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iommu/tegra: gart: Integrate with Memory Controller driver

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The device-tree binding has been changed. There is no separate GART device
anymore, it is squashed into the Memory Controller. Integrate GART module
with the MC in a way it is done for the SMMU on Tegra30+.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Dmitry Osipenko
2018-12-12 23:38:56 +03:00
committed by Joerg Roedel
parent 45594c683e
commit ce2785a75d
4 changed files with 87 additions and 53 deletions
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43
drivers/memory/tegra/mc.c
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@@ -702,13 +702,56 @@ static int tegra_mc_probe(struct platform_device *pdev)
PTR_ERR(mc->smmu));
}
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && !mc->soc->smmu) {
mc->gart = tegra_gart_probe(&pdev->dev, mc);
if (IS_ERR(mc->gart)) {
dev_err(&pdev->dev, "failed to probe GART: %ld\n",
PTR_ERR(mc->gart));
mc->gart = NULL;
}
}
return 0;
}
static int tegra_mc_suspend(struct device *dev)
{
struct tegra_mc *mc = dev_get_drvdata(dev);
int err;
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && mc->gart) {
err = tegra_gart_suspend(mc->gart);
if (err)
return err;
}
return 0;
}
static int tegra_mc_resume(struct device *dev)
{
struct tegra_mc *mc = dev_get_drvdata(dev);
int err;
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && mc->gart) {
err = tegra_gart_resume(mc->gart);
if (err)
return err;
}
return 0;
}
static const struct dev_pm_ops tegra_mc_pm_ops = {
.suspend = tegra_mc_suspend,
.resume = tegra_mc_resume,
};
static struct platform_driver tegra_mc_driver = {
.driver = {
.name = "tegra-mc",
.of_match_table = tegra_mc_of_match,
.pm = &tegra_mc_pm_ops,
.suppress_bind_attrs = true,
},
.prevent_deferred_probe = true,