mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-24 15:56:49 +00:00
011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
54 lines
1.4 KiB
Diff
54 lines
1.4 KiB
Diff
From 36e64f18d0df45797656ddbbcf6a58cfae397ca1 Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Tue, 19 Apr 2016 13:24:14 -0700
|
|
Subject: [PATCH] drm/vc4: Kick out the simplefb framebuffer before we set up
|
|
KMS.
|
|
|
|
If we don't, then simplefb stays loaded on /dev/fb0 even though
|
|
scanout isn't happening from simplefb's memory area any more, and you
|
|
end up with no console.
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
Acked-by: Dave Airlie <airlied@redhat.com>
|
|
(cherry picked from commit b3a15f6d55fb584dd4d8baac5d1b6a398720620c)
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_drv.c | 20 ++++++++++++++++++++
|
|
1 file changed, 20 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_drv.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
|
|
@@ -164,6 +164,24 @@ static void vc4_match_add_drivers(struct
|
|
}
|
|
}
|
|
|
|
+static void vc4_kick_out_firmware_fb(void)
|
|
+{
|
|
+ struct apertures_struct *ap;
|
|
+
|
|
+ ap = alloc_apertures(1);
|
|
+ if (!ap)
|
|
+ return;
|
|
+
|
|
+ /* Since VC4 is a UMA device, the simplefb node may have been
|
|
+ * located anywhere in memory.
|
|
+ */
|
|
+ ap->ranges[0].base = 0;
|
|
+ ap->ranges[0].size = ~0;
|
|
+
|
|
+ remove_conflicting_framebuffers(ap, "vc4drmfb", false);
|
|
+ kfree(ap);
|
|
+}
|
|
+
|
|
static int vc4_drm_bind(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
@@ -208,6 +226,8 @@ static int vc4_drm_bind(struct device *d
|
|
if (ret)
|
|
goto gem_destroy;
|
|
|
|
+ vc4_kick_out_firmware_fb();
|
|
+
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret < 0)
|
|
goto unbind_all;
|