diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2021-12-01 02:23:22 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-12-16 14:07:08 +0100 |
| commit | 1e15f5b911d6a1b4a5677e88527610946bd314dd (patch) | |
| tree | b37440ff04f57ffd790cb98b2667eaa99dd6dba2 /drivers/gpu/drm/tegra/vic.c | |
| parent | 2421b20d659069ed6435b27a919e627b74c27e7e (diff) | |
| download | linux-1e15f5b911d6a1b4a5677e88527610946bd314dd.tar.bz2 | |
drm/tegra: vic: Stop channel on suspend
CDMA must be stopped before hardware is suspended. Add channel stopping
to RPM suspend callback. Add system level suspend-resume callbacks.
Runtime PM initialization is moved to host1x client init phase because
RPM callback now uses host1x channel that is available only when host1x
client is registered.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/vic.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/vic.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index 7d2b719ed8d1..8ea653860e1a 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -152,9 +152,13 @@ static int vic_init(struct host1x_client *client) goto free_channel; } + pm_runtime_enable(client->dev); + pm_runtime_use_autosuspend(client->dev); + pm_runtime_set_autosuspend_delay(client->dev, 500); + err = tegra_drm_register_client(tegra, drm); if (err < 0) - goto free_syncpt; + goto disable_rpm; /* * Inherit the DMA parameters (such as maximum segment size) from the @@ -164,7 +168,10 @@ static int vic_init(struct host1x_client *client) return 0; -free_syncpt: +disable_rpm: + pm_runtime_dont_use_autosuspend(client->dev); + pm_runtime_force_suspend(client->dev); + host1x_syncpt_put(client->syncpts[0]); free_channel: host1x_channel_put(vic->channel); @@ -189,10 +196,15 @@ static int vic_exit(struct host1x_client *client) if (err < 0) return err; + pm_runtime_dont_use_autosuspend(client->dev); + pm_runtime_force_suspend(client->dev); + host1x_syncpt_put(client->syncpts[0]); host1x_channel_put(vic->channel); host1x_client_iommu_detach(client); + vic->channel = NULL; + if (client->group) { dma_unmap_single(vic->dev, vic->falcon.firmware.phys, vic->falcon.firmware.size, DMA_TO_DEVICE); @@ -316,6 +328,8 @@ static int vic_runtime_suspend(struct device *dev) struct vic *vic = dev_get_drvdata(dev); int err; + host1x_channel_stop(vic->channel); + err = reset_control_assert(vic->rst); if (err < 0) return err; @@ -483,19 +497,8 @@ static int vic_probe(struct platform_device *pdev) goto exit_falcon; } - pm_runtime_enable(&pdev->dev); - if (!pm_runtime_enabled(&pdev->dev)) { - err = vic_runtime_resume(&pdev->dev); - if (err < 0) - goto unregister_client; - } - pm_runtime_set_autosuspend_delay(&pdev->dev, 500); - pm_runtime_use_autosuspend(&pdev->dev); - return 0; -unregister_client: - host1x_client_unregister(&vic->client.base); exit_falcon: falcon_exit(&vic->falcon); @@ -514,11 +517,6 @@ static int vic_remove(struct platform_device *pdev) return err; } - if (pm_runtime_enabled(&pdev->dev)) - pm_runtime_disable(&pdev->dev); - else - vic_runtime_suspend(&pdev->dev); - falcon_exit(&vic->falcon); return 0; @@ -526,6 +524,8 @@ static int vic_remove(struct platform_device *pdev) 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(pm_runtime_force_suspend, + pm_runtime_force_resume) }; struct platform_driver tegra_vic_driver = { |