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| author |   Jakub Kicinski <kuba@kernel.org> | 2022-10-20 17:49:10 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-20 17:49:10 -0700 |
| commit | 94adb5e29e0e583283183dbaa852ee9d7d0c4c26 (patch) | |
| tree | 3038a63f3ed9632711100f1187c4c53c304b785b /drivers/gpu/drm/i915/display/intel_display.c | |
| parent | net: ipa: Proactively round up to kmalloc bucket size (diff) | |
| parent | Merge tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff) | |
| download | wireguard-linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.tar.xz wireguard-linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index dd008ba8afe3..461c62c88413 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8130,6 +8130,17 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv) drm_helper_move_panel_connectors_to_head(&dev_priv->drm); } +static int max_dotclock(struct drm_i915_private *i915) +{ + int max_dotclock = i915->max_dotclk_freq; + + /* icl+ might use bigjoiner */ + if (DISPLAY_VER(i915) >= 11) + max_dotclock *= 2; + + return max_dotclock; +} + static enum drm_mode_status intel_mode_valid(struct drm_device *dev, const struct drm_display_mode *mode) @@ -8167,6 +8178,13 @@ intel_mode_valid(struct drm_device *dev, DRM_MODE_FLAG_CLKDIV2)) return MODE_BAD; + /* + * Reject clearly excessive dotclocks early to + * avoid having to worry about huge integers later. + */ + if (mode->clock > max_dotclock(dev_priv)) + return MODE_CLOCK_HIGH; + /* Transcoder timing limits */ if (DISPLAY_VER(dev_priv) >= 11) { hdisplay_max = 16384; |