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    Subject[PATCH 2/2] ASoC: rockchip-max98090: add driver for rockchip board using a max98090
    Date
    The driver is used for rockchip board using a max98090.
    Test on RK3288 with max98090.

    Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
    ---
    sound/soc/rockchip/Kconfig | 9 +
    sound/soc/rockchip/Makefile | 5 +-
    sound/soc/rockchip/rockchip_max98090.c | 326 +++++++++++++++++++++++++++++++++
    3 files changed, 339 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..eb99ae7
    --- /dev/null
    +++ b/sound/soc/rockchip/rockchip_max98090.c
    @@ -0,0 +1,326 @@
    +/*
    + * 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"
    +#define RK_PLAT_CLK_12M 12000000
    +
    +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;
    +
    +/* Set max98090 as master, i2s clock output 12MHz for max98090 */
    + ret = snd_soc_dai_set_sysclk(cpu_dai, 0,
    + RK_PLAT_CLK_12M,
    + SND_SOC_CLOCK_OUT);
    + if (ret < 0) {
    + dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
    + return ret;
    + }
    +
    +/* Max98090 receive 12MHz as source clock for internel pll */
    + ret = snd_soc_dai_set_sysclk(codec_dai, 0,
    + RK_PLAT_CLK_12M,
    + 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");
    +
    + snd_soc_dapm_sync(dapm);
    +
    + /* 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,
    + /* set max98090 as master */
    + .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 (hp_jack_gpio.gpio == -EPROBE_DEFER)
    + return -EPROBE_DEFER;
    +
    + mic_jack_gpio.gpio = of_get_named_gpio(np, "rockchip,mic-det-gpios", 0);
    + if (mic_jack_gpio.gpio == -EPROBE_DEFER)
    + return -EPROBE_DEFER;
    +
    + /* 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_register_card(card);
    + if (ret) {
    + pr_err("snd_soc_register_card failed %d\n", ret);
    + return ret;
    + }
    + platform_set_drvdata(pdev, &card);
    +
    + ret = snd_soc_of_parse_card_name(card, "rockchip,model");
    + if (ret)
    + return ret;
    +
    + 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_card_set_drvdata(soc_card, NULL);
    + 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 <jay.xu@rock-chips.com>");
    +MODULE_DESCRIPTION("Rockchip max98090 machine ASoC driver");
    +MODULE_LICENSE("GPL v2");
    +MODULE_ALIAS("platform:" DRV_NAME);
    +MODULE_DEVICE_TABLE(of, rockchip_max98090_of_match);
    --
    1.9.1



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