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Use built-in Meson DRM driver (#1347)

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It seems that the crash of the Meson DRM driver on shutdown can also be
fixed by compiling it in. The driver is also built-in in LibreELEC,
hence this is better tested by the upstream community.

Note the underlying issue seems to be a disabled clock: Since the
introduction of meson_drv_shutdown some registers are touched at a very
late stage. Those clock get disabled in meson_ee_pwrc_shutdown. It seems
that when the driver is built-in, meson_drv_shutdown gets called before
meson_ee_pwrc_shutdown and hence sidesteps the problem.

Note: This increases the kernel by a bit since DRM needs to be built-in
as well. Configure some less common used file systems as modules
(ext3/NFS).
This commit is contained in:
Stefan Agner 2021-04-29 22:52:27 +02:00 committed by GitHub
parent 3d793dc7ef
commit 5ac85a4c45
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2 changed files with 1059 additions and 478 deletions
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1490
buildroot-external/board/hardkernel/kernel-amlogic.config
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47
buildroot-external/board/hardkernel/patches/linux/0005-Revert-drm-meson_drv-add-shutdown-function.patch
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@ -1,47 +0,0 @@
From a58cdfdb13d2728a7fc826cead1b29eacbffa453 Mon Sep 17 00:00:00 2001
Message-Id: <a58cdfdb13d2728a7fc826cead1b29eacbffa453.1619651621.git.stefan@agner.ch>
In-Reply-To: <bcbcd8967de78638e5b861ceb9caa73da003280a.1619651621.git.stefan@agner.ch>
References: <bcbcd8967de78638e5b861ceb9caa73da003280a.1619651621.git.stefan@agner.ch>
From: Stefan Agner <stefan@agner.ch>
Date: Thu, 29 Apr 2021 01:04:32 +0200
Subject: [PATCH 5/5] Revert "drm: meson_drv add shutdown function"
This reverts commit d4ec1ffbdaa8939a208656e9c1440742c457ef16.
It seems that this patch actually breaks reboot on ODROID-N2+.
---
drivers/gpu/drm/meson/meson_drv.c | 11 -----------
1 file changed, 11 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index db56732bdd26..3d1de9cbb1c8 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -482,16 +482,6 @@ static int meson_probe_remote(struct platform_device *pdev,
return count;
}
-static void meson_drv_shutdown(struct platform_device *pdev)
-{
- struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
- struct drm_device *drm = priv->drm;
-
- DRM_DEBUG_DRIVER("\n");
- drm_kms_helper_poll_fini(drm);
- drm_atomic_helper_shutdown(drm);
-}
-
static int meson_drv_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
@@ -563,7 +553,6 @@ static const struct dev_pm_ops meson_drv_pm_ops = {
static struct platform_driver meson_drm_platform_driver = {
.probe = meson_drv_probe,
- .shutdown = meson_drv_shutdown,
.driver = {
.name = "meson-drm",
.of_match_table = dt_match,
--
2.31.1