1 // SPDX-License-Identifier: GPL-2.0
3  * dw-hdmi-i2s-audio.c
9 #include <linux/dma-mapping.h>
15 #include <sound/hdmi-codec.h>
17 #include "dw-hdmi.h"
18 #include "dw-hdmi-audio.h"
20 #define DRIVER_NAME "dw-hdmi-i2s-audio"
25 	struct dw_hdmi *hdmi = audio->hdmi;  in hdmi_write()
27 	audio->write(hdmi, val, offset);  in hdmi_write()
32 	struct dw_hdmi *hdmi = audio->hdmi;  in hdmi_read()
34 	return audio->read(hdmi, offset);  in hdmi_read()
42 	struct dw_hdmi *hdmi = audio->hdmi;  in dw_hdmi_i2s_hw_params()
47 	/* it cares I2S only */  in dw_hdmi_i2s_hw_params()
48 	if (fmt->bit_clk_provider | fmt->frame_clk_provider) {  in dw_hdmi_i2s_hw_params()
50 		return -EINVAL;  in dw_hdmi_i2s_hw_params()
60 	/* Enable the required i2s lanes */  in dw_hdmi_i2s_hw_params()
61 	switch (hparms->channels) {  in dw_hdmi_i2s_hw_params()
70 		/* Fall-thru */  in dw_hdmi_i2s_hw_params()
73 	switch (hparms->sample_width) {  in dw_hdmi_i2s_hw_params()
83 	switch (fmt->fmt) {  in dw_hdmi_i2s_hw_params()
101 		return -EINVAL;  in dw_hdmi_i2s_hw_params()
104 	dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);  in dw_hdmi_i2s_hw_params()
105 	dw_hdmi_set_channel_status(hdmi, hparms->iec.status);  in dw_hdmi_i2s_hw_params()
106 	dw_hdmi_set_channel_count(hdmi, hparms->channels);  in dw_hdmi_i2s_hw_params()
107 	dw_hdmi_set_channel_allocation(hdmi, hparms->cea.channel_allocation);  in dw_hdmi_i2s_hw_params()
119 	struct dw_hdmi *hdmi = audio->hdmi;  in dw_hdmi_i2s_audio_startup()
129 	struct dw_hdmi *hdmi = audio->hdmi;  in dw_hdmi_i2s_audio_shutdown()
140 	eld = audio->get_eld(audio->hdmi);  in dw_hdmi_i2s_get_eld()
167 	return -EINVAL;  in dw_hdmi_i2s_get_dai_id()
175 	struct dw_hdmi *hdmi = audio->hdmi;  in dw_hdmi_i2s_hook_plugged_cb()
191 	struct dw_hdmi_i2s_audio_data *audio = pdev->dev.platform_data;  in snd_dw_hdmi_probe()
198 	pdata.i2s		= 1;  in snd_dw_hdmi_probe()
203 	pdevinfo.parent		= pdev->dev.parent;  in snd_dw_hdmi_probe()
214 	dev_set_drvdata(&pdev->dev, platform);  in snd_dw_hdmi_probe()
221 	struct platform_device *platform = dev_get_drvdata(&pdev->dev);  in snd_dw_hdmi_remove()
236 MODULE_DESCRIPTION("Synopsis Designware HDMI I2S ALSA SoC interface");