diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2011-06-08 13:01:11 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-06-09 14:33:19 +1000 |
| commit | b20f9bef8d9ff54be266062eae365ebf4b12ca64 (patch) | |
| tree | a57a2d106d7b4a80f918224bd15e276b6ddcb02b /drivers/gpu/drm/radeon/radeon_connectors.c | |
| parent | 618c75e491a5a50cd3819eaf5f853fd87df3ae42 (diff) | |
drm/radeon/kms: check modes against max pixel clock
Filter out modes that are higher than the max pixel
clock.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_connectors.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index ee1dccb3fec9..9c2929c7e79f 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -626,8 +626,14 @@ static int radeon_vga_get_modes(struct drm_connector *connector) static int radeon_vga_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { + struct drm_device *dev = connector->dev; + struct radeon_device *rdev = dev->dev_private; + /* XXX check mode bandwidth */ - /* XXX verify against max DAC output frequency */ + + if ((mode->clock / 10) > rdev->clock.max_pixel_clock) + return MODE_CLOCK_HIGH; + return MODE_OK; } @@ -1015,6 +1021,11 @@ static int radeon_dvi_mode_valid(struct drm_connector *connector, } else return MODE_CLOCK_HIGH; } + + /* check against the max pixel clock */ + if ((mode->clock / 10) > rdev->clock.max_pixel_clock) + return MODE_CLOCK_HIGH; + return MODE_OK; } |