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From 0a37470a112260ef1c9a016a400fdf1f8792eadc Mon Sep 17 00:00:00 2001
From: James Hughes <james.hughes@raspberrypi.org>
Date: Tue, 16 Jul 2019 12:18:21 +0100
Subject: [PATCH] Add HDMI1 facility to the driver.
For generic ALSA, all you need is the bcm2835.h change, but
have also added structures for IEC958 HDMI. Not sure how to
test those.
---
.../vc04_services/bcm2835-audio/bcm2835.c | 29 ++++++++++++++++---
.../vc04_services/bcm2835-audio/bcm2835.h | 4 ++-
2 files changed, 28 insertions(+), 5 deletions(-)
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -79,7 +79,11 @@ static int bcm2835_audio_alsa_newpcm(str
if (err)
return err;
- err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI", 1, 0, 1, true);
+ err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI", 1, AUDIO_DEST_HDMI0, 1, true);
+ if (err)
+ return err;
+
+ err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI1", 2, AUDIO_DEST_HDMI1, 1, true);
if (err)
return err;
@@ -106,7 +110,7 @@ static struct bcm2835_audio_driver bcm28
.newctl = snd_bcm2835_new_ctl,
};
-static struct bcm2835_audio_driver bcm2835_audio_hdmi = {
+static struct bcm2835_audio_driver bcm2835_audio_hdmi0 = {
.driver = {
.name = "bcm2835_hdmi",
.owner = THIS_MODULE,
@@ -116,7 +120,20 @@ static struct bcm2835_audio_driver bcm28
.minchannels = 1,
.newpcm = bcm2835_audio_simple_newpcm,
.newctl = snd_bcm2835_new_hdmi_ctl,
- .route = AUDIO_DEST_HDMI
+ .route = AUDIO_DEST_HDMI0
+};
+
+static struct bcm2835_audio_driver bcm2835_audio_hdmi1 = {
+ .driver = {
+ .name = "bcm2835_hdmi",
+ .owner = THIS_MODULE,
+ },
+ .shortname = "bcm2835 HDMI 1",
+ .longname = "bcm2835 HDMI 1",
+ .minchannels = 1,
+ .newpcm = bcm2835_audio_simple_newpcm,
+ .newctl = snd_bcm2835_new_hdmi_ctl,
+ .route = AUDIO_DEST_HDMI1
};
static struct bcm2835_audio_driver bcm2835_audio_headphones = {
@@ -143,7 +160,11 @@ static struct bcm2835_audio_drivers chil
.is_enabled = &enable_compat_alsa,
},
{
- .audio_driver = &bcm2835_audio_hdmi,
+ .audio_driver = &bcm2835_audio_hdmi0,
+ .is_enabled = &enable_hdmi,
+ },
+ {
+ .audio_driver = &bcm2835_audio_hdmi1,
.is_enabled = &enable_hdmi,
},
{
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
@@ -33,7 +33,9 @@ enum {
enum snd_bcm2835_route {
AUDIO_DEST_AUTO = 0,
AUDIO_DEST_HEADPHONES = 1,
- AUDIO_DEST_HDMI = 2,
+ AUDIO_DEST_HDMI = 2, // for backwards compatibility.
+ AUDIO_DEST_HDMI0 = 2,
+ AUDIO_DEST_HDMI1 = 3,
AUDIO_DEST_MAX,
};
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