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drm: bridge: adv7511: Support I2S IEC958 encoded PCM format 

Support IEC958 encoded PCM format for ADV7511 so that ADV7511 HDMI
audio driver can accept the IEC958 data from the I2S input.

Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210422064015.15285-1-jee.heng.sia@intel.com
This commit is contained in:
Sia Jee Heng 2021-04-22 14:40:15 +08:00 committed by Robert Foss
parent 178bdba84c
commit ae053fa234
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GPG Key ID: 3EFD900F76D1D784
2 changed files with 7 additions and 0 deletions
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1
drivers/gpu/drm/bridge/adv7511/adv7511.h
View File

@ -191,6 +191,7 @@
#define ADV7511_I2S_FORMAT_I2S 0
#define ADV7511_I2S_FORMAT_RIGHT_J 1
#define ADV7511_I2S_FORMAT_LEFT_J 2
#define ADV7511_I2S_IEC958_DIRECT 3
#define ADV7511_PACKET(p, x) ((p) * 0x20 + (x))
#define ADV7511_PACKET_SDP(x) ADV7511_PACKET(0, x)

6
drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
View File

@ -101,6 +101,10 @@ static int adv7511_hdmi_hw_params(struct device *dev, void *data,
case 20:
len = ADV7511_I2S_SAMPLE_LEN_20;
break;
case 32:
if (fmt->bit_fmt != SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE)
return -EINVAL;
fallthrough;
case 24:
len = ADV7511_I2S_SAMPLE_LEN_24;
break;
@ -112,6 +116,8 @@ static int adv7511_hdmi_hw_params(struct device *dev, void *data,
case HDMI_I2S:
audio_source = ADV7511_AUDIO_SOURCE_I2S;
i2s_format = ADV7511_I2S_FORMAT_I2S;
if (fmt->bit_fmt == SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE)
i2s_format = ADV7511_I2S_IEC958_DIRECT;
break;
case HDMI_RIGHT_J:
audio_source = ADV7511_AUDIO_SOURCE_I2S;