diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-10-22 12:32:15 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-11-11 23:51:46 +0100 |
| commit | b9e0bda3cd325b55f336efb751736163f62abded (patch) | |
| tree | 495687ba8ac9ec30ee4bfd04e478f87525fafe94 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | ccdf56cdb2a4d6103eb6627494d6cd34edb1c2ea (diff) | |
| download | blackbird-op-linux-b9e0bda3cd325b55f336efb751736163f62abded.tar.gz blackbird-op-linux-b9e0bda3cd325b55f336efb751736163f62abded.zip | |
drm/i915: Always calculate 8xx WM values based on a 32-bpp framebuffer
The specs for gen2 say that the watermark values "should always be set
assuming a 32bpp display mode, even though the display mode may be 15 or
16 bpp."
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8f1561616bfb..0cbc0e6402b4 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1468,9 +1468,12 @@ static void i9xx_update_wm(struct drm_device *dev) fifo_size = dev_priv->display.get_fifo_size(dev, 0); crtc = intel_get_crtc_for_plane(dev, 0); if (crtc->enabled && crtc->fb) { + int cpp = crtc->fb->bits_per_pixel / 8; + if (IS_GEN2(dev)) + cpp = 4; + planea_wm = intel_calculate_wm(crtc->mode.clock, - wm_info, fifo_size, - crtc->fb->bits_per_pixel / 8, + wm_info, fifo_size, cpp, latency_ns); enabled = crtc; } else @@ -1479,9 +1482,12 @@ static void i9xx_update_wm(struct drm_device *dev) fifo_size = dev_priv->display.get_fifo_size(dev, 1); crtc = intel_get_crtc_for_plane(dev, 1); if (crtc->enabled && crtc->fb) { + int cpp = crtc->fb->bits_per_pixel / 8; + if (IS_GEN2(dev)) + cpp = 4; + planeb_wm = intel_calculate_wm(crtc->mode.clock, - wm_info, fifo_size, - crtc->fb->bits_per_pixel / 8, + wm_info, fifo_size, cpp, latency_ns); if (enabled == NULL) enabled = crtc; @@ -1571,8 +1577,7 @@ static void i830_update_wm(struct drm_device *dev) planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info, dev_priv->display.get_fifo_size(dev, 0), - crtc->fb->bits_per_pixel / 8, - latency_ns); + 4, latency_ns); fwater_lo = I915_READ(FW_BLC) & ~0xfff; fwater_lo |= (3<<8) | planea_wm; |
