diff options
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/tegra/mc.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index 55ecfb2d8cfd..e684e234361a 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -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, |