JACK_MICROPHONE,
> +};
> +
> +static struct snd_soc_jack_gpio hp_jack_gpio = {
> +	.name			= "hp-gpio",
> +	.report			= SND_JACK_HEADPHONE,
> +	.debounce_time		= 200,
> +	.invert			= 1,
> +};
> +
> +static struct snd_soc_jack_gpio mic_jack_gpio = {
> +	.name			= "mic-gpio",
> +	.report			= SND_JACK_MICROPHONE,
> +	.debounce_time		= 200,
> +	.invert			= 1,
> +};
> +
> +static int rk_init(struct snd_soc_pcm_runtime *runtime)
> +{
> +	int ret = 0;
> +	struct snd_soc_codec *codec = runtime->codec;
> +	struct snd_soc_dapm_context *dapm = &codec->dapm;
> +	struct snd_soc_card *card = runtime->card;
> +	struct rk_mc_private *drv = snd_soc_card_get_drvdata(card);
> +	struct snd_soc_jack *hp_jack = &drv->hp_jack;
> +	struct snd_soc_jack *mic_jack = &drv->mic_jack;
> +
> +	card->dapm.idle_bias_off = true;
> +
> +	ret = snd_soc_add_card_controls(card, rk_mc_controls,
> +					ARRAY_SIZE(rk_mc_controls));
> +	if (ret) {
> +		pr_err("unable to add card->controls\n");
> +		return ret;
> +	}
> +
> +	snd_soc_dapm_enable_pin(dapm, "Headset Mic");
> +	snd_soc_dapm_enable_pin(dapm, "Headphone");
> +	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
> +	snd_soc_dapm_enable_pin(dapm, "Int Mic");
> +
> +	/* Enable headphone jack detection */
> +	ret = snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
> +			       hp_jack);
> +	if (ret)
> +		return ret;
> +
> +	ret = snd_soc_jack_add_pins(hp_jack, 1, &hp_jack_pin);
> +	if (ret)
> +		return ret;
> +
> +	ret = snd_soc_jack_add_gpios(hp_jack, 1, &hp_jack_gpio);
> +	if (ret)
> +		return ret;
> +
> +	/* Enable mic jack detection */
> +	ret = snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
> +			       mic_jack);
> +	if (ret)
> +		return ret;
> +
> +	ret = snd_soc_jack_add_pins(mic_jack, 1, &mic_jack_pin);
> +	if (ret)
> +		return ret;
> +
> +	ret = snd_soc_jack_add_gpios(mic_jack, 1, &mic_jack_gpio);
> +	if (ret)
> +		return ret;
> +
> +	return ret;
> +}
> +
> +static struct snd_soc_ops rk_aif1_ops = {
> +	.hw_params = rk_aif1_hw_params,
> +};
> +
> +static struct snd_soc_dai_link rk_dailink = {
> +	.name = "max98090",
> +	.stream_name = "Audio",
> +	.codec_dai_name = "HiFi",
> +	.init = rk_init,
> +	.ops = &rk_aif1_ops,
> +	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
> +		SND_SOC_DAIFMT_CBM_CFM,
> +};
> +
> +static struct snd_soc_card snd_soc_card_rk = {
> +	.name = "ROCKCHIP-I2S",
> +	.dai_link = &rk_dailink,
> +	.num_links = 1,
> +	.dapm_widgets = rk_dapm_widgets,
> +	.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
> +	.dapm_routes = rk_audio_map,
> +	.num_dapm_routes = ARRAY_SIZE(rk_audio_map),
> +	.controls = rk_mc_controls,
> +	.num_controls = ARRAY_SIZE(rk_mc_controls),
> +};
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int snd_rk_prepare(struct device *dev)
> +{
> +	struct snd_soc_card *card = dev_get_drvdata(dev);
> +	struct rk_mc_private *drv = snd_soc_card_get_drvdata(card);
> +
> +	snd_soc_jack_free_gpios(&drv->hp_jack, 1, &hp_jack_gpio);
> +	snd_soc_jack_free_gpios(&drv->mic_jack, 1, &mic_jack_gpio);
> +
> +	return snd_soc_suspend(dev);
> +}
> +
> +static void snd_rk_complete(struct device *dev)
> +{
> +	struct snd_soc_card *card = dev_get_drvdata(dev);
> +	struct rk_mc_private *drv = snd_soc_card_get_drvdata(card);
> +
> +	snd_soc_jack_add_gpios(&drv->hp_jack, 1, &hp_jack_gpio);
> +	snd_soc_jack_add_gpios(&drv->mic_jack, 1, &mic_jack_gpio);
> +
> +	snd_soc_resume(dev);
> +}
> +
> +static const struct dev_pm_ops rk_max98090_pm_ops = {
> +	.prepare = snd_rk_prepare,
> +	.complete = snd_rk_complete,
> +};
> +
> +#define RK_MAX98090_PM_OPS	(&rk_max98090_pm_ops)
> +#else
> +#define RK_MAX98090_PM_OPS	NULL
> +#endif
> +
> +static int snd_rk_mc_probe(struct platform_device *pdev)
> +{
> +	int ret = 0;
> +	struct rk_mc_private *drv;
> +	struct snd_soc_card *card = &snd_soc_card_rk;
> +	struct device_node *np = pdev->dev.of_node;
> +
> +	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
> +	if (!drv)
> +		return -ENOMEM;
> +
> +	hp_jack_gpio.gpio = of_get_named_gpio(np, "rockchip,hp-det-gpios", 0);
> +	if (gpio_is_valid(hp_jack_gpio.gpio))
> +		dev_warn(&pdev->dev,
> +			 "Property 'rockchip,hp-det-gpios' missing or invalid\n");
> +
> +	mic_jack_gpio.gpio = of_get_named_gpio(np, "rockchip,mic-det-gpios", 0);
> +	if (gpio_is_valid(mic_jack_gpio.gpio))
> +		dev_warn(&pdev->dev,
> +			 "Property 'rockchip,mic-det-gpios' missing or invalid\n");
> +
> +	/* register the soc card */
> +	card->dev = &pdev->dev;
> +	platform_set_drvdata(pdev, card);
> +	snd_soc_card_set_drvdata(card, drv);
> +
> +	rk_dailink.codec_of_node = of_parse_phandle(np,
> +			"rockchip,audio-codec", 0);
> +	if (!rk_dailink.codec_of_node) {
> +		dev_err(&pdev->dev,
> +			"Property 'rockchip,audio-codec' missing or invalid\n");
> +		return -EINVAL;
> +	}
> +
> +	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_card_name(card, "rockchip,model");
> +	if (ret)
> +		return ret;
> +
> +	ret = snd_soc_register_card(card);
> +	if (ret) {
> +		pr_err("snd_soc_register_card failed %d\n", ret);
> +		return ret;
> +	}
> +
> +	platform_set_drvdata(pdev, &card);
> +
> +	return ret;
> +}
> +
> +static int snd_rk_mc_remove(struct platform_device *pdev)
> +{
> +	struct snd_soc_card *soc_card = platform_get_drvdata(pdev);
> +	struct rk_mc_private *drv = snd_soc_card_get_drvdata(soc_card);
> +
> +	snd_soc_jack_free_gpios(&drv->hp_jack, 1, &hp_jack_gpio);
> +	snd_soc_jack_free_gpios(&drv->mic_jack, 1, &mic_jack_gpio);
> +
> +	snd_soc_unregister_card(soc_card);
> +	platform_set_drvdata(pdev, NULL);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id rockchip_max98090_of_match[] = {
> +	{ .compatible = "rockchip,rockchip-audio-max98090", },
> +	{},
> +};
> +
> +static struct platform_driver snd_rk_mc_driver = {
> +	.probe = snd_rk_mc_probe,
> +	.remove = snd_rk_mc_remove,
> +	.driver = {
> +		.name = DRV_NAME,
> +		.owner = THIS_MODULE,
> +		.pm = RK_MAX98090_PM_OPS,
> +		.of_match_table = rockchip_max98090_of_match,
> +	},
> +};
> +
> +module_platform_driver(snd_rk_mc_driver);
> +MODULE_AUTHOR("jianqun <[email-masked]>");
> +MODULE_DESCRIPTION("Rockchip max98090 machine ASoC driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_ALIAS("platform:" DRV_NAME);
> +MODULE_DEVICE_TABLE(of, rockchip_max98090_of_match);

-- 
Jianqun Xu

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