| From: Alex Deucher <alexander.deucher@amd.com> |
| Date: Mon, 18 Mar 2013 17:12:50 -0400 |
| Subject: drm/radeon: don't use get_engine_clock() on APUs |
| |
| commit bf05d9985111f85ed6922c134567b96eb789283b upstream. |
| |
| 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> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| drivers/gpu/drm/radeon/radeon_pm.c | 6 +++++- |
| 1 file changed, 5 insertions(+), 1 deletion(-) |
| |
| --- a/drivers/gpu/drm/radeon/radeon_pm.c |
| +++ b/drivers/gpu/drm/radeon/radeon_pm.c |
| @@ -863,7 +863,11 @@ static int radeon_debugfs_pm_info(struct |
| 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->get_memory_clock) |
| seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev)); |