diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-07-18 17:43:40 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-10-21 21:09:57 +0300 |
| commit | 8f4b1068e7fc3df1a77ac8151767e56b208cc87f (patch) | |
| tree | dc5b8474ad6d29a19902ba01959e48e1d0f80f94 /drivers/gpu/drm/i915/display/intel_display.c | |
| parent | 13ed13a4dcbf0b664acbf9e6f98ec7851cc59862 (diff) | |
drm/i915: Check some transcoder timing minimum limits
On ILK+ the documented min hdisplay is 64, min hblank is 32, and min
vblank is 5. On earlier platforms min hblank is also 32, and min
vblank is 3. Make sure the mode satisfies those limits.
There are further limits for HDMI and pfit use cases, but we'll check
for those in a more specific location.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190718144340.1114-2-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 2912abd85148..236fdf122e47 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -16294,6 +16294,21 @@ intel_mode_valid(struct drm_device *dev, mode->vtotal > vtotal_max) return MODE_V_ILLEGAL; + if (INTEL_GEN(dev_priv) >= 5) { + if (mode->hdisplay < 64 || + mode->htotal - mode->hdisplay < 32) + return MODE_H_ILLEGAL; + + if (mode->vtotal - mode->vdisplay < 5) + return MODE_V_ILLEGAL; + } else { + if (mode->htotal - mode->hdisplay < 32) + return MODE_H_ILLEGAL; + + if (mode->vtotal - mode->vdisplay < 3) + return MODE_V_ILLEGAL; + } + return MODE_OK; } |