diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2009-10-27 12:11:09 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-10-28 13:34:19 +1000 |
| commit | d56ef9c8fd34ed29ffae27598a864b4a9a82521b (patch) | |
| tree | ddcc3b07586ebd924ea4e36399a9580526ef0f65 /drivers/gpu | |
| parent | 8f552a66a40bcc6e903e91310f42fe140e0342c4 (diff) | |
drm/radeon/kms/atom: Fix DVO support
DVO in 12 bit mode (which seems to be the most common
config) requires 2x ppll.
Fixes fdo bug 21857.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index e5a3c301b7a..8516e1b2329 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -483,8 +483,14 @@ void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&adjust_pll_args); adjusted_clock = le16_to_cpu(adjust_pll_args.usPixelClock) * 10; - } else - adjusted_clock = mode->clock; + } else { + /* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */ + if (ASIC_IS_AVIVO(rdev) && + (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)) + adjusted_clock = mode->clock * 2; + else + adjusted_clock = mode->clock; + } if (radeon_crtc->crtc_id == 0) pll = &rdev->clock.p1pll; |