diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-09-09 11:58:02 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-10 15:11:43 +0100 |
| commit | dd8849c8f59ec1cee4809a0c5e603e045abe860e (patch) | |
| tree | 215699ef6d8e3e5d694d6b3873e203b2fd9d900c /drivers/gpu/drm/i915/intel_display.c | |
| parent | 7839d956fc6aecbb66d645b4050e8e88e2e821cd (diff) | |
| download | lwn-dd8849c8f59ec1cee4809a0c5e603e045abe860e.tar.gz lwn-dd8849c8f59ec1cee4809a0c5e603e045abe860e.zip | |
drm/i915: don't enable self-refresh on Ironlake
We don't know how to enable it safely, especially as outputs turn on and
off. When disabling LP1 we also need to make sure LP2 and 3 are already
disabled.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29173
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29082
Reported-by: Chris Lord <chris@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 7c9103030036..19daead5b525 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3382,8 +3382,7 @@ static void ironlake_update_wm(struct drm_device *dev, int planea_clock, reg_value = I915_READ(WM1_LP_ILK); reg_value &= ~(WM1_LP_LATENCY_MASK | WM1_LP_SR_MASK | WM1_LP_CURSOR_MASK); - reg_value |= WM1_LP_SR_EN | - (ilk_sr_latency << WM1_LP_LATENCY_SHIFT) | + reg_value |= (ilk_sr_latency << WM1_LP_LATENCY_SHIFT) | (sr_wm << WM1_LP_SR_SHIFT) | cursor_wm; I915_WRITE(WM1_LP_ILK, reg_value); @@ -5669,6 +5668,9 @@ void intel_init_clock_gating(struct drm_device *dev) I915_WRITE(DISP_ARB_CTL, (I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS)); + I915_WRITE(WM3_LP_ILK, 0); + I915_WRITE(WM2_LP_ILK, 0); + I915_WRITE(WM1_LP_ILK, 0); } /* * Based on the document from hardware guys the following bits |