forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

drm/radeon/kms: use tracked values for sclk and mclk

Browse source 
Rather than calling get_memory_clock and get_engine_clock,
used the tracked values from the pm code.  Calling the tables
adds additional latency in the modesetting and pm paths.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-08-10 12:33:20 -04:00 • committed by Dave Airlie
parent 2bfc96a127
commit 8807286e56
3 changed files with 18 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

28
drivers/gpu/drm/radeon/radeon_device.c
View file

@ -293,30 +293,20 @@ bool radeon_card_posted(struct radeon_device *rdev)
void radeon_update_bandwidth_info(struct radeon_device *rdev)
{
fixed20_12 a;
u32 sclk, mclk;
u32 sclk = rdev->pm.current_sclk;
u32 mclk = rdev->pm.current_mclk;
/* sclk/mclk in Mhz */
a.full = dfixed_const(100);
rdev->pm.sclk.full = dfixed_const(sclk);
rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
rdev->pm.mclk.full = dfixed_const(mclk);
rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
if (rdev->flags & RADEON_IS_IGP) {
sclk = radeon_get_engine_clock(rdev);
mclk = rdev->clock.default_mclk;
a.full = dfixed_const(100);
rdev->pm.sclk.full = dfixed_const(sclk);
rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
rdev->pm.mclk.full = dfixed_const(mclk);
rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
a.full = dfixed_const(16);
/* core_bandwidth = sclk(Mhz) * 16 */
rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
} else {
sclk = radeon_get_engine_clock(rdev);
mclk = radeon_get_memory_clock(rdev);
a.full = dfixed_const(100);
rdev->pm.sclk.full = dfixed_const(sclk);
rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
rdev->pm.mclk.full = dfixed_const(mclk);
rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
}
}