From 0e3d50bfcbd338254795a700dcff429a96cba1a6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 5 Feb 2013 11:47:09 -0500 Subject: [PATCH] drm/radeon/dce6: fix display powergating Only enable it when we disable the display rather than at DPMS time since enabling it requires a full modeset to restore the display state. Fixes blank screens in certain cases. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/atombios_crtc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 9175615..21a892c 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -252,8 +252,6 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode) radeon_crtc->enabled = true; /* adjust pm to dpms changes BEFORE enabling crtcs */ radeon_pm_compute_clocks(rdev); - if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set) - atombios_powergate_crtc(crtc, ATOM_DISABLE); atombios_enable_crtc(crtc, ATOM_ENABLE); if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev)) atombios_enable_crtc_memreq(crtc, ATOM_ENABLE); @@ -271,8 +269,6 @@ 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; - if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set) - atombios_powergate_crtc(crtc, ATOM_ENABLE); /* adjust pm to dpms changes AFTER disabling crtcs */ radeon_pm_compute_clocks(rdev); break; @@ -1844,6 +1840,8 @@ static void atombios_crtc_disable(struct drm_crtc *crtc) int i; atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + if (ASIC_IS_DCE6(rdev)) + atombios_powergate_crtc(crtc, ATOM_ENABLE); for (i = 0; i < rdev->num_crtc; i++) { if (rdev->mode_info.crtcs[i] && -- 2.7.4