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drm/i915: Warn when cdclk for the platforms is not known 

Print a warning if we fall through the .get_display_clock_speed() function
pointer setup. We end up assuming a 133MHz cdclk which should mean that
at least we avoid any 0 deivisions and whatnot. But this could at least
help remind people that they have to provide this function for new platforms.

v2: Rebased to the latest
v3: Rebased to the latest

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-05-22 11:22:34 +03:00 committed by Daniel Vetter
parent 34edce2fea
commit 623e01e539
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@ -14598,9 +14598,11 @@ static void intel_init_display(struct drm_device *dev)
else if (IS_I85X(dev))
dev_priv->display.get_display_clock_speed =
i85x_get_display_clock_speed;
else /* 830 */
else { /* 830 */
WARN(!IS_I830(dev), "Unknown platform. Assuming 133 MHz CDCLK\n");
dev_priv->display.get_display_clock_speed =
i830_get_display_clock_speed;
}
if (IS_GEN5(dev)) {
dev_priv->display.fdi_link_train = ironlake_fdi_link_train;