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authorDmitry Osipenko <digetx@gmail.com>2021-09-12 21:30:09 +0300
committerKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>2021-09-20 11:32:53 +0300
commit77b14c9d05bd72d6a3f11b4982591d6cb0090ffe (patch)
tree972ea1a5d770aa0bb81fe5582b70fa7fee8b7104 /drivers/memory
parent6fc5f1adf5a11422d748aa71e43e7c979208b8f2 (diff)
downloadlinux-77b14c9d05bd72d6a3f11b4982591d6cb0090ffe.tar.xz
memory: tegra: Remove interconnect state syncing hack
State syncing works properly now, previously the sync callback was never invoked. Apparently it was fixed in drivers core, so let's remove the hack. The state won't be synced until all consumer drivers of devices that reference memory controller in a device-tree are probed, i.e. keeping bandwidth at maximum until both display and devfreq drivers are probed. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20210912183009.6400-1-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Diffstat (limited to 'drivers/memory')
-rw-r--r--drivers/memory/tegra/mc.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 3c5aae7abf35..6b710c204799 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -706,15 +706,6 @@ static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
goto remove_nodes;
}
- /*
- * MC driver is registered too early, so early that generic driver
- * syncing doesn't work for the MC. But it doesn't really matter
- * since syncing works for the EMC drivers, hence we can sync the
- * MC driver by ourselves and then EMC will complete syncing of
- * the whole ICC state.
- */
- icc_sync_state(mc->dev);
-
return 0;
remove_nodes:
@@ -835,6 +826,15 @@ static int __maybe_unused tegra_mc_resume(struct device *dev)
return 0;
}
+static void tegra_mc_sync_state(struct device *dev)
+{
+ struct tegra_mc *mc = dev_get_drvdata(dev);
+
+ /* check whether ICC provider is registered */
+ if (mc->provider.dev == dev)
+ icc_sync_state(dev);
+}
+
static const struct dev_pm_ops tegra_mc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(tegra_mc_suspend, tegra_mc_resume)
};
@@ -845,6 +845,7 @@ static struct platform_driver tegra_mc_driver = {
.of_match_table = tegra_mc_of_match,
.pm = &tegra_mc_pm_ops,
.suppress_bind_attrs = true,
+ .sync_state = tegra_mc_sync_state,
},
.prevent_deferred_probe = true,
.probe = tegra_mc_probe,