Commit 9d5cbf5f authored by Krishna Manikandan's avatar Krishna Manikandan Committed by Rob Clark

drm/msm: add shutdown support for display platform_driver

Define shutdown callback for display drm driver,
so as to disable all the CRTCS when shutdown
notification is received by the driver.

This change will turn off the timing engine so
that no display transactions are requested
while mmu translations are getting disabled
during reboot sequence.
Signed-off-by: default avatarKrishna Manikandan <mkrishn@codeaurora.org>

Changes in v2:
	- Remove NULL check from msm_pdev_shutdown (Stephen Boyd)
	- Change commit text to reflect when this issue
	  was uncovered (Sai Prakash Ranjan)
Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 20925fe8
...@@ -1320,6 +1320,13 @@ static int msm_pdev_remove(struct platform_device *pdev) ...@@ -1320,6 +1320,13 @@ static int msm_pdev_remove(struct platform_device *pdev)
return 0; return 0;
} }
static void msm_pdev_shutdown(struct platform_device *pdev)
{
struct drm_device *drm = platform_get_drvdata(pdev);
drm_atomic_helper_shutdown(drm);
}
static const struct of_device_id dt_match[] = { static const struct of_device_id dt_match[] = {
{ .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 }, { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 },
{ .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 }, { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
...@@ -1332,6 +1339,7 @@ MODULE_DEVICE_TABLE(of, dt_match); ...@@ -1332,6 +1339,7 @@ MODULE_DEVICE_TABLE(of, dt_match);
static struct platform_driver msm_platform_driver = { static struct platform_driver msm_platform_driver = {
.probe = msm_pdev_probe, .probe = msm_pdev_probe,
.remove = msm_pdev_remove, .remove = msm_pdev_remove,
.shutdown = msm_pdev_shutdown,
.driver = { .driver = {
.name = "msm", .name = "msm",
.of_match_table = dt_match, .of_match_table = dt_match,
......
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