Am 30.05.2014 18:40, schrieb Alex Deucher:
Setting the power state prior to restoring the display
hardware leads to blank screens on some systems. Drop
the power state set from dpm resume. The power state
will get set as part of the mode set sequence. Also
add an explicit power state set after mode set resume
to cover PX and headless systems.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=76761
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
I've just added this to my 3.15 queue, but it looks like Linus is going
to tag 3.15 tomorrow and Dave already send out his most likely last pull
request.
Going to send out another pull request in the evening if I can get the
VM crashes resolved as well, but I doubt it will be included.
Christian.
---
drivers/gpu/drm/radeon/atombios_crtc.c | 6 ++----
drivers/gpu/drm/radeon/radeon_device.c | 5 +++++
drivers/gpu/drm/radeon/radeon_pm.c | 1 -
3 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 998435d..baa1459 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -270,8 +270,6 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
switch (mode) {
case DRM_MODE_DPMS_ON:
radeon_crtc->enabled = true;
- /* adjust pm to dpms changes BEFORE enabling crtcs */
- radeon_pm_compute_clocks(rdev);
atombios_enable_crtc(crtc, ATOM_ENABLE);
if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
@@ -289,10 +287,10 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_DISABLE);
radeon_crtc->enabled = false;
- /* adjust pm to dpms changes AFTER disabling crtcs */
- radeon_pm_compute_clocks(rdev);
break;
}
+ /* adjust pm to dpms */
+ radeon_pm_compute_clocks(rdev);
}
static void
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 9aa1afd..20bc5af 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1562,6 +1562,11 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
}
drm_kms_helper_poll_enable(dev);
+
+ /* set the power state here in case we are a PX system or headless */
+ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
+ radeon_pm_compute_clocks(rdev);
+
return 0;
}
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 6fac8ef..304c476 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1068,7 +1068,6 @@ static void radeon_pm_resume_dpm(struct radeon_device *rdev)
if (ret)
goto dpm_resume_fail;
rdev->pm.dpm_enabled = true;
- radeon_pm_compute_clocks(rdev);
return;
dpm_resume_fail:
--
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