From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Deucher Subject: [PATCH] drm/radeon/dpm: resume fixes for some systems Date: Fri, 30 May 2014 12:40:15 -0400 Message-ID: <1401468015-3691-1-git-send-email-alexander.deucher@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qg0-f51.google.com (mail-qg0-f51.google.com [209.85.192.51]) by gabe.freedesktop.org (Postfix) with ESMTP id EF3F56E189 for ; Fri, 30 May 2014 09:40:25 -0700 (PDT) Received: by mail-qg0-f51.google.com with SMTP id q107so6133994qgd.10 for ; Fri, 30 May 2014 09:40:25 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org, deathsimple@vodafone.de Cc: Alex Deucher , stable@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org 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 Cc: stable@vger.kernel.org --- 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: -- 1.8.3.1