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, 54 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0655-drm-vc4-hdmi-Enable-the-scrambler-on-reconnection.patch b/target/linux/bcm27xx/patches-5.10/950-0655-drm-vc4-hdmi-Enable-the-scrambler-on-reconnection.patch
new file mode 100644
index 0000000000..ebaf3e240b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0655-drm-vc4-hdmi-Enable-the-scrambler-on-reconnection.patch
@@ -0,0 +1,54 @@
+From 6dda05f181e44d54b97fff75162f63d0fb84b944 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 25 Jun 2021 16:22:39 +0200
+Subject: [PATCH] drm/vc4: hdmi: Enable the scrambler on reconnection
+
+If we have a state already and disconnect/reconnect the display, the
+SCDC messages won't be sent again since we didn't go through a disable /
+enable cycle.
+
+In order to fix this, let's call the vc4_hdmi_enable_scrambling function
+in the detect callback if there is a mode and it needs the scrambler to
+be enabled.
+
+Fixes: 74465b84fa27 ("drm/vc4: hdmi: Enable the scrambler")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -167,6 +167,8 @@ static void vc4_hdmi_cec_update_clk_div(
+ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {}
+ #endif
+ 
++static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder);
++
+ static enum drm_connector_status
+ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
+ {
+@@ -196,6 +198,8 @@ vc4_hdmi_connector_detect(struct drm_con
+ 			}
+ 		}
+ 
++		vc4_hdmi_enable_scrambling(&vc4_hdmi->encoder.base.base);
++
+ 		pm_runtime_put(&vc4_hdmi->pdev->dev);
+ 		return connector_status_connected;
+ 	}
+@@ -542,9 +546,13 @@ static bool vc4_hdmi_supports_scrambling
+ 
+ static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
+ {
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
++	struct drm_display_mode *mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 
++	if (!encoder->crtc || !encoder->crtc->state)
++		return;
++
++	mode = &encoder->crtc->state->adjusted_mode;
+ 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+