codec driver creat an standard alsa device, than config audio and report jack status through some callback interfaces that dw_hdmi driver support.

Signed-off-by: Yakir Yang ykk@rock-chips.com --- Changes in v2: - Update dw_hdmi audio control interfaces, and adjust jack report process

sound/soc/codecs/Kconfig | 4 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/dw-hdmi-audio.c | 314 +++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/dw-hdmi-audio.h | 17 +++ 4 files changed, 337 insertions(+) create mode 100644 sound/soc/codecs/dw-hdmi-audio.c create mode 100644 sound/soc/codecs/dw-hdmi-audio.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 8349f98..b34dd12 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -75,6 +75,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_MC13783 if MFD_MC13XXX select SND_SOC_ML26124 if I2C select SND_SOC_HDMI_CODEC + select SND_SOC_DW_HDMI_AUDIO select SND_SOC_PCM1681 if I2C select SND_SOC_PCM1792A if SPI_MASTER select SND_SOC_PCM3008 @@ -459,6 +460,9 @@ config SND_SOC_MAX98095 config SND_SOC_MAX9850 tristate

+config SND_SOC_DW_HDMI_AUDIO + tristate + config SND_SOC_PCM1681 tristate "Texas Instruments PCM1681 CODEC" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index bbdfd1e..0ebb664 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -68,6 +68,7 @@ snd-soc-max9850-objs := max9850.o snd-soc-mc13783-objs := mc13783.o snd-soc-ml26124-objs := ml26124.o snd-soc-hdmi-codec-objs := hdmi.o +snd-soc-dw-hdmi-audio-objs := dw-hdmi-audio.o snd-soc-pcm1681-objs := pcm1681.o snd-soc-pcm1792a-codec-objs := pcm1792a.o snd-soc-pcm3008-objs := pcm3008.o @@ -249,6 +250,7 @@ obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o obj-$(CONFIG_SND_SOC_MC13783) += snd-soc-mc13783.o obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o +obj-$(CONFIG_SND_SOC_DW_HDMI_AUDIO) += snd-soc-dw-hdmi-audio.o obj-$(CONFIG_SND_SOC_PCM1681) += snd-soc-pcm1681.o obj-$(CONFIG_SND_SOC_PCM1792A) += snd-soc-pcm1792a-codec.o obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o diff --git a/sound/soc/codecs/dw-hdmi-audio.c b/sound/soc/codecs/dw-hdmi-audio.c new file mode 100644 index 0000000..ed046ce --- /dev/null +++ b/sound/soc/codecs/dw-hdmi-audio.c @@ -0,0 +1,314 @@ +/* + * dw-hdmi-codec.c + * + * DesignerWare ALSA SoC DAI driver for DW HDMI audio. + * Copyright (c) 2014, CORPORATION. All rights reserved. + * Authors: Yakir Yang ykk@rock-chips.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/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/moduleparam.h> + +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/core.h> +#include <sound/jack.h> +#include <sound/initval.h> +#include <sound/pcm_params.h> + +#include <drm/bridge/dw_hdmi.h> +#include "dw-hdmi-audio.h" + +struct snd_dw_hdmi { + struct device *dev; + struct dw_hdmi_audio_data data; + + u8 jack_status; + struct snd_soc_jack *jack; + struct delayed_work jack_work; +}; + +/** + * dw_hdmi_jack_detect - Enable hdmi detection via the HDMI IRQ + * + * @codec: HDMI codec + * @jack: jack to report detection events on + * + * Enable HDMI detection via IRQ on the HDMI. + * + * If no jack is supplied detection will be disabled. + */ +int dw_hdmi_jack_detect(struct snd_soc_codec *codec_dai, + struct snd_soc_jack *jack) +{ + struct snd_dw_hdmi *hdmi = snd_soc_codec_get_drvdata(codec_dai); + + hdmi->jack = jack; + hdmi->jack_status = 0; + + snd_soc_jack_report(hdmi->jack, 0, SND_JACK_LINEOUT); + + queue_delayed_work(system_power_efficient_wq, &hdmi->jack_work, + msecs_to_jiffies(50)); + + return 0; +} +EXPORT_SYMBOL_GPL(dw_hdmi_jack_detect); + +static void dw_hdmi_jack_work(struct work_struct *work) +{ + struct snd_dw_hdmi *hdmi = container_of(work, struct snd_dw_hdmi, + jack_work.work); + u8 jack_status, status; + + status = hdmi->data.get_connect_status(hdmi->data.dw); + jack_status = status ? SND_JACK_LINEOUT : 0; + if (jack_status != hdmi->jack_status) { + snd_soc_jack_report(hdmi->jack, jack_status, + SND_JACK_LINEOUT); + hdmi->jack_status = jack_status; + + dev_dbg(hdmi->dev, "jack report [%d]\n", hdmi->jack_status); + } +} + +static irqreturn_t snd_dw_hdmi_irq(int irq, void *dev_id) +{ + struct snd_dw_hdmi *hdmi = dev_id; + + queue_delayed_work(system_power_efficient_wq, &hdmi->jack_work, + msecs_to_jiffies(50)); + + return IRQ_HANDLED; +} + +static int dw_hdmi_dai_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *codec_dai) +{ + struct snd_dw_hdmi *hdmi = snd_soc_dai_get_drvdata(codec_dai); + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct hdmi_audio_fmt hdmi_fmt; + unsigned int fmt, rate, chan, width; + + fmt = rtd->dai_link->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK; + switch (fmt) { + case SND_SOC_DAIFMT_I2S: + hdmi_fmt.dai_fmt = AUDIO_DAIFMT_IIS; + break; + case SND_SOC_DAIFMT_LEFT_J: + hdmi_fmt.dai_fmt = AUDIO_DAIFMT_LEFT_J; + break; + case SND_SOC_DAIFMT_RIGHT_J: + hdmi_fmt.dai_fmt = AUDIO_DAIFMT_RIGHT_J; + break; + default: + dev_err(codec_dai->dev, "DAI format unsupported"); + return -EINVAL; + } + dev_dbg(codec_dai->dev, "[codec_dai]: dai_fmt = %d.\n", fmt); + + width = params_width(params); + switch (width) { + case 16: + case 24: + hdmi_fmt.word_length = width; + break; + default: + dev_err(codec_dai->dev, "width[%d] not support!\n", width); + return -EINVAL; + } + dev_dbg(codec_dai->dev, "[codec_dai]: word_length = %d.\n", width); + + chan = params_channels(params); + switch (chan) { + case 2: + hdmi_fmt.chan_num = AUDIO_CHANNELNUM_2; + break; + case 4: + hdmi_fmt.chan_num = AUDIO_CHANNELNUM_4; + break; + case 6: + hdmi_fmt.chan_num = AUDIO_CHANNELNUM_6; + break; + case 8: + hdmi_fmt.chan_num = AUDIO_CHANNELNUM_8; + break; + default: + dev_err(codec_dai->dev, "channel[%d] not support!\n", chan); + return -EINVAL; + } + dev_dbg(codec_dai->dev, "[codec_dai]: chan_num = %d.\n", chan); + + rate = params_rate(params); + switch (rate) { + case 32000: + case 44100: + case 48000: + case 88200: + case 96000: + case 176400: + case 192000: + hdmi_fmt.sample_rate = rate; + break; + default: + dev_err(codec_dai->dev, "rate[%d] not support!\n", rate); + return -EINVAL; + } + dev_dbg(codec_dai->dev, "[codec_dai]: sample_rate = %d.\n", rate); + + hdmi->data.config_audio(hdmi->data.dw, &hdmi_fmt); + + return 0; +} + +static int dw_hdmi_dai_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *codec_dai) +{ + struct snd_dw_hdmi *hdmi = snd_soc_dai_get_drvdata(codec_dai); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + hdmi->data.enable_clk(hdmi->data.dw); + dev_dbg(codec_dai->dev, "[codec_dai]: trigger enable.\n"); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + hdmi->data.disable_clk(hdmi->data.dw); + dev_dbg(codec_dai->dev, "[codec_dai]: trigger disable.\n"); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct snd_soc_dapm_widget dw_hdmi_widgets[] = { + SND_SOC_DAPM_OUTPUT("TX"), +}; + +static const struct snd_soc_dapm_route dw_hdmi_routes[] = { + { "TX", NULL, "Playback" }, +}; + +static const struct snd_soc_dai_ops dw_hdmi_dai_ops = { + .hw_params = dw_hdmi_dai_hw_params, + .trigger = dw_hdmi_dai_trigger, +}; + +static struct snd_soc_dai_driver dw_hdmi_audio_dai = { + .name = "dw-hdmi-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_32000 | + SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | + SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, + }, + .ops = &dw_hdmi_dai_ops, +}; + +static const struct snd_soc_codec_driver dw_hdmi_audio = { + .dapm_widgets = dw_hdmi_widgets, + .num_dapm_widgets = ARRAY_SIZE(dw_hdmi_widgets), + .dapm_routes = dw_hdmi_routes, + .num_dapm_routes = ARRAY_SIZE(dw_hdmi_routes), +}; + +static int dw_hdmi_audio_probe(struct platform_device *pdev) +{ + struct dw_hdmi_audio_data *data = pdev->dev.platform_data; + struct snd_dw_hdmi *hdmi; + int ret; + + hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) + return -ENOMEM; + + hdmi->data = *data; + hdmi->dev = &pdev->dev; + platform_set_drvdata(pdev, hdmi); + + INIT_DELAYED_WORK(&hdmi->jack_work, dw_hdmi_jack_work); + + ret = devm_request_irq(&pdev->dev, hdmi->data.irq, snd_dw_hdmi_irq, + IRQF_SHARED, "dw-hdmi-audio", hdmi); + if (ret) { + dev_err(&pdev->dev, "request irq failed (%d)\n", ret); + goto free_hdmi_data; + } + + ret = snd_soc_register_codec(&pdev->dev, &dw_hdmi_audio, + &dw_hdmi_audio_dai, 1); + if (ret) { + dev_err(&pdev->dev, "register codec failed (%d)\n", ret); + goto free_irq; + } + + dev_info(&pdev->dev, "hdmi audio init success.\n"); + + return 0; + +free_irq: + devm_free_irq(&pdev->dev, hdmi->data.irq, hdmi); +free_hdmi_data: + devm_kfree(&pdev->dev, hdmi); + + return ret; +} + +static int dw_hdmi_audio_remove(struct platform_device *pdev) +{ + struct snd_dw_hdmi *hdmi = platform_get_drvdata(pdev); + + snd_soc_unregister_codec(&pdev->dev); + devm_free_irq(&pdev->dev, hdmi->data.irq, hdmi); + devm_kfree(&pdev->dev, hdmi); + + return 0; +} + +static const struct of_device_id dw_hdmi_audio_ids[] = { + { .compatible = "dw-hdmi-audio", }, + { } +}; + +static struct platform_driver dw_hdmi_audio_driver = { + .driver = { + .name = "dw-hdmi-audio", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(dw_hdmi_audio_ids), + }, + .probe = dw_hdmi_audio_probe, + .remove = dw_hdmi_audio_remove, +}; +module_platform_driver(dw_hdmi_audio_driver); + +MODULE_AUTHOR("Yakir Yang ykk@rock-chips.com"); +MODULE_DESCRIPTION("DW HDMI Audio ASoC Interface"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" "dw-hdmi-audio"); +MODULE_DEVICE_TABLE(of, dw_hdmi_audio_ids); diff --git a/sound/soc/codecs/dw-hdmi-audio.h b/sound/soc/codecs/dw-hdmi-audio.h new file mode 100644 index 0000000..2a7b5b4 --- /dev/null +++ b/sound/soc/codecs/dw-hdmi-audio.h @@ -0,0 +1,17 @@ +/* + * dw-hdmi-audio.h -- DW HDMI ALSA SoC Audio driver + * + * Copyright 2011-2012 DesignerWare Products + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _DW_HDMI_AUDIO_H +#define _DW_HDMI_AUDIO_H + +int dw_hdmi_jack_detect(struct snd_soc_codec *codec_dai, + struct snd_soc_jack *jack); + +#endif