UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Chris Wilson 2012-10-22 12:32:15 +01:00 committed by Daniel Vetter
parent ccdf56cdb2
commit b9e0bda3cd
1 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpu/drm/i915/intel_pm.c
View File

@ -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;