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drm/radeon: don't use get_engine_clock() on APUs 

It doesn't work reliably.  Just report back the currently
selected engine clock.

Partially fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=62493

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2013-03-18 17:12:50 -04:00
parent 7ac8833f59
commit bf05d99851
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/radeon/radeon_pm.c
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@ -843,7 +843,11 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
struct radeon_device *rdev = dev->dev_private;
seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
/* radeon_get_engine_clock is not reliable on APUs so just print the current clock */
if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
seq_printf(m, "current engine clock: %u0 kHz\n", rdev->pm.current_sclk);
else
seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
if (rdev->asic->pm.get_memory_clock)
seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));