| From | Dmitry Osipenko <> | Subject | [PATCH v2 39/48] drm/tegra: vic: Stop channel before suspending | Date | Thu, 17 Dec 2020 21:06:29 +0300 |
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Host1x channel should be idling before hardware is turned off, hence stop the channel in the suspend callback.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/gpu/drm/tegra/vic.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index ade56b860cf9..92d3d48c4277 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -510,8 +510,23 @@ static int vic_remove(struct platform_device *pdev) return 0; } +static __maybe_unused int vic_suspend(struct device *dev) +{ + struct vic *vic = dev_get_drvdata(dev); + int err; + + host1x_channel_stop(vic->channel); + + err = pm_runtime_force_suspend(dev); + if (err < 0) + return err; + + return 0; +} + static const struct dev_pm_ops vic_pm_ops = { SET_RUNTIME_PM_OPS(vic_runtime_suspend, vic_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(vic_suspend, pm_runtime_force_resume) }; struct platform_driver tegra_vic_driver = { -- 2.29.2
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