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, 60 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0713-drm-gud-Free-buffers-on-device-removal.patch b/target/linux/bcm27xx/patches-5.10/950-0713-drm-gud-Free-buffers-on-device-removal.patch
new file mode 100644
index 0000000000..507b7be713
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0713-drm-gud-Free-buffers-on-device-removal.patch
@@ -0,0 +1,60 @@
+From 888d867aa6f8fe384b37c0915eed07bb3a970fc4 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Thu, 1 Jul 2021 19:07:47 +0200
+Subject: [PATCH] drm/gud: Free buffers on device removal
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ drm-misc commit f8ac863b6a93863334cefb94285daaa6617381b5 ]
+
+Free transfer and compression buffers on device removal instead of at
+DRM device removal time. This ensures that the usual 2x8MB buffers are
+released when the device is unplugged and not kept around should
+userspace keep the DRM device fd open.
+
+At least Ubuntu 20.04 doesn't release the DRM device on unplug.
+
+The damage_lock mutex is not destroyed because it is used outside the
+drm_dev_enter/exit block in gud_pipe_update(). AFAICT it's possible for
+an open fbdev descriptor to trigger a commit after the USB device is gone.
+
+v2: Don't destroy damage_lock
+
+Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Link: https://patchwork.freedesktop.org/patch/msgid/20210701170748.58009-1-noralf@tronnes.org
+---
+ drivers/gpu/drm/gud/gud_drv.c | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/gud/gud_drv.c
++++ b/drivers/gpu/drm/gud/gud_drv.c
+@@ -407,14 +407,15 @@ static struct drm_driver gud_drm_driver
+ 	.minor			= 0,
+ };
+ 
+-static void gud_free_buffers_and_mutex(struct drm_device *drm, void *unused)
++static void gud_free_buffers_and_mutex(void *data)
+ {
+-	struct gud_device *gdrm = to_gud_device(drm);
++	struct gud_device *gdrm = data;
+ 
+ 	vfree(gdrm->compress_buf);
++	gdrm->compress_buf = NULL;
+ 	kfree(gdrm->bulk_buf);
++	gdrm->bulk_buf = NULL;
+ 	mutex_destroy(&gdrm->ctrl_lock);
+-	mutex_destroy(&gdrm->damage_lock);
+ }
+ 
+ static int gud_probe(struct usb_interface *intf, const struct usb_device_id *id)
+@@ -468,7 +469,7 @@ static int gud_probe(struct usb_interfac
+ 	INIT_WORK(&gdrm->work, gud_flush_work);
+ 	gud_clear_damage(gdrm);
+ 
+-	ret = drmm_add_action_or_reset(drm, gud_free_buffers_and_mutex, NULL);
++	ret = devm_add_action(dev, gud_free_buffers_and_mutex, gdrm);
+ 	if (ret)
+ 		return ret;
+