1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3  * dw-hdmi-gp-audio.c
5  * Copyright 2020-2022 NXP
12 #include <linux/dma-mapping.h>
17 #include <sound/hdmi-codec.h>
26 #include "dw-hdmi-audio.h"
28 #define DRIVER_NAME "dw-hdmi-gp-audio"
29 #define DRV_NAME    "hdmi-gp-audio"
43  * The default mapping of ALSA channels to HDMI channels and speaker
44  * allocation bits.  Note that we can't do channel remapping here -
47  * Mappings for alsa-lib pcm/surround*.conf files:
52  * Our mapping from ALSA channel to CEA686D speaker name and HDMI channel:
79 	struct snd_dw_hdmi *dw = dev_get_drvdata(dev);  in audio_hw_params()  local
82 	dw_hdmi_set_sample_rate(dw->data.hdmi, params->sample_rate);  in audio_hw_params()
84 	ca = default_hdmi_channel_config[params->channels - 2].ca;  in audio_hw_params()
86 	dw_hdmi_set_channel_count(dw->data.hdmi, params->channels);  in audio_hw_params()
87 	dw_hdmi_set_channel_allocation(dw->data.hdmi, ca);  in audio_hw_params()
89 	dw_hdmi_set_sample_non_pcm(dw->data.hdmi,  in audio_hw_params()
90 				   params->iec.status[0] & IEC958_AES0_NONAUDIO);  in audio_hw_params()
91 	dw_hdmi_set_sample_width(dw->data.hdmi, params->sample_width);  in audio_hw_params()
103 	struct snd_dw_hdmi *dw = dev_get_drvdata(dev);  in audio_mute_stream()  local
106 		dw_hdmi_audio_enable(dw->data.hdmi);  in audio_mute_stream()
108 		dw_hdmi_audio_disable(dw->data.hdmi);  in audio_mute_stream()
119 	eld = audio->get_eld(audio->hdmi);  in audio_get_eld()
133 	struct snd_dw_hdmi *dw = dev_get_drvdata(dev);  in audio_hook_plugged_cb()  local
135 	return dw_hdmi_set_plugged_cb(dw->data.hdmi, fn, codec_dev);  in audio_hook_plugged_cb()
148 	struct dw_hdmi_audio_data *data = pdev->dev.platform_data;  in snd_dw_hdmi_probe()
149 	struct snd_dw_hdmi *dw;  in snd_dw_hdmi_probe()  local
159 	dw = devm_kzalloc(&pdev->dev, sizeof(*dw), GFP_KERNEL);  in snd_dw_hdmi_probe()
160 	if (!dw)  in snd_dw_hdmi_probe()
161 		return -ENOMEM;  in snd_dw_hdmi_probe()
163 	dw->data = *data;  in snd_dw_hdmi_probe()
165 	platform_set_drvdata(pdev, dw);  in snd_dw_hdmi_probe()
167 	dw->audio_pdev = platform_device_register_data(&pdev->dev,  in snd_dw_hdmi_probe()
172 	return PTR_ERR_OR_ZERO(dw->audio_pdev);  in snd_dw_hdmi_probe()
177 	struct snd_dw_hdmi *dw = platform_get_drvdata(pdev);  in snd_dw_hdmi_remove()  local
179 	platform_device_unregister(dw->audio_pdev);  in snd_dw_hdmi_remove()
193 MODULE_DESCRIPTION("Synopsys Designware HDMI GPA ALSA interface");