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authorAlex Deucher <alexdeucher@gmail.com>2014-05-30 12:40:15 -0400
committerShow Liu <show.liu@linaro.org>2014-06-18 12:05:25 +0800
commitf4110b37601f4f5f6ec61b7405f510a45eacc45e (patch)
tree96af56f595126dd3586a9379ac49cf55ab7277ae
parent1aae040d917033f3d0413ea48991011b3928be7a (diff)
drm/radeon/dpm: resume fixes for some systems
commit 3640da2faa952a2e9439a254c1ce76033ca0a6dc upstream. 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@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c6
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c4
-rw-r--r--drivers/gpu/drm/radeon/radeon_pm.c1
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index daa4dd375ab..41a9a9cb271 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 7f370b30959..0bf6f4a2bb9 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1536,6 +1536,10 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
radeon_restore_bios_scratch_regs(rdev);
+ /* 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);
+
if (fbcon) {
radeon_fbdev_set_suspend(rdev, 0);
console_unlock();
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 3d3eed40fb6..f77d9d0d54b 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1082,7 +1082,6 @@ 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: