[PATCH v2] drm/omap: force runtime PM suspend on system suspend

[Tomi Valkeinen]

Use SET_LATE_SYSTEM_SLEEP_PM_OPS in DSS submodules to force runtime PM
suspend and resume.

We use suspend late version so that omapdrm's system suspend callback is
called first, as that will disable all the display outputs after which
it's safe to force DSS into suspend.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
 drivers/gpu/drm/omapdrm/dss/dispc.c | 1 +
 drivers/gpu/drm/omapdrm/dss/dsi.c   | 1 +
 drivers/gpu/drm/omapdrm/dss/dss.c   | 1 +
 drivers/gpu/drm/omapdrm/dss/venc.c  | 1 +
 4 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c
index 6639ee9b05d3..48593932bddf 100644
--- a/drivers/gpu/drm/omapdrm/dss/dispc.c
+++ b/drivers/gpu/drm/omapdrm/dss/dispc.c
@@ -4915,6 +4915,7 @@ static int dispc_runtime_resume(struct device *dev)
 static const struct dev_pm_ops dispc_pm_ops = {
 	.runtime_suspend = dispc_runtime_suspend,
 	.runtime_resume = dispc_runtime_resume,
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 struct platform_driver omap_dispchw_driver = {
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 79ddfbfd1b58..eeccf40bae41 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -5467,6 +5467,7 @@ static int dsi_runtime_resume(struct device *dev)
 static const struct dev_pm_ops dsi_pm_ops = {
 	.runtime_suspend = dsi_runtime_suspend,
 	.runtime_resume = dsi_runtime_resume,
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 struct platform_driver omap_dsihw_driver = {
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index 4d5739fa4a5d..6ccbc29c4ce4 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -1614,6 +1614,7 @@ static int dss_runtime_resume(struct device *dev)
 static const struct dev_pm_ops dss_pm_ops = {
 	.runtime_suspend = dss_runtime_suspend,
 	.runtime_resume = dss_runtime_resume,
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 struct platform_driver omap_dsshw_driver = {
diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c
index 9701843ccf09..01ee6c50b663 100644
--- a/drivers/gpu/drm/omapdrm/dss/venc.c
+++ b/drivers/gpu/drm/omapdrm/dss/venc.c
@@ -902,6 +902,7 @@ static int venc_runtime_resume(struct device *dev)
 static const struct dev_pm_ops venc_pm_ops = {
 	.runtime_suspend = venc_runtime_suspend,
 	.runtime_resume = venc_runtime_resume,
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 };
 
 static const struct of_device_id venc_of_match[] = {
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