openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915: Fix BXT min_pixclk after state readout 

commit 4e5ca60fd3 ("drm/i915: Use ilk_max_pixel_rate() for BXT cdclk calculation")
tried to change BXT to use ilk_max_pixel_rate() to compute the
pipe pixel rate. I failed to notice that there was another place
in the state readout code that needs the same treatment. So let's
change that one too.

Should probably just change things to always compuyte the pipe pixel
rates, instead of just doing on platforms that can change cdclk
dynamically. But for now let's just move BXT fully over to the
side that uses ilk_pipe_pixel_rate().

Cc: Jani Nikula <jani.nikula@intel.com>
Fixes: 4e5ca60fd3 ("drm/i915: Use ilk_max_pixel_rate() for BXT cdclk calculation")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463172100-24715-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Ville Syrjälä 2016-05-13 23:41:20 +03:00
parent 03d92e4779
commit 9558d15dc2
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/i915/intel_display.c
View File

@ -15128,18 +15128,16 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
if (crtc_state->base.active) {
dev_priv->active_crtcs |= 1 << crtc->pipe;
if (IS_BROADWELL(dev_priv)) {
if (IS_BROXTON(dev_priv) || IS_BROADWELL(dev_priv))
pixclk = ilk_pipe_pixel_rate(crtc_state);
/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
if (crtc_state->ips_enabled)
pixclk = DIV_ROUND_UP(pixclk * 100, 95);
} else if (IS_VALLEYVIEW(dev_priv) ||
IS_CHERRYVIEW(dev_priv) ||
IS_BROXTON(dev_priv))
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
pixclk = crtc_state->base.adjusted_mode.crtc_clock;
else
WARN_ON(dev_priv->display.modeset_calc_cdclk);
/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled)
pixclk = DIV_ROUND_UP(pixclk * 100, 95);
}
dev_priv->min_pixclk[crtc->pipe] = pixclk;