bcm27xx: add kernel 5.10 support

Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0314-drm-vc4-add-iec958-controls-to-vc4_hdmi.patch b/target/linux/bcm27xx/patches-5.10/950-0314-drm-vc4-add-iec958-controls-to-vc4_hdmi.patch
new file mode 100644
index 0000000000..9369658500
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0314-drm-vc4-add-iec958-controls-to-vc4_hdmi.patch
@@ -0,0 +1,119 @@
+From 29e5bf9305e98a57a895d6806fafa6e67f257fd8 Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Tue, 17 Mar 2020 12:12:22 +0100
+Subject: [PATCH] drm/vc4: add iec958 controls to vc4_hdmi
+
+Although vc4 get an IEC958 formatted stream passed in from userspace
+the driver needs the info from the channel status bits to properly
+set up the hardware, eg for HBR passthrough.
+
+Add iec958 controls so the channel status bits can be passed in
+from userspace.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 60 ++++++++++++++++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  2 ++
+ 2 files changed, 62 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -44,6 +44,7 @@
+ #include <linux/pm_runtime.h>
+ #include <linux/rational.h>
+ #include <linux/reset.h>
++#include <sound/asoundef.h>
+ #include <sound/dmaengine_pcm.h>
+ #include <sound/pcm_drm_eld.h>
+ #include <sound/pcm_params.h>
+@@ -1179,6 +1180,47 @@ static int vc4_hdmi_audio_eld_ctl_get(st
+ 	return 0;
+ }
+ 
++static int vc4_spdif_info(struct snd_kcontrol *kcontrol,
++			  struct snd_ctl_elem_info *uinfo)
++{
++	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
++	uinfo->count = 1;
++	return 0;
++}
++
++static int vc4_spdif_playback_get(struct snd_kcontrol *kcontrol,
++				  struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
++	struct vc4_hdmi *vc4_hdmi = snd_component_to_hdmi(component);
++
++	memcpy(ucontrol->value.iec958.status, vc4_hdmi->audio.iec_status,
++	       sizeof(vc4_hdmi->audio.iec_status));
++
++	return 0;
++}
++
++static int vc4_spdif_playback_put(struct snd_kcontrol *kcontrol,
++				  struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
++	struct vc4_hdmi *vc4_hdmi = snd_component_to_hdmi(component);
++
++	memcpy(vc4_hdmi->audio.iec_status, ucontrol->value.iec958.status,
++	       sizeof(vc4_hdmi->audio.iec_status));
++
++	return 0;
++}
++
++static int vc4_spdif_mask_get(struct snd_kcontrol *kcontrol,
++			      struct snd_ctl_elem_value *ucontrol)
++{
++	memset(ucontrol->value.iec958.status, 0xff,
++	       sizeof_field(struct vc4_hdmi_audio, iec_status));
++
++	return 0;
++}
++
+ static const struct snd_kcontrol_new vc4_hdmi_audio_controls[] = {
+ 	{
+ 		.access = SNDRV_CTL_ELEM_ACCESS_READ |
+@@ -1188,6 +1230,19 @@ static const struct snd_kcontrol_new vc4
+ 		.info = vc4_hdmi_audio_eld_ctl_info,
+ 		.get = vc4_hdmi_audio_eld_ctl_get,
+ 	},
++	{
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
++		.info =    vc4_spdif_info,
++		.get =     vc4_spdif_playback_get,
++		.put =     vc4_spdif_playback_put,
++	},
++	{
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
++		.info =    vc4_spdif_info,
++		.get =     vc4_spdif_mask_get,
++	},
+ };
+ 
+ static const struct snd_soc_dapm_widget vc4_hdmi_audio_widgets[] = {
+@@ -1308,6 +1363,11 @@ static int vc4_hdmi_audio_init(struct vc
+ 	vc4_hdmi->audio.dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ 	vc4_hdmi->audio.dma_data.maxburst = 2;
+ 
++	vc4_hdmi->audio.iec_status[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
++	vc4_hdmi->audio.iec_status[1] =
++		IEC958_AES1_CON_ORIGINAL | IEC958_AES1_CON_PCM_CODER;
++	vc4_hdmi->audio.iec_status[3] = IEC958_AES3_CON_FS_48000;
++
+ 	ret = devm_snd_dmaengine_pcm_register(dev, &pcm_conf, 0);
+ 	if (ret) {
+ 		dev_err(dev, "Could not register PCM component: %d\n", ret);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -107,6 +107,8 @@ struct vc4_hdmi_audio {
+ 	struct snd_pcm_substream *substream;
+ 
+ 	bool streaming;
++
++	unsigned char iec_status[4];
+ };
+ 
+ /* General HDMI hardware state. */