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, 111 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0637-drm-vc4-hdmi-Remove-redundant-variables.patch b/target/linux/bcm27xx/patches-5.10/950-0637-drm-vc4-hdmi-Remove-redundant-variables.patch
new file mode 100644
index 0000000000..c147ed2708
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0637-drm-vc4-hdmi-Remove-redundant-variables.patch
@@ -0,0 +1,111 @@
+From 644a25e926abb918dfff7b3122896848ca35d2a1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 27 Apr 2021 16:26:39 +0200
+Subject: [PATCH] drm/vc4: hdmi: Remove redundant variables
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 26 ++++++++++++--------------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  4 ----
+ 2 files changed, 12 insertions(+), 18 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1164,12 +1164,13 @@ static u32 vc5_hdmi_channel_map(struct v
+ }
+ 
+ /* HDMI audio codec callbacks */
+-static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi)
++static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi,
++					 unsigned int samplerate)
+ {
+ 	u32 hsm_clock = clk_get_rate(vc4_hdmi->audio_clock);
+ 	unsigned long n, m;
+ 
+-	rational_best_approximation(hsm_clock, vc4_hdmi->audio.samplerate,
++	rational_best_approximation(hsm_clock, samplerate,
+ 				    VC4_HD_MAI_SMP_N_MASK >>
+ 				    VC4_HD_MAI_SMP_N_SHIFT,
+ 				    (VC4_HD_MAI_SMP_M_MASK >>
+@@ -1181,12 +1182,11 @@ static void vc4_hdmi_audio_set_mai_clock
+ 		   VC4_SET_FIELD(m - 1, VC4_HD_MAI_SMP_M));
+ }
+ 
+-static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi)
++static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi, unsigned int samplerate)
+ {
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+ 	struct drm_crtc *crtc = encoder->crtc;
+ 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
+-	u32 samplerate = vc4_hdmi->audio.samplerate;
+ 	u32 n, cts;
+ 	u64 tmp;
+ 
+@@ -1320,27 +1320,25 @@ static int vc4_hdmi_audio_prepare(struct
+ {
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
++	unsigned int sample_rate = params->sample_rate;
++	unsigned int channels = params->channels;
+ 	u32 audio_packet_config, channel_mask;
+ 	u32 channel_map;
+ 	u32 mai_audio_format;
+ 	u32 mai_sample_rate;
+ 
+ 	dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
+-		params->sample_rate, params->sample_width,
+-		params->channels);
+-
+-	vc4_hdmi->audio.channels = params->channels;
+-	vc4_hdmi->audio.samplerate = params->sample_rate;
++		sample_rate, params->sample_width, channels);
+ 
+ 	HDMI_WRITE(HDMI_MAI_CTL,
+-		   VC4_SET_FIELD(params->channels, VC4_HD_MAI_CTL_CHNUM) |
++		   VC4_SET_FIELD(channels, VC4_HD_MAI_CTL_CHNUM) |
+ 		   VC4_HD_MAI_CTL_WHOLSMP |
+ 		   VC4_HD_MAI_CTL_CHALIGN |
+ 		   VC4_HD_MAI_CTL_ENABLE);
+ 
+-	vc4_hdmi_audio_set_mai_clock(vc4_hdmi);
++	vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
+ 
+-	mai_sample_rate = sample_rate_to_mai_fmt(vc4_hdmi->audio.samplerate);
++	mai_sample_rate = sample_rate_to_mai_fmt(sample_rate);
+ 	if (params->iec.status[0] & IEC958_AES0_NONAUDIO &&
+ 	    params->channels == 8)
+ 		mai_audio_format = VC4_HDMI_MAI_FORMAT_HBR;
+@@ -1358,7 +1356,7 @@ static int vc4_hdmi_audio_prepare(struct
+ 		VC4_HDMI_AUDIO_PACKET_ZERO_DATA_ON_INACTIVE_CHANNELS |
+ 		VC4_SET_FIELD(0x8, VC4_HDMI_AUDIO_PACKET_B_FRAME_IDENTIFIER);
+ 
+-	channel_mask = GENMASK(vc4_hdmi->audio.channels - 1, 0);
++	channel_mask = GENMASK(channels - 1, 0);
+ 	audio_packet_config |= VC4_SET_FIELD(channel_mask,
+ 					     VC4_HDMI_AUDIO_PACKET_CEA_MASK);
+ 
+@@ -1377,7 +1375,7 @@ static int vc4_hdmi_audio_prepare(struct
+ 	channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask);
+ 	HDMI_WRITE(HDMI_MAI_CHANNEL_MAP, channel_map);
+ 	HDMI_WRITE(HDMI_AUDIO_PACKET_CONFIG, audio_packet_config);
+-	vc4_hdmi_set_n_cts(vc4_hdmi);
++	vc4_hdmi_set_n_cts(vc4_hdmi, sample_rate);
+ 
+ 	memcpy(&vc4_hdmi->audio.infoframe, &params->cea, sizeof(params->cea));
+ 	vc4_hdmi_set_audio_infoframe(encoder);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -111,13 +111,9 @@ struct vc4_hdmi_audio {
+ 	struct snd_soc_dai_link_component cpu;
+ 	struct snd_soc_dai_link_component codec;
+ 	struct snd_soc_dai_link_component platform;
+-	int samplerate;
+-	int channels;
+ 	struct snd_dmaengine_dai_dma_data dma_data;
+ 	struct hdmi_audio_infoframe infoframe;
+ 	bool streaming;
+-
+-	unsigned char iec_status[4];
+ };
+ 
+ /* General HDMI hardware state. */