// SPDX-License-Identifier: GPL-2.0-only /* * ALSA SoC codec for HDMI encoder drivers * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/ * Author: Jyri Sarha <[email protected]> */ #include <linux/module.h> #include <linux/string.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/tlv.h> #include <sound/pcm_drm_eld.h> #include <sound/hdmi-codec.h> #include <sound/pcm_iec958.h> #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */ #include <drm/drm_eld.h> #define HDMI_CODEC_CHMAP_IDX_UNKNOWN … /* * CEA speaker placement for HDMI 1.4: * * FL FLC FC FRC FR FRW * * LFE * * RL RLC RC RRC RR * * Speaker placement has to be extended to support HDMI 2.0 */ enum hdmi_codec_cea_spk_placement { … }; /* * cea Speaker allocation structure */ struct hdmi_codec_cea_spk_alloc { … }; /* Channel maps stereo HDMI */ static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = …; /* Channel maps for multi-channel playbacks, up to 8 n_ch */ static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = …; /* * hdmi_codec_channel_alloc: speaker configuration available for CEA * * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct * The preceding ones have better chances to be selected by * hdmi_codec_get_ch_alloc_table_idx(). */ static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = …; struct hdmi_codec_priv { … }; static const struct snd_soc_dapm_widget hdmi_widgets[] = …; enum { … }; static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc) { … } static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp) { … } static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp, unsigned char channels) { … } static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int hdmi_codec_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai, unsigned int sample_width, unsigned int sample_rate, unsigned int channels, struct hdmi_codec_params *hp) { … } static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int hdmi_codec_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { … } static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) { … } /* * This driver can select all SND_SOC_DAIFMT_CBx_CFx, * but need to be selected from Sound Card, not be auto selected. * Because it might be used from other driver. * For example, * ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c */ static const u64 hdmi_codec_formats = …; #define HDMI_RATES … #define SPDIF_FORMATS … /* * This list is only for formats allowed on the I2S bus. So there is * some formats listed that are not supported by HDMI interface. For * instance allowing the 32-bit formats enables 24-precision with CPU * DAIs that do not support 24-bit formats. If the extra formats cause * problems, we should add the video side driver an option to disable * them. */ #define I2S_FORMATS … static struct snd_kcontrol_new hdmi_codec_controls[] = …; static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai) { … } static int hdmi_dai_probe(struct snd_soc_dai *dai) { … } static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, unsigned int jack_status) { … } static void plugged_cb(struct device *dev, bool plugged) { … } static int hdmi_codec_set_jack(struct snd_soc_component *component, struct snd_soc_jack *jack, void *data) { … } static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) { … } static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = …; static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = …; static const struct snd_soc_dai_driver hdmi_i2s_dai = …; static const struct snd_soc_dai_driver hdmi_spdif_dai = …; static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { … } static int hdmi_probe(struct snd_soc_component *component) { … } static void hdmi_remove(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver hdmi_driver = …; static int hdmi_codec_probe(struct platform_device *pdev) { … } static struct platform_driver hdmi_codec_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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