The driver is used for cdn dp codec embedded in rk3399
Signed-off-by: Chris Zhong zyw@rock-chips.com
---
.../bindings/sound/rockchip-cdn-dp-audio.txt | 12 ++ sound/soc/rockchip/Kconfig | 9 ++ sound/soc/rockchip/Makefile | 2 + sound/soc/rockchip/rockchip-cdn-dp-audio.c | 167 +++++++++++++++++++++ 4 files changed, 190 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rockchip-cdn-dp-audio.txt create mode 100644 sound/soc/rockchip/rockchip-cdn-dp-audio.c
diff --git a/Documentation/devicetree/bindings/sound/rockchip-cdn-dp-audio.txt b/Documentation/devicetree/bindings/sound/rockchip-cdn-dp-audio.txt new file mode 100644 index 0000000..b7b0898 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rockchip-cdn-dp-audio.txt @@ -0,0 +1,12 @@ +Rockchip cdn dp audio bindings + +Required properties: +- compatible: platform specific, must be "rockchip,cdn-dp-audio" +- i2s-controller: the device of i2s controller + +Example: + + cdn_dp_audio: cdn-dp_audio { + compatible = "rockchip,cdn-dp-audio"; + i2s-controller = <&i2s2>; + }; diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig index f1e0c70..7e7d905 100644 --- a/sound/soc/rockchip/Kconfig +++ b/sound/soc/rockchip/Kconfig @@ -15,6 +15,15 @@ config SND_SOC_ROCKCHIP_I2S Rockchip I2S device. The device supports upto maximum of 8 channels each for play and record.
+config SND_SOC_ROCKCHIP_CDN_DP_AUDIO + tristate "cdn DP audio support" + depends on ROCKCHIP_CDN_DP + select SND_SOC_ROCKCHIP_I2S + select SND_SOC_CDN_DP_AUDIO + help + Say Y or M here if you want to add support for SoC audio on Rockchip + boards using the cdn dp codec, such as RK3399. + config SND_SOC_ROCKCHIP_SPDIF tristate "Rockchip SPDIF Device Driver" depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile index c0bf560..9367f55 100644 --- a/sound/soc/rockchip/Makefile +++ b/sound/soc/rockchip/Makefile @@ -5,8 +5,10 @@ snd-soc-rockchip-spdif-objs := rockchip_spdif.o obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-rockchip-i2s.o obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o
+snd-soc-rockchip-cdn-dp-objs := rockchip-cdn-dp-audio.o snd-soc-rockchip-max98090-objs := rockchip_max98090.o snd-soc-rockchip-rt5645-objs := rockchip_rt5645.o
+obj-$(CONFIG_SND_SOC_ROCKCHIP_CDN_DP_AUDIO) += snd-soc-rockchip-cdn-dp.o obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o obj-$(CONFIG_SND_SOC_ROCKCHIP_RT5645) += snd-soc-rockchip-rt5645.o diff --git a/sound/soc/rockchip/rockchip-cdn-dp-audio.c b/sound/soc/rockchip/rockchip-cdn-dp-audio.c new file mode 100644 index 0000000..2bf6649 --- /dev/null +++ b/sound/soc/rockchip/rockchip-cdn-dp-audio.c @@ -0,0 +1,167 @@ +/* + * rockchip-cdn-dp-card.c + * + * ROCKCHIP ALSA SoC DAI driver for cdn dp audio on rockchip processors. + * + * Copyright (C) 2016 Chris Zhong zyw@rock-chips.com + * Copyright (C) 2016 ROCKCHIP, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. + * + * This program is distributed in the hope that 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. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <sound/soc.h> +#include <sound/pcm.h> +#include <sound/core.h> +#include <sound/pcm_params.h> + +#include "rockchip_i2s.h" + +#define DRV_NAME "rockchip-cdn-dp-audio" + +static int cdn_dp_audio_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + unsigned int dai_fmt = rtd->dai_link->dai_fmt; + int mclk, ret; + + 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_fmt(cpu_dai, dai_fmt); + if (ret < 0) { + dev_err(cpu_dai->dev, "failed to set cpu_dai fmt.\n"); + return ret; + } + + ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, SND_SOC_CLOCK_OUT); + if (ret < 0) { + dev_err(cpu_dai->dev, "failed to set cpu_dai sysclk.\n"); + return ret; + } + + return 0; +} + +static struct snd_soc_ops cdn_dp_dai_ops = { + .hw_params = cdn_dp_audio_hw_params, +}; + +static struct snd_soc_dai_link cdn_dp_dai = { + .name = "cdn_dp", + .stream_name = "cdn_dp", + .codec_name = "cdn-dp-audio", + .codec_dai_name = "cdn-dp-hifi", + .ops = &cdn_dp_dai_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, +}; + +static struct snd_soc_card cdn_dp_audio_card = { + .name = "cdn_dp", + .owner = THIS_MODULE, + .dai_link = &cdn_dp_dai, + .num_links = 1, +}; + +static int cdn_dp_audio_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &cdn_dp_audio_card; + struct device_node *np = pdev->dev.of_node; + int ret; + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + + cdn_dp_dai.cpu_of_node = of_parse_phandle(np, "i2s-controller", 0); + if (!cdn_dp_dai.cpu_of_node) { + dev_err(&pdev->dev, "Property 'i2s-controller' missing !\n"); + goto free_priv_data; + } + + cdn_dp_dai.platform_of_node = cdn_dp_dai.cpu_of_node; + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "register card failed (%d)\n", ret); + card->dev = NULL; + goto free_cpu_of_node; + } + + dev_info(&pdev->dev, "rockchip cdn dp audio init success.\n"); + + return 0; + +free_cpu_of_node: + cdn_dp_dai.cpu_of_node = NULL; + cdn_dp_dai.platform_of_node = NULL; +free_priv_data: + snd_soc_card_set_drvdata(card, NULL); + platform_set_drvdata(pdev, NULL); + card->dev = NULL; + + return ret; +} + +static int cdn_dp_audio_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + snd_soc_unregister_card(card); + snd_soc_card_set_drvdata(card, NULL); + platform_set_drvdata(pdev, NULL); + card->dev = NULL; + + return 0; +} + +static const struct of_device_id cdn_dp_audio_of_match[] = { + { .compatible = "rockchip,cdn-dp-audio", }, + {}, +}; + +static struct platform_driver cdn_dp_audio_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + .of_match_table = cdn_dp_audio_of_match, + }, + .probe = cdn_dp_audio_probe, + .remove = cdn_dp_audio_remove, +}; +module_platform_driver(cdn_dp_audio_driver); + +MODULE_AUTHOR("Chris Zhong zyw@rock-chips.com"); +MODULE_DESCRIPTION("CDN DP Audio ASoC Interface"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, cdn_dp_audio_of_match);